Bring uMatrix up to date

Notably:
- Import logger improvements from uBO
- Import CNAME uncloaking from uBO
- Import more improvements from uBO
- Make use of modern JS features

This should un-stall further development of uMatrix.

.jshintrc

@@ -2,11 +2,13 @@
 	"browser": true,
 	"devel": true,
 	"eqeqeq": true,
-	"esnext": true,
+	"esversion": 8,
 	"globals": {
 		"browser": false,    // global variable in Firefox, Edge
 		"self": false,
 		"chrome": false,
+		"log": false,
+		"webext": false,
 		"vAPI": false,
 		"µMatrix": false
 	},

dist/version

@@ -1 +1 @@
-1.4.0
+1.4.1.0

platform/chromium/manifest.json

@@ -22,7 +22,7 @@
     "content_scripts": [
     {
         "matches": ["http://*/*", "https://*/*"],
-        "js": ["/js/vapi-client.js", "/js/contentscript-start.js"],
+        "js": ["/js/vapi.js", "/js/vapi-client.js", "/js/contentscript-start.js"],
         "run_at": "document_start",
         "all_frames": true
         },

platform/chromium/vapi-client-extra.js

@@ -0,0 +1,308 @@
+/*******************************************************************************
+
+    uBlock Origin - a browser extension to block requests.
+    Copyright (C) 2019-present Raymond Hill
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see {http://www.gnu.org/licenses/}.
+
+    Home: https://github.com/gorhill/uBlock
+*/
+
+// For non-background page
+
+'use strict';
+
+/******************************************************************************/
+
+// Direct messaging connection ability
+
+(( ) => {
+// >>>>>>>> start of private namespace
+
+if (
+    typeof vAPI !== 'object' ||
+    vAPI.messaging instanceof Object === false ||
+    vAPI.MessagingConnection instanceof Function
+) {
+    return;
+}
+
+const listeners = new Set();
+const connections = new Map();
+
+vAPI.MessagingConnection = class {
+    constructor(handler, details) {
+        this.messaging = vAPI.messaging;
+        this.handler = handler;
+        this.id = details.id;
+        this.to = details.to;
+        this.toToken = details.toToken;
+        this.from = details.from;
+        this.fromToken = details.fromToken;
+        this.checkTimer = undefined;
+        // On Firefox it appears ports are not automatically disconnected
+        // when navigating to another page.
+        const ctor = vAPI.MessagingConnection;
+        if ( ctor.pagehide !== undefined ) { return; }
+        ctor.pagehide = ( ) => {
+            for ( const connection of connections.values() ) {
+                connection.disconnect();
+                connection.handler(
+                    connection.toDetails('connectionBroken')
+                );
+            }
+        };
+        window.addEventListener('pagehide', ctor.pagehide);
+    }
+    toDetails(what, payload) {
+        return {
+            what: what,
+            id: this.id,
+            from: this.from,
+            fromToken: this.fromToken,
+            to: this.to,
+            toToken: this.toToken,
+            payload: payload
+        };
+    }
+    disconnect() {
+        if ( this.checkTimer !== undefined ) {
+            clearTimeout(this.checkTimer);
+            this.checkTimer = undefined;
+        }
+        connections.delete(this.id);
+        const port = this.messaging.getPort();
+        if ( port === null ) { return; }
+        port.postMessage({
+            channel: 'vapi',
+            msg:  this.toDetails('connectionBroken'),
+        });
+    }
+    checkAsync() {
+        if ( this.checkTimer !== undefined ) {
+            clearTimeout(this.checkTimer);
+        }
+        this.checkTimer = vAPI.setTimeout(
+            ( ) => { this.check(); },
+            499
+        );
+    }
+    check() {
+        this.checkTimer = undefined;
+        if ( connections.has(this.id) === false ) { return; }
+        const port = this.messaging.getPort();
+        if ( port === null ) { return; }
+        port.postMessage({
+            channel: 'vapi',
+            msg: this.toDetails('connectionCheck'),
+        });
+        this.checkAsync();
+    }
+    receive(details) {
+        switch ( details.what ) {
+        case 'connectionAccepted':
+            this.toToken = details.toToken;
+            this.handler(details);
+            this.checkAsync();
+            break;
+        case 'connectionBroken':
+            connections.delete(this.id);
+            this.handler(details);
+            break;
+        case 'connectionMessage':
+            this.handler(details);
+            this.checkAsync();
+            break;
+        case 'connectionCheck':
+            const port = this.messaging.getPort();
+            if ( port === null ) { return; }
+            if ( connections.has(this.id) ) {
+                this.checkAsync();
+            } else {
+                details.what = 'connectionBroken';
+                port.postMessage({ channel: 'vapi', msg: details });
+            }
+            break;
+        case 'connectionRefused':
+            connections.delete(this.id);
+            this.handler(details);
+            break;
+        }
+    }
+    send(payload) {
+        const port = this.messaging.getPort();
+        if ( port === null ) { return; }
+        port.postMessage({
+            channel: 'vapi',
+            msg: this.toDetails('connectionMessage', payload),
+        });
+    }
+
+    static addListener(listener) {
+        listeners.add(listener);
+    }
+    static async connectTo(from, to, handler) {
+        const port = vAPI.messaging.getPort();
+        if ( port === null ) { return; }
+        const connection = new vAPI.MessagingConnection(handler, {
+            id: `${from}-${to}-${vAPI.sessionId}`,
+            to: to,
+            from: from,
+            fromToken: port.name
+        });
+        connections.set(connection.id, connection);
+        port.postMessage({
+            channel: 'vapi',
+            msg: {
+                what: 'connectionRequested',
+                id: connection.id,
+                from: from,
+                fromToken: port.name,
+                to: to,
+            }
+        });
+        return connection.id;
+    }
+    static disconnectFrom(connectionId) {
+        const connection = connections.get(connectionId);
+        if ( connection === undefined ) { return; }
+        connection.disconnect();
+    }
+    static sendTo(connectionId, payload) {
+        const connection = connections.get(connectionId);
+        if ( connection === undefined ) { return; }
+        connection.send(payload);
+    }
+    static canDestroyPort() {
+        return listeners.length === 0 && connections.size === 0;
+    }
+    static mustDestroyPort() {
+        if ( connections.size === 0 ) { return; }
+        for ( const connection of connections.values() ) {
+            connection.receive({ what: 'connectionBroken' });
+        }
+        connections.clear();
+    }
+    static canProcessMessage(details) {
+        if ( details.channel !== 'vapi' ) { return; }
+        switch ( details.msg.what ) {
+        case 'connectionAccepted':
+        case 'connectionBroken':
+        case 'connectionCheck':
+        case 'connectionMessage':
+        case 'connectionRefused': {
+            const connection = connections.get(details.msg.id);
+            if ( connection === undefined ) { break; }
+            connection.receive(details.msg);
+            return true;
+        }
+        case 'connectionRequested':
+            if ( listeners.length === 0 ) { return; }
+            const port = vAPI.messaging.getPort();
+            if ( port === null ) { break; }
+            let listener, result;
+            for ( listener of listeners ) {
+                result = listener(details.msg);
+                if ( result !== undefined ) { break; }
+            }
+            if ( result === undefined ) { break; }
+            if ( result === true ) {
+                details.msg.what = 'connectionAccepted';
+                details.msg.toToken = port.name;
+                const connection = new vAPI.MessagingConnection(
+                    listener,
+                    details.msg
+                );
+                connections.set(connection.id, connection);
+            } else {
+                details.msg.what = 'connectionRefused';
+            }
+            port.postMessage(details);
+            return true;
+        default:
+            break;
+        }
+    }
+};
+
+vAPI.messaging.extensions.push(vAPI.MessagingConnection);
+
+// <<<<<<<< end of private namespace
+})();
+
+/******************************************************************************/
+
+// Broadcast listening ability
+
+(( ) => {
+// >>>>>>>> start of private namespace
+
+if (
+    typeof vAPI !== 'object' ||
+    vAPI.messaging instanceof Object === false ||
+    vAPI.broadcastListener instanceof Object
+) {
+    return;
+}
+
+const listeners = new Set();
+
+vAPI.broadcastListener =  {
+    add: function(listener) {
+        listeners.add(listener);
+        vAPI.messaging.getPort();
+    },
+    remove: function(listener) {
+        listeners.delete(listener);
+    },
+    canDestroyPort() {
+        return listeners.size === 0;
+    },
+    mustDestroyPort() {
+        listeners.clear();
+    },
+    canProcessMessage(details) {
+        if ( details.broadcast === false ) { return; }
+        for ( const listener of listeners ) {
+             listener(details.msg);
+        }
+    },
+};
+
+vAPI.messaging.extensions.push(vAPI.broadcastListener);
+
+// <<<<<<<< end of private namespace
+})();
+
+/******************************************************************************/
+
+
+
+
+
+
+
+
+/*******************************************************************************
+
+    DO NOT:
+    - Remove the following code
+    - Add code beyond the following code
+    Reason:
+    - https://github.com/gorhill/uBlock/pull/3721
+    - uBO never uses the return value from injected content scripts
+
+**/
+
+void 0;

platform/chromium/vapi-client.js

@@ -1,7 +1,8 @@
 /*******************************************************************************
 
-    uMatrix - a browser extension to block requests.
-    Copyright (C) 2014-2018 The uMatrix/uBlock Origin authors
+    uBlock Origin - a browser extension to block requests.
+    Copyright (C) 2014-2015 The uBlock Origin authors
+    Copyright (C) 2014-present Raymond Hill
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -16,60 +17,61 @@
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see {http://www.gnu.org/licenses/}.
 
-    Home: https://github.com/gorhill/uMatrix
+    Home: https://github.com/gorhill/uBlock
 */
 
-// For non background pages
+// For non-background page
 
 'use strict';
 
 /******************************************************************************/
 
-(function(self) {
-
-/******************************************************************************/
-
-// https://bugs.chromium.org/p/project-zero/issues/detail?id=1225&desc=6#c10
-if ( self.vAPI === undefined || self.vAPI.uMatrix !== true ) {
-    self.vAPI = { uMatrix: true };
-}
-
-var vAPI = self.vAPI;
-var chrome = self.chrome;
-
 // https://github.com/chrisaljoudi/uBlock/issues/456
-// Already injected?
-if ( vAPI.vapiClientInjected ) {
-    //console.debug('vapi-client.js already injected: skipping.');
-    return;
-}
-vAPI.vapiClientInjected = true;
+//   Skip if already injected.
 
-vAPI.sessionId = String.fromCharCode(Date.now() % 26 + 97) +
-                 Math.random().toString(36).slice(2);
+// >>>>>>>> start of HUGE-IF-BLOCK
+if (
+    typeof vAPI === 'object' &&
+    vAPI.randomToken instanceof Function === false
+) {
 
+/******************************************************************************/
 /******************************************************************************/
 
-vAPI.shutdown = (function() {
-    var jobs = [];
-
-    var add = function(job) {
-        jobs.push(job);
+vAPI.randomToken = function() {
+    const now = Date.now();
+    return String.fromCharCode(now % 26 + 97) +
+           Math.floor((1 + Math.random()) * now).toString(36);
 };
 
-    var exec = function() {
-        //console.debug('Shutting down...');
-        var job;
-        while ( (job = jobs.pop()) ) {
-            job();
-        }
-    };
+vAPI.sessionId = vAPI.randomToken();
+vAPI.setTimeout = vAPI.setTimeout || self.setTimeout.bind(self);
+
+/******************************************************************************/
 
-    return {
-        add: add,
-        exec: exec
+vAPI.shutdown = {
+    jobs: [],
+    add: function(job) {
+        this.jobs.push(job);
+    },
+    exec: function() {
+        // Shutdown asynchronously, to ensure shutdown jobs are called from
+        // the top context.
+        self.requestIdleCallback(( ) => {
+            const jobs = this.jobs.slice();
+            this.jobs.length = 0;
+            while ( jobs.length !== 0 ) {
+                (jobs.pop())();
+            }
+        });
+    },
+    remove: function(job) {
+        let pos;
+        while ( (pos = this.jobs.indexOf(job)) !== -1 ) {
+            this.jobs.splice(pos, 1);
+        }
+    }
 };
-})();
 
 /******************************************************************************/
 
@@ -77,9 +79,10 @@ vAPI.messaging = {
     port: null,
     portTimer: null,
     portTimerDelay: 10000,
-    listeners: new Set(),
+    extended: undefined,
+    extensions: [],
+    msgIdGenerator: 1,
     pending: new Map(),
-    auxProcessId: 1,
     shuttingDown: false,
 
     shutdown: function() {
@@ -87,41 +90,53 @@ vAPI.messaging = {
         this.destroyPort();
     },
 
+    // https://github.com/uBlockOrigin/uBlock-issues/issues/403
+    //   Spurious disconnection can happen, so do not consider such events
+    //   as world-ending, i.e. stay around. Except for embedded frames.
+
     disconnectListener: function() {
         this.port = null;
+        if ( window !== window.top ) {
             vAPI.shutdown.exec();
+        }
     },
     disconnectListenerBound: null,
 
     messageListener: function(details) {
-        if ( !details ) { return; }
-
-        // Sent to all listeners
-        if ( details.broadcast ) {
-            this.sendToListeners(details.msg);
-            return;
-        }
+        if ( details instanceof Object === false ) { return; }
 
         // Response to specific message previously sent
-        var listener;
-        if ( details.auxProcessId ) {
-            listener = this.pending.get(details.auxProcessId);
-            if ( listener !== undefined ) {
-                this.pending.delete(details.auxProcessId);
-                listener(details.msg);
+        if ( details.msgId !== undefined ) {
+            const resolver = this.pending.get(details.msgId);
+            if ( resolver !== undefined ) {
+                this.pending.delete(details.msgId);
+                resolver(details.msg);
                 return;
             }
         }
+
+        // Unhandled messages
+        this.extensions.every(ext => ext.canProcessMessage(details) !== true);
+    },
+    messageListenerBound: null,
+
+    canDestroyPort: function() {
+        return this.pending.size === 0 &&
+            (
+                this.extensions.length === 0 ||
+                this.extensions.every(e => e.canDestroyPort())
+            );
+    },
+
+    mustDestroyPort: function() {
+        if ( this.extensions.length === 0 ) { return; }
+        this.extensions.forEach(e => e.mustDestroyPort());
+        this.extensions.length = 0;
     },
-    messageListenerCallback: null,
 
     portPoller: function() {
         this.portTimer = null;
-        if (
-            this.port !== null &&
-            this.listeners.size === 0 &&
-            this.pending.size === 0
-        ) {
+        if ( this.port !== null && this.canDestroyPort() ) {
             return this.destroyPort();
         }
         this.portTimer = vAPI.setTimeout(this.portPollerBound, this.portTimerDelay);
@@ -134,40 +149,43 @@ vAPI.messaging = {
             clearTimeout(this.portTimer);
             this.portTimer = null;
         }
-        var port = this.port;
+        const port = this.port;
         if ( port !== null ) {
             port.disconnect();
-            port.onMessage.removeListener(this.messageListenerCallback);
+            port.onMessage.removeListener(this.messageListenerBound);
             port.onDisconnect.removeListener(this.disconnectListenerBound);
             this.port = null;
         }
-        this.listeners.clear();
+        this.mustDestroyPort();
         // service pending callbacks
         if ( this.pending.size !== 0 ) {
-            var pending = this.pending;
+            const pending = this.pending;
             this.pending = new Map();
-            for ( var callback of pending.values() ) {
-                if ( typeof callback === 'function' ) {
-                    callback(null);
-                }
+            for ( const resolver of pending.values() ) {
+                resolver();
             }
         }
     },
 
     createPort: function() {
         if ( this.shuttingDown ) { return null; }
-        if ( this.messageListenerCallback === null ) {
-            this.messageListenerCallback = this.messageListener.bind(this);
+        if ( this.messageListenerBound === null ) {
+            this.messageListenerBound = this.messageListener.bind(this);
             this.disconnectListenerBound = this.disconnectListener.bind(this);
             this.portPollerBound = this.portPoller.bind(this);
         }
         try {
-            this.port = chrome.runtime.connect({name: vAPI.sessionId}) || null;
+            this.port = browser.runtime.connect({name: vAPI.sessionId}) || null;
         } catch (ex) {
             this.port = null;
         }
-        if ( this.port !== null ) {
-            this.port.onMessage.addListener(this.messageListenerCallback);
+        // Not having a valid port at this point means the main process is
+        // not available: no point keeping the content scripts alive.
+        if ( this.port === null ) {
+            vAPI.shutdown.exec();
+            return null;
+        }
+        this.port.onMessage.addListener(this.messageListenerBound);
         this.port.onDisconnect.addListener(this.disconnectListenerBound);
         this.portTimerDelay = 10000;
         if ( this.portTimer === null ) {
@@ -176,7 +194,6 @@ vAPI.messaging = {
                 this.portTimerDelay
             );
         }
-        }
         return this.port;
     },
 
@@ -184,70 +201,68 @@ vAPI.messaging = {
         return this.port !== null ? this.port : this.createPort();
     },
 
-    send: function(channelName, message, callback) {
+    send: function(channel, msg) {
         // Too large a gap between the last request and the last response means
         // the main process is no longer reachable: memory leaks and bad
         // performance become a risk -- especially for long-lived, dynamic
         // pages. Guard against this.
-        if ( this.pending.size > 25 ) {
+        if ( this.pending.size > 50 ) {
             vAPI.shutdown.exec();
         }
-        var port = this.getPort();
+        const port = this.getPort();
         if ( port === null ) {
-            if ( typeof callback === 'function' ) { callback(); }
-            return;
+            return Promise.resolve();
         }
-        var auxProcessId;
-        if ( callback ) {
-            auxProcessId = this.auxProcessId++;
-            this.pending.set(auxProcessId, callback);
-        }
-        port.postMessage({
-            channelName: channelName,
-            auxProcessId: auxProcessId,
-            msg: message
+        const msgId = this.msgIdGenerator++;
+        const promise = new Promise(resolve => {
+            this.pending.set(msgId, resolve);
         });
+        port.postMessage({ channel, msgId, msg });
+        return promise;
     },
 
-    addListener: function(listener) {
-        this.listeners.add(listener);
-        this.getPort();
+    // Dynamically extend capabilities.
+    extend: function() {
+        if ( this.extended === undefined ) {
+            this.extended = vAPI.messaging.send('vapi', {
+                what: 'extendClient'
+            }).then(( ) => {
+                return self.vAPI instanceof Object &&
+                       this.extensions.length !== 0;
+            }).catch(( ) => {
+            });
+        }
+        return this.extended;
     },
+};
 
-    removeListener: function(listener) {
-        this.listeners.delete(listener);
-    },
+vAPI.shutdown.add(( ) => {
+    vAPI.messaging.shutdown();
+    window.vAPI = undefined;
+});
 
-    removeAllListeners: function() {
-        this.listeners.clear();
-    },
+/******************************************************************************/
+/******************************************************************************/
 
-    sendToListeners: function(msg) {
-        for ( var listener of this.listeners ) {
-            listener(msg);
-        }
 }
-};
+// <<<<<<<< end of HUGE-IF-BLOCK
 
-/******************************************************************************/
 
-// No need to have vAPI client linger around after shutdown if
-// we are not a top window (because element picker can still
-// be injected in top window).
-if ( window !== window.top ) {
-    vAPI.shutdown.add(function() {
-        vAPI = null;
-    });
-}
 
-/******************************************************************************/
 
-vAPI.setTimeout = vAPI.setTimeout || function(callback, delay) {
-    setTimeout(function() { callback(); }, delay);
-};
 
-/******************************************************************************/
 
-})(this); // jshint ignore: line
 
-/******************************************************************************/
+
+/*******************************************************************************
+
+    DO NOT:
+    - Remove the following code
+    - Add code beyond the following code
+    Reason:
+    - https://github.com/gorhill/uBlock/pull/3721
+    - uBO never uses the return value from injected content scripts
+
+**/
+
+void 0;

platform/chromium/vapi-common.js

@@ -23,32 +23,14 @@
 
 'use strict';
 
-/******************************************************************************/
-
-if ( self.browser instanceof Object ) {
-    self.chrome = self.browser;
-} else {
-    self.browser = self.chrome;
-}
-
 /******************************************************************************/
 /******************************************************************************/
 
-(function(self) {
+vAPI.T0 = Date.now();
 
 /******************************************************************************/
 
-// https://bugs.chromium.org/p/project-zero/issues/detail?id=1225&desc=6#c10
-if ( self.vAPI === undefined || self.vAPI.uMatrix !== true ) {
-    self.vAPI = { uMatrix: true };
-}
-
-var vAPI = self.vAPI;
-var chrome = self.chrome;
-
-/******************************************************************************/
-
-vAPI.setTimeout = vAPI.setTimeout || window.setTimeout.bind(window);
+vAPI.setTimeout = vAPI.setTimeout || self.setTimeout.bind(self);
 
 /******************************************************************************/
 
@@ -57,113 +39,182 @@ vAPI.webextFlavor = {
     soup: new Set()
 };
 
-(function() {
-    var ua = navigator.userAgent,
-        flavor = vAPI.webextFlavor,
-        soup = flavor.soup;
-    var dispatch = function() {
+(( ) => {
+    const ua = navigator.userAgent;
+    const flavor = vAPI.webextFlavor;
+    const soup = flavor.soup;
+    const dispatch = function() {
         window.dispatchEvent(new CustomEvent('webextFlavor'));
     };
 
     // This is always true.
-    soup.add('ublock');
+    soup.add('ublock').add('webext');
+
+    // Whether this is a dev build.
+    if ( /^\d+\.\d+\.\d+\D/.test(browser.runtime.getManifest().version) ) {
+        soup.add('devbuild');
+    }
 
     if ( /\bMobile\b/.test(ua) ) {
         soup.add('mobile');
     }
 
     // Asynchronous
-    var async = self.browser instanceof Object &&
-                typeof self.browser.runtime.getBrowserInfo === 'function';
-    if ( async ) {
-        self.browser.runtime.getBrowserInfo().then(function(info) {
-            flavor.major = parseInt(info.version, 10) || 0;
+    if (
+        browser instanceof Object &&
+        typeof browser.runtime.getBrowserInfo === 'function'
+    ) {
+        browser.runtime.getBrowserInfo().then(info => {
+            flavor.major = parseInt(info.version, 10) || 60;
             soup.add(info.vendor.toLowerCase())
                 .add(info.name.toLowerCase());
-            if ( flavor.major >= 53 ) { soup.add('user_stylesheet'); }
-            if ( flavor.major >= 57 ) { soup.add('html_filtering'); }
+            if ( soup.has('firefox') && flavor.major < 57 ) {
+                soup.delete('html_filtering');
+            }
             dispatch();
         });
+        if ( browser.runtime.getURL('').startsWith('moz-extension://') ) {
+            soup.add('mozilla')
+                .add('firefox')
+                .add('user_stylesheet')
+                .add('html_filtering');
+            flavor.major = 60;
+        }
+        return;
     }
 
-    // Synchronous
-    var match = /Firefox\/([\d.]+)/.exec(ua);
-    if ( match !== null ) {
+    // Synchronous -- order of tests is important
+    let match;
+    if ( (match = /\bEdge\/(\d+)/.exec(ua)) !== null ) {
         flavor.major = parseInt(match[1], 10) || 0;
-        soup.add('mozilla')
-            .add('firefox');
-        if ( flavor.major >= 53 ) { soup.add('user_stylesheet'); }
-        if ( flavor.major >= 57 ) { soup.add('html_filtering'); }
-    } else {
-        match = /OPR\/([\d.]+)/.exec(ua);
-        if ( match !== null ) {
-            var reEx = /Chrom(?:e|ium)\/([\d.]+)/;
+        soup.add('microsoft').add('edge');
+    } else if ( (match = /\bOPR\/(\d+)/.exec(ua)) !== null ) {
+        const reEx = /\bChrom(?:e|ium)\/([\d.]+)/;
         if ( reEx.test(ua) ) { match = reEx.exec(ua); }
         flavor.major = parseInt(match[1], 10) || 0;
         soup.add('opera').add('chromium');
-        } else {
-            match = /Chromium\/([\d.]+)/.exec(ua);
-            if ( match !== null ) {
+    } else if ( (match = /\bChromium\/(\d+)/.exec(ua)) !== null ) {
         flavor.major = parseInt(match[1], 10) || 0;
         soup.add('chromium');
-            } else {
-                match = /Chrome\/([\d.]+)/.exec(ua);
-                if ( match !== null ) {
+    } else if ( (match = /\bChrome\/(\d+)/.exec(ua)) !== null ) {
         flavor.major = parseInt(match[1], 10) || 0;
         soup.add('google').add('chromium');
+    } else if ( (match = /\bSafari\/(\d+)/.exec(ua)) !== null ) {
+        flavor.major = parseInt(match[1], 10) || 0;
+        soup.add('apple').add('safari');
     }
-            }
-        }
+
     // https://github.com/gorhill/uBlock/issues/3588
-        if ( soup.has('chromium') && flavor.major >= 67 ) {
+    if ( soup.has('chromium') && flavor.major >= 66 ) {
         soup.add('user_stylesheet');
     }
-    }
 
     // Don't starve potential listeners
-    if ( !async ) {
     vAPI.setTimeout(dispatch, 97);
-    }
 })();
 
 /******************************************************************************/
 
-// http://www.w3.org/International/questions/qa-scripts#directions
+{
+    const punycode = self.punycode;
+    const reCommonHostnameFromURL  = /^https?:\/\/([0-9a-z_][0-9a-z._-]*[0-9a-z])\//;
+    const reAuthorityFromURI       = /^(?:[^:\/?#]+:)?(\/\/[^\/?#]+)/;
+    const reHostFromNakedAuthority = /^[0-9a-z._-]+[0-9a-z]$/i;
+    const reHostFromAuthority      = /^(?:[^@]*@)?([^:]+)(?::\d*)?$/;
+    const reIPv6FromAuthority      = /^(?:[^@]*@)?(\[[0-9a-f:]+\])(?::\d*)?$/i;
+    const reMustNormalizeHostname  = /[^0-9a-z._-]/;
+
+    vAPI.hostnameFromURI = function(uri) {
+        let matches = reCommonHostnameFromURL.exec(uri);
+        if ( matches !== null ) { return matches[1]; }
+        matches = reAuthorityFromURI.exec(uri);
+        if ( matches === null ) { return ''; }
+        const authority = matches[1].slice(2);
+        if ( reHostFromNakedAuthority.test(authority) ) {
+            return authority.toLowerCase();
+        }
+        matches = reHostFromAuthority.exec(authority);
+        if ( matches === null ) {
+            matches = reIPv6FromAuthority.exec(authority);
+            if ( matches === null ) { return ''; }
+        }
+        let hostname = matches[1];
+        while ( hostname.endsWith('.') ) {
+            hostname = hostname.slice(0, -1);
+        }
+        if ( reMustNormalizeHostname.test(hostname) ) {
+            hostname = punycode.toASCII(hostname.toLowerCase());
+        }
+        return hostname;
+    };
 
-var setScriptDirection = function(language) {
-    document.body.setAttribute(
-        'dir',
-        ['ar', 'he', 'fa', 'ps', 'ur'].indexOf(language) !== -1 ? 'rtl' : 'ltr'
-    );
+    const reHostnameFromNetworkURL =
+        /^(?:http|ws|ftp)s?:\/\/([0-9a-z_][0-9a-z._-]*[0-9a-z])\//;
+
+    vAPI.hostnameFromNetworkURL = function(url) {
+        const matches = reHostnameFromNetworkURL.exec(url);
+        return matches !== null ? matches[1] : '';
     };
 
-/******************************************************************************/
+    const psl = self.publicSuffixList;
+    const reIPAddressNaive = /^\d+\.\d+\.\d+\.\d+$|^\[[\da-zA-Z:]+\]$/;
 
-vAPI.download = function(details) {
-    if ( !details.url ) {
-        return;
+    vAPI.domainFromHostname = function(hostname) {
+        return reIPAddressNaive.test(hostname)
+            ? hostname
+            : psl.getDomain(hostname);
+    };
+
+    vAPI.domainFromURI = function(uri) {
+        return uri !== ''
+            ? vAPI.domainFromHostname(vAPI.hostnameFromURI(uri))
+            : '';
+    };
 }
 
-    var a = document.createElement('a');
+/******************************************************************************/
+
+vAPI.download = function(details) {
+    if ( !details.url ) { return; }
+    const a = document.createElement('a');
     a.href = details.url;
     a.setAttribute('download', details.filename || '');
+    a.setAttribute('type', 'text/plain');
     a.dispatchEvent(new MouseEvent('click'));
 };
 
 /******************************************************************************/
 
-vAPI.getURL = chrome.runtime.getURL;
+vAPI.getURL = browser.runtime.getURL;
 
 /******************************************************************************/
 
-vAPI.i18n = chrome.i18n.getMessage;
+vAPI.i18n = browser.i18n.getMessage;
 
-setScriptDirection(vAPI.i18n('@@ui_locale'));
+// http://www.w3.org/International/questions/qa-scripts#directions
+document.body.setAttribute(
+    'dir',
+    ['ar', 'he', 'fa', 'ps', 'ur'].indexOf(vAPI.i18n('@@ui_locale')) !== -1
+        ? 'rtl'
+        : 'ltr'
+);
 
 /******************************************************************************/
 
+// https://github.com/gorhill/uBlock/issues/3057
+// - webNavigation.onCreatedNavigationTarget become broken on Firefox when we
+//   try to make the popup panel close itself using the original
+//   `window.open('', '_self').close()`. 
+
 vAPI.closePopup = function() {
+    if ( vAPI.webextFlavor.soup.has('firefox') ) {
         window.close();
+        return;
+    }
+
+    // TODO: try to figure why this was used instead of a plain window.close().
+    // https://github.com/gorhill/uBlock/commit/b301ac031e0c2e9a99cb6f8953319d44e22f33d2#diff-bc664f26b9c453e0d43a9379e8135c6a
+    window.open('', '_self').close();
 };
 
 /******************************************************************************/
@@ -207,8 +258,22 @@ vAPI.localStorage = {
     }
 };
 
-/******************************************************************************/
 
-})(this);
 
-/******************************************************************************/
+
+
+
+
+
+/*******************************************************************************
+
+    DO NOT:
+    - Remove the following code
+    - Add code beyond the following code
+    Reason:
+    - https://github.com/gorhill/uBlock/pull/3721
+    - uBO never uses the return value from injected content scripts
+
+**/
+
+void 0;

platform/chromium/vapi-webrequest.js

@@ -25,40 +25,17 @@
 
 /******************************************************************************/
 
-(function() {
+(( ) => {
+    // https://github.com/uBlockOrigin/uBlock-issues/issues/407
+    if ( vAPI.webextFlavor.soup.has('chromium') === false ) { return; }
+
     const extToTypeMap = new Map([
         ['eot','font'],['otf','font'],['svg','font'],['ttf','font'],['woff','font'],['woff2','font'],
         ['mp3','media'],['mp4','media'],['webm','media'],
         ['gif','image'],['ico','image'],['jpeg','image'],['jpg','image'],['png','image'],['webp','image']
     ]);
 
-    // https://www.reddit.com/r/uBlockOrigin/comments/9vcrk3/bug_in_ubo_1173_betas_when_saving_files_hosted_on/
-    //   Some types can be mapped from 'other', thus include 'other' if and
-    //   only if the caller is interested in at least one of those types.
-    const denormalizeTypes = function(aa) {
-        if ( aa.length === 0 ) {
-            return Array.from(vAPI.net.validTypes);
-        }
-        const out = new Set();
-        let i = aa.length;
-        while ( i-- ) {
-            const type = aa[i];
-            if ( vAPI.net.validTypes.has(type) ) {
-                out.add(type);
-            }
-        }
-        if ( out.has('other') === false ) {
-            for ( const type of extToTypeMap.values() ) {
-                if ( out.has(type) ) {
-                    out.add('other');
-                    break;
-                }
-            }
-        }
-        return Array.from(out);
-    };
-
-    const headerValue = function(headers, name) {
+    const headerValue = (headers, name) => {
         let i = headers.length;
         while ( i-- ) {
             if ( headers[i].name.toLowerCase() === name ) {
@@ -70,29 +47,24 @@
 
     const parsedURL = new URL('https://www.example.org/');
 
-    vAPI.net.normalizeDetails = function(details) {
-        let type = details.type;
+    // Extend base class to normalize as per platform.
 
-        // https://github.com/uBlockOrigin/uMatrix-issues/issues/156#issuecomment-494427094
-        if ( type === 'main_frame' ) {
-            details.documentUrl = details.url;
+    vAPI.Net = class extends vAPI.Net {
+        constructor() {
+            super();
+            this.suspendedTabIds = new Set();
         }
+        normalizeDetails(details) {
             // Chromium 63+ supports the `initiator` property, which contains
             // the URL of the origin from which the network request was made.
-        else if (
+            if (
                 typeof details.initiator === 'string' &&
                 details.initiator !== 'null'
             ) {
                 details.documentUrl = details.initiator;
             }
 
-        // https://github.com/gorhill/uBlock/issues/1493
-        // Chromium 49+/WebExtensions support a new request type: `ping`,
-        // which is fired as a result of using `navigator.sendBeacon`.
-        if ( type === 'ping' ) {
-            details.type = 'beacon';
-            return;
-        }
+            let type = details.type;
 
             if ( type === 'imageset' ) {
                 details.type = 'image';
@@ -127,71 +99,79 @@
                     return;
                 }
             }
-    };
-
-    vAPI.net.denormalizeFilters = function(filters) {
-        const urls = filters.urls || [ '<all_urls>' ];
-        let types = filters.types;
-        if ( Array.isArray(types) ) {
-            types = denormalizeTypes(types);
         }
-        if (
-            (vAPI.net.validTypes.has('websocket')) &&
-            (types === undefined || types.indexOf('websocket') !== -1) &&
-            (urls.indexOf('<all_urls>') === -1)
-        ) {
-            if ( urls.indexOf('ws://*/*') === -1 ) {
-                urls.push('ws://*/*');
+        // https://www.reddit.com/r/uBlockOrigin/comments/9vcrk3/
+        //   Some types can be mapped from 'other', thus include 'other' if and
+        //   only if the caller is interested in at least one of those types.
+        denormalizeTypes(types) {
+            if ( types.length === 0 ) {
+                return Array.from(this.validTypes);
+            }
+            const out = new Set();
+            for ( const type of types ) {
+                if ( this.validTypes.has(type) ) {
+                    out.add(type);
+                }
+            }
+            if ( out.has('other') === false ) {
+                for ( const type of extToTypeMap.values() ) {
+                    if ( out.has(type) ) {
+                        out.add('other');
+                        break;
                     }
-            if ( urls.indexOf('wss://*/*') === -1 ) {
-                urls.push('wss://*/*');
                 }
             }
-        return { types, urls };
+            return Array.from(out);
+        }
+        suspendOneRequest(details) {
+            this.suspendedTabIds.add(details.tabId);
+            return { cancel: true };
+        }
+        unsuspendAllRequests() {
+            for ( const tabId of this.suspendedTabIds ) {
+                vAPI.tabs.reload(tabId);
+            }
+            this.suspendedTabIds.clear();
+        }
     };
 })();
 
 /******************************************************************************/
 
-// https://github.com/gorhill/uBlock/issues/2067
-//   Experimental: Block everything until uBO is fully ready.
-
-vAPI.net.onBeforeReady = (function() {
-    let pendings;
+// https://github.com/uBlockOrigin/uBlock-issues/issues/548
+//   Use `X-DNS-Prefetch-Control` to workaround Chromium's disregard of the
+//   setting "Predict network actions to improve page load performance".
 
-    const handler = function(details) {
-        if ( pendings === undefined ) { return; }
-        if ( details.tabId < 0 ) { return; }
+vAPI.prefetching = (( ) => {
+    // https://github.com/uBlockOrigin/uBlock-issues/issues/407
+    if ( vAPI.webextFlavor.soup.has('chromium') === false ) { return; }
 
-        pendings.add(details.tabId);
+    let listening = false;
 
-        //console.log(`Aborting tab ${details.tabId}: ${details.type} ${details.url}`);
-
-        return { cancel: true };
+    const onHeadersReceived = function(details) {
+        details.responseHeaders.push({
+            name: 'X-DNS-Prefetch-Control',
+            value: 'off'
+        });
+        return { responseHeaders: details.responseHeaders };
     };
 
-    return {
-        experimental: true,
-        start: function() {
-            pendings = new Set();
-            browser.webRequest.onBeforeRequest.addListener(
-                handler,
-                { urls: [ 'http://*/*', 'https://*/*' ] },
-                [ 'blocking' ]
-            );
+    return state => {
+        const wr = chrome.webRequest;
+        if ( state && listening ) {
+            wr.onHeadersReceived.removeListener(onHeadersReceived);
+            listening = false;
+        } else if ( !state && !listening ) {
+            wr.onHeadersReceived.addListener(
+                onHeadersReceived,
+                {
+                    urls: [ 'http://*/*', 'https://*/*' ],
+                    types: [ 'main_frame', 'sub_frame' ]
                 },
-        // https://github.com/gorhill/uBlock/issues/2067
-        //   Force-reload tabs for which network requests were blocked
-        //   during launch. This can happen only if tabs were "suspended".
-        stop: function() {
-            if ( pendings === undefined ) { return; }
-            browser.webRequest.onBeforeRequest.removeListener(handler);
-            for ( const tabId of pendings ) {
-                //console.log(`Reloading tab ${tabId}`);
-                vAPI.tabs.reload(tabId);
+                [ 'blocking', 'responseHeaders' ]
+            );
+            listening = true;
         }
-            pendings = undefined;
-        },
     };
 })();
 

platform/chromium/vapi.js

@@ -0,0 +1,86 @@
+/*******************************************************************************
+
+    uMatrix - a browser extension to block requests.
+    Copyright (C) 2017-present Raymond Hill
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see {http://www.gnu.org/licenses/}.
+
+    Home: https://github.com/gorhill/uBlock
+*/
+
+'use strict';
+
+/* global HTMLDocument, XMLDocument */
+
+// For background page, auxiliary pages, and content scripts.
+
+/******************************************************************************/
+
+if ( self.browser instanceof Object ) {
+    self.chrome = self.browser;
+} else {
+    self.browser = self.chrome;
+}
+
+/******************************************************************************/
+
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1408996#c9
+var vAPI = self.vAPI; // jshint ignore:line
+
+// https://github.com/chrisaljoudi/uBlock/issues/464
+// https://github.com/chrisaljoudi/uBlock/issues/1528
+//   A XMLDocument can be a valid HTML document.
+
+// https://github.com/gorhill/uBlock/issues/1124
+//   Looks like `contentType` is on track to be standardized:
+//   https://dom.spec.whatwg.org/#concept-document-content-type
+
+// https://forums.lanik.us/viewtopic.php?f=64&t=31522
+//   Skip text/plain documents.
+
+if (
+    (
+        document instanceof HTMLDocument ||
+        document instanceof XMLDocument &&
+        document.createElement('div') instanceof HTMLDivElement
+    ) &&
+    (
+        /^image\/|^text\/plain/.test(document.contentType || '') === false
+    ) &&
+    (
+        self.vAPI instanceof Object === false || vAPI.uMatrix !== true
+    )
+) {
+    vAPI = self.vAPI = { uMatrix: true };
+}
+
+
+
+
+
+
+
+
+/*******************************************************************************
+
+    DO NOT:
+    - Remove the following code
+    - Add code beyond the following code
+    Reason:
+    - https://github.com/gorhill/uBlock/pull/3721
+    - uMatrix never uses the return value from injected content scripts
+
+**/
+
+void 0;

platform/chromium/webext.js

@@ -0,0 +1,176 @@
+/*******************************************************************************
+
+    uBlock Origin - a browser extension to block requests.
+    Copyright (C) 2019-present Raymond Hill
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see {http://www.gnu.org/licenses/}.
+
+    Home: https://github.com/gorhill/uBlock
+*/
+
+'use strict';
+
+// `webext` is a promisified api of `chrome`. Entries are added as
+// the promisification of uBO progress.
+
+const webext = (( ) => {        // jshint ignore:line
+// >>>>> start of private scope
+
+const noopFunc = ( ) => { };
+
+const promisifyNoFail = function(thisArg, fnName, outFn = r => r) {
+    const fn = thisArg[fnName];
+    return function() {
+        return new Promise(resolve => {
+            fn.call(thisArg, ...arguments, function() {
+                if ( chrome.runtime.lastError instanceof Object ) {
+                    void chrome.runtime.lastError.message;
+                }
+                resolve(outFn(...arguments));
+            });
+        });
+    };
+};
+
+const promisify = function(thisArg, fnName) {
+    const fn = thisArg[fnName];
+    return function() {
+        return new Promise((resolve, reject) => {
+            fn.call(thisArg, ...arguments, function() {
+                const lastError = chrome.runtime.lastError;
+                if ( lastError instanceof Object ) {
+                    return reject(lastError.message);
+                }
+                resolve(...arguments);
+            });
+        });
+    };
+};
+
+const webext = {
+    // https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/browserAction
+    browserAction: {
+        setBadgeBackgroundColor: promisifyNoFail(chrome.browserAction, 'setBadgeBackgroundColor'),
+        setBadgeText: promisifyNoFail(chrome.browserAction, 'setBadgeText'),
+        setBadgeTextColor: noopFunc,
+        setIcon: promisifyNoFail(chrome.browserAction, 'setIcon'),
+        setTitle: promisifyNoFail(chrome.browserAction, 'setTitle'),
+    },
+    cookies: {
+        getAll: promisifyNoFail(chrome.cookies, 'getAll'),
+        remove: promisifyNoFail(chrome.cookies, 'remove'),
+    },
+    // https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/menus
+    /*
+    menus: {
+        create: function() {
+            return chrome.contextMenus.create(...arguments, ( ) => {
+                void chrome.runtime.lastError;
+            });
+        },
+        onClicked: chrome.contextMenus.onClicked,
+        remove: promisifyNoFail(chrome.contextMenus, 'remove'),
+    },
+    */
+    // https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/privacy
+    privacy: {
+    },
+    // https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/storage
+    storage: {
+        // https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/storage/local
+        local: {
+            clear: promisify(chrome.storage.local, 'clear'),
+            get: promisify(chrome.storage.local, 'get'),
+            getBytesInUse: promisify(chrome.storage.local, 'getBytesInUse'),
+            remove: promisify(chrome.storage.local, 'remove'),
+            set: promisify(chrome.storage.local, 'set'),
+        },
+    },
+    // https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs
+    tabs: {
+        get: promisifyNoFail(chrome.tabs, 'get', tab => tab instanceof Object ? tab : null),
+        executeScript: promisifyNoFail(chrome.tabs, 'executeScript'),
+        insertCSS: promisifyNoFail(chrome.tabs, 'insertCSS'),
+        query: promisifyNoFail(chrome.tabs, 'query', tabs => Array.isArray(tabs) ? tabs : []),
+        reload: promisifyNoFail(chrome.tabs, 'reload'),
+        remove: promisifyNoFail(chrome.tabs, 'remove'),
+        update: promisifyNoFail(chrome.tabs, 'update', tab => tab instanceof Object ? tab : null),
+    },
+    // https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/webNavigation
+    webNavigation: {
+        getFrame: promisify(chrome.webNavigation, 'getFrame'),
+    },
+    // https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/windows
+    windows: {
+        get: promisifyNoFail(chrome.windows, 'get', win => win instanceof Object ? win : null),
+        create: promisifyNoFail(chrome.windows, 'create', win => win instanceof Object ? win : null),
+        update: promisifyNoFail(chrome.windows, 'update', win => win instanceof Object ? win : null),
+    },
+};
+
+// browser.privacy entries
+{
+    const settings = [
+        // https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/privacy/network
+        [ 'network', 'networkPredictionEnabled' ],
+        [ 'network', 'webRTCIPHandlingPolicy' ],
+        // https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/privacy/websites
+        [ 'websites', 'hyperlinkAuditingEnabled' ],
+    ];
+    for ( const [ category, setting ] of settings ) {
+        let categoryEntry = webext.privacy[category];
+        if ( categoryEntry instanceof Object === false ) {
+            categoryEntry = webext.privacy[category] = {};
+        }
+        const settingEntry = categoryEntry[setting] = {};
+        const thisArg = chrome.privacy[category][setting];
+        settingEntry.clear = promisifyNoFail(thisArg, 'clear');
+        settingEntry.get = promisifyNoFail(thisArg, 'get');
+        settingEntry.set = promisifyNoFail(thisArg, 'set');
+    }
+}
+
+// https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/storage/managed
+if ( chrome.storage.managed instanceof Object ) {
+    webext.storage.managed = {
+        get: promisify(chrome.storage.managed, 'get'),
+    };
+}
+
+// https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/storage/sync
+if ( chrome.storage.sync instanceof Object ) {
+    webext.storage.sync = {
+        QUOTA_BYTES: chrome.storage.sync.QUOTA_BYTES,
+        QUOTA_BYTES_PER_ITEM: chrome.storage.sync.QUOTA_BYTES_PER_ITEM,
+        MAX_ITEMS: chrome.storage.sync.MAX_ITEMS,
+        MAX_WRITE_OPERATIONS_PER_HOUR: chrome.storage.sync.MAX_WRITE_OPERATIONS_PER_HOUR,
+        MAX_WRITE_OPERATIONS_PER_MINUTE: chrome.storage.sync.MAX_WRITE_OPERATIONS_PER_MINUTE,
+
+        clear: promisify(chrome.storage.sync, 'clear'),
+        get: promisify(chrome.storage.sync, 'get'),
+        getBytesInUse: promisify(chrome.storage.sync, 'getBytesInUse'),
+        remove: promisify(chrome.storage.sync, 'remove'),
+        set: promisify(chrome.storage.sync, 'set'),
+    };
+}
+
+// https://bugs.chromium.org/p/chromium/issues/detail?id=608854
+if ( chrome.tabs.removeCSS instanceof Function ) {
+    webext.tabs.removeCSS = promisifyNoFail(chrome.tabs, 'removeCSS');
+}
+
+return webext;
+
+// <<<<< end of private scope
+})();

platform/firefox/manifest.json

@@ -46,6 +46,7 @@
     "permissions": [
         "browsingData",
         "cookies",
+        "dns",
         "privacy",
         "storage",
         "tabs",

platform/firefox/vapi-cachestorage.js

@@ -1,263 +0,0 @@
-/*******************************************************************************
-
-    uMatrix - a browser extension to block requests.
-    Copyright (C) 2016-2017 The uBlock Origin authors
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see {http://www.gnu.org/licenses/}.
-
-    Home: https://github.com/gorhill/uBlock
-*/
-
-/* global indexedDB, IDBDatabase */
-
-'use strict';
-
-/******************************************************************************/
-
-// The code below has been originally manually imported from:
-// Commit: https://github.com/nikrolls/uBlock-Edge/commit/d1538ea9bea89d507219d3219592382eee306134
-// Commit date: 29 October 2016
-// Commit author: https://github.com/nikrolls
-// Commit message: "Implement cacheStorage using IndexedDB"
-
-// The original imported code has been subsequently modified as it was not
-// compatible with Firefox.
-// (a Promise thing, see https://github.com/dfahlander/Dexie.js/issues/317)
-// Furthermore, code to migrate from browser.storage.local to vAPI.cacheStorage
-// has been added, for seamless migration of cache-related entries into
-// indexedDB.
-
-// Imported from uBlock Origin project.
-
-vAPI.cacheStorage = (function() {
-    const STORAGE_NAME = 'uMatrixCacheStorage';
-    var db;
-    var pending = [];
-
-    // prime the db so that it's ready asap for next access.
-    getDb(noopfn);
-
-    return { get, set, remove, clear, getBytesInUse };
-
-    function get(input, callback) {
-        if ( typeof callback !== 'function' ) { return; }
-        if ( input === null ) {
-            return getAllFromDb(callback);
-        }
-        var toRead, output = {};
-        if ( typeof input === 'string' ) {
-            toRead = [ input ];
-        } else if ( Array.isArray(input) ) {
-            toRead = input;
-        } else /* if ( typeof input === 'object' ) */ {
-            toRead = Object.keys(input);
-            output = input;
-        }
-        return getFromDb(toRead, output, callback);
-    }
-
-    function set(input, callback) {
-        putToDb(input, callback);
-    }
-
-    function remove(key, callback) {
-        deleteFromDb(key, callback);
-    }
-
-    function clear(callback) {
-        clearDb(callback);
-    }
-
-    function getBytesInUse(keys, callback) {
-        // TODO: implement this
-        callback(0);
-    }
-
-    function genericErrorHandler(error) {
-        console.error('[%s]', STORAGE_NAME, error);
-    }
-
-    function noopfn() {
-    }
-
-    function processPendings() {
-        var cb;
-        while ( (cb = pending.shift()) ) {
-            cb(db);
-        }
-    }
-
-    function getDb(callback) {
-        if ( pending === undefined ) {
-            return callback();
-        }
-        if ( pending.length !== 0 ) {
-            return pending.push(callback);
-        }
-        if ( db instanceof IDBDatabase ) {
-            return callback(db);
-        }
-        pending.push(callback);
-        if ( pending.length !== 1 ) { return; }
-        // https://github.com/gorhill/uBlock/issues/3156
-        //   I have observed that no event was fired in Tor Browser 7.0.7 +
-        //   medium security level after the request to open the database was
-        //   created. When this occurs, I have also observed that the `error`
-        //   property was already set, so this means uBO can detect here whether
-        //   the database can be opened successfully. A try-catch block is
-        //   necessary when reading the `error` property because we are not
-        //   allowed to read this propery outside of event handlers in newer
-        //   implementation of IDBRequest (my understanding).
-        var req;
-        try {
-            req = indexedDB.open(STORAGE_NAME, 1);
-            if ( req.error ) {
-                console.log(req.error);
-                req = undefined;
-            }
-        } catch(ex) {
-        }
-        if ( req === undefined ) {
-            processPendings();
-            pending = undefined;
-            return;
-        }
-        req.onupgradeneeded = function(ev) {
-            req = undefined;
-            db = ev.target.result;
-            db.onerror = db.onabort = genericErrorHandler;
-            var table = db.createObjectStore(STORAGE_NAME, { keyPath: 'key' });
-            table.createIndex('value', 'value', { unique: false });
-        };
-        req.onsuccess = function(ev) {
-            req = undefined;
-            db = ev.target.result;
-            db.onerror = db.onabort = genericErrorHandler;
-            processPendings();
-        };
-        req.onerror = req.onblocked = function() {
-            req = undefined;
-            console.log(this.error);
-            processPendings();
-            pending = undefined;
-        };
-    }
-
-    function getFromDb(keys, store, callback) {
-        if ( typeof callback !== 'function' ) { return; }
-        if ( keys.length === 0 ) { return callback(store); }
-        var gotOne = function() {
-            if ( typeof this.result === 'object' ) {
-                store[this.result.key] = this.result.value;
-            }
-        };
-        getDb(function(db) {
-            if ( !db ) { return callback(); }
-            var transaction = db.transaction(STORAGE_NAME);
-            transaction.oncomplete =
-            transaction.onerror =
-            transaction.onabort = function() {
-                return callback(store);
-            };
-            var table = transaction.objectStore(STORAGE_NAME);
-            for ( var key of keys ) {
-                var req = table.get(key);
-                req.onsuccess = gotOne;
-                req.onerror = noopfn;
-                req = undefined;
-            }
-        });
-    }
-
-    function getAllFromDb(callback) {
-        if ( typeof callback !== 'function' ) {
-            callback = noopfn;
-        }
-        getDb(function(db) {
-            if ( !db ) { return callback(); }
-            var output = {};
-            var transaction = db.transaction(STORAGE_NAME);
-            transaction.oncomplete =
-            transaction.onerror =
-            transaction.onabort = function() {
-                callback(output);
-            };
-            var table = transaction.objectStore(STORAGE_NAME),
-                req = table.openCursor();
-            req.onsuccess = function(ev) {
-                var cursor = ev.target.result;
-                if ( !cursor ) { return; }
-                output[cursor.key] = cursor.value;
-                cursor.continue();
-            };
-        });
-    }
-
-    function putToDb(input, callback) {
-        if ( typeof callback !== 'function' ) {
-            callback = noopfn;
-        }
-        var keys = Object.keys(input);
-        if ( keys.length === 0 ) { return callback(); }
-        getDb(function(db) {
-            if ( !db ) { return callback(); }
-            var transaction = db.transaction(STORAGE_NAME, 'readwrite');
-            transaction.oncomplete =
-            transaction.onerror =
-            transaction.onabort = callback;
-            var table = transaction.objectStore(STORAGE_NAME);
-            for ( var key of keys ) {
-                var entry = {};
-                entry.key = key;
-                entry.value = input[key];
-                table.put(entry);
-                entry = undefined;
-            }
-        });
-    }
-
-    function deleteFromDb(input, callback) {
-        if ( typeof callback !== 'function' ) {
-            callback = noopfn;
-        }
-        var keys = Array.isArray(input) ? input.slice() : [ input ];
-        if ( keys.length === 0 ) { return callback(); }
-        getDb(function(db) {
-            if ( !db ) { return callback(); }
-            var transaction = db.transaction(STORAGE_NAME, 'readwrite');
-            transaction.oncomplete =
-            transaction.onerror =
-            transaction.onabort = callback;
-            var table = transaction.objectStore(STORAGE_NAME);
-            for ( var key of keys ) {
-                table.delete(key);
-            }
-        });
-    }
-
-    function clearDb(callback) {
-        if ( typeof callback !== 'function' ) {
-            callback = noopfn;
-        }
-        getDb(function(db) {
-            if ( !db ) { return callback(); }
-            var req = db.transaction(STORAGE_NAME, 'readwrite')
-                        .objectStore(STORAGE_NAME)
-                        .clear();
-            req.onsuccess = req.onerror = callback;
-        });
-    }
-}());
-
-/******************************************************************************/

platform/firefox/vapi-webrequest.js

@@ -25,12 +25,14 @@
 
 /******************************************************************************/
 
-(function() {
+(( ) => {
+    // https://github.com/uBlockOrigin/uBlock-issues/issues/407
+    if ( vAPI.webextFlavor.soup.has('firefox') === false ) { return; }
 
     // https://github.com/gorhill/uBlock/issues/2950
     // Firefox 56 does not normalize URLs to ASCII, uBO must do this itself.
     // https://bugzilla.mozilla.org/show_bug.cgi?id=945240
-    const evalMustPunycode = function() {
+    const evalMustPunycode = ( ) => {
         return vAPI.webextFlavor.soup.has('firefox') &&
                vAPI.webextFlavor.major < 57;
     };
@@ -43,32 +45,42 @@
         mustPunycode = evalMustPunycode();
     }, { once: true });
 
-    const denormalizeTypes = function(aa) {
-        if ( aa.length === 0 ) {
-            return Array.from(vAPI.net.validTypes);
-        }
-        const out = new Set();
-        let i = aa.length;
-        while ( i-- ) {
-            let type = aa[i];
-            if ( vAPI.net.validTypes.has(type) ) {
-                out.add(type);
-            }
-            if ( type === 'image' && vAPI.net.validTypes.has('imageset') ) {
-                out.add('imageset');
-            }
-            if ( type === 'sub_frame' ) {
-                out.add('object');
-            }
-        }
-        return Array.from(out);
-    };
-
     const punycode = self.punycode;
     const reAsciiHostname  = /^https?:\/\/[0-9a-z_.:@-]+[/?#]/;
     const parsedURL = new URL('about:blank');
 
-    vAPI.net.normalizeDetails = function(details) {
+    // Related issues:
+    // - https://github.com/gorhill/uBlock/issues/1327
+    // - https://github.com/uBlockOrigin/uBlock-issues/issues/128
+    // - https://bugzilla.mozilla.org/show_bug.cgi?id=1503721
+
+    // Extend base class to normalize as per platform.
+
+    vAPI.Net = class extends vAPI.Net {
+        constructor() {
+            super();
+            this.pendingRequests = [];
+            this.cnames = new Map([ [ '', '' ] ]);
+            this.cnameIgnoreList = null;
+            this.cnameIgnore1stParty = true;
+            this.cnameIgnoreExceptions = true;
+            this.cnameIgnoreRootDocument = true;
+            this.cnameMaxTTL = 60;
+            this.cnameReplayFullURL = false;
+            this.cnameTimer = undefined;
+            this.canRevealCNAME = browser.dns instanceof Object;
+        }
+        setOptions(options) {
+            super.setOptions(options);
+            this.cnameIgnoreList = this.regexFromStrList(options.cnameIgnoreList);
+            this.cnameIgnore1stParty = options.cnameIgnore1stParty !== false;
+            this.cnameIgnoreExceptions = options.cnameIgnoreExceptions !== false;
+            this.cnameIgnoreRootDocument = options.cnameIgnoreRootDocument !== false;
+            this.cnameMaxTTL = options.cnameMaxTTL || 120;
+            this.cnameReplayFullURL = options.cnameReplayFullURL === true;
+            this.cnames.clear(); this.cnames.set('', '');
+        }
+        normalizeDetails(details) {
             if ( mustPunycode && !reAsciiHostname.test(details.url) ) {
                 parsedURL.href = details.url;
                 details.url = details.url.replace(
@@ -79,14 +91,6 @@
 
             const type = details.type;
 
-        // https://github.com/gorhill/uBlock/issues/1493
-        //   Chromium 49+/WebExtensions support a new request type: `ping`,
-        //   which is fired as a result of using `navigator.sendBeacon`.
-        if ( type === 'ping' ) {
-            details.type = 'beacon';
-            return;
-        }
-
             if ( type === 'imageset' ) {
                 details.type = 'image';
                 return;
@@ -105,80 +109,154 @@
                     }
                 }
             }
-    };
-
-    vAPI.net.denormalizeFilters = function(filters) {
-        const urls = filters.urls || [ '<all_urls>' ];
-        let types = filters.types;
-        if ( Array.isArray(types) ) {
-            types = denormalizeTypes(types);
         }
+        denormalizeTypes(types) {
+            if ( types.length === 0 ) {
+                return Array.from(this.validTypes);
+            }
+            const out = new Set();
+            for ( const type of types ) {
+                if ( this.validTypes.has(type) ) {
+                    out.add(type);
+                }
+                if ( type === 'image' && this.validTypes.has('imageset') ) {
+                    out.add('imageset');
+                }
+                if ( type === 'sub_frame' ) {
+                    out.add('object');
+                }
+            }
+            return Array.from(out);
+        }
+        processCanonicalName(hn, cn, details) {
+            const hnBeg = details.url.indexOf(hn);
+            if ( hnBeg === -1 ) { return; }
+            const oldURL = details.url;
+            let newURL = oldURL.slice(0, hnBeg) + cn;
+            const hnEnd = hnBeg + hn.length;
+            if ( this.cnameReplayFullURL ) {
+                newURL += oldURL.slice(hnEnd);
+            } else {
+                const pathBeg = oldURL.indexOf('/', hnEnd);
+                if ( pathBeg !== -1 ) {
+                    newURL += oldURL.slice(hnEnd, pathBeg + 1);
+                }
+            }
+            details.url = newURL;
+            details.aliasURL = oldURL;
+            return super.onBeforeSuspendableRequest(details);
+        }
+        recordCanonicalName(hn, record) {
+            let cname =
+                typeof record.canonicalName === 'string' &&
+                record.canonicalName !== hn
+                    ? record.canonicalName
+                    : '';
+            if (
+                cname !== '' &&
+                this.cnameIgnore1stParty &&
+                vAPI.domainFromHostname(cname) === vAPI.domainFromHostname(hn)
+            ) {
+                cname = '';
+            }
+            if (
+                cname !== '' &&
+                this.cnameIgnoreList !== null &&
+                this.cnameIgnoreList.test(cname)
+            ) {
+                cname = '';
+            }
+            this.cnames.set(hn, cname);
+            if ( this.cnameTimer === undefined ) {
+                this.cnameTimer = self.setTimeout(
+                    ( ) => {
+                        this.cnameTimer = undefined;
+                        this.cnames.clear(); this.cnames.set('', '');
+                    },
+                    this.cnameMaxTTL * 60000
+                );
+            }
+            return cname;
+        }
+        regexFromStrList(list) {
             if (
-            (vAPI.net.validTypes.has('websocket')) &&
-            (types === undefined || types.indexOf('websocket') !== -1) &&
-            (urls.indexOf('<all_urls>') === -1)
+                typeof list !== 'string' ||
+                list.length === 0 ||
+                list === 'unset' ||
+                browser.dns instanceof Object === false
             ) {
-            if ( urls.indexOf('ws://*/*') === -1 ) {
-                urls.push('ws://*/*');
+                return null;
             }
-            if ( urls.indexOf('wss://*/*') === -1 ) {
-                urls.push('wss://*/*');
+            if ( list === '*' ) {
+                return /^./;
             }
+            return new RegExp(
+                '(?:^|\.)(?:' +
+                list.trim()
+                    .split(/\s+/)
+                    .map(a => a.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'))
+                    .join('|') +
+                ')$'
+            );
         }
-        return { types, urls };
-    };
-})();
-
-/******************************************************************************/
-
-// Related issues:
-// - https://github.com/gorhill/uBlock/issues/1327
-// - https://github.com/uBlockOrigin/uBlock-issues/issues/128
-// - https://bugzilla.mozilla.org/show_bug.cgi?id=1503721
-
-vAPI.net.onBeforeReady = (function() {
-    let pendings;
-
-    const handler = function(details) {
-        if ( pendings === undefined ) { return; }
-        if ( details.tabId < 0 ) { return; }
-
-        //console.log(`Deferring tab ${details.tabId}: ${details.type} ${details.url}`);
-
+        onBeforeSuspendableRequest(details) {
+            const r = super.onBeforeSuspendableRequest(details);
+            if ( this.canRevealCNAME === false ) { return r; }
+            if ( r !== undefined ) {
+                if ( r.cancel === false ) { return; }
+                if (
+                    r.cancel === true ||
+                    r.redirectUrl !== undefined ||
+                    this.cnameIgnoreExceptions
+                ) {
+                    return r;
+                }
+            }
+            if (
+                details.type === 'main_frame' &&
+                this.cnameIgnoreRootDocument
+            ) {
+                return;
+            }
+            const hn = vAPI.hostnameFromNetworkURL(details.url);
+            const cname = this.cnames.get(hn);
+            if ( cname === '' ) { return; }
+            if ( cname !== undefined ) {
+                return this.processCanonicalName(hn, cname, details);
+            }
+            return browser.dns.resolve(hn, [ 'canonical_name' ]).then(
+                rec => {
+                    const cname = this.recordCanonicalName(hn, rec);
+                    if ( cname === '' ) { return; }
+                    return this.processCanonicalName(hn, cname, details);
+                },
+                ( ) => {
+                    this.cnames.set(hn, '');
+                }
+            );
+        }
+        suspendOneRequest(details) {
             const pending = {
                 details: Object.assign({}, details),
                 resolve: undefined,
                 promise: undefined
             };
-
-        pending.promise = new Promise(function(resolve) {
+            pending.promise = new Promise(resolve => {
                 pending.resolve = resolve;
             });
-
-        pendings.push(pending);
-
+            this.pendingRequests.push(pending);
             return pending.promise;
-    };
-
-    return {
-        start: function() {
-            pendings = [];
-            browser.webRequest.onBeforeRequest.addListener(
-                handler,
-                { urls: [ 'http://*/*', 'https://*/*' ] },
-                [ 'blocking' ]
-            );
-        },
-        stop: function(resolver) {
-            if ( pendings === undefined ) { return; }
-            for ( const pending of pendings ) {
-                const details = pending.details;
-                vAPI.net.normalizeDetails(details);
-                //console.log(`Processing tab ${details.tabId}: ${details.type} ${details.url}`);
-                pending.resolve(resolver(details));
-            }
-            pendings = undefined;
-        },
+        }
+        unsuspendAllRequests() {
+            const pendingRequests = this.pendingRequests;
+            this.pendingRequests = [];
+            for ( const entry of pendingRequests ) {
+                entry.resolve(this.onBeforeSuspendableRequest(entry.details));
+            }
+        }
+        canSuspend() {
+            return true;
+        }
     };
 })();
 

platform/firefox/webext.js

@@ -0,0 +1,24 @@
+/*******************************************************************************
+
+    uBlock Origin - a browser extension to block requests.
+    Copyright (C) 2019-present Raymond Hill
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see {http://www.gnu.org/licenses/}.
+
+    Home: https://github.com/gorhill/uBlock
+*/
+
+'use strict';
+
+const webext = browser; // jshint ignore:line

src/_locales/en/messages.json

@@ -73,8 +73,8 @@
         "message": "script",
         "description": "HAS TO FIT IN MATRIX HEADER!"
     },
-    "xhrPrettyName": {
-        "message": "XHR",
+    "fetchPrettyName": {
+        "message": "fetch",
         "description": "HAS TO FIT IN MATRIX HEADER!"
     },
     "framePrettyName": {
@@ -139,6 +139,10 @@
         "message": "Spoof <code><noscript></code> tags",
         "description": "A menu entry in the matrix popup"
     },
+    "matrixSwitchRevealCname" : {
+        "message": "Reveal canonical names",
+        "description": "A menu entry in the matrix popup"
+    },
     "matrixRevertAllEntry" : {
         "message": "Revert all temporary changes",
         "description": "A menu entry in the matrix popup"
@@ -284,8 +288,154 @@
         "message": "Refresh",
         "description": ""
     },
-
-
+    "logAll":{
+        "message":"All",
+        "description":"Appears in the logger's tab selector"
+    },
+    "logBehindTheScene":{
+        "message":"Tabless",
+        "description":"Pretty name for behind-the-scene network requests"
+    },
+    "loggerCurrentTab":{
+        "message":"Current tab",
+        "description":"Appears in the logger's tab selector"
+    },
+    "loggerReloadTip":{
+        "message":"Reload the tab content",
+        "description":"Tooltip for the reload button in the logger page"
+    },
+    "loggerFilterInputPlaceholder" : {
+        "message": "filter expression(s)",
+        "description": "Appears in the input filed where filter expressions are entered"
+    },
+    "loggerEntryCookieDeleted" : {
+        "message": "cookie deleted: {{value}}",
+        "description": "An entry for when a cookie is deleted"
+    },
+    "loggerEntryDeleteCookieError" : {
+        "message": "failed to delete cookie: {{value}}",
+        "description": "An entry for when the browser cache is cleared"
+    },
+    "loggerEntryBrowserCacheCleared" : {
+        "message": "browser cache cleared",
+        "description": "An entry for when a cookie can't be deleted"
+    },
+    "loggerEntryAssetUpdated" : {
+        "message": "asset updated: {{value}}",
+        "description": "An entry for when an asset was updated"
+    },
+    "loggerRowFiltererButtonTip":{
+        "message":"Toggle logger filtering",
+        "description":"Tooltip for the row filterer button in the logger page"
+    },
+    "logFilterPrompt":{
+        "message":"filter logger content",
+        "description": "Placeholder string for logger output filtering input field"
+    },
+    "loggerPopupPanelTip":{
+        "message":"Toggle the popup panel",
+        "description":"Tooltip for the popup panel button in the logger page"
+    },
+    "loggerInfoTip":{
+        "message":"uBlock Origin wiki: The logger",
+        "description":"Tooltip for the top-right info label in the logger page"
+    },
+    "loggerClearTip":{
+        "message":"Clear logger",
+        "description":"Tooltip for the eraser in the logger page; used to blank the content of the logger"
+    },
+    "loggerPauseTip":{
+        "message":"Pause logger (discard all incoming data)",
+        "description":"Tooltip for the pause button in the logger page"
+    },
+    "loggerUnpauseTip":{
+        "message":"Unpause logger",
+        "description":"Tooltip for the play button in the logger page"
+    },
+    "loggerRowFiltererBuiltinTip":{
+        "message":"Logger filtering options",
+        "description":"Tooltip for the button to bring up logger output filtering options"
+    },
+    "loggerRowFiltererBuiltinNot":{
+        "message":"Not",
+        "description":"A keyword in the built-in row filtering expression"
+    },
+    "loggerRowFiltererBuiltinBlocked":{
+        "message":"blocked",
+        "description":"A keyword in the built-in row filtering expression"
+    },
+    "loggerRowFiltererBuiltinInfo":{
+        "message":"info",
+        "description":"A keyword in the built-in row filtering expression"
+    },
+    "loggerRowFiltererBuiltin1p":{
+        "message":"1st-party",
+        "description":"A keyword in the built-in row filtering expression"
+    },
+    "loggerRowFiltererBuiltin3p":{
+        "message":"3rd-party",
+        "description":"A keyword in the built-in row filtering expression"
+    },
+    "loggerEntryDetailsHeader":{
+        "message":"Details",
+        "description":"Small header to identify the 'Details' pane for a specific logger entry"
+    },
+    "loggerEntryDetailsContext":{
+        "message":"Context",
+        "description":"Label to identify a context field (typically a hostname)"
+    },
+    "loggerEntryDetailsPartyness":{
+        "message":"Partyness",
+        "description":"Label to identify a field providing partyness information"
+    },
+    "loggerEntryDetailsType":{
+        "message":"Type",
+        "description":"Label to identify the type of an entry"
+    },
+    "loggerEntryDetailsURL":{
+        "message":"URL",
+        "description":"Label to identify the URL of an entry"
+    },
+    "loggerEntryRuleHeader":{
+        "message":"Rule",
+        "description":"Small header to identify the 'Rule' pane for a specific logger entry"
+    },
+    "loggerSettingDiscardPrompt":{
+        "message":"Logger entries which do not fulfill all three conditions below will be automatically discarded:",
+        "description":"Logger setting: A sentence to describe the purpose of the settings below"
+    },
+    "loggerSettingPerEntryMaxAge":{
+        "message":"Preserve entries from the last {{input}} minutes",
+        "description":"A logger setting"
+    },
+    "loggerSettingPerTabMaxLoads":{
+        "message":"Preserve at most {{input}} page loads per tab",
+        "description":"A logger setting"
+    },
+    "loggerSettingPerTabMaxEntries":{
+        "message":"Preserve at most {{input}} entries per tab",
+        "description":"A logger setting"
+    },
+    "loggerSettingPerEntryLineCount":{
+        "message":"Use {{input}} lines per entry in vertically expanded mode",
+        "description":"A logger setting"
+    },
+    "loggerExportFormatList":{
+        "message":"List",
+        "description":"Label for radio-button to pick export format"
+    },
+    "loggerExportFormatTable":{
+        "message":"Table",
+        "description":"Label for radio-button to pick export format"
+    },
+    "loggerExportEncodePlain":{
+        "message":"Plain",
+        "description":"Label for radio-button to pick export text format"
+    },
+    "loggerExportEncodeMarkdown":{
+        "message":"Markdown",
+        "description":"Label for radio-button to pick export text format"
+    },
     "settingsPageTitle" : {
         "message": "uMatrix &ndash; Settings",
         "description": ""
@@ -622,31 +772,6 @@
         "description": "Message asking user to confirm reset"
     },
 
-    "loggerFilterInputPlaceholder" : {
-        "message": "filter expression(s)",
-        "description": "Appears in the input filed where filter expressions are entered"
-    },
-    "loggerMaxEntriesTip" : {
-        "message": "Maximum number of entries",
-        "description": "Appears as a tooltip when hovering the input field"
-    },
-    "loggerEntryCookieDeleted" : {
-        "message": "cookie deleted: {{value}}",
-        "description": "An entry for when a cookie is deleted"
-    },
-    "loggerEntryDeleteCookieError" : {
-        "message": "failed to delete cookie: {{value}}",
-        "description": "An entry for when the browser cache is cleared"
-    },
-    "loggerEntryBrowserCacheCleared" : {
-        "message": "browser cache cleared",
-        "description": "An entry for when a cookie can't be deleted"
-    },
-    "loggerEntryAssetUpdated" : {
-        "message": "asset updated: {{value}}",
-        "description": "An entry for when an asset was updated"
-    },
-
     "mainBlockedPrompt1": {
         "message": "uMatrix has prevented the following page from loading:",
         "description": "English: uMatrix has prevented the following page from loading:"
@@ -752,5 +877,9 @@
     "genericApplyChanges": {
         "message": "Apply changes",
         "description": "for generic 'Apply changes' buttons"
+    },
+    "genericCopyToClipboard":{
+        "message":"Copy to clipboard",
+        "description":"Label for buttons used to copy something to the clipboard"
     }
 }

src/about.html

@@ -6,6 +6,10 @@
 <link rel="stylesheet" type="text/css" href="css/common.css">
 <link rel="stylesheet" type="text/css" href="css/dashboard-common.css">
 <style>
+div.body > ul {
+    padding-left: 0;
+    padding-right: 0;
+}
 ul {
     list-style-type: none;
 }
@@ -17,6 +21,8 @@ ul {
 
 <h3>uMatrix <span id="aboutVersion"></span></h3>
 <ul>
+    <li>Copyright (c) Raymond Hill 2013-present<br>
+    <li>&nbsp;
     <li><span id="aboutStorageUsed"></span><br>
     <li>&nbsp;
     <li><span data-i18n="aboutChangelog"></span><br>
@@ -55,6 +61,7 @@ ul {
     <span data-i18n="aboutResetConfirm"></span>
 </div>
 
+<script src="js/vapi.js"></script>
 <script src="js/vapi-common.js"></script>
 <script src="js/vapi-client.js"></script>
 <script src="js/udom.js"></script>

src/asset-viewer.html

@@ -4,18 +4,45 @@
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>uMatrix — Asset viewer</title>
+<link rel="stylesheet" href="lib/codemirror/lib/codemirror.css">
+<link rel="stylesheet" href="lib/codemirror/addon/search/matchesonscrollbar.css">
+<link rel="stylesheet" href="css/fa-icons.css">
+<link rel="stylesheet" href="css/codemirror.css">
 <style>
+body {
+    border: 0;
+    margin: 0;
+    padding: 0;
+    }
 #content {
-    font: 12px monospace;
-    white-space: pre;
+    height: 100vh;
+    width: 100vw;
+    }
+
+/* https://github.com/uBlockOrigin/uBlock-issues/issues/292 */
+.CodeMirror-wrap pre {
+    word-break: break-all;
     }
 </style>
 </head>
 <body>
-<div id="content"></div>
+<div id="content" class="codeMirrorContainer"></div>
+
+<script src="lib/codemirror/lib/codemirror.js"></script>
+<script src="lib/codemirror/addon/display/panel.js"></script>
+<script src="lib/codemirror/addon/scroll/annotatescrollbar.js"></script>
+<script src="lib/codemirror/addon/search/matchesonscrollbar.js"></script>
+<script src="lib/codemirror/addon/search/searchcursor.js"></script>
+<script src="lib/codemirror/addon/selection/active-line.js"></script>
+
+<script src="js/codemirror/search.js"></script>
+
+<script src="js/fa-icons.js"></script>
+<script src="js/vapi.js"></script>
 <script src="js/vapi-common.js"></script>
 <script src="js/vapi-client.js"></script>
 <script src="js/udom.js"></script>
+<script src="js/dashboard-common.js"></script>
 <script src="js/asset-viewer.js"></script>
 </body>
 </html>

src/background.html

@@ -5,33 +5,34 @@
 <title>uMatrix</title>
 </head>
 <body>
+<script src="js/console.js"></script>
+<script src="lib/lz4/lz4-block-codec-any.js"></script>
 <script src="lib/punycode.js"></script>
-<script src="lib/publicsuffixlist.js"></script>
+<script src="lib/publicsuffixlist/publicsuffixlist.js"></script>
+<script src="js/webext.js"></script>
+<script src="js/vapi.js"></script>
 <script src="js/vapi-common.js"></script>
 <script src="js/vapi-background.js"></script>
-
-<!-- Forks can pick the chromium, firefox, or their own implementation -->
 <script src="js/vapi-webrequest.js"></script>
-
-<!-- Optional -->
-<script src="js/vapi-cachestorage.js"></script>
-
 <script src="js/background.js"></script>
+<script src="js/traffic.js"></script>
+<script src="js/hntrie.js"></script>
+<script src="js/utils.js"></script>
+<script src="js/uritools.js"></script>
+<script src="js/lz4.js"></script>
 <script src="js/usersettings.js"></script>
-<script src="js/liquid-dict.js"></script>
 <script src="js/matrix.js"></script>
 <script src="js/recipe-manager.js"></script>
-<script src="js/utils.js"></script>
+<script src="js/cachestorage.js"></script>
 <script src="js/assets.js"></script>
+<script src="js/filtering-context.js"></script>
 <script src="js/httpsb.js"></script>
-<script src="js/uritools.js"></script>
 <script src="js/cookies.js"></script>
 <script src="js/logger.js"></script>
 <script src="js/messaging.js"></script>
 <script src="js/storage.js"></script>
 <script src="js/pagestats.js"></script>
 <script src="js/tab.js"></script>
-<script src="js/traffic.js"></script>
 <script src="js/browsercache.js"></script>
 <script src="js/start.js"></script>
 </body>

src/css/codemirror.css

@@ -1,6 +1,5 @@
 .codeMirrorContainer {
     font-size: 12px;
-    line-height: 1.25;
     overflow: hidden;
     position: relative;
     }
@@ -18,6 +17,73 @@
     height: 100%;
     }
 
+.cm-s-default .cm-comment { color: #777; }
+.cm-directive { color: #333; font-weight: bold; }
+.cm-staticext { color: #008; }
+.cm-staticnetBlock { color: #800; }
+.cm-staticnetAllow { color: #004f00; }
+.cm-staticOpt { background-color: #ddd; font-weight: bold; }
+
+.cm-search-widget {
+    align-items: center;
+    background-color: #eee;
+    cursor: default;
+    direction: ltr;
+    display: flex;
+    flex-shrink: 0;
+    font-size: 110%;
+    justify-content: center;
+    padding: 4px 8px;
+    /* position: absolute; */
+    right: 2em;
+    top: 0;
+    user-select: none;
+      -moz-user-select: none;
+      -webkit-user-select: none;
+    z-index: 1000;
+    }
+.cm-search-widget .fa-icon {
+    fill: #888;
+    font-size: 140%;
+    }
+.cm-search-widget .fa-icon:not(.fa-icon-ro):hover {
+    fill: #000;
+    }
+.cm-search-widget-input {
+    border: 1px solid gray;
+    border-radius: 3px;
+    display: inline-flex;
+    min-width: 16em;
+    }
+.cm-search-widget-input > input {
+    border: 0;
+    flex-grow: 1;
+    }
+.cm-search-widget-input > .cm-search-widget-count {
+    align-items: center;
+    color: #888;
+    display: none;
+    flex-grow: 0;
+    font-size: 80%;
+    padding: 0 0.4em;
+    pointer-events: none;
+    }
+.cm-search-widget[data-query] .cm-search-widget-count {
+    display: inline-flex;
+    }
+.cm-search-widget .cm-search-widget-button:hover {
+    color: #000;
+    }
+.cm-search-widget .sourceURL {
+    padding-left: 0.5em;
+    padding-right: 0.5em;
+    position: absolute;
+    left: 0;
+    }
+.cm-search-widget .sourceURL[href=""] {
+    display: none;
+    }
+
 .CodeMirror-merge-l-deleted {
     background-image: none;
     font-weight: bold;

src/css/common.css

@@ -12,7 +12,7 @@
 }
 
 body {
-    font-size: 14px;
+    font: 14px sans-serif;
     }
 body[dir="ltr"] {
     direction: ltr;
@@ -111,3 +111,35 @@ button.custom[disabled] {
 code {
     font-size: 90%;
     }
+
+.px-icon {
+    align-items: center;
+    background-color: transparent;
+    border: 0;
+    display: inline-flex;
+    filter: grayscale(100%);
+    justify-content: center;
+    margin: 0;
+    padding: 0.1em;
+    position: relative;
+    }
+.px-icon > * {
+    pointer-events: none;
+    }
+.px-icon.disabled,
+.disabled > .px-icon,
+.px-icon[disabled],
+[disabled] > .px-icon {
+    color: #000;
+    fill: #000;
+    opacity: 0.25;
+    stroke: #888;
+    pointer-events: none;
+    }
+.px-icon > img {
+    height: 1em;
+    width: 1em;
+    }
+.px-icon.active {
+    filter: none;
+    }

src/css/dashboard.css

@@ -23,9 +23,13 @@ body {
     white-space: nowrap;
     background-color: white;
     }
-#dashboard-nav-widgets span {
+#dashboard-nav-widgets > span {
     padding: 0 0.5em;
     font-size: larger;
+    vertical-align: bottom;
+    }
+#dashboard-nav-widgets > span > img {
+    width: 1em;
     }
 .tabButton {
     margin: 0;

src/css/logger-ui.css

@@ -1,425 +1,621 @@
 body {
     background-color: white;
     border: 0;
-    box-sizing: border-box;
-    -moz-box-sizing: border-box;
     color: black;
+    display: flex;
+    flex-direction: column;
+    height: 100vh;
     margin: 0;
-    overflow-x: hidden;
+    overflow: hidden;
     padding: 0;
-    width: 100%;
-    }
-.fa-icon {
-    cursor: pointer;
-    font-size: 150%;
-    padding: 0.4em 0.6em;
+    width: 100vw;
     }
-.fa-icon:hover {
-    background-color: #eee;
+textarea {
+    box-sizing: border-box;
+    direction: ltr;
+    resize: none;
+    width: 100%;
     }
-#toolbar {
+.permatoolbar {
     background-color: white;
     border: 0;
-    border-bottom: 1px solid #ccc;
     box-sizing: border-box;
-    -moz-box-sizing: border-box;
-    left: 0;
+    display: flex;
+    flex-shrink: 0;
+    font-size: 120%;
+    justify-content: space-between;
     margin: 0;
-    padding: 0.5em 1em;
-    position: fixed;
-    top: 0;
-    width: 100%;
-    z-index: 10;
+    padding: 0.25em;
     }
-#toolbar > div {
+.permatoolbar > div {
     display: flex;
-    padding: 0.5em;
-    white-space: nowrap;
+    }
+.permatoolbar .button {
+    cursor: pointer;
+    font-size: 150%;
+    padding: 0.25em;
+    }
+.permatoolbar .button.active {
+    fill: #5F9EA0;
+    }
+.permatoolbar .button:hover {
+    background-color: #eee;
     }
 #pageSelector {
+    padding: 0.25em 0;
     width: 28em;
-    margin-right: 0.5em;
-    padding: 0.2em 0;
+    }
+body[dir="ltr"] #pageSelector {
+    margin-right: 1em;
+    }
+body[dir="rtl"] #pageSelector {
+    margin-left: 1em;
     }
 
-@keyframes popupPanelShow {
-    from { opacity: 0; }
-    to { opacity: 1; }
+#showpopup {
+    display: inline-flex;
+    align-items: center;
     }
-#popupPanelContainer {
-    background: white;
-    border: 1px solid gray;
-    display: none;
-    overflow: hidden;
-    position: fixed;
-    right: 0;
-    z-index: 2000;
+#info {
+    fill: #ccc;
     }
-body.popupPanelOn #popupPanelContainer {
-    animation-duration: 0.25s;
-    animation-name: popupPanelShow;
-    display: block;
+#info:hover {
+    fill: #000;
     }
-#popupPanelContainer.hide {
-    width: 6em !important;
+
+/*
+    https://github.com/gorhill/uBlock/issues/3293
+    => https://devhints.io/css-system-font-stack
+*/
+#inspectors {
+    flex-grow: 1;
+    font-family: "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
     }
-#popupPanelContainer > iframe {
-    border: 0;
-    padding: 0;
-    margin: 0;
-    overflow: hidden;
-    width: 100%;
+.inspector {
+    border-top: 1px solid #ccc;
+    display: flex;
+    flex-direction: column;
     }
-#popupPanelContainer.hide > iframe {
+.vscrollable {
+    direction: ltr;
+    flex-grow: 1;
+    font-size: small;
+    overflow-x: hidden;
+    overflow-y: auto;
+}
+
+.inspector:not(.vExpanded) .vCompactToggler.button {
+    transform: scaleY(-1)
+    }
+.hCompact .hCompactToggler.button {
+    transform: scaleX(-1)
+    }
+
+#inspectors.dom #netInspector {
     display: none;
     }
 
-#popupPanelButton use {
-    transform: scale(1, 0.4);
+#netInspector #pause > span:last-of-type {
+    display: none;
 }
-body.popupPanelOn #popupPanelButton use {
-    transform: scale(1, 1);
+#netInspector.paused #pause > span:first-of-type {
+    display: none;
 }
-body.compactView #compactViewToggler use {
-    transform: scale(1, -1);
-    transform-origin: center;
+#netInspector.paused #pause > span:last-of-type {
+    display: inline-flex;
+    fill: #5F9EA0;
 }
-#filterButton {
+#netInspector #filterExprGroup {
+    display: flex;
+    margin: 0 1em;
+    position: relative;
+    }
+#netInspector #filterButton {
     opacity: 0.25;
     }
-body.f #filterButton {
+#netInspector.f #filterButton {
     opacity: 1;
     }
-#filterInput.bad {
-    background-color: #fee;
+#netInspector #filterInput {
+    border: 1px solid gray;
+    display: inline-flex;
+    }
+#netInspector #filterInput > input {
+    border: 0;
+    min-width: 16em;
     }
-#maxEntries {
-    margin: 0 2em;
+#netInspector #filterExprButton {
+    transform: scaleY(-1);
     }
-input:focus {
-    background-color: #ffe;
+#netInspector #filterExprButton:hover {
+    background-color: transparent;
     }
-#content {
-    font-family: "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
-    font-size: 13px;
-    width: 100%;
+#netInspector #filterExprButton.expanded {
+    transform: scaleY(1);
+    }
+#netInspector #filterExprPicker {
+    background-color: white;
+    border: 1px solid gray;
+    display: none;
+    position: absolute;
+    flex-direction: column;
+    font-size: small;
+    top: 100%;
+    z-index: 100;
+    }
+body[dir="ltr"] #netInspector #filterExprPicker {
+    right: 0;
+    }
+body[dir="rtl"] #netInspector #filterExprPicker {
+    left: 0;
     }
 
-#content table {
-    border: 0;
-    border-collapse: collapse;
-    direction: ltr;
-    table-layout: fixed;
-    width: 100%;
+#netInspector #filterExprGroup:hover #filterExprButton.expanded ~ #filterExprPicker {
+    display: flex;
+    }
+#netInspector #filterExprPicker > div {
+    border: 1px dotted #ddd;
+    border-left: 0;
+    border-right: 0;
+    display: flex;
+    padding: 0.5em;
+    }
+#netInspector #filterExprPicker > div:first-of-type {
+    border-top: 0;
     }
-#content table > colgroup > col:nth-of-type(1) {
-    width: 4.6em;
+#netInspector #filterExprPicker > div:last-of-type {
+    border-bottom: 0;
     }
-#content table > colgroup > col:nth-of-type(2) {
-    width: 25%;
+#netInspector #filterExprPicker div {
+    display: flex;
     }
-#content table > colgroup > col:nth-of-type(3) {
-    width: 2.2em;
+#netInspector #filterExprPicker span[data-filtex] {
+    align-items: center;
+    border: 1px solid transparent;
+    cursor: pointer;
+    display: inline-flex;
+    margin: 0 0.5em 0 0;
+    padding: 0.5em;
+    white-space: nowrap;
     }
-#content table > colgroup > col:nth-of-type(4) {
-    width: 5.4em;
+#netInspector #filterExprPicker span[data-filtex]:last-of-type {
+    margin: 0;
     }
-#content table > colgroup > col:nth-of-type(5) {
-    width: calc(100% - 4.6em - 25% - 2.2em - 5.4em - 1.8em);
+#netInspector #filterExprPicker span[data-filtex]:hover {
+    background-color: aliceblue;
+    border: 1px solid lightblue;
     }
-#content table > colgroup > col:nth-of-type(6) {
-    width: 1.8em;
+#netInspector #filterExprPicker span.on[data-filtex] {
+    background-color: lightblue;
+    border: 1px solid lightblue;
     }
-#content table tr {
-    background-color: #fafafa;
+
+#netInspector .vscrollable {
+    overflow: hidden;
     }
-body.f table tr.f {
+#vwRenderer {
+    box-sizing: border-box;
+    height: 100%;
+    overflow: hidden;
+    position: relative;
+    width: 100%;
+    }
+#vwRenderer #vwScroller {
+    height: 100%;
+    overflow-x: hidden;
+    overflow-y: auto;
+    position: absolute;
+    width: 100%;
+    }
+#vwRenderer #vwScroller #vwVirtualContent {
+    overflow: hidden;
+    }
+#vwRenderer #vwContent {
+    left: 0;
+    overflow: hidden;
+    position: absolute;
+    width: 100%;
+    }
+#vwRenderer .logEntry {
+    display: block;
+    left: 0;
+    overflow: hidden;
+    position: absolute;
+    width: 100%;
+    }
+#vwRenderer .logEntry:empty {
     display: none;
     }
-#content table tr:nth-of-type(2n+1) {
-    background-color: #eee;
+#vwRenderer .logEntry > div {
+    height: 100%;
+    white-space: nowrap;
     }
-
-#content table tr.cat_info {
-    color: #00f;
+#vwRenderer .logEntry > div[data-status="--"] {
+    background-color: rgba(192, 0, 0, 0.1);
+    }
+body.colorBlind #vwRenderer .logEntry > div[data-status="--"] {
+    background-color: rgba(0, 19, 110, 0.1);
+    }
+#vwRenderer .logEntry > div[data-status="3"] {
+    background-color: rgba(108, 108, 108, 0.1);
     }
-#content table tr.blocked {
-    color: #f00;
+body.colorBlind #vwRenderer .logEntry > div[data-status="3"] {
+    background-color: rgba(96, 96, 96, 0.1);
     }
-#content table tr.doc {
+#vwRenderer .logEntry > div[data-status="++"] {
+    background-color: rgba(0, 160, 0, 0.1);
+    }
+body.colorBlind #vwRenderer .logEntry > div[data-status="++"] {
+    background-color: rgba(255, 194, 57, 0.1)
+    }
+#vwRenderer .logEntry > div[data-tabid="-1"] {
+    text-shadow: 0 0.2em 0.4em #aaa;
+    }
+#vwRenderer .logEntry > div[data-aliasid] {
+    color: mediumblue;
+    }
+#vwRenderer .logEntry > div[data-type="tabLoad"] {
     background-color: #666;
     color: white;
-    text-align: center;
+    }
+#vwRenderer .logEntry > div[data-type="error"] {
+    color: #800;
+    }
+#vwRenderer .logEntry > div[data-type="info"] {
+    color: #008;
+    }
+#vwRenderer .logEntry > div.voided {
+    opacity: 0.3;
+    }
+#vwRenderer .logEntry > div.voided:hover {
+    opacity: 0.7;
     }
 
-body #content td {
+#vwRenderer .logEntry > div > span {
     border: 1px solid #ccc;
-    min-width: 0.5em;
-    padding: 3px;
-    vertical-align: top;
-    white-space: normal;
+    border-top: 0;
+    border-right: 0;
+    box-sizing: border-box;
+    display: inline-block;
+    height: 100%;
+    overflow: hidden;
+    padding: 0.2em;
+    text-align: left;
+    vertical-align: middle;
+    white-space: nowrap;
     word-break: break-all;
-    word-wrap: break-word;
     }
-#content table tr td:first-of-type {
-    border-left: none;
+#vwRenderer .logEntry > div.canDetails:hover > span {
+    background-color: rgba(0,0,0,0.04);
     }
-#content table tr td:last-of-type {
-    border-right: none;
+body[dir="ltr"] #vwRenderer .logEntry > div > span:first-child {
+    border-left: 0;
     }
-body.compactView #content tr:not(.vExpanded) td {
-    overflow: hidden;
-    text-overflow: ellipsis;
-    white-space: nowrap;
+body[dir="rtl"] #vwRenderer .logEntry > div > span:first-child {
+    border-right: 0;
     }
-
-#content table tr td:nth-of-type(1) {
-    cursor: default;
-    text-align: right;
-    white-space: nowrap;
+#vwRenderer .logEntry > div > span:nth-of-type(1) {
+    text-align: center;
     }
-#content table tr td:nth-of-type(2):not([colspan]) {
-    direction: rtl;
+#vwRenderer .logEntry > div > span:nth-of-type(2) {
     text-align: right;
+    text-overflow: ellipsis;
+    }
+.vExpanded #vwRenderer .logEntry > div > span:nth-of-type(2) {
+    overflow-y: auto;
+    white-space: pre-line;
+    }
+#netInspector.vExpanded #vwRenderer .logEntry > div > span:nth-of-type(2) {
+    text-align: left;
     unicode-bidi: plaintext;
     }
-#content table tr[data-tabid="-1"] td:nth-of-type(2):not([colspan]) {
-    position: relative;
+#vwRenderer .logEntry > div:not(.messageRealm) > span:nth-of-type(2) {
+    direction: rtl;
+    }
+#vwRenderer .logEntry > div.messageRealm > span:nth-of-type(2) {
+    color: blue;
+    text-align: left;
+    }
+#vwRenderer .logEntry > div.messageRealm[data-type="tabLoad"] > span:nth-of-type(2) {
+    color: white;
+    text-align: center;
+    }
+#vwRenderer .logEntry > div.messageRealm > span:nth-of-type(2) ~ span {
+    display: none;
+    }
+#vwRenderer .logEntry > div > span:nth-of-type(3) {
+    text-align: center;
     }
-#content table tr td:nth-of-type(3) {
+#vwRenderer #vwContent .logEntry > div > span:nth-of-type(4) {
+    color: #888;
     position: relative;
+    text-overflow: ellipsis;
     }
-/* visual for tabless network requests */
-#content table tr[data-tabid="-1"] td:nth-of-type(3)::before {
-    border: 5px solid #bbb;
-    border-bottom: 0;
-    border-top: 0;
-    bottom: 0;
-    content: '\00a0';
-    left: 0;
+#vwRenderer #vwContent .logEntry > div[data-header] > span:nth-of-type(4) {
+    color: black;
+    }
+.vExpanded #vwRenderer #vwContent .logEntry > div > span:nth-of-type(4) {
+    overflow-y: auto;
+    text-overflow: clip;
+    white-space: pre-line;
+    }
+#vwRenderer .logEntry > div > span:nth-of-type(4) b {
+    color: black;
+    font-weight: normal;
+    }
+#vwRenderer .logEntry > div[data-aliasid] > span:nth-of-type(4) b {
+    color: mediumblue;
+    }
+#vwRenderer .logEntry > div > span:nth-of-type(4) a {
+    background-color: dimgray;
+    color: white;
+    display: none;
+    height: 100%;
+    padding: 0 0.25em;
+    opacity: 0.4;
     position: absolute;
     right: 0;
+    text-decoration: none;
     top: 0;
-    width: calc(100% - 10px);
     }
-#content table tr.tab:not(.canMtx) {
-    opacity: 0.3;
+#netInspector.vExpanded #vwRenderer .logEntry > div > span:nth-of-type(4) a {
+    bottom: 0px;
+    height: unset;
+    padding: 0.25em;
+    top: unset;
     }
-#content table tr.tab:not(.canMtx):hover {
-    opacity: 0.7;
+#vwRenderer .logEntry > div > span:nth-of-type(4) a::after {
+    content: '\2197';
     }
-#content table tr.cat_net td:nth-of-type(3) {
-    cursor: pointer;
+#vwRenderer .logEntry > div.networkRealm > span:nth-of-type(4):hover a {
+    align-items: center;
+    display: inline-flex;
+    }
+#vwRenderer .logEntry > div > span:nth-of-type(4) a:hover {
+    opacity: 1;
+    }
+#vwRenderer .logEntry > div > span:nth-of-type(5) {
+    text-align: right;
+    }
+/* visual for tabless network requests */
+#vwRenderer .logEntry > div > span:nth-of-type(5) {
+    }
+#vwRenderer .logEntry > div > span:nth-of-type(6) {
     font: 12px monospace;
     text-align: center;
-    white-space: nowrap;
     }
-#content table tr.cat_net td:nth-of-type(5) {
+#vwRenderer .logEntry > div.canDetails:hover > span:nth-of-type(6) {
+    background: rgba(0, 0, 255, 0.1);
+    cursor: zoom-in;
     }
-#content table tr.cat_net td:nth-of-type(5) > span > * {
-    opacity: 0.6;
+
+#vwRenderer #vwBottom {
+    background-color: #00F;
+    height: 0;
+    overflow: hidden;
+    width: 100%;
     }
-#content table tr.cat_net td:nth-of-type(5) > span > b:first-of-type {
-    opacity: 1;
+#vwRenderer #vwLineSizer {
+    left: 0;
+    pointer-events: none;
+    position: absolute;
+    top: 0;
+    visibility: hidden;
+    width: 100%;
+    }
+
+#popupContainer {
+    background: white;
+    border: 1px solid gray;
+    bottom: 0;
+    box-sizing: content-box;
+    display: none;
+    max-height: 75vh;
+    overflow: hidden;
+    position: fixed;
+    right: 0;
+    z-index: 200;
+    }
+#inspectors.popupOn #popupContainer {
+    display: block;
     }
 
-.modalDialog {
+#modalOverlay {
     align-items: center;
     background-color: rgba(0, 0, 0, 0.5);
-    display: flex;
-    height: 100vh;
+    border: 0;
+    bottom: 0;
+    display: none;
     justify-content: center;
     left: 0;
+    margin: 0;
     position: fixed;
+    right: 0;
     top: 0;
-    width: 100vw;
-    z-index: 5000;
+    z-index: 400;
     }
-.modalDialog > .dialog {
-    background-color: white;
-    font: 15px httpsb,sans-serif;
-    min-width: fit-content;
-    padding: 0.5em;
-    width: 90%;
-    }
-
-#ruleEditor section {
+#modalOverlay.on {
     display: flex;
     }
-.scopeWidget {
-    line-height: 2.5em;
-    margin-bottom: 0.5em;
+#modalOverlay > div {
+    position: relative;
     }
-#specificScope, .ruleCell:nth-of-type(1) {
-    flex-grow: 1;
+#modalOverlay > div > div:nth-of-type(1) {
+    background-color: white;
+    border: 0;
+    box-sizing: border-box;
+    padding: 1em;
+    max-height: 90vh;
+    overflow-y: auto;
+    width: 90vw;
+    }
+#modalOverlay > div > div:nth-of-type(2) {
+    stroke: #000;
+    stroke-width: 3px;
+    position: absolute;
+    width: 1.6em;
+    height: 1.6em;
+    bottom: calc(100% + 2px);
+    background-color: white;
     }
-#globalScope, .ruleCell:nth-of-type(2) {
-    width: 4em;
+body[dir="ltr"] #modalOverlay > div > div:nth-of-type(2) {
+    right: 0;
     }
-.ruleEditorToolbar {
-    display: flex;
-    flex-direction: column;
-    justify-content: space-around;
-    margin-left: 0.5em;
-    padding: 0.2em;
+body[dir="rtl"] #modalOverlay > div > div:nth-of-type(2) {
+    left: 0;
     }
-.ruleEditorToolbar .fa-icon {
-    padding: 0.4em;
+#modalOverlay > div > div:nth-of-type(2):hover {
+    background-color: #eee;
     }
-
-.fa-icon.scopeRel {
-    color: #24c;
-    fill: #24c;
+#modalOverlay > div > div:nth-of-type(2) > * {
+    pointer-events: none;
     }
-body[data-scope="*"] .fa-icon.scopeRel {
-    color: #000;
-    fill: #000;
+
+#netFilteringDialog {
+    font-size: 95%;
     }
-.ruleWidgets {
-    display: flex;
-    flex-direction: column;
-    flex-grow: 1;
+#netFilteringDialog a {
+    text-decoration: none;
     }
-.ruleRow {
-    display: flex;
-    line-height: 2em;
-    margin-top: 1px;
+#netFilteringDialog > .headers {
+    border-bottom: 1px solid #888;
+    line-height: 2;
+    position: relative;
     }
-.ruleCell {
+#netFilteringDialog > .headers > .header {
     background-color: #eee;
-    border: 1px dotted rgba(0,0,0,0.2);
+    border: 1px solid #aaa;
+    border-bottom: 1px solid #888;
+    border-top-left-radius: 4px;
+    border-top-right-radius: 4px;
+    color: #888;
     cursor: pointer;
     display: inline-block;
-    margin-left: 1px;
-    padding: 1px;
+    padding: 0 1em;
     position: relative;
-    }
-.ruleCell:hover {
-    border-style: solid;
-    }
-.ruleCell:nth-of-type(1) {
-    margin-left: 0;
-    text-align: right;
-    }
-.ruleCell:nth-of-type(2) {
     text-align: center;
+    top: 1px;
     }
-.ruleCell[data-tcolor="1"] {
-    border-color: #debaba;
-    color: black;
-    background-color: #f8d0d0;
-    }
-#ruleEditor.colorblind .ruleCell[data-tcolor="1"] {
-    border-color: rgba(0, 19, 110, 0.3);
+#netFilteringDialog[data-pane="details"] > .headers > [data-pane="details"],
+#netFilteringDialog[data-pane="rule"] > .headers > [data-pane="rule"] {
+    background-color: white;
+    border-color: #888;
+    border-bottom: 1px solid white;
     color: black;
-    background-color: rgba(0, 19, 110, 0.2);
     }
-.ruleCell[data-tcolor="2"] {
-    border-color: #bad6ba;
-    color: black;
-    background-color: #d0f0d0;
+#netFilteringDialog > div.panes {
+    height: 50vh;
+    overflow: hidden;
+    overflow-y: auto;
+    padding-top: 1em;
     }
-#ruleEditor.colorblind .ruleCell[data-tcolor="2"] {
-    border-color: rgba(255, 194, 57, 0.3);
-    color: black;
-    background-color: rgba(255, 194, 57, 0.2);
+#netFilteringDialog > div.panes > div {
+    display: none;
+    height: 100%;
     }
-.ruleCell[data-tcolor="129"] {
-    color: white;
-    background-color: #c00;
+#netFilteringDialog[data-pane="details"] > .panes > [data-pane="details"],
+#netFilteringDialog[data-pane="rule"] > .panes > [data-pane="rule"] {
+    display: flex;
+    flex-direction: column;
     }
-#ruleEditor.colorblind .ruleCell[data-tcolor="129"] {
-    color: white;
-    background-color: rgb(0, 19, 110);
+#netFilteringDialog > .panes > [data-pane="details"] > div {
+    align-items: stretch;
+    background-color: #e6e6e6;
+    border: 0;
+    border-bottom: 1px solid white;
+    display: flex;
     }
-.ruleCell[data-tcolor="130"] {
-    color: white;
-    background-color: #080;
+#netFilteringDialog > .panes > [data-pane="details"] > div > span {
+    padding: 0.5em;
     }
-#ruleEditor.colorblind .ruleCell[data-tcolor="130"] {
-    border-color: rgb(255, 194, 57);
-    color: black;
-    background-color: rgb(255, 194, 57);
+#netFilteringDialog > .panes > [data-pane="details"] > div > span:nth-of-type(1) {
+    border: 0;
+    flex-grow: 0;
+    flex-shrink: 0;
+    text-align: right;
+    width: 8em;
     }
-.ruleCell[data-pcolor="129"] {
-    background-image: url('../img/permanent-black-small.png');
-    background-repeat: no-repeat;
-    background-position: -1px -1px;
+body[dir="ltr"] #netFilteringDialog > .panes > [data-pane="details"] > div > span:nth-of-type(1) {
+    border-right: 1px solid white;
     }
-#ruleEditor.colorblind .ruleCell[data-pcolor="129"] {
-    background-image: url('../img/permanent-black-small-cb.png');
+body[dir="rtl"] #netFilteringDialog > .panes > [data-pane="details"] > div > span:nth-of-type(1) {
+    border-left: 1px solid white;
     }
-.ruleCell[data-pcolor="130"] {
-    background-image: url('../img/permanent-white-small.png');
-    background-repeat: no-repeat;
-    background-position: -1px -1px;
+#netFilteringDialog > .panes > [data-pane="details"] > div > span:nth-of-type(2) {
+    flex-grow: 1;
+    max-height: 20vh;
+    overflow: hidden auto;
+    white-space: pre-line
     }
-#ruleEditor.colorblind .ruleCell[data-pcolor="130"] {
-    background-image: url('../img/permanent-white-small-cb.png');
+#netFilteringDialog > .panes > [data-pane="details"] > div > span:nth-of-type(2):not(.prose) {
+    word-break: break-all;
     }
-
-#ruleActionPicker {
+#netFilteringDialog > .panes > [data-pane="rule"] iframe {
     border: 0;
     height: 100%;
-    left: 0;
-    margin: 0;
-    padding: 0;
-    position: absolute;
-    top: 0;
-    width: 100%;
-    z-index: 10;
     }
-.allowRule, .blockRule {
+
+#loggerExportDialog {
+    display: flex;
+    flex-direction: column;
+    }
+#loggerExportDialog .options {
+    display: flex;
+    justify-content: space-between;
+    margin-bottom: 1em;
+    }
+#loggerExportDialog .options > div {
+    display: inline-flex;
+    }
+#loggerExportDialog .options span[data-i18n] {
+    border: 1px solid lightblue;
+    cursor: pointer;
+    font-size: 90%;
     margin: 0;
-    border: 0;
-    padding: 0;
-    position: absolute;
-    left: 0;
-    width: 100%;
-    height: 50%;
-    background: transparent;
+    padding: 0.5em;
+    white-space: nowrap;
     }
-.allowRule {
-    top: 0;
+#loggerExportDialog .options span[data-i18n]:hover {
+    background-color: aliceblue;
     }
-.blockRule {
-    top: 50%;
+#loggerExportDialog .options span.on[data-i18n],
+#loggerExportDialog .options span.pushbutton:active {
+    background-color: lightblue;
     }
-.ruleCell[data-tcolor="1"] .allowRule:hover {
-    background-color: #080;
-    opacity: 0.25;
+#loggerExportDialog .output {
+    font: smaller mono;
+    height: 60vh;
+    padding: 0.5em;
+    white-space: pre;
     }
-.ruleCell[data-tcolor="1"] .blockRule:hover {
-    background-color: #c00;
-    opacity: 0.25;
+
+#loggerSettingsDialog {
+    display: flex;
+    flex-direction: column;
     }
-.ruleCell[data-tcolor="2"] .allowRule:hover {
-    background-color: #080;
-    opacity: 0.25;
+#loggerSettingsDialog > div {
+    padding-bottom: 1em;
     }
-.ruleCell[data-tcolor="2"] .blockRule:hover {
-    background-color: #c00;
-    opacity: 0.25;
+#loggerSettingsDialog > div:last-of-type {
+    padding-bottom: 0;
     }
-.ruleCell[data-tcolor="129"] .allowRule:hover {
-    background-color: transparent;
+#loggerSettingsDialog ul {
+    padding: 0;
     }
-.ruleCell[data-tcolor="129"] .blockRule:hover {
-    background-color: transparent;
+body[dir="ltr"] #loggerSettingsDialog ul {
+    padding-left: 2em;
     }
-.ruleCell[data-pcolor="130"] .allowRule:hover {
-    background-color: transparent;
+body[dir="rtl"] #loggerSettingsDialog ul {
+    padding-right: 2em;
     }
-.ruleCell[data-pcolor="130"] .blockRule:hover {
-    background-color: transparent;
+#loggerSettingsDialog li {
+    list-style-type: none;
+    margin: 0.5em 0 0 0;
     }
-#ruleEditor.colorblind .ruleCell[data-tcolor="1"] .allowRule:hover,
-#ruleEditor.colorblind .ruleCell[data-tcolor="2"] .allowRule:hover {
-    background-color: rgb(255, 194, 57);
-    opacity: 0.6;
+#loggerSettingsDialog input {
+    max-width: 6em;
     }
-#ruleEditor.colorblind .ruleCell[data-tcolor="1"] .blockRule:hover,
-#ruleEditor.colorblind .ruleCell[data-tcolor="2"] .blockRule:hover {
-    background-color: rgb(0, 19, 110);
-    opacity: 0.4;
+
+.hide {
+    display: none !important;
     }

src/css/popup.css

@@ -54,9 +54,7 @@ a {
     border: 0;
     color: #bbb;
     cursor: pointer;
-    display: block;
-    font-size: 12px;
-    line-height: 12px;
+    font: 12px/1 sans-serif;
     margin: 0;
     padding: 3px 0;
     position: relative;
@@ -65,17 +63,11 @@ a {
 
 .paneHead {
     background-color: white;
-    left: 0;
     padding: 0;
-    position: fixed;
-    right: 0;
+    position: sticky;
     top: 0;
     z-index: 100;
     }
-.paneContent {
-    padding-top: 5.5em;
-    }
-
 
 .paneHead > a:first-child {
     background-color: #444;
@@ -152,6 +144,9 @@ body .toolbar button.disabled {
     opacity: 1;
     stroke: none;
     }
+#mtxSwitches > li > svg > * {
+    fill: #bbb;
+    }
 #mtxSwitches > li.relevant > svg .dot {
     fill: #aaa;
     }
@@ -181,6 +176,13 @@ body .toolbar button.disabled {
 #mtxSwitches > li > a:hover {
     opacity: 0.8;
     }
+#mtxSwitches > li.unsupported {
+    cursor: default;
+    }
+#mtxSwitches > li.unsupported > svg .on,
+#mtxSwitches > li.unsupported > svg .off {
+    display: none;
+    }
 
 .dropdown-menu-capture {
     background-color: rgba(0,0,0,0.2);
@@ -336,19 +338,23 @@ body[data-scope="*"] .toolbar .scopeRel.disabled {
     color: #ccc;
     }
 
+body.embedded [data-extension-url],
+body.tabless .needtab {
+    display: none;
+    }
+
 .matrix {
     text-align: left;
     }
 .matRow {
+    display: flex;
     white-space: nowrap;
     }
 .matCell {
     margin: 1px 1px 0 0;
-    border: 1px dotted rgba(0,0,0,0.2);
-    padding: 6px 1px 3px 1px;
+    padding: 6px 2px;
     display: inline-block;
     box-sizing: content-box;
-    -moz-box-sizing: content-box;
     width: 2.6em;
     white-space: nowrap;
     text-align: center;
@@ -357,9 +363,8 @@ body[data-scope="*"] .toolbar .scopeRel.disabled {
     }
 
 #matHead {
-    border-top: 1px dotted #ccc;
+    padding-bottom: 1px;
     padding-top: 1px;
-    margin: 1px 0 0 0;
     }
 .paneHead .matCell:nth-child(2) {
     letter-spacing: -0.3px;
@@ -383,17 +388,14 @@ body[data-scope="*"] .toolbar .scopeRel.disabled {
     direction: inherit;
     }
 .matrix .matRow.l2 > .matCell:first-child {
-    margin-left: 1px;
-    width: calc(16em - 1px);
     }
 .matrix .matRow > .matCell:hover {
-    border-style: solid;
     }
 .matrix .matGroup .matSection {
-    margin: 2px 0 0 0;
     border: 0;
     padding: 0;
-    /* background-color: rgba(0,0,0,0.05); */
+    }
+.matrix .matGroup .matSection:hover {
     }
 .matrix .matGroup.g0 .matSection:first-child {
     margin-top: 0;
@@ -406,7 +408,7 @@ body[data-scope="*"] .toolbar .scopeRel.disabled {
     display: none;
     }
 .matrix .matSection.collapsible.collapsed .matRow.meta {
-    display: block;
+    display: flex;
     }
 .matrix .matSection.collapsible.collapsed .matRow.l1:not(.meta) {
     display: none;
@@ -416,6 +418,9 @@ body[data-scope="*"] .toolbar .scopeRel.disabled {
     }
 
 /* Collapsing of blacklisted */
+.matrix .matGroup.g4 {
+    margin-bottom: 1px;
+    }
 .matrix .g4Meta {
     margin: 0;
     padding: 0;
@@ -443,7 +448,7 @@ body.powerOff .matrix .g4Meta.g4Collapsed ~ .matSection {
     display: none;
     }
 .matrix .g4Meta.g4Collapsed ~ .matRow.ro {
-    display: block;
+    display: flex;
     }
 body.powerOff .matrix .g4Meta.g4Collapsed ~ .matRow.ro {
     display: none;
@@ -463,12 +468,10 @@ body.powerOff .matrix .g4Meta.g4Collapsed ~ .matRow.ro {
     background-color: #080;
     }
 .t1 {
-    border-color: #debaba;
     color: black;
     background-color: #f8d0d0;
     }
 .t2 {
-    border-color: #bad6ba;
     color: black;
     background-color: #d0f0d0;
     }
@@ -489,17 +492,14 @@ body.colorblind .t81 {
     background-color: rgb(0, 19, 110);
     }
 body.colorblind .t82 {
-    border-color: rgb(255, 194, 57);
     color: black;
     background-color: rgb(255, 194, 57);
     }
 body.colorblind .t1 {
-    border-color: rgba(0, 19, 110, 0.3);
     color: black;
     background-color: rgba(0, 19, 110, 0.2);
     }
 body.colorblind .t2 {
-    border-color: rgba(255, 194, 57, 0.3);
     color: black;
     background-color: rgba(255, 194, 57, 0.2);
     }
@@ -612,7 +612,7 @@ body.colorblind .rw .matCell.t2 #blacklist:hover {
     }
 .matSection.collapsible .matRow.l1 .matCell:nth-of-type(1):hover #domainOnly,
 #matHead.collapsible .matRow .matCell:nth-of-type(1):hover #domainOnly {
-    display: inline-flex;
+    display: inline-block;
     }
 #domainOnly:hover {
     opacity: 1;
@@ -638,12 +638,6 @@ body.noTabFound #noTabFound {
 body.hConstrained {
     overflow-x: auto;
     }
-body.hConstrained .paneHead {
-    left: auto;
-    position: absolute;
-    right: auto;
-    width: 100%;
-    }
 body[data-touch="true"] .matCell {
     line-height: 200%;
     }

src/css/raw-settings.css

@@ -1,20 +1,16 @@
-div.body {
-    box-sizing: border-box;
-    display: flex;
-    flex-direction: column;
+html {
     height: 100vh;
-    justify-content: space-between;
     overflow: hidden;
     }
-p {
-    margin: 0.5em 0;
+body {
+    overflow: hidden;
     }
-textarea {
-    box-sizing: border-box;
-    flex-grow: 1;
-    resize: none;
+#rawSettings {
+    border-top: 1px solid #ddd;
+    height: 75vh;
     text-align: left;
-    white-space: pre;
     width: 100%;
-    word-wrap: normal;
+    }
+.CodeMirror-wrap pre {
+    word-break: break-all;
     }

src/dashboard.html

@@ -5,15 +5,15 @@
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <link rel="shortcut icon" type="image/png" href="img/icon_16.png">
 <title data-i18n="dashboardPageName"></title>
-<link href='css/dashboard.css' rel='stylesheet' type='text/css'>
-<link href='css/common.css' rel='stylesheet' type='text/css'>
+<link href="css/dashboard.css" rel="stylesheet" type="text/css">
+<link href="css/common.css" rel="stylesheet" type="text/css">
 </head>
 
 <body>
 <div id="dashboard-nav">
     <div id="dashboard-nav-widgets">
-        <span>uMatrix</span>
-        <a class="tabButton" id="settings" href="#settings" data-dashboard-panel-url="settings.html" data-i18n="settingsPageName"></a>
+        <span data-i18n-title="extName"><img src="img/icon_64.png"></span><!--
+        --><a class="tabButton" id="settings" href="#settings" data-dashboard-panel-url="settings.html" data-i18n="settingsPageName"></a>
         <a class="tabButton" id="user-rules" href="#user-rules" data-dashboard-panel-url="user-rules.html" data-i18n="userRulesPageName"></a>
         <a class="tabButton" id="hosts-files" href="#hosts-files" data-dashboard-panel-url="hosts-files.html" data-i18n="ubiquitousRulesPageName"></a>
         <a class="tabButton" id="raw-settings" href="#raw-settings" data-dashboard-panel-url="raw-settings.html" data-i18n="rawSettingsPageName"></a>
@@ -23,6 +23,7 @@
 
 <iframe src=""></iframe>
 
+<script src="js/vapi.js"></script>
 <script src="js/vapi-common.js"></script>
 <script src="js/vapi-client.js"></script>
 <script src="js/udom.js"></script>

src/hosts-files.html

@@ -66,8 +66,10 @@
 </div><!-- end of div.body -->
 
 <script src="js/fa-icons.js"></script>
+<script src="js/vapi.js"></script>
 <script src="js/vapi-common.js"></script>
 <script src="js/vapi-client.js"></script>
+<script src="js/vapi-client-extra.js"></script>
 <script src="js/udom.js"></script>
 <script src="js/i18n.js"></script>
 <script src="js/dashboard-common.js"></script>

src/img/fontawesome/fontawesome-defs.svg

@@ -28,6 +28,7 @@ License - https://github.com/FortAwesome/Font-Awesome/tree/a8386aae19e200ddb0f68
     <defs>
     <symbol id="angle-up"             viewBox="0 0  998  582"><path d="m 998,499 q 0,13 -10,23 l -50,50 q -10,10 -23,10 -13,0 -23,-10 L 499,179 106,572 Q 96,582 83,582 70,582 60,572 L 10,522 Q 0,512 0,499 0,486 10,476 L 476,10 q 10,-10 23,-10 13,0 23,10 l 466,466 q 10,10 10,23 z"/></symbol>
     <symbol id="arrow-left"           viewBox="0 0 1472 1558"><path d="m 1472,715 0,128 q 0,53 -32.5,90.5 Q 1407,971 1355,971 l -704,0 293,294 q 38,36 38,90 0,54 -38,90 l -75,76 q -37,37 -90,37 -52,0 -91,-37 L 37,869 Q 0,832 0,779 0,727 37,688 L 688,38 q 38,-38 91,-38 52,0 90,38 l 75,74 q 38,38 38,91 0,53 -38,91 l -293,293 704,0 q 52,0 84.5,37.5 32.5,37.5 32.5,90.5 z"/></symbol>
+    <symbol id="clipboard"            viewBox="0 0 1792 1792"><path d="m 768,1664 896,0 0,-640 -416,0 q -40,0 -68,-28 -28,-28 -28,-68 l 0,-416 -384,0 0,1152 z m 256,-1440 0,-64 q 0,-13 -9.5,-22.5 Q 1005,128 992,128 l -704,0 q -13,0 -22.5,9.5 Q 256,147 256,160 l 0,64 q 0,13 9.5,22.5 9.5,9.5 22.5,9.5 l 704,0 q 13,0 22.5,-9.5 9.5,-9.5 9.5,-22.5 z m 256,672 299,0 -299,-299 0,299 z m 512,128 0,672 q 0,40 -28,68 -28,28 -68,28 l -960,0 q -40,0 -68,-28 -28,-28 -28,-68 l 0,-160 -544,0 Q 56,1536 28,1508 0,1480 0,1440 L 0,96 Q 0,56 28,28 56,0 96,0 l 1088,0 q 40,0 68,28 28,28 28,68 l 0,328 q 21,13 36,28 l 408,408 q 28,28 48,76 20,48 20,88 z"/></symbol>
     <symbol id="clock"                viewBox="0 0 1536 1536"><path d="m 896,416 0,448 q 0,14 -9,23 -9,9 -23,9 l -320,0 q -14,0 -23,-9 -9,-9 -9,-23 l 0,-64 q 0,-14 9,-23 9,-9 23,-9 l 224,0 0,-352 q 0,-14 9,-23 9,-9 23,-9 l 64,0 q 14,0 23,9 9,9 9,23 z m 416,352 q 0,-148 -73,-273 -73,-125 -198,-198 -125,-73 -273,-73 -148,0 -273,73 -125,73 -198,198 -73,125 -73,273 0,148 73,273 73,125 198,198 125,73 273,73 148,0 273,-73 125,-73 198,-198 73,-125 73,-273 z m 224,0 q 0,209 -103,385.5 Q 1330,1330 1153.5,1433 977,1536 768,1536 559,1536 382.5,1433 206,1330 103,1153.5 0,977 0,768 0,559 103,382.5 206,206 382.5,103 559,0 768,0 977,0 1153.5,103 1330,206 1433,382.5 1536,559 1536,768 Z"/></symbol>
     <symbol id="cloud-download"       viewBox="0 0 1920 1408"><path d="m 1280,800 q 0,-14 -9,-23 -9,-9 -23,-9 l -224,0 0,-352 q 0,-13 -9.5,-22.5 Q 1005,384 992,384 l -192,0 q -13,0 -22.5,9.5 Q 768,403 768,416 l 0,352 -224,0 q -13,0 -22.5,9.5 -9.5,9.5 -9.5,22.5 0,14 9,23 l 352,352 q 9,9 23,9 14,0 23,-9 l 351,-351 q 10,-12 10,-24 z m 640,224 q 0,159 -112.5,271.5 Q 1695,1408 1536,1408 l -1088,0 Q 263,1408 131.5,1276.5 0,1145 0,960 0,830 70,720 140,610 258,555 256,525 256,512 256,300 406,150 556,0 768,0 q 156,0 285.5,87 129.5,87 188.5,231 71,-62 166,-62 106,0 181,75 75,75 75,181 0,76 -41,138 130,31 213.5,135.5 Q 1920,890 1920,1024 Z"/></symbol>
     <symbol id="cloud-upload"         viewBox="0 0 1920 1408"><path d="m 1280,736 q 0,-14 -9,-23 L 919,361 q -9,-9 -23,-9 -14,0 -23,9 L 522,712 q -10,12 -10,24 0,14 9,23 9,9 23,9 l 224,0 0,352 q 0,13 9.5,22.5 9.5,9.5 22.5,9.5 l 192,0 q 13,0 22.5,-9.5 9.5,-9.5 9.5,-22.5 l 0,-352 224,0 q 13,0 22.5,-9.5 9.5,-9.5 9.5,-22.5 z m 640,288 q 0,159 -112.5,271.5 Q 1695,1408 1536,1408 l -1088,0 Q 263,1408 131.5,1276.5 0,1145 0,960 0,830 70,720 140,610 258,555 256,525 256,512 256,300 406,150 556,0 768,0 q 156,0 285.5,87 129.5,87 188.5,231 71,-62 166,-62 106,0 181,75 75,75 75,181 0,76 -41,138 130,31 213.5,135.5 Q 1920,890 1920,1024 Z"/></symbol>
@@ -42,6 +43,8 @@ License - https://github.com/FortAwesome/Font-Awesome/tree/a8386aae19e200ddb0f68
     <symbol id="info-circle"          viewBox="0 0 1536 1536"><path d="m 1024,1248 0,-160 q 0,-14 -9,-23 -9,-9 -23,-9 l -96,0 0,-512 q 0,-14 -9,-23 -9,-9 -23,-9 l -320,0 q -14,0 -23,9 -9,9 -9,23 l 0,160 q 0,14 9,23 9,9 23,9 l 96,0 0,320 -96,0 q -14,0 -23,9 -9,9 -9,23 l 0,160 q 0,14 9,23 9,9 23,9 l 448,0 q 14,0 23,-9 9,-9 9,-23 z M 896,352 896,192 q 0,-14 -9,-23 -9,-9 -23,-9 l -192,0 q -14,0 -23,9 -9,9 -9,23 l 0,160 q 0,14 9,23 9,9 23,9 l 192,0 q 14,0 23,-9 9,-9 9,-23 z m 640,416 q 0,209 -103,385.5 Q 1330,1330 1153.5,1433 977,1536 768,1536 559,1536 382.5,1433 206,1330 103,1153.5 0,977 0,768 0,559 103,382.5 206,206 382.5,103 559,0 768,0 977,0 1153.5,103 1330,206 1433,382.5 1536,559 1536,768 Z"/></symbol>
     <symbol id="list-alt"             viewBox="0 0 1792 1408"><path d="m 384,1056 0,64 q 0,13 -9.5,22.5 -9.5,9.5 -22.5,9.5 l -64,0 q -13,0 -22.5,-9.5 Q 256,1133 256,1120 l 0,-64 q 0,-13 9.5,-22.5 9.5,-9.5 22.5,-9.5 l 64,0 q 13,0 22.5,9.5 9.5,9.5 9.5,22.5 z m 0,-256 0,64 q 0,13 -9.5,22.5 Q 365,896 352,896 l -64,0 q -13,0 -22.5,-9.5 Q 256,877 256,864 l 0,-64 q 0,-13 9.5,-22.5 Q 275,768 288,768 l 64,0 q 13,0 22.5,9.5 9.5,9.5 9.5,22.5 z m 0,-256 0,64 q 0,13 -9.5,22.5 Q 365,640 352,640 l -64,0 q -13,0 -22.5,-9.5 Q 256,621 256,608 l 0,-64 q 0,-13 9.5,-22.5 Q 275,512 288,512 l 64,0 q 13,0 22.5,9.5 9.5,9.5 9.5,22.5 z m 1152,512 0,64 q 0,13 -9.5,22.5 -9.5,9.5 -22.5,9.5 l -960,0 q -13,0 -22.5,-9.5 Q 512,1133 512,1120 l 0,-64 q 0,-13 9.5,-22.5 9.5,-9.5 22.5,-9.5 l 960,0 q 13,0 22.5,9.5 9.5,9.5 9.5,22.5 z m 0,-256 0,64 q 0,13 -9.5,22.5 -9.5,9.5 -22.5,9.5 l -960,0 q -13,0 -22.5,-9.5 Q 512,877 512,864 l 0,-64 q 0,-13 9.5,-22.5 Q 531,768 544,768 l 960,0 q 13,0 22.5,9.5 9.5,9.5 9.5,22.5 z m 0,-256 0,64 q 0,13 -9.5,22.5 -9.5,9.5 -22.5,9.5 l -960,0 q -13,0 -22.5,-9.5 Q 512,621 512,608 l 0,-64 q 0,-13 9.5,-22.5 Q 531,512 544,512 l 960,0 q 13,0 22.5,9.5 9.5,9.5 9.5,22.5 z m 128,704 0,-832 q 0,-13 -9.5,-22.5 Q 1645,384 1632,384 l -1472,0 q -13,0 -22.5,9.5 Q 128,403 128,416 l 0,832 q 0,13 9.5,22.5 9.5,9.5 22.5,9.5 l 1472,0 q 13,0 22.5,-9.5 9.5,-9.5 9.5,-22.5 z m 128,-1088 0,1088 q 0,66 -47,113 -47,47 -113,47 l -1472,0 Q 94,1408 47,1361 0,1314 0,1248 L 0,160 Q 0,94 47,47 94,0 160,0 l 1472,0 q 66,0 113,47 47,47 47,113 z"/></symbol>
     <symbol id="lock"                 viewBox="0 0 1152 1408"><path d="m 320,640 512,0 0,-192 q 0,-106 -75,-181 -75,-75 -181,-75 -106,0 -181,75 -75,75 -75,181 l 0,192 z m 832,96 0,576 q 0,40 -28,68 -28,28 -68,28 l -960,0 Q 56,1408 28,1380 0,1352 0,1312 L 0,736 q 0,-40 28,-68 28,-28 68,-28 l 32,0 0,-192 Q 128,264 260,132 392,0 576,0 q 184,0 316,132 132,132 132,316 l 0,192 32,0 q 40,0 68,28 28,28 28,68 z"/></symbol>
+    <symbol id="pause-circle-o"       viewBox="0 0 1536 1536"><path d="M 768,0 Q 977,0 1153.5,103 1330,206 1433,382.5 1536,559 1536,768 1536,977 1433,1153.5 1330,1330 1153.5,1433 977,1536 768,1536 559,1536 382.5,1433 206,1330 103,1153.5 0,977 0,768 0,559 103,382.5 206,206 382.5,103 559,0 768,0 Z m 0,1312 q 148,0 273,-73 125,-73 198,-198 73,-125 73,-273 0,-148 -73,-273 -73,-125 -198,-198 -125,-73 -273,-73 -148,0 -273,73 -125,73 -198,198 -73,125 -73,273 0,148 73,273 73,125 198,198 125,73 273,73 z m 96,-224 q -14,0 -23,-9 -9,-9 -9,-23 l 0,-576 q 0,-14 9,-23 9,-9 23,-9 l 192,0 q 14,0 23,9 9,9 9,23 l 0,576 q 0,14 -9,23 -9,9 -23,9 l -192,0 z m -384,0 q -14,0 -23,-9 -9,-9 -9,-23 l 0,-576 q 0,-14 9,-23 9,-9 23,-9 l 192,0 q 14,0 23,9 9,9 9,23 l 0,576 q 0,14 -9,23 -9,9 -23,9 l -192,0 z"/></symbol>
+    <symbol id="play-circle-o"        viewBox="0 0 1536 1536"><path d="m 1184,768 q 0,37 -32,55 l -544,320 q -15,9 -32,9 -16,0 -32,-8 -32,-19 -32,-56 l 0,-640 q 0,-37 32,-56 33,-18 64,1 l 544,320 q 32,18 32,55 z m 128,0 q 0,-148 -73,-273 -73,-125 -198,-198 -125,-73 -273,-73 -148,0 -273,73 -125,73 -198,198 -73,125 -73,273 0,148 73,273 73,125 198,198 125,73 273,73 148,0 273,-73 125,-73 198,-198 73,-125 73,-273 z m 224,0 q 0,209 -103,385.5 Q 1330,1330 1153.5,1433 977,1536 768,1536 559,1536 382.5,1433 206,1330 103,1153.5 0,977 0,768 0,559 103,382.5 206,206 382.5,103 559,0 768,0 977,0 1153.5,103 1330,206 1433,382.5 1536,559 1536,768 Z"/></symbol>
     <symbol id="plus"                 viewBox="0 0 1408 1408"><path d="m 1408,608 0,192 q 0,40 -28,68 -28,28 -68,28 l -416,0 0,416 q 0,40 -28,68 -28,28 -68,28 l -192,0 q -40,0 -68,-28 -28,-28 -28,-68 l 0,-416 -416,0 Q 56,896 28,868 0,840 0,800 L 0,608 q 0,-40 28,-68 28,-28 68,-28 l 416,0 0,-416 Q 512,56 540,28 568,0 608,0 l 192,0 q 40,0 68,28 28,28 28,68 l 0,416 416,0 q 40,0 68,28 28,28 28,68 z"/></symbol>
     <symbol id="power-off"            viewBox="0 0 1536 1664"><path d="m 1536,896 q 0,156 -61,298 -61,142 -164,245 -103,103 -245,164 -142,61 -298,61 -156,0 -298,-61 Q 328,1542 225,1439 122,1336 61,1194 0,1052 0,896 0,714 80.5,553 161,392 307,283 q 43,-32 95.5,-25 52.5,7 83.5,50 32,42 24.5,94.5 Q 503,455 461,487 363,561 309.5,668 256,775 256,896 q 0,104 40.5,198.5 40.5,94.5 109.5,163.5 69,69 163.5,109.5 94.5,40.5 198.5,40.5 104,0 198.5,-40.5 Q 1061,1327 1130,1258 1199,1189 1239.5,1094.5 1280,1000 1280,896 1280,775 1226.5,668 1173,561 1075,487 1033,455 1025.5,402.5 1018,350 1050,308 q 31,-43 84,-50 53,-7 95,25 146,109 226.5,270 80.5,161 80.5,343 z m -640,-768 0,640 q 0,52 -38,90 -38,38 -90,38 -52,0 -90,-38 -38,-38 -38,-90 l 0,-640 q 0,-52 38,-90 38,-38 90,-38 52,0 90,38 38,38 38,90 z"/></symbol>
     <symbol id="puzzle-piece"         viewBox="0 0 1664 1572"><path d="m 1664,1098 q 0,81 -44.5,135 -44.5,54 -123.5,54 -41,0 -77.5,-17.5 -36.5,-17.5 -59,-38 -22.5,-20.5 -56.5,-38 -34,-17.5 -71,-17.5 -110,0 -110,124 0,39 16,115 16,76 15,115 l 0,5 q -22,0 -33,1 -34,3 -97.5,11.5 -63.5,8.5 -115.5,13.5 -52,5 -98,5 -61,0 -103,-26.5 -42,-26.5 -42,-83.5 0,-37 17.5,-71 17.5,-34 38,-56.5 20.5,-22.5 38,-59 17.5,-36.5 17.5,-77.5 0,-79 -54,-123.5 -54,-44.5 -135,-44.5 -84,0 -143,45.5 -59,45.5 -59,127.5 0,43 15,83 15,40 33.5,64.5 18.5,24.5 33.5,53 15,28.5 15,50.5 0,45 -46,89 -37,35 -117,35 -95,0 -245,-24 -9,-2 -27.5,-4 -18.5,-2 -27.5,-4 l -13,-2 q -1,0 -3,-1 -2,0 -2,-1 L 0,512 q 2,1 17.5,3.5 15.5,2.5 34,5 18.5,2.5 21.5,3.5 150,24 245,24 80,0 117,-35 46,-44 46,-89 0,-22 -15,-50.5 Q 451,345 432.5,320.5 414,296 399,256 384,216 384,173 384,91 443,45.5 502,0 587,0 667,0 721,44.5 775,89 775,168 q 0,41 -17.5,77.5 -17.5,36.5 -38,59 -20.5,22.5 -38,56.5 -17.5,34 -17.5,71 0,57 42,83.5 42,26.5 103,26.5 64,0 180,-15 116,-15 163,-17 l 0,2 q -1,2 -3.5,17.5 -2.5,15.5 -5,34 -2.5,18.5 -3.5,21.5 -24,150 -24,245 0,80 35,117 44,46 89,46 22,0 50.5,-15 28.5,-15 53,-33.5 24.5,-18.5 64.5,-33.5 40,-15 83,-15 82,0 127.5,59 45.5,59 45.5,143 z"/></symbol>

src/js/about.js

@@ -1,7 +1,7 @@
 /*******************************************************************************
 
     uMatrix - a Chromium browser extension to black/white list requests.
-    Copyright (C) 2014-2018 Raymond Hill
+    Copyright (C) 2014-present Raymond Hill
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -25,83 +25,82 @@
 
 /******************************************************************************/
 
-uDom.onLoad(function() {
+{
+// >>>>> start of local scope
 
 /******************************************************************************/
 
-var backupUserDataToFile = function() {
-    var userDataReady = function(userData) {
+const backupUserDataToFile = function() {
+    vAPI.messaging.send('dashboard', {
+        what: 'getAllUserData',
+    }).then(userData => {
         vAPI.download({
-            'url': 'data:text/plain,' + encodeURIComponent(JSON.stringify(userData, null, 2)),
-            'filename': uDom('[data-i18n="aboutBackupFilename"]').text()
+            url: 'data:text/plain,' + encodeURIComponent(
+                JSON.stringify(userData, null, 2)
+            ),
+            filename:
+                uDom.nodeFromSelector('[data-i18n="aboutBackupFilename"]')
+                    .textContent
+        });
     });
-    };
-
-    vAPI.messaging.send('about.js', { what: 'getAllUserData' }, userDataReady);
 };
 
 /******************************************************************************/
 
-function restoreUserDataFromFile() {
-    var validateBackup = function(s) {
-        var userData = null;
+const restoreUserDataFromFile = function() {
+    const validateBackup = function(s) {
+        let userData;
         try {
             userData = JSON.parse(s);
         }
-        catch (e) {
-            userData = null;
-        }
-        if ( userData === null ) {
-            return null;
+        catch (ex) {
         }
+        if ( userData === undefined ) { return; }
         if (
             typeof userData !== 'object' ||
             typeof userData.app !== 'string' ||
             typeof userData.version !== 'string' ||
             typeof userData.when !== 'number' ||
             typeof userData.settings !== 'object' ||
-            (typeof userData.rules !== 'string' &&
-                Array.isArray(userData.rules) === false)
+            typeof userData.rules !== 'string' &&
+                Array.isArray(userData.rules) === false
         ) {
-            return null;
+            return;
         }
         return userData;
     };
 
-    var fileReaderOnLoadHandler = function() {
-        var userData = validateBackup(this.result);
-        if ( !userData ) {
+    const fileReaderOnLoadHandler = function() {
+        const userData = validateBackup(this.result);
+        if ( userData instanceof Object === false ) {
             window.alert(uDom('[data-i18n="aboutRestoreError"]').text());
             return;
         }
-        var time = new Date(userData.when);
-        var msg = uDom('[data-i18n="aboutRestoreConfirm"]').text()
+        const time = new Date(userData.when);
+        const msg = uDom.nodeFromSelector('[data-i18n="aboutRestoreConfirm"]')
+                        .textContent
                         .replace('{{time}}', time.toLocaleString());
-        var proceed = window.confirm(msg);
+        const proceed = window.confirm(msg);
         if ( proceed ) {
-            vAPI.messaging.send(
-                'about.js',
-                { what: 'restoreAllUserData', userData: userData }
-            );
+            vAPI.messaging.send('dashboard', {
+                what: 'restoreAllUserData',
+                userData
+            });
         }
     };
 
-    var file = this.files[0];
-    if ( file === undefined || file.name === '' ) {
-        return;
-    }
-    if ( file.type.indexOf('text') !== 0 ) {
-        return;
-    }
-    var fr = new FileReader();
+    const file = this.files[0];
+    if ( file === undefined || file.name === '' ) { return; }
+    if ( file.type.indexOf('text') !== 0 ) { return; }
+    const fr = new FileReader();
     fr.onload = fileReaderOnLoadHandler;
     fr.readAsText(file);
-}
+};
 
 /******************************************************************************/
 
-var startRestoreFilePicker = function() {
-    var input = document.getElementById('restoreFilePicker');
+const startRestoreFilePicker = function() {
+    const input = document.getElementById('restoreFilePicker');
     // Reset to empty string, this will ensure an change event is properly
     // triggered if the user pick a file, even if it is the same as the last
     // one picked.
@@ -111,28 +110,30 @@ var startRestoreFilePicker = function() {
 
 /******************************************************************************/
 
-var resetUserData = function() {
-    var proceed = window.confirm(uDom('[data-i18n="aboutResetConfirm"]').text());
-    if ( proceed ) {
-        vAPI.messaging.send('about.js', { what: 'resetAllUserData' });
-    }
+const resetUserData = function() {
+    const msg = uDom.nodeFromSelector('[data-i18n="aboutResetConfirm"]')
+                    .textContent;
+    const proceed = window.confirm(msg);
+    if ( proceed !== true ) { return; }
+    vAPI.messaging.send('dashboard', {
+        what: 'resetAllUserData',
+    });
 };
 
 /******************************************************************************/
 
-(function() {
-    var renderStats = function(details) {
+vAPI.messaging.send('dashboard', {
+    what: 'getSomeStats',
+}).then(details => {
     document.getElementById('aboutVersion').textContent = details.version;
-        var template = uDom('[data-i18n="aboutStorageUsed"]').text();
-        var storageUsed = '?';
+    const template = uDom('[data-i18n="aboutStorageUsed"]').text();
+    let storageUsed = '?';
     if ( typeof details.storageUsed === 'number' ) {
         storageUsed = details.storageUsed.toLocaleString();
     }
     document.getElementById('aboutStorageUsed').textContent =
         template.replace('{{storageUsed}}', storageUsed);
-    };
-    vAPI.messaging.send('about.js', { what: 'getSomeStats' }, renderStats);
-})();
+});
 
 /******************************************************************************/
 
@@ -143,4 +144,5 @@ uDom('#resetUserDataButton').on('click', resetUserData);
 
 /******************************************************************************/
 
-});
+// <<<<< end of local scope
+}

src/js/asset-viewer.js

@@ -1,7 +1,7 @@
 /*******************************************************************************
 
-    uMatrix - a Chromium browser extension to block requests.
-    Copyright (C) 2014-2017 Raymond Hill
+    uBlock Origin - a browser extension to block requests.
+    Copyright (C) 2014-present Raymond Hill
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -16,30 +16,41 @@
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see {http://www.gnu.org/licenses/}.
 
-    Home: https://github.com/gorhill/uMatrix
+    Home: https://github.com/gorhill/uBlock
 */
 
+/* global CodeMirror, uBlockDashboard */
+
 'use strict';
 
 /******************************************************************************/
 
-(function() {
-
-    var onAssetContentReceived = function(details) {
-        document.getElementById('content').textContent =
-            details && (details.content || '');
-    };
-
-    var q = window.location.search;
-    var matches = q.match(/^\?url=([^&]+)/);
-    if ( !matches || matches.length !== 2 ) {
-        return;
+(async ( ) => {
+    const params = new URL(document.location).searchParams;
+    const assetKey = params.get('url');
+    if ( assetKey === null ) { return; }
+
+    const cmEditor = new CodeMirror(
+        document.getElementById('content'),
+        {
+            autofocus: true,
+            lineNumbers: true,
+            lineWrapping: true,
+            readOnly: true,
+            styleActiveLine: true,
         }
-
-    vAPI.messaging.send(
-        'asset-viewer.js',
-        { what : 'getAssetContent', url: matches[1] },
-        onAssetContentReceived
     );
 
+    uBlockDashboard.patchCodeMirrorEditor(cmEditor);
+
+    const details = await vAPI.messaging.send('default', {
+        what : 'getAssetContent',
+        url: assetKey,
+    });
+    cmEditor.setValue(details && details.content || '');
+    if ( details.sourceURL ) {
+        const a = document.querySelector('.cm-search-widget .sourceURL');
+        a.setAttribute('href', details.sourceURL);
+        a.setAttribute('title', details.sourceURL);
+    }
 })();

src/js/background.js

@@ -23,7 +23,7 @@
 
 /******************************************************************************/
 
-const µMatrix = (function() { // jshint ignore:line
+const µMatrix = (( ) => { // jshint ignore:line
 
 /******************************************************************************/
 
@@ -54,9 +54,22 @@ const oneDay = 24 * oneHour;
 */
 
 const rawSettingsDefault = {
+    assetFetchBypassBrowserCache: false,
+    assetFetchTimeout: 30,
+    autoUpdateAssetFetchPeriod: 120,
+    cnameIgnoreList: 'unset',
+    cnameIgnore1stParty: true,
+    cnameIgnoreExceptions: true,
+    cnameIgnoreRootDocument: true,
+    cnameMaxTTL: 60,
+    cnameReplayFullURL: false,
+    consoleLogLevel: 'unset',
     contributorMode: false,
     disableCSPReportInjection: false,
+    disableWebAssembly: false,
     enforceEscapedFragment: true,
+    loggerPopupType: 'popup',
+    manualUpdateAssetFetchPeriod: 500,
     placeholderBackground:
         [
             'url("data:image/png;base64,',
@@ -136,7 +149,6 @@ return {
         externalHostsFiles: [],
         externalRecipeFiles: [],
         iconBadgeEnabled: true,
-        maxLoggedRequests: 1000,
         noTooltips: false,
         popupCollapseAllDomains: false,
         popupCollapseBlacklistedDomains: false,
@@ -155,23 +167,26 @@ return {
     },
 
     rawSettingsDefault: rawSettingsDefault,
-    rawSettings: (function() {
-        let out = Object.assign({}, rawSettingsDefault),
-            json = vAPI.localStorage.getItem('immediateRawSettings');
-        if ( typeof json === 'string' ) {
+    rawSettings: (( ) => {
+        const out = Object.assign({}, rawSettingsDefault);
+        const json = vAPI.localStorage.getItem('immediateRawSettings');
+        if ( typeof json !== 'string' ) { return out; }
         try {
-                let o = JSON.parse(json);
+            const o = JSON.parse(json);
             if ( o instanceof Object ) {
                 for ( const k in o ) {
-                        if ( out.hasOwnProperty(k) ) {
-                            out[k] = o[k];
+                    if ( out.hasOwnProperty(k) ) { out[k] = o[k]; }
                 }
+                self.log.verbosity = out.consoleLogLevel;
+                if ( typeof out.suspendTabsUntilReady === 'boolean' ) {
+                    out.suspendTabsUntilReady = out.suspendTabsUntilReady
+                        ? 'yes'
+                        : 'unset';
                 }
             }
         }
         catch(ex) {
         }
-        }
         return out;
     })(),
     rawSettingsWriteTime: 0,
@@ -201,6 +216,7 @@ return {
     pMatrix: null,
 
     ubiquitousBlacklist: null,
+    ubiquitousBlacklistRef: null,
 
     // various stats
     cookieRemovedCounter: 0,
@@ -208,7 +224,6 @@ return {
     cookieHeaderFoiledCounter: 0,
     hyperlinkAuditingFoiledCounter: 0,
     browserCacheClearedCounter: 0,
-    storageUsed: 0,
 
     // record what the browser is doing behind the scene
     behindTheSceneScope: 'behind-the-scene',

src/js/browsercache.js

@@ -23,24 +23,21 @@
 
 /******************************************************************************/
 
-(function() {
+{
+// >>>>> start of local scope
 
 /******************************************************************************/
 
 // Browser data jobs
 
-var clearCache = function() {
+const clearCache = function() {
     vAPI.setTimeout(clearCache, 15 * 60 * 1000);
 
-    var µm = µMatrix;
-    if ( !µm.userSettings.clearBrowserCache ) {
-        return;
-    }
+    const µm = µMatrix;
+    if ( µm.userSettings.clearBrowserCache !== true ) { return; }
 
     µm.clearBrowserCacheCycle -= 15;
-    if ( µm.clearBrowserCacheCycle > 0 ) {
-        return;
-    }
+    if ( µm.clearBrowserCacheCycle > 0 ) { return; }
 
     vAPI.browserData.clearCache();
 
@@ -48,15 +45,17 @@ var clearCache = function() {
     µm.browserCacheClearedCounter++;
 
     // TODO: i18n
-    µm.logger.writeOne({ info: vAPI.i18n('loggerEntryBrowserCacheCleared') });
-
-    //console.debug('clearBrowserCacheCallback()> vAPI.browserData.clearCache() called');
+    µm.logger.writeOne({
+        realm: 'message',
+        text: vAPI.i18n('loggerEntryBrowserCacheCleared'),
+    });
 };
 
 vAPI.setTimeout(clearCache, 15 * 60 * 1000);
 
 /******************************************************************************/
 
-})();
+// <<<<< end of local scope
+}
 
 /******************************************************************************/

src/js/cachestorage.js

@@ -0,0 +1,465 @@
+/*******************************************************************************
+
+    uBlock Origin - a browser extension to block requests.
+    Copyright (C) 2016-present The uBlock Origin authors
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see {http://www.gnu.org/licenses/}.
+
+    Home: https://github.com/gorhill/uBlock
+*/
+
+/* global IDBDatabase, indexedDB */
+
+'use strict';
+
+/******************************************************************************/
+
+// The code below has been originally manually imported from:
+// Commit: https://github.com/nikrolls/uBlock-Edge/commit/d1538ea9bea89d507219d3219592382eee306134
+// Commit date: 29 October 2016
+// Commit author: https://github.com/nikrolls
+// Commit message: "Implement cacheStorage using IndexedDB"
+
+// The original imported code has been subsequently modified as it was not
+// compatible with Firefox.
+// (a Promise thing, see https://github.com/dfahlander/Dexie.js/issues/317)
+// Furthermore, code to migrate from browser.storage.local to vAPI.storage
+// has been added, for seamless migration of cache-related entries into
+// indexedDB.
+
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1371255
+//   Firefox-specific: we use indexedDB because browser.storage.local() has
+//   poor performance in Firefox.
+// https://github.com/uBlockOrigin/uBlock-issues/issues/328
+//   Use IndexedDB for Chromium as well, to take advantage of LZ4
+//   compression.
+// https://github.com/uBlockOrigin/uBlock-issues/issues/399
+//   Revert Chromium support of IndexedDB, use advanced setting to force
+//   IndexedDB.
+// https://github.com/uBlockOrigin/uBlock-issues/issues/409
+//   Allow forcing the use of webext storage on Firefox.
+
+µMatrix.cacheStorage = (function() {
+
+    const STORAGE_NAME = 'uMatrixCacheStorage';
+
+    // Default to webext storage.
+    const localStorage = webext.storage.local;
+    const api = {
+        name: 'browser.storage.local',
+        get: localStorage.get,
+        set: localStorage.set,
+        remove: localStorage.remove,
+        clear: localStorage.clear,
+        getBytesInUse: localStorage.getBytesInUse,
+        select: function(selectedBackend) {
+            let actualBackend = selectedBackend;
+            if ( actualBackend === undefined || actualBackend === 'unset' ) {
+                actualBackend = vAPI.webextFlavor.soup.has('firefox')
+                    ? 'indexedDB'
+                    : 'browser.storage.local';
+            }
+            if ( actualBackend === 'indexedDB' ) {
+                return selectIDB().then(success => {
+                    if ( success || selectedBackend === 'indexedDB' ) {
+                        clearWebext();
+                        return 'indexedDB';
+                    }
+                    clearIDB();
+                    return 'browser.storage.local';
+                });
+            }
+            if ( actualBackend === 'browser.storage.local' ) {
+                clearIDB();
+            }
+            return Promise.resolve('browser.storage.local');
+            
+        },
+        error: undefined
+    };
+
+    // Reassign API entries to that of indexedDB-based ones
+    const selectIDB = async function() {
+        let db;
+        let dbPromise;
+        let dbTimer;
+
+        const noopfn = function () {
+        };
+
+        const disconnect = function() {
+            if ( dbTimer !== undefined ) {
+                clearTimeout(dbTimer);
+                dbTimer = undefined;
+            }
+            if ( db instanceof IDBDatabase ) {
+                db.close();
+                db = undefined;
+            }
+        };
+
+        const keepAlive = function() {
+            if ( dbTimer !== undefined ) {
+                clearTimeout(dbTimer);
+            }
+            dbTimer = vAPI.setTimeout(
+                ( ) => {
+                    dbTimer = undefined;
+                    disconnect();
+                },
+                Math.max(
+                    µMatrix.hiddenSettings.autoUpdateAssetFetchPeriod * 2 * 1000,
+                    180000
+                )
+            );
+        };
+
+        // https://github.com/gorhill/uBlock/issues/3156
+        //   I have observed that no event was fired in Tor Browser 7.0.7 +
+        //   medium security level after the request to open the database was
+        //   created. When this occurs, I have also observed that the `error`
+        //   property was already set, so this means uBO can detect here whether
+        //   the database can be opened successfully. A try-catch block is
+        //   necessary when reading the `error` property because we are not
+        //   allowed to read this propery outside of event handlers in newer
+        //   implementation of IDBRequest (my understanding).
+
+        const getDb = function() {
+            keepAlive();
+            if ( db !== undefined ) {
+                return Promise.resolve(db);
+            }
+            if ( dbPromise !== undefined ) {
+                return dbPromise;
+            }
+            dbPromise = new Promise(resolve => {
+                let req;
+                try {
+                    req = indexedDB.open(STORAGE_NAME, 1);
+                    if ( req.error ) {
+                        console.log(req.error);
+                        req = undefined;
+                    }
+                } catch(ex) {
+                }
+                if ( req === undefined ) {
+                    db = null;
+                    dbPromise = undefined;
+                    return resolve(null);
+                }
+                req.onupgradeneeded = function(ev) {
+                    if ( ev.oldVersion === 1 ) { return; }
+                    try {
+                        const db = ev.target.result;
+                        db.createObjectStore(STORAGE_NAME, { keyPath: 'key' });
+                    } catch(ex) {
+                        req.onerror();
+                    }
+                };
+                req.onsuccess = function(ev) {
+                    if ( resolve === undefined ) { return; }
+                    req = undefined;
+                    db = ev.target.result;
+                    dbPromise = undefined;
+                    resolve(db);
+                    resolve = undefined;
+                };
+                req.onerror = req.onblocked = function() {
+                    if ( resolve === undefined ) { return; }
+                    req = undefined;
+                    console.log(this.error);
+                    db = null;
+                    dbPromise = undefined;
+                    resolve(null);
+                    resolve = undefined;
+                };
+                setTimeout(( ) => {
+                    if ( resolve === undefined ) { return; }
+                    db = null;
+                    dbPromise = undefined;
+                    resolve(null);
+                    resolve = undefined;
+                }, 5000);
+            });
+            return dbPromise;
+        };
+
+        const getFromDb = async function(keys, keyvalStore, callback) {
+            if ( typeof callback !== 'function' ) { return; }
+            if ( keys.length === 0 ) { return callback(keyvalStore); }
+            const promises = [];
+            const gotOne = function() {
+                if ( typeof this.result !== 'object' ) { return; }
+                keyvalStore[this.result.key] = this.result.value;
+                if ( this.result.value instanceof Blob === false ) { return; }
+                promises.push(
+                    µMatrix.lz4Codec.decode(
+                        this.result.key,
+                        this.result.value
+                    ).then(result => {
+                        keyvalStore[result.key] = result.data;
+                    })
+                );
+            };
+            try {
+                const db = await getDb();
+                if ( !db ) { return callback(); }
+                const transaction = db.transaction(STORAGE_NAME, 'readonly');
+                transaction.oncomplete =
+                transaction.onerror =
+                transaction.onabort = ( ) => {
+                    Promise.all(promises).then(( ) => {
+                        callback(keyvalStore);
+                    });
+                };
+                const table = transaction.objectStore(STORAGE_NAME);
+                for ( const key of keys ) {
+                    const req = table.get(key);
+                    req.onsuccess = gotOne;
+                    req.onerror = noopfn;
+                }
+            }
+            catch(reason) {
+                console.info(`cacheStorage.getFromDb() failed: ${reason}`);
+                callback();
+            }
+        };
+
+        const visitAllFromDb = async function(visitFn) {
+            const db = await getDb();
+            if ( !db ) { return visitFn(); }
+            const transaction = db.transaction(STORAGE_NAME, 'readonly');
+            transaction.oncomplete =
+            transaction.onerror =
+            transaction.onabort = ( ) => visitFn();
+            const table = transaction.objectStore(STORAGE_NAME);
+            const req = table.openCursor();
+            req.onsuccess = function(ev) {
+                let cursor = ev.target && ev.target.result;
+                if ( !cursor ) { return; }
+                let entry = cursor.value;
+                visitFn(entry);
+                cursor.continue();
+            };
+        };
+
+        const getAllFromDb = function(callback) {
+            if ( typeof callback !== 'function' ) { return; }
+            const promises = [];
+            const keyvalStore = {};
+            visitAllFromDb(entry => {
+                if ( entry === undefined ) {
+                    Promise.all(promises).then(( ) => {
+                        callback(keyvalStore);
+                    });
+                    return;
+                }
+                keyvalStore[entry.key] = entry.value;
+                if ( entry.value instanceof Blob === false ) { return; }
+                promises.push(
+                    µMatrix.lz4Codec.decode(
+                        entry.key,
+                        entry.value
+                    ).then(result => {
+                        keyvalStore[result.key] = result.value;
+                    })
+                );
+            }).catch(reason => {
+                console.info(`cacheStorage.getAllFromDb() failed: ${reason}`);
+                callback();
+            });
+        };
+
+        // https://github.com/uBlockOrigin/uBlock-issues/issues/141
+        //   Mind that IDBDatabase.transaction() and IDBObjectStore.put()
+        //   can throw:
+        //   https://developer.mozilla.org/en-US/docs/Web/API/IDBDatabase/transaction
+        //   https://developer.mozilla.org/en-US/docs/Web/API/IDBObjectStore/put
+
+        const putToDb = async function(keyvalStore, callback) {
+            if ( typeof callback !== 'function' ) {
+                callback = noopfn;
+            }
+            const keys = Object.keys(keyvalStore);
+            if ( keys.length === 0 ) { return callback(); }
+            const promises = [ getDb() ];
+            const entries = [];
+            const dontCompress =
+                µMatrix.hiddenSettings.cacheStorageCompression !== true;
+            const handleEncodingResult = result => {
+                entries.push({ key: result.key, value: result.data });
+            };
+            for ( const key of keys ) {
+                const data = keyvalStore[key];
+                const isString = typeof data === 'string';
+                if ( isString === false || dontCompress ) {
+                    entries.push({ key, value: data });
+                    continue;
+                }
+                promises.push(
+                    µMatrix.lz4Codec.encode(key, data).then(handleEncodingResult)
+                );
+            }
+            const finish = ( ) => {
+                if ( callback === undefined ) { return; }
+                let cb = callback;
+                callback = undefined;
+                cb();
+            };
+            try {
+                const results = await Promise.all(promises);
+                const db = results[0];
+                if ( !db ) { return callback(); }
+                const transaction = db.transaction(
+                    STORAGE_NAME,
+                    'readwrite'
+                );
+                transaction.oncomplete =
+                transaction.onerror =
+                transaction.onabort = finish;
+                const table = transaction.objectStore(STORAGE_NAME);
+                for ( const entry of entries ) {
+                    table.put(entry);
+                }
+            } catch (ex) {
+                finish();
+            }
+        };
+
+        const deleteFromDb = async function(input, callback) {
+            if ( typeof callback !== 'function' ) {
+                callback = noopfn;
+            }
+            const keys = Array.isArray(input) ? input.slice() : [ input ];
+            if ( keys.length === 0 ) { return callback(); }
+            const finish = ( ) => {
+                if ( callback === undefined ) { return; }
+                let cb = callback;
+                callback = undefined;
+                cb();
+            };
+            try {
+                const db = await getDb();
+                if ( !db ) { return callback(); }
+                const transaction = db.transaction(STORAGE_NAME, 'readwrite');
+                transaction.oncomplete =
+                transaction.onerror =
+                transaction.onabort = finish;
+                const table = transaction.objectStore(STORAGE_NAME);
+                for ( const key of keys ) {
+                    table.delete(key);
+                }
+            } catch (ex) {
+                finish();
+            }
+        };
+
+        const clearDb = async function(callback) {
+            if ( typeof callback !== 'function' ) {
+                callback = noopfn;
+            }
+            try {
+                const db = await getDb();
+                if ( !db ) { return callback(); }
+                const transaction = db.transaction(STORAGE_NAME, 'readwrite');
+                transaction.oncomplete =
+                transaction.onerror =
+                transaction.onabort = ( ) => {
+                    callback();
+                };
+                transaction.objectStore(STORAGE_NAME).clear();
+            }
+            catch(reason) {
+                console.info(`cacheStorage.clearDb() failed: ${reason}`);
+                callback();
+            }
+        };
+
+        await getDb();
+        if ( !db ) { return false; }
+
+        api.name = 'indexedDB';
+        api.get = function get(keys) {
+            return new Promise(resolve => {
+                if ( keys === null ) {
+                    return getAllFromDb(bin => resolve(bin));
+                }
+                let toRead, output = {};
+                if ( typeof keys === 'string' ) {
+                    toRead = [ keys ];
+                } else if ( Array.isArray(keys) ) {
+                    toRead = keys;
+                } else /* if ( typeof keys === 'object' ) */ {
+                    toRead = Object.keys(keys);
+                    output = keys;
+                }
+                getFromDb(toRead, output, bin => resolve(bin));
+            });
+        };
+        api.set = function set(keys) {
+            return new Promise(resolve => {
+                putToDb(keys, details => resolve(details));
+            });
+        };
+        api.remove = function remove(keys) {
+            return new Promise(resolve => {
+                deleteFromDb(keys, ( ) => resolve());
+            });
+        };
+        api.clear = function clear() {
+            return new Promise(resolve => {
+                clearDb(( ) => resolve());
+            });
+        };
+        api.getBytesInUse = function getBytesInUse() {
+            return Promise.resolve(0);
+        };
+        return true;
+    };
+
+    // https://github.com/uBlockOrigin/uBlock-issues/issues/328
+    //   Delete cache-related entries from webext storage.
+    const clearWebext = async function() {
+        const bin = await webext.storage.local.get('assetCacheRegistry');
+        if (
+            bin instanceof Object === false ||
+            bin.assetCacheRegistry instanceof Object === false
+        ) {
+            return;
+        }
+        const toRemove = [
+            'assetCacheRegistry',
+            'assetSourceRegistry',
+            'resourcesSelfie',
+            'selfie'
+        ];
+        for ( const key in bin.assetCacheRegistry ) {
+            if ( bin.assetCacheRegistry.hasOwnProperty(key) ) {
+                toRemove.push('cache/' + key);
+            }
+        }
+        webext.storage.local.remove(toRemove);
+    };
+
+    const clearIDB = function() {
+        try {
+            indexedDB.deleteDatabase(STORAGE_NAME);
+        } catch(ex) {
+        }
+    };
+
+    return api;
+}());
+
+/******************************************************************************/

src/js/cloud-ui.js

@@ -25,7 +25,7 @@
 
 /******************************************************************************/
 
-(function() {
+(( ) => {
 
 /******************************************************************************/
 
@@ -39,19 +39,15 @@ self.cloud = {
 
 /******************************************************************************/
 
-var widget = uDom.nodeFromId('cloudWidget');
-if ( widget === null ) {
-    return;
-}
+const widget = uDom.nodeFromId('cloudWidget');
+if ( widget === null ) { return; }
 
 self.cloud.datakey = widget.getAttribute('data-cloud-entry') || '';
-if ( self.cloud.datakey === '' ) {
-    return;
-}
+if ( self.cloud.datakey === '' ) { return; }
 
 /******************************************************************************/
 
-var onCloudDataReceived = function(entry) {
+const onCloudDataReceived = function(entry) {
     if ( entry instanceof Object === false ) { return; }
 
     self.cloud.data = entry.data;
@@ -59,7 +55,7 @@ var onCloudDataReceived = function(entry) {
     uDom.nodeFromId('cloudPull').removeAttribute('disabled');
     uDom.nodeFromId('cloudPullAndMerge').removeAttribute('disabled');
 
-    let timeOptions = {
+    const timeOptions = {
         weekday: 'short',
         year: 'numeric',
         month: 'short',
@@ -70,7 +66,7 @@ var onCloudDataReceived = function(entry) {
         timeZoneName: 'short'
     };
 
-    let time = new Date(entry.tstamp);
+    const time = new Date(entry.tstamp);
     widget.querySelector('[data-i18n="cloudNoData"]').textContent =
         entry.source + '\n' +
         time.toLocaleString('fullwide', timeOptions);
@@ -78,37 +74,31 @@ var onCloudDataReceived = function(entry) {
 
 /******************************************************************************/
 
-var fetchCloudData = function() {
-    vAPI.messaging.send(
-        'cloud-ui.js',
-        {
+const fetchCloudData = function() {
+    vAPI.messaging.send('cloud-ui.js', {
         what: 'cloudPull',
         datakey: self.cloud.datakey
-        },
-        onCloudDataReceived
-    );
+    }).then(response => {
+        onCloudDataReceived(response);
+    });
 };
 
 /******************************************************************************/
 
-var pushData = function() {
-    if ( typeof self.cloud.onPush !== 'function' ) {
-        return;
-    }
-    vAPI.messaging.send(
-        'cloud-ui.js',
-        {
+const pushData = function() {
+    if ( typeof self.cloud.onPush !== 'function' ) { return; }
+    vAPI.messaging.send('cloud-ui.js', {
         what: 'cloudPush',
         datakey: self.cloud.datakey,
         data: self.cloud.onPush()
-        },
-        fetchCloudData
-    );
+    }).then(( ) => {
+        fetchCloudData();
+    });
 };
 
 /******************************************************************************/
 
-var pullData = function(ev) {
+const pullData = function(ev) {
     if ( typeof self.cloud.onPull === 'function' ) {
         self.cloud.onPull(self.cloud.data, ev.shiftKey);
     }
@@ -116,7 +106,7 @@ var pullData = function(ev) {
 
 /******************************************************************************/
 
-var pullAndMergeData = function() {
+const pullAndMergeData = function() {
     if ( typeof self.cloud.onPull === 'function' ) {
         self.cloud.onPull(self.cloud.data, true);
     }
@@ -124,8 +114,8 @@ var pullAndMergeData = function() {
 
 /******************************************************************************/
 
-var openOptions = function() {
-    let input = uDom.nodeFromId('cloudDeviceName');
+const openOptions = function() {
+    const input = uDom.nodeFromId('cloudDeviceName');
     input.value = self.cloud.options.deviceName;
     input.setAttribute('placeholder', self.cloud.options.defaultDeviceName);
     uDom.nodeFromId('cloudOptions').classList.add('show');
@@ -133,50 +123,46 @@ var openOptions = function() {
 
 /******************************************************************************/
 
-var closeOptions = function(ev) {
-    let root = uDom.nodeFromId('cloudOptions');
-    if ( ev.target !== root ) {
-        return;
-    }
+const closeOptions = function(ev) {
+    const root = uDom.nodeFromId('cloudOptions');
+    if ( ev.target !== root ) { return; }
     root.classList.remove('show');
 };
 
 /******************************************************************************/
 
-var submitOptions = function() {
-    let onOptions = function(options) {
-        if ( typeof options !== 'object' || options === null ) {
-            return;
-        }
-        self.cloud.options = options;
-    };
-
+const submitOptions = function() {
     vAPI.messaging.send('cloud-ui.js', {
         what: 'cloudSetOptions',
         options: {
             deviceName: uDom.nodeFromId('cloudDeviceName').value
         }
-    }, onOptions);
+    }).then(options => {
+        if ( typeof options !== 'object' || options === null ) { return; }
+        self.cloud.options = options;
+    });
     uDom.nodeFromId('cloudOptions').classList.remove('show');
 };
 
 /******************************************************************************/
 
-var onInitialize = function(options) {
+vAPI.messaging.send('cloud-ui.js', {
+    what: 'cloudGetOptions'
+}).then(options => {
     if ( typeof options !== 'object' || options === null ) { return; }
 
     if ( !options.enabled ) { return; }
     self.cloud.options = options;
 
-    let xhr = new XMLHttpRequest();
+    const xhr = new XMLHttpRequest();
     xhr.open('GET', 'cloud-ui.html', true);
     xhr.overrideMimeType('text/html;charset=utf-8');
     xhr.responseType = 'text';
     xhr.onload = function() {
         this.onload = null;
-        let parser = new DOMParser(),
-            parsed = parser.parseFromString(this.responseText, 'text/html'),
-            fromParent = parsed.body;
+        const parser = new DOMParser();
+        const parsed = parser.parseFromString(this.responseText, 'text/html');
+        const fromParent = parsed.body;
         while ( fromParent.firstElementChild !== null ) {
             widget.appendChild(
                 document.adoptNode(fromParent.firstElementChild)
@@ -198,12 +184,8 @@ var onInitialize = function(options) {
         fetchCloudData();
     };
     xhr.send();
-};
-
-vAPI.messaging.send('cloud-ui.js', { what: 'cloudGetOptions' }, onInitialize);
+});
 
 /******************************************************************************/
 
-// https://www.youtube.com/watch?v=aQFp67VoiDA
-
 })();

src/js/codemirror/mode/raw-settings.js

@@ -0,0 +1,37 @@
+/*******************************************************************************
+
+    uBlock Origin - a browser extension to block requests.
+    Copyright (C) 2019-present Raymond Hill
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see {http://www.gnu.org/licenses/}.
+
+    Home: https://github.com/gorhill/uBlock
+*/
+
+/* global CodeMirror */
+
+'use strict';
+
+CodeMirror.defineMode("raw-settings", function() {
+    return {
+        token: function(stream) {
+            if ( stream.sol() ) {
+                stream.match(/\s*\S+/);
+                return 'keyword';
+            }
+            stream.skipToEnd();
+            return null;
+        }
+    };
+});

src/js/codemirror/search.js

@@ -0,0 +1,336 @@
+// The following code is heavily based on the standard CodeMirror
+// search addon found at: https://codemirror.net/addon/search/search.js
+// I added/removed and modified code in order to get a closer match to a
+// browser's built-in find-in-page feature which are just enough for
+// uBlock Origin.
+
+
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: http://codemirror.net/LICENSE
+
+// Define search commands. Depends on dialog.js or another
+// implementation of the openDialog method.
+
+// Replace works a little oddly -- it will do the replace on the next
+// Ctrl-G (or whatever is bound to findNext) press. You prevent a
+// replace by making sure the match is no longer selected when hitting
+// Ctrl-G.
+
+/* globals define, require, CodeMirror */
+
+'use strict';
+
+(function(mod) {
+  if (typeof exports === "object" && typeof module === "object") // CommonJS
+    mod(require("../../lib/codemirror"), require("./searchcursor"), require("../dialog/dialog"));
+  else if (typeof define === "function" && define.amd) // AMD
+    define(["../../lib/codemirror", "./searchcursor", "../dialog/dialog"], mod);
+  else // Plain browser env
+    mod(CodeMirror);
+})(function(CodeMirror) {
+
+    function searchOverlay(query, caseInsensitive) {
+        if (typeof query === "string")
+            query = new RegExp(query.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&"), caseInsensitive ? "gi" : "g");
+        else if (!query.global)
+            query = new RegExp(query.source, query.ignoreCase ? "gi" : "g");
+
+        return {
+            token: function(stream) {
+                query.lastIndex = stream.pos;
+                var match = query.exec(stream.string);
+                if (match && match.index === stream.pos) {
+                    stream.pos += match[0].length || 1;
+                    return "searching";
+                } else if (match) {
+                    stream.pos = match.index;
+                } else {
+                    stream.skipToEnd();
+                }
+            }
+        };
+    }
+
+    function searchWidgetKeydownHandler(cm, ev) {
+        var keyName = CodeMirror.keyName(ev);
+        if ( !keyName ) { return; }
+        CodeMirror.lookupKey(
+            keyName,
+            cm.getOption('keyMap'),
+            function(command) {
+                if ( widgetCommandHandler(cm, command) ) {
+                    ev.preventDefault();
+                    ev.stopPropagation();
+                }
+            }
+        );
+    }
+
+    function searchWidgetInputHandler(cm) {
+        let state = getSearchState(cm);
+        if ( queryTextFromSearchWidget(cm) === state.queryText ) { return; }
+        if ( state.queryTimer !== null ) {
+            clearTimeout(state.queryTimer);
+        }
+        state.queryTimer = setTimeout(
+            () => {
+                state.queryTimer = null;
+                findCommit(cm, 0);
+            },
+            350
+        );
+    }
+
+    function searchWidgetClickHandler(cm, ev) {
+        var tcl = ev.target.classList;
+        if ( tcl.contains('cm-search-widget-up') ) {
+            findNext(cm, -1);
+        } else if ( tcl.contains('cm-search-widget-down') ) {
+            findNext(cm, 1);
+        }
+        if ( ev.target.localName !== 'input' ) {
+            ev.preventDefault();
+        } else {
+            ev.stopImmediatePropagation();
+        }
+    }
+
+    function queryTextFromSearchWidget(cm) {
+        return getSearchState(cm).widget.querySelector('input[type="search"]').value;
+    }
+
+    function queryTextToSearchWidget(cm, q) {
+        var input = getSearchState(cm).widget.querySelector('input[type="search"]');
+        if ( typeof q === 'string' && q !== input.value ) {
+            input.value = q;
+        }
+        input.setSelectionRange(0, input.value.length);
+        input.focus();
+    }
+
+    function SearchState(cm) {
+        this.query = null;
+        this.overlay = null;
+        this.panel = null;
+        const widgetParent =
+            document.querySelector('.cm-search-widget-template').cloneNode(true);
+        this.widget = widgetParent.children[0];
+        this.widget.addEventListener('keydown', searchWidgetKeydownHandler.bind(null, cm));
+        this.widget.addEventListener('input', searchWidgetInputHandler.bind(null, cm));
+        this.widget.addEventListener('mousedown', searchWidgetClickHandler.bind(null, cm));
+        if ( typeof cm.addPanel === 'function' ) {
+            this.panel = cm.addPanel(this.widget);
+        }
+        this.queryText = '';
+        this.queryTimer = null;
+    }
+
+    // We want the search widget to behave as if the focus was on the
+    // CodeMirror editor.
+
+    const reSearchCommands = /^(?:find|findNext|findPrev|newlineAndIndent)$/;
+
+    function widgetCommandHandler(cm, command) {
+        if ( reSearchCommands.test(command) === false ) { return false; }
+        var queryText = queryTextFromSearchWidget(cm);
+        if ( command === 'find' ) {
+            queryTextToSearchWidget(cm);
+            return true;
+        }
+        if ( queryText.length !== 0 ) {
+            findNext(cm, command === 'findPrev' ? -1 : 1);
+        }
+        return true;
+    }
+
+    function getSearchState(cm) {
+        return cm.state.search || (cm.state.search = new SearchState(cm));
+    }
+
+    function queryCaseInsensitive(query) {
+        return typeof query === "string" && query === query.toLowerCase();
+    }
+
+    function getSearchCursor(cm, query, pos) {
+        // Heuristic: if the query string is all lowercase, do a case insensitive search.
+        return cm.getSearchCursor(
+            query,
+            pos,
+            { caseFold: queryCaseInsensitive(query), multiline: false }
+        );
+    }
+
+    // https://github.com/uBlockOrigin/uBlock-issues/issues/658
+    //   Modified to backslash-escape ONLY widely-used control characters.
+    function parseString(string) {
+        return string.replace(/\\[nrt\\]/g, function(match) {
+            if (match === "\\n") return "\n";
+            if (match === "\\r") return "\r";
+            if (match === '\\t') return '\t';
+            if (match === '\\\\') return '\\';
+            return match;
+        });
+    }
+
+    function parseQuery(query) {
+        var isRE = query.match(/^\/(.*)\/([a-z]*)$/);
+        if (isRE) {
+            try { query = new RegExp(isRE[1], isRE[2].indexOf("i") === -1 ? "" : "i"); }
+            catch(e) {} // Not a regular expression after all, do a string search
+        } else {
+            query = parseString(query);
+        }
+        if (typeof query === "string" ? query === "" : query.test(""))
+            query = /x^/;
+        return query;
+    }
+
+    function startSearch(cm, state) {
+        state.query = parseQuery(state.queryText);
+        if ( state.overlay ) {
+            cm.removeOverlay(state.overlay, queryCaseInsensitive(state.query));
+        }
+        state.overlay = searchOverlay(state.query, queryCaseInsensitive(state.query));
+        cm.addOverlay(state.overlay);
+        if ( cm.showMatchesOnScrollbar ) {
+            if ( state.annotate ) {
+                state.annotate.clear();
+                state.annotate = null;
+            }
+            state.annotate = cm.showMatchesOnScrollbar(
+                state.query,
+                queryCaseInsensitive(state.query),
+                { multiline: false }
+            );
+            let count = state.annotate.matches.length;
+            state.widget
+                 .querySelector('.cm-search-widget-count > span:nth-of-type(2)')
+                 .textContent = count > 1000 ? '1000+' : count;
+            state.widget.setAttribute('data-query', state.queryText);
+            // Ensure the caret is visible
+            let input = state.widget.querySelector('.cm-search-widget-input > input');
+            input.selectionStart = input.selectionStart;
+        }
+    }
+
+    function findNext(cm, dir, callback) {
+        cm.operation(function() {
+            var state = getSearchState(cm);
+            if ( !state.query ) { return; }
+            var cursor = getSearchCursor(
+                cm,
+                state.query,
+                dir <= 0 ? cm.getCursor('from') : cm.getCursor('to')
+            );
+            let previous = dir < 0;
+            if (!cursor.find(previous)) {
+                cursor = getSearchCursor(
+                    cm,
+                    state.query,
+                    previous ? CodeMirror.Pos(cm.lastLine()) : CodeMirror.Pos(cm.firstLine(), 0)
+                );
+                if (!cursor.find(previous)) return;
+            }
+            cm.setSelection(cursor.from(), cursor.to());
+            cm.scrollIntoView({from: cursor.from(), to: cursor.to()}, 20);
+            if (callback) callback(cursor.from(), cursor.to());
+        });
+    }
+
+    function clearSearch(cm, hard) {
+        cm.operation(function() {
+            var state = getSearchState(cm);
+            if ( state.query ) {
+                state.query = state.queryText = null;
+            }
+            if ( state.overlay ) {
+                cm.removeOverlay(state.overlay);
+                state.overlay = null;
+            }
+            if ( state.annotate ) {
+                state.annotate.clear();
+                state.annotate = null;
+            }
+            state.widget.removeAttribute('data-query');
+            if ( hard ) {
+                state.panel.clear();
+                state.panel = null;
+                state.widget = null;
+                cm.state.search = null;
+            }
+        });
+    }
+
+    function findCommit(cm, dir) {
+        var state = getSearchState(cm);
+        if ( state.queryTimer !== null ) {
+            clearTimeout(state.queryTimer);
+            state.queryTimer = null;
+        }
+        var queryText = queryTextFromSearchWidget(cm);
+        if ( queryText === state.queryText ) { return; }
+        state.queryText = queryText;
+        if ( state.queryText === '' ) {
+            clearSearch(cm);
+        } else {
+            cm.operation(function() {
+                startSearch(cm, state);
+                findNext(cm, dir);
+            });
+        }
+    }
+
+    function findCommand(cm) {
+        var queryText = cm.getSelection() || undefined;
+        if ( !queryText ) {
+            var word = cm.findWordAt(cm.getCursor());
+            queryText = cm.getRange(word.anchor, word.head);
+            if ( /^\W|\W$/.test(queryText) ) {
+                queryText = undefined;
+            }
+            cm.setCursor(word.anchor);
+        }
+        queryTextToSearchWidget(cm, queryText);
+        findCommit(cm, 1);
+    }
+
+    function findNextCommand(cm) {
+        var state = getSearchState(cm);
+        if ( state.query ) { return findNext(cm, 1); }
+    }
+
+    function findPrevCommand(cm) {
+        var state = getSearchState(cm);
+        if ( state.query ) { return findNext(cm, -1); }
+    }
+
+    {
+        const searchWidgetTemplate =
+            '<div class="cm-search-widget-template" style="display:none;">' +
+              '<div class="cm-search-widget">' +
+                '<span class="fa-icon fa-icon-ro">search</span>&ensp;' +
+                '<span class="cm-search-widget-input">' +
+                  '<input type="search">' +
+                  '<span class="cm-search-widget-count">' +
+                    '<span><!-- future use --></span><span>0</span>' +
+                  '</span>' +
+                '</span>&ensp;' +
+                '<span class="cm-search-widget-up cm-search-widget-button fa-icon">angle-up</span>&ensp;' +
+                '<span class="cm-search-widget-down cm-search-widget-button fa-icon fa-icon-vflipped">angle-up</span>&ensp;' +
+                '<a class="fa-icon sourceURL" href>external-link</a>' +
+              '</div>' +
+            '</div>';
+        const domParser = new DOMParser();
+        const doc = domParser.parseFromString(searchWidgetTemplate, 'text/html');
+        const widgetTemplate = document.adoptNode(doc.body.firstElementChild);
+        document.body.appendChild(widgetTemplate);
+    }
+
+    CodeMirror.commands.find = findCommand;
+    CodeMirror.commands.findNext = findNextCommand;
+    CodeMirror.commands.findPrev = findPrevCommand;
+
+    CodeMirror.defineInitHook(function(cm) {
+        getSearchState(cm);
+    });
+});

src/js/console.js

@@ -0,0 +1,34 @@
+/*******************************************************************************
+
+    uMatrix - a browser extension to block requests.
+    Copyright (C) 2019-present Raymond Hill
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see {http://www.gnu.org/licenses/}.
+
+    Home: https://github.com/gorhill/uBlock
+*/
+
+'use strict';
+
+self.log = (function() {
+    const noopFunc = function() {};
+    const info = function(s) { console.log(`[uMatrix] ${s}`); };
+    return {
+        get verbosity( ) { return; },
+        set verbosity(level) {
+            this.info = console.info = level === 'info' ? info : noopFunc;
+        },
+        info: noopFunc,
+    };
+})();

src/js/contentscript-start.js

@@ -1,7 +1,7 @@
 /*******************************************************************************
 
     uMatrix - a browser extension to black/white list requests.
-    Copyright (C) 2017-2018 Raymond Hill
+    Copyright (C) 2017-present Raymond Hill
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -26,15 +26,15 @@
 
 // Injected into content pages
 
-(function() {
+(( ) => {
 
     if ( typeof vAPI !== 'object' ) { return; }
 
     vAPI.selfWorkerSrcReported = vAPI.selfWorkerSrcReported || false;
 
-    var reGoodWorkerSrc = /(?:child|worker)-src[^;,]+?'none'/;
+    const reGoodWorkerSrc = /(?:child|worker)-src[^;,]+?'none'/;
 
-    var handler = function(ev) {
+    const handler = function(ev) {
         if (
             ev.isTrusted !== true ||
             ev.originalPolicy.includes('report-uri about:blank') === false
@@ -69,28 +69,21 @@
             vAPI.selfWorkerSrcReported = true;
         }
 
-        vAPI.messaging.send(
-            'contentscript.js',
-            {
+        vAPI.messaging.send('contentscript.js', {
             what: 'securityPolicyViolation',
             directive: 'worker-src',
             blockedURI: ev.blockedURI,
             documentURI: ev.documentURI,
-                blocked: ev.disposition === 'enforce'
-            }
-        );
+            blocked: ev.disposition === 'enforce',
+        });
 
         return true;
     };
 
-    document.addEventListener(
-        'securitypolicyviolation',
-        function(ev) {
+    document.addEventListener('securitypolicyviolation', ev => {
         if ( !handler(ev) ) { return; }
         ev.stopPropagation();
         ev.preventDefault();
-        },
-        true
-    );
+    }, true);
 
 })();

src/js/contentscript.js

@@ -1,7 +1,7 @@
 /*******************************************************************************
 
     uMatrix - a browser extension to black/white list requests.
-    Copyright (C) 2014-2018 Raymond Hill
+    Copyright (C) 2014-present Raymond Hill
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -28,7 +28,7 @@
 
 // Injected into content pages
 
-(function() {
+(( ) => {
 
 /******************************************************************************/
 
@@ -42,9 +42,7 @@ if (
 }
 
 // This can also happen (for example if script injected into a `data:` URI doc)
-if ( !window.location ) {
-    return;
-}
+if ( !window.location ) { return; }
 
 // This can happen
 if ( typeof vAPI !== 'object' ) {
@@ -65,8 +63,8 @@ vAPI.contentscriptEndInjected = true;
 
 // Executed only once.
 
-(function() {
-    var localStorageHandler = function(mustRemove) {
+{
+    const localStorageHandler = function(mustRemove) {
         if ( mustRemove ) {
             window.localStorage.clear();
             window.sessionStorage.clear();
@@ -78,15 +76,17 @@ vAPI.contentscriptEndInjected = true;
     // to site data is disabled.
     // https://github.com/gorhill/httpswitchboard/issues/215
     try {
-        var hasLocalStorage =
+        const hasLocalStorage =
             window.localStorage && window.localStorage.length !== 0;
-        var hasSessionStorage =
+        const hasSessionStorage =
             window.sessionStorage && window.sessionStorage.length !== 0;
         if ( hasLocalStorage || hasSessionStorage ) {
             vAPI.messaging.send('contentscript.js', {
                 what: 'contentScriptHasLocalStorage',
-                originURL: window.location.origin
-            }, localStorageHandler);
+                originURL: window.location.origin,
+            }).then(response => {
+                localStorageHandler(response);
+            });
         }
 
         // TODO: indexedDB
@@ -105,41 +105,41 @@ vAPI.contentscriptEndInjected = true;
     }
     catch (e) {
     }
-})();
+}
 
 /******************************************************************************/
 /******************************************************************************/
 
 // https://github.com/gorhill/uMatrix/issues/45
 
-var collapser = (function() {
-    var resquestIdGenerator = 1,
+const collapser = (( ) => {
+    let resquestIdGenerator = 1,
         processTimer,
         toProcess = [],
         toFilter = [],
-        toCollapse = new Map(),
         cachedBlockedMap,
         cachedBlockedMapHash,
-        cachedBlockedMapTimer,
-        reURLPlaceholder = /\{\{url\}\}/g;
-    var src1stProps = {
+        cachedBlockedMapTimer;
+    const toCollapse = new Map();
+    const reURLPlaceholder = /\{\{url\}\}/g;
+    const src1stProps = {
         'embed': 'src',
         'frame': 'src',
         'iframe': 'src',
         'img': 'src',
         'object': 'data'
     };
-    var src2ndProps = {
+    const src2ndProps = {
         'img': 'srcset'
     };
-    var tagToTypeMap = {
+    const tagToTypeMap = {
         embed: 'media',
         frame: 'frame',
         iframe: 'frame',
         img: 'image',
         object: 'media'
     };
-    var cachedBlockedSetClear = function() {
+    const cachedBlockedSetClear = function() {
         cachedBlockedMap =
         cachedBlockedMapHash =
         cachedBlockedMapTimer = undefined;
@@ -147,13 +147,13 @@ var collapser = (function() {
 
     // https://github.com/chrisaljoudi/uBlock/issues/174
     //   Do not remove fragment from src URL
-    var onProcessed = function(response) {
+    const onProcessed = function(response) {
         if ( !response ) { // This happens if uBO is disabled or restarted.
             toCollapse.clear();
             return;
         }
 
-        var targets = toCollapse.get(response.id);
+        const targets = toCollapse.get(response.id);
         if ( targets === undefined ) { return; }
         toCollapse.delete(response.id);
         if ( cachedBlockedMapHash !== response.hash ) {
@@ -168,10 +168,10 @@ var collapser = (function() {
             return;
         }
 
-        let placeholders = response.placeholders;
+        const placeholders = response.placeholders;
 
-        for ( let target of targets ) {
-            let tag = target.localName;
+        for ( const target of targets ) {
+            const tag = target.localName;
             let prop = src1stProps[tag];
             if ( prop === undefined ) { continue; }
             let src = target[prop];
@@ -181,7 +181,7 @@ var collapser = (function() {
                 src = target[prop];
                 if ( typeof src !== 'string' || src.length === 0 ) { continue; }
             }
-            let collapsed = cachedBlockedMap.get(tagToTypeMap[tag] + ' ' + src);
+            const collapsed = cachedBlockedMap.get(tagToTypeMap[tag] + ' ' + src);
             if ( collapsed === undefined ) { continue; }
             if ( collapsed ) {
                 target.style.setProperty('display', 'none', 'important');
@@ -192,7 +192,7 @@ var collapser = (function() {
             case 'frame':
             case 'iframe':
                 if ( placeholders.frame !== true ) { break; }
-                let docurl =
+                const docurl =
                     'data:text/html,' +
                     encodeURIComponent(
                         placeholders.frameDocument.replace(
@@ -244,22 +244,23 @@ var collapser = (function() {
         }
     };
 
-    var send = function() {
+    const send = function() {
         processTimer = undefined;
         toCollapse.set(resquestIdGenerator, toProcess);
-        var msg = {
+        vAPI.messaging.send('contentscript.js', {
             what: 'lookupBlockedCollapsibles',
             id: resquestIdGenerator,
             toFilter: toFilter,
-            hash: cachedBlockedMapHash
-        };
-        vAPI.messaging.send('contentscript.js', msg, onProcessed);
+            hash: cachedBlockedMapHash,
+        }).then(response => {
+            onProcessed(response);
+        });
         toProcess = [];
         toFilter = [];
         resquestIdGenerator += 1;
     };
 
-    var process = function(delay) {
+    const process = function(delay) {
         if ( toProcess.length === 0 ) { return; }
         if ( delay === 0 ) {
             if ( processTimer !== undefined ) {
@@ -271,7 +272,7 @@ var collapser = (function() {
         }
     };
 
-    var add = function(target) {
+    const add = function(target) {
         toProcess.push(target);
     };
 
@@ -282,20 +283,20 @@ var collapser = (function() {
         }
     };
 
-    var iframeSourceModified = function(mutations) {
-        var i = mutations.length;
+    const iframeSourceModified = function(mutations) {
+        let i = mutations.length;
         while ( i-- ) {
             addIFrame(mutations[i].target, true);
         }
         process();
     };
-    var iframeSourceObserver;
-    var iframeSourceObserverOptions = {
+    let iframeSourceObserver;
+    const iframeSourceObserverOptions = {
         attributes: true,
-        attributeFilter: [ 'src' ]
+        attributeFilter: [ 'src' ],
     };
 
-    var addIFrame = function(iframe, dontObserve) {
+    const addIFrame = function(iframe, dontObserve) {
         // https://github.com/gorhill/uBlock/issues/162
         // Be prepared to deal with possible change of src attribute.
         if ( dontObserve !== true ) {
@@ -304,25 +305,24 @@ var collapser = (function() {
             }
             iframeSourceObserver.observe(iframe, iframeSourceObserverOptions);
         }
-        var src = iframe.src;
+        const src = iframe.src;
         if ( src === '' || typeof src !== 'string' ) { return; }
         if ( src.startsWith('http') === false ) { return; }
         toFilter.push({ type: 'frame', url: iframe.src });
         add(iframe);
     };
 
-    var addIFrames = function(iframes) {
-        var i = iframes.length;
+    const addIFrames = function(iframes) {
+        let i = iframes.length;
         while ( i-- ) {
             addIFrame(iframes[i]);
         }
     };
 
-    var addNodeList = function(nodeList) {
-        var node,
-            i = nodeList.length;
+    const addNodeList = function(nodeList) {
+        let i = nodeList.length;
         while ( i-- ) {
-            node = nodeList[i];
+            const node = nodeList[i];
             if ( node.nodeType !== 1 ) { continue; }
             if ( node.localName === 'iframe' || node.localName === 'frame' ) {
                 addIFrame(node);
@@ -333,7 +333,7 @@ var collapser = (function() {
         }
     };
 
-    var onResourceFailed = function(ev) {
+    const onResourceFailed = function(ev) {
         if ( tagToTypeMap[ev.target.localName] !== undefined ) {
             add(ev.target);
             process();
@@ -354,10 +354,10 @@ var collapser = (function() {
     });
 
     return {
-        addMany: addMany,
-        addIFrames: addIFrames,
-        addNodeList: addNodeList,
-        process: process
+        addMany,
+        addIFrames,
+        addNodeList,
+        process,
     };
 })();
 
@@ -368,16 +368,16 @@ var collapser = (function() {
 
 // Added node lists will be cumulated here before being processed
 
-(function() {
+(( ) => {
     // This fixes http://acid3.acidtests.org/
     if ( !document.body ) { return; }
 
-    var addedNodeLists = [];
-    var addedNodeListsTimer;
+    let addedNodeLists = [];
+    let addedNodeListsTimer;
 
-    var treeMutationObservedHandler = function() {
+    const treeMutationObservedHandler = function() {
         addedNodeListsTimer = undefined;
-        var i = addedNodeLists.length;
+        let i = addedNodeLists.length;
         while ( i-- ) {
             collapser.addNodeList(addedNodeLists[i]);
         }
@@ -387,11 +387,10 @@ var collapser = (function() {
 
     // https://github.com/gorhill/uBlock/issues/205
     // Do not handle added node directly from within mutation observer.
-    var treeMutationObservedHandlerAsync = function(mutations) {
-        var iMutation = mutations.length,
-            nodeList;
+    const treeMutationObservedHandlerAsync = function(mutations) {
+        let iMutation = mutations.length;
         while ( iMutation-- ) {
-            nodeList = mutations[iMutation].addedNodes;
+            const nodeList = mutations[iMutation].addedNodes;
             if ( nodeList.length !== 0 ) {
                 addedNodeLists.push(nodeList);
             }
@@ -402,7 +401,7 @@ var collapser = (function() {
     };
 
     // https://github.com/gorhill/httpswitchboard/issues/176
-    var treeObserver = new MutationObserver(treeMutationObservedHandlerAsync);
+    let treeObserver = new MutationObserver(treeMutationObservedHandlerAsync);
     treeObserver.observe(document.body, {
         childList: true,
         subtree: true
@@ -437,7 +436,7 @@ var collapser = (function() {
 // https://github.com/gorhill/uMatrix/issues/924
 //   Report inline styles.
 
-(function() {
+{
     if (
         document.querySelector('script:not([src])') !== null ||
         document.querySelector('a[href^="javascript:"]') !== null ||
@@ -446,7 +445,7 @@ var collapser = (function() {
         vAPI.messaging.send('contentscript.js', {
             what: 'securityPolicyViolation',
             directive: 'script-src',
-            documentURI: window.location.href
+            documentURI: window.location.href,
         });
     }
 
@@ -454,14 +453,14 @@ var collapser = (function() {
         vAPI.messaging.send('contentscript.js', {
             what: 'securityPolicyViolation',
             directive: 'style-src',
-            documentURI: window.location.href
+            documentURI: window.location.href,
         });
     }
 
     collapser.addMany(document.querySelectorAll('img'));
     collapser.addIFrames(document.querySelectorAll('iframe, frame'));
     collapser.process();
-})();
+}
 
 /******************************************************************************/
 /******************************************************************************/
@@ -471,23 +470,23 @@ var collapser = (function() {
 // https://github.com/gorhill/uMatrix/issues/232
 //   Force `display` property, Firefox is still affected by the issue.
 
-(function() {
-    var noscripts = document.querySelectorAll('noscript');
+(( ) => {
+    const noscripts = document.querySelectorAll('noscript');
     if ( noscripts.length === 0 ) { return; }
 
-    var redirectTimer,
-        reMetaContent = /^\s*(\d+)\s*;\s*url=(['"]?)([^'"]+)\2/i,
-        reSafeURL = /^https?:\/\//;
+    const reMetaContent = /^\s*(\d+)\s*;\s*url=(['"]?)([^'"]+)\2/i;
+    const reSafeURL = /^https?:\/\//;
+    let redirectTimer;
 
-    var autoRefresh = function(root) {
-        var meta = root.querySelector('meta[http-equiv="refresh"][content]');
+    const autoRefresh = function(root) {
+        const meta = root.querySelector('meta[http-equiv="refresh"][content]');
         if ( meta === null ) { return; }
-        var match = reMetaContent.exec(meta.getAttribute('content'));
+        const match = reMetaContent.exec(meta.getAttribute('content'));
         if ( match === null || match[3].trim() === '' ) { return; }
-        var url = new URL(match[3], document.baseURI);
+        const url = new URL(match[3], document.baseURI);
         if ( reSafeURL.test(url.href) === false ) { return; }
         redirectTimer = setTimeout(
-            function() {
+            ( ) => {
                 location.assign(url.href);
             },
             parseInt(match[1], 10) * 1000 + 1
@@ -495,29 +494,28 @@ var collapser = (function() {
         meta.parentNode.removeChild(meta);
     };
 
-    var morphNoscript = function(from) {
+    const morphNoscript = function(from) {
         if ( /^application\/(?:xhtml\+)?xml/.test(document.contentType) ) {
-            var to = document.createElement('span');
+            const to = document.createElement('span');
             while ( from.firstChild !== null ) {
                 to.appendChild(from.firstChild);
             }
             return to;
         }
-        var parser = new DOMParser();
-        var doc = parser.parseFromString(
+        const parser = new DOMParser();
+        const doc = parser.parseFromString(
             '<span>' + from.textContent + '</span>',
             'text/html'
         );
         return document.adoptNode(doc.querySelector('span'));
     };
 
-    var renderNoscriptTags = function(response) {
+    const renderNoscriptTags = function(response) {
         if ( response !== true ) { return; }
-        var parent, span;
         for ( var noscript of noscripts ) {
-            parent = noscript.parentNode;
+            const parent = noscript.parentNode;
             if ( parent === null ) { continue; }
-            span = morphNoscript(noscript);
+            const span = morphNoscript(noscript);
             span.style.setProperty('display', 'inline', 'important');
             if ( redirectTimer === undefined ) {
                 autoRefresh(span);
@@ -526,25 +524,23 @@ var collapser = (function() {
         }
     };
 
-    vAPI.messaging.send(
-        'contentscript.js',
-        { what: 'mustRenderNoscriptTags?' },
-        renderNoscriptTags
-    );
+    vAPI.messaging.send('contentscript.js', {
+        what: 'mustRenderNoscriptTags?',
+    }).then(response => {
+        renderNoscriptTags(response);
+    });
 })();
 
 /******************************************************************************/
 /******************************************************************************/
 
-vAPI.messaging.send(
-    'contentscript.js',
-    { what: 'shutdown?' },
-    function(response) {
+vAPI.messaging.send('contentscript.js', {
+    what: 'shutdown?',
+}).then(response => {
     if ( response === true ) {
         vAPI.shutdown.exec();
     }
-    }
-);
+});
 
 /******************************************************************************/
 /******************************************************************************/

src/js/cookies.js

@@ -33,28 +33,29 @@
 // Use cached-context approach rather than object-based approach, as details
 // of the implementation do not need to be visible
 
-µMatrix.cookieHunter = (function() {
+µMatrix.cookieHunter = (( ) => {
 
 /******************************************************************************/
 
-var µm = µMatrix;
+const µm = µMatrix;
 
-var recordPageCookiesQueue = new Map();
-var removeCookieQueue = new Set();
-var cookieDict = new Map();
-var cookieEntryJunkyard = [];
-var processRemoveQueuePeriod = 2 * 60 * 1000;
-var processCleanPeriod = 10 * 60 * 1000;
-var processPageRecordQueueTimer = null;
+const recordPageCookiesQueue = new Map();
+const removeCookieQueue = new Set();
+const cookieDict = new Map();
+const cookieEntryJunkyard = [];
+const processRemoveQueuePeriod = 2 * 60 * 1000;
+const processCleanPeriod = 10 * 60 * 1000;
+let processPageRecordQueueTimer = null;
 
 /******************************************************************************/
 
-var CookieEntry = function(cookie) {
+const CookieEntry = class {
+    constructor(cookie) {
         this.usedOn = new Set();
         this.init(cookie);
-};
+    }
 
-CookieEntry.prototype.init = function(cookie) {
+    init(cookie) {
         this.secure = cookie.secure;
         this.session = cookie.session;
         this.anySubdomain = cookie.domain.charAt(0) === '.';
@@ -66,11 +67,10 @@ CookieEntry.prototype.init = function(cookie) {
         this.tstamp = Date.now();
         this.usedOn.clear();
         return this;
-};
-
-// Release anything which may consume too much memory
+    }
 
-CookieEntry.prototype.dispose = function() {
+    // Reset any property which indirectly consumes memory
+    dispose() {
         this.hostname = '';
         this.domain = '';
         this.path = '';
@@ -78,13 +78,14 @@ CookieEntry.prototype.dispose = function() {
         this.value = '';
         this.usedOn.clear();
         return this;
+    }
 };
 
 /******************************************************************************/
 
-var addCookieToDict = function(cookie) {
-    var cookieKey = cookieKeyFromCookie(cookie),
-        cookieEntry = cookieDict.get(cookieKey);
+const addCookieToDict = function(cookie) {
+    const cookieKey = cookieKeyFromCookie(cookie);
+    let cookieEntry = cookieDict.get(cookieKey);
     if ( cookieEntry === undefined ) {
         cookieEntry = cookieEntryJunkyard.pop();
         if ( cookieEntry ) {
@@ -99,17 +100,8 @@ var addCookieToDict = function(cookie) {
 
 /******************************************************************************/
 
-var addCookiesToDict = function(cookies) {
-    var i = cookies.length;
-    while ( i-- ) {
-        addCookieToDict(cookies[i]);
-    }
-};
-
-/******************************************************************************/
-
-var removeCookieFromDict = function(cookieKey) {
-    var cookieEntry = cookieDict.get(cookieKey);
+const removeCookieFromDict = function(cookieKey) {
+    const cookieEntry = cookieDict.get(cookieKey);
     if ( cookieEntry === undefined ) { return false; }
     cookieDict.delete(cookieKey);
     if ( cookieEntryJunkyard.length < 25 ) {
@@ -120,7 +112,7 @@ var removeCookieFromDict = function(cookieKey) {
 
 /******************************************************************************/
 
-var cookieKeyBuilder = [
+const cookieKeyBuilder = [
     '', // 0 = scheme
     '://',
     '', // 2 = domain
@@ -132,8 +124,8 @@ var cookieKeyBuilder = [
     '}'
 ];
 
-var cookieKeyFromCookie = function(cookie) {
-    var cb = cookieKeyBuilder;
+const cookieKeyFromCookie = function(cookie) {
+    const cb = cookieKeyBuilder;
     cb[0] = cookie.secure ? 'https' : 'http';
     cb[2] = cookie.domain.charAt(0) === '.' ? cookie.domain.slice(1) : cookie.domain;
     cb[3] = cookie.path;
@@ -142,9 +134,9 @@ var cookieKeyFromCookie = function(cookie) {
     return cb.join('');
 };
 
-var cookieKeyFromCookieURL = function(url, type, name) {
-    var µmuri = µm.URI.set(url);
-    var cb = cookieKeyBuilder;
+const cookieKeyFromCookieURL = function(url, type, name) {
+    const µmuri = µm.URI.set(url);
+    const cb = cookieKeyBuilder;
     cb[0] = µmuri.scheme;
     cb[2] = µmuri.hostname;
     cb[3] = µmuri.path;
@@ -155,7 +147,7 @@ var cookieKeyFromCookieURL = function(url, type, name) {
 
 /******************************************************************************/
 
-var cookieURLFromCookieEntry = function(entry) {
+const cookieURLFromCookieEntry = function(entry) {
     if ( !entry ) {
         return '';
     }
@@ -164,13 +156,11 @@ var cookieURLFromCookieEntry = function(entry) {
 
 /******************************************************************************/
 
-var cookieMatchDomains = function(cookieKey, allHostnamesString) {
-    var cookieEntry = cookieDict.get(cookieKey);
+const cookieMatchDomains = function(cookieKey, allHostnamesString) {
+    const cookieEntry = cookieDict.get(cookieKey);
     if ( cookieEntry === undefined ) { return false; }
     if ( allHostnamesString.indexOf(' ' + cookieEntry.hostname + ' ') < 0 ) {
-        if ( !cookieEntry.anySubdomain ) {
-            return false;
-        }
+        if ( !cookieEntry.anySubdomain ) { return false; }
         if ( allHostnamesString.indexOf('.' + cookieEntry.hostname + ' ') < 0 ) {
             return false;
         }
@@ -182,7 +172,7 @@ var cookieMatchDomains = function(cookieKey, allHostnamesString) {
 
 // Look for cookies to record for a specific web page
 
-var recordPageCookiesAsync = function(pageStore) {
+const recordPageCookiesAsync = function(pageStore) {
     // Store the page stats objects so that it doesn't go away
     // before we handle the job.
     // rhill 2013-10-19: pageStore could be nil, for example, this can
@@ -195,17 +185,17 @@ var recordPageCookiesAsync = function(pageStore) {
 
 /******************************************************************************/
 
-var recordPageCookie = (function() {
-    let queue = new Map();
+const recordPageCookie = (( ) => {
+    const queue = new Map();
+    const cookieLogEntryBuilder = [ '', '{', '', '-cookie:', '', '}' ];
     let queueTimer;
-    let cookieLogEntryBuilder = [ '', '{', '', '-cookie:', '', '}' ];
 
-    let process = function() {
+    const process = function() {
         queueTimer = undefined;
-        for ( let qentry of queue ) {
-            let pageStore = qentry[0];
+        for ( const qentry of queue ) {
+            const pageStore = qentry[0];
             if ( pageStore.tabId === '' ) { continue; }
-            for ( let cookieKey of qentry[1] ) {
+            for ( const cookieKey of qentry[1] ) {
                 let cookieEntry = cookieDict.get(cookieKey);
                 if ( cookieEntry === undefined ) { continue; }
                 let blocked = µm.mustBlock(
@@ -221,22 +211,24 @@ var recordPageCookie = (function() {
                     cookieEntry.session ? 'session' : 'persistent';
                 cookieLogEntryBuilder[4] =
                     encodeURIComponent(cookieEntry.name);
-                let cookieURL = cookieLogEntryBuilder.join('');
+                const cookieURL = cookieLogEntryBuilder.join('');
                 pageStore.recordRequest('cookie', cookieURL, blocked);
-                µm.logger.writeOne({
-                    tabId: pageStore.tabId,
-                    srcHn: pageStore.pageHostname,
-                    desHn: cookieEntry.hostname,
-                    desURL: cookieURL,
-                    type: 'cookie',
-                    blocked
-                });
+                if ( µm.logger.enabled ) {
+                    µm.filteringContext
+                      .duplicate()
+                      .fromTabId(pageStore.tabId)
+                      .setType('cookie')
+                      .setURL(cookieURL)
+                      .setFilter(blocked)
+                      .setRealm('network')
+                      .toLogger();
+                }
                 cookieEntry.usedOn.add(pageStore.pageHostname);
                 if ( !blocked ) { continue; }
                 if ( µm.userSettings.deleteCookies ) {
                     removeCookieAsync(cookieKey);
                 }
-                µm.updateBadgeAsync(pageStore.tabId);
+                µm.updateToolbarIcon(pageStore.tabId);
             }
         }
         queue.clear();
@@ -260,27 +252,29 @@ var recordPageCookie = (function() {
 
 // Candidate for removal
 
-var removeCookieAsync = function(cookieKey) {
+const removeCookieAsync = function(cookieKey) {
     removeCookieQueue.add(cookieKey);
 };
 
 /******************************************************************************/
 
-var chromeCookieRemove = function(cookieEntry, name) {
-    var url = cookieURLFromCookieEntry(cookieEntry);
+const browserCookieRemove = function(cookieEntry, name) {
+    const url = cookieURLFromCookieEntry(cookieEntry);
     if ( url === '' ) { return; }
 
-    var sessionCookieKey = cookieKeyFromCookieURL(url, 'session', name);
-    var persistCookieKey = cookieKeyFromCookieURL(url, 'persistent', name);
-    var callback = function(details) {
-        var success = !!details;
-        var template = success ? i18nCookieDeleteSuccess : i18nCookieDeleteFailure;
+    const sessionCookieKey = cookieKeyFromCookieURL(url, 'session', name);
+    const persistCookieKey = cookieKeyFromCookieURL(url, 'persistent', name);
+
+    vAPI.cookies.remove({ url, name }).then(details => {
+        const success = !!details;
+        const template = success ? i18nCookieDeleteSuccess : i18nCookieDeleteFailure;
         if ( removeCookieFromDict(sessionCookieKey) ) {
             if ( success ) {
                 µm.cookieRemovedCounter += 1;
             }
             µm.logger.writeOne({
-                info: template.replace('{{value}}', sessionCookieKey)
+                realm: 'message',
+                text: template.replace('{{value}}', sessionCookieKey)
             });
         }
         if ( removeCookieFromDict(persistCookieKey) ) {
@@ -288,23 +282,22 @@ var chromeCookieRemove = function(cookieEntry, name) {
                 µm.cookieRemovedCounter += 1;
             }
             µm.logger.writeOne({
-                info: template.replace('{{value}}', persistCookieKey)
+                realm: 'message',
+                text: template.replace('{{value}}', persistCookieKey)
             });
         }
+    });
 };
 
-    vAPI.cookies.remove({ url: url, name: name }, callback);
-};
-
-var i18nCookieDeleteSuccess = vAPI.i18n('loggerEntryCookieDeleted');
-var i18nCookieDeleteFailure = vAPI.i18n('loggerEntryDeleteCookieError');
+const i18nCookieDeleteSuccess = vAPI.i18n('loggerEntryCookieDeleted');
+const i18nCookieDeleteFailure = vAPI.i18n('loggerEntryDeleteCookieError');
 
 /******************************************************************************/
 
-var processPageRecordQueue = function() {
+const processPageRecordQueue = function() {
     processPageRecordQueueTimer = null;
 
-    for ( var pageStore of recordPageCookiesQueue.values() ) {
+    for ( const pageStore of recordPageCookiesQueue.values() ) {
         findAndRecordPageCookies(pageStore);
     }
     recordPageCookiesQueue.clear();
@@ -314,39 +307,36 @@ var processPageRecordQueue = function() {
 
 // Effectively remove cookies.
 
-var processRemoveQueue = function() {
-    var userSettings = µm.userSettings;
-    var deleteCookies = userSettings.deleteCookies;
+const processRemoveQueue = function() {
+    const userSettings = µm.userSettings;
+    const deleteCookies = userSettings.deleteCookies;
 
     // Session cookies which timestamp is *after* tstampObsolete will
     // be left untouched
     // https://github.com/gorhill/httpswitchboard/issues/257
-    var tstampObsolete = userSettings.deleteUnusedSessionCookies ?
+    const tstampObsolete = userSettings.deleteUnusedSessionCookies ?
         Date.now() - userSettings.deleteUnusedSessionCookiesAfter * 60 * 1000 :
         0;
 
-    var srcHostnames;
-    var cookieEntry;
+    let srcHostnames;
 
-    for ( var cookieKey of removeCookieQueue ) {
+    for ( const cookieKey of removeCookieQueue ) {
         // rhill 2014-05-12: Apparently this can happen. I have to
         // investigate how (A session cookie has same name as a
         // persistent cookie?)
-        cookieEntry = cookieDict.get(cookieKey);
+        const cookieEntry = cookieDict.get(cookieKey);
         if ( cookieEntry === undefined ) { continue; }
 
         // Delete obsolete session cookies: enabled.
         if ( tstampObsolete !== 0 && cookieEntry.session ) {
             if ( cookieEntry.tstamp < tstampObsolete ) {
-                chromeCookieRemove(cookieEntry, cookieEntry.name);
+                browserCookieRemove(cookieEntry, cookieEntry.name);
                 continue;
             }
         }
 
         // Delete all blocked cookies: disabled.
-        if ( deleteCookies === false ) {
-            continue;
-        }
+        if ( deleteCookies === false ) { continue; }
 
         // Query scopes only if we are going to use them
         if ( srcHostnames === undefined ) {
@@ -357,7 +347,7 @@ var processRemoveQueue = function() {
         // happen that a cookie is blacklisted on one web page while
         // being whitelisted on another (because of per-page permissions).
         if ( canRemoveCookie(cookieKey, srcHostnames) ) {
-            chromeCookieRemove(cookieEntry, cookieEntry.name);
+            browserCookieRemove(cookieEntry, cookieEntry.name);
         }
     }
 
@@ -374,12 +364,12 @@ var processRemoveQueue = function() {
 // Remove only some of the cookies which are candidate for removal: who knows,
 // maybe a user has 1000s of cookies sitting in his browser...
 
-var processClean = function() {
-    var us = µm.userSettings;
+const processClean = function() {
+    const us = µm.userSettings;
     if ( us.deleteCookies || us.deleteUnusedSessionCookies ) {
-        var cookieKeys = Array.from(cookieDict.keys()),
-            len = cookieKeys.length,
-            step, offset, n;
+        const cookieKeys = Array.from(cookieDict.keys());
+        const len = cookieKeys.length;
+        let step, offset, n;
         if ( len > 25 ) {
             step = len / 25;
             offset = Math.floor(Math.random() * len);
@@ -389,7 +379,7 @@ var processClean = function() {
             offset = 0;
             n = len;
         }
-        var i = offset;
+        let i = offset;
         while ( n-- ) {
             removeCookieAsync(cookieKeys[Math.floor(i % len)]);
             i += step;
@@ -401,8 +391,8 @@ var processClean = function() {
 
 /******************************************************************************/
 
-var findAndRecordPageCookies = function(pageStore) {
-    for ( var cookieKey of cookieDict.keys() ) {
+const findAndRecordPageCookies = function(pageStore) {
+    for ( const cookieKey of cookieDict.keys() ) {
         if ( cookieMatchDomains(cookieKey, pageStore.allHostnamesString) ) {
             recordPageCookie(pageStore, cookieKey);
         }
@@ -411,14 +401,13 @@ var findAndRecordPageCookies = function(pageStore) {
 
 /******************************************************************************/
 
-var canRemoveCookie = function(cookieKey, srcHostnames) {
-    var cookieEntry = cookieDict.get(cookieKey);
+const canRemoveCookie = function(cookieKey, srcHostnames) {
+    const cookieEntry = cookieDict.get(cookieKey);
     if ( cookieEntry === undefined ) { return false; }
 
-    var cookieHostname = cookieEntry.hostname;
-    var srcHostname;
+    const cookieHostname = cookieEntry.hostname;
 
-    for ( srcHostname of cookieEntry.usedOn ) {
+    for ( const srcHostname of cookieEntry.usedOn ) {
         if ( µm.mustAllow(srcHostname, cookieHostname, 'cookie') ) {
             return false;
         }
@@ -427,21 +416,17 @@ var canRemoveCookie = function(cookieKey, srcHostnames) {
     // For example, if I am logged in into `github.com`, I do not want to be 
     // logged out just because I did not yet open a `github.com` page after 
     // re-starting the browser.
-    srcHostname = cookieHostname;
-    var pos;
+    let srcHostname = cookieHostname;
     for (;;) {
-        if ( srcHostnames.has(srcHostname) ) {
-            if ( µm.mustAllow(srcHostname, cookieHostname, 'cookie') ) {
+        if (
+            srcHostnames.has(srcHostname) &&
+            µm.mustAllow(srcHostname, cookieHostname, 'cookie')
+        ) {
             return false;
         }
-        }
-        if ( srcHostname === cookieEntry.domain ) {
-            break;
-        }
-        pos = srcHostname.indexOf('.');
-        if ( pos === -1 ) {
-            break;
-        }
+        if ( srcHostname === cookieEntry.domain ) { break; }
+        const pos = srcHostname.indexOf('.');
+        if ( pos === -1 ) { break; }
         srcHostname = srcHostname.slice(pos + 1);
     }
     return true;
@@ -454,27 +439,27 @@ var canRemoveCookie = function(cookieKey, srcHostnames) {
 // https://github.com/gorhill/httpswitchboard/issues/79
 //  If cookie value didn't change, no need to record.
 
-vAPI.cookies.onChanged = (function() {
-    let queue = new Map();
+vAPI.cookies.onChanged = (( ) => {
+    const queue = new Map();
     let queueTimer;
 
     // Go through all pages and update if needed, as one cookie can be used
     // by many web pages, so they need to be recorded for all these pages.
 
-    let process = function() {
+    const process = function() {
         queueTimer = undefined;
-        let now = Date.now();
-        let cookieKeys = [];
-        for ( let qentry of queue ) {
+        const now = Date.now();
+        const cookieKeys = [];
+        for ( const qentry of queue ) {
             if ( qentry[1] > now ) { continue; }
             if ( cookieDict.has(qentry[0]) === false ) { continue; }
             cookieKeys.push(qentry[0]);
             queue.delete(qentry[0]);
         }
         if ( cookieKeys.length !== 0 ) {
-            for ( let pageStore of µm.pageStores.values() ) {
-                let allHostnamesString = pageStore.allHostnamesString;
-                for ( let cookieKey of cookieKeys ) {
+            for ( const pageStore of µm.pageStores.values() ) {
+                const allHostnamesString = pageStore.allHostnamesString;
+                for ( const cookieKey of cookieKeys ) {
                     if ( cookieMatchDomains(cookieKey, allHostnamesString) ) {
                         recordPageCookie(pageStore, cookieKey);
                     }
@@ -487,7 +472,7 @@ vAPI.cookies.onChanged = (function() {
     };
 
     return function(cookie) {
-        let cookieKey = cookieKeyFromCookie(cookie);
+        const cookieKey = cookieKeyFromCookie(cookie);
         let cookieEntry = cookieDict.get(cookieKey);
         if ( cookieEntry === undefined ) {
             cookieEntry = addCookieToDict(cookie);
@@ -509,10 +494,11 @@ vAPI.cookies.onChanged = (function() {
 // Listen to any change in cookieland, we will update page stats accordingly.
 
 vAPI.cookies.onRemoved = function(cookie) {
-    var cookieKey = cookieKeyFromCookie(cookie);
+    const cookieKey = cookieKeyFromCookie(cookie);
     if ( removeCookieFromDict(cookieKey) ) {
         µm.logger.writeOne({
-            info: i18nCookieDeleteSuccess.replace('{{value}}', cookieKey),
+            realm: 'message',
+            text: i18nCookieDeleteSuccess.replace('{{value}}', cookieKey),
             prettify: 'cookie'
         });
     }
@@ -523,10 +509,11 @@ vAPI.cookies.onRemoved = function(cookie) {
 // Listen to any change in cookieland, we will update page stats accordingly.
 
 vAPI.cookies.onAllRemoved = function() {
-    for ( var cookieKey of cookieDict.keys() ) {
+    for ( const cookieKey of cookieDict.keys() ) {
         if ( removeCookieFromDict(cookieKey) ) {
             µm.logger.writeOne({
-                info: i18nCookieDeleteSuccess.replace('{{value}}', cookieKey),
+                realm: 'message',
+                text: i18nCookieDeleteSuccess.replace('{{value}}', cookieKey),
                 prettify: 'cookie'
             });
         }
@@ -535,7 +522,11 @@ vAPI.cookies.onAllRemoved = function() {
 
 /******************************************************************************/
 
-vAPI.cookies.getAll(addCookiesToDict);
+vAPI.cookies.getAll().then(cookies => {
+    for ( const cookie of cookies ) {
+        addCookieToDict(cookie);
+    }
+});
 vAPI.cookies.start();
 
 vAPI.setTimeout(processRemoveQueue, processRemoveQueuePeriod);

src/js/dashboard-common.js

@@ -19,22 +19,133 @@
     Home: https://github.com/gorhill/uMatrix
 */
 
-/******************************************************************************/
+/* global CodeMirror, uDom */
 
-uDom.onLoad(function() {
+'use strict';
 
 /******************************************************************************/
 
-// Open links in the proper window
-uDom('a').attr('target', '_blank');
-uDom('a[href*="dashboard.html"]').attr('target', '_parent');
-uDom('.whatisthis').on('click', function() {
-    uDom(this).parent()
-        .descendants('.whatisthis-expandable')
-        .toggleClass('whatisthis-expanded');
-});
+{
+// >>>>> start of local scope
 
+/******************************************************************************/
+
+self.uBlockDashboard = self.uBlockDashboard || {};
 
 /******************************************************************************/
 
+{
+    let grabFocusTimer;
+    let grabFocusTarget;
+
+    const grabFocus = function() {
+        grabFocusTarget.focus();
+        grabFocusTimer = grabFocusTarget = undefined;
+    };
+    const grabFocusAsync = function(cm) {
+        grabFocusTarget = cm;
+        if ( grabFocusTimer === undefined ) {
+            grabFocusTimer = vAPI.setTimeout(grabFocus, 1);
+        }
+    };
+
+    // https://github.com/gorhill/uBlock/issues/3646
+    const patchSelectAll = function(cm, details) {
+        var vp = cm.getViewport();
+        if ( details.ranges.length !== 1 ) { return; }
+        var range = details.ranges[0],
+            lineFrom = range.anchor.line,
+            lineTo = range.head.line;
+        if ( lineTo === lineFrom ) { return; }
+        if ( range.head.ch !== 0 ) { lineTo += 1; }
+        if ( lineFrom !== vp.from || lineTo !== vp.to ) { return; }
+        details.update([
+            {
+                anchor: { line: 0, ch: 0 },
+                head: { line: cm.lineCount(), ch: 0 }
+            }
+        ]);
+        grabFocusAsync(cm);
+    };
+
+    let lastGutterClick = 0;
+    let lastGutterLine = 0;
+
+    const onGutterClicked = function(cm, line) {
+        const delta = Date.now() - lastGutterClick;
+        if ( delta >= 500 || line !== lastGutterLine ) {
+            cm.setSelection(
+                { line: line, ch: 0 },
+                { line: line + 1, ch: 0 }
+            );
+            lastGutterClick = Date.now();
+            lastGutterLine = line;
+        } else {
+            cm.setSelection(
+                { line: 0, ch: 0 },
+                { line: cm.lineCount(), ch: 0 },
+                { scroll: false }
+            );
+            lastGutterClick = 0;
+        }
+        grabFocusAsync(cm);
+    };
+
+    let resizeTimer,
+        resizeObserver;
+    const resize = function(cm) {
+        resizeTimer = undefined;
+        const child = document.querySelector('.codeMirrorFillVertical');
+        if ( child === null ) { return; }
+        const prect = document.documentElement.getBoundingClientRect();
+        const crect = child.getBoundingClientRect();
+        const cssHeight = Math.floor(Math.max(prect.bottom - crect.top, 80)) + 'px';
+        if ( child.style.height === cssHeight ) { return; }
+        child.style.height = cssHeight;
+        // https://github.com/gorhill/uBlock/issues/3694
+        //   Need to call cm.refresh() when resizing occurs. However the
+        //   cursor position may end up outside the viewport, hence we also
+        //   call cm.scrollIntoView() to address this.
+        //   Reference: https://codemirror.net/doc/manual.html#api_sizing
+        if ( cm instanceof CodeMirror ) {
+            cm.refresh();
+            cm.scrollIntoView(null);
+        }
+    };
+    const resizeAsync = function(cm, delay) {
+        if ( resizeTimer !== undefined ) { return; }
+        resizeTimer = vAPI.setTimeout(
+            resize.bind(null, cm),
+            typeof delay === 'number' ? delay : 66
+        );
+    };
+
+    self.uBlockDashboard.patchCodeMirrorEditor = function(cm) {
+        if ( document.querySelector('.codeMirrorFillVertical') !== null ) {
+            const boundResizeAsync = resizeAsync.bind(null, cm);
+            window.addEventListener('resize', boundResizeAsync);
+            resizeObserver = new MutationObserver(boundResizeAsync);
+            resizeObserver.observe(document.querySelector('.body'), {
+                childList: true,
+                subtree: true
+            });
+            resizeAsync(cm, 1);
+        }
+        if ( cm.options.inputStyle === 'contenteditable' ) {
+            cm.on('beforeSelectionChange', patchSelectAll);
+        }
+        cm.on('gutterClick', onGutterClicked);
+    };
+}
+
+uDom('a').attr('target', '_blank');
+uDom('a[href*="dashboard.html"]').attr('target', '_parent');
+uDom('.whatisthis').on('click', ev => {
+    ev.target
+      .parentElement
+      .querySelector('.whatisthis-expandable')
+      .classList.toggle('whatisthis-expanded');
 });
+
+// <<<<< end of local scope
+}

src/js/dashboard.js

@@ -23,13 +23,14 @@
 
 'use strict';
 
-/******************************************************************************/
+{
+// >>>>> start of local scope
 
-(function() {
+/******************************************************************************/
 
-    var loadDashboardPanel = function(hash) {
-        var button = uDom(hash);
-        var url = button.attr('data-dashboard-panel-url');
+const loadDashboardPanel = function(hash) {
+    const button = uDom(hash);
+    const url = button.attr('data-dashboard-panel-url');
     uDom('iframe').attr('src', url);
     uDom('.tabButton').forEach(function(button){
         button.toggleClass(
@@ -39,17 +40,20 @@
     });
 };
 
-    var onTabClickHandler = function() {
+const onTabClickHandler = function() {
     loadDashboardPanel(window.location.hash);
 };
 
 uDom.onLoad(function() {
     window.addEventListener('hashchange', onTabClickHandler);
-        var hash = window.location.hash;
+    let hash = window.location.hash;
     if ( hash.length < 2 ) {
         hash = '#settings';
     }
     loadDashboardPanel(hash);
 });
 
-})();
+/******************************************************************************/
+
+// <<<<< end of local scope
+}

src/js/filtering-context.js

@@ -0,0 +1,310 @@
+/*******************************************************************************
+
+    uBlock Origin - a browser extension to block requests.
+    Copyright (C) 2018-present Raymond Hill
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see {http://www.gnu.org/licenses/}.
+
+    Home: https://github.com/gorhill/uBlock
+*/
+
+'use strict';
+
+/******************************************************************************/
+
+µMatrix.FilteringContext = function(other) {
+    if ( other instanceof µMatrix.FilteringContext ) {
+        return this.fromFilteringContext(other);
+    }
+    this.tstamp = 0;
+    this.realm = '';
+    this.id = undefined;
+    this.type = undefined;
+    this.url = undefined;
+    this.aliasURL = undefined;
+    this.hostname = undefined;
+    this.domain = undefined;
+    this.docId = undefined;
+    this.docOrigin = undefined;
+    this.docHostname = undefined;
+    this.docDomain = undefined;
+    this.tabId = undefined;
+    this.tabOrigin = undefined;
+    this.tabHostname = undefined;
+    this.tabDomain = undefined;
+    this.filter = undefined;
+};
+
+µMatrix.FilteringContext.prototype = {
+    requestTypeNormalizer: {
+        font          : 'css',
+        image         : 'image',
+        imageset      : 'image',
+        main_frame    : 'doc',
+        media         : 'media',
+        object        : 'media',
+        other         : 'other',
+        script        : 'script',
+        stylesheet    : 'css',
+        sub_frame     : 'frame',
+        websocket     : 'fetch',
+        xmlhttprequest: 'fetch'
+    },
+    fromTabId: function(tabId) {
+        const tabContext = µMatrix.tabContextManager.mustLookup(tabId);
+        this.tabOrigin = tabContext.origin;
+        this.tabHostname = tabContext.rootHostname;
+        this.tabDomain = tabContext.rootDomain;
+        this.tabId = tabContext.tabId;
+        return this;
+    },
+    // https://github.com/uBlockOrigin/uBlock-issues/issues/459
+    //   In case of a request for frame and if ever no context is specified,
+    //   assume the origin of the context is the same as the request itself.
+    fromWebrequestDetails: function(details) {
+        this.type = this.requestTypeNormalizer[details.type] || 'other';
+        const tabId = details.tabId;
+        if ( tabId > 0 && this.type === 'doc' ) {
+            µMatrix.tabContextManager.push(tabId, details.url);
+        }
+        this.fromTabId(tabId);
+        this.realm = '';
+        this.id = details.requestId;
+        this.setURL(details.url);
+        this.aliasURL = details.aliasURL || undefined;
+        this.docId = this.type !== 'frame'
+            ? details.frameId
+            : details.parentFrameId;
+        if ( this.tabId > 0 ) {
+            if ( this.docId === 0 ) {
+                this.docOrigin = this.tabOrigin;
+                this.docHostname = this.tabHostname;
+                this.docDomain = this.tabDomain;
+            } else if ( details.documentUrl !== undefined ) {
+                this.setDocOriginFromURL(details.documentUrl);
+            } else {
+                this.setDocOrigin(this.tabOrigin);
+            }
+        } else if ( details.documentUrl !== undefined ) {
+            const origin = this.originFromURI(
+                µMatrix.normalizePageURL(0, details.documentUrl)
+            );
+            this.setDocOrigin(origin).setTabOrigin(origin);
+        } else if (
+            this.docId === -1 ||
+            this.type === 'doc' ||
+            this.type === 'frame'
+        ) {
+            const origin = this.originFromURI(this.url);
+            this.setDocOrigin(origin).setTabOrigin(origin);
+        } else {
+            this.setDocOrigin(this.tabOrigin);
+        }
+        this.filter = undefined;
+        return this;
+    },
+    fromFilteringContext: function(other) {
+        this.realm = other.realm;
+        this.type = other.type;
+        this.url = other.url;
+        this.hostname = other.hostname;
+        this.domain = other.domain;
+        this.docId = other.docId;
+        this.docOrigin = other.docOrigin;
+        this.docHostname = other.docHostname;
+        this.docDomain = other.docDomain;
+        this.tabId = other.tabId;
+        this.tabOrigin = other.tabOrigin;
+        this.tabHostname = other.tabHostname;
+        this.tabDomain = other.tabDomain;
+        this.filter = undefined;
+        return this;
+    },
+    duplicate: function() {
+        return (new µMatrix.FilteringContext(this));
+    },
+    setRealm: function(a) {
+        this.realm = a;
+        return this;
+    },
+    setType: function(a) {
+        this.type = a;
+        return this;
+    },
+    setURL: function(a) {
+        if ( a !== this.url ) {
+            this.hostname = this.domain = undefined;
+            this.url = a;
+        }
+        return this;
+    },
+    getHostname: function() {
+        if ( this.hostname === undefined ) {
+            this.hostname = this.hostnameFromURI(this.url);
+        }
+        return this.hostname;
+    },
+    setHostname: function(a) {
+        if ( a !== this.hostname ) {
+            this.domain = undefined;
+            this.hostname = a;
+        }
+        return this;
+    },
+    getDomain: function() {
+        if ( this.domain === undefined ) {
+            this.domain = this.domainFromHostname(this.getHostname());
+        }
+        return this.domain;
+    },
+    setDomain: function(a) {
+        this.domain = a;
+        return this;
+    },
+    getDocOrigin: function() {
+        if ( this.docOrigin === undefined ) {
+            this.docOrigin = this.tabOrigin;
+        }
+        return this.docOrigin;
+    },
+    setDocOrigin: function(a) {
+        if ( a !== this.docOrigin ) {
+            this.docHostname = this.docDomain = undefined;
+            this.docOrigin = a;
+        }
+        return this;
+    },
+    setDocOriginFromURL: function(a) {
+        return this.setDocOrigin(this.originFromURI(a));
+    },
+    getDocHostname: function() {
+        if ( this.docHostname === undefined ) {
+            this.docHostname = this.hostnameFromURI(this.getDocOrigin());
+        }
+        return this.docHostname;
+    },
+    setDocHostname: function(a) {
+        if ( a !== this.docHostname ) {
+            this.docDomain = undefined;
+            this.docHostname = a;
+        }
+        return this;
+    },
+    getDocDomain: function() {
+        if ( this.docDomain === undefined ) {
+            this.docDomain = this.domainFromHostname(this.getDocHostname());
+        }
+        return this.docDomain;
+    },
+    setDocDomain: function(a) {
+        this.docDomain = a;
+        return this;
+    },
+    // The idea is to minimize the amout of work done to figure out whether
+    // the resource is 3rd-party to the document.
+    is3rdPartyToDoc: function() {
+        let docDomain = this.getDocDomain();
+        if ( docDomain === '' ) { docDomain = this.docHostname; }
+        if ( this.domain !== undefined && this.domain !== '' ) {
+            return this.domain !== docDomain;
+        }
+        const hostname = this.getHostname();
+        if ( hostname.endsWith(docDomain) === false ) { return true; }
+        const i = hostname.length - docDomain.length;
+        if ( i === 0 ) { return false; }
+        return hostname.charCodeAt(i - 1) !== 0x2E /* '.' */;
+    },
+    setTabId: function(a) {
+        this.tabId = a;
+        return this;
+    },
+    getTabOrigin: function() {
+        if ( this.tabOrigin === undefined ) {
+            const tabContext = µMatrix.tabContextManager.mustLookup(this.tabId);
+            this.tabOrigin = tabContext.origin;
+            this.tabHostname = tabContext.rootHostname;
+            this.tabDomain = tabContext.rootDomain;
+        }
+        return this.tabOrigin;
+    },
+    setTabOrigin: function(a) {
+        if ( a !== this.tabOrigin ) {
+            this.tabHostname = this.tabDomain = undefined;
+            this.tabOrigin = a;
+        }
+        return this;
+    },
+    setTabOriginFromURL: function(a) {
+        return this.setTabOrigin(this.originFromURI(a));
+    },
+    getTabHostname: function() {
+        if ( this.tabHostname === undefined ) {
+            this.tabHostname = this.hostnameFromURI(this.getTabOrigin());
+        }
+        return this.tabHostname;
+    },
+    setTabHostname: function(a) {
+        if ( a !== this.tabHostname ) {
+            this.tabDomain = undefined;
+            this.tabHostname = a;
+        }
+        return this;
+    },
+    getTabDomain: function() {
+        if ( this.tabDomain === undefined ) {
+            this.tabDomain = this.domainFromHostname(this.getTabHostname());
+        }
+        return this.tabDomain;
+    },
+    setTabDomain: function(a) {
+        this.docDomain = a;
+        return this;
+    },
+    // The idea is to minimize the amout of work done to figure out whether
+    // the resource is 3rd-party to the top document.
+    is3rdPartyToTab: function() {
+        let tabDomain = this.getTabDomain();
+        if ( tabDomain === '' ) { tabDomain = this.tabHostname; }
+        if ( this.domain !== undefined && this.domain !== '' ) {
+            return this.domain !== tabDomain;
+        }
+        const hostname = this.getHostname();
+        if ( hostname.endsWith(tabDomain) === false ) { return true; }
+        const i = hostname.length - tabDomain.length;
+        if ( i === 0 ) { return false; }
+        return hostname.charCodeAt(i - 1) !== 0x2E /* '.' */;
+    },
+    setFilter: function(a) {
+        this.filter = a;
+        return this;
+    },
+    toLogger: function() {
+        this.tstamp = Date.now();
+        if ( this.domain === undefined ) {
+            void this.getDomain();
+        }
+        if ( this.docDomain === undefined ) {
+            void this.getDocDomain();
+        }
+        if ( this.tabDomain === undefined ) {
+            void this.getTabDomain();
+        }
+        µMatrix.logger.writeOne(this);
+    },
+    originFromURI: µMatrix.URI.originFromURI,
+    hostnameFromURI: vAPI.hostnameFromURI,
+    domainFromHostname: vAPI.domainFromHostname,
+};
+
+µMatrix.filteringContext = new µMatrix.FilteringContext();

src/js/hntrie.js

@@ -0,0 +1,760 @@
+/*******************************************************************************
+
+    uBlock Origin - a browser extension to block requests.
+    Copyright (C) 2017-present Raymond Hill
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see {http://www.gnu.org/licenses/}.
+
+    Home: https://github.com/gorhill/uBlock
+*/
+
+/* globals WebAssembly */
+
+'use strict';
+
+// *****************************************************************************
+// start of local namespace
+
+{
+
+/******************************************************************************/
+
+// The directory from which the current script was fetched should
+// also contain the related WASM file. The script is fetched from
+// a trusted location, and consequently so will be the related
+// WASM file.
+let workingDir = '';
+{
+    const url = new URL(document.currentScript.src);
+    const match = /[^\/]+$/.exec(url.pathname);
+    if ( match !== null ) {
+        url.pathname = url.pathname.slice(0, match.index);
+    }
+    workingDir = url.href;
+}
+
+/*******************************************************************************
+
+  The original prototype was to develop an idea I had about using jump indices
+  in a TypedArray for quickly matching hostnames (or more generally strings)[1].
+  Once I had a working, un-optimized prototype, I realized I had ended up
+  with something formally named a "trie": <https://en.wikipedia.org/wiki/Trie>,
+  hence the name. I have no idea whether the implementation here or one
+  resembling it has been done elsewhere.
+
+  "HN" in HNTrieContainer stands for "HostName", because the trie is
+  specialized to deal with matching hostnames -- which is a bit more
+  complicated than matching plain strings.
+
+  For example, `www.abc.com` is deemed matching `abc.com`, because the former
+  is a subdomain of the latter. The opposite is of course not true.
+
+  The resulting read-only tries created as a result of using HNTrieContainer
+  are simply just typed arrays filled with integers. The matching algorithm is
+  just a matter of reading/comparing these integers, and further using them as
+  indices in the array as a way to move around in the trie.
+
+  [1] To solve <https://github.com/gorhill/uBlock/issues/3193>
+
+  Since this trie is specialized for matching hostnames, the stored
+  strings are reversed internally, because of hostname comparison logic:
+
+  Correct matching:
+    index      0123456
+               abc.com
+                     |
+           www.abc.com
+    index  01234567890
+
+  Incorrect matching (typically used for plain strings):
+    index  0123456
+           abc.com
+           |
+           www.abc.com
+    index  01234567890
+
+  ------------------------------------------------------------------------------
+
+  1st iteration:
+    - https://github.com/gorhill/uBlock/blob/ff58107dac3a32607f8113e39ed5015584506813/src/js/hntrie.js
+    - Suitable for small to medium set of hostnames
+    - One buffer per trie
+
+  2nd iteration: goal was to make matches() method wasm-able
+    - https://github.com/gorhill/uBlock/blob/c3b0fd31f64bd7ffecdd282fb1208fe07aac3eb0/src/js/hntrie.js
+    - Suitable for small to medium set of hostnames
+    - Distinct tries all share same buffer:
+      - Reduced memory footprint
+        - https://stackoverflow.com/questions/45803829/memory-overhead-of-typed-arrays-vs-strings/45808835#45808835
+      - Reusing needle character lookups for all tries
+        - This significantly reduce the number of String.charCodeAt() calls
+    - Slightly improved creation time
+
+  This is the 3rd iteration: goal was to make add() method wasm-able and
+  further improve memory/CPU efficiency.
+
+  This 3rd iteration has the following new traits:
+    - Suitable for small to large set of hostnames
+    - Support multiple trie containers (instanciable)
+    - Designed to hold large number of hostnames
+    - Hostnames can be added at any time (instead of all at once)
+      - This means pre-sorting is no longer a requirement
+    - The trie is always compact
+      - There is no longer a need for a `vacuum` method
+      - This makes the add() method wasm-able
+    - It can return the exact hostname which caused the match
+    - serializable/unserializable available for fast loading
+    - Distinct trie reference support the iteration protocol, thus allowing
+      to extract all the hostnames in the trie
+
+  Its primary purpose is to replace the use of Set() as a mean to hold
+  large number of hostnames (ex. FilterHostnameDict in static filtering
+  engine).
+
+  A HNTrieContainer is mostly a large buffer in which distinct but related
+  tries are stored. The memory layout of the buffer is as follow:
+
+    0-254: needle being processed
+      255: length of needle
+  256-259: offset to start of trie data section (=> trie0)
+  260-263: offset to end of trie data section (=> trie1)
+  264-267: offset to start of character data section  (=> char0)
+  268-271: offset to end of character data section (=> char1)
+      272: start of trie data section
+
+*/
+
+const PAGE_SIZE   = 65536;
+                                            // i32 /  i8
+const TRIE0_SLOT  = 256 >>> 2;              //  64 / 256
+const TRIE1_SLOT  = TRIE0_SLOT + 1;         //  65 / 260
+const CHAR0_SLOT  = TRIE0_SLOT + 2;         //  66 / 264
+const CHAR1_SLOT  = TRIE0_SLOT + 3;         //  67 / 268
+const TRIE0_START = TRIE0_SLOT + 4 << 2;    //       272
+
+const HNTrieContainer = class {
+
+    constructor(details) {
+        if ( details instanceof Object === false ) { details = {}; }
+        let len = (details.byteLength || 0) + PAGE_SIZE-1 & ~(PAGE_SIZE-1);
+        this.buf = new Uint8Array(Math.max(len, 131072));
+        this.buf32 = new Uint32Array(this.buf.buffer);
+        this.needle = '';
+        this.buf32[TRIE0_SLOT] = TRIE0_START;
+        this.buf32[TRIE1_SLOT] = this.buf32[TRIE0_SLOT];
+        this.buf32[CHAR0_SLOT] = details.char0 || 65536;
+        this.buf32[CHAR1_SLOT] = this.buf32[CHAR0_SLOT];
+        this.wasmInstancePromise = null;
+        this.wasmMemory = null;
+    }
+
+    //--------------------------------------------------------------------------
+    // Public methods
+    //--------------------------------------------------------------------------
+
+    reset() {
+        this.buf32[TRIE1_SLOT] = this.buf32[TRIE0_SLOT];
+        this.buf32[CHAR1_SLOT] = this.buf32[CHAR0_SLOT];
+    }
+
+    setNeedle(needle) {
+        if ( needle !== this.needle ) {
+            const buf = this.buf;
+            let i = needle.length;
+            if ( i > 255 ) { i = 255; }
+            buf[255] = i;
+            while ( i-- ) {
+                buf[i] = needle.charCodeAt(i);
+            }
+            this.needle = needle;
+        }
+        return this;
+    }
+
+    matchesJS(iroot) {
+        const buf32 = this.buf32;
+        const buf8 = this.buf;
+        const char0 = buf32[CHAR0_SLOT];
+        let ineedle = buf8[255];
+        let icell = buf32[iroot+0];
+        if ( icell === 0 ) { return -1; }
+        for (;;) {
+            if ( ineedle === 0 ) { return -1; }
+            ineedle -= 1;
+            let c = buf8[ineedle];
+            let v, i0;
+            // find first segment with a first-character match
+            for (;;) {
+                v = buf32[icell+2];
+                i0 = char0 + (v & 0x00FFFFFF);
+                if ( buf8[i0] === c ) { break; }
+                icell = buf32[icell+0];
+                if ( icell === 0 ) { return -1; }
+            }
+            // all characters in segment must match
+            let n = v >>> 24;
+            if ( n > 1 ) {
+                n -= 1;
+                if ( n > ineedle ) { return -1; }
+                i0 += 1;
+                const i1 = i0 + n;
+                do {
+                    ineedle -= 1;
+                    if ( buf8[i0] !== buf8[ineedle] ) { return -1; }
+                    i0 += 1;
+                } while ( i0 < i1 );
+            }
+            // next segment
+            icell = buf32[icell+1];
+            if ( icell === 0 ) { break; }
+            if ( buf32[icell+2] === 0 ) {
+                if ( ineedle === 0 || buf8[ineedle-1] === 0x2E ) {
+                    return ineedle;
+                }
+                icell = buf32[icell+1];
+            }
+        }
+        return ineedle === 0 || buf8[ineedle-1] === 0x2E ? ineedle : -1;
+    }
+
+    createOne(args) {
+        if ( Array.isArray(args) ) {
+            return new this.HNTrieRef(this, ...args);
+        }
+        // grow buffer if needed
+        if ( (this.buf32[CHAR0_SLOT] - this.buf32[TRIE1_SLOT]) < 12 ) {
+            this.growBuf(12, 0);
+        }
+        const iroot = this.buf32[TRIE1_SLOT] >>> 2;
+        this.buf32[TRIE1_SLOT] += 12;
+        this.buf32[iroot+0] = 0;
+        this.buf32[iroot+1] = 0;
+        this.buf32[iroot+2] = 0;
+        return new this.HNTrieRef(this, iroot, 0, 0);
+    }
+
+    compileOne(trieRef) {
+        return [
+            trieRef.iroot,
+            trieRef.addCount,
+            trieRef.addedCount,
+        ];
+    }
+
+    addJS(iroot) {
+        let lhnchar = this.buf[255];
+        if ( lhnchar === 0 ) { return 0; }
+        // grow buffer if needed
+        if (
+            (this.buf32[CHAR0_SLOT] - this.buf32[TRIE1_SLOT]) < 24 ||
+            (this.buf.length - this.buf32[CHAR1_SLOT]) < 256
+        ) {
+            this.growBuf(24, 256);
+        }
+        let icell = this.buf32[iroot+0];
+        // special case: first node in trie
+        if ( icell === 0 ) {
+            this.buf32[iroot+0] = this.addCell(0, 0, this.addSegment(lhnchar));
+            return 1;
+        }
+        //
+        const char0 = this.buf32[CHAR0_SLOT];
+        let inext;
+        // find a matching cell: move down
+        for (;;) {
+            const vseg = this.buf32[icell+2];
+            // skip boundary cells
+            if ( vseg === 0 ) {
+                // remainder is at label boundary? if yes, no need to add
+                // the rest since the shortest match is always reported
+                if ( this.buf[lhnchar-1] === 0x2E /* '.' */ ) { return -1; }
+                icell = this.buf32[icell+1];
+                continue;
+            }
+            let isegchar0 = char0 + (vseg & 0x00FFFFFF);
+            // if first character is no match, move to next descendant
+            if ( this.buf[isegchar0] !== this.buf[lhnchar-1] ) {
+                inext = this.buf32[icell+0];
+                if ( inext === 0 ) {
+                    this.buf32[icell+0] = this.addCell(0, 0, this.addSegment(lhnchar));
+                    return 1;
+                }
+                icell = inext;
+                continue;
+            }
+            // 1st character was tested
+            let isegchar = 1;
+            lhnchar -= 1;
+            // find 1st mismatch in rest of segment
+            const lsegchar = vseg >>> 24;
+            if ( lsegchar !== 1 ) {
+                for (;;) {
+                    if ( isegchar === lsegchar ) { break; }
+                    if ( lhnchar === 0 ) { break; }
+                    if ( this.buf[isegchar0+isegchar] !== this.buf[lhnchar-1] ) { break; }
+                    isegchar += 1;
+                    lhnchar -= 1;
+                }
+            }
+            // all segment characters matched
+            if ( isegchar === lsegchar ) {
+                inext = this.buf32[icell+1];
+                // needle remainder: no
+                if ( lhnchar === 0 ) {
+                    // boundary cell already present
+                    if ( inext === 0 || this.buf32[inext+2] === 0 ) { return 0; }
+                    // need boundary cell
+                    this.buf32[icell+1] = this.addCell(0, inext, 0);
+                }
+                // needle remainder: yes
+                else {
+                    if ( inext !== 0 ) {
+                        icell = inext;
+                        continue;
+                    }
+                    // remainder is at label boundary? if yes, no need to add
+                    // the rest since the shortest match is always reported
+                    if ( this.buf[lhnchar-1] === 0x2E /* '.' */ ) { return -1; }
+                    // boundary cell + needle remainder
+                    inext = this.addCell(0, 0, 0);
+                    this.buf32[icell+1] = inext;
+                    this.buf32[inext+1] = this.addCell(0, 0, this.addSegment(lhnchar));
+                }
+            }
+            // some segment characters matched
+            else {
+                // split current cell
+                isegchar0 -= char0;
+                this.buf32[icell+2] = isegchar << 24 | isegchar0;
+                inext = this.addCell(
+                    0,
+                    this.buf32[icell+1],
+                    lsegchar - isegchar << 24 | isegchar0 + isegchar
+                );
+                this.buf32[icell+1] = inext;
+                // needle remainder: no = need boundary cell
+                if ( lhnchar === 0 ) {
+                    this.buf32[icell+1] = this.addCell(0, inext, 0);
+                }
+                // needle remainder: yes = need new cell for remaining characters
+                else {
+                    this.buf32[inext+0] = this.addCell(0, 0, this.addSegment(lhnchar));
+                }
+            }
+            return 1;
+        }
+    }
+
+    optimize() {
+        this.shrinkBuf();
+        return {
+            byteLength: this.buf.byteLength,
+            char0: this.buf32[CHAR0_SLOT],
+        };
+    }
+
+    fromIterable(hostnames, add) {
+        if ( add === undefined ) { add = 'add'; }
+        const trieRef = this.createOne();
+        for ( const hn of hostnames ) {
+            trieRef[add](hn);
+        }
+        return trieRef;
+    }
+
+    serialize(encoder) {
+        if ( encoder instanceof Object ) {
+            return encoder.encode(
+                this.buf32.buffer,
+                this.buf32[CHAR1_SLOT]
+            );
+        }
+        return Array.from(
+            new Uint32Array(
+                this.buf32.buffer,
+                0,
+                this.buf32[CHAR1_SLOT] + 3 >>> 2
+            )
+        );
+    }
+
+    unserialize(selfie, decoder) {
+        this.needle = '';
+        const shouldDecode = typeof selfie === 'string';
+        let byteLength = shouldDecode
+            ? decoder.decodeSize(selfie)
+            : selfie.length << 2;
+        if ( byteLength === 0 ) { return false; }
+        byteLength = byteLength + PAGE_SIZE-1 & ~(PAGE_SIZE-1);
+        if ( this.wasmMemory !== null ) {
+            const pageCountBefore = this.buf.length >>> 16;
+            const pageCountAfter = byteLength >>> 16;
+            if ( pageCountAfter > pageCountBefore ) {
+                this.wasmMemory.grow(pageCountAfter - pageCountBefore);
+                this.buf = new Uint8Array(this.wasmMemory.buffer);
+                this.buf32 = new Uint32Array(this.buf.buffer);
+            }
+        } else if ( byteLength > this.buf.length ) {
+            this.buf = new Uint8Array(byteLength);
+            this.buf32 = new Uint32Array(this.buf.buffer);
+        }
+        if ( shouldDecode ) {
+            decoder.decode(selfie, this.buf.buffer);
+        } else {
+            this.buf32.set(selfie);
+        }
+        return true;
+    }
+
+    //--------------------------------------------------------------------------
+    // Private methods
+    //--------------------------------------------------------------------------
+
+    addCell(idown, iright, v) {
+        let icell = this.buf32[TRIE1_SLOT];
+        this.buf32[TRIE1_SLOT] = icell + 12;
+        icell >>>= 2;
+        this.buf32[icell+0] = idown;
+        this.buf32[icell+1] = iright;
+        this.buf32[icell+2] = v;
+        return icell;
+    }
+
+    addSegment(lsegchar) {
+        if ( lsegchar === 0 ) { return 0; }
+        let char1 = this.buf32[CHAR1_SLOT];
+        const isegchar = char1 - this.buf32[CHAR0_SLOT];
+        let i = lsegchar;
+        do {
+            this.buf[char1++] = this.buf[--i];
+        } while ( i !== 0 );
+        this.buf32[CHAR1_SLOT] = char1;
+        return (lsegchar << 24) | isegchar;
+    }
+
+    growBuf(trieGrow, charGrow) {
+        const char0 = Math.max(
+            (this.buf32[TRIE1_SLOT] + trieGrow + PAGE_SIZE-1) & ~(PAGE_SIZE-1),
+            this.buf32[CHAR0_SLOT]
+        );
+        const char1 = char0 + this.buf32[CHAR1_SLOT] - this.buf32[CHAR0_SLOT];
+        const bufLen = Math.max(
+            (char1 + charGrow + PAGE_SIZE-1) & ~(PAGE_SIZE-1),
+            this.buf.length
+        );
+        this.resizeBuf(bufLen, char0);
+    }
+
+    shrinkBuf() {
+        // Can't shrink WebAssembly.Memory
+        if ( this.wasmMemory !== null ) { return; }
+        const char0 = this.buf32[TRIE1_SLOT] + 24;
+        const char1 = char0 + this.buf32[CHAR1_SLOT] - this.buf32[CHAR0_SLOT];
+        const bufLen = char1 + 256;
+        this.resizeBuf(bufLen, char0);
+    }
+
+    resizeBuf(bufLen, char0) {
+        bufLen = bufLen + PAGE_SIZE-1 & ~(PAGE_SIZE-1);
+        if (
+            bufLen === this.buf.length &&
+            char0 === this.buf32[CHAR0_SLOT]
+        ) {
+            return;
+        }
+        const charDataLen = this.buf32[CHAR1_SLOT] - this.buf32[CHAR0_SLOT];
+        if ( this.wasmMemory !== null ) {
+            const pageCount = (bufLen >>> 16) - (this.buf.byteLength >>> 16);
+            if ( pageCount > 0 ) {
+                this.wasmMemory.grow(pageCount);
+                this.buf = new Uint8Array(this.wasmMemory.buffer);
+                this.buf32 = new Uint32Array(this.wasmMemory.buffer);
+            }
+        } else if ( bufLen !== this.buf.length ) {
+            const newBuf = new Uint8Array(bufLen);
+            newBuf.set(
+                new Uint8Array(
+                    this.buf.buffer,
+                    0,
+                    this.buf32[TRIE1_SLOT]
+                ),
+                0
+            );
+            newBuf.set(
+                new Uint8Array(
+                    this.buf.buffer,
+                    this.buf32[CHAR0_SLOT],
+                    charDataLen
+                ),
+                char0
+            );
+            this.buf = newBuf;
+            this.buf32 = new Uint32Array(this.buf.buffer);
+            this.buf32[CHAR0_SLOT] = char0;
+            this.buf32[CHAR1_SLOT] = char0 + charDataLen;
+        }
+        if ( char0 !== this.buf32[CHAR0_SLOT] ) {
+            this.buf.set(
+                new Uint8Array(
+                    this.buf.buffer,
+                    this.buf32[CHAR0_SLOT],
+                    charDataLen
+                ),
+                char0
+            );
+            this.buf32[CHAR0_SLOT] = char0;
+            this.buf32[CHAR1_SLOT] = char0 + charDataLen;
+        }
+    }
+
+    async initWASM() {
+        const module = await HNTrieContainer.enableWASM();
+        if ( module instanceof WebAssembly.Module === false ) { return false; }
+
+        if ( this.wasmInstancePromise !== null ) {
+            return true;
+        }
+        const memory = new WebAssembly.Memory({ initial: 2 });
+        this.wasmInstancePromise = WebAssembly.instantiate(
+            module,
+            {
+                imports: {
+                    memory,
+                    growBuf: this.growBuf.bind(this, 24, 256)
+                }
+            }
+        );
+        const instance = await this.wasmInstancePromise;
+        this.wasmMemory = memory;
+        const curPageCount = memory.buffer.byteLength >>> 16;
+        const newPageCount = this.buf.byteLength + PAGE_SIZE-1 >>> 16;
+        if ( newPageCount > curPageCount ) {
+            memory.grow(newPageCount - curPageCount);
+        }
+        const buf = new Uint8Array(memory.buffer);
+        buf.set(this.buf);
+        this.buf = buf;
+        this.buf32 = new Uint32Array(this.buf.buffer);
+        this.matches = this.matchesWASM = instance.exports.matches;
+        this.add = this.addWASM = instance.exports.add;
+        return true;
+    }
+
+    // Code below is to attempt to load a WASM module which implements:
+    //
+    // - HNTrieContainer.add()
+    // - HNTrieContainer.matches()
+    //
+    // The WASM module is entirely optional, the JS implementations will be
+    // used should the WASM module be unavailable for whatever reason.
+    static async enableWASM() {
+        if ( HNTrieContainer.wasmModulePromise === undefined ) {
+            HNTrieContainer.wasmModulePromise = null;
+            if (
+                typeof WebAssembly !== 'object' ||
+                typeof WebAssembly.compileStreaming !== 'function'
+            ) {
+                return null;
+            }
+            // Soft-dependency on vAPI so that the code here can be used
+            // outside of uMatrix (i.e. tests, benchmarks)
+            if ( typeof vAPI === 'object' && vAPI.canWASM !== true ) {
+                return null;
+            }
+            // The wasm module will work only if CPU is natively little-endian,
+            // as we use native uint32 array in our js code.
+            const uint32s = new Uint32Array(1);
+            const uint8s = new Uint8Array(uint32s.buffer);
+            uint32s[0] = 1;
+            if ( uint8s[0] !== 1 ) { return null; }
+
+            HNTrieContainer.wasmModulePromise = fetch(
+                workingDir + 'wasm/hntrie.wasm',
+                { mode: 'same-origin' }
+            ).then(
+                WebAssembly.compileStreaming
+            );
+        }
+
+        if ( HNTrieContainer.wasmModulePromise === null ) { return null; }
+
+        let module = null;
+        try {
+            module = await HNTrieContainer.wasmModulePromise;
+        } catch(ex) {
+            HNTrieContainer.wasmModulePromise = null;
+        }
+        return module;
+    }
+
+};
+
+HNTrieContainer.prototype.matches = HNTrieContainer.prototype.matchesJS;
+HNTrieContainer.prototype.matchesWASM = null;
+
+HNTrieContainer.prototype.add = HNTrieContainer.prototype.addJS;
+HNTrieContainer.prototype.addWASM = null;
+
+/*******************************************************************************
+
+    Class to hold reference to a specific trie
+
+*/
+
+HNTrieContainer.prototype.HNTrieRef = class {
+
+    constructor(container, iroot, addCount, addedCount) {
+        this.container = container;
+        this.iroot = iroot;
+        this.addCount = addCount;
+        this.addedCount = addedCount;
+        this.needle = '';
+        this.last = -1;
+    }
+
+    add(hn) {
+        this.addCount += 1;
+        if ( this.container.setNeedle(hn).add(this.iroot) > 0 ) {
+            this.last = -1;
+            this.needle = '';
+            this.addedCount += 1;
+            return true;
+        }
+        return false;
+    }
+
+    addJS(hn) {
+        this.addCount += 1;
+        if ( this.container.setNeedle(hn).addJS(this.iroot) > 0 ) {
+            this.last = -1;
+            this.needle = '';
+            this.addedCount += 1;
+            return true;
+        }
+        return false;
+    }
+
+    addWASM(hn) {
+        this.addCount += 1;
+        if ( this.container.setNeedle(hn).addWASM(this.iroot) > 0 ) {
+            this.last = -1;
+            this.needle = '';
+            this.addedCount += 1;
+            return true;
+        }
+        return false;
+    }
+
+    matches(needle) {
+        if ( needle !== this.needle ) {
+            this.needle = needle;
+            this.last = this.container.setNeedle(needle).matches(this.iroot);
+        }
+        return this.last;
+    }
+
+    matchesJS(needle) {
+        if ( needle !== this.needle ) {
+            this.needle = needle;
+            this.last = this.container.setNeedle(needle).matchesJS(this.iroot);
+        }
+        return this.last;
+    }
+
+    matchesWASM(needle) {
+        if ( needle !== this.needle ) {
+            this.needle = needle;
+            this.last = this.container.setNeedle(needle).matchesWASM(this.iroot);
+        }
+        return this.last;
+    }
+
+    dump() {
+        let hostnames = Array.from(this);
+        if ( String.prototype.padStart instanceof Function ) {
+            const maxlen = Math.min(
+                hostnames.reduce((maxlen, hn) => Math.max(maxlen, hn.length), 0),
+                64
+            );
+            hostnames = hostnames.map(hn => hn.padStart(maxlen));
+        }
+        for ( const hn of hostnames ) {
+            console.log(hn);
+        }
+    }
+
+    [Symbol.iterator]() {
+        return {
+            value: undefined,
+            done: false,
+            next: function() {
+                if ( this.icell === 0 ) {
+                    if ( this.forks.length === 0 ) {
+                        this.value = undefined;
+                        this.done = true;
+                        return this;
+                    }
+                    this.charPtr = this.forks.pop();
+                    this.icell = this.forks.pop();
+                }
+                for (;;) {
+                    const idown = this.container.buf32[this.icell+0];
+                    if ( idown !== 0 ) {
+                        this.forks.push(idown, this.charPtr);
+                    }
+                    const v = this.container.buf32[this.icell+2];
+                    let i0 = this.container.buf32[CHAR0_SLOT] + (v & 0x00FFFFFF);
+                    const i1 = i0 + (v >>> 24);
+                    while ( i0 < i1 ) {
+                        this.charPtr -= 1;
+                        this.charBuf[this.charPtr] = this.container.buf[i0];
+                        i0 += 1;
+                    }
+                    this.icell = this.container.buf32[this.icell+1];
+                    if ( this.icell === 0 ) {
+                        return this.toHostname();
+                    }
+                    if ( this.container.buf32[this.icell+2] === 0 ) {
+                        this.icell = this.container.buf32[this.icell+1];
+                        return this.toHostname();
+                    }
+                }
+            },
+            toHostname: function() {
+                this.value = this.textDecoder.decode(
+                    new Uint8Array(this.charBuf.buffer, this.charPtr)
+                );
+                return this;
+            },
+            container: this.container,
+            icell: this.iroot,
+            charBuf: new Uint8Array(256),
+            charPtr: 256,
+            forks: [],
+            textDecoder: new TextDecoder()
+        };
+    }
+};
+
+HNTrieContainer.prototype.HNTrieRef.prototype.last = -1;
+HNTrieContainer.prototype.HNTrieRef.prototype.needle = '';
+
+/******************************************************************************/
+
+µMatrix.HNTrieContainer = HNTrieContainer;
+
+// end of local namespace
+// *****************************************************************************
+
+}

src/js/hosts-files.js

@@ -25,18 +25,19 @@
 
 /******************************************************************************/
 
-(function() {
+{
+// >>>>> start of local scope
 
 /******************************************************************************/
 
-var listDetails = {},
-    lastUpdateTemplateString = vAPI.i18n('hostsFilesLastUpdate'),
-    hostsFilesSettingsHash,
-    reValidExternalList = /^[a-z-]+:\/\/\S*\/\S+$/m;
+const lastUpdateTemplateString = vAPI.i18n('hostsFilesLastUpdate');
+const reValidExternalList = /^[a-z-]+:\/\/\S*\/\S+$/m;
+let listDetails = {};
+let hostsFilesSettingsHash;
 
 /******************************************************************************/
 
-vAPI.messaging.addListener(function onMessage(msg) {
+vAPI.broadcastListener.add(msg => {
     switch ( msg.what ) {
     case 'assetUpdated':
         updateAssetStatus(msg);
@@ -58,27 +59,27 @@ vAPI.messaging.addListener(function onMessage(msg) {
 
 /******************************************************************************/
 
-var renderNumber = function(value) {
+const renderNumber = function(value) {
     return value.toLocaleString();
 };
 
 /******************************************************************************/
 
-var renderHostsFiles = function(soft) {
-    var listEntryTemplate = uDom('#templates .listEntry'),
-        listStatsTemplate = vAPI.i18n('hostsFilesPerFileStats'),
-        renderElapsedTimeToString = vAPI.i18n.renderElapsedTimeToString,
-        reExternalHostFile = /^https?:/;
+const renderHostsFiles = function(soft) {
+    const listEntryTemplate = uDom('#templates .listEntry');
+    const listStatsTemplate = vAPI.i18n('hostsFilesPerFileStats');
+    const renderElapsedTimeToString = vAPI.i18n.renderElapsedTimeToString;
+    const reExternalHostFile = /^https?:/;
 
     // Assemble a pretty list name if possible
-    var listNameFromListKey = function(collection, listKey) {
+    const listNameFromListKey = function(collection, listKey) {
         let list = collection.get(listKey);
         return list && list.title || listKey;
     };
 
-    var liFromListEntry = function(collection, listKey, li) {
-        var entry = collection.get(listKey),
-            elem;
+    const liFromListEntry = function(collection, listKey, li) {
+        const entry = collection.get(listKey);
+        let elem;
         if ( !li ) {
             li = listEntryTemplate.clone().nodeAt(0);
         }
@@ -106,7 +107,7 @@ var renderHostsFiles = function(soft) {
             elem.checked = entry.selected === true;
         }
         elem = li.querySelector('span.counts');
-        var text = '';
+        let text = '';
         if ( !isNaN(+entry.entryUsedCount) && !isNaN(+entry.entryCount) ) {
             text = listStatsTemplate
                 .replace('{{used}}', renderNumber(entry.selected ? entry.entryUsedCount : 0))
@@ -114,8 +115,8 @@ var renderHostsFiles = function(soft) {
         }
         elem.textContent = text;
         // https://github.com/chrisaljoudi/uBlock/issues/104
-        var asset = listDetails.cache[listKey] || {};
-        var remoteURL = asset.remoteURL;
+        const asset = listDetails.cache[listKey] || {};
+        const remoteURL = asset.remoteURL;
         li.classList.toggle(
             'unsecure',
             typeof remoteURL === 'string' && remoteURL.lastIndexOf('http:', 0) === 0
@@ -132,50 +133,50 @@ var renderHostsFiles = function(soft) {
         li.classList.remove('discard');
         return li;
     };
-    var onRenderAssetFiles = function(collection, listSelector) {
+    const onRenderAssetFiles = function(collection, listSelector) {
         // Incremental rendering: this will allow us to easily discard unused
         // DOM list entries.
         uDom(listSelector + ' .listEntry:not(.notAnAsset)').addClass('discard');
 
-        var assetKeys = Array.from(collection.keys());
+        const assetKeys = Array.from(collection.keys());
 
         // Sort works this way:
         // - Send /^https?:/ items at the end (custom hosts file URL)
         assetKeys.sort(function(a, b) {
-            let ea = collection.get(a),
-                eb = collection.get(b);
+            const ea = collection.get(a);
+            const eb = collection.get(b);
             if ( ea.submitter !== eb.submitter ) {
                 return ea.submitter !== 'user' ? -1 : 1;
             }
-            let ta = ea.title || a,
-                tb = eb.title || b;
+            const ta = ea.title || a;
+            const tb = eb.title || b;
             if ( reExternalHostFile.test(ta) === reExternalHostFile.test(tb) ) {
                 return ta.localeCompare(tb);
             }
             return reExternalHostFile.test(tb) ? -1 : 1;
         });
 
-        let ulList = document.querySelector(listSelector),
-            liLast = ulList.querySelector('.notAnAsset');
+        const ulList = document.querySelector(listSelector);
+        const liLast = ulList.querySelector('.notAnAsset');
 
         for ( let i = 0; i < assetKeys.length; i++ ) {
-            let liReuse = i < ulList.childElementCount ?
-                ulList.children[i] :
-                null;
+            let liReuse = i < ulList.childElementCount
+                ? ulList.children[i]
+                : null;
             if (
                 liReuse !== null &&
                 liReuse.classList.contains('notAnAsset')
             ) {
                 liReuse = null;
             }
-            let liEntry = liFromListEntry(collection, assetKeys[i], liReuse);
+            const liEntry = liFromListEntry(collection, assetKeys[i], liReuse);
             if ( liEntry.parentElement === null ) {
                 ulList.insertBefore(liEntry, liLast);
             }
         }
     };
 
-    var onAssetDataReceived = function(details) {
+    const onAssetDataReceived = function(details) {
         // Preprocess.
         details.hosts = new Map(details.hosts);
         details.recipes = new Map(details.recipes);
@@ -213,16 +214,16 @@ var renderHostsFiles = function(soft) {
         renderWidgets();
     };
 
-    vAPI.messaging.send(
-        'hosts-files.js',
-        { what: 'getAssets' },
-        onAssetDataReceived
-    );
+    vAPI.messaging.send('dashboard', {
+        what: 'getAssets',
+    }).then(details => {
+        onAssetDataReceived(details);
+    });
 };
 
 /******************************************************************************/
 
-var renderWidgets = function() {
+const renderWidgets = function() {
     uDom('#buttonUpdate').toggleClass('disabled', document.querySelector('body:not(.updating) .assets .listEntry.obsolete > input[type="checkbox"]:checked') === null);
     uDom('#buttonPurgeAll').toggleClass('disabled', document.querySelector('.assets .listEntry.cached') === null);
     uDom('#buttonApply').toggleClass('disabled', hostsFilesSettingsHash === hashFromCurrentFromSettings());
@@ -230,8 +231,8 @@ var renderWidgets = function() {
 
 /******************************************************************************/
 
-var updateAssetStatus = function(details) {
-    var li = document.querySelector('.assets .listEntry[data-listkey="' + details.key + '"]');
+const updateAssetStatus = function(details) {
+    const li = document.querySelector('.assets .listEntry[data-listkey="' + details.key + '"]');
     if ( li === null ) { return; }
     li.classList.toggle('failed', !!details.failed);
     li.classList.toggle('obsolete', !details.cached);
@@ -255,12 +256,12 @@ var updateAssetStatus = function(details) {
 
 **/
 
-var hashFromCurrentFromSettings = function() {
-    let listHash = [],
-        listEntries = document.querySelectorAll(
+const hashFromCurrentFromSettings = function() {
+    const listHash = [];
+    const listEntries = document.querySelectorAll(
         '.assets .listEntry[data-listkey]:not(.toRemove)'
     );
-    for ( let liEntry of listEntries ) {
+    for ( const liEntry of listEntries ) {
         if ( liEntry.querySelector('input[type="checkbox"]:checked') !== null ) {
             listHash.push(liEntry.getAttribute('data-listkey'));
         }
@@ -289,7 +290,7 @@ var hashFromCurrentFromSettings = function() {
 
 /******************************************************************************/
 
-var textFromTextarea = function(textarea) {
+const textFromTextarea = function(textarea) {
     if ( typeof textarea === 'string' ) {
         textarea = document.querySelector(textarea);
     }
@@ -298,15 +299,15 @@ var textFromTextarea = function(textarea) {
 
 /******************************************************************************/
 
-var onHostsFilesSettingsChanged = function() {
+const onHostsFilesSettingsChanged = function() {
     renderWidgets();
 };
 
 /******************************************************************************/
 
-var onRemoveExternalAsset = function(ev) {
-    var liEntry = uDom(this).ancestors('[data-listkey]'),
-        listKey = liEntry.attr('data-listkey');
+const onRemoveExternalAsset = function(ev) {
+    const liEntry = uDom(this).ancestors('[data-listkey]');
+    const listKey = liEntry.attr('data-listkey');
     if ( listKey ) {
         liEntry.toggleClass('toRemove');
         renderWidgets();
@@ -316,13 +317,16 @@ var onRemoveExternalAsset = function(ev) {
 
 /******************************************************************************/
 
-var onPurgeClicked = function() {
-    var button = uDom(this),
-        liEntry = button.ancestors('[data-listkey]'),
-        listKey = liEntry.attr('data-listkey');
+const onPurgeClicked = function(ev) {
+    const button = uDom(ev.target);
+    const liEntry = button.ancestors('[data-listkey]');
+    const listKey = liEntry.attr('data-listkey');
     if ( !listKey ) { return; }
 
-    vAPI.messaging.send('hosts-files.js', { what: 'purgeCache', assetKey: listKey });
+    vAPI.messaging.send('dashboard', {
+        what: 'purgeCache',
+        assetKey: listKey,
+    });
     liEntry.addClass('obsolete');
     liEntry.removeClass('cached');
 
@@ -333,9 +337,9 @@ var onPurgeClicked = function() {
 
 /******************************************************************************/
 
-var selectAssets = function(callback) {
-    var prepareChanges = function(listSelector) {
-        var out = {
+const selectAssets = function() {
+    const prepareChanges = function(listSelector) {
+        const out = {
             toSelect: [],
             toImport: '',
             toRemove: [],
@@ -345,13 +349,13 @@ var selectAssets = function(callback) {
             }
         };
 
-        let root = document.querySelector(listSelector);
+        const root = document.querySelector(listSelector);
 
         // Lists to select or remove
-        let liEntries = root.querySelectorAll(
+        const liEntries = root.querySelectorAll(
             '.listEntry[data-listkey]:not(.notAnAsset)'
         );
-        for ( let liEntry of liEntries ) {
+        for ( const liEntry of liEntries ) {
             if ( liEntry.classList.contains('toRemove') ) {
                 out.toRemove.push(liEntry.getAttribute('data-listkey'));
             } else if ( liEntry.querySelector('input[type="checkbox"]:checked') ) {
@@ -360,11 +364,11 @@ var selectAssets = function(callback) {
         }
 
         // External hosts files to import
-        let input = root.querySelector(
+        const input = root.querySelector(
             '.toImport > input[type="checkbox"]:checked'
         );
         if ( input !== null ) {
-            let textarea = root.querySelector('.toImport textarea');
+            const textarea = root.querySelector('.toImport textarea');
             out.toImport = textarea.value.trim();
             textarea.value = '';
             input.checked = false;
@@ -379,29 +383,26 @@ var selectAssets = function(callback) {
         return out;
     };
 
-    vAPI.messaging.send(
-        'hosts-files.js',
-        {
+    hostsFilesSettingsHash = hashFromCurrentFromSettings();
+
+    return vAPI.messaging.send('dashboard', {
         what: 'selectAssets',
         hosts: prepareChanges('#hosts'),
-            recipes: prepareChanges('#recipes')
-        },
-        callback
-    );
-
-    hostsFilesSettingsHash = hashFromCurrentFromSettings();
+        recipes: prepareChanges('#recipes'),
+    });
 };
 
 /******************************************************************************/
 
-var buttonApplyHandler = function() {
+const buttonApplyHandler = function() {
     uDom('#buttonApply').removeClass('enabled');
-    selectAssets(function(response) {
-        if ( response && response.hostsChanged ) {
-            vAPI.messaging.send('hosts-files.js', { what: 'reloadHostsFiles' });
+    selectAssets().then(response => {
+        if ( response instanceof Object === false ) { return; }
+        if ( response.hostsChanged ) {
+            vAPI.messaging.send('dashboard', { what: 'reloadHostsFiles' });
         }
-        if ( response && response.recipesChanged ) {
-            vAPI.messaging.send('hosts-files.js', { what: 'reloadRecipeFiles' });
+        if ( response.recipesChanged ) {
+            vAPI.messaging.send('dashboard', { what: 'reloadRecipeFiles' });
         }
     });
     renderWidgets();
@@ -409,11 +410,11 @@ var buttonApplyHandler = function() {
 
 /******************************************************************************/
 
-var buttonUpdateHandler = function() {
+const buttonUpdateHandler = function() {
     uDom('#buttonUpdate').removeClass('enabled');
-    selectAssets(function() {
+    selectAssets().then(( ) => {
         document.body.classList.add('updating');
-        vAPI.messaging.send('hosts-files.js', { what: 'forceUpdateAssets' });
+        vAPI.messaging.send('dashboard', { what: 'forceUpdateAssets' });
         renderWidgets();
     });
     renderWidgets();
@@ -421,28 +422,23 @@ var buttonUpdateHandler = function() {
 
 /******************************************************************************/
 
-var buttonPurgeAllHandler = function() {
+const buttonPurgeAllHandler = function() {
     uDom('#buttonPurgeAll').removeClass('enabled');
-    vAPI.messaging.send(
-        'hosts-files.js',
-        { what: 'purgeAllCaches' },
-        function() {
+    vAPI.messaging.send('dashboard', {
+        what: 'purgeAllCaches',
+    }).then(( ) => {
         renderHostsFiles(true);
-        }
-    );
+    });
 };
 
 /******************************************************************************/
 
-var autoUpdateCheckboxChanged = function() {
-    vAPI.messaging.send(
-        'hosts-files.js',
-        {
+const autoUpdateCheckboxChanged = function(ev) {
+    vAPI.messaging.send('dashboard', {
         what: 'userSettings',
         name: 'autoUpdate',
-            value: this.checked
-        }
-    );
+        value: ev.target.checked,
+    });
 };
 
 /******************************************************************************/
@@ -460,5 +456,5 @@ renderHostsFiles();
 
 /******************************************************************************/
 
-})();
-
+// <<<<< end of local scope
+}

src/js/httpsb.js

@@ -19,14 +19,12 @@
     Home: https://github.com/gorhill/uMatrix
 */
 
-/* global chrome, µMatrix */
-
 'use strict';
 
 /******************************************************************************/
 
-(function() {
-    var µm = µMatrix;
+{
+    const µm = µMatrix;
     µm.pMatrix = new µm.Matrix();
     µm.pMatrix.setSwitch('matrix-off', 'about-scheme', 1);
     µm.pMatrix.setSwitch('matrix-off', 'chrome-extension-scheme', 1);
@@ -42,6 +40,7 @@
     // Global rules
     µm.pMatrix.setSwitch('referrer-spoof', '*', 1);
     µm.pMatrix.setSwitch('noscript-spoof', '*', 1);
+    µm.pMatrix.setSwitch('cname-reveal', '*', 1);
     µm.pMatrix.setCell('*', '*', '*', µm.Matrix.Red);
     µm.pMatrix.setCell('*', '*', 'css', µm.Matrix.Green);
     µm.pMatrix.setCell('*', '*', 'image', µm.Matrix.Green);
@@ -52,7 +51,7 @@
 
     µm.tMatrix = new µm.Matrix();
     µm.tMatrix.assign(µm.pMatrix);
-})();
+}
 
 /******************************************************************************/
 

src/js/i18n.js

@@ -19,16 +19,15 @@
     Home: https://github.com/gorhill/uMatrix
 */
 
-/* global vAPI, uDom */
+'use strict';
 
 /******************************************************************************/
 
 // This file should always be included at the end of the `body` tag, so as
 // to ensure all i18n targets are already loaded.
 
-(function() {
-
-'use strict';
+{
+// >>>>> start of local scope
 
 /******************************************************************************/
 
@@ -41,28 +40,18 @@
 //   No HTML entities are allowed, there is code to handle existing HTML
 //   entities already present in translation files until they are all gone.
 
-var reSafeTags = /^([\s\S]*?)<(b|blockquote|code|em|i|kbd|span|sup)>(.+?)<\/\2>([\s\S]*)$/,
-    reSafeInput = /^([\s\S]*?)<(input type="[^"]+")>(.*?)([\s\S]*)$/,
-    reInput = /^input type=(['"])([a-z]+)\1$/,
-    reSafeLink = /^([\s\S]*?)<(a href=['"]https?:\/\/[^'" <>]+['"])>(.+?)<\/a>([\s\S]*)$/,
-    reLink = /^a href=(['"])(https?:\/\/[^'"]+)\1$/;
+const reSafeTags = /^([\s\S]*?)<(b|code|em|i|span)>(.+?)<\/\2>([\s\S]*)$/;
+const reSafeLink = /^([\s\S]*?)<(a href=['"]https:\/\/[^'" <>]+['"])>(.+?)<\/a>([\s\S]*)$/;
+const reLink = /^a href=(['"])(https:\/\/[^'"]+)\1$/;
 
-var safeTextToTagNode = function(text) {
-    var matches, node;
+const safeTextToTagNode = function(text) {
     if ( text.lastIndexOf('a ', 0) === 0 ) {
-        matches = reLink.exec(text);
+        const matches = reLink.exec(text);
         if ( matches === null ) { return null; }
-        node = document.createElement('a');
+        const node = document.createElement('a');
         node.setAttribute('href', matches[2]);
         return node;
     }
-    if ( text.lastIndexOf('input ', 0) === 0 ) {
-        matches = reInput.exec(text);
-        if ( matches === null ) { return null; }
-        node = document.createElement('input');
-        node.setAttribute('type', matches[2]);
-        return node;
-    }
     // Firefox extension validator warns if using a variable as argument for
     // document.createElement().
     switch ( text ) {
@@ -87,92 +76,162 @@ var safeTextToTagNode = function(text) {
     }
 };
 
-var safeTextToTextNode = function(text) {
-    // TODO: remove once no more HTML entities in translation files.
+const safeTextToTextNode = (( ) => {
+    const entities = new Map([
+        // TODO: Remove quote entities once no longer present in translation
+        // files. Other entities must stay.
+        [ '&ldquo;', '“' ],
+        [ '&rdquo;', '”' ],
+        [ '&lsquo;', '‘' ],
+        [ '&rsquo;', '’' ],
+        [ '&lt;', '<' ],
+        [ '&gt;', '>' ],
+    ]);
+    const decodeEntities = match => {
+        return entities.get(match) || match;
+    };
+    return function(text) {
         if ( text.indexOf('&') !== -1 ) {
-        text = text.replace(/&ldquo;/g, '“')
-                   .replace(/&rdquo;/g, '”')
-                   .replace(/&lsquo;/g, '‘')
-                   .replace(/&rsquo;/g, '’');
+            text = text.replace(/&[a-z]+;/g, decodeEntities);
         }
         return document.createTextNode(text);
     };
+})();
 
-var safeTextToDOM = function(text, parent) {
+const safeTextToDOM = function(text, parent) {
     if ( text === '' ) { return; }
+
     // Fast path (most common).
     if ( text.indexOf('<') === -1 ) {
-        return parent.appendChild(safeTextToTextNode(text));
+        parent.appendChild(safeTextToTextNode(text));
+        return;
     }
     // Slow path.
-    // `<p>` no longer allowed. Code below can be remove once all <p>'s are
+    // `<p>` no longer allowed. Code below can be removed once all <p>'s are
     // gone from translation files.
     text = text.replace(/^<p>|<\/p>/g, '')
                .replace(/<p>/g, '\n\n');
     // Parse allowed HTML tags.
-    var matches,
-        matches1 = reSafeTags.exec(text),
-        matches2 = reSafeLink.exec(text);
-    if ( matches1 !== null && matches2 !== null ) {
-        matches = matches1.index < matches2.index ? matches1 : matches2;
-    } else if ( matches1 !== null ) {
-        matches = matches1;
-    } else if ( matches2 !== null ) {
-        matches = matches2;
-    } else {
-        matches = reSafeInput.exec(text);
-    }
+    let matches = reSafeTags.exec(text);
+    if ( matches === null ) {
+        matches = reSafeLink.exec(text);
         if ( matches === null ) {
             parent.appendChild(safeTextToTextNode(text));
             return;
         }
-    safeTextToDOM(matches[1], parent);
-    var node = safeTextToTagNode(matches[2]) || parent;
+    }
+    const fragment = document.createDocumentFragment();
+    safeTextToDOM(matches[1], fragment);
+    let node = safeTextToTagNode(matches[2]);
     safeTextToDOM(matches[3], node);
-    parent.appendChild(node);
-    safeTextToDOM(matches[4], parent);
+    fragment.appendChild(node);
+    safeTextToDOM(matches[4], fragment);
+    parent.appendChild(fragment);
+};
+
+/******************************************************************************/
+
+vAPI.i18n.safeTemplateToDOM = function(id, dict, parent) {
+    if ( parent === undefined ) {
+        parent = document.createDocumentFragment();
+    }
+    let textin = vAPI.i18n(id);
+    if ( textin === '' ) {
+        return parent;
+    }
+    if ( textin.indexOf('{{') === -1 ) {
+        safeTextToDOM(textin, parent);
+        return parent;
+    }
+    const re = /\{\{\w+\}\}/g;
+    let textout = '';
+    for (;;) {
+        let match = re.exec(textin);
+        if ( match === null ) {
+            textout += textin;
+            break;
+        }
+        textout += textin.slice(0, match.index);
+        let prop = match[0].slice(2, -2);
+        if ( dict.hasOwnProperty(prop) ) {
+            textout += dict[prop].replace(/</g, '&lt;')
+                                 .replace(/>/g, '&gt;');
+        } else {
+            textout += prop;
+        }
+        textin = textin.slice(re.lastIndex);
+    }
+    safeTextToDOM(textout, parent);
+    return parent;
 };
 
 /******************************************************************************/
 
 // Helper to deal with the i18n'ing of HTML files.
 vAPI.i18n.render = function(context) {
-    var docu = document,
-        root = context || docu,
-        elems, n, i, elem, text;
-
-    elems = root.querySelectorAll('[data-i18n]');
-    n = elems.length;
-    for ( i = 0; i < n; i++ ) {
-        elem = elems[i];
-        text = vAPI.i18n(elem.getAttribute('data-i18n'));
+    const docu = document;
+    const root = context || docu;
+
+    for ( const elem of root.querySelectorAll('[data-i18n]') ) {
+        let text = vAPI.i18n(elem.getAttribute('data-i18n'));
         if ( !text ) { continue; }
-        // TODO: remove once it's all replaced with <input type="...">
-        if ( text.indexOf('{') !== -1 ) {
-            text = text.replace(/\{\{input:([^}]+)\}\}/g, '<input type="$1">');
-        }
+        if ( text.indexOf('{{') === -1 ) {
             safeTextToDOM(text, elem);
+            continue;
+        }
+        // Handle selector-based placeholders: these placeholders tell where
+        // existing child DOM element are to be positioned relative to the
+        // localized text nodes.
+        const parts = text.split(/(\{\{[^}]+\}\})/);
+        const fragment = document.createDocumentFragment();
+        let textBefore = '';
+        for ( let part of parts ) {
+            if ( part === '' ) { continue; }
+            if ( part.startsWith('{{') && part.endsWith('}}') ) {
+                // TODO: remove detection of ':' once it no longer appears
+                //       in translation files.
+                const pos = part.indexOf(':');
+                if ( pos !== -1 ) {
+                    part = part.slice(0, pos) + part.slice(-2);
+                }
+                const node = elem.querySelector(part.slice(2, -2));
+                if ( node !== null ) {
+                    safeTextToDOM(textBefore, fragment);
+                    fragment.appendChild(node);
+                    textBefore = '';
+                    continue;
+                }
+            }
+            textBefore += part;
+        }
+        if ( textBefore !== '' ) {
+            safeTextToDOM(textBefore, fragment);
+        }
+        elem.appendChild(fragment);
     }
 
-    uDom('[title]', context).forEach(function(elem) {
-        var title = vAPI.i18n(elem.attr('title'));
-        if ( title ) {
-            elem.attr('title', title);
+    for ( const elem of root.querySelectorAll('[data-i18n-title]') ) {
+        const text = vAPI.i18n(elem.getAttribute('data-i18n-title'));
+        if ( !text ) { continue; }
+        elem.setAttribute('title', text);
     }
-    });
 
-    uDom('[placeholder]', context).forEach(function(elem) {
-        elem.attr('placeholder', vAPI.i18n(elem.attr('placeholder')));
-    });
+    for ( const elem of root.querySelectorAll('[placeholder]') ) {
+        elem.setAttribute(
+            'placeholder',
+            vAPI.i18n(elem.getAttribute('placeholder'))
+        );
+    }
 
-    uDom('[data-i18n-tip]', context).forEach(function(elem) {
-        elem.attr(
-            'data-tip',
-            vAPI.i18n(elem.attr('data-i18n-tip'))
+    for ( const elem of root.querySelectorAll('[data-i18n-tip]') ) {
+        const text = vAPI.i18n(elem.getAttribute('data-i18n-tip'))
                    .replace(/<br>/g, '\n')
-                .replace(/\n{3,}/g, '\n\n')
-        );
-    });
+                   .replace(/\n{3,}/g, '\n\n');
+        elem.setAttribute('data-tip', text);
+        if ( elem.getAttribute('aria-label') === 'data-tip' ) {
+            elem.setAttribute('aria-label', text);
+        }
+    }
 };
 
 vAPI.i18n.render();
@@ -180,7 +239,7 @@ vAPI.i18n.render();
 /******************************************************************************/
 
 vAPI.i18n.renderElapsedTimeToString = function(tstamp) {
-    var value = (Date.now() - tstamp) / 60000;
+    let value = (Date.now() - tstamp) / 60000;
     if ( value < 2 ) {
         return vAPI.i18n('elapsedOneMinuteAgo');
     }
@@ -203,6 +262,7 @@ vAPI.i18n.renderElapsedTimeToString = function(tstamp) {
 
 /******************************************************************************/
 
-})();
+// <<<<< end of local scope
+}
 
 /******************************************************************************/

src/js/liquid-dict.js

@@ -23,7 +23,7 @@
 
 /******************************************************************************/
 
-µMatrix.LiquidDict = (function() {
+µMatrix.LiquidDict = (( ) => {
 
 /******************************************************************************/
 
@@ -164,7 +164,7 @@ LiquidDict.prototype.reset = function() {
 
 /******************************************************************************/
 
-let selfieVersion = 1;
+const selfieVersion = 1;
 
 LiquidDict.prototype.toSelfie = function() {
     this.freeze();

src/js/logger.js

@@ -1,6 +1,6 @@
 /*******************************************************************************
 
-    uMatrix - a browser extension to block requests.
+    uBlock Origin - a browser extension to block requests.
     Copyright (C) 2015-present Raymond Hill
 
     This program is free software: you can redistribute it and/or modify
@@ -26,58 +26,57 @@
 
 µMatrix.logger = (function() {
 
-    let LogEntry = function(details) {
-        this.init(details);
-    };
-
-    LogEntry.prototype.init = function(details) {
-        this.tstamp = Date.now();
-        this.details = JSON.stringify(details);
-    };
-
     let buffer = null;
     let lastReadTime = 0;
     let writePtr = 0;
 
     // After 60 seconds without being read, a buffer will be considered
     // unused, and thus removed from memory.
-    let logBufferObsoleteAfter = 30 * 1000;
+    const logBufferObsoleteAfter = 30 * 1000;
 
-    let janitor = function() {
+    const janitor = ( ) => {
         if (
             buffer !== null &&
             lastReadTime < (Date.now() - logBufferObsoleteAfter)
         ) {
+            api.enabled = false;
             buffer = null;
             writePtr = 0;
             api.ownerId = undefined;
-            api.enabled = false;
+            vAPI.messaging.broadcast({ what: 'loggerDisabled' });
         }
         if ( buffer !== null ) {
             vAPI.setTimeout(janitor, logBufferObsoleteAfter);
         }
     };
 
-    let api = {
+    const boxEntry = function(details) {
+        if ( details.tstamp === undefined ) {
+            details.tstamp = Date.now();
+        }
+        return JSON.stringify(details);
+    };
+
+    const api = {
         enabled: false,
         ownerId: undefined,
         writeOne: function(details) {
             if ( buffer === null ) { return; }
             if ( writePtr === buffer.length ) {
-                buffer.push(new LogEntry(details));
+                buffer.push(boxEntry(details));
             } else {
-                buffer[writePtr].init(details);
+                buffer[writePtr] = boxEntry(details);
             }
             writePtr += 1;
         },
         readAll: function(ownerId) {
             this.ownerId = ownerId;
-            this.enabled = true;
             if ( buffer === null ) {
+                this.enabled = true;
                 buffer = [];
                 vAPI.setTimeout(janitor, logBufferObsoleteAfter);
             }
-            let out = buffer.slice(0, writePtr);
+            const out = buffer.slice(0, writePtr);
             writePtr = 0;
             lastReadTime = Date.now();
             return out;
@@ -85,6 +84,7 @@
     };
 
     return api;
+
 })();
 
 /******************************************************************************/

src/js/lz4.js

@@ -0,0 +1,210 @@
+/*******************************************************************************
+
+    uBlock Origin - a browser extension to block requests.
+    Copyright (C) 2018-present Raymond Hill
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see {http://www.gnu.org/licenses/}.
+
+    Home: https://github.com/gorhill/uBlock
+*/
+
+/* global lz4BlockCodec */
+
+'use strict';
+
+/*******************************************************************************
+
+    Experimental support for storage compression.
+
+    For background information on the topic, see:
+    https://github.com/uBlockOrigin/uBlock-issues/issues/141#issuecomment-407737186
+
+**/
+
+µMatrix.lz4Codec = (function() {         // >>>> Start of private namespace
+
+/******************************************************************************/
+
+let lz4CodecInstance;
+let pendingInitialization;
+let textEncoder, textDecoder;
+let ttlCount = 0;
+let ttlTimer;
+let ttlDelay = 60000;
+
+const init = function() {
+    ttlDelay = µMatrix.rawSettings.autoUpdateAssetFetchPeriod * 1000 + 15000;
+    if ( lz4CodecInstance === null ) {
+        return Promise.resolve(null);
+    }
+    if ( lz4CodecInstance !== undefined ) {
+        return Promise.resolve(lz4CodecInstance);
+    }
+    if ( pendingInitialization === undefined ) {
+        let flavor;
+        if ( µMatrix.rawSettings.disableWebAssembly === true ) {
+            flavor = 'js';
+        }
+        pendingInitialization = lz4BlockCodec.createInstance(flavor)
+            .then(instance => {
+                lz4CodecInstance = instance;
+                pendingInitialization = undefined;
+            });
+    }
+    return pendingInitialization;
+};
+
+// We can't shrink memory usage of lz4 codec instances, and in the
+// current case memory usage can grow to a significant amount given
+// that a single contiguous memory buffer is required to accommodate
+// both input and output data. Thus a time-to-live implementation
+// which will cause the wasm instance to be forgotten after enough
+// time elapse without the instance being used.
+
+const destroy = function() {
+    //if ( lz4CodecInstance !== undefined ) {
+    //    console.info(
+    //        'uBO: freeing lz4-block-codec instance (%s KB)',
+    //        lz4CodecInstance.bytesInUse() >>> 10
+    //    );
+    //}
+    lz4CodecInstance = undefined;
+    textEncoder = textDecoder = undefined;
+    ttlCount = 0;
+    ttlTimer = undefined;
+};
+
+const ttlManage = function(count) {
+    if ( ttlTimer !== undefined ) {
+        clearTimeout(ttlTimer);
+        ttlTimer = undefined;
+    }
+    ttlCount += count;
+    if ( ttlCount > 0 ) { return; }
+    if ( lz4CodecInstance === null ) { return; }
+    ttlTimer = vAPI.setTimeout(destroy, ttlDelay);
+};
+
+const uint8ArrayFromBlob = function(key, data) {
+    if ( data instanceof Blob === false ) {
+        return Promise.resolve({ key, data });
+    }
+    return new Promise(resolve => {
+        let blobReader = new FileReader();
+        blobReader.onloadend = ev => {
+            resolve({ key, data: new Uint8Array(ev.target.result) });
+        };
+        blobReader.readAsArrayBuffer(data);
+    });
+};
+
+const encodeValue = function(key, value) {
+    if ( !lz4CodecInstance ) { return; }
+    //let t0 = window.performance.now();
+    if ( textEncoder === undefined ) {
+        textEncoder = new TextEncoder();
+    }
+    let inputArray = textEncoder.encode(value);
+    let inputSize = inputArray.byteLength;
+    let outputArray = lz4CodecInstance.encodeBlock(inputArray, 8);
+    if ( outputArray instanceof Uint8Array === false ) { return; }
+    outputArray[0] = 0x18;
+    outputArray[1] = 0x4D;
+    outputArray[2] = 0x22;
+    outputArray[3] = 0x04;
+    outputArray[4] = (inputSize >>>  0) & 0xFF;
+    outputArray[5] = (inputSize >>>  8) & 0xFF;
+    outputArray[6] = (inputSize >>> 16) & 0xFF;
+    outputArray[7] = (inputSize >>> 24) & 0xFF;
+    //console.info(
+    //    'uBO: [%s] compressed %d KB => %d KB (%s%%) in %s ms',
+    //    key,
+    //    inputArray.byteLength >> 10,
+    //    outputArray.byteLength >> 10,
+    //    (outputArray.byteLength / inputArray.byteLength * 100).toFixed(0),
+    //    (window.performance.now() - t0).toFixed(1)
+    //);
+    return outputArray;
+};
+
+const decodeValue = function(key, inputArray) {
+    if ( !lz4CodecInstance ) { return; }
+    //let t0 = window.performance.now();
+    if (
+        inputArray[0] !== 0x18 || inputArray[1] !== 0x4D ||
+        inputArray[2] !== 0x22 || inputArray[3] !== 0x04
+    ) {
+        return;
+    }
+    let outputSize = 
+        (inputArray[4] <<  0) | (inputArray[5] <<  8) |
+        (inputArray[6] << 16) | (inputArray[7] << 24);
+    let outputArray = lz4CodecInstance.decodeBlock(inputArray, 8, outputSize);
+    if ( outputArray instanceof Uint8Array === false ) { return; }
+    if ( textDecoder === undefined ) {
+        textDecoder = new TextDecoder();
+    }
+    let value = textDecoder.decode(outputArray);
+    //console.info(
+    //    'uBO: [%s] decompressed %d KB => %d KB (%s%%) in %s ms',
+    //    key,
+    //    inputArray.byteLength >>> 10,
+    //    outputSize >>> 10,
+    //    (inputArray.byteLength / outputSize * 100).toFixed(0),
+    //    (window.performance.now() - t0).toFixed(1)
+    //);
+    return value;
+};
+
+return {
+    encode: function(key, dataIn) {
+        if ( typeof dataIn !== 'string' || dataIn.length < 4096 ) {
+            return Promise.resolve({ key, data: dataIn });
+        }
+        ttlManage(1);
+        return init().then(( ) => {
+            ttlManage(-1);
+            let dataOut = encodeValue(key, dataIn) || dataIn;
+            if ( dataOut instanceof Uint8Array ) {
+                dataOut = new Blob([ dataOut ]);
+            }
+            return { key, data: dataOut || dataIn };
+        });
+    },
+    decode: function(key, dataIn) {
+        if ( dataIn instanceof Blob === false ) {
+            return Promise.resolve({ key, data: dataIn });
+        }
+        ttlManage(1);
+        return Promise.all([
+            init(),
+            uint8ArrayFromBlob(key, dataIn)
+        ]).then(results => {
+            ttlManage(-1);
+            let result = results[1];
+            return {
+                key: result.key,
+                data: decodeValue(result.key, result.data) || result.data
+            };
+        });
+    },
+    relinquish: function() {
+        ttlDelay = 1;
+        ttlManage(0);
+    },
+};
+
+/******************************************************************************/
+
+})();                                   // <<<< End of private namespace

src/js/main-blocked.js

@@ -25,17 +25,18 @@
 
 /******************************************************************************/
 
-(function() {
+{
+// >>>>> start of local scope
 
 /******************************************************************************/
 
 let details = {};
 
-(function() {
-    let matches = /details=([^&]+)/.exec(window.location.search);
+(( ) => {
+    const matches = /details=([^&]+)/.exec(window.location.search);
     if ( matches === null ) { return; }
     try {
-        details = JSON.parse(atob(matches[1]));
+        details = JSON.parse(decodeURIComponent(matches[1]));
     } catch(ex) {
     }
 })();
@@ -51,15 +52,15 @@ uDom('.what').text(details.url);
 //   Code below originally imported from:
 //   https://github.com/gorhill/uBlock/blob/master/src/js/document-blocked.js
 
-(function() {
-    let reURL = /^https?:\/\//;
+(( ) => {
+    const reURL = /^https?:\/\//;
 
-    let liFromParam = function(name, value) {
+    const liFromParam = function(name, value) {
         if ( value === '' ) {
             value = name;
             name = '';
         }
-        let li = document.createElement('li');
+        const li = document.createElement('li');
         let span = document.createElement('span');
         span.textContent = name;
         li.appendChild(span);
@@ -68,7 +69,7 @@ uDom('.what').text(details.url);
         }
         span = document.createElement('span');
         if ( reURL.test(value) ) {
-            let a = document.createElement('a');
+            const a = document.createElement('a');
             a.href = a.textContent = value;
             span.appendChild(a);
         } else {
@@ -78,7 +79,7 @@ uDom('.what').text(details.url);
         return li;
     };
 
-    let safeDecodeURIComponent = function(s) {
+    const safeDecodeURIComponent = function(s) {
         try {
             s = decodeURIComponent(s);
         } catch (ex) {
@@ -86,30 +87,30 @@ uDom('.what').text(details.url);
         return s;
     };
 
-    let renderParams = function(parentNode, rawURL) {
-        let a = document.createElement('a');
+    const renderParams = function(parentNode, rawURL) {
+        const a = document.createElement('a');
         a.href = rawURL;
         if ( a.search.length === 0 ) { return false; }
 
-        let pos = rawURL.indexOf('?');
-        let li = liFromParam(
+        const pos = rawURL.indexOf('?');
+        const li = liFromParam(
             vAPI.i18n('mainBlockedNoParamsPrompt'),
             rawURL.slice(0, pos)
         );
         parentNode.appendChild(li);
 
-        let params = a.search.slice(1).split('&');
-        for ( var i = 0; i < params.length; i++ ) {
-            let param = params[i];
+        const params = a.search.slice(1).split('&');
+        for ( let i = 0; i < params.length; i++ ) {
+            const param = params[i];
             let pos = param.indexOf('=');
             if ( pos === -1 ) {
                 pos = param.length;
             }
-            let name = safeDecodeURIComponent(param.slice(0, pos));
-            let value = safeDecodeURIComponent(param.slice(pos + 1));
-            li = liFromParam(name, value);
+            const name = safeDecodeURIComponent(param.slice(0, pos));
+            const value = safeDecodeURIComponent(param.slice(pos + 1));
+            const li = liFromParam(name, value);
             if ( reURL.test(value) ) {
-                let ul = document.createElement('ul');
+                const ul = document.createElement('ul');
                 renderParams(ul, value);
                 li.appendChild(ul);
             }
@@ -118,17 +119,17 @@ uDom('.what').text(details.url);
         return true;
     };
 
-    let hasParams = renderParams(uDom.nodeFromId('parsed'), details.url);
+    const hasParams = renderParams(uDom.nodeFromId('parsed'), details.url);
     if ( hasParams === false ) { return; }
 
-    let theURLNode = document.getElementById('theURL');
+    const theURLNode = document.getElementById('theURL');
     theURLNode.classList.add('hasParams');
     theURLNode.classList.toggle(
         'collapsed',
         vAPI.localStorage.getItem('document-blocked-collapse-url') === 'true'
     );
 
-    let toggleCollapse = function() {
+    const toggleCollapse = function() {
         vAPI.localStorage.setItem(
             'document-blocked-collapse-url',
             theURLNode.classList.toggle('collapsed').toString()
@@ -163,8 +164,8 @@ vAPI.messaging.send('main-blocked.js', {
     what: 'mustBlock',
     scope: details.hn,
     hostname: details.hn,
-    type: details.type
-}, response => {
+    type: details.type,
+}).then(response => {
     if ( response === false ) {
         window.location.replace(details.url);
     }
@@ -172,6 +173,7 @@ vAPI.messaging.send('main-blocked.js', {
 
 /******************************************************************************/
 
-})();
+// <<<<< end of local scope
+}
 
 /******************************************************************************/

src/js/matrix.js

@@ -25,16 +25,16 @@
 
 /******************************************************************************/
 
-µMatrix.Matrix = (function() {
+µMatrix.Matrix = (( ) => {
 
 /******************************************************************************/
 
-var µm = µMatrix;
-var selfieVersion = 1;
+const µm = µMatrix;
+const selfieVersion = 1;
 
 /******************************************************************************/
 
-var Matrix = function() {
+const Matrix = function() {
     this.reset();
     this.sourceRegister = '';
     this.decomposedSourceRegister = [''];
@@ -60,7 +60,7 @@ Matrix.GrayIndirect  = Matrix.Gray | Matrix.Indirect;
 
 /******************************************************************************/
 
-var typeBitOffsets = new Map([
+const typeBitOffsets = new Map([
     [      '*',  0 ],
     [    'doc',  2 ],
     [ 'cookie',  4 ],
@@ -68,49 +68,50 @@ var typeBitOffsets = new Map([
     [  'image',  8 ],
     [  'media', 10 ],
     [ 'script', 12 ],
-    [    'xhr', 14 ],
+    [  'fetch', 14 ],
     [  'frame', 16 ],
-    [  'other', 18 ]
+    [  'other', 18 ],
 ]);
 
-var stateToNameMap = new Map([
+const stateToNameMap = new Map([
     [ 1, 'block' ],
     [ 2, 'allow' ],
-    [ 3, 'inherit' ]
+    [ 3, 'inherit' ],
 ]);
 
-var nameToStateMap = {
+const nameToStateMap = {
       'block': 1,
       'allow': 2,
        'noop': 2,
-    'inherit': 3
+    'inherit': 3,
 };
 
-var switchBitOffsets = new Map([
+const switchBitOffsets = new Map([
     [     'matrix-off',  0 ],
     [   'https-strict',  2 ],
     /* 4 is now unused, formerly assigned to UA spoofing */
     [ 'referrer-spoof',  6 ],
     [ 'noscript-spoof',  8 ],
-    [     'no-workers', 10 ]
+    [     'no-workers', 10 ],
+    [   'cname-reveal', 12 ],
 ]);
 
-var switchStateToNameMap = new Map([
+const switchStateToNameMap = new Map([
     [ 1, 'true' ],
-    [ 2, 'false' ]
+    [ 2, 'false' ],
 ]);
 
-var nameToSwitchStateMap = new Map([
+const nameToSwitchStateMap = new Map([
     [  'true', 1 ],
-    [ 'false', 2 ]
+    [ 'false', 2 ],
 ]);
 
 /******************************************************************************/
 
-Matrix.columnHeaderIndices = (function() {
-    var out = new Map(),
-        i = 0;
-    for ( var type of typeBitOffsets.keys() ) {
+Matrix.columnHeaderIndices = (( ) => {
+    const out = new Map();
+    let i = 0;
+    for ( const type of typeBitOffsets.keys() ) {
         out.set(type, i++);
     }
     return out;
@@ -122,14 +123,14 @@ Matrix.switchNames = new Set(switchBitOffsets.keys());
 /******************************************************************************/
 
 // For performance purpose, as simple tests as possible
-var reHostnameVeryCoarse = /[g-z_-]/;
-var reIPv4VeryCoarse = /\.\d+$/;
+const reHostnameVeryCoarse = /[g-z_-]/;
+const reIPv4VeryCoarse = /\.\d+$/;
 
 // http://tools.ietf.org/html/rfc5952
 // 4.3: "MUST be represented in lowercase"
 // Also: http://en.wikipedia.org/wiki/IPv6_address#Literal_IPv6_addresses_in_network_resource_identifiers
 
-var isIPAddress = function(hostname) {
+const isIPAddress = function(hostname) {
     if ( reHostnameVeryCoarse.test(hostname) ) {
         return false;
     }
@@ -141,19 +142,19 @@ var isIPAddress = function(hostname) {
 
 /******************************************************************************/
 
-var punycodeIf = function(hn) {
+const punycodeIf = function(hn) {
     return reNotASCII.test(hn) ? punycode.toASCII(hn) : hn;
 };
 
-var unpunycodeIf = function(hn) {
+const unpunycodeIf = function(hn) {
     return hn.indexOf('xn--') !== -1 ? punycode.toUnicode(hn) : hn;
 };
 
-var reNotASCII = /[^\x20-\x7F]/;
+const reNotASCII = /[^\x20-\x7F]/;
 
 /******************************************************************************/
 
-var toBroaderHostname = function(hostname) {
+const toBroaderHostname = function(hostname) {
     if ( hostname === '*' ) { return ''; }
     if ( isIPAddress(hostname) ) {
         return toBroaderIPAddress(hostname);
@@ -165,12 +166,12 @@ var toBroaderHostname = function(hostname) {
     return hostname.slice(pos + 1);
 };
 
-var toBroaderIPAddress = function(ipaddress) {
+const toBroaderIPAddress = function(ipaddress) {
     // Can't broaden IPv6 (for now)
     if ( ipaddress.charAt(0) === '[' ) {
         return '*';
     }
-    var pos = ipaddress.lastIndexOf('.');
+    const pos = ipaddress.lastIndexOf('.');
     return pos !== -1 ? ipaddress.slice(0, pos) : '*';
 };
 
@@ -182,8 +183,12 @@ Matrix.toBroaderHostname = toBroaderHostname;
 // speed. If desHostname is 1st-party to srcHostname, the domain is returned,
 // otherwise the empty string.
 
-var extractFirstPartyDesDomain = function(srcHostname, desHostname) {
-    if ( srcHostname === '*' || desHostname === '*' || desHostname === '1st-party' ) {
+const extractFirstPartyDesDomain = function(srcHostname, desHostname) {
+    if (
+        srcHostname === '*' ||
+        desHostname === '*' ||
+        desHostname === '1st-party'
+    ) {
         return '';
     }
     var µmuri = µm.URI;
@@ -229,9 +234,9 @@ Matrix.prototype.modified = function() {
 
 Matrix.prototype.decomposeSource = function(srcHostname) {
     if ( srcHostname === this.sourceRegister ) { return; }
-    var hn = srcHostname;
+    let hn = srcHostname;
     this.decomposedSourceRegister[0] = this.sourceRegister = hn;
-    var i = 1;
+    let i = 1;
     for (;;) {
         hn = toBroaderHostname(hn);
         this.decomposedSourceRegister[i++] = hn;
@@ -245,25 +250,24 @@ Matrix.prototype.decomposeSource = function(srcHostname) {
 // a live matrix.
 
 Matrix.prototype.assign = function(other) {
-    var k, entry;
     // Remove rules not in other
-    for ( k of this.rules.keys() ) {
+    for ( const k of this.rules.keys() ) {
         if ( other.rules.has(k) === false ) {
             this.rules.delete(k);
         }
     }
     // Remove switches not in other
-    for ( k of this.switches.keys() ) {
+    for ( const k of this.switches.keys() ) {
         if ( other.switches.has(k) === false ) {
             this.switches.delete(k);
         }
     }
     // Add/change rules in other
-    for ( entry of other.rules ) {
+    for ( const entry of other.rules ) {
         this.rules.set(entry[0], entry[1]);
     }
     // Add/change switches in other
-    for ( entry of other.switches ) {
+    for ( const entry of other.switches ) {
         this.switches.set(entry[0], entry[1]);
     }
     this.modified();
@@ -277,14 +281,14 @@ Matrix.prototype.assign = function(other) {
 // If value is undefined, the switch is removed
 
 Matrix.prototype.setSwitch = function(switchName, srcHostname, newVal) {
-    var bitOffset = switchBitOffsets.get(switchName);
+    const bitOffset = switchBitOffsets.get(switchName);
     if ( bitOffset === undefined ) {
         return false;
     }
     if ( newVal === this.evaluateSwitch(switchName, srcHostname) ) {
         return false;
     }
-    var bits = this.switches.get(srcHostname) || 0;
+    let bits = this.switches.get(srcHostname) || 0;
     bits &= ~(3 << bitOffset);
     bits |= newVal << bitOffset;
     if ( bits === 0 ) {
@@ -299,13 +303,13 @@ Matrix.prototype.setSwitch = function(switchName, srcHostname, newVal) {
 /******************************************************************************/
 
 Matrix.prototype.setCell = function(srcHostname, desHostname, type, state) {
-    var bitOffset = typeBitOffsets.get(type),
-        k = srcHostname + ' ' + desHostname,
-        oldBitmap = this.rules.get(k);
+    const bitOffset = typeBitOffsets.get(type);
+    const k = srcHostname + ' ' + desHostname;
+    let oldBitmap = this.rules.get(k);
     if ( oldBitmap === undefined ) {
         oldBitmap = 0;
     }
-    var newBitmap = oldBitmap & ~(3 << bitOffset) | (state << bitOffset);
+    const newBitmap = oldBitmap & ~(3 << bitOffset) | (state << bitOffset);
     if ( newBitmap === oldBitmap ) {
         return false;
     }
@@ -321,15 +325,11 @@ Matrix.prototype.setCell = function(srcHostname, desHostname, type, state) {
 /******************************************************************************/
 
 Matrix.prototype.blacklistCell = function(srcHostname, desHostname, type) {
-    var r = this.evaluateCellZ(srcHostname, desHostname, type);
-    if ( r === 1 ) {
-        return false;
-    }
+    let r = this.evaluateCellZ(srcHostname, desHostname, type);
+    if ( r === 1 ) { return false; }
     this.setCell(srcHostname, desHostname, type, 0);
     r = this.evaluateCellZ(srcHostname, desHostname, type);
-    if ( r === 1 ) {
-        return true;
-    }
+    if ( r === 1 ) { return true; }
     this.setCell(srcHostname, desHostname, type, 1);
     return true;
 };
@@ -337,15 +337,11 @@ Matrix.prototype.blacklistCell = function(srcHostname, desHostname, type) {
 /******************************************************************************/
 
 Matrix.prototype.whitelistCell = function(srcHostname, desHostname, type) {
-    var r = this.evaluateCellZ(srcHostname, desHostname, type);
-    if ( r === 2 ) {
-        return false;
-    }
+    let r = this.evaluateCellZ(srcHostname, desHostname, type);
+    if ( r === 2 ) { return false; }
     this.setCell(srcHostname, desHostname, type, 0);
     r = this.evaluateCellZ(srcHostname, desHostname, type);
-    if ( r === 2 ) {
-        return true;
-    }
+    if ( r === 2 ) { return true; }
     this.setCell(srcHostname, desHostname, type, 2);
     return true;
 };
@@ -353,15 +349,11 @@ Matrix.prototype.whitelistCell = function(srcHostname, desHostname, type) {
 /******************************************************************************/
 
 Matrix.prototype.graylistCell = function(srcHostname, desHostname, type) {
-    var r = this.evaluateCellZ(srcHostname, desHostname, type);
-    if ( r === 0 || r === 3 ) {
-        return false;
-    }
+    let r = this.evaluateCellZ(srcHostname, desHostname, type);
+    if ( r === 0 || r === 3 ) { return false; }
     this.setCell(srcHostname, desHostname, type, 0);
     r = this.evaluateCellZ(srcHostname, desHostname, type);
-    if ( r === 0 || r === 3 ) {
-        return true;
-    }
+    if ( r === 0 || r === 3 ) { return true; }
     this.setCell(srcHostname, desHostname, type, 3);
     return true;
 };
@@ -369,11 +361,9 @@ Matrix.prototype.graylistCell = function(srcHostname, desHostname, type) {
 /******************************************************************************/
 
 Matrix.prototype.evaluateCell = function(srcHostname, desHostname, type) {
-    var key = srcHostname + ' ' + desHostname;
-    var bitmap = this.rules.get(key);
-    if ( bitmap === undefined ) {
-        return 0;
-    }
+    const key = srcHostname + ' ' + desHostname;
+    const bitmap = this.rules.get(key);
+    if ( bitmap === undefined ) { return 0; }
     return bitmap >> typeBitOffsets.get(type) & 3;
 };
 
@@ -382,12 +372,12 @@ Matrix.prototype.evaluateCell = function(srcHostname, desHostname, type) {
 Matrix.prototype.evaluateCellZ = function(srcHostname, desHostname, type) {
     this.decomposeSource(srcHostname);
 
-    var bitOffset = typeBitOffsets.get(type),
-        s, v, i = 0;
+    const bitOffset = typeBitOffsets.get(type);
+    let i = 0;
     for (;;) {
-        s = this.decomposedSourceRegister[i++];
+        const s = this.decomposedSourceRegister[i++];
         if ( s === '' ) { break; }
-        v = this.rules.get(s + ' ' + desHostname);
+        let v = this.rules.get(s + ' ' + desHostname);
         if ( v !== undefined ) {
             v = v >> bitOffset & 3;
             if ( v !== 0 ) {
@@ -398,7 +388,7 @@ Matrix.prototype.evaluateCellZ = function(srcHostname, desHostname, type) {
     // srcHostname is '*' at this point
 
     // Preset blacklisted hostnames are blacklisted in global scope
-    if ( type === '*' && µm.ubiquitousBlacklist.test(desHostname) ) {
+    if ( type === '*' && µm.ubiquitousBlacklistRef.matches(desHostname) !== -1 ) {
         return 1;
     }
 
@@ -428,17 +418,18 @@ Matrix.prototype.evaluateCellZXY = function(srcHostname, desHostname, type) {
 
     // Specific-hostname specific-type cell
     this.specificityRegister = 1;
-    var r = this.evaluateCellZ(srcHostname, desHostname, type);
+    let r = this.evaluateCellZ(srcHostname, desHostname, type);
     if ( r === 1 ) { return Matrix.RedDirect; }
     if ( r === 2 ) { return Matrix.GreenDirect; }
 
     // Specific-hostname any-type cell
     this.specificityRegister = 2;
-    var rl = this.evaluateCellZ(srcHostname, desHostname, '*');
+    let rl = this.evaluateCellZ(srcHostname, desHostname, '*');
     if ( rl === 1 ) { return Matrix.RedIndirect; }
 
-    var d = desHostname;
-    var firstPartyDesDomain = extractFirstPartyDesDomain(srcHostname, desHostname);
+    let d = desHostname;
+    const firstPartyDesDomain =
+        extractFirstPartyDesDomain(srcHostname, desHostname);
 
     // Ancestor cells, up to 1st-party destination domain
     if ( firstPartyDesDomain !== '' ) {
@@ -504,13 +495,11 @@ Matrix.prototype.evaluateCellZXY = function(srcHostname, desHostname, type) {
     return this.rootValue;
 };
 
-// https://www.youtube.com/watch?v=4C5ZkwrnVfM
-
 /******************************************************************************/
 
 Matrix.prototype.evaluateRowZXY = function(srcHostname, desHostname) {
-    let out = [];
-    for ( let type of typeBitOffsets.keys() ) {
+    const out = [];
+    for ( const type of typeBitOffsets.keys() ) {
         out.push(this.evaluateCellZXY(srcHostname, desHostname, type));
     }
     return out;
@@ -537,18 +526,14 @@ Matrix.prototype.desHostnameFromRule = function(rule) {
 /******************************************************************************/
 
 Matrix.prototype.setSwitchZ = function(switchName, srcHostname, newState) {
-    var bitOffset = switchBitOffsets.get(switchName);
-    if ( bitOffset === undefined ) {
-        return false;
-    }
-    var state = this.evaluateSwitchZ(switchName, srcHostname);
-    if ( newState === state ) {
-        return false;
-    }
+    const bitOffset = switchBitOffsets.get(switchName);
+    if ( bitOffset === undefined ) { return false; }
+    let state = this.evaluateSwitchZ(switchName, srcHostname);
+    if ( newState === state ) { return false; }
     if ( newState === undefined ) {
         newState = !state;
     }
-    var bits = this.switches.get(srcHostname) || 0;
+    let bits = this.switches.get(srcHostname) || 0;
     bits &= ~(3 << bitOffset);
     if ( bits === 0 ) {
         this.switches.delete(srcHostname);
@@ -585,37 +570,36 @@ Matrix.prototype.evaluateSwitch = function(switchName, srcHostname) {
 /******************************************************************************/
 
 Matrix.prototype.evaluateSwitchZ = function(switchName, srcHostname) {
-    var bitOffset = switchBitOffsets.get(switchName);
+    const bitOffset = switchBitOffsets.get(switchName);
     if ( bitOffset === undefined ) { return false; }
 
     this.decomposeSource(srcHostname);
 
-    var s, bits, i = 0;
+    let i = 0;
     for (;;) {
-        s = this.decomposedSourceRegister[i++];
+        const s = this.decomposedSourceRegister[i++];
         if ( s === '' ) { break; }
-        bits = this.switches.get(s) || 0;
-        if ( bits !== 0 ) {
+        let bits = this.switches.get(s) || 0;
+        if ( bits === 0 ) { continue; }
         bits = bits >> bitOffset & 3;
         if ( bits !== 0 ) {
             return bits === 1;
         }
     }
-    }
     return false;
 };
 
 /******************************************************************************/
 
-Matrix.prototype.extractAllSourceHostnames = (function() {
-    var cachedResult = new Set();
-    var matrixId = 0;
-    var readTime = 0;
+Matrix.prototype.extractAllSourceHostnames = (( ) => {
+    const cachedResult = new Set();
+    let matrixId = 0;
+    let readTime = 0;
 
     return function() {
         if ( matrixId !== this.id || readTime !== this.modifiedTime ) {
             cachedResult.clear();
-            for ( var rule of this.rules.keys() ) {
+            for ( const rule of this.rules.keys() ) {
                 cachedResult.add(rule.slice(0, rule.indexOf(' ')));
             }
             matrixId = this.id;
@@ -627,11 +611,8 @@ Matrix.prototype.extractAllSourceHostnames = (function() {
 
 /******************************************************************************/
 
-// https://github.com/gorhill/uMatrix/issues/759
-//   Backward compatibility: 'plugin' => 'media'
-
 Matrix.prototype.partsFromLine = function(line) {
-    let fields = line.split(/\s+/);
+    const fields = line.split(/\s+/);
     if ( fields.length < 3 ) { return; }
 
     // Switches
@@ -649,7 +630,9 @@ Matrix.prototype.partsFromLine = function(line) {
     if ( fields.length < 4 ) { return; }
     fields[0] = punycodeIf(fields[0]);
     fields[1] = punycodeIf(fields[1]);
-    if ( fields[2] === 'plugin' ) { fields[2] = 'media'; }
+    if ( this.renamedRules.has(fields[2]) ) {
+        fields[2] = this.renamedRules.get(fields[2]);
+    }
     if ( typeBitOffsets.get(fields[2]) === undefined ) { return; }
     if ( nameToStateMap.hasOwnProperty(fields[3]) === false ) { return; }
     fields[3] = nameToStateMap[fields[3]];
@@ -658,11 +641,15 @@ Matrix.prototype.partsFromLine = function(line) {
 };
 
 Matrix.prototype.reSwitchRule = /^[0-9a-z-]+:$/;
+Matrix.prototype.renamedRules = new Map([
+    [ 'plugin', 'media' ],
+    [ 'xhr', 'fetch' ],
+]);
 
 /******************************************************************************/
 
 Matrix.prototype.fromArray = function(lines, append) {
-    let matrix = append === true ? this : new Matrix();
+    const matrix = append === true ? this : new Matrix();
     for ( let line of lines ) {
         matrix.addFromLine(line);
     }
@@ -673,12 +660,12 @@ Matrix.prototype.fromArray = function(lines, append) {
 };
 
 Matrix.prototype.toArray = function() {
-    let out = [];
-    for ( let rule of this.rules.keys() ) {
-        let srcHostname = this.srcHostnameFromRule(rule);
-        let desHostname = this.desHostnameFromRule(rule);
+    const out = [];
+    for ( const rule of this.rules.keys() ) {
+        const srcHostname = this.srcHostnameFromRule(rule);
+        const desHostname = this.desHostnameFromRule(rule);
         for ( let type of typeBitOffsets.keys() ) {
-            let val = this.evaluateCell(srcHostname, desHostname, type);
+            const val = this.evaluateCell(srcHostname, desHostname, type);
             if ( val === 0 ) { continue; }
             out.push(
                 unpunycodeIf(srcHostname) + ' ' +
@@ -688,9 +675,9 @@ Matrix.prototype.toArray = function() {
             );
         }
     }
-    for ( let srcHostname of this.switches.keys() ) {
-        for ( let switchName of switchBitOffsets.keys() ) {
-            let val = this.evaluateSwitch(switchName, srcHostname);
+    for ( const srcHostname of this.switches.keys() ) {
+        for ( const switchName of switchBitOffsets.keys() ) {
+            const val = this.evaluateSwitch(switchName, srcHostname);
             if ( val === 0 ) { continue; }
             out.push(
                 switchName + ': ' +
@@ -705,8 +692,8 @@ Matrix.prototype.toArray = function() {
 /******************************************************************************/
 
 Matrix.prototype.fromString = function(text, append) {
-    let matrix = append === true ? this : new Matrix();
-    let textEnd = text.length;
+    const matrix = append === true ? this : new Matrix();
+    const textEnd = text.length;
     let lineBeg = 0;
 
     while ( lineBeg < textEnd ) {
@@ -719,7 +706,7 @@ Matrix.prototype.fromString = function(text, append) {
         }
         let line = text.slice(lineBeg, lineEnd).trim();
         lineBeg = lineEnd + 1;
-        let pos = line.indexOf('# ');
+        const pos = line.indexOf('# ');
         if ( pos !== -1 ) {
             line = line.slice(0, pos).trim();
         }
@@ -741,8 +728,8 @@ Matrix.prototype.toString = function() {
 /******************************************************************************/
 
 Matrix.prototype.addFromLine = function(line) {
-    let fields = this.partsFromLine(line);
-    if ( fields !== undefined ) {
+    const fields = this.partsFromLine(line);
+    if ( fields === undefined ) { return; }
     // Switches
     if ( fields.length === 3 ) {
         return this.setSwitch(fields[0], fields[1], fields[2]);
@@ -751,12 +738,11 @@ Matrix.prototype.addFromLine = function(line) {
     if ( fields.length === 4 ) {
         return this.setCell(fields[0], fields[1], fields[2], fields[3]);
     }
-    }
 };
 
 Matrix.prototype.removeFromLine = function(line) {
-    let fields = this.partsFromLine(line);
-    if ( fields !== undefined ) {
+    const fields = this.partsFromLine(line);
+    if ( fields === undefined ) { return; }
     // Switches
     if ( fields.length === 3 ) {
         return this.setSwitch(fields[0], fields[1], 0);
@@ -765,7 +751,6 @@ Matrix.prototype.removeFromLine = function(line) {
     if ( fields.length === 4 ) {
         return this.setCell(fields[0], fields[1], fields[2], 0);
     }
-    }
 };
 
 /******************************************************************************/
@@ -789,13 +774,11 @@ Matrix.prototype.toSelfie = function() {
 /******************************************************************************/
 
 Matrix.prototype.diff = function(other, srcHostname, desHostnames) {
-    var out = [];
-    var desHostname, type;
-    var switchName, i, thisVal, otherVal;
+    const out = [];
     for (;;) {
-        for ( switchName of switchBitOffsets.keys() ) {
-            thisVal = this.evaluateSwitch(switchName, srcHostname);
-            otherVal = other.evaluateSwitch(switchName, srcHostname);
+        for ( const switchName of switchBitOffsets.keys() ) {
+            const thisVal = this.evaluateSwitch(switchName, srcHostname);
+            const otherVal = other.evaluateSwitch(switchName, srcHostname);
             if ( thisVal !== otherVal ) {
                 out.push({
                     'what': switchName,
@@ -803,12 +786,12 @@ Matrix.prototype.diff = function(other, srcHostname, desHostnames) {
                 });
             }
         }
-        i = desHostnames.length;
+        let i = desHostnames.length;
         while ( i-- ) {
-            desHostname = desHostnames[i];
-            for ( type of typeBitOffsets.keys() ) {
-                thisVal = this.evaluateCell(srcHostname, desHostname, type);
-                otherVal = other.evaluateCell(srcHostname, desHostname, type);
+            const desHostname = desHostnames[i];
+            for ( const type of typeBitOffsets.keys() ) {
+                const thisVal = this.evaluateCell(srcHostname, desHostname, type);
+                const otherVal = other.evaluateCell(srcHostname, desHostname, type);
                 if ( thisVal === otherVal ) { continue; }
                 out.push({
                     'what': 'rule',
@@ -827,18 +810,15 @@ Matrix.prototype.diff = function(other, srcHostname, desHostnames) {
 /******************************************************************************/
 
 Matrix.prototype.applyDiff = function(diff, from) {
-    var changed = false;
-    var i = diff.length;
-    var action, val;
-    while ( i-- ) {
-        action = diff[i];
+    let changed = false;
+    for ( const action of diff ) {
         if ( action.what === 'rule' ) {
-            val = from.evaluateCell(action.src, action.des, action.type);
+            const val = from.evaluateCell(action.src, action.des, action.type);
             changed = this.setCell(action.src, action.des, action.type, val) || changed;
             continue;
         }
         if ( switchBitOffsets.has(action.what) ) {
-            val = from.evaluateSwitch(action.what, action.src);
+            const val = from.evaluateSwitch(action.what, action.src);
             changed = this.setSwitch(action.what, action.src, val) || changed;
             continue;
         }
@@ -848,19 +828,19 @@ Matrix.prototype.applyDiff = function(diff, from) {
 
 Matrix.prototype.copyRuleset = function(entries, from, deep) {
     let changed = false;
-    for ( let entry of entries ) {
+    for ( const entry of entries ) {
         let srcHn = entry.srcHn;
         for (;;) {
             if (
                 entry.switchName !== undefined &&
                 switchBitOffsets.has(entry.switchName)
             ) {
-                let val = from.evaluateSwitch(entry.switchName, srcHn);
+                const val = from.evaluateSwitch(entry.switchName, srcHn);
                 if ( this.setSwitch(entry.switchName, srcHn, val) ) {
                     changed = true;
                 }
             } else if ( entry.desHn && entry.type ) {
-                let val = from.evaluateCell(srcHn, entry.desHn, entry.type);
+                const val = from.evaluateCell(srcHn, entry.desHn, entry.type);
                 if ( this.setCell(srcHn, entry.desHn, entry.type, val) ) {
                     changed = true;
                 }
@@ -879,8 +859,6 @@ return Matrix;
 
 /******************************************************************************/
 
-// https://www.youtube.com/watch?v=wlNrQGmj6oQ
-
 })();
 
 /******************************************************************************/

src/js/pagestats.js

@@ -23,42 +23,39 @@
 
 /******************************************************************************/
 
-µMatrix.pageStoreFactory = (function() {
+µMatrix.pageStoreFactory = (( ) => {
 
 /******************************************************************************/
 
-var µm = µMatrix;
+const µm = µMatrix;
 
 /******************************************************************************/
 
-var BlockedCollapsibles = function() {
+const BlockedCollapsibles = class {
+    constructor() {
         this.boundPruneAsyncCallback = this.pruneAsyncCallback.bind(this);
         this.blocked = new Map();
         this.hash = 0;
         this.timer = null;
         this.tOrigin = Date.now();
-};
-
-BlockedCollapsibles.prototype = {
-
-    shelfLife: 10 * 1000,
+    }
 
-    add: function(type, url, isSpecific) {
+    add(type, url, isSpecific) {
         if ( this.blocked.size === 0 ) { this.pruneAsync(); }
         let tStamp = Date.now() - this.tOrigin;
         // The following "trick" is to encode the specifity into the lsb of the
         // time stamp so as to avoid to have to allocate a memory structure to
         // store both time stamp and specificity.
         if ( isSpecific ) {
-            tStamp |= 0x00000001;
+            tStamp |= 1;
         } else {
-            tStamp &= 0xFFFFFFFE;
+            tStamp &= ~1;
         }
         this.blocked.set(type + ' ' + url, tStamp);
         this.hash += 1;
-    },
+    }
 
-    reset: function() {
+    reset() {
         this.blocked.clear();
         this.hash = 0;
         if ( this.timer !== null ) {
@@ -66,23 +63,23 @@ BlockedCollapsibles.prototype = {
             this.timer = null;
         }
         this.tOrigin = Date.now();
-    },
+    }
 
-    pruneAsync: function() {
+    pruneAsync() {
         if ( this.timer === null ) {
             this.timer = vAPI.setTimeout(
                 this.boundPruneAsyncCallback,
                 this.shelfLife * 2
             );
         }
-    },
+    }
 
-    pruneAsyncCallback: function() {
+    pruneAsyncCallback() {
         this.timer = null;
-        let tObsolete = Date.now() - this.tOrigin - this.shelfLife;
-        for ( let entry of this.blocked ) {
-            if ( entry[1] <= tObsolete ) {
-                this.blocked.delete(entry[0]);
+        const tObsolete = Date.now() - this.tOrigin - this.shelfLife;
+        for ( const [ key, tStamp ] of this.blocked ) {
+            if ( tStamp <= tObsolete ) {
+                this.blocked.delete(key);
             }
         }
         if ( this.blocked.size !== 0 ) {
@@ -93,6 +90,8 @@ BlockedCollapsibles.prototype = {
     }
 };
 
+BlockedCollapsibles.prototype.shelfLife = 10 * 1000;
+
 /******************************************************************************/
 
 // Ref: Given a URL, returns a (somewhat) unique 32-bit value
@@ -100,19 +99,15 @@ BlockedCollapsibles.prototype = {
 // http://www.isthe.com/chongo/tech/comp/fnv/index.html#FNV-reference-source
 // The rest is custom, suited for uMatrix.
 
-var PageStore = function(tabContext) {
+const PageStore = class {
+    constructor(tabContext) {
         this.hostnameTypeCells = new Map();
         this.domains = new Set();
         this.blockedCollapsibles = new BlockedCollapsibles();
         this.init(tabContext);
-};
-
-PageStore.prototype = {
-
-    collapsibleTypes: new Set([ 'image' ]),
-    pageStoreJunkyard: [],
+    }
 
-    init: function(tabContext) {
+    init(tabContext) {
         this.tabId = tabContext.tabId;
         this.rawURL = tabContext.rawURL;
         this.pageUrl = tabContext.normalURL;
@@ -130,13 +125,14 @@ PageStore.prototype = {
         this.hasMixedContent = false;
         this.hasNoscriptTags = false;
         this.hasWebWorkers = false;
+        this.hasHostnameAliases = false;
         this.incinerationTimer = null;
         this.mtxContentModifiedTime = 0;
         this.mtxCountModifiedTime = 0;
         return this;
-    },
+    }
 
-    dispose: function() {
+    dispose() {
         this.tabId = '';
         this.rawURL = '';
         this.pageUrl = '';
@@ -154,9 +150,9 @@ PageStore.prototype = {
         if ( this.pageStoreJunkyard.length < 8 ) {
             this.pageStoreJunkyard.push(this);
         }
-    },
+    }
 
-    cacheBlockedCollapsible: function(type, url, specificity) {
+    cacheBlockedCollapsible(type, url, specificity) {
         if ( this.collapsibleTypes.has(type) ) {
             this.blockedCollapsibles.add(
                 type,
@@ -164,20 +160,20 @@ PageStore.prototype = {
                 specificity !== 0 && specificity < 5
             );
         }
-    },
+    }
 
-    lookupBlockedCollapsibles: function(request, response) {
-        var tabContext = µm.tabContextManager.lookup(this.tabId);
+    lookupBlockedCollapsibles(request, response) {
+        const tabContext = µm.tabContextManager.lookup(this.tabId);
         if ( tabContext === null ) { return; }
 
         if (
             Array.isArray(request.toFilter) &&
             request.toFilter.length !== 0
         ) {
-            let roothn = tabContext.rootHostname,
-                hnFromURI = µm.URI.hostnameFromURI,
-                tMatrix = µm.tMatrix;
-            for ( let entry of request.toFilter ) {
+            const roothn = tabContext.rootHostname;
+            const hnFromURI = vAPI.hostnameFromURI;
+            const tMatrix = µm.tMatrix;
+            for ( const entry of request.toFilter ) {
                 if ( tMatrix.mustBlock(roothn, hnFromURI(entry.url), entry.type) ) {
                     this.blockedCollapsibles.add(
                         entry.type,
@@ -191,19 +187,19 @@ PageStore.prototype = {
         if ( this.blockedCollapsibles.hash === response.hash ) { return; }
         response.hash = this.blockedCollapsibles.hash;
 
-        let collapseBlacklisted = µm.userSettings.collapseBlacklisted,
-            collapseBlocked = µm.userSettings.collapseBlocked,
-            blockedResources = response.blockedResources;
+        const collapseBlacklisted = µm.userSettings.collapseBlacklisted;
+        const collapseBlocked = µm.userSettings.collapseBlocked;
+        const blockedResources = response.blockedResources;
 
-        for ( let entry of this.blockedCollapsibles.blocked ) {
+        for ( const entry of this.blockedCollapsibles.blocked ) {
             blockedResources.push([
                 entry[0],
                 collapseBlocked || collapseBlacklisted && (entry[1] & 1) !== 0
             ]);
         }
-    },
+    }
 
-    recordRequest: function(type, url, block) {
+    recordRequest(type, url, block) {
         if ( this.tabId <= 0 ) { return; }
 
         if ( block ) {
@@ -216,19 +212,19 @@ PageStore.prototype = {
         // - remember which hostname/type were seen
         // - count the number of distinct URLs for any given
         //   hostname-type pair
-        var hostname = µm.URI.hostnameFromURI(url),
-            key = hostname + ' ' + type,
-            uids = this.hostnameTypeCells.get(key);
+        const hostname = vAPI.hostnameFromURI(url);
+        const key = hostname + ' ' + type;
+        let uids = this.hostnameTypeCells.get(key);
         if ( uids === undefined ) {
             this.hostnameTypeCells.set(key, (uids = new Set()));
         } else if ( uids.size > 99 ) {
             return;
         }
-        var uid = this.uidFromURL(url);
+        const uid = this.uidFromURL(url);
         if ( uids.has(uid) ) { return; }
         uids.add(uid);
 
-        µm.updateBadgeAsync(this.tabId);
+        µm.updateToolbarIcon(this.tabId);
 
         this.mtxCountModifiedTime = Date.now();
 
@@ -237,24 +233,27 @@ PageStore.prototype = {
             this.allHostnamesString += hostname + ' ';
             this.mtxContentModifiedTime = Date.now();
         }
-    },
+    }
 
-    uidFromURL: function(uri) {
-        var hint = 0x811c9dc5,
-            i = uri.length;
+    uidFromURL(uri) {
+        let hint = 0x811c9dc5;
+        let i = uri.length;
         while ( i-- ) {
-            hint ^= uri.charCodeAt(i) | 0;
-            hint += (hint<<1) + (hint<<4) + (hint<<7) + (hint<<8) + (hint<<24) | 0;
+            hint ^= uri.charCodeAt(i);
+            hint += (hint<<1) + (hint<<4) + (hint<<7) + (hint<<8) + (hint<<24);
             hint >>>= 0;
         }
         return hint;
     }
 };
 
+PageStore.prototype.collapsibleTypes = new Set([ 'image' ]);
+PageStore.prototype.pageStoreJunkyard = [];
+
 /******************************************************************************/
 
 return function pageStoreFactory(tabContext) {
-    var entry = PageStore.prototype.pageStoreJunkyard.pop();
+    const entry = PageStore.prototype.pageStoreJunkyard.pop();
     if ( entry ) {
         return entry.init(tabContext);
     }

src/js/raw-settings.js

@@ -19,23 +19,34 @@
     Home: https://github.com/gorhill/uBlock
 */
 
-/* global uDom */
+/* global CodeMirror, uDom, uBlockDashboard */
 
 'use strict';
 
 /******************************************************************************/
 
-(function() {
+{
+// >>>>> start of local scope
 
 /******************************************************************************/
 
-var messaging = vAPI.messaging;
-var cachedData = '';
-var rawSettingsInput = uDom.nodeFromId('rawSettings');
+const cmEditor = new CodeMirror(
+    document.getElementById('rawSettings'),
+    {
+        autofocus: true,
+        lineNumbers: true,
+        lineWrapping: true,
+        styleActiveLine: true
+    }
+);
+
+uBlockDashboard.patchCodeMirrorEditor(cmEditor);
+
+let cachedData = '';
 
 /******************************************************************************/
 
-var hashFromRawSettings = function(raw) {
+const hashFromRawSettings = function(raw) {
     return raw.trim().replace(/\s+/g, '|');
 };
 
@@ -43,63 +54,63 @@ var hashFromRawSettings = function(raw) {
 
 // This is to give a visual hint that the content of user blacklist has changed.
 
-var rawSettingsChanged = (function () {
-    var timer = null;
+const rawSettingsChanged = (( ) => {
+    let timer;
 
-    var handler = function() {
-        timer = null;
-        var changed =
-            hashFromRawSettings(rawSettingsInput.value) !== cachedData;
-        uDom.nodeFromId('rawSettingsApply').disabled = !changed;
+    const handler = function() {
+        timer = undefined;
+        const changed =
+            hashFromRawSettings(cmEditor.getValue()) !== cachedData;
+        uDom.nodeFromId('rawSettingsApply').disabled = changed === false;
+        CodeMirror.commands.save = changed ? applyChanges : function(){};
     };
 
     return function() {
-        if ( timer !== null ) {
+        if ( timer !== undefined ) {
             clearTimeout(timer);
         }
         timer = vAPI.setTimeout(handler, 100);
     };
 })();
 
+cmEditor.on('changes', rawSettingsChanged);
+
 /******************************************************************************/
 
-function renderRawSettings() {
-    var onRead = function(raw) {
+const renderRawSettings = async function(first) {
+    const raw = await vAPI.messaging.send('dashboard', {
+        what: 'readRawSettings'
+    });
     cachedData = hashFromRawSettings(raw);
-        var pretty = [],
-            whitespaces = '                                ',
-            lines = raw.split('\n'),
-            max = 0,
-            pos,
-            i, n = lines.length;
-        for ( i = 0; i < n; i++ ) {
-            pos = lines[i].indexOf(' ');
-            if ( pos > max ) {
-                max = pos;
+    const lines = raw.split('\n');
+    const n = lines.length;
+    let max = 0;
+    for ( let i = 0; i < n; i++ ) {
+        const pos = lines[i].indexOf(' ');
+        if ( pos > max ) { max = pos; }
     }
+    const pretty = [];
+    for ( let i = 0; i < n; i++ ) {
+        const pos = lines[i].indexOf(' ');
+        pretty.push(' '.repeat(max - pos) + lines[i]);
     }
-        for ( i = 0; i < n; i++ ) {
-            pos = lines[i].indexOf(' ');
-            pretty.push(whitespaces.slice(0, max - pos) + lines[i]);
+    pretty.push('');
+    cmEditor.setValue(pretty.join('\n'));
+    if ( first ) {
+        cmEditor.clearHistory();
     }
-        rawSettingsInput.value = pretty.join('\n') + '\n';
     rawSettingsChanged();
-        rawSettingsInput.focus();
+    cmEditor.focus();
 };
-    messaging.send('dashboard', { what: 'readRawSettings' }, onRead);
-}
 
 /******************************************************************************/
 
-var applyChanges = function() {
-    messaging.send(
-        'dashboard',
-        {
+const applyChanges = async function() {
+    await vAPI.messaging.send('dashboard', {
         what: 'writeRawSettings',
-            content: rawSettingsInput.value
-        },
-        renderRawSettings
-    );
+        content: cmEditor.getValue(),
+    });
+    renderRawSettings();
 };
 
 /******************************************************************************/
@@ -108,8 +119,9 @@ var applyChanges = function() {
 uDom('#rawSettings').on('input', rawSettingsChanged);
 uDom('#rawSettingsApply').on('click', applyChanges);
 
-renderRawSettings();
+renderRawSettings(true);
 
 /******************************************************************************/
 
-})();
+// <<<<< end of local scope
+}

src/js/settings.js

@@ -25,37 +25,38 @@
 
 /******************************************************************************/
 
-(function() {
+{
+// >>>>> start of local scope
 
 /******************************************************************************/
 
-var cachedSettings = {};
+let cachedSettings = {};
 
 /******************************************************************************/
 
-function changeUserSettings(name, value) {
-    vAPI.messaging.send('settings.js', {
+const changeUserSettings = function(name, value) {
+    vAPI.messaging.send('dashboard', {
         what: 'userSettings',
-        name: name,
-        value: value
+        name,
+        value
     });
-}
+};
 
 /******************************************************************************/
 
-function changeMatrixSwitch(name, state) {
-    vAPI.messaging.send('settings.js', {
+const changeMatrixSwitch = function(switchName, state) {
+    vAPI.messaging.send('dashboard', {
         what: 'setMatrixSwitch',
-        switchName: name,
-        state: state
+        switchName,
+        state
     });
-}
+};
 
 /******************************************************************************/
 
-function onChangeValueHandler(elem, setting, min, max) {
-    var oldVal = cachedSettings.userSettings[setting];
-    var newVal = Math.round(parseFloat(elem.value));
+const onChangeValueHandler = function (elem, setting, min, max) {
+    const oldVal = cachedSettings.userSettings[setting];
+    let newVal = Math.round(parseFloat(elem.value));
     if ( typeof newVal !== 'number' ) {
         newVal = oldVal;
     } else {
@@ -66,11 +67,11 @@ function onChangeValueHandler(elem, setting, min, max) {
     if ( newVal !== oldVal ) {
         changeUserSettings(setting, newVal);
     }
-}
+};
 
 /******************************************************************************/
 
-function prepareToDie() {
+const prepareToDie = function() {
     onChangeValueHandler(
         uDom.nodeFromId('deleteUnusedSessionCookiesAfter'),
         'deleteUnusedSessionCookiesAfter',
@@ -81,12 +82,12 @@ function prepareToDie() {
         'clearBrowserCacheAfter',
         15, 1440
     );
-}
+};
 
 /******************************************************************************/
 
-function onInputChanged(ev) {
-    var target = ev.target;
+const onInputChanged = function(ev) {
+    const target = ev.target;
 
     switch ( target.id ) {
     case 'displayTextSize':
@@ -133,40 +134,37 @@ function onInputChanged(ev) {
     default:
         break;
     }
-}
+};
 
 /******************************************************************************/
 
-function synchronizeWidgets() {
-    var e1, e2;
-
-    e1 = uDom.nodeFromId('collapseBlocked');
-    e2 = uDom.nodeFromId('collapseBlacklisted');
+const synchronizeWidgets = function() {
+    const e1 = uDom.nodeFromId('collapseBlocked');
+    const e2 = uDom.nodeFromId('collapseBlacklisted');
     if ( e1.checked ) {
         e2.setAttribute('disabled', '');
     } else {
         e2.removeAttribute('disabled');
     }
-}
+};
 
 /******************************************************************************/
 
-vAPI.messaging.send(
-    'settings.js',
-    { what: 'getUserSettings' },
-    function onSettingsReceived(settings) {
+vAPI.messaging.send('dashboard', {
+    what: 'getUserSettings'
+}).then(settings => {
     // Cache copy
     cachedSettings = settings;
 
-        var userSettings = settings.userSettings;
-        var matrixSwitches = settings.matrixSwitches;
+    const userSettings = settings.userSettings;
+    const matrixSwitches = settings.matrixSwitches;
 
     uDom('[data-setting-bool]').forEach(function(elem){
         elem.prop('checked', userSettings[elem.prop('id')] === true);
     });
 
     uDom('[data-matrix-switch]').forEach(function(elem){
-            var switchName = elem.attr('data-matrix-switch');
+        const switchName = elem.attr('data-matrix-switch');
         if ( typeof switchName === 'string' && switchName !== '' ) {
             elem.prop('checked', matrixSwitches[switchName] === true);
         }
@@ -187,9 +185,9 @@ vAPI.messaging.send(
 
     // https://github.com/gorhill/httpswitchboard/issues/197
     uDom(window).on('beforeunload', prepareToDie);
-    }
-);
+});
 
 /******************************************************************************/
 
-})();
+// <<<<< end of local scope
+}

src/js/start.js

@@ -19,97 +19,65 @@
     Home: https://github.com/gorhill/uMatrix
 */
 
-// ORDER IS IMPORTANT
-
-/******************************************************************************/
-
-// Load everything
-
-(function() {
-
 'use strict';
 
 /******************************************************************************/
 
-var µm = µMatrix;
-
-/******************************************************************************/
-
-var processCallbackQueue = function(queue, callback) {
-    var processOne = function() {
-        var fn = queue.pop();
-        if ( fn ) {
-            fn(processOne);
-        } else if ( typeof callback === 'function' ) {
-            callback();
+(async ( ) => {
+    const µm = µMatrix;
+
+    await Promise.all([
+        µm.loadPublicSuffixList(),
+        µm.loadUserSettings(),
+    ]);
+    log.info(`PSL and user settings ready ${Date.now()-vAPI.T0} ms after launch`);
+
+    {
+        let trieDetails;
+        try {
+            trieDetails = JSON.parse(
+                vAPI.localStorage.getItem('ubiquitousBlacklist.trieDetails')
+            );
+        } catch(ex) {
         }
-    };
-    processOne();
-};
-
-/******************************************************************************/
-
-var onAllDone = function() {
-    µm.webRequest.start();
-
-    µm.loadRecipes();
-
-    // https://github.com/uBlockOrigin/uMatrix-issues/issues/63
-    //   Ensure user settings are fully loaded before launching the
-    //   asset updater.
-    µm.assets.addObserver(µm.assetObserver.bind(µm));
-    µm.scheduleAssetUpdater(µm.userSettings.autoUpdate ? 7 * 60 * 1000 : 0);
-
-    vAPI.cloud.start([ 'myRulesPane' ]);
-};
-
-/******************************************************************************/
-
-var onPSLReady = function() {
-    // TODO: Promisify
-    let count = 4;
-    const countdown = ( ) => {
-        count -= 1;
-        if ( count !== 0 ) { return; }
-        onAllDone();
-    };
+        µm.ubiquitousBlacklist = new µm.HNTrieContainer(trieDetails);
+        µm.ubiquitousBlacklist.initWASM();
+    }
+    log.info(`Ubiquitous block container ready ${Date.now()-vAPI.T0} ms after launch`);
 
-    µm.loadRawSettings(countdown);
-    µm.loadMatrix(countdown);
-    µm.loadHostsFiles(countdown);
+    await Promise.all([
+        µm.loadRawSettings(),
+        µm.loadMatrix(),
+        µm.loadHostsFiles(),
+    ]);
+    log.info(`Ubiquitous block rules ready ${Date.now()-vAPI.T0} ms after launch`);
 
-    vAPI.tabs.getAll(tabs => {
+    {
         const pageStore =
             µm.pageStoreFactory(µm.tabContextManager.mustLookup(vAPI.noTabId));
         pageStore.title = vAPI.i18n('statsPageDetailedBehindTheScenePage');
         µm.pageStores.set(vAPI.noTabId, pageStore);
+    }
 
+    const tabs = await vAPI.tabs.query({ url: '<all_urls>' });
     if ( Array.isArray(tabs) ) {
         for ( const tab of tabs ) {
             µm.tabContextManager.push(tab.id, tab.url, 'newURL');
+            µm.bindTabToPageStats(tab.id);
+            µm.setPageStoreTitle(tab.id, tab.title);
         }
     }
-        countdown();
-    });
-};
-
-/******************************************************************************/
+    log.info(`Tab stores ready ${Date.now()-vAPI.T0} ms after launch`);
 
-processCallbackQueue(µm.onBeforeStartQueue, function() {
-    // TODO: Promisify
-    let count = 2;
-    const countdown = ( ) => {
-        count -= 1;
-        if ( count !== 0 ) { return; }
-        onPSLReady();
-    };
-
-    µm.publicSuffixList.load(countdown);
-    µm.loadUserSettings(countdown);
-});
+    µm.webRequest.start();
 
-/******************************************************************************/
+    µm.loadRecipes();
 
+    // https://github.com/uBlockOrigin/uMatrix-issues/issues/63
+    //   Ensure user settings are fully loaded before launching the
+    //   asset updater.
+    µm.assets.addObserver(µm.assetObserver.bind(µm));
+    µm.scheduleAssetUpdater(µm.userSettings.autoUpdate ? 7 * 60 * 1000 : 0);
 })();
 
 /******************************************************************************/

src/js/tab.js

@@ -19,16 +19,16 @@
     Home: https://github.com/gorhill/uMatrix
 */
 
+'use strict';
+
 /******************************************************************************/
 /******************************************************************************/
 
-(function() {
-
-'use strict';
+(( ) => {
 
 /******************************************************************************/
 
-var µm = µMatrix;
+const µm = µMatrix;
 
 // https://github.com/gorhill/httpswitchboard/issues/303
 // Some kind of trick going on here:
@@ -152,35 +152,9 @@ housekeep itself.
 
 */
 
-µm.tabContextManager = (function() {
-    let tabContexts = new Map();
-
-    let urlToTabIds = {
-        associations: new Map(),
-        associate: function(tabId, url) {
-            let tabIds = this.associations.get(url);
-            if ( tabIds === undefined ) {
-                this.associations.set(url, (tabIds = []));
-            } else {
-                let i = tabIds.indexOf(tabId);
-                if ( i !== -1 ) {
-                    tabIds.splice(i, 1);
-                }
-            }
-            tabIds.push(tabId);
-        },
-        dissociate: function(tabId, url) {
-            let tabIds = this.associations.get(url);
-            if ( tabIds === undefined ) { return; }
-            let i = tabIds.indexOf(tabId);
-            if ( i !== -1 ) {
-                tabIds.splice(i, 1);
-            }
-            if ( tabIds.length === 0 ) {
-                this.associations.delete(url);
-            }
-        }
-    };
+µMatrix.tabContextManager = (( ) => {
+    const µm = µMatrix;
+    const tabContexts = new Map();
 
     // https://github.com/chrisaljoudi/uBlock/issues/1001
     // This is to be used as last-resort fallback in case a tab is found to not
@@ -188,27 +162,32 @@ housekeep itself.
     let mostRecentRootDocURL = '';
     let mostRecentRootDocURLTimestamp = 0;
 
-    let gcPeriod = 31 * 60 * 1000; // every 31 minutes
+    const onTabCreated = async function(/* createDetails */) {
+    };
+
+    const gcPeriod = 10 * 60 * 1000;
 
     // A pushed entry is removed from the stack unless it is committed with
     // a set time.
-    let StackEntry = function(url, commit) {
+    const StackEntry = function(url, commit) {
         this.url = url;
         this.committed = commit;
         this.tstamp = Date.now();
     };
 
-    let TabContext = function(tabId) {
+    const TabContext = function(tabId) {
         this.tabId = tabId;
         this.stack = [];
         this.rawURL =
         this.normalURL =
-        this.scheme =
+        this.origin =
         this.rootHostname =
         this.rootDomain = '';
-        this.secure = false;
         this.commitTimer = null;
         this.gcTimer = null;
+        this.onGCBarrier = false;
+        this.netFiltering = true;
+        this.netFilteringReadTime = 0;
 
         tabContexts.set(tabId, this);
     };
@@ -219,36 +198,44 @@ housekeep itself.
             clearTimeout(this.gcTimer);
             this.gcTimer = null;
         }
-        urlToTabIds.dissociate(this.tabId, this.rawURL);
         tabContexts.delete(this.tabId);
     };
 
     TabContext.prototype.onTab = function(tab) {
         if ( tab ) {
-            this.gcTimer = vAPI.setTimeout(this.onGC.bind(this), gcPeriod);
+            this.gcTimer = vAPI.setTimeout(( ) => this.onGC(), gcPeriod);
         } else {
             this.destroy();
         }
     };
 
-    TabContext.prototype.onGC = function() {
-        this.gcTimer = null;
+    TabContext.prototype.onGC = async function() {
         if ( vAPI.isBehindTheSceneTabId(this.tabId) ) { return; }
-        vAPI.tabs.get(this.tabId, this.onTab.bind(this));
+        // https://github.com/gorhill/uBlock/issues/1713
+        // For unknown reasons, Firefox's setTimeout() will sometimes
+        // causes the callback function to be called immediately, bypassing
+        // the main event loop. For now this should prevent uBO from crashing
+        // as a result of the bad setTimeout() behavior.
+        if ( this.onGCBarrier ) { return; }
+        this.onGCBarrier = true;
+        this.gcTimer = null;
+        const tab = await vAPI.tabs.get(this.tabId);
+        this.onTab(tab);
+        this.onGCBarrier = false;
     };
 
     // https://github.com/gorhill/uBlock/issues/248
     // Stack entries have to be committed to stick. Non-committed stack
     // entries are removed after a set delay.
     TabContext.prototype.onCommit = function() {
-        if ( vAPI.isBehindTheSceneTabId(this.tabId) ) { return; }
+        if ( vAPI.isBehindTheSceneTabId(this.tabId) ) {
+            return;
+        }
         this.commitTimer = null;
         // Remove uncommitted entries at the top of the stack.
         let i = this.stack.length;
         while ( i-- ) {
-            if ( this.stack[i].committed ) {
-                break;
-            }
+            if ( this.stack[i].committed ) { break; }
         }
         // https://github.com/gorhill/uBlock/issues/300
         // If no committed entry was found, fall back on the bottom-most one
@@ -261,7 +248,6 @@ housekeep itself.
         if ( i < this.stack.length ) {
             this.stack.length = i;
             this.update();
-            µm.bindTabToPageStats(this.tabId, 'newURL');
         }
     };
 
@@ -270,76 +256,103 @@ housekeep itself.
     // want to flush it.
     TabContext.prototype.autodestroy = function() {
         if ( vAPI.isBehindTheSceneTabId(this.tabId) ) { return; }
-        this.gcTimer = vAPI.setTimeout(this.onGC.bind(this), gcPeriod);
+        this.gcTimer = vAPI.setTimeout(( ) => this.onGC(), gcPeriod);
     };
 
     // Update just force all properties to be updated to match the most recent
     // root URL.
     TabContext.prototype.update = function() {
-        urlToTabIds.dissociate(this.tabId, this.rawURL);
+        this.netFilteringReadTime = 0;
         if ( this.stack.length === 0 ) {
-            this.rawURL = this.normalURL = this.scheme =
-            this.rootHostname = this.rootDomain = '';
-            this.secure = false;
+            this.rawURL =
+            this.normalURL =
+            this.origin =
+            this.rootHostname =
+            this.rootDomain = '';
             return;
         }
-        this.rawURL = this.stack[this.stack.length - 1].url;
+        const stackEntry = this.stack[this.stack.length - 1];
+        this.rawURL = stackEntry.url;
         this.normalURL = µm.normalizePageURL(this.tabId, this.rawURL);
-        this.scheme = µm.URI.schemeFromURI(this.rawURL);
-        this.rootHostname = µm.URI.hostnameFromURI(this.normalURL);
-        this.rootDomain = µm.URI.domainFromHostname(this.rootHostname) || this.rootHostname;
-        this.secure = µm.URI.isSecureScheme(this.scheme);
-        urlToTabIds.associate(this.tabId, this.rawURL);
+        this.origin = µm.URI.originFromURI(this.normalURL);
+        this.rootHostname = µm.URI.hostnameFromURI(this.origin);
+        this.rootDomain =
+            µm.URI.domainFromHostname(this.rootHostname) ||
+            this.rootHostname;
     };
 
     // Called whenever a candidate root URL is spotted for the tab.
-    TabContext.prototype.push = function(url, context) {
-        if ( vAPI.isBehindTheSceneTabId(this.tabId) ) { return; }
-        let committed = context !== undefined;
-        let count = this.stack.length;
-        let topEntry = this.stack[count - 1];
-        if ( topEntry && topEntry.url === url ) {
-            if ( committed ) {
-                topEntry.committed = true;
+    TabContext.prototype.push = function(url) {
+        if ( vAPI.isBehindTheSceneTabId(this.tabId) ) {
+            return;
         }
+        const count = this.stack.length;
+        if ( count !== 0 && this.stack[count - 1].url === url ) {
             return;
         }
+        this.stack.push(new StackEntry(url));
+        this.update();
         if ( this.commitTimer !== null ) {
             clearTimeout(this.commitTimer);
         }
-        if ( committed ) {
-            this.stack = [new StackEntry(url, true)];
-        } else {
-            this.stack.push(new StackEntry(url));
-            this.commitTimer = vAPI.setTimeout(this.onCommit.bind(this), 1000);
+        this.commitTimer = vAPI.setTimeout(( ) => this.onCommit(), 500);
+    };
+
+    // This tells that the url is definitely the one to be associated with the
+    // tab, there is no longer any ambiguity about which root URL is really
+    // sitting in which tab.
+    TabContext.prototype.commit = function(url) {
+        if ( vAPI.isBehindTheSceneTabId(this.tabId) ) { return; }
+        if ( this.stack.length !== 0 ) {
+            const top = this.stack[this.stack.length - 1];
+            if ( top.url === url && top.committed ) { return false; }
         }
+        this.stack = [new StackEntry(url, true)];
         this.update();
-        µm.bindTabToPageStats(this.tabId, context);
+        return true;
+    };
+
+    TabContext.prototype.getNetFilteringSwitch = function() {
+        if ( this.netFilteringReadTime > µm.netWhitelistModifyTime ) {
+            return this.netFiltering;
+        }
+        // https://github.com/chrisaljoudi/uBlock/issues/1078
+        // Use both the raw and normalized URLs.
+        this.netFiltering = µm.getNetFilteringSwitch(this.normalURL);
+        if (
+            this.netFiltering &&
+            this.rawURL !== this.normalURL &&
+            this.rawURL !== ''
+        ) {
+            this.netFiltering = µm.getNetFilteringSwitch(this.rawURL);
+        }
+        this.netFilteringReadTime = Date.now();
+        return this.netFiltering;
     };
 
     // These are to be used for the API of the tab context manager.
 
-    let push = function(tabId, url, context) {
+    const push = function(tabId, url) {
         let entry = tabContexts.get(tabId);
         if ( entry === undefined ) {
             entry = new TabContext(tabId);
             entry.autodestroy();
         }
-        entry.push(url, context);
+        entry.push(url);
         mostRecentRootDocURL = url;
         mostRecentRootDocURLTimestamp = Date.now();
         return entry;
     };
 
+    // Find a tab context for a specific tab.
+    const lookup = function(tabId) {
+        return tabContexts.get(tabId) || null;
+    };
+
     // Find a tab context for a specific tab. If none is found, attempt to
     // fix this. When all fail, the behind-the-scene context is returned.
-    let mustLookup = function(tabId, url) {
-        let entry;
-        if ( url !== undefined ) {
-            entry = push(tabId, url);
-        } else {
-            entry = tabContexts.get(tabId);
-        }
+    const mustLookup = function(tabId) {
+        const entry = tabContexts.get(tabId);
         if ( entry !== undefined ) {
             return entry;
         }
@@ -347,7 +360,10 @@ housekeep itself.
         // Google Hangout popup opens without a root frame. So for now we will
         // just discard that best-guess root frame if it is too far in the
         // future, at which point it ceases to be a "best guess".
-        if ( mostRecentRootDocURL !== '' && mostRecentRootDocURLTimestamp + 500 < Date.now() ) {
+        if (
+            mostRecentRootDocURL !== '' &&
+            mostRecentRootDocURLTimestamp + 500 < Date.now()
+        ) {
             mostRecentRootDocURL = '';
         }
         // https://github.com/chrisaljoudi/uBlock/issues/1001
@@ -367,67 +383,139 @@ housekeep itself.
         return tabContexts.get(vAPI.noTabId);
     };
 
-    let lookup = function(tabId) {
-        return tabContexts.get(tabId) || null;
+    const commit = function(tabId, url) {
+        let entry = tabContexts.get(tabId);
+        if ( entry === undefined ) {
+            entry = push(tabId, url);
+        } else {
+            entry.commit(url);
+        }
+        return entry;
     };
 
-    let tabIdFromURL = function(url) {
-        let tabIds = urlToTabIds.associations.get(url);
-        if ( tabIds === undefined ) { return -1; }
-        return tabIds[tabIds.length - 1];
+    const exists = function(tabId) {
+        return tabContexts.get(tabId) !== undefined;
     };
 
     // Behind-the-scene tab context
-    (function() {
-        let entry = new TabContext(vAPI.noTabId);
+    {
+        const entry = new TabContext(vAPI.noTabId);
         entry.stack.push(new StackEntry('', true));
         entry.rawURL = '';
         entry.normalURL = µm.normalizePageURL(entry.tabId);
-        entry.rootHostname = µm.URI.hostnameFromURI(entry.normalURL);
-        entry.rootDomain = µm.URI.domainFromHostname(entry.rootHostname) || entry.rootHostname;
-    })();
+        entry.origin = µm.URI.originFromURI(entry.normalURL);
+        entry.rootHostname = µm.URI.hostnameFromURI(entry.origin);
+        entry.rootDomain = µm.URI.domainFromHostname(entry.rootHostname);
+    }
 
-    // https://github.com/gorhill/uMatrix/issues/513
-    //   Force a badge update here, it could happen that all the subsequent
-    //   network requests are already in the page store, which would cause
-    //   the badge to no be updated for these network requests.
+    // Context object, typically to be used to feed filtering engines.
+    const contextJunkyard = [];
+    const Context = class {
+        constructor(tabId) {
+            this.init(tabId);
+        }
+        init(tabId) {
+            const tabContext = lookup(tabId);
+            this.rootHostname = tabContext.rootHostname;
+            this.rootDomain = tabContext.rootDomain;
+            this.pageHostname =
+            this.pageDomain =
+            this.requestURL =
+            this.origin =
+            this.requestHostname =
+            this.requestDomain = '';
+            return this;
+        }
+        dispose() {
+            contextJunkyard.push(this);
+        }
+    };
 
-    vAPI.tabs.onNavigation = function(details) {
-        let tabId = details.tabId;
-        if ( vAPI.isBehindTheSceneTabId(tabId) ) { return; }
-        push(tabId, details.url, 'newURL');
-        µm.updateBadgeAsync(tabId);
+    const createContext = function(tabId) {
+        if ( contextJunkyard.length ) {
+            return contextJunkyard.pop().init(tabId);
+        }
+        return new Context(tabId);
     };
 
-    // https://github.com/gorhill/uMatrix/issues/872
-    //   `changeInfo.url` may not always be available (Firefox).
+    return {
+        push,
+        commit,
+        lookup,
+        mustLookup,
+        exists,
+        createContext,
+        onTabCreated,
+    };
+})();
 
-    vAPI.tabs.onUpdated = function(tabId, changeInfo, tab) {
+/******************************************************************************/
+/******************************************************************************/
+
+vAPI.Tabs = class extends vAPI.Tabs {
+    onActivated(details) {
+        super.onActivated(details);
+        if ( vAPI.isBehindTheSceneTabId(details.tabId) ) { return; }
+        // https://github.com/uBlockOrigin/uBlock-issues/issues/680
+        µMatrix.updateToolbarIcon(details.tabId);
+        //µMatrix.contextMenu.update(details.tabId);
+    }
+
+    onClosed(tabId) {
+        super.onClosed(tabId);
         if ( vAPI.isBehindTheSceneTabId(tabId) ) { return; }
-        if ( typeof tab.url !== 'string' || tab.url === '' ) { return; }
-        let url = changeInfo.url || tab.url;
-        if ( url ) {
-            push(tabId, url, 'updateURL');
+        µMatrix.unbindTabFromPageStats(tabId);
+        //µMatrix.contextMenu.update();
     }
-    };
 
-    vAPI.tabs.onClosed = function(tabId) {
-        µm.unbindTabFromPageStats(tabId);
-        let entry = tabContexts.get(tabId);
-        if ( entry instanceof TabContext ) {
-            entry.destroy();
+    onCreated(details) {
+        super.onCreated(details);
+        µMatrix.tabContextManager.onTabCreated(details);
     }
-    };
 
-    return {
-        push: push,
-        lookup: lookup,
-        mustLookup: mustLookup,
-        tabIdFromURL: tabIdFromURL
+    // When the DOM content of root frame is loaded, this means the tab
+    // content has changed.
+    //
+    // The webRequest.onBeforeRequest() won't be called for everything
+    // else than http/https. Thus, in such case, we will bind the tab as
+    // early as possible in order to increase the likelihood of a context
+    // properly setup if network requests are fired from within the tab.
+    // Example: Chromium + case #6 at
+    //          http://raymondhill.net/ublock/popup.html
+
+    onNavigation(details) {
+        super.onNavigation(details);
+        const µm = µMatrix;
+        if ( details.frameId === 0 ) {
+            µm.tabContextManager.commit(details.tabId, details.url);
+            µm.bindTabToPageStats(details.tabId, 'tabCommitted');
+        }
+        if ( µm.canInjectScriptletsNow ) {
+            const pageStore = µm.pageStoreFromTabId(details.tabId);
+            if ( pageStore !== null && pageStore.getNetFilteringSwitch() ) {
+                µm.scriptletFilteringEngine.injectNow(details);
+            }
+        }
+    }
+
+    // It may happen the URL in the tab changes, while the page's document
+    // stays the same (for instance, Google Maps). Without this listener,
+    // the extension icon won't be properly refreshed.
+
+    onUpdated(tabId, changeInfo, tab) {
+        super.onUpdated(tabId, changeInfo, tab);
+        if ( typeof tab.url !== 'string' || tab.url === '' ) { return; }
+        if ( typeof changeInfo.url === 'string' && changeInfo.url !== '' ) {
+            µMatrix.tabContextManager.commit(tabId, changeInfo.url);
+            µMatrix.bindTabToPageStats(tabId, 'tabUpdated');
+        }
+        if ( typeof changeInfo.title === 'string' && changeInfo.title !== '' ) {
+            µMatrix.setPageStoreTitle(tabId, changeInfo.title);
+        }
+    }
 };
-})();
 
-vAPI.tabs.registerListeners();
+vAPI.tabs = new vAPI.Tabs();
 
 /******************************************************************************/
 /******************************************************************************/
@@ -435,12 +523,12 @@ vAPI.tabs.registerListeners();
 // Create an entry for the tab if it doesn't exist
 
 µm.bindTabToPageStats = function(tabId, context) {
-    this.updateBadgeAsync(tabId);
+    this.updateToolbarIcon(tabId);
 
     // Do not create a page store for URLs which are of no interests
     // Example: dev console
-    let tabContext = this.tabContextManager.lookup(tabId);
-    if ( tabContext === null ) { return; }
+    const tabContext = this.tabContextManager.lookup(tabId);
+    if ( tabContext === null ) { return null; }
 
     // rhill 2013-11-24: Never ever rebind behind-the-scene
     // virtual tab.
@@ -449,7 +537,7 @@ vAPI.tabs.registerListeners();
         return this.pageStores.get(tabId);
     }
 
-    let normalURL = tabContext.normalURL;
+    const normalURL = tabContext.normalURL;
     let pageStore = this.pageStores.get(tabId);
 
     // The previous page URL, if any, associated with the tab
@@ -466,12 +554,11 @@ vAPI.tabs.registerListeners();
         // https://github.com/gorhill/uMatrix/issues/72
         //   Need to double-check that the new scope is same as old scope
         if (
-            context === 'updateURL' &&
+            context === 'tabUpdated' &&
             pageStore.pageHostname === tabContext.rootHostname
         ) {
             pageStore.rawURL = tabContext.rawURL;
             pageStore.pageUrl = normalURL;
-            this.updateTitle(tabId);
             this.pageStoresToken = Date.now();
             return pageStore;
         }
@@ -486,7 +573,6 @@ vAPI.tabs.registerListeners();
         pageStore = this.pageStoreFactory(tabContext);
     }
     this.pageStores.set(tabId, pageStore);
-    this.updateTitle(tabId);
     this.pageStoresToken = Date.now();
 
     return pageStore;
@@ -497,7 +583,7 @@ vAPI.tabs.registerListeners();
 µm.unbindTabFromPageStats = function(tabId) {
     if ( vAPI.isBehindTheSceneTabId(tabId) ) { return; }
 
-    let pageStore = this.pageStores.get(tabId);
+    const pageStore = this.pageStores.get(tabId);
     if ( pageStore === undefined ) { return; }
 
     this.pageStores.delete(tabId);
@@ -513,11 +599,13 @@ vAPI.tabs.registerListeners();
         this.pageStoreCemetery.set(tabId, (pageStoreCrypt = new Map()));
     }
 
-    let pageURL = pageStore.pageUrl;
+    const pageURL = pageStore.pageUrl;
     pageStoreCrypt.set(pageURL, pageStore);
 
     pageStore.incinerationTimer = vAPI.setTimeout(
-        this.incineratePageStore.bind(this, tabId, pageURL),
+        ( ) => {
+            this.incineratePageStore(tabId, pageURL);
+        },
         4 * 60 * 1000
     );
 };
@@ -580,122 +668,86 @@ vAPI.tabs.registerListeners();
 
 /******************************************************************************/
 
+µm.setPageStoreTitle = function(tabId, title) {
+    const pageStore = this.pageStoreFromTabId(tabId);
+    if ( pageStore === null ) { return; }
+    if ( title === pageStore.title ) { return; }
+    pageStore.title = title;
+    this.pageStoresToken = Date.now();
+};
+
+/******************************************************************************/
+
 µm.forceReload = function(tabId, bypassCache) {
     vAPI.tabs.reload(tabId, bypassCache);
 };
 
 /******************************************************************************/
 
-µm.updateBadgeAsync = (function() {
-    let tabIdToTimer = new Map();
+µMatrix.updateToolbarIcon = (( ) => {
+    const µm = µMatrix;
+    const tabIdToDetails = new Map();
 
-    let updateBadge = function(tabId) {
-        tabIdToTimer.delete(tabId);
+    const updateBadge = tabId => {
+        let parts = tabIdToDetails.get(tabId);
+        tabIdToDetails.delete(tabId);
 
+        let badge = '';
+        let color = '#666';
         let iconId = 'off';
-        let badgeStr = '';
 
-        let pageStore = this.pageStoreFromTabId(tabId);
+        let pageStore = µm.pageStoreFromTabId(tabId);
         if ( pageStore !== null ) {
-            let total = pageStore.perLoadAllowedRequestCount +
-                        pageStore.perLoadBlockedRequestCount;
-            if ( total ) {
-                let squareSize = 19;
-                let greenSize = squareSize * Math.sqrt(
+            const totalBlocked = pageStore.perLoadBlockedRequestCount;
+            const total = pageStore.perLoadAllowedRequestCount + totalBlocked;
+            const squareSize = 19;
+            if ( total !== 0 ) {
+                const greenSize = squareSize * Math.sqrt(
                     pageStore.perLoadAllowedRequestCount / total
                 );
                 iconId = greenSize < squareSize / 2 ?
                     Math.ceil(greenSize) :
                     Math.floor(greenSize);
+            } else {
+                iconId = squareSize;
             }
-            if (
-                this.userSettings.iconBadgeEnabled &&
-                pageStore.perLoadBlockedRequestCount !== 0
-            ) {
-                badgeStr = this.formatCount(pageStore.perLoadBlockedRequestCount);
+            if ( totalBlocked !== 0 && (parts & 0b0010) !== 0 ) {
+                badge = µm.formatCount(totalBlocked);
             }
         }
 
-        vAPI.setIcon(
-            tabId,
-            'img/browsericons/icon19-' + iconId + '.png',
-            { text: badgeStr, color: '#666' }
-        );
-    };
-
-    return function(tabId) {
-        if ( tabIdToTimer.has(tabId) ) { return; }
-        if ( vAPI.isBehindTheSceneTabId(tabId) ) { return; }
-        tabIdToTimer.set(
-            tabId,
-            vAPI.setTimeout(updateBadge.bind(this, tabId), 750)
-        );
-    };
-})();
-
-/******************************************************************************/
-
-µm.updateTitle = (function() {
-    let tabIdToTimer = new Map();
-    let tabIdToTryCount = new Map();
-    let delay = 499;
-
-    let tryNoMore = function(tabId) {
-        tabIdToTryCount.delete(tabId);
-    };
-
-    let tryAgain = function(tabId) {
-        let count = tabIdToTryCount.get(tabId);
-        if ( count === undefined ) { return false; }
-        if ( count === 1 ) {
-            tabIdToTryCount.delete(tabId);
-            return false;
+        // https://www.reddit.com/r/uBlockOrigin/comments/d33d37/
+        if ( µm.userSettings.iconBadgeEnabled === false ) {
+            parts |= 0b1000;
         }
-        tabIdToTryCount.set(tabId, count - 1);
-        tabIdToTimer.set(
-            tabId,
-            vAPI.setTimeout(updateTitle.bind(µm, tabId), delay)
-        );
-        return true;
-    };
 
-    var onTabReady = function(tabId, tab) {
-        if ( !tab ) {
-            return tryNoMore(tabId);
-        }
-        var pageStore = this.pageStoreFromTabId(tabId);
-        if ( pageStore === null ) {
-            return tryNoMore(tabId);
-        }
-        if ( !tab.title && tryAgain(tabId) ) {
-            return;
-        }
-        // https://github.com/gorhill/uMatrix/issues/225
-        // Sometimes title changes while page is loading.
-        var settled = tab.title && tab.title === pageStore.title;
-        pageStore.title = tab.title || tab.url || '';
-        this.pageStoresToken = Date.now();
-        if ( settled || !tryAgain(tabId) ) {
-            tryNoMore(tabId);
-        }
+        vAPI.setIcon(tabId, {
+            parts,
+            src: `/img/browsericons/icon19-${iconId}.png`,
+            badge,
+            color
+        });
     };
 
-    var updateTitle = function(tabId) {
-        tabIdToTimer.delete(tabId);
-        vAPI.tabs.get(tabId, onTabReady.bind(this, tabId));
-    };
+    // parts: bit 0 = icon
+    //        bit 1 = badge text
+    //        bit 2 = badge color
+    //        bit 3 = hide badge
 
-    return function(tabId) {
+    return function(tabId, newParts = 0b0111) {
+        if ( typeof tabId !== 'number' ) { return; }
         if ( vAPI.isBehindTheSceneTabId(tabId) ) { return; }
-        let timer = tabIdToTimer.get(tabId);
-        if ( timer !== undefined ) {
-            clearTimeout(timer);
-        }
-        tabIdToTimer.set(
-            tabId,
-            vAPI.setTimeout(updateTitle.bind(this, tabId), delay)
+        const currentParts = tabIdToDetails.get(tabId);
+        if ( currentParts === newParts ) { return; }
+        if ( currentParts === undefined ) {
+            self.requestIdleCallback(
+                ( ) => updateBadge(tabId),
+                { timeout: 701 }
             );
-        tabIdToTryCount.set(tabId, 5);
+        } else {
+            newParts |= currentParts;
+        }
+        tabIdToDetails.set(tabId, newParts);
     };
 })();
 
@@ -704,28 +756,25 @@ vAPI.tabs.registerListeners();
 // Stale page store entries janitor
 // https://github.com/chrisaljoudi/uBlock/issues/455
 
-(function() {
-    var cleanupPeriod = 7 * 60 * 1000;
-    var cleanupSampleAt = 0;
-    var cleanupSampleSize = 11;
-
-    var cleanup = function() {
-        var vapiTabs = vAPI.tabs;
-        var tabIds = Array.from(µm.pageStores.keys()).sort();
-        var checkTab = function(tabId) {
-            vapiTabs.get(tabId, function(tab) {
-                if ( !tab ) {
+{
+    const cleanupPeriod = 7 * 60 * 1000;
+    const cleanupSampleSize = 11;
+    let cleanupSampleAt = 0;
+
+    const cleanup = function() {
+        const tabIds = Array.from(µm.pageStores.keys()).sort();
+        const checkTab = function(tabId) {
+            vAPI.tabs.get(tabId).then(tab => {
+                if ( tab instanceof Object ) { return; }
                 µm.unbindTabFromPageStats(tabId);
-                }
             });
         };
         if ( cleanupSampleAt >= tabIds.length ) {
             cleanupSampleAt = 0;
         }
-        var tabId;
-        var n = Math.min(cleanupSampleAt + cleanupSampleSize, tabIds.length);
-        for ( var i = cleanupSampleAt; i < n; i++ ) {
-            tabId = tabIds[i];
+        const n = Math.min(cleanupSampleAt + cleanupSampleSize, tabIds.length);
+        for ( let i = cleanupSampleAt; i < n; i++ ) {
+            const tabId = tabIds[i];
             if ( vAPI.isBehindTheSceneTabId(tabId) ) { continue; }
             checkTab(tabId);
         }
@@ -735,7 +784,7 @@ vAPI.tabs.registerListeners();
     };
 
     vAPI.setTimeout(cleanup, cleanupPeriod);
-})();
+}
 
 /******************************************************************************/
 

src/js/traffic.js

@@ -25,45 +25,56 @@
 
 // Start isolation from global scope
 
-µMatrix.webRequest = (function() {
+µMatrix.webRequest = (( ) => {
 
 /******************************************************************************/
 
 // Intercept and filter web requests according to white and black lists.
 
-var onBeforeRootFrameRequestHandler = function(details) {
-    let µm = µMatrix;
-    let desURL = details.url;
-    let desHn = µm.URI.hostnameFromURI(desURL);
-    let type = requestTypeNormalizer[details.type] || 'other';
-    let tabId = details.tabId;
-
-    µm.tabContextManager.push(tabId, desURL);
-
-    let tabContext = µm.tabContextManager.mustLookup(tabId);
-    let srcHn = tabContext.rootHostname;
+const onBeforeRootFrameRequestHandler = function(fctxt) {
+    const µm = µMatrix;
+    const desURL = fctxt.url;
+    const desHn = fctxt.getHostname();
+    const type = fctxt.type;
+    const tabId = fctxt.tabId;
+    const srcHn = fctxt.getTabHostname();
 
     // Disallow request as per matrix?
-    let blocked = µm.mustBlock(srcHn, desHn, type);
+    const blocked = µm.mustBlock(srcHn, desHn, type);
 
-    let pageStore = µm.pageStoreFromTabId(tabId);
+    const pageStore = µm.bindTabToPageStats(tabId);
+    if ( pageStore !== null ) {
         pageStore.recordRequest(type, desURL, blocked);
         pageStore.perLoadAllowedRequestCount = 0;
         pageStore.perLoadBlockedRequestCount = 0;
-    µm.logger.writeOne({ tabId, srcHn, desHn, desURL, type, blocked });
+        pageStore.perLoadBlockedReferrerCount = 0;
+        if ( blocked !== true ) {
+            µm.cookieHunter.recordPageCookies(pageStore);
+        }
+        if ( fctxt.aliasURL !== undefined ) {
+            pageStore.hasHostnameAliases = true;
+        }
+    }
+    if ( µm.logger.enabled ) {
+        fctxt.setRealm('network').setFilter(blocked).toLogger();
+    }
 
     // Not blocked
-    if ( !blocked ) {
-        let redirectURL = maybeRedirectRootFrame(desHn, desURL);
-        if ( redirectURL !== desURL ) {
-            return { redirectUrl: redirectURL };
+    if ( blocked !== true ) {
+        const redirectUrl = maybeRedirectRootFrame(desHn, desURL);
+        if ( redirectUrl !== desURL ) {
+            return { redirectUrl };
+        }
+        if ( µm.tMatrix.evaluateSwitchZ('cname-reveal', srcHn) === false ) {
+            return { cancel: false };
         }
-        µm.cookieHunter.recordPageCookies(pageStore);
         return;
     }
 
     // Blocked
-    let query = btoa(JSON.stringify({ url: desURL, hn: desHn, type, why: '?' }));
+    const query = encodeURIComponent(
+        JSON.stringify({ url: desURL, hn: desHn, type, why: '?' })
+    );
 
     vAPI.tabs.replace(tabId, vAPI.getURL('main-blocked.html?details=') + query);
 
@@ -74,18 +85,18 @@ var onBeforeRootFrameRequestHandler = function(details) {
 
 // https://twitter.com/thatcks/status/958776519765225473
 
-var maybeRedirectRootFrame = function(hostname, url) {
-    let µm = µMatrix;
+const maybeRedirectRootFrame = function(hostname, url) {
+    const µm = µMatrix;
     if ( µm.rawSettings.enforceEscapedFragment !== true ) { return url; }
-    let block1pScripts = µm.mustBlock(hostname, hostname, 'script');
-    let reEscapedFragment = /[?&]_escaped_fragment_=/;
+    const block1pScripts = µm.mustBlock(hostname, hostname, 'script');
+    const reEscapedFragment = /[?&]_escaped_fragment_=/;
     if ( reEscapedFragment.test(url) ) {
         return block1pScripts ? url : url.replace(reEscapedFragment, '#!') ;
     }
     if ( block1pScripts === false ) { return url; }
-    let pos = url.indexOf('#!');
+    const pos = url.indexOf('#!');
     if ( pos === -1 ) { return url; }
-    let separator = url.lastIndexOf('?', pos) === -1 ? '?' : '&';
+    const separator = url.lastIndexOf('?', pos) === -1 ? '?' : '&';
     return url.slice(0, pos) +
            separator + '_escaped_fragment_=' +
            url.slice(pos + 2);
@@ -95,21 +106,24 @@ var maybeRedirectRootFrame = function(hostname, url) {
 
 // Intercept and filter web requests according to white and black lists.
 
-var onBeforeRequestHandler = function(details) {
-    let µm = µMatrix,
-        µmuri = µm.URI,
-        desURL = details.url,
-        desScheme = µmuri.schemeFromURI(desURL);
+const onBeforeRequestHandler = function(details) {
+    const µm = µMatrix;
+    const fctxt = µm.filteringContext.fromWebrequestDetails(details);
+    const µmuri = µm.URI;
+    const desURL = fctxt.url;
+    const desScheme = µmuri.schemeFromURI(desURL);
 
-    if ( µmuri.isNetworkScheme(desScheme) === false ) { return; }
+    if ( µmuri.isNetworkScheme(desScheme) === false ) {
+        return { cancel: false };
+    }
 
-    let type = requestTypeNormalizer[details.type] || 'other';
+    const type = fctxt.type;
 
     // https://github.com/gorhill/httpswitchboard/issues/303
     // Wherever the main doc comes from, create a receiver page URL: synthetize
     // one if needed.
     if ( type === 'doc' && details.parentFrameId === -1 ) {
-        return onBeforeRootFrameRequestHandler(details);
+        return onBeforeRootFrameRequestHandler(fctxt);
     }
 
     // Re-classify orphan HTTP requests as behind-the-scene requests. There is
@@ -119,30 +133,11 @@ var onBeforeRequestHandler = function(details) {
     // to scope on unknown scheme? Etc.
     // https://github.com/gorhill/httpswitchboard/issues/191
     // https://github.com/gorhill/httpswitchboard/issues/91#issuecomment-37180275
-    let tabContext = µm.tabContextManager.mustLookup(details.tabId),
-        tabId = tabContext.tabId,
-        srcHn = tabContext.rootHostname,
-        desHn = µmuri.hostnameFromURI(desURL),
-        docURL = details.documentUrl,
-        specificity = 0;
-
-    if ( docURL !== undefined ) {
-        // Extract context from initiator for behind-the-scene requests.
-        if ( tabId < 0 ) {
-            srcHn = µmuri.hostnameFromURI(µm.normalizePageURL(0, docURL));
-        }
-        // https://github.com/uBlockOrigin/uMatrix-issues/issues/72
-        //   Workaround of weird Firefox behavior: when a service worker exists
-        //   for a site, the `doc` requests when loading a page from that site
-        //   are not being made: this potentially prevents uMatrix to properly
-        //   keep track of the context in which requests are made.
-        else if (
-            details.parentFrameId === -1 &&
-            docURL !== tabContext.rawURL
-        ) {
-            srcHn = µmuri.hostnameFromURI(µm.normalizePageURL(0, docURL));
-        }
-    }
+    const tabContext = µm.tabContextManager.mustLookup(details.tabId);
+    const tabId = fctxt.tabId;
+    const srcHn = fctxt.getTabHostname();
+    const desHn = fctxt.getHostname();
+    let specificity = 0;
 
     let blocked = µm.tMatrix.mustBlock(srcHn, desHn, type);
     if ( blocked ) {
@@ -155,7 +150,7 @@ var onBeforeRequestHandler = function(details) {
     // processing has already been performed, and that a synthetic URL has
     // been constructed for logging purpose. Use this synthetic URL if
     // it is available.
-    let pageStore = µm.mustPageStoreFromTabId(tabId);
+    const pageStore = µm.mustPageStoreFromTabId(tabId);
 
     // Enforce strict secure connection?
     if ( tabContext.secure && µmuri.isSecureScheme(desScheme) === false ) {
@@ -165,14 +160,22 @@ var onBeforeRequestHandler = function(details) {
         }
     }
 
+    if ( fctxt.aliasURL !== undefined ) {
+        pageStore.hasHostnameAliases = true;
+    }
+
     pageStore.recordRequest(type, desURL, blocked);
     if ( µm.logger.enabled ) {
-        µm.logger.writeOne({ tabId, srcHn, desHn, desURL, type, blocked });
+        fctxt.setRealm('network').setFilter(blocked).toLogger();
     }
 
     if ( blocked ) {
         pageStore.cacheBlockedCollapsible(type, desURL, specificity);
-        return { 'cancel': true };
+        return { cancel: true };
+    }
+
+    if ( µm.tMatrix.evaluateSwitchZ('cname-reveal', srcHn) === false ) {
+        return { cancel: false };
     }
 };
 
@@ -180,36 +183,15 @@ var onBeforeRequestHandler = function(details) {
 
 // Sanitize outgoing headers as per user settings.
 
-var onBeforeSendHeadersHandler = function(details) {
-    let µm = µMatrix,
-        µmuri = µm.URI,
-        desURL = details.url,
-        desScheme = µmuri.schemeFromURI(desURL);
+const onBeforeSendHeadersHandler = function(details) {
+    const µm = µMatrix;
+    const µmuri = µm.URI;
+    const fctxt = µm.filteringContext.fromWebrequestDetails(details);
 
     // Ignore non-network schemes
-    if ( µmuri.isNetworkScheme(desScheme) === false ) { return; }
-
-    // Re-classify orphan HTTP requests as behind-the-scene requests. There is
-    // not much else which can be done, because there are URLs
-    // which cannot be handled by HTTP Switchboard, i.e. `opera://startpage`,
-    // as this would lead to complications with no obvious solution, like how
-    // to scope on unknown scheme? Etc.
-    // https://github.com/gorhill/httpswitchboard/issues/191
-    // https://github.com/gorhill/httpswitchboard/issues/91#issuecomment-37180275
-    const tabId = details.tabId;
-    const pageStore = µm.mustPageStoreFromTabId(tabId);
-    const desHn = µmuri.hostnameFromURI(desURL);
-    const requestType = requestTypeNormalizer[details.type] || 'other';
-    const requestHeaders = details.requestHeaders;
-
-    // https://github.com/uBlockOrigin/uMatrix-issues/issues/155
-    // https://github.com/uBlockOrigin/uMatrix-issues/issues/159
-    //   TODO: import all filtering context improvements from uBO.
-    const srcHn = tabId < 0 ||
-          details.parentFrameId < 0 ||
-          details.parentFrameId === 0 && details.type === 'sub_frame'
-        ? µmuri.hostnameFromURI(details.documentUrl) || pageStore.pageHostname
-        : pageStore.pageHostname;
+    if ( µmuri.isNetworkScheme(µmuri.schemeFromURI(fctxt.url)) === false ) {
+        return;
+    }
 
     // https://github.com/gorhill/httpswitchboard/issues/342
     // Is this hyperlink auditing?
@@ -232,18 +214,8 @@ var onBeforeSendHeadersHandler = function(details) {
     // With hyperlink-auditing, removing header(s) is pointless, the whole
     // request must be cancelled.
 
-    let headerIndex = headerIndexFromName('ping-to', requestHeaders);
-    if ( headerIndex !== -1 ) {
-        let headerValue = requestHeaders[headerIndex].value;
-        if ( headerValue !== '' ) {
-            let blocked = µm.userSettings.processHyperlinkAuditing;
-            pageStore.recordRequest('other', desURL + '{Ping-To:' + headerValue + '}', blocked);
-            µm.logger.writeOne({ tabId, srcHn, desHn, desURL, type: 'ping', blocked });
-            if ( blocked ) {
-                µm.hyperlinkAuditingFoiledCounter += 1;
-                return { 'cancel': true };
-            }
-        }
+    if ( onBeforeSendPing(fctxt, details) ) {
+        return { cancel: true };
     }
 
     // If we reach this point, request is not blocked, so what is left to do
@@ -253,24 +225,8 @@ var onBeforeSendHeadersHandler = function(details) {
 
     // Process `Cookie` header.
 
-    headerIndex = headerIndexFromName('cookie', requestHeaders);
-    if (
-        headerIndex !== -1 &&
-        µm.mustBlock(srcHn, desHn, 'cookie')
-    ) {
+    if ( onBeforeSendCookie(fctxt, details) ) {
         modified = true;
-        let headerValue = requestHeaders[headerIndex].value;
-        requestHeaders.splice(headerIndex, 1);
-        µm.cookieHeaderFoiledCounter++;
-        if ( requestType === 'doc' ) {
-            pageStore.perLoadBlockedRequestCount++;
-            µm.logger.writeOne({
-                tabId,
-                srcHn,
-                header: { name: 'COOKIE', value: headerValue },
-                change: -1
-            });
-        }
     }
 
     // Process `Referer` header.
@@ -293,50 +249,132 @@ var onBeforeSendHeadersHandler = function(details) {
     // https://github.com/gorhill/uMatrix/issues/773
     //   For non-GET requests, remove `Referer` header instead of spoofing it.
 
-    headerIndex = headerIndexFromName('referer', requestHeaders);
-    if ( headerIndex !== -1 ) {
-        let headerValue = requestHeaders[headerIndex].value;
-        if ( headerValue !== '' ) {
-            let toDomain = µmuri.domainFromHostname(desHn);
-            if ( toDomain !== '' && toDomain !== µmuri.domainFromURI(headerValue) ) {
-                pageStore.has3pReferrer = true;
-                if ( µm.tMatrix.evaluateSwitchZ('referrer-spoof', srcHn) ) {
+    if ( onBeforeSendReferrer(fctxt, details) ) {
         modified = true;
-                    let newValue;
+    }
+
+    if ( modified !== true ) { return; }
+
+    µm.updateToolbarIcon(fctxt.tabId);
+
+    return { requestHeaders: details.requestHeaders };
+};
+
+/******************************************************************************/
+
+const onBeforeSendPing = function(fctxt, details) {
+    const requestHeaders = details.requestHeaders;
+    const iHeader = headerIndexFromName('ping-to', requestHeaders);
+    if ( iHeader === -1 ) { return false; }
+
+    const headerValue = requestHeaders[iHeader].value;
+    if ( headerValue === '' ) { return false; }
+
+    const µm = µMatrix;
+    const blocked = µm.userSettings.processHyperlinkAuditing;
+
+    const pageStore = µm.mustPageStoreFromTabId(fctxt.tabId);
+    pageStore.recordRequest(
+        'other',
+        fctxt.url + '{Ping-To:' + headerValue + '}',
+        blocked
+    );
+
+    if ( µm.logger.enabled ) {
+        fctxt.setRealm('network')
+             .setType('ping')
+             .setFilter(blocked)
+             .toLogger();
+    }
+
+    if ( blocked === false ) { return false; }
+
+    µm.hyperlinkAuditingFoiledCounter += 1;
+    return true;
+};
+
+/******************************************************************************/
+
+const onBeforeSendCookie = function(fctxt, details) {
+    const requestHeaders = details.requestHeaders;
+    const iHeader = headerIndexFromName('cookie', requestHeaders);
+    if ( iHeader === -1 ) { return false; }
+
+    const µm = µMatrix;
+    const blocked = µm.mustBlock(
+        fctxt.getTabHostname(),
+        fctxt.getHostname(),
+        'cookie'
+    );
+    if ( blocked === false ) { return false; }
+
+    const headerValue = requestHeaders[iHeader].value;
+    requestHeaders.splice(iHeader, 1);
+    µm.cookieHeaderFoiledCounter++;
+
+    if ( fctxt.type === 'doc' ) {
+        const pageStore = µm.mustPageStoreFromTabId(fctxt.tabId);
+        pageStore.perLoadBlockedRequestCount++;
+        if ( µm.logger.enabled ) {
+            fctxt.setRealm('network')
+                 .setType('COOKIE')
+                 .setFilter({ value: headerValue, change: -1 })
+                 .toLogger();
+        }
+    }
+
+    return true;
+};
+
+/******************************************************************************/
+
+const onBeforeSendReferrer = function(fctxt, details) {
+    const requestHeaders = details.requestHeaders;
+    const iHeader = headerIndexFromName('referer', requestHeaders);
+    if ( iHeader === -1 ) { return false; }
+
+    const referrer = requestHeaders[iHeader].value;
+    if ( referrer === '' ) { return false; }
+
+    const toDomain = vAPI.domainFromHostname(fctxt.getHostname());
+    if ( toDomain === '' || toDomain === vAPI.domainFromURI(referrer) ) {
+        return false;
+    }
+
+    const µm = µMatrix;
+    const pageStore = µm.mustPageStoreFromTabId(fctxt.tabId);
+    pageStore.has3pReferrer = true;
+
+    const mustSpoof =
+        µm.tMatrix.evaluateSwitchZ('referrer-spoof', fctxt.getTabHostname());
+    if ( mustSpoof === false ) { return false; }
+
+    let spoofedReferrer;
     if ( details.method === 'GET' ) {
-                        newValue = requestHeaders[headerIndex].value =
-                            desScheme + '://' + desHn + '/';
+        spoofedReferrer = requestHeaders[iHeader].value =
+            fctxt.originFromURI(fctxt.url) + '/';
     } else {
-                        requestHeaders.splice(headerIndex, 1);
+        requestHeaders.splice(iHeader, 1);
     }
+
     if ( pageStore.perLoadBlockedReferrerCount === 0 ) {
         pageStore.perLoadBlockedRequestCount += 1;
-                        µm.logger.writeOne({
-                            tabId,
-                            srcHn,
-                            header: { name: 'REFERER', value: headerValue },
-                            change: -1
-                        });
-                        if ( newValue !== undefined ) {
-                            µm.logger.writeOne({
-                                tabId,
-                                srcHn,
-                                header: { name: 'REFERER', value: newValue },
-                                change: +1
-                            });
-                        }
-                    }
-                    pageStore.perLoadBlockedReferrerCount += 1;
-                }
+        if ( µm.logger.enabled ) {
+            fctxt.setRealm('network')
+                 .setType('REFERER')
+                 .setFilter({ value: referrer, change: -1 })
+                 .toLogger();
+            if ( spoofedReferrer !== undefined ) {
+                fctxt.setRealm('network')
+                     .setType('REFERER')
+                     .setFilter({ value: spoofedReferrer, change: +1 })
+                     .toLogger();
             }
         }
     }
+    pageStore.perLoadBlockedReferrerCount += 1;
 
-    if ( modified !== true ) { return; }
-
-    µm.updateBadgeAsync(tabId);
-
-    return { requestHeaders: requestHeaders };
+    return true;
 };
 
 /******************************************************************************/
@@ -349,32 +387,26 @@ var onBeforeSendHeadersHandler = function(details) {
 // This fixes:
 // https://github.com/gorhill/httpswitchboard/issues/35
 
-var onHeadersReceivedHandler = function(details) {
-    // Ignore schemes other than 'http...'
-    let µm = µMatrix,
-        tabId = details.tabId,
-        requestURL = details.url,
-        requestType = requestTypeNormalizer[details.type] || 'other',
-        headers = details.responseHeaders;
+const onHeadersReceivedHandler = function(details) {
+    const µm = µMatrix;
+    const fctxt = µm.filteringContext.fromWebrequestDetails(details);
+    const requestType = fctxt.type;
+    const headers = details.responseHeaders;
 
     // https://github.com/gorhill/uMatrix/issues/145
     // Check if the main_frame is a download
     if ( requestType === 'doc' ) {
-        µm.tabContextManager.push(tabId, requestURL);
-        let contentType = typeFromHeaders(headers);
+        const contentType = typeFromHeaders(headers);
         if ( contentType !== undefined ) {
             details.type = contentType;
-            return onBeforeRootFrameRequestHandler(details);
+            return onBeforeRootFrameRequestHandler(fctxt);
         }
     }
 
-    let tabContext = µm.tabContextManager.lookup(tabId);
-    if ( tabContext === null ) { return; }
-
-    let csp = [],
-        cspReport = [],
-        srcHn = tabContext.rootHostname,
-        desHn = µm.URI.hostnameFromURI(requestURL);
+    const csp = [];
+    const cspReport = [];
+    const srcHn = fctxt.getTabHostname();
+    const desHn = fctxt.getHostname();
 
     // Inline script tags.
     if ( µm.mustBlock(srcHn, desHn, 'script' ) ) {
@@ -401,7 +433,7 @@ var onHeadersReceivedHandler = function(details) {
     //   them here.
 
     if ( csp.length !== 0 ) {
-        let cspRight = csp.join(', ');
+        const cspRight = csp.join(', ');
         let cspTotal = cspRight;
         if ( µm.cantMergeCSPHeaders ) {
             let i = headerIndexFromName(
@@ -417,18 +449,16 @@ var onHeadersReceivedHandler = function(details) {
             name: 'Content-Security-Policy',
             value: cspTotal
         });
-        if ( requestType === 'doc' ) {
-            µm.logger.writeOne({
-                tabId,
-                srcHn,
-                header: { name: 'CSP', value: cspRight },
-                change: +1
-            });
+        if ( µm.logger.enabled && requestType === 'doc' ) {
+            fctxt.setRealm('network')
+                 .setType('CSP')
+                 .setFilter({ value: cspRight, change: +1 })
+                 .toLogger();
         }
     }
 
     if ( cspReport.length !== 0 ) {
-        let cspRight = cspReport.join(', ');
+        const cspRight = cspReport.join(', ');
         let cspTotal = cspRight;
         if ( µm.cantMergeCSPHeaders ) {
             let i = headerIndexFromName(
@@ -469,8 +499,8 @@ window.addEventListener('webextFlavor', function() {
 
 // Caller must ensure headerName is normalized to lower case.
 
-var headerIndexFromName = function(headerName, headers) {
-    var i = headers.length;
+const headerIndexFromName = function(headerName, headers) {
+    let i = headers.length;
     while ( i-- ) {
         if ( headers[i].name.toLowerCase() === headerName ) {
             return i;
@@ -483,33 +513,16 @@ var headerIndexFromName = function(headerName, headers) {
 
 // Extract request type from content headers.
 
-let typeFromHeaders = function(headers) {
-    let i = headerIndexFromName('content-type', headers);
+const typeFromHeaders = function(headers) {
+    const i = headerIndexFromName('content-type', headers);
     if ( i === -1 ) { return; }
-    let mime = headers[i].value.toLowerCase();
+    const mime = headers[i].value.toLowerCase();
     if ( mime.startsWith('image/') ) { return 'image'; }
     if ( mime.startsWith('video/') || mime.startsWith('audio/') ) {
         return 'media';
     }
 };
 
-/******************************************************************************/
-
-var requestTypeNormalizer = {
-    'font'          : 'css',
-    'image'         : 'image',
-    'imageset'      : 'image',
-    'main_frame'    : 'doc',
-    'media'         : 'media',
-    'object'        : 'media',
-    'other'         : 'other',
-    'script'        : 'script',
-    'stylesheet'    : 'css',
-    'sub_frame'     : 'frame',
-    'websocket'     : 'xhr',
-    'xmlhttprequest': 'xhr'
-};
-
 /*******************************************************************************
 
  Use a `http-equiv` `meta` tag to enforce CSP directives for documents
@@ -517,11 +530,11 @@ var requestTypeNormalizer = {
  handler to be called).
 
  Idea borrowed from NoScript:
- https://github.com/hackademix/noscript/commit/6e80d3f130773fc9a9123c5c4c2e97d63e90fa2a
+ https://github.com/hackademix/noscript/commit/6e80d3f13077
 
 **/
 
-(function() {
+(( ) => {
     if (
         typeof self.browser !== 'object' ||
         typeof browser.contentScripts !== 'object'
@@ -529,7 +542,7 @@ var requestTypeNormalizer = {
         return;
     }
 
-    let csRules = [
+    const csRules = [
         {
             name: 'script',
             file: '/js/contentscript-no-inline-script.js',
@@ -539,7 +552,7 @@ var requestTypeNormalizer = {
         },
     ];
 
-    let csSwitches = [
+    const csSwitches = [
         {
             name: 'no-workers',
             file: '/js/contentscript-no-workers.js',
@@ -549,7 +562,7 @@ var requestTypeNormalizer = {
         },
     ];
 
-    let register = function(entry) {
+    const register = function(entry) {
         if ( entry.pending !== undefined ) { return; }
         entry.pending = browser.contentScripts.register({
             js: [ { file: entry.file } ],
@@ -569,16 +582,16 @@ var requestTypeNormalizer = {
         );
     };
 
-    let unregister = function(entry) {
+    const unregister = function(entry) {
         if ( entry.registered === undefined ) { return; }
         entry.registered.unregister();
         entry.registered = undefined;
     };
 
-    let handler = function(ev) {
-        let matrix = ev && ev.detail;
+    const handler = function(ev) {
+        const matrix = ev && ev.detail;
         if ( matrix !== µMatrix.tMatrix ) { return; }
-        for ( let cs of csRules ) {
+        for ( const cs of csRules ) {
             cs.mustRegister = matrix.mustBlock('file-scheme', 'file-scheme', cs.name);
             if ( cs.mustRegister === (cs.registered !== undefined) ) { continue; }
             if ( cs.mustRegister ) {
@@ -587,7 +600,7 @@ var requestTypeNormalizer = {
                 unregister(cs);
             }
         }
-        for ( let cs of csSwitches ) {
+        for ( const cs of csSwitches ) {
             cs.mustRegister = matrix.evaluateSwitchZ(cs.name, 'file-scheme');
             if ( cs.mustRegister === (cs.registered !== undefined) ) { continue; }
             if ( cs.mustRegister ) {
@@ -603,25 +616,21 @@ var requestTypeNormalizer = {
 
 /******************************************************************************/
 
-const start = (function() {
+return {
+    start: (( ) => {
+        vAPI.net = new vAPI.Net();
+
         if (
-        vAPI.net.onBeforeReady instanceof Object &&
-        (
-            vAPI.net.onBeforeReady.experimental !== true ||
-            µMatrix.rawSettings.suspendTabsUntilReady
-        )
+            vAPI.net.canSuspend() &&
+            µMatrix.rawSettings.suspendTabsUntilReady !== 'no' ||
+            vAPI.net.canSuspend() !== true &&
+            µMatrix.rawSettings.suspendTabsUntilReady === 'yes'
         ) {
-        vAPI.net.onBeforeReady.start();
+            vAPI.net.suspend(true);
         }
 
         return function() {
-        vAPI.net.addListener(
-            'onBeforeRequest',
-            onBeforeRequestHandler,
-            { },
-            [ 'blocking' ]
-        );
-
+            vAPI.net.setSuspendableListener(onBeforeRequestHandler);
             // https://github.com/uBlockOrigin/uMatrix-issues/issues/74#issuecomment-450687707
             // https://groups.google.com/a/chromium.org/forum/#!topic/chromium-extensions/vYIaeezZwfQ
             //   Chromium 72+: use `extraHeaders` to keep the ability to access
@@ -640,21 +649,19 @@ const start = (function() {
                 { },
                 beforeSendHeadersExtra
             );
-
             vAPI.net.addListener(
                 'onHeadersReceived',
                 onHeadersReceivedHandler,
-            { types: [ 'main_frame', 'sub_frame' ] },
+                {
+                    types: [ 'main_frame', 'sub_frame' ],
+                    urls: [ 'http://*/*', 'https://*/*' ],
+                },
                 [ 'blocking', 'responseHeaders' ]
             );
-
-        if ( vAPI.net.onBeforeReady instanceof Object ) {
-            vAPI.net.onBeforeReady.stop(onBeforeRequestHandler);
-        }
+            vAPI.net.unsuspend(true);
+        };
+    })(),
 };
-})();
-
-return { start };
 
 /******************************************************************************/
 

src/js/uritools.js

@@ -19,8 +19,6 @@
     Home: https://github.com/gorhill/uMatrix
 */
 
-/* global publicSuffixList, punycode */
-
 'use strict';
 
 /*******************************************************************************
@@ -44,13 +42,11 @@ Naming convention from https://en.wikipedia.org/wiki/URI_scheme#Examples
 // <http://jsperf.com/old-uritools-vs-new-uritools>
 // Performance improvements welcomed.
 // jsperf: <http://jsperf.com/old-uritools-vs-new-uritools>
-var reRFC3986 = /^([^:\/?#]+:)?(\/\/[^\/?#]*)?([^?#]*)(\?[^#]*)?(#.*)?/;
+const reRFC3986 = /^([^:\/?#]+:)?(\/\/[^\/?#]*)?([^?#]*)(\?[^#]*)?(#.*)?/;
 
 // Derived
-var reSchemeFromURI          = /^[^:\/?#]+:/;
-var reAuthorityFromURI       = /^(?:[^:\/?#]+:)?(\/\/[^\/?#]+)/;
-var reCommonHostnameFromURL  = /^https?:\/\/([0-9a-z_][0-9a-z._-]*[0-9a-z])\//;
-var reMustNormalizeHostname  = /[^0-9a-z._-]/;
+const reSchemeFromURI = /^[a-z][0-9a-z+.-]+:/;
+const reOriginFromURI = /^(?:[^:\/?#]+:)\/\/[^\/?#]+/;
 
 // These are to parse authority field, not parsed by above official regex
 // IPv6 is seen as an exception: a non-compatible IPv6 is first tried, and
@@ -60,15 +56,10 @@ var reMustNormalizeHostname  = /[^0-9a-z._-]/;
 // https://github.com/gorhill/httpswitchboard/issues/211
 // "While a hostname may not contain other characters, such as the
 // "underscore character (_), other DNS names may contain the underscore"
-var reHostPortFromAuthority  = /^(?:[^@]*@)?([^:]*)(:\d*)?$/;
-var reIPv6PortFromAuthority  = /^(?:[^@]*@)?(\[[0-9a-f:]*\])(:\d*)?$/i;
-
-var reHostFromNakedAuthority = /^[0-9a-z._-]+[0-9a-z]$/i;
-var reHostFromAuthority      = /^(?:[^@]*@)?([^:]+)(?::\d*)?$/;
-var reIPv6FromAuthority      = /^(?:[^@]*@)?(\[[0-9a-f:]+\])(?::\d*)?$/i;
+const reHostPortFromAuthority  = /^(?:[^@]*@)?([^:]*)(:\d*)?$/;
+const reIPv6PortFromAuthority  = /^(?:[^@]*@)?(\[[0-9a-f:]*\])(:\d*)?$/i;
 
-// Coarse (but fast) tests
-var reIPAddressNaive         = /^\d+\.\d+\.\d+\.\d+$|^\[[\da-zA-Z:]+\]$/;
+const reHostFromNakedAuthority = /^[0-9a-z._-]+[0-9a-z]$/i;
 
 // Accurate tests
 // Source.: http://stackoverflow.com/questions/5284147/validating-ipv4-addresses-with-regexp/5284410#5284410
@@ -103,7 +94,7 @@ var resetAuthority = function(o) {
 
 // This will be exported
 
-var URI = {
+const URI = {
     scheme:      '',
     authority:   '',
     hostname:    '',
@@ -226,11 +217,16 @@ URI.assemble = function(bits) {
 
 /******************************************************************************/
 
+URI.originFromURI = function(uri) {
+    const matches = reOriginFromURI.exec(uri);
+    return matches !== null ? matches[0].toLowerCase() : '';
+};
+
+/******************************************************************************/
+
 URI.schemeFromURI = function(uri) {
-    var matches = reSchemeFromURI.exec(uri);
-    if ( matches === null ) {
-        return '';
-    }
+    const matches = reSchemeFromURI.exec(uri);
+    if ( matches === null ) { return ''; }
     return matches[0].slice(0, -1).toLowerCase();
 };
 
@@ -252,138 +248,9 @@ URI.reSecureScheme = /^(?:https|wss|ftps)\b/;
 
 /******************************************************************************/
 
-// The most used function, so it better be fast.
-
-// https://github.com/gorhill/uBlock/issues/1559
-//   See http://en.wikipedia.org/wiki/FQDN
-// https://bugzilla.mozilla.org/show_bug.cgi?id=1360285
-//   Revisit punycode dependency when above issue is fixed in Firefox.
-
-URI.hostnameFromURI = function(uri) {
-    var matches = reCommonHostnameFromURL.exec(uri);
-    if ( matches !== null ) { return matches[1]; }
-    matches = reAuthorityFromURI.exec(uri);
-    if ( matches === null ) { return ''; }
-    var authority = matches[1].slice(2);
-    // Assume very simple authority (most common case for µBlock)
-    if ( reHostFromNakedAuthority.test(authority) ) {
-        return authority.toLowerCase();
-    }
-    matches = reHostFromAuthority.exec(authority);
-    if ( matches === null ) {
-        matches = reIPv6FromAuthority.exec(authority);
-        if ( matches === null ) { return ''; }
-    }
-    var hostname = matches[1];
-    while ( hostname.endsWith('.') ) {
-        hostname = hostname.slice(0, -1);
-    }
-    if ( reMustNormalizeHostname.test(hostname) ) {
-        hostname = punycode.toASCII(hostname.toLowerCase());
-    }
-    return hostname;
-};
-
-/******************************************************************************/
-
-URI.domainFromHostname = function(hostname) {
-    // Try to skip looking up the PSL database
-    var entry = domainCache.get(hostname);
-    if ( entry !== undefined ) {
-        entry.tstamp = Date.now();
-        return entry.domain;
-    }
-    // Meh.. will have to search it
-    if ( reIPAddressNaive.test(hostname) === false ) {
-        return domainCacheAdd(hostname, psl.getDomain(hostname));
-    }
-    return domainCacheAdd(hostname, hostname);
-};
-
-// It is expected that there is higher-scoped `publicSuffixList` lingering
-// somewhere. Cache it. See <https://github.com/gorhill/publicsuffixlist.js>.
-var psl = publicSuffixList;
-
-/******************************************************************************/
-
- // Trying to alleviate the worries of looking up too often the domain name from
-// a hostname. With a cache, uBlock benefits given that it deals with a
-// specific set of hostnames within a narrow time span -- in other words, I
-// believe probability of cache hit are high in uBlock.
-
-var domainCache = new Map();
-var domainCacheCountLowWaterMark = 75;
-var domainCacheCountHighWaterMark = 100;
-var domainCacheEntryJunkyard = [];
-var domainCacheEntryJunkyardMax = domainCacheCountHighWaterMark - domainCacheCountLowWaterMark;
-
-var DomainCacheEntry = function(domain) {
-    this.init(domain);
-};
-
-DomainCacheEntry.prototype.init = function(domain) {
-    this.domain = domain;
-    this.tstamp = Date.now();
-    return this;
-};
-
-DomainCacheEntry.prototype.dispose = function() {
-    this.domain = '';
-    if ( domainCacheEntryJunkyard.length < domainCacheEntryJunkyardMax ) {
-        domainCacheEntryJunkyard.push(this);
-    }
-};
-
-var domainCacheEntryFactory = function(domain) {
-    var entry = domainCacheEntryJunkyard.pop();
-    if ( entry ) {
-        return entry.init(domain);
-    }
-    return new DomainCacheEntry(domain);
-};
-
-var domainCacheAdd = function(hostname, domain) {
-    var entry = domainCache.get(hostname);
-    if ( entry !== undefined ) {
-        entry.tstamp = Date.now();
-    } else {
-        domainCache.set(hostname, domainCacheEntryFactory(domain));
-        if ( domainCache.size === domainCacheCountHighWaterMark ) {
-            domainCachePrune();
-        }
-    }
-    return domain;
-};
-
-var domainCacheEntrySort = function(a, b) {
-    return domainCache.get(b).tstamp - domainCache.get(a).tstamp;
-};
-
-var domainCachePrune = function() {
-    var hostnames = Array.from(domainCache.keys())
-                         .sort(domainCacheEntrySort)
-                         .slice(domainCacheCountLowWaterMark);
-    var i = hostnames.length;
-    var hostname;
-    while ( i-- ) {
-        hostname = hostnames[i];
-        domainCache.get(hostname).dispose();
-        domainCache.delete(hostname);
-    }
-};
-
-window.addEventListener('publicSuffixList', function() {
-    domainCache.clear();
-});
-
-/******************************************************************************/
-
-URI.domainFromURI = function(uri) {
-    if ( !uri ) {
-        return '';
-    }
-    return this.domainFromHostname(this.hostnameFromURI(uri));
-};
+URI.hostnameFromURI = vAPI.hostnameFromURI;
+URI.domainFromHostname = vAPI.domainFromHostname;
+URI.domainFromURI = vAPI.domainFromURI;
 
 /******************************************************************************/
 

src/js/user-rules.js

@@ -25,21 +25,22 @@
 
 /******************************************************************************/
 
-(function() {
+{
+// >>>>> start of local scope
 
 /******************************************************************************/
 
 // Move to dashboard-common.js if needed
 
-(function() {
+{
     let timer;
-    let resize = function() {
+    const resize = ( ) => {
         timer = undefined;
-        let child = document.querySelector('.vfill-available');
+        const child = document.querySelector('.vfill-available');
         if ( child === null ) { return; }
-        let prect = document.documentElement.getBoundingClientRect();
-        let crect = child.getBoundingClientRect();
-        let cssHeight = Math.max(prect.bottom - crect.top, 80) + 'px';
+        const prect = document.documentElement.getBoundingClientRect();
+        const crect = child.getBoundingClientRect();
+        const cssHeight = Math.max(prect.bottom - crect.top, 80) + 'px';
         if ( child.style.height !== cssHeight ) {
             child.style.height = cssHeight;
             if ( typeof mergeView !== 'undefined' ) {
@@ -48,7 +49,7 @@
             }
         }
     };
-    let resizeAsync = function(delay) {
+    const resizeAsync = function(delay) {
         if ( timer === undefined ) {
             timer = vAPI.setTimeout(
                 resize,
@@ -57,17 +58,17 @@
         }
     };
     window.addEventListener('resize', resizeAsync);
-    var observer = new MutationObserver(resizeAsync);
+    const observer = new MutationObserver(resizeAsync);
     observer.observe(document.querySelector('.body'), {
         childList: true,
         subtree: true
     });
     resizeAsync(1);
-})();
+}
 
 /******************************************************************************/
 
-var mergeView = new CodeMirror.MergeView(
+const mergeView = new CodeMirror.MergeView(
     document.querySelector('.codeMirrorMergeContainer'),
     {
         allowEditingOriginals: true,
@@ -84,15 +85,15 @@ mergeView.editor().setOption('styleActiveLine', true);
 mergeView.editor().setOption('lineNumbers', false);
 mergeView.leftOriginal().setOption('readOnly', 'nocursor');
 
-var unfilteredRules = {
+const unfilteredRules = {
     orig: { doc: mergeView.leftOriginal(), rules: [] },
     edit: { doc: mergeView.editor(), rules: [] }
 };
 
-var cleanEditToken = 0;
-var cleanEditText = '';
+let cleanEditToken = 0;
+let cleanEditText = '';
 
-var differ;
+let differ;
 
 /******************************************************************************/
 
@@ -100,13 +101,13 @@ var differ;
 // https://github.com/codemirror/CodeMirror/blob/3e1bb5fff682f8f6cbfaef0e56c61d62403d4798/addon/search/search.js#L22
 // ... and modified as needed.
 
-var updateOverlay = (function() {
-    var reFilter;
-    var mode = {
+const updateOverlay = (function() {
+    let reFilter;
+    const mode = {
         token: function(stream) {
             if ( reFilter !== undefined ) {
                 reFilter.lastIndex = stream.pos;
-                var match = reFilter.exec(stream.string);
+                const match = reFilter.exec(stream.string);
                 if ( match !== null ) {
                     if ( match.index === stream.pos ) {
                         stream.pos += match[0].length || 1;
@@ -133,36 +134,36 @@ var updateOverlay = (function() {
 // - Scroll position preserved
 // - Minimum amount of text updated
 
-var rulesToDoc = function(clearHistory) {
-    for ( var key in unfilteredRules ) {
+const rulesToDoc = function(clearHistory) {
+    for ( const key in unfilteredRules ) {
         if ( unfilteredRules.hasOwnProperty(key) === false ) { continue; }
-        var doc = unfilteredRules[key].doc;
-        var rules = filterRules(key);
+        const doc = unfilteredRules[key].doc;
+        const rules = filterRules(key);
         if ( doc.lineCount() === 1 && doc.getValue() === '' || rules.length === 0 ) {
             doc.setValue(rules.length !== 0 ? rules.join('\n') : '');
             continue;
         }
         if ( differ === undefined ) { differ = new diff_match_patch(); }
-        var beforeText = doc.getValue();
-        var afterText = rules.join('\n');
-        var diffs = differ.diff_main(beforeText, afterText);
+        const beforeText = doc.getValue();
+        const afterText = rules.join('\n');
+        const diffs = differ.diff_main(beforeText, afterText);
         doc.startOperation();
-        var i = diffs.length,
-            iedit = beforeText.length;
+        let i = diffs.length;
+        let iedit = beforeText.length;
         while ( i-- ) {
-            var diff = diffs[i];
+            const diff = diffs[i];
             if ( diff[0] === 0 ) {
                 iedit -= diff[1].length;
                 continue;
             }
-            var end = doc.posFromIndex(iedit);
+            const end = doc.posFromIndex(iedit);
             if ( diff[0] === 1 ) {
                 doc.replaceRange(diff[1], end, end);
                 continue;
             }
             /* diff[0] === -1 */
             iedit -= diff[1].length;
-            var beg = doc.posFromIndex(iedit);
+            const beg = doc.posFromIndex(iedit);
             doc.replaceRange('', beg, end);
         }
         doc.endOperation();
@@ -176,12 +177,12 @@ var rulesToDoc = function(clearHistory) {
 
 /******************************************************************************/
 
-var filterRules = function(key) {
-    var rules = unfilteredRules[key].rules;
-    var filter = uDom('#ruleFilter input').val();
+const filterRules = function(key) {
+    const filter = uDom('#ruleFilter input').val();
+    let rules = unfilteredRules[key].rules;
     if ( filter !== '' ) {
         rules = rules.slice();
-        var i = rules.length;
+        let i = rules.length;
         while ( i-- ) {
             if ( rules[i].indexOf(filter) === -1 ) {
                 rules.splice(i, 1);
@@ -193,25 +194,20 @@ var filterRules = function(key) {
 
 /******************************************************************************/
 
-var renderRules = (function() {
-    var firstVisit = true;
-
-    return function(details) {
+const renderRules = function(details, firstVisit = false) {
     unfilteredRules.orig.rules = details.permanentRules.sort(directiveSort);
     unfilteredRules.edit.rules = details.temporaryRules.sort(directiveSort);
     rulesToDoc(firstVisit);
     if ( firstVisit ) {
-            firstVisit = false;
         mergeView.editor().execCommand('goNextDiff');
     }
     onTextChanged(true);
 };
-})();
 
 // Switches before, rules after
-var directiveSort = function(a, b) {
-    var aIsSwitch = a.indexOf(': ') !== -1;
-    var bIsSwitch = b.indexOf(': ') !== -1;
+const directiveSort = function(a, b) {
+    const aIsSwitch = a.indexOf(': ') !== -1;
+    const bIsSwitch = b.indexOf(': ') !== -1;
     if ( aIsSwitch === bIsSwitch ) {
         return a.localeCompare(b);
     }
@@ -220,17 +216,15 @@ var directiveSort = function(a, b) {
 
 /******************************************************************************/
 
-var applyDiff = function(permanent, toAdd, toRemove) {
-    vAPI.messaging.send(
-        'user-rules.js',
-        {
+const applyDiff = function(permanent, toAdd, toRemove) {
+    vAPI.messaging.send('dashboard', {
         what: 'modifyRuleset',
-            permanent: permanent,
-            toAdd: toAdd,
-            toRemove: toRemove
-        },
-        renderRules
-    );
+        permanent,
+        toAdd,
+        toRemove,
+    }).then(response => {
+        renderRules(response);
+    });
 };
 
 /******************************************************************************/
@@ -245,20 +239,20 @@ mergeView.options.revertChunk = function(
 ) {
     // https://github.com/gorhill/uBlock/issues/3611
     if ( document.body.getAttribute('dir') === 'rtl' ) {
-        var tmp;
+        let tmp;
         tmp = from; from = to; to = tmp;
         tmp = fromStart; fromStart = toStart; toStart = tmp;
         tmp = fromEnd; fromEnd = toEnd; toEnd = tmp;
     }
     if ( typeof fromStart.ch !== 'number' ) { fromStart.ch = 0; }
     if ( fromEnd.ch !== 0 ) { fromEnd.line += 1; }
-    var toAdd = from.getRange(
+    const toAdd = from.getRange(
         { line: fromStart.line, ch: 0 },
         { line: fromEnd.line, ch: 0 }
     );
     if ( typeof toStart.ch !== 'number' ) { toStart.ch = 0; }
     if ( toEnd.ch !== 0 ) { toEnd.line += 1; }
-    var toRemove = to.getRange(
+    const toRemove = to.getRange(
         { line: toStart.line, ch: 0 },
         { line: toEnd.line, ch: 0 }
     );
@@ -270,8 +264,8 @@ mergeView.options.revertChunk = function(
 // https://github.com/chrisaljoudi/uBlock/issues/757
 // Support RequestPolicy rule syntax
 
-var fromRequestPolicy = function(content) {
-    var matches = /\[origins-to-destinations\]([^\[]+)/.exec(content);
+const fromRequestPolicy = function(content) {
+    const matches = /\[origins-to-destinations\]([^\[]+)/.exec(content);
     if ( matches === null || matches.length !== 2 ) { return; }
     return matches[1].trim()
                      .replace(/\|/g, ' ')
@@ -282,8 +276,8 @@ var fromRequestPolicy = function(content) {
 
 // https://github.com/gorhill/uMatrix/issues/270
 
-var fromNoScript = function(content) {
-    var noscript = null;
+const fromNoScript = function(content) {
+    let noscript = null;
     try {
         noscript = JSON.parse(content);
     } catch (e) {
@@ -298,17 +292,16 @@ var fromNoScript = function(content) {
     ) {
         return;
     }
-    var out = new Set();
-    var reBad = /[a-z]+:\w*$/;
-    var reURL = /[a-z]+:\/\/([0-9a-z.-]+)/;
-    var directives = noscript.whitelist.split(/\s+/);
-    var i = directives.length;
-    var directive, matches;
+    const out = new Set();
+    const reBad = /[a-z]+:\w*$/;
+    const reURL = /[a-z]+:\/\/([0-9a-z.-]+)/;
+    const directives = noscript.whitelist.split(/\s+/);
+    let i = directives.length;
     while ( i-- ) {
-        directive = directives[i].trim();
+        let directive = directives[i].trim();
         if ( directive === '' ) { continue; }
         if ( reBad.test(directive) ) { continue; }
-        matches = reURL.exec(directive);
+        const matches = reURL.exec(directive);
         if ( matches !== null ) {
             directive = matches[1];
         }
@@ -321,12 +314,12 @@ var fromNoScript = function(content) {
 
 /******************************************************************************/
 
-var handleImportFilePicker = function() {
-    var fileReaderOnLoadHandler = function() {
+const handleImportFilePicker = function() {
+    const fileReaderOnLoadHandler = function() {
         if ( typeof this.result !== 'string' || this.result === '' ) {
             return;
         }
-        var result = fromRequestPolicy(this.result);
+        let result = fromRequestPolicy(this.result);
         if ( result === undefined ) {
             result = fromNoScript(this.result);
             if ( result === undefined ) {
@@ -336,20 +329,20 @@ var handleImportFilePicker = function() {
         if ( this.result === '' ) { return; }
         applyDiff(false, result, '');
     };
-    var file = this.files[0];
+    const file = this.files[0];
     if ( file === undefined || file.name === '' ) { return; }
     if ( file.type.indexOf('text') !== 0 && file.type !== 'application/json') {
         return;
     }
-    var fr = new FileReader();
+    const fr = new FileReader();
     fr.onload = fileReaderOnLoadHandler;
     fr.readAsText(file);
 };
 
 /******************************************************************************/
 
-var startImportFilePicker = function() {
-    var input = document.getElementById('importFilePicker');
+const startImportFilePicker = function() {
+    const input = document.getElementById('importFilePicker');
     // Reset to empty string, this will ensure an change event is properly
     // triggered if the user pick a file, even if it is the same as the last
     // one picked.
@@ -359,26 +352,26 @@ var startImportFilePicker = function() {
 
 /******************************************************************************/
 
-function exportUserRulesToFile() {
+const exportUserRulesToFile = function() {
     vAPI.download({
         url: 'data:text/plain,' + encodeURIComponent(
             mergeView.leftOriginal().getValue().trim() + '\n'
         ),
         filename: uDom('[data-i18n="userRulesDefaultFileName"]').text()
     });
-}
+};
 
 /******************************************************************************/
 
-var onFilterChanged = (function() {
-    var timer,
-        overlay = null,
-        last = '';
+const onFilterChanged = (function() {
+    let timer;
+    let overlay = null;
+    let last = '';
 
-    var process = function() {
+    const process = function() {
         timer = undefined;
         if ( mergeView.editor().isClean(cleanEditToken) === false ) { return; }
-        var filter = uDom('#ruleFilter input').val();
+        const filter = uDom('#ruleFilter input').val();
         if ( filter === last ) { return; }
         last = filter;
         if ( overlay !== null ) {
@@ -402,13 +395,13 @@ var onFilterChanged = (function() {
 
 /******************************************************************************/
 
-var onTextChanged = (function() {
-    var timer;
+const onTextChanged = (function() {
+    let timer;
 
-    var process = function(now) {
+    const process = function(now) {
         timer = undefined;
-        var isClean = mergeView.editor().isClean(cleanEditToken);
-        var diff = document.getElementById('diff');
+        const diff = document.getElementById('diff');
+        let isClean = mergeView.editor().isClean(cleanEditToken);
         if (
             now &&
             isClean === false &&
@@ -419,7 +412,7 @@ var onTextChanged = (function() {
         }
         diff.classList.toggle('editing', isClean === false);
         diff.classList.toggle('dirty', mergeView.leftChunks().length !== 0);
-        var input = document.querySelector('#ruleFilter input');
+        const input = document.querySelector('#ruleFilter input');
         if ( isClean ) {
             input.removeAttribute('disabled');
             CodeMirror.commands.save = undefined;
@@ -437,16 +430,16 @@ var onTextChanged = (function() {
 
 /******************************************************************************/
 
-var revertAllHandler = function() {
-    var toAdd = [], toRemove = [];
-    var left = mergeView.leftOriginal(),
-        edit = mergeView.editor();
-    for ( var chunk of mergeView.leftChunks() ) {
-        var addedLines = left.getRange(
+const revertAllHandler = function() {
+    const toAdd = [], toRemove = [];
+    const left = mergeView.leftOriginal();
+    const edit = mergeView.editor();
+    for ( const chunk of mergeView.leftChunks() ) {
+        const addedLines = left.getRange(
             { line: chunk.origFrom, ch: 0 },
             { line: chunk.origTo, ch: 0 }
         );
-        var removedLines = edit.getRange(
+        const removedLines = edit.getRange(
             { line: chunk.editFrom, ch: 0 },
             { line: chunk.editTo, ch: 0 }
         );
@@ -458,16 +451,16 @@ var revertAllHandler = function() {
 
 /******************************************************************************/
 
-var commitAllHandler = function() {
-    var toAdd = [], toRemove = [];
-    var left = mergeView.leftOriginal(),
-        edit = mergeView.editor();
-    for ( var chunk of mergeView.leftChunks() ) {
-        var addedLines = edit.getRange(
+const commitAllHandler = function() {
+    const toAdd = [], toRemove = [];
+    const left = mergeView.leftOriginal();
+    const edit = mergeView.editor();
+    for ( const chunk of mergeView.leftChunks() ) {
+        const addedLines = edit.getRange(
             { line: chunk.editFrom, ch: 0 },
             { line: chunk.editTo, ch: 0 }
         );
-        var removedLines = left.getRange(
+        const removedLines = left.getRange(
             { line: chunk.origFrom, ch: 0 },
             { line: chunk.origTo, ch: 0 }
         );
@@ -479,17 +472,17 @@ var commitAllHandler = function() {
 
 /******************************************************************************/
 
-var editSaveHandler = function() {
-    var editor = mergeView.editor();
-    var editText = editor.getValue().trim();
+const editSaveHandler = function() {
+    const editor = mergeView.editor();
+    const editText = editor.getValue().trim();
     if ( editText === cleanEditText ) {
         onTextChanged(true);
         return;
     }
     if ( differ === undefined ) { differ = new diff_match_patch(); }
-    var toAdd = [], toRemove = [];
-    var diffs = differ.diff_main(cleanEditText, editText);
-    for ( var diff of diffs ) {
+    const toAdd = [], toRemove = [];
+    const diffs = differ.diff_main(cleanEditText, editText);
+    for ( const diff of diffs ) {
         if ( diff[0] === 1 ) {
             toAdd.push(diff[1]);
         } else if ( diff[0] === -1 ) {
@@ -528,9 +521,14 @@ uDom('#ruleFilter input').on('input', onFilterChanged);
 // https://groups.google.com/forum/#!topic/codemirror/UQkTrt078Vs
 mergeView.editor().on('updateDiff', function() { onTextChanged(); });
 
-vAPI.messaging.send('user-rules.js', { what: 'getRuleset' }, renderRules);
+vAPI.messaging.send('dashboard', {
+    what: 'getRuleset',
+}).then(response => {
+    renderRules(response, true);
+});
 
 /******************************************************************************/
 
-})();
+// <<<<< end of local scope
+}
 

src/js/utils.js

@@ -28,13 +28,26 @@
         if ( details.shiftKey ) {
             this.changeUserSettings(
                 'alwaysDetachLogger',
-                !this.userSettings.alwaysDetachLogger
+                this.userSettings.alwaysDetachLogger === false
             );
         }
-        details.popup = this.userSettings.alwaysDetachLogger;
+        if ( this.userSettings.alwaysDetachLogger ) {
+            details.popup = this.rawSettings.loggerPopupType;
+            const url = new URL(vAPI.getURL(details.url));
+            url.searchParams.set('popup', '1');
+            details.url = url.href;
+            let popupLoggerBox;
+            try {
+                popupLoggerBox = JSON.parse(
+                    vAPI.localStorage.getItem('popupLoggerBox')
+                );
+            } catch(ex) {
+            }
+            if ( popupLoggerBox !== undefined ) {
+                details.box = popupLoggerBox;
+            }
+        }
     }
-    details.index = -1;
-    details.select = true;
     vAPI.tabs.open(details);
 };
 
@@ -107,3 +120,110 @@
 };
 
 /******************************************************************************/
+
+// Custom base64 encoder/decoder
+//
+// TODO:
+//   Could expand the LZ4 codec API to be able to return UTF8-safe string
+//   representation of a compressed buffer, and thus the code below could be
+//   moved LZ4 codec-side.
+// https://github.com/uBlockOrigin/uBlock-issues/issues/461
+//   Provide a fallback encoding for Chromium 59 and less by issuing a plain
+//   JSON string. The fallback can be removed once min supported version is
+//   above 59.
+
+µMatrix.base64 = new (class {
+    constructor() {
+        this.valToDigit = new Uint8Array(64);
+        this.digitToVal = new Uint8Array(128);
+        const chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz@%";
+        for ( let i = 0, n = chars.length; i < n; i++ ) {
+            const c = chars.charCodeAt(i);
+            this.valToDigit[i] = c;
+            this.digitToVal[c] = i;
+        }
+        this.magic = 'Base64_1';
+    }
+
+    encode(arrbuf, arrlen) {
+        const inputLength = (arrlen + 3) >>> 2;
+        const inbuf = new Uint32Array(arrbuf, 0, inputLength);
+        const outputLength = this.magic.length + 7 + inputLength * 7;
+        const outbuf = new Uint8Array(outputLength);
+        let j = 0;
+        for ( let i = 0; i < this.magic.length; i++ ) {
+            outbuf[j++] = this.magic.charCodeAt(i);
+        }
+        let v = inputLength;
+        do {
+            outbuf[j++] = this.valToDigit[v & 0b111111];
+            v >>>= 6;
+        } while ( v !== 0 );
+        outbuf[j++] = 0x20 /* ' ' */;
+        for ( let i = 0; i < inputLength; i++ ) {
+            v = inbuf[i];
+            do {
+                outbuf[j++] = this.valToDigit[v & 0b111111];
+                v >>>= 6;
+            } while ( v !== 0 );
+            outbuf[j++] = 0x20 /* ' ' */;
+        }
+        if ( typeof TextDecoder === 'undefined' ) {
+            return JSON.stringify(
+                Array.from(new Uint32Array(outbuf.buffer, 0, j >>> 2))
+            );
+        }
+        const textDecoder = new TextDecoder();
+        return textDecoder.decode(new Uint8Array(outbuf.buffer, 0, j));
+    }
+
+    decode(instr, arrbuf) {
+        if (  instr.charCodeAt(0) === 0x5B /* '[' */ ) {
+            const inbuf = JSON.parse(instr);
+            if ( arrbuf instanceof ArrayBuffer === false ) {
+                return new Uint32Array(inbuf);
+            }
+            const outbuf = new Uint32Array(arrbuf);
+            outbuf.set(inbuf);
+            return outbuf;
+        }
+        if ( instr.startsWith(this.magic) === false ) {
+            throw new Error('Invalid µBlock.base64 encoding');
+        }
+        const inputLength = instr.length;
+        const outbuf = arrbuf instanceof ArrayBuffer === false
+            ? new Uint32Array(this.decodeSize(instr) >> 2)
+            : new Uint32Array(arrbuf);
+        let i = instr.indexOf(' ', this.magic.length) + 1;
+        if ( i === -1 ) {
+            throw new Error('Invalid µBlock.base64 encoding');
+        }
+        let j = 0;
+        for (;;) {
+            if ( i === inputLength ) { break; }
+            let v = 0, l = 0;
+            for (;;) {
+                const c = instr.charCodeAt(i++);
+                if ( c === 0x20 /* ' ' */ ) { break; }
+                v += this.digitToVal[c] << l;
+                l += 6;
+            }
+            outbuf[j++] = v;
+        }
+        return outbuf;
+    }
+
+    decodeSize(instr) {
+        if ( instr.startsWith(this.magic) === false ) { return 0; }
+        let v = 0, l = 0, i = this.magic.length;
+        for (;;) {
+            const c = instr.charCodeAt(i++);
+            if ( c === 0x20 /* ' ' */ ) { break; }
+            v += this.digitToVal[c] << l;
+            l += 6;
+        }
+        return v << 2;
+    }
+})();
+
+/******************************************************************************/

src/js/wasm/README.md

@@ -0,0 +1,24 @@
+### For code reviewers
+
+All `wasm` files in that directory where created by compiling the
+corresponding `wat` file using the command (using `hntrie.wat`/`hntrie.wasm`
+as example):
+
+    wat2wasm hntrie.wat -o hntrie.wasm
+
+Assuming:
+
+- The command is executed from within the present directory.
+
+### `wat2wasm` tool
+
+The `wat2wasm` tool can be downloaded from an official WebAssembly project:
+<https://github.com/WebAssembly/wabt/releases>.
+
+### `wat2wasm` tool online
+
+You can also use the following online `wat2wasm` tool:
+<https://webassembly.github.io/wabt/demo/wat2wasm/>.
+
+Just paste the whole content of the `wat` file to compile into the WAT pane.
+Click "Download" button to retrieve the resulting `wasm` file.

src/js/wasm/hntrie.wat

@@ -0,0 +1,710 @@
+;;
+;; uBlock Origin - a browser extension to block requests.
+;; Copyright (C) 2018-present Raymond Hill
+;;
+;; This program is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see {http://www.gnu.org/licenses/}.
+;;
+;; Home: https://github.com/gorhill/uBlock
+;; File: hntrie.wat
+;; Description: WebAssembly code used by src/js/hntrie.js
+;; How to compile: See README.md in this directory.
+
+(module
+;;
+;; module start
+;;
+
+(func $growBuf (import "imports" "growBuf"))
+(memory (import "imports" "memory") 1)
+
+;; Trie container
+;;
+;; Memory layout, byte offset:
+;;    0-254: needle being processed
+;;      255: length of needle
+;;  256-259: offset to start of trie data section (=> trie0)
+;;  260-263: offset to end of trie data section (=> trie1)
+;;  264-267: offset to start of character data section  (=> char0)
+;;  268-271: offset to end of character data section (=> char1)
+;;      272: start of trie data section
+;;
+
+;;
+;; Public functions
+;;
+
+;;
+;; unsigned int matches(icell)
+;;
+;; Test whether the currently set needle matches the trie at specified trie
+;; offset.
+;;
+(func (export "matches")
+    (param $iroot i32)          ;; offset to root cell of the trie
+    (result i32)                ;; result = match index, -1 = miss
+    (local $icell i32)          ;; offset to the current cell
+    (local $char0 i32)          ;; offset to first character data
+    (local $ineedle i32)        ;; current needle offset
+    (local $c i32)
+    (local $v i32)
+    (local $n i32)
+    (local $i0 i32)
+    (local $i1 i32)
+    ;;
+    i32.const 264               ;; start of char section is stored at addr 264
+    i32.load
+    set_local $char0
+    ;; let ineedle = this.buf[255];
+    i32.const 255               ;; addr of needle is stored at addr 255
+    i32.load8_u
+    set_local $ineedle
+    ;; let icell = this.buf32[iroot+0];
+    get_local $iroot
+    i32.const 2
+    i32.shl
+    i32.load
+    i32.const 2
+    i32.shl
+    tee_local $icell
+    ;; if ( icell === 0 ) { return -1; }
+    i32.eqz
+    if
+        i32.const -1
+        return
+    end
+    ;; for (;;) {
+    block $noSegment loop $nextSegment
+        ;; if ( ineedle === 0 ) { return -1; }
+        get_local $ineedle
+        i32.eqz
+        if
+            i32.const -1
+            return
+        end
+        ;; ineedle -= 1;
+        get_local $ineedle
+        i32.const -1
+        i32.add
+        tee_local $ineedle
+        ;; let c = this.buf[ineedle];
+        i32.load8_u
+        set_local $c
+        ;; for (;;) {
+        block $foundSegment loop $findSegment
+            ;; v = this.buf32[icell+2];
+            get_local $icell
+            i32.load offset=8
+            tee_local $v
+            ;; i0 = this.char0 + (v & 0x00FFFFFF);
+            i32.const 0x00FFFFFF
+            i32.and
+            get_local $char0
+            i32.add
+            tee_local $i0
+            ;; if ( this.buf[i0] === c ) { break; }
+            i32.load8_u
+            get_local $c
+            i32.eq
+            br_if $foundSegment
+            ;; icell = this.buf32[icell+0];
+            get_local $icell
+            i32.load
+            i32.const 2
+            i32.shl
+            tee_local $icell
+            i32.eqz
+            if
+                i32.const -1
+                return
+            end
+            br 0
+        end end
+        ;; let n = v >>> 24;
+        get_local $v
+        i32.const 24
+        i32.shr_u
+        tee_local $n
+        ;; if ( n > 1 ) {
+        i32.const 1
+        i32.gt_u
+        if
+            ;; n -= 1;
+            get_local $n
+            i32.const -1
+            i32.add
+            tee_local $n
+            ;; if ( n > ineedle ) { return -1; }
+            get_local $ineedle
+            i32.gt_u
+            if
+                i32.const -1
+                return
+            end
+            get_local $i0
+            i32.const 1
+            i32.add
+            tee_local $i0
+            ;; const i1 = i0 + n;
+            get_local $n
+            i32.add
+            set_local $i1
+            ;; do {
+            loop
+                ;; ineedle -= 1;
+                get_local $ineedle
+                i32.const -1
+                i32.add
+                tee_local $ineedle
+                ;; if ( this.buf[i0] !== this.buf[ineedle] ) { return -1; }
+                i32.load8_u
+                get_local $i0
+                i32.load8_u
+                i32.ne
+                if
+                    i32.const -1
+                    return
+                end
+                ;; i0 += 1;
+                get_local $i0
+                i32.const 1
+                i32.add
+                tee_local $i0
+                ;; } while ( i0 < i1 );
+                get_local $i1
+                i32.lt_u
+                br_if 0
+            end
+        end
+        ;; icell = this.buf32[icell+1];
+        get_local $icell
+        i32.load offset=4
+        i32.const 2
+        i32.shl
+        tee_local $icell
+        ;; if ( icell === 0 ) { break; }
+        i32.eqz
+        br_if $noSegment
+        ;; if ( this.buf32[icell+2] === 0 ) {
+        get_local $icell
+        i32.load
+        i32.eqz
+        if
+            ;; if ( ineedle === 0 || this.buf[ineedle-1] === 0x2E ) {
+            ;;     return ineedle;
+            ;; }
+            get_local $ineedle
+            i32.eqz
+            if
+                i32.const 0
+                return
+            end
+            get_local $ineedle
+            i32.const -1
+            i32.add
+            i32.load8_u
+            i32.const 0x2E
+            i32.eq
+            if
+                get_local $ineedle
+                return
+            end
+            ;; icell = this.buf32[icell+1];
+            get_local $icell
+            i32.load offset=4
+            i32.const 2
+            i32.shl
+            set_local $icell
+        end
+        br 0
+    end end
+    ;; return ineedle === 0 || this.buf[ineedle-1] === 0x2E ? ineedle : -1;
+    get_local $ineedle
+    i32.eqz
+    if
+        i32.const 0
+        return
+    end
+    get_local $ineedle
+    i32.const -1
+    i32.add
+    i32.load8_u
+    i32.const 0x2E
+    i32.eq
+    if
+        get_local $ineedle
+        return
+    end
+    i32.const -1
+)
+
+;;
+;; unsigned int add(icell)
+;;
+;; Add a new hostname to a trie which root cell is passed as argument.
+;;
+(func (export "add")
+    (param $iroot i32)          ;; index of root cell of the trie
+    (result i32)                ;; result: 0 not added, 1 = added
+    (local $icell i32)          ;; index of current cell in the trie
+    (local $lhnchar i32)        ;; number of characters left to process in hostname
+    (local $char0 i32)          ;; offset to start of character data section
+    (local $vseg i32)           ;; integer value describing a segment
+    (local $isegchar0 i32)      ;; offset to start of current segment's character data
+    (local $isegchar i32)
+    (local $lsegchar i32)       ;; number of character in current segment
+    (local $inext i32)          ;; index of next cell to process
+    ;;
+    ;; let lhnchar = this.buf[255];
+    i32.const 255
+    i32.load8_u
+    tee_local $lhnchar
+    ;; if ( lhnchar === 0 ) { return 0; }
+    i32.eqz
+    if
+        i32.const 0
+        return
+    end
+    ;; if (
+    ;;     (this.buf32[HNBIGTRIE_CHAR0_SLOT] - this.buf32[HNBIGTRIE_TRIE1_SLOT]) < 24 ||
+    ;;     (this.buf.length - this.buf32[HNBIGTRIE_CHAR1_SLOT]) < 256
+    ;; ) {
+    ;;     this.growBuf();
+    ;; }
+    i32.const 264
+    i32.load
+    i32.const 260
+    i32.load
+    i32.sub
+    i32.const 24
+    i32.lt_u
+    if
+        call $growBuf
+    else
+        memory.size
+        i32.const 16
+        i32.shl
+        i32.const 268
+        i32.load
+        i32.sub
+        i32.const 256
+        i32.lt_u
+        if
+            call $growBuf
+        end
+    end
+    ;; let icell = this.buf32[iroot+0];
+    get_local $iroot
+    i32.const 2
+    i32.shl
+    tee_local $iroot
+    i32.load
+    i32.const 2
+    i32.shl
+    tee_local $icell
+    ;; if ( this.buf32[icell+2] === 0 ) {
+    i32.eqz
+    if
+        ;; this.buf32[iroot+0] = this.addCell(0, 0, this.addSegment(lhnchar));
+        ;; return 1;
+        get_local $iroot
+        i32.const 0
+        i32.const 0
+        get_local $lhnchar
+        call $addSegment
+        call $addCell
+        i32.store
+        i32.const 1
+        return
+    end
+    ;; const char0 = this.buf32[HNBIGTRIE_CHAR0_SLOT];
+    i32.const 264
+    i32.load
+    set_local $char0
+    ;; for (;;) {
+    loop $nextSegment
+        ;; const v = this.buf32[icell+2];
+        get_local $icell
+        i32.load offset=8
+        tee_local $vseg
+        ;; if ( vseg === 0 ) {
+        i32.eqz
+        if
+            ;; if ( this.buf[lhnchar-1] === 0x2E /* '.' */ ) { return -1; }
+            get_local $lhnchar
+            i32.const -1
+            i32.add
+            i32.load8_u
+            i32.const 0x2E
+            i32.eq
+            if
+                i32.const -1
+                return
+            end
+            ;; icell = this.buf32[icell+1];
+            ;; continue;
+            get_local $icell
+            i32.load offset=4
+            i32.const 2
+            i32.shl
+            set_local $icell
+            br $nextSegment
+        end
+        ;; let isegchar0 = char0 + (vseg & 0x00FFFFFF);
+        get_local $char0
+        get_local $vseg
+        i32.const 0x00FFFFFF
+        i32.and
+        i32.add
+        tee_local $isegchar0
+        ;; if ( this.buf[isegchar0] !== this.buf[lhnchar-1] ) {
+        i32.load8_u
+        get_local $lhnchar
+        i32.const -1
+        i32.add
+        i32.load8_u
+        i32.ne
+        if
+            ;; inext = this.buf32[icell+0];
+            get_local $icell
+            i32.load
+            i32.const 2
+            i32.shl
+            tee_local $inext
+            ;; if ( inext === 0 ) {
+            i32.eqz
+            if
+                ;; this.buf32[icell+0] = this.addCell(0, 0, this.addSegment(lhnchar));
+                get_local $icell
+                i32.const 0
+                i32.const 0
+                get_local $lhnchar
+                call $addSegment
+                call $addCell
+                i32.store
+                ;; return 1;
+                i32.const 1
+                return
+            end
+            ;; icell = inext;
+            get_local $inext
+            set_local $icell
+            br $nextSegment
+        end
+        ;; let isegchar = 1;
+        i32.const 1
+        set_local $isegchar
+        ;; lhnchar -= 1;
+        get_local $lhnchar
+        i32.const -1
+        i32.add
+        set_local $lhnchar
+        ;; const lsegchar = vseg >>> 24;
+        get_local $vseg
+        i32.const 24
+        i32.shr_u
+        tee_local $lsegchar
+        ;; if ( lsegchar !== 1 ) {
+        i32.const 1
+        i32.ne
+        if
+            ;; for (;;) {
+            block $mismatch loop
+                ;; if ( isegchar === lsegchar ) { break; }
+                get_local $isegchar
+                get_local $lsegchar
+                i32.eq
+                br_if $mismatch
+                get_local $lhnchar
+                i32.eqz
+                br_if $mismatch
+                ;; if ( this.buf[isegchar0+isegchar] !== this.buf[lhnchar-1] ) { break; }
+                get_local $isegchar0
+                get_local $isegchar
+                i32.add
+                i32.load8_u
+                get_local $lhnchar
+                i32.const -1
+                i32.add
+                i32.load8_u
+                i32.ne
+                br_if $mismatch
+                ;; isegchar += 1;
+                get_local $isegchar
+                i32.const 1
+                i32.add
+                set_local $isegchar
+                ;; lhnchar -= 1;
+                get_local $lhnchar
+                i32.const -1
+                i32.add
+                set_local $lhnchar
+                br 0
+            end end
+        end
+        ;; if ( isegchar === lsegchar ) {
+        get_local $isegchar
+        get_local $lsegchar
+        i32.eq
+        if
+            ;; inext = this.buf32[icell+1];
+            get_local $icell
+            i32.load offset=4
+            i32.const 2
+            i32.shl
+            set_local $inext
+            ;; if ( lhnchar === 0 ) {
+            get_local $lhnchar
+            i32.eqz
+            if
+                ;; if ( inext === 0 || this.buf32[inext+2] === 0 ) { return 0; }
+                get_local $inext
+                i32.eqz
+                if
+                    i32.const 0
+                    return
+                end
+                get_local $inext
+                i32.load offset=8
+                i32.eqz
+                if
+                    i32.const 0
+                    return
+                end
+                ;; this.buf32[icell+1] = this.addCell(0, inext, 0);
+                get_local $icell
+                i32.const 0
+                get_local $inext
+                i32.const 2
+                i32.shr_u
+                i32.const 0
+                call $addCell
+                i32.store offset=4
+            else
+                ;; if ( inext !== 0 ) {
+                get_local $inext
+                if
+                    ;; icell = inext;
+                    get_local $inext
+                    set_local $icell
+                    br $nextSegment
+                end
+                ;; if ( this.buf[lhnchar-1] === 0x2E /* '.' */ ) { return -1; }
+                get_local $lhnchar
+                i32.const -1
+                i32.add
+                i32.load8_u
+                i32.const 0x2E
+                i32.eq
+                if
+                    i32.const -1
+                    return
+                end
+                ;; inext = this.addCell(0, 0, 0);
+                ;; this.buf32[icell+1] = inext;
+                get_local $icell
+                i32.const 0
+                i32.const 0
+                i32.const 0
+                call $addCell
+                tee_local $inext
+                i32.store offset=4
+                ;; this.buf32[inext+1] = this.addCell(0, 0, this.addSegment(lhnchar));
+                get_local $inext
+                i32.const 2
+                i32.shl
+                i32.const 0
+                i32.const 0
+                get_local $lhnchar
+                call $addSegment
+                call $addCell
+                i32.store offset=4
+            end
+        else
+            ;; isegchar0 -= char0;
+            get_local $icell
+            get_local $isegchar0
+            get_local $char0
+            i32.sub
+            tee_local $isegchar0
+            ;; this.buf32[icell+2] = isegchar << 24 | isegchar0;
+            get_local $isegchar
+            i32.const 24
+            i32.shl
+            i32.or
+            i32.store offset=8
+            ;; inext = this.addCell(
+            ;;     0,
+            ;;     this.buf32[icell+1],
+            ;;     lsegchar - isegchar << 24 | isegchar0 + isegchar
+            ;; );
+            ;; this.buf32[icell+1] = inext;
+            get_local $icell
+            i32.const 0
+            get_local $icell
+            i32.load offset=4
+            get_local $lsegchar
+            get_local $isegchar
+            i32.sub
+            i32.const 24
+            i32.shl
+            get_local $isegchar0
+            get_local $isegchar
+            i32.add
+            i32.or
+            call $addCell
+            tee_local $inext
+            i32.store offset=4
+            ;; if ( lhnchar === 0 ) {
+            get_local $lhnchar
+            i32.eqz
+            if
+                ;; this.buf32[icell+1] = this.addCell(0, inext, 0);
+                get_local $icell
+                i32.const 0
+                get_local $inext
+                i32.const 0
+                call $addCell
+                i32.store offset=4
+            else
+                ;; this.buf32[inext+0] = this.addCell(0, 0, this.addSegment(lhnchar));
+                get_local $inext
+                i32.const 2
+                i32.shl
+                i32.const 0
+                i32.const 0
+                get_local $lhnchar
+                call $addSegment
+                call $addCell
+                i32.store
+            end
+        end
+        ;; return 1;
+        i32.const 1
+        return
+    end
+    ;;
+    i32.const 1
+)
+
+;;
+;; Private functions
+;;
+
+;;
+;; unsigned int addCell(idown, iright, vseg)
+;;
+;; Add a new cell, return cell index.
+;;
+(func $addCell
+    (param $idown i32)
+    (param $iright i32)
+    (param $vseg i32)
+    (result i32)                ;; result: index of added cell
+    (local $icell i32)
+    ;;
+    ;; let icell = this.buf32[HNBIGTRIE_TRIE1_SLOT];
+    ;; this.buf32[HNBIGTRIE_TRIE1_SLOT] = icell + 12;
+    i32.const 260
+    i32.const 260
+    i32.load
+    tee_local $icell
+    i32.const 12
+    i32.add
+    i32.store
+    ;; this.buf32[icell+0] = idown;
+    get_local $icell
+    get_local $idown
+    i32.store
+    ;; this.buf32[icell+1] = iright;
+    get_local $icell
+    get_local $iright
+    i32.store offset=4
+    ;; this.buf32[icell+2] = v;
+    get_local $icell
+    get_local $vseg
+    i32.store offset=8
+    ;; return icell;
+    get_local $icell
+    i32.const 2
+    i32.shr_u
+)
+
+;;
+;; unsigned int addSegment(lsegchar)
+;;
+;; Store a segment of characters and return a segment descriptor. The segment
+;; is created from the character data in the needle buffer.
+;;
+(func $addSegment
+    (param $lsegchar i32)
+    (result i32)                ;; result: segment descriptor
+    (local $char1 i32)          ;; offset to end of character data section
+    (local $isegchar i32)       ;; relative offset to first character of segment
+    (local $i i32)              ;; iterator
+    ;;
+    ;; if ( lsegchar === 0 ) { return 0; }
+    get_local $lsegchar
+    i32.eqz
+    if
+        i32.const 0
+        return
+    end
+    ;; let char1 = this.buf32[HNBIGTRIE_CHAR1_SLOT];
+    i32.const 268
+    i32.load
+    tee_local $char1
+    ;; const isegchar = char1 - this.buf32[HNBIGTRIE_CHAR0_SLOT];
+    i32.const 264
+    i32.load
+    i32.sub
+    set_local $isegchar
+    ;; let i = lsegchar;
+    get_local $lsegchar
+    set_local $i
+    ;; do {
+    block $endOfSegment loop
+        ;; this.buf[char1++] = this.buf[--i];
+        get_local $char1
+        get_local $i
+        i32.const -1
+        i32.add
+        tee_local $i
+        i32.load8_u
+        i32.store8
+        get_local $char1
+        i32.const 1
+        i32.add
+        set_local $char1
+        ;; } while ( i !== 0 );
+        get_local $i
+        i32.eqz
+        br_if $endOfSegment
+        br 0
+    end end
+    ;; this.buf32[HNBIGTRIE_CHAR1_SLOT] = char1;
+    i32.const 268
+    get_local $char1
+    i32.store
+    ;; return (lsegchar << 24) | isegchar;
+    get_local $lsegchar
+    i32.const 24
+    i32.shl
+    get_local $isegchar
+    i32.or
+)
+
+;;
+;; module end
+;;
+)

src/lib/codemirror/addon/display/panel.js

@@ -0,0 +1,127 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: https://codemirror.net/LICENSE
+
+(function(mod) {
+  if (typeof exports == "object" && typeof module == "object") // CommonJS
+    mod(require("../../lib/codemirror"));
+  else if (typeof define == "function" && define.amd) // AMD
+    define(["../../lib/codemirror"], mod);
+  else // Plain browser env
+    mod(CodeMirror);
+})(function(CodeMirror) {
+  CodeMirror.defineExtension("addPanel", function(node, options) {
+    options = options || {};
+
+    if (!this.state.panels) initPanels(this);
+
+    var info = this.state.panels;
+    var wrapper = info.wrapper;
+    var cmWrapper = this.getWrapperElement();
+    var replace = options.replace instanceof Panel && !options.replace.cleared;
+
+    if (options.after instanceof Panel && !options.after.cleared) {
+      wrapper.insertBefore(node, options.before.node.nextSibling);
+    } else if (options.before instanceof Panel && !options.before.cleared) {
+      wrapper.insertBefore(node, options.before.node);
+    } else if (replace) {
+      wrapper.insertBefore(node, options.replace.node);
+      info.panels++;
+      options.replace.clear();
+    } else if (options.position == "bottom") {
+      wrapper.appendChild(node);
+    } else if (options.position == "before-bottom") {
+      wrapper.insertBefore(node, cmWrapper.nextSibling);
+    } else if (options.position == "after-top") {
+      wrapper.insertBefore(node, cmWrapper);
+    } else {
+      wrapper.insertBefore(node, wrapper.firstChild);
+    }
+
+    var height = (options && options.height) || node.offsetHeight;
+    this._setSize(null, info.heightLeft -= height);
+    if (!replace) {
+      info.panels++;
+    }
+    if (options.stable && isAtTop(this, node))
+      this.scrollTo(null, this.getScrollInfo().top + height)
+
+    return new Panel(this, node, options, height);
+  });
+
+  function Panel(cm, node, options, height) {
+    this.cm = cm;
+    this.node = node;
+    this.options = options;
+    this.height = height;
+    this.cleared = false;
+  }
+
+  Panel.prototype.clear = function() {
+    if (this.cleared) return;
+    this.cleared = true;
+    var info = this.cm.state.panels;
+    this.cm._setSize(null, info.heightLeft += this.height);
+    if (this.options.stable && isAtTop(this.cm, this.node))
+      this.cm.scrollTo(null, this.cm.getScrollInfo().top - this.height)
+    info.wrapper.removeChild(this.node);
+    if (--info.panels == 0) removePanels(this.cm);
+  };
+
+  Panel.prototype.changed = function(height) {
+    var newHeight = height == null ? this.node.offsetHeight : height;
+    var info = this.cm.state.panels;
+    this.cm._setSize(null, info.heightLeft -= (newHeight - this.height));
+    this.height = newHeight;
+  };
+
+  function initPanels(cm) {
+    var wrap = cm.getWrapperElement();
+    var style = window.getComputedStyle ? window.getComputedStyle(wrap) : wrap.currentStyle;
+    var height = parseInt(style.height);
+    var info = cm.state.panels = {
+      setHeight: wrap.style.height,
+      heightLeft: height,
+      panels: 0,
+      wrapper: document.createElement("div")
+    };
+    wrap.parentNode.insertBefore(info.wrapper, wrap);
+    var hasFocus = cm.hasFocus();
+    info.wrapper.appendChild(wrap);
+    if (hasFocus) cm.focus();
+
+    cm._setSize = cm.setSize;
+    if (height != null) cm.setSize = function(width, newHeight) {
+      if (newHeight == null) return this._setSize(width, newHeight);
+      info.setHeight = newHeight;
+      if (typeof newHeight != "number") {
+        var px = /^(\d+\.?\d*)px$/.exec(newHeight);
+        if (px) {
+          newHeight = Number(px[1]);
+        } else {
+          info.wrapper.style.height = newHeight;
+          newHeight = info.wrapper.offsetHeight;
+          info.wrapper.style.height = "";
+        }
+      }
+      cm._setSize(width, info.heightLeft += (newHeight - height));
+      height = newHeight;
+    };
+  }
+
+  function removePanels(cm) {
+    var info = cm.state.panels;
+    cm.state.panels = null;
+
+    var wrap = cm.getWrapperElement();
+    info.wrapper.parentNode.replaceChild(wrap, info.wrapper);
+    wrap.style.height = info.setHeight;
+    cm.setSize = cm._setSize;
+    cm.setSize();
+  }
+
+  function isAtTop(cm, dom) {
+    for (var sibling = dom.nextSibling; sibling; sibling = sibling.nextSibling)
+      if (sibling == cm.getWrapperElement()) return true
+    return false
+  }
+});

src/lib/codemirror/addon/scroll/annotatescrollbar.js

@@ -0,0 +1,122 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: https://codemirror.net/LICENSE
+
+(function(mod) {
+  if (typeof exports == "object" && typeof module == "object") // CommonJS
+    mod(require("../../lib/codemirror"));
+  else if (typeof define == "function" && define.amd) // AMD
+    define(["../../lib/codemirror"], mod);
+  else // Plain browser env
+    mod(CodeMirror);
+})(function(CodeMirror) {
+  "use strict";
+
+  CodeMirror.defineExtension("annotateScrollbar", function(options) {
+    if (typeof options == "string") options = {className: options};
+    return new Annotation(this, options);
+  });
+
+  CodeMirror.defineOption("scrollButtonHeight", 0);
+
+  function Annotation(cm, options) {
+    this.cm = cm;
+    this.options = options;
+    this.buttonHeight = options.scrollButtonHeight || cm.getOption("scrollButtonHeight");
+    this.annotations = [];
+    this.doRedraw = this.doUpdate = null;
+    this.div = cm.getWrapperElement().appendChild(document.createElement("div"));
+    this.div.style.cssText = "position: absolute; right: 0; top: 0; z-index: 7; pointer-events: none";
+    this.computeScale();
+
+    function scheduleRedraw(delay) {
+      clearTimeout(self.doRedraw);
+      self.doRedraw = setTimeout(function() { self.redraw(); }, delay);
+    }
+
+    var self = this;
+    cm.on("refresh", this.resizeHandler = function() {
+      clearTimeout(self.doUpdate);
+      self.doUpdate = setTimeout(function() {
+        if (self.computeScale()) scheduleRedraw(20);
+      }, 100);
+    });
+    cm.on("markerAdded", this.resizeHandler);
+    cm.on("markerCleared", this.resizeHandler);
+    if (options.listenForChanges !== false)
+      cm.on("change", this.changeHandler = function() {
+        scheduleRedraw(250);
+      });
+  }
+
+  Annotation.prototype.computeScale = function() {
+    var cm = this.cm;
+    var hScale = (cm.getWrapperElement().clientHeight - cm.display.barHeight - this.buttonHeight * 2) /
+      cm.getScrollerElement().scrollHeight
+    if (hScale != this.hScale) {
+      this.hScale = hScale;
+      return true;
+    }
+  };
+
+  Annotation.prototype.update = function(annotations) {
+    this.annotations = annotations;
+    this.redraw();
+  };
+
+  Annotation.prototype.redraw = function(compute) {
+    if (compute !== false) this.computeScale();
+    var cm = this.cm, hScale = this.hScale;
+
+    var frag = document.createDocumentFragment(), anns = this.annotations;
+
+    var wrapping = cm.getOption("lineWrapping");
+    var singleLineH = wrapping && cm.defaultTextHeight() * 1.5;
+    var curLine = null, curLineObj = null;
+    function getY(pos, top) {
+      if (curLine != pos.line) {
+        curLine = pos.line;
+        curLineObj = cm.getLineHandle(curLine);
+      }
+      if ((curLineObj.widgets && curLineObj.widgets.length) ||
+          (wrapping && curLineObj.height > singleLineH))
+        return cm.charCoords(pos, "local")[top ? "top" : "bottom"];
+      var topY = cm.heightAtLine(curLineObj, "local");
+      return topY + (top ? 0 : curLineObj.height);
+    }
+
+    var lastLine = cm.lastLine()
+    if (cm.display.barWidth) for (var i = 0, nextTop; i < anns.length; i++) {
+      var ann = anns[i];
+      if (ann.to.line > lastLine) continue;
+      var top = nextTop || getY(ann.from, true) * hScale;
+      var bottom = getY(ann.to, false) * hScale;
+      while (i < anns.length - 1) {
+        if (anns[i + 1].to.line > lastLine) break;
+        nextTop = getY(anns[i + 1].from, true) * hScale;
+        if (nextTop > bottom + .9) break;
+        ann = anns[++i];
+        bottom = getY(ann.to, false) * hScale;
+      }
+      if (bottom == top) continue;
+      var height = Math.max(bottom - top, 3);
+
+      var elt = frag.appendChild(document.createElement("div"));
+      elt.style.cssText = "position: absolute; right: 0px; width: " + Math.max(cm.display.barWidth - 1, 2) + "px; top: "
+        + (top + this.buttonHeight) + "px; height: " + height + "px";
+      elt.className = this.options.className;
+      if (ann.id) {
+        elt.setAttribute("annotation-id", ann.id);
+      }
+    }
+    this.div.textContent = "";
+    this.div.appendChild(frag);
+  };
+
+  Annotation.prototype.clear = function() {
+    this.cm.off("refresh", this.resizeHandler);
+    this.cm.off("markerAdded", this.resizeHandler);
+    this.cm.off("markerCleared", this.resizeHandler);
+    if (this.changeHandler) this.cm.off("change", this.changeHandler);
+    this.div.parentNode.removeChild(this.div);
+  };
+});

src/lib/codemirror/addon/search/matchesonscrollbar.css

@@ -0,0 +1,8 @@
+.CodeMirror-search-match {
+  background: gold;
+  border-top: 1px solid orange;
+  border-bottom: 1px solid orange;
+  -moz-box-sizing: border-box;
+  box-sizing: border-box;
+  opacity: .5;
+}

src/lib/codemirror/addon/search/matchesonscrollbar.js

@@ -0,0 +1,97 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: https://codemirror.net/LICENSE
+
+(function(mod) {
+  if (typeof exports == "object" && typeof module == "object") // CommonJS
+    mod(require("../../lib/codemirror"), require("./searchcursor"), require("../scroll/annotatescrollbar"));
+  else if (typeof define == "function" && define.amd) // AMD
+    define(["../../lib/codemirror", "./searchcursor", "../scroll/annotatescrollbar"], mod);
+  else // Plain browser env
+    mod(CodeMirror);
+})(function(CodeMirror) {
+  "use strict";
+
+  CodeMirror.defineExtension("showMatchesOnScrollbar", function(query, caseFold, options) {
+    if (typeof options == "string") options = {className: options};
+    if (!options) options = {};
+    return new SearchAnnotation(this, query, caseFold, options);
+  });
+
+  function SearchAnnotation(cm, query, caseFold, options) {
+    this.cm = cm;
+    this.options = options;
+    var annotateOptions = {listenForChanges: false};
+    for (var prop in options) annotateOptions[prop] = options[prop];
+    if (!annotateOptions.className) annotateOptions.className = "CodeMirror-search-match";
+    this.annotation = cm.annotateScrollbar(annotateOptions);
+    this.query = query;
+    this.caseFold = caseFold;
+    this.gap = {from: cm.firstLine(), to: cm.lastLine() + 1};
+    this.matches = [];
+    this.update = null;
+
+    this.findMatches();
+    this.annotation.update(this.matches);
+
+    var self = this;
+    cm.on("change", this.changeHandler = function(_cm, change) { self.onChange(change); });
+  }
+
+  var MAX_MATCHES = 1000;
+
+  SearchAnnotation.prototype.findMatches = function() {
+    if (!this.gap) return;
+    for (var i = 0; i < this.matches.length; i++) {
+      var match = this.matches[i];
+      if (match.from.line >= this.gap.to) break;
+      if (match.to.line >= this.gap.from) this.matches.splice(i--, 1);
+    }
+    var cursor = this.cm.getSearchCursor(this.query, CodeMirror.Pos(this.gap.from, 0), {caseFold: this.caseFold, multiline: this.options.multiline});
+    var maxMatches = this.options && this.options.maxMatches || MAX_MATCHES;
+    while (cursor.findNext()) {
+      var match = {from: cursor.from(), to: cursor.to()};
+      if (match.from.line >= this.gap.to) break;
+      this.matches.splice(i++, 0, match);
+      if (this.matches.length > maxMatches) break;
+    }
+    this.gap = null;
+  };
+
+  function offsetLine(line, changeStart, sizeChange) {
+    if (line <= changeStart) return line;
+    return Math.max(changeStart, line + sizeChange);
+  }
+
+  SearchAnnotation.prototype.onChange = function(change) {
+    var startLine = change.from.line;
+    var endLine = CodeMirror.changeEnd(change).line;
+    var sizeChange = endLine - change.to.line;
+    if (this.gap) {
+      this.gap.from = Math.min(offsetLine(this.gap.from, startLine, sizeChange), change.from.line);
+      this.gap.to = Math.max(offsetLine(this.gap.to, startLine, sizeChange), change.from.line);
+    } else {
+      this.gap = {from: change.from.line, to: endLine + 1};
+    }
+
+    if (sizeChange) for (var i = 0; i < this.matches.length; i++) {
+      var match = this.matches[i];
+      var newFrom = offsetLine(match.from.line, startLine, sizeChange);
+      if (newFrom != match.from.line) match.from = CodeMirror.Pos(newFrom, match.from.ch);
+      var newTo = offsetLine(match.to.line, startLine, sizeChange);
+      if (newTo != match.to.line) match.to = CodeMirror.Pos(newTo, match.to.ch);
+    }
+    clearTimeout(this.update);
+    var self = this;
+    this.update = setTimeout(function() { self.updateAfterChange(); }, 250);
+  };
+
+  SearchAnnotation.prototype.updateAfterChange = function() {
+    this.findMatches();
+    this.annotation.update(this.matches);
+  };
+
+  SearchAnnotation.prototype.clear = function() {
+    this.cm.off("change", this.changeHandler);
+    this.annotation.clear();
+  };
+});

src/lib/codemirror/addon/search/searchcursor.js

@@ -0,0 +1,293 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: https://codemirror.net/LICENSE
+
+(function(mod) {
+  if (typeof exports == "object" && typeof module == "object") // CommonJS
+    mod(require("../../lib/codemirror"))
+  else if (typeof define == "function" && define.amd) // AMD
+    define(["../../lib/codemirror"], mod)
+  else // Plain browser env
+    mod(CodeMirror)
+})(function(CodeMirror) {
+  "use strict"
+  var Pos = CodeMirror.Pos
+
+  function regexpFlags(regexp) {
+    var flags = regexp.flags
+    return flags != null ? flags : (regexp.ignoreCase ? "i" : "")
+      + (regexp.global ? "g" : "")
+      + (regexp.multiline ? "m" : "")
+  }
+
+  function ensureFlags(regexp, flags) {
+    var current = regexpFlags(regexp), target = current
+    for (var i = 0; i < flags.length; i++) if (target.indexOf(flags.charAt(i)) == -1)
+      target += flags.charAt(i)
+    return current == target ? regexp : new RegExp(regexp.source, target)
+  }
+
+  function maybeMultiline(regexp) {
+    return /\\s|\\n|\n|\\W|\\D|\[\^/.test(regexp.source)
+  }
+
+  function searchRegexpForward(doc, regexp, start) {
+    regexp = ensureFlags(regexp, "g")
+    for (var line = start.line, ch = start.ch, last = doc.lastLine(); line <= last; line++, ch = 0) {
+      regexp.lastIndex = ch
+      var string = doc.getLine(line), match = regexp.exec(string)
+      if (match)
+        return {from: Pos(line, match.index),
+                to: Pos(line, match.index + match[0].length),
+                match: match}
+    }
+  }
+
+  function searchRegexpForwardMultiline(doc, regexp, start) {
+    if (!maybeMultiline(regexp)) return searchRegexpForward(doc, regexp, start)
+
+    regexp = ensureFlags(regexp, "gm")
+    var string, chunk = 1
+    for (var line = start.line, last = doc.lastLine(); line <= last;) {
+      // This grows the search buffer in exponentially-sized chunks
+      // between matches, so that nearby matches are fast and don't
+      // require concatenating the whole document (in case we're
+      // searching for something that has tons of matches), but at the
+      // same time, the amount of retries is limited.
+      for (var i = 0; i < chunk; i++) {
+        if (line > last) break
+        var curLine = doc.getLine(line++)
+        string = string == null ? curLine : string + "\n" + curLine
+      }
+      chunk = chunk * 2
+      regexp.lastIndex = start.ch
+      var match = regexp.exec(string)
+      if (match) {
+        var before = string.slice(0, match.index).split("\n"), inside = match[0].split("\n")
+        var startLine = start.line + before.length - 1, startCh = before[before.length - 1].length
+        return {from: Pos(startLine, startCh),
+                to: Pos(startLine + inside.length - 1,
+                        inside.length == 1 ? startCh + inside[0].length : inside[inside.length - 1].length),
+                match: match}
+      }
+    }
+  }
+
+  function lastMatchIn(string, regexp) {
+    var cutOff = 0, match
+    for (;;) {
+      regexp.lastIndex = cutOff
+      var newMatch = regexp.exec(string)
+      if (!newMatch) return match
+      match = newMatch
+      cutOff = match.index + (match[0].length || 1)
+      if (cutOff == string.length) return match
+    }
+  }
+
+  function searchRegexpBackward(doc, regexp, start) {
+    regexp = ensureFlags(regexp, "g")
+    for (var line = start.line, ch = start.ch, first = doc.firstLine(); line >= first; line--, ch = -1) {
+      var string = doc.getLine(line)
+      if (ch > -1) string = string.slice(0, ch)
+      var match = lastMatchIn(string, regexp)
+      if (match)
+        return {from: Pos(line, match.index),
+                to: Pos(line, match.index + match[0].length),
+                match: match}
+    }
+  }
+
+  function searchRegexpBackwardMultiline(doc, regexp, start) {
+    regexp = ensureFlags(regexp, "gm")
+    var string, chunk = 1
+    for (var line = start.line, first = doc.firstLine(); line >= first;) {
+      for (var i = 0; i < chunk; i++) {
+        var curLine = doc.getLine(line--)
+        string = string == null ? curLine.slice(0, start.ch) : curLine + "\n" + string
+      }
+      chunk *= 2
+
+      var match = lastMatchIn(string, regexp)
+      if (match) {
+        var before = string.slice(0, match.index).split("\n"), inside = match[0].split("\n")
+        var startLine = line + before.length, startCh = before[before.length - 1].length
+        return {from: Pos(startLine, startCh),
+                to: Pos(startLine + inside.length - 1,
+                        inside.length == 1 ? startCh + inside[0].length : inside[inside.length - 1].length),
+                match: match}
+      }
+    }
+  }
+
+  var doFold, noFold
+  if (String.prototype.normalize) {
+    doFold = function(str) { return str.normalize("NFD").toLowerCase() }
+    noFold = function(str) { return str.normalize("NFD") }
+  } else {
+    doFold = function(str) { return str.toLowerCase() }
+    noFold = function(str) { return str }
+  }
+
+  // Maps a position in a case-folded line back to a position in the original line
+  // (compensating for codepoints increasing in number during folding)
+  function adjustPos(orig, folded, pos, foldFunc) {
+    if (orig.length == folded.length) return pos
+    for (var min = 0, max = pos + Math.max(0, orig.length - folded.length);;) {
+      if (min == max) return min
+      var mid = (min + max) >> 1
+      var len = foldFunc(orig.slice(0, mid)).length
+      if (len == pos) return mid
+      else if (len > pos) max = mid
+      else min = mid + 1
+    }
+  }
+
+  function searchStringForward(doc, query, start, caseFold) {
+    // Empty string would match anything and never progress, so we
+    // define it to match nothing instead.
+    if (!query.length) return null
+    var fold = caseFold ? doFold : noFold
+    var lines = fold(query).split(/\r|\n\r?/)
+
+    search: for (var line = start.line, ch = start.ch, last = doc.lastLine() + 1 - lines.length; line <= last; line++, ch = 0) {
+      var orig = doc.getLine(line).slice(ch), string = fold(orig)
+      if (lines.length == 1) {
+        var found = string.indexOf(lines[0])
+        if (found == -1) continue search
+        var start = adjustPos(orig, string, found, fold) + ch
+        return {from: Pos(line, adjustPos(orig, string, found, fold) + ch),
+                to: Pos(line, adjustPos(orig, string, found + lines[0].length, fold) + ch)}
+      } else {
+        var cutFrom = string.length - lines[0].length
+        if (string.slice(cutFrom) != lines[0]) continue search
+        for (var i = 1; i < lines.length - 1; i++)
+          if (fold(doc.getLine(line + i)) != lines[i]) continue search
+        var end = doc.getLine(line + lines.length - 1), endString = fold(end), lastLine = lines[lines.length - 1]
+        if (endString.slice(0, lastLine.length) != lastLine) continue search
+        return {from: Pos(line, adjustPos(orig, string, cutFrom, fold) + ch),
+                to: Pos(line + lines.length - 1, adjustPos(end, endString, lastLine.length, fold))}
+      }
+    }
+  }
+
+  function searchStringBackward(doc, query, start, caseFold) {
+    if (!query.length) return null
+    var fold = caseFold ? doFold : noFold
+    var lines = fold(query).split(/\r|\n\r?/)
+
+    search: for (var line = start.line, ch = start.ch, first = doc.firstLine() - 1 + lines.length; line >= first; line--, ch = -1) {
+      var orig = doc.getLine(line)
+      if (ch > -1) orig = orig.slice(0, ch)
+      var string = fold(orig)
+      if (lines.length == 1) {
+        var found = string.lastIndexOf(lines[0])
+        if (found == -1) continue search
+        return {from: Pos(line, adjustPos(orig, string, found, fold)),
+                to: Pos(line, adjustPos(orig, string, found + lines[0].length, fold))}
+      } else {
+        var lastLine = lines[lines.length - 1]
+        if (string.slice(0, lastLine.length) != lastLine) continue search
+        for (var i = 1, start = line - lines.length + 1; i < lines.length - 1; i++)
+          if (fold(doc.getLine(start + i)) != lines[i]) continue search
+        var top = doc.getLine(line + 1 - lines.length), topString = fold(top)
+        if (topString.slice(topString.length - lines[0].length) != lines[0]) continue search
+        return {from: Pos(line + 1 - lines.length, adjustPos(top, topString, top.length - lines[0].length, fold)),
+                to: Pos(line, adjustPos(orig, string, lastLine.length, fold))}
+      }
+    }
+  }
+
+  function SearchCursor(doc, query, pos, options) {
+    this.atOccurrence = false
+    this.doc = doc
+    pos = pos ? doc.clipPos(pos) : Pos(0, 0)
+    this.pos = {from: pos, to: pos}
+
+    var caseFold
+    if (typeof options == "object") {
+      caseFold = options.caseFold
+    } else { // Backwards compat for when caseFold was the 4th argument
+      caseFold = options
+      options = null
+    }
+
+    if (typeof query == "string") {
+      if (caseFold == null) caseFold = false
+      this.matches = function(reverse, pos) {
+        return (reverse ? searchStringBackward : searchStringForward)(doc, query, pos, caseFold)
+      }
+    } else {
+      query = ensureFlags(query, "gm")
+      if (!options || options.multiline !== false)
+        this.matches = function(reverse, pos) {
+          return (reverse ? searchRegexpBackwardMultiline : searchRegexpForwardMultiline)(doc, query, pos)
+        }
+      else
+        this.matches = function(reverse, pos) {
+          return (reverse ? searchRegexpBackward : searchRegexpForward)(doc, query, pos)
+        }
+    }
+  }
+
+  SearchCursor.prototype = {
+    findNext: function() {return this.find(false)},
+    findPrevious: function() {return this.find(true)},
+
+    find: function(reverse) {
+      var result = this.matches(reverse, this.doc.clipPos(reverse ? this.pos.from : this.pos.to))
+
+      // Implements weird auto-growing behavior on null-matches for
+      // backwards-compatiblity with the vim code (unfortunately)
+      while (result && CodeMirror.cmpPos(result.from, result.to) == 0) {
+        if (reverse) {
+          if (result.from.ch) result.from = Pos(result.from.line, result.from.ch - 1)
+          else if (result.from.line == this.doc.firstLine()) result = null
+          else result = this.matches(reverse, this.doc.clipPos(Pos(result.from.line - 1)))
+        } else {
+          if (result.to.ch < this.doc.getLine(result.to.line).length) result.to = Pos(result.to.line, result.to.ch + 1)
+          else if (result.to.line == this.doc.lastLine()) result = null
+          else result = this.matches(reverse, Pos(result.to.line + 1, 0))
+        }
+      }
+
+      if (result) {
+        this.pos = result
+        this.atOccurrence = true
+        return this.pos.match || true
+      } else {
+        var end = Pos(reverse ? this.doc.firstLine() : this.doc.lastLine() + 1, 0)
+        this.pos = {from: end, to: end}
+        return this.atOccurrence = false
+      }
+    },
+
+    from: function() {if (this.atOccurrence) return this.pos.from},
+    to: function() {if (this.atOccurrence) return this.pos.to},
+
+    replace: function(newText, origin) {
+      if (!this.atOccurrence) return
+      var lines = CodeMirror.splitLines(newText)
+      this.doc.replaceRange(lines, this.pos.from, this.pos.to, origin)
+      this.pos.to = Pos(this.pos.from.line + lines.length - 1,
+                        lines[lines.length - 1].length + (lines.length == 1 ? this.pos.from.ch : 0))
+    }
+  }
+
+  CodeMirror.defineExtension("getSearchCursor", function(query, pos, caseFold) {
+    return new SearchCursor(this.doc, query, pos, caseFold)
+  })
+  CodeMirror.defineDocExtension("getSearchCursor", function(query, pos, caseFold) {
+    return new SearchCursor(this, query, pos, caseFold)
+  })
+
+  CodeMirror.defineExtension("selectMatches", function(query, caseFold) {
+    var ranges = []
+    var cur = this.getSearchCursor(query, this.getCursor("from"), caseFold)
+    while (cur.findNext()) {
+      if (CodeMirror.cmpPos(cur.to(), this.getCursor("to")) > 0) break
+      ranges.push({anchor: cur.from(), head: cur.to()})
+    }
+    if (ranges.length)
+      this.setSelections(ranges, 0)
+  })
+});

src/lib/lz4/README.md

@@ -0,0 +1,52 @@
+## Purpose
+
+The purpose of this library is to implement LZ4 compression/decompression,
+as documented at the official LZ4 repository:
+
+https://github.com/lz4/lz4/blob/dev/doc/lz4_Block_format.md
+
+The files in this directory are developed as a separate project at:
+
+https://github.com/gorhill/lz4-wasm
+
+## Files
+
+### `lz4-block-codec-any.js`
+
+The purpose is to instanciate a WebAssembly- or pure javascript-based
+LZ4 block codec.
+
+If the choosen implementation is not specified, there will be an attempt to
+create a WebAssembly-based instance. If for whatever reason this fails, a
+pure javascript-based instance will be created.
+
+The script for either instance are dynamically loaded and only when needed,
+such that no resources are wasted by keeping in memory code which won't be
+used.
+ 
+### `lz4-block-codec-wasm.js`
+
+This contains the code to instanciate WebAssembly-based LZ4 block codec. Note
+that the WebAssembly module is loaded using a `same-origin` fetch, hence
+ensuring that no code outside the package is loaded.
+
+### `lz4-block-codec-js.js`
+
+This contains the code to instanciate pure javascript-based LZ4 block codec.
+
+This is used as a fallback implementation should WebAssembly not be available
+for whatever reason.
+
+### `lz4-block-codec.wasm`
+
+This is the WebAssembly module, loaded by `lz4-block-codec-wasm.js` using a
+`same-origin` fetch.
+
+### `lz4-block-codec.wat`
+
+The WebAssembly source code used to generate the WebAssembly module `lz4-block-codec.wasm`.
+
+    wat2wasm ./lz4-block-codec.wat -o ./lz4-block-codec.wasm
+    wasm-opt ./lz4-block-codec.wasm -O4 -o ./lz4-block-codec.wasm
+
+You can get `wat2wasm` at <https://github.com/WebAssembly/wabt>, and `wasm-opt` at <https://github.com/WebAssembly/binaryen>.

src/lib/lz4/lz4-block-codec-any.js

@@ -0,0 +1,151 @@
+/*******************************************************************************
+
+    lz4-block-codec-any.js
+        A wrapper to instanciate a wasm- and/or js-based LZ4 block
+        encoder/decoder.
+    Copyright (C) 2018 Raymond Hill
+
+    BSD-2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are
+    met:
+
+    1. Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    2. Redistributions in binary form must reproduce the above
+    copyright notice, this list of conditions and the following disclaimer
+    in the documentation and/or other materials provided with the
+    distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+    OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+    Home: https://github.com/gorhill/lz4-wasm
+
+    I used the same license as the one picked by creator of LZ4 out of respect
+    for his creation, see https://lz4.github.io/lz4/
+
+*/
+
+'use strict';
+
+/******************************************************************************/
+
+(function(context) {                    // >>>> Start of private namespace
+
+/******************************************************************************/
+
+const wd = (function() {
+    let url = document.currentScript.src;
+    let match = /[^\/]+$/.exec(url);
+    return match !== null ?
+        url.slice(0, match.index) :
+        '';
+})();
+
+const removeScript = function(script) {
+    if ( !script ) { return; }
+    if ( script.parentNode === null ) { return; }
+    script.parentNode.removeChild(script);
+};
+
+const createInstanceWASM = function() {
+    if ( context.LZ4BlockWASM instanceof Function ) {
+        const instance = new context.LZ4BlockWASM();
+        return instance.init().then(ok => ok ? instance : null);
+    }
+    if ( context.LZ4BlockWASM === null ) {
+        return Promise.resolve(null);
+    }
+    return new Promise(resolve => {
+        const script = document.createElement('script');
+        script.src = wd + 'lz4-block-codec-wasm.js';
+        script.addEventListener('load', ( ) => {
+            if ( context.LZ4BlockWASM instanceof Function === false ) {
+                context.LZ4BlockWASM = null;
+                resolve(null);
+                return;
+            }
+            const instance = new context.LZ4BlockWASM();
+            instance.init().then(ok => { resolve(ok ? instance : null); });
+        });
+        script.addEventListener('error', ( ) => {
+            context.LZ4BlockWASM = null;
+            resolve(null);
+        });
+        document.head.appendChild(script);
+        removeScript(script);
+    });
+};
+
+const createInstanceJS = function() {
+    if ( context.LZ4BlockJS instanceof Function ) {
+        const instance = new context.LZ4BlockJS();
+        return instance.init().then(ok => ok ? instance : null);
+    }
+    if ( context.LZ4BlockJS === null ) {
+        return Promise.resolve(null);
+    }
+    return new Promise(resolve => {
+        const script = document.createElement('script');
+        script.src = wd + 'lz4-block-codec-js.js';
+        script.addEventListener('load', ( ) => {
+            if ( context.LZ4BlockJS instanceof Function === false ) {
+                context.LZ4BlockJS = null;
+                resolve(null);
+                return;
+            }
+            const instance = new context.LZ4BlockJS();
+            instance.init().then(ok => { resolve(ok ? instance : null); });
+        });
+        script.addEventListener('error', ( ) => {
+            context.LZ4BlockJS = null;
+            resolve(null);
+        });
+        document.head.appendChild(script);
+        removeScript(script);
+    });
+};
+
+/******************************************************************************/
+
+context.lz4BlockCodec = {
+    createInstance: function(flavor) {
+        let instantiator;
+        if ( flavor === 'wasm' ) {
+            instantiator = createInstanceWASM;
+        } else if ( flavor === 'js' ) {
+            instantiator = createInstanceJS;
+        } else {
+            instantiator = createInstanceWASM || createInstanceJS;
+        }
+        return (instantiator)().then(instance => {
+            if ( instance ) { return instance; }
+            if ( flavor === undefined ) {
+                return createInstanceJS();
+            }
+            return null;
+        });
+    },
+    reset: function() {
+        context.LZ4BlockWASM = undefined;
+        context.LZ4BlockJS = undefined;
+    }
+};
+
+/******************************************************************************/
+
+})(this || self);                       // <<<< End of private namespace
+
+/******************************************************************************/

src/lib/lz4/lz4-block-codec-js.js

@@ -0,0 +1,297 @@
+/*******************************************************************************
+
+    lz4-block-codec-js.js
+        A javascript wrapper around a pure javascript implementation of
+        LZ4 block format codec.
+    Copyright (C) 2018 Raymond Hill
+
+    BSD-2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are
+    met:
+
+    1. Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    2. Redistributions in binary form must reproduce the above
+    copyright notice, this list of conditions and the following disclaimer
+    in the documentation and/or other materials provided with the
+    distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+    OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+    Home: https://github.com/gorhill/lz4-wasm
+
+    I used the same license as the one picked by creator of LZ4 out of respect
+    for his creation, see https://lz4.github.io/lz4/
+
+*/
+
+'use strict';
+
+/******************************************************************************/
+
+(function(context) {                    // >>>> Start of private namespace
+
+/******************************************************************************/
+
+const growOutputBuffer = function(instance, size) {
+    if (
+        instance.outputBuffer === undefined ||
+        instance.outputBuffer.byteLength < size
+    ) {
+        instance.outputBuffer = new ArrayBuffer(size + 0xFFFF & 0x7FFF0000);
+    }
+    return instance.outputBuffer;
+};
+
+const encodeBound = function(size) {
+    return size > 0x7E000000 ?
+        0 :
+        size + (size / 255 | 0) + 16;
+};
+
+const encodeBlock = function(instance, iBuf, oOffset) {
+    let iLen = iBuf.byteLength;
+    if ( iLen >= 0x7E000000 ) { throw new RangeError(); }
+
+    // "The last match must start at least 12 bytes before end of block"
+    let lastMatchPos = iLen - 12;
+
+    // "The last 5 bytes are always literals"
+    let lastLiteralPos = iLen - 5;
+
+    if ( instance.hashTable === undefined ) {
+        instance.hashTable = new Int32Array(65536);
+    }
+    instance.hashTable.fill(-65536);
+
+    if ( iBuf instanceof ArrayBuffer ) {
+        iBuf = new Uint8Array(iBuf);
+    }
+
+    let oLen = oOffset + encodeBound(iLen);
+    let oBuf = new Uint8Array(growOutputBuffer(instance, oLen), 0, oLen);
+    let iPos = 0;
+    let oPos = oOffset;
+    let anchorPos = 0;
+
+    // sequence-finding loop
+    for (;;) {
+        let refPos;
+        let mOffset;
+        let sequence = iBuf[iPos] << 8 | iBuf[iPos+1] << 16 | iBuf[iPos+2] << 24;
+
+        // match-finding loop
+        while ( iPos <= lastMatchPos ) {
+            sequence = sequence >>> 8 | iBuf[iPos+3] << 24;
+            let hash = (sequence * 0x9E37 & 0xFFFF) + (sequence * 0x79B1 >>> 16) & 0xFFFF;
+            refPos = instance.hashTable[hash];
+            instance.hashTable[hash] = iPos;
+            mOffset = iPos - refPos;
+            if (
+                mOffset < 65536 &&
+                iBuf[refPos+0] === ((sequence       ) & 0xFF) &&
+                iBuf[refPos+1] === ((sequence >>>  8) & 0xFF) &&
+                iBuf[refPos+2] === ((sequence >>> 16) & 0xFF) &&
+                iBuf[refPos+3] === ((sequence >>> 24) & 0xFF)
+            ) {
+                break;
+            }
+            iPos += 1;
+        }
+
+        // no match found
+        if ( iPos > lastMatchPos ) { break; }
+
+        // match found
+        let lLen = iPos - anchorPos;
+        let mLen = iPos;
+        iPos += 4; refPos += 4;
+        while ( iPos < lastLiteralPos && iBuf[iPos] === iBuf[refPos] ) {
+            iPos += 1; refPos += 1;
+        }
+        mLen = iPos - mLen;
+        let token = mLen < 19 ? mLen - 4 : 15;
+
+        // write token, length of literals if needed
+        if ( lLen >= 15 ) {
+            oBuf[oPos++] = 0xF0 | token;
+            let l = lLen - 15;
+            while ( l >= 255 ) {
+                oBuf[oPos++] = 255;
+                l -= 255;
+            }
+            oBuf[oPos++] = l;
+        } else {
+            oBuf[oPos++] = (lLen << 4) | token;
+        }
+
+        // write literals
+        while ( lLen-- ) {
+            oBuf[oPos++] = iBuf[anchorPos++];
+        }
+
+        if ( mLen === 0 ) { break; }
+
+        // write offset of match
+        oBuf[oPos+0] = mOffset;
+        oBuf[oPos+1] = mOffset >>> 8;
+        oPos += 2;
+
+        // write length of match if needed
+        if ( mLen >= 19 ) {
+            let l = mLen - 19;
+            while ( l >= 255 ) {
+                oBuf[oPos++] = 255;
+                l -= 255;
+            }
+            oBuf[oPos++] = l;
+        }
+
+        anchorPos = iPos;
+    }
+
+    // last sequence is literals only
+    let lLen = iLen - anchorPos;
+    if ( lLen >= 15 ) {
+        oBuf[oPos++] = 0xF0;
+        let l = lLen - 15;
+        while ( l >= 255 ) {
+            oBuf[oPos++] = 255;
+            l -= 255;
+        }
+        oBuf[oPos++] = l;
+    } else {
+        oBuf[oPos++] = lLen << 4;
+    }
+    while ( lLen-- ) {
+        oBuf[oPos++] = iBuf[anchorPos++];
+    }
+
+    return new Uint8Array(oBuf.buffer, 0, oPos);
+};
+
+const decodeBlock = function(instance, iBuf, iOffset, oLen) {
+    let iLen = iBuf.byteLength;
+    let oBuf = new Uint8Array(growOutputBuffer(instance, oLen), 0, oLen);
+    let iPos = iOffset, oPos = 0;
+
+    while ( iPos < iLen ) {
+        let token = iBuf[iPos++];
+
+        // literals
+        let clen = token >>> 4;
+
+        // length of literals
+        if ( clen !== 0 ) {
+            if ( clen === 15 ) {
+                let l;
+                for (;;) {
+                    l = iBuf[iPos++];
+                    if ( l !== 255 ) { break; }
+                    clen += 255;
+                }
+                clen += l;
+            }
+
+            // copy literals
+            let end = iPos + clen;
+            while ( iPos < end ) {
+                oBuf[oPos++] = iBuf[iPos++];
+            }
+            if ( iPos === iLen ) { break; }
+        }
+
+        // match
+        let mOffset = iBuf[iPos+0] | (iBuf[iPos+1] << 8);
+        if ( mOffset === 0 || mOffset > oPos ) { return; }
+        iPos += 2;
+
+        // length of match
+        clen = (token & 0x0F) + 4;
+        if ( clen === 19 ) {
+            let l;
+            for (;;) {
+                l = iBuf[iPos++];
+                if ( l !== 255 ) { break; }
+                clen += 255;
+            }
+            clen += l;
+        }
+
+        // copy match
+        let mPos = oPos - mOffset;
+        let end = oPos + clen;
+        while ( oPos < end ) {
+            oBuf[oPos++] = oBuf[mPos++];
+        }
+    }
+
+    return oBuf;
+};
+
+/******************************************************************************/
+
+context.LZ4BlockJS = function() {
+    this.hashTable = undefined;
+    this.outputBuffer = undefined;
+};
+
+context.LZ4BlockJS.prototype = {
+    flavor: 'js',
+    init: function() {
+        return Promise.resolve(true);
+    },
+
+    reset: function() {
+        this.hashTable = undefined;
+        this.outputBuffer = undefined;
+    },
+
+    bytesInUse: function() {
+        let bytesInUse = 0;
+        if ( this.hashTable !== undefined ) {
+            bytesInUse += this.hashTable.byteLength;
+        }
+        if ( this.outputBuffer !== undefined ) {
+            bytesInUse += this.outputBuffer.byteLength;
+        }
+        return bytesInUse;
+    },
+
+    encodeBlock: function(input, outputOffset) {
+        if ( input instanceof ArrayBuffer ) {
+            input = new Uint8Array(input);
+        } else if ( input instanceof Uint8Array === false ) {
+            throw new TypeError();
+        }
+        return encodeBlock(this, input, outputOffset);
+    },
+
+    decodeBlock: function(input, inputOffset, outputSize) {
+        if ( input instanceof ArrayBuffer ) {
+            input = new Uint8Array(input);
+        } else if ( input instanceof Uint8Array === false ) {
+            throw new TypeError();
+        }
+        return decodeBlock(this, input, inputOffset, outputSize);
+    }
+};
+
+/******************************************************************************/
+
+})(this || self);                       // <<<< End of private namespace
+
+/******************************************************************************/

src/lib/lz4/lz4-block-codec-wasm.js

@@ -0,0 +1,195 @@
+/*******************************************************************************
+
+    lz4-block-codec-wasm.js
+        A javascript wrapper around a WebAssembly implementation of
+        LZ4 block format codec.
+    Copyright (C) 2018 Raymond Hill
+
+    BSD-2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are
+    met:
+
+    1. Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    2. Redistributions in binary form must reproduce the above
+    copyright notice, this list of conditions and the following disclaimer
+    in the documentation and/or other materials provided with the
+    distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+    OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+    Home: https://github.com/gorhill/lz4-wasm
+
+    I used the same license as the one picked by creator of LZ4 out of respect
+    for his creation, see https://lz4.github.io/lz4/
+
+*/
+
+/* global WebAssembly */
+
+'use strict';
+
+/******************************************************************************/
+
+(function(context) {                    // >>>> Start of private namespace
+
+/******************************************************************************/
+
+const wd = (function() {
+    let url = document.currentScript.src;
+    let match = /[^\/]+$/.exec(url);
+    return match !== null ?
+        url.slice(0, match.index) :
+        '';
+})();
+
+const growMemoryTo = function(wasmInstance, byteLength) {
+    let lz4api = wasmInstance.exports;
+    let neededByteLength = lz4api.getLinearMemoryOffset() + byteLength;
+    let pageCountBefore = lz4api.memory.buffer.byteLength >>> 16;
+    let pageCountAfter = (neededByteLength + 65535) >>> 16;
+    if ( pageCountAfter > pageCountBefore ) {
+        lz4api.memory.grow(pageCountAfter - pageCountBefore);
+    }
+    return lz4api.memory.buffer;
+};
+
+const encodeBlock = function(wasmInstance, inputArray, outputOffset) {
+    let lz4api = wasmInstance.exports;
+    let mem0 = lz4api.getLinearMemoryOffset();
+    let hashTableSize = 65536 * 4;
+    let inputSize = inputArray.byteLength;
+    if ( inputSize >= 0x7E000000 ) { throw new RangeError(); }
+    let memSize =
+        hashTableSize +
+        inputSize +
+        outputOffset + lz4api.lz4BlockEncodeBound(inputSize);
+    let memBuffer = growMemoryTo(wasmInstance, memSize);
+    let hashTable = new Int32Array(memBuffer, mem0, 65536);
+    hashTable.fill(-65536, 0, 65536);
+    let inputMem = new Uint8Array(memBuffer, mem0 + hashTableSize, inputSize);
+    inputMem.set(inputArray);
+    let outputSize = lz4api.lz4BlockEncode(
+        mem0 + hashTableSize,
+        inputSize,
+        mem0 + hashTableSize + inputSize + outputOffset
+    );
+    if ( outputSize === 0 ) { return; }
+    let outputArray = new Uint8Array(
+        memBuffer,
+        mem0 + hashTableSize + inputSize,
+        outputOffset + outputSize
+    );
+    return outputArray;
+};
+
+const decodeBlock = function(wasmInstance, inputArray, inputOffset, outputSize) {
+    let inputSize = inputArray.byteLength;
+    let lz4api = wasmInstance.exports;
+    let mem0 = lz4api.getLinearMemoryOffset();
+    let memSize = inputSize + outputSize;
+    let memBuffer = growMemoryTo(wasmInstance, memSize);
+    let inputArea = new Uint8Array(memBuffer, mem0, inputSize);
+    inputArea.set(inputArray);
+    outputSize = lz4api.lz4BlockDecode(
+        mem0 + inputOffset,
+        inputSize - inputOffset,
+        mem0 + inputSize
+    );
+    if ( outputSize === 0 ) { return; }
+    return new Uint8Array(memBuffer, mem0 + inputSize, outputSize);
+};
+
+/******************************************************************************/
+
+context.LZ4BlockWASM = function() {
+    this.lz4wasmInstance = undefined;
+};
+
+context.LZ4BlockWASM.prototype = {
+    flavor: 'wasm',
+
+    init: function() {
+        if (
+            typeof WebAssembly !== 'object' ||
+            typeof WebAssembly.instantiateStreaming !== 'function'
+        ) {
+            this.lz4wasmInstance = null;
+        }
+        if ( this.lz4wasmInstance === null ) {
+            return Promise.resolve(false);
+        }
+        if ( this.lz4wasmInstance instanceof WebAssembly.Instance ) {
+            return Promise.resolve(true);
+        }
+        if ( this.lz4wasmInstance === undefined ) {
+            this.lz4wasmInstance = fetch(
+                wd + 'lz4-block-codec.wasm',
+                { mode: 'same-origin' }
+            ).then(
+                WebAssembly.instantiateStreaming
+            ).then(result => {
+                this.lz4wasmInstance = result && result.instance || null;
+            }).catch(reason => {
+                this.lz4wasmInstance = null;
+                console.info(reason);
+            }).then(( ) =>
+                this.lz4wasmInstance !== null
+            );
+        }
+        return this.lz4wasmInstance;
+    },
+
+    reset: function() {
+        this.lz4wasmInstance = undefined;
+    },
+
+    bytesInUse: function() {
+        return this.lz4wasmInstance instanceof WebAssembly.Instance ?
+            this.lz4wasmInstance.exports.memory.buffer.byteLength :
+            0;
+    },
+
+    encodeBlock: function(input, outputOffset) {
+        if ( this.lz4wasmInstance instanceof WebAssembly.Instance === false ) {
+            throw new Error('LZ4BlockWASM: not initialized');
+        }
+        if ( input instanceof ArrayBuffer ) {
+            input = new Uint8Array(input);
+        } else if ( input instanceof Uint8Array === false ) {
+            throw new TypeError();
+        }
+        return encodeBlock(this.lz4wasmInstance, input, outputOffset);
+    },
+
+    decodeBlock: function(input, inputOffset, outputSize) {
+        if ( this.lz4wasmInstance instanceof WebAssembly.Instance === false ) {
+            throw new Error('LZ4BlockWASM: not initialized');
+        }
+        if ( input instanceof ArrayBuffer ) {
+            input = new Uint8Array(input);
+        } else if ( input instanceof Uint8Array === false ) {
+            throw new TypeError();
+        }
+        return decodeBlock(this.lz4wasmInstance, input, inputOffset, outputSize);
+    }
+};
+
+/******************************************************************************/
+
+})(this || self);                       // <<<< End of private namespace
+
+/******************************************************************************/

src/lib/lz4/lz4-block-codec.wat

@@ -0,0 +1,745 @@
+;;
+;; lz4-block-codec.wat: a WebAssembly implementation of LZ4 block format codec
+;; Copyright (C) 2018 Raymond Hill
+;;
+;; BSD-2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
+;;
+;; Redistribution and use in source and binary forms, with or without
+;; modification, are permitted provided that the following conditions are
+;; met:
+;; 
+;;   1. Redistributions of source code must retain the above copyright
+;; notice, this list of conditions and the following disclaimer.
+;; 
+;;   2. Redistributions in binary form must reproduce the above
+;; copyright notice, this list of conditions and the following disclaimer
+;; in the documentation and/or other materials provided with the
+;; distribution.
+;; 
+;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+;; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+;; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+;; A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+;; OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+;; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+;; LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+;; DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+;; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+;; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+;; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+;;
+;; Home: https://github.com/gorhill/lz4-wasm
+;;
+;; I used the same license as the one picked by creator of LZ4 out of respect
+;; for his creation, see https://lz4.github.io/lz4/
+;;
+
+(module
+;;
+;; module start
+;;
+
+;; (func $log (import "imports" "log") (param i32 i32 i32))
+
+(memory (export "memory") 1)
+
+;;
+;; Public functions
+;;
+
+;;
+;; Return an offset to the first byte of usable linear memory.
+;; Might be useful in the future to reserve memory space for whatever purpose,
+;; like config variables, etc.
+;;
+(func $getLinearMemoryOffset (export "getLinearMemoryOffset") 
+    (result i32)
+    i32.const 0
+)
+
+;;
+;; unsigned int lz4BlockEncodeBound()
+;;
+;; Return the maximum size of the output buffer holding the compressed data.
+;;
+;; Reference implementation:
+;; https://github.com/lz4/lz4/blob/dev/lib/lz4.h#L156
+;;
+(func (export "lz4BlockEncodeBound")
+    (param $ilen i32)
+    (result i32)
+    get_local $ilen
+    i32.const 0x7E000000
+    i32.gt_u
+    if
+        i32.const 0
+        return
+    end
+    get_local $ilen
+    get_local $ilen
+    i32.const 255
+    i32.div_u
+    i32.add
+    i32.const 16
+    i32.add
+)
+
+;;
+;; unsigned int lz4BlockEncode(
+;;     unsigned int inPtr,
+;;     unsigned int ilen,
+;;     unsigned int outPtr
+;; )
+;;
+;; https://github.com/lz4/lz4/blob/dev/lib/lz4.c#L651
+;;
+;; The implementation below is modified from the reference one.
+;; 
+;; - There is no skip adjustement for repeated failure to find a match.
+;; 
+;; - All configurable values are hard-coded to match the generic version
+;;   of the compressor.
+;;
+;; Note the size of the input block is NOT encoded in the output buffer, it
+;; is for the caller to figure how they will save that information on
+;; their side. At this point it is probably a trivial amount of work to
+;; implement the LZ4 frame format, which encode the content size, but this
+;; is for another day.
+;;
+(func $lz4BlockEncode (export "lz4BlockEncode")
+    (param $inPtr i32)                  ;; pointer to start of input buffer
+    (param $ilen i32)                   ;; size of input buffer
+    (param $outPtr i32)                 ;; pointer to start of output buffer
+    (result i32)
+    (local $hashPtrBeg i32)             ;; start of hash buffer
+    (local $hashPtr i32)                ;; current hash entry
+    (local $anchorPtr i32)              ;; anchor position in input
+    (local $inPtrEnd1 i32)              ;; point in input at which match-finding must cease
+    (local $inPtrEnd2 i32)              ;; point in input at which match-length finding must cease
+    (local $inPtrEnd i32)               ;; point to end of input
+    (local $outPtrBeg i32)              ;; start of output buffer
+    (local $refPtr i32)                 ;; start of match in input
+    (local $seq32 i32)                  ;; 4-byte value from current input position
+    (local $llen i32)                   ;; length of found literals
+    (local $moffset i32)                ;; offset to found match from current input position
+    (local $mlen i32)                   ;; length of found match
+    get_local $ilen                     ;; empty input = empty output
+    i32.const 0x7E000000                ;; max input size: 0x7E000000
+    i32.gt_u
+    if
+        i32.const 0
+        return
+    end
+    get_local $ilen                     ;; "blocks < 13 bytes cannot be compressed"
+    i32.const 13
+    i32.lt_u
+    if
+        i32.const 0
+        return
+    end
+    call $getLinearMemoryOffset         ;; hash table is at start of usable memory
+    set_local $hashPtrBeg
+    get_local $inPtr
+    tee_local $anchorPtr
+    get_local $ilen
+    i32.add
+    tee_local $inPtrEnd
+    i32.const -5                        ;; "The last 5 bytes are always literals."
+    i32.add
+    tee_local $inPtrEnd2
+    i32.const -7                        ;; "The last match must start at least 12 bytes before end of block"
+    i32.add
+    set_local $inPtrEnd1
+    get_local $outPtr
+    set_local $outPtrBeg
+    ;;
+    ;; sequence processing loop
+    ;;
+    block $noMoreSequence loop $nextSequence
+        get_local $inPtr
+        get_local $inPtrEnd1
+        i32.ge_u                        ;; 5 or less bytes left?
+        br_if $noMoreSequence
+        get_local $inPtr                ;; first sequence of 3 bytes before match-finding loop
+        i32.load8_u
+        i32.const 8
+        i32.shl
+        get_local $inPtr
+        i32.load8_u offset=1
+        i32.const 16
+        i32.shl
+        i32.or
+        get_local $inPtr
+        i32.load8_u offset=2
+        i32.const 24
+        i32.shl
+        i32.or
+        set_local $seq32
+        ;;
+        ;; match-finding loop
+        ;;
+        loop $findMatch block $noMatchFound
+            get_local $inPtr
+            get_local $inPtrEnd2
+            i32.gt_u                    ;; less than 12 bytes left?
+            br_if $noMoreSequence
+            get_local $seq32            ;; update last byte of current sequence
+            i32.const 8
+            i32.shr_u
+            get_local $inPtr
+            i32.load8_u offset=3
+            i32.const 24
+            i32.shl
+            i32.or
+            tee_local $seq32
+            i32.const 0x9E3779B1        ;; compute 16-bit hash
+            i32.mul
+            i32.const 16
+            i32.shr_u                   ;; hash value is at top of stack
+            i32.const 2                 ;; lookup refPtr at hash entry
+            i32.shl
+            get_local $hashPtrBeg
+            i32.add
+            tee_local $hashPtr
+            i32.load
+            set_local $refPtr
+            get_local $hashPtr          ;; update hash entry with inPtr
+            get_local $inPtr
+            i32.store
+            get_local $inPtr
+            get_local $refPtr
+            i32.sub
+            tee_local $moffset          ;; remember match offset, we will need it in case of match
+            i32.const 0xFFFF
+            i32.gt_s                    ;; match offset > 65535 = unusable match
+            br_if $noMatchFound
+            ;;
+            ;; confirm match: different sequences can yield same hash
+            ;; compare-branch each byte to potentially save memory read ops
+            ;;
+            get_local $seq32            ;; byte 0
+            i32.const 0xFF
+            i32.and
+            get_local $refPtr
+            i32.load8_u
+            i32.ne                      ;; refPtr[0] !== inPtr[0]
+            br_if $noMatchFound
+            get_local $seq32            ;; byte 1
+            i32.const 8
+            i32.shr_u
+            i32.const 0xFF
+            i32.and
+            get_local $refPtr
+            i32.load8_u offset=1
+            i32.ne
+            br_if $noMatchFound         ;; refPtr[1] !== inPtr[1]
+            get_local $seq32            ;; byte 2
+            i32.const 16
+            i32.shr_u
+            i32.const 0xFF
+            i32.and
+            get_local $refPtr
+            i32.load8_u offset=2
+            i32.ne                      ;; refPtr[2] !== inPtr[2]
+            br_if $noMatchFound
+            get_local $seq32            ;; byte 3
+            i32.const 24
+            i32.shr_u
+            i32.const 0xFF
+            i32.and
+            get_local $refPtr
+            i32.load8_u offset=3
+            i32.ne                      ;; refPtr[3] !== inPtr[3]
+            br_if $noMatchFound
+            ;;
+            ;; a valid match has been found at this point
+            ;;
+            get_local $inPtr            ;; compute length of literals
+            get_local $anchorPtr
+            i32.sub
+            set_local $llen
+            get_local $inPtr            ;; find match length
+            i32.const 4                 ;; skip over confirmed 4-byte match
+            i32.add
+            set_local $inPtr
+            get_local $refPtr
+            i32.const 4
+            i32.add
+            tee_local $mlen             ;; remember refPtr to later compute match length
+            set_local $refPtr
+            block $endOfMatch loop      ;; scan input buffer until match ends
+                get_local $inPtr
+                get_local $inPtrEnd2
+                i32.ge_u
+                br_if $endOfMatch
+                get_local $inPtr
+                i32.load8_u
+                get_local $refPtr
+                i32.load8_u
+                i32.ne
+                br_if $endOfMatch
+                get_local $inPtr
+                i32.const 1
+                i32.add
+                set_local $inPtr
+                get_local $refPtr
+                i32.const 1
+                i32.add
+                set_local $refPtr
+                br 0
+            end end $endOfMatch
+            ;; encode token
+            get_local $outPtr           ;; output token
+            get_local $llen
+            get_local $refPtr
+            get_local $mlen
+            i32.sub
+            tee_local $mlen
+            call $writeToken
+            get_local $outPtr
+            i32.const 1
+            i32.add
+            set_local $outPtr
+            get_local $llen             ;; encode/write length of literals if needed
+            i32.const 15
+            i32.ge_s
+            if
+                get_local $outPtr
+                get_local $llen
+                call $writeLength
+                set_local $outPtr
+            end
+            ;; copy literals
+            get_local $outPtr
+            get_local $anchorPtr
+            get_local $llen
+            call $copy
+            get_local $outPtr
+            get_local $llen
+            i32.add
+            set_local $outPtr
+            ;; encode match offset
+            get_local $outPtr
+            get_local $moffset
+            i32.store8
+            get_local $outPtr
+            get_local $moffset
+            i32.const 8
+            i32.shr_u
+            i32.store8 offset=1
+            get_local $outPtr
+            i32.const 2
+            i32.add
+            set_local $outPtr
+            get_local $mlen             ;; encode/write length of match if needed
+            i32.const 15
+            i32.ge_s
+            if
+                get_local $outPtr
+                get_local $mlen
+                call $writeLength
+                set_local $outPtr
+            end
+            get_local $inPtr            ;; advance anchor to current position
+            set_local $anchorPtr
+            br $nextSequence
+        end $noMatchFound
+        get_local $inPtr                ;; no match found: advance to next byte
+        i32.const 1
+        i32.add
+        set_local $inPtr
+        br $findMatch end               ;; match offset > 65535 = unusable match
+    end end $noMoreSequence
+    ;;
+    ;; generate last (match-less) sequence if compression succeeded
+    ;;
+    get_local $outPtr
+    get_local $outPtrBeg
+    i32.eq
+    if
+        i32.const 0
+        return
+    end
+    get_local $outPtr
+    get_local $inPtrEnd
+    get_local $anchorPtr
+    i32.sub
+    tee_local $llen
+    i32.const 0
+    call $writeToken
+    get_local $outPtr
+    i32.const 1
+    i32.add
+    set_local $outPtr
+    get_local $llen
+    i32.const 15
+    i32.ge_u
+    if
+        get_local $outPtr
+        get_local $llen
+        call $writeLength
+        set_local $outPtr
+    end
+    get_local $outPtr
+    get_local $anchorPtr
+    get_local $llen
+    call $copy
+    get_local $outPtr                   ;; return number of written bytes
+    get_local $llen
+    i32.add
+    get_local $outPtrBeg
+    i32.sub
+)
+
+;;
+;; unsigned int lz4BlockDecode(
+;;     unsigned int inPtr,
+;;     unsigned int ilen
+;;     unsigned int outPtr
+;; )
+;;
+;; Reference:
+;; https://github.com/lz4/lz4/blob/dev/doc/lz4_Block_format.md
+;;
+(func (export "lz4BlockDecode")
+    (param $inPtr0 i32)                 ;; start of input buffer
+    (param $ilen i32)                   ;; length of input buffer
+    (param $outPtr0 i32)                ;; start of output buffer
+    (result i32)
+    (local $inPtr i32)                  ;; current position in input buffer
+    (local $inPtrEnd i32)               ;; end of input buffer
+    (local $outPtr i32)                 ;; current position in output buffer
+    (local $matchPtr i32)               ;; position of current match
+    (local $token i32)                  ;; sequence token
+    (local $clen i32)                   ;; number of bytes to copy 
+    (local $_ i32)                      ;; general purpose variable
+    get_local $ilen                     ;; if ( ilen == 0 ) { return 0; }
+    i32.eqz
+    if
+        i32.const 0
+        return
+    end
+    get_local $inPtr0
+    tee_local $inPtr                    ;; current position in input buffer
+    get_local $ilen
+    i32.add
+    set_local $inPtrEnd
+    get_local $outPtr0                  ;; start of output buffer
+    set_local $outPtr                   ;; current position in output buffer
+    block $noMoreSequence loop          ;; iterate through all sequences
+        get_local $inPtr
+        get_local $inPtrEnd
+        i32.ge_u
+        br_if $noMoreSequence           ;; break when nothing left to read in input buffer
+        get_local $inPtr                ;; read token -- consume one byte
+        i32.load8_u
+        get_local $inPtr
+        i32.const 1
+        i32.add
+        set_local $inPtr
+        tee_local $token                ;; extract length of literals from token
+        i32.const 4
+        i32.shr_u
+        tee_local $clen                 ;; consume extra length bytes if present
+        i32.eqz
+        if else
+            get_local $clen
+            i32.const 15
+            i32.eq
+            if loop
+                get_local $inPtr
+                i32.load8_u
+                get_local $inPtr
+                i32.const 1
+                i32.add
+                set_local $inPtr
+                tee_local $_
+                get_local $clen
+                i32.add
+                set_local $clen
+                get_local $_
+                i32.const 255
+                i32.eq
+                br_if 0
+            end end
+            get_local $outPtr           ;; copy literals to ouput buffer
+            get_local $inPtr
+            get_local $clen
+            call $copy
+            get_local $outPtr           ;; advance output buffer pointer past copy
+            get_local $clen
+            i32.add
+            set_local $outPtr
+            get_local $clen             ;; advance input buffer pointer past literals
+            get_local $inPtr
+            i32.add
+            tee_local $inPtr
+            get_local $inPtrEnd         ;; exit if this is the last sequence
+            i32.eq
+            br_if $noMoreSequence
+        end
+        get_local $outPtr               ;; read match offset
+        get_local $inPtr
+        i32.load8_u
+        get_local $inPtr
+        i32.load8_u offset=1
+        i32.const 8
+        i32.shl
+        i32.or
+        i32.sub
+        tee_local $matchPtr
+        get_local $outPtr               ;; match position can't be outside input buffer bounds
+        i32.eq
+        br_if $noMoreSequence
+        get_local $matchPtr
+        get_local $inPtrEnd
+        i32.lt_u
+        br_if $noMoreSequence
+        get_local $inPtr                ;; advance input pointer past match offset bytes
+        i32.const 2
+        i32.add
+        set_local $inPtr
+        get_local $token                ;; extract length of match from token
+        i32.const 15
+        i32.and
+        i32.const 4
+        i32.add
+        tee_local $clen
+        i32.const 19                    ;; consume extra length bytes if present
+        i32.eq
+        if loop
+            get_local $inPtr
+            i32.load8_u
+            get_local $inPtr
+            i32.const 1
+            i32.add
+            set_local $inPtr
+            tee_local $_
+            get_local $clen
+            i32.add
+            set_local $clen
+            get_local $_
+            i32.const 255
+            i32.eq
+            br_if 0
+        end end
+        get_local $outPtr               ;; copy match to ouput buffer
+        get_local $matchPtr
+        get_local $clen
+        call $copy
+        get_local $clen                 ;; advance output buffer pointer past copy
+        get_local $outPtr
+        i32.add
+        set_local $outPtr
+        br 0
+    end end $noMoreSequence
+    get_local $outPtr                   ;; return number of written bytes
+    get_local $outPtr0
+    i32.sub
+)
+
+;;
+;; Private functions
+;;
+
+;;
+;; Encode a sequence token
+;;
+;; Reference documentation:
+;; https://github.com/lz4/lz4/blob/dev/doc/lz4_Block_format.md
+;;
+(func $writeToken
+    (param $outPtr i32)
+    (param $llen i32)
+    (param $mlen i32)
+    get_local $outPtr
+    get_local $llen
+    i32.const 15
+    get_local $llen
+    i32.const 15
+    i32.lt_u
+    select
+    i32.const 4
+    i32.shl
+    get_local $mlen
+    i32.const 15
+    get_local $mlen
+    i32.const 15
+    i32.lt_u
+    select
+    i32.or
+    i32.store8
+)
+
+;;
+;; Encode and output length bytes. The return value is the pointer following
+;; the last byte written.
+;;
+;; Reference documentation:
+;; https://github.com/lz4/lz4/blob/dev/doc/lz4_Block_format.md
+;;
+(func $writeLength
+    (param $outPtr i32)
+    (param $len i32)
+    (result i32)
+    get_local $len
+    i32.const 15
+    i32.sub
+    set_local $len
+    loop
+        get_local $outPtr
+        get_local $len
+        i32.const 255
+        get_local $len
+        i32.const 255
+        i32.lt_u
+        select
+        i32.store8
+        get_local $outPtr
+        i32.const 1
+        i32.add
+        set_local $outPtr
+        get_local $len
+        i32.const 255
+        i32.sub
+        tee_local $len
+        i32.const 0
+        i32.ge_s
+        br_if 0
+    end
+    get_local $outPtr
+)
+
+;;
+;; Copy n bytes from source to destination.
+;;
+;; It is overlap-safe only from left-to-right -- which is only what is
+;; required in the current module.
+;;
+(func $copy
+    (param $dst i32)
+    (param $src i32)
+    (param $len i32)
+    block $lessThan8 loop
+        get_local $len
+        i32.const 8
+        i32.lt_u
+        br_if $lessThan8
+        get_local $dst
+        get_local $src
+        i32.load8_u
+        i32.store8
+        get_local $dst
+        get_local $src
+        i32.load8_u offset=1
+        i32.store8 offset=1
+        get_local $dst
+        get_local $src
+        i32.load8_u offset=2
+        i32.store8 offset=2
+        get_local $dst
+        get_local $src
+        i32.load8_u offset=3
+        i32.store8 offset=3
+        get_local $dst
+        get_local $src
+        i32.load8_u offset=4
+        i32.store8 offset=4
+        get_local $dst
+        get_local $src
+        i32.load8_u offset=5
+        i32.store8 offset=5
+        get_local $dst
+        get_local $src
+        i32.load8_u offset=6
+        i32.store8 offset=6
+        get_local $dst
+        get_local $src
+        i32.load8_u offset=7
+        i32.store8 offset=7
+        get_local $dst
+        i32.const 8
+        i32.add
+        set_local $dst
+        get_local $src
+        i32.const 8
+        i32.add
+        set_local $src
+        get_local $len
+        i32.const -8
+        i32.add
+        set_local $len
+        br 0
+    end end $lessThan8
+    get_local $len
+    i32.const 4
+    i32.ge_u
+    if
+        get_local $dst
+        get_local $src
+        i32.load8_u
+        i32.store8
+        get_local $dst
+        get_local $src
+        i32.load8_u offset=1
+        i32.store8 offset=1
+        get_local $dst
+        get_local $src
+        i32.load8_u offset=2
+        i32.store8 offset=2
+        get_local $dst
+        get_local $src
+        i32.load8_u offset=3
+        i32.store8 offset=3
+        get_local $dst
+        i32.const 4
+        i32.add
+        set_local $dst
+        get_local $src
+        i32.const 4
+        i32.add
+        set_local $src
+        get_local $len
+        i32.const -4
+        i32.add
+        set_local $len
+    end
+    get_local $len
+    i32.const 2
+    i32.ge_u
+    if
+        get_local $dst
+        get_local $src
+        i32.load8_u
+        i32.store8
+        get_local $dst
+        get_local $src
+        i32.load8_u offset=1
+        i32.store8 offset=1
+        get_local $dst
+        i32.const 2
+        i32.add
+        set_local $dst
+        get_local $src
+        i32.const 2
+        i32.add
+        set_local $src
+        get_local $len
+        i32.const -2
+        i32.add
+        set_local $len
+    end
+    get_local $len
+    i32.eqz
+    if else
+        get_local $dst
+        get_local $src
+        i32.load8_u
+        i32.store8
+    end
+)
+
+;;
+;; module end
+;;
+)

src/lib/publicsuffixlist.js

@@ -1,343 +0,0 @@
-/*******************************************************************************
-
-    publicsuffixlist.js - an efficient javascript implementation to deal with
-    Mozilla Foundation's Public Suffix List <http://publicsuffix.org/list/>
-    Copyright (C) 2013  Raymond Hill
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see {http://www.gnu.org/licenses/}.
-
-*/
-
-/*! Home: https://github.com/gorhill/publicsuffixlist.js */
-
-'use strict';
-
-/*
-    This code is mostly dumb: I consider this to be lower-level code, thus
-    in order to ensure efficiency, the caller is responsible for sanitizing
-    the inputs.
-*/
-
-/******************************************************************************/
-
-// A single instance of PublicSuffixList is enough.
-
-;(function(root) {
-
-/******************************************************************************/
-
-var exceptions = new Map();
-var rules = new Map();
-
-// This value dictate how the search will be performed:
-//    < this.cutoffLength = indexOf()
-//   >= this.cutoffLength = binary search
-var cutoffLength = 256;
-var mustPunycode = /[^\w.*-]/;
-
-/******************************************************************************/
-
-// In the context of this code, a domain is defined as:
-//   "{label}.{public suffix}".
-// A single standalone label is a public suffix as per
-// http://publicsuffix.org/list/:
-//   "If no rules match, the prevailing rule is '*' "
-// This means 'localhost' is not deemed a domain by this
-// code, since according to the definition above, it would be
-// evaluated as a public suffix. The caller is therefore responsible to
-// decide how to further interpret such public suffix.
-//
-// `hostname` must be a valid ascii-based hostname.
-
-function getDomain(hostname) {
-    // A hostname starting with a dot is not a valid hostname.
-    if ( !hostname || hostname.charAt(0) === '.' ) {
-        return '';
-    }
-    hostname = hostname.toLowerCase();
-    var suffix = getPublicSuffix(hostname);
-    if ( suffix === hostname ) {
-        return '';
-    }
-    var pos = hostname.lastIndexOf('.', hostname.lastIndexOf('.', hostname.length - suffix.length) - 1);
-    if ( pos <= 0 ) {
-        return hostname;
-    }
-    return hostname.slice(pos + 1);
-}
-
-/******************************************************************************/
-
-// Return longest public suffix.
-//
-// `hostname` must be a valid ascii-based string which respect hostname naming.
-
-function getPublicSuffix(hostname) {
-    if ( !hostname ) {
-        return '';
-    }
-    // Since we slice down the hostname with each pass, the first match
-    // is the longest, so no need to find all the matching rules.
-    while ( true ) {
-        let pos = hostname.indexOf('.');
-        if ( pos < 0 ) {
-            return hostname;
-        }
-        if ( search(exceptions, hostname) ) {
-            return hostname.slice(pos + 1);
-        }
-        if ( search(rules, hostname) ) {
-            return hostname;
-        }
-        if ( search(rules, '*' + hostname.slice(pos)) ) {
-            return hostname;
-        }
-        hostname = hostname.slice(pos + 1);
-    }
-    // unreachable
-}
-
-/******************************************************************************/
-
-// Look up a specific hostname.
-
-function search(store, hostname) {
-    // Extract TLD
-    let tld, remainder;
-    let pos = hostname.lastIndexOf('.');
-    if ( pos === -1 ) {
-        tld = hostname;
-        remainder = hostname;
-    } else {
-        tld = hostname.slice(pos + 1);
-        remainder = hostname.slice(0, pos);
-    }
-    let substore = store.get(tld);
-    if ( substore === undefined ) {
-        return false;
-    }
-    // If substore is a string, use indexOf()
-    if ( typeof substore === 'string' ) {
-        return substore.indexOf(' ' + remainder + ' ') >= 0;
-    }
-    // It is an array: use binary search.
-    let l = remainder.length;
-    if ( l >= substore.length ) {
-        return false;
-    }
-    let haystack = substore[l];
-    if ( haystack === null ) {
-        return false;
-    }
-    let left = 0;
-    let right = Math.floor(haystack.length / l + 0.5);
-    while ( left < right ) {
-        let i = left + right >> 1;
-        let needle = haystack.substr(l*i, l);
-        if ( remainder < needle ) {
-            right = i;
-        } else if ( remainder > needle ) {
-            left = i + 1;
-        } else {
-            return true;
-        }
-    }
-    return false;
-}
-
-/******************************************************************************/
-
-// Parse and set a UTF-8 text-based suffix list. Format is same as found at:
-// http://publicsuffix.org/list/
-//
-// `toAscii` is a converter from unicode to punycode. Required since the
-// Public Suffix List contains unicode characters.
-// Suggestion: use <https://github.com/bestiejs/punycode.js> it's quite good.
-
-function parse(text, toAscii) {
-    exceptions = new Map();
-    rules = new Map();
-
-    let lineBeg = 0;
-    let textEnd = text.length;
-
-    while ( lineBeg < textEnd ) {
-        let lineEnd = text.indexOf('\n', lineBeg);
-        if ( lineEnd < 0 ) {
-            lineEnd = text.indexOf('\r', lineBeg);
-            if ( lineEnd < 0 ) {
-                lineEnd = textEnd;
-            }
-        }
-        let line = text.slice(lineBeg, lineEnd).trim();
-        lineBeg = lineEnd + 1;
-
-        if ( line.length === 0 ) {
-            continue;
-        }
-
-        // Ignore comments
-        let pos = line.indexOf('//');
-        if ( pos !== -1 ) {
-            line = line.slice(0, pos);
-        }
-
-        // Ignore surrounding whitespaces
-        line = line.trim();
-        if ( line.length === 0 ) {
-            continue;
-        }
-
-        // Is this an exception rule?
-        let store;
-        if ( line.charAt(0) === '!' ) {
-            store = exceptions;
-            line = line.slice(1);
-        } else {
-            store = rules;
-        }
-
-        if ( mustPunycode.test(line) ) {
-            line = toAscii(line);
-        }
-
-        // http://publicsuffix.org/list/:
-        // "... all rules must be canonicalized in the normal way
-        // for hostnames - lower-case, Punycode ..."
-        line = line.toLowerCase();
-
-        // Extract TLD
-        let tld;
-        pos = line.lastIndexOf('.');
-        if ( pos === -1 ) {
-            tld = line;
-        } else {
-            tld = line.slice(pos + 1);
-            line = line.slice(0, pos);
-        }
-
-        // Store suffix using tld as key
-        let substore = store.get(tld);
-        if ( substore === undefined ) {
-            store.set(tld, substore = []);
-        }
-        if ( line ) {
-            substore.push(line);
-        }
-    }
-
-    crystallize(exceptions);
-    crystallize(rules);
-
-    window.dispatchEvent(new CustomEvent('publicSuffixList'));
-}
-
-/******************************************************************************/
-
-// Cristallize the storage of suffixes using optimal internal representation
-// for future look up.
-
-function crystallize(store) {
-    for ( let entry of store ) {
-        let tld = entry[0];
-        let suffixes = entry[1];
-
-        // No suffix
-        if ( suffixes.length === 0 ) {
-            store.set(tld, '');
-            continue;
-        }
-
-        // Concatenated list of suffixes less than cutoff length:
-        //   Store as string, lookup using indexOf()
-        let s = suffixes.join(' ');
-        if ( s.length < cutoffLength ) {
-            store.set(tld, ' ' + s + ' ');
-            continue;
-        }
-
-        // Concatenated list of suffixes greater or equal to cutoff length
-        //   Store as array keyed on suffix length, lookup using binary search.
-        // I borrowed the idea to key on string length here:
-        //   http://ejohn.org/blog/dictionary-lookups-in-javascript/#comment-392072
-        let buckets = [];
-        for ( let suffix of suffixes ) {
-            let l = suffix.length;
-            if ( buckets.length <= l ) {
-                extendArray(buckets, l);
-            }
-            if ( buckets[l] === null ) {
-                buckets[l] = [];
-            }
-            buckets[l].push(suffix);
-        }
-        for ( let i = 0; i < buckets.length; i++ ) {
-            let bucket = buckets[i];
-            if ( bucket !== null ) {
-                buckets[i] = bucket.sort().join('');
-            }
-        }
-        store.set(tld, buckets);
-    }
-
-    return store;
-}
-
-let extendArray = function(aa, rb) {
-    for ( let i = aa.length; i <= rb; i++ ) {
-        aa.push(null);
-    }
-};
-
-/******************************************************************************/
-
-let selfieMagic = 3;
-
-let toSelfie = function() {
-    return {
-        magic: selfieMagic,
-        rules: Array.from(rules),
-        exceptions: Array.from(exceptions)
-    };
-};
-
-let fromSelfie = function(selfie) {
-    if ( selfie instanceof Object === false || selfie.magic !== selfieMagic ) {
-        return false;
-    }
-    rules = new Map(selfie.rules);
-    exceptions = new Map(selfie.exceptions);
-    window.dispatchEvent(new CustomEvent('publicSuffixList'));
-    return true;
-};
-
-/******************************************************************************/
-
-// Public API
-
-root = root || window;
-
-root.publicSuffixList = {
-    'version': '1.0',
-    'parse': parse,
-    'getDomain': getDomain,
-    'getPublicSuffix': getPublicSuffix,
-    'toSelfie': toSelfie,
-    'fromSelfie': fromSelfie
-};
-
-/******************************************************************************/
-
-})(this);
-

src/lib/publicsuffixlist/publicsuffixlist.js

@@ -0,0 +1,647 @@
+/*******************************************************************************
+
+    publicsuffixlist.js - an efficient javascript implementation to deal with
+    Mozilla Foundation's Public Suffix List <http://publicsuffix.org/list/>
+
+    Copyright (C) 2013-present Raymond Hill
+
+    License: pick the one which suits you:
+      GPL v3 see <https://www.gnu.org/licenses/gpl.html>
+      APL v2 see <http://www.apache.org/licenses/LICENSE-2.0>
+
+*/
+
+/*! Home: https://github.com/gorhill/publicsuffixlist.js -- GPLv3 APLv2 */
+
+/* jshint browser:true, esversion:6, laxbreak:true, undef:true, unused:true */
+/* globals WebAssembly, console, exports:true, module */
+
+/*******************************************************************************
+
+    Reference:
+    https://publicsuffix.org/list/
+
+    Excerpt:
+
+    > Algorithm
+    > 
+    > 1. Match domain against all rules and take note of the matching ones.
+    > 2. If no rules match, the prevailing rule is "*".
+    > 3. If more than one rule matches, the prevailing rule is the one which
+         is an exception rule.
+    > 4. If there is no matching exception rule, the prevailing rule is the
+         one with the most labels.
+    > 5. If the prevailing rule is a exception rule, modify it by removing
+         the leftmost label.
+    > 6. The public suffix is the set of labels from the domain which match
+         the labels of the prevailing rule, using the matching algorithm above.
+    > 7. The registered or registrable domain is the public suffix plus one
+         additional label.
+
+*/
+
+/******************************************************************************/
+
+(function(context) {
+// >>>>>>>> start of anonymous namespace
+
+'use strict';
+
+/*******************************************************************************
+
+    Tree encoding in array buffer:
+    
+     Node:
+     +  u8: length of char data
+     +  u8: flags => bit 0: is_publicsuffix, bit 1: is_exception
+     + u16: length of array of children
+     + u32: char data or offset to char data
+     + u32: offset to array of children
+     = 12 bytes
+
+    More bits in flags could be used; for example:
+    - to distinguish private suffixes
+
+*/
+
+                                    // i32 /  i8
+const HOSTNAME_SLOT       = 0;      // jshint ignore:line
+const LABEL_INDICES_SLOT  = 256;    //  -- / 256
+const RULES_PTR_SLOT      = 100;    // 100 / 400
+const CHARDATA_PTR_SLOT   = 101;    // 101 / 404
+const EMPTY_STRING        = '';
+const SELFIE_MAGIC        = 2;
+
+let wasmMemory;
+let pslBuffer32;
+let pslBuffer8;
+let pslByteLength = 0;
+let hostnameArg = EMPTY_STRING;
+
+/******************************************************************************/
+
+const fireChangedEvent = function() {
+    if (
+        window instanceof Object &&
+        window.dispatchEvent instanceof Function &&
+        window.CustomEvent instanceof Function
+    ) {
+        window.dispatchEvent(new CustomEvent('publicSuffixListChanged'));
+    }
+};
+
+/******************************************************************************/
+
+const allocateBuffers = function(byteLength) {
+    pslByteLength = byteLength + 3 & ~3;
+    if (
+        pslBuffer32 !== undefined &&
+        pslBuffer32.byteLength >= pslByteLength
+    ) {
+        return;
+    }
+    if ( wasmMemory !== undefined ) {
+        const newPageCount = pslByteLength + 0xFFFF >>> 16;
+        const curPageCount = wasmMemory.buffer.byteLength >>> 16;
+        const delta = newPageCount - curPageCount;
+        if ( delta > 0 ) {
+            wasmMemory.grow(delta);
+            pslBuffer32 = new Uint32Array(wasmMemory.buffer);
+            pslBuffer8 = new Uint8Array(wasmMemory.buffer);
+        }
+    } else {
+        pslBuffer8 = new Uint8Array(pslByteLength);
+        pslBuffer32 = new Uint32Array(pslBuffer8.buffer);
+    }
+    hostnameArg = '';
+    pslBuffer8[LABEL_INDICES_SLOT] = 0;
+};
+
+/******************************************************************************/
+
+// Parse and set a UTF-8 text-based suffix list. Format is same as found at:
+// http://publicsuffix.org/list/
+//
+// `toAscii` is a converter from unicode to punycode. Required since the
+// Public Suffix List contains unicode characters.
+// Suggestion: use <https://github.com/bestiejs/punycode.js>
+
+const parse = function(text, toAscii) {
+    // Use short property names for better minifying results
+    const rootRule = {
+        l: EMPTY_STRING,    // l => label
+        f: 0,               // f => flags
+        c: undefined        // c => children
+    };
+
+    // Tree building
+    {
+        const compareLabels = function(a, b) {
+            let n = a.length;
+            let d = n - b.length;
+            if ( d !== 0 ) { return d; }
+            for ( let i = 0; i < n; i++ ) {
+                d = a.charCodeAt(i) - b.charCodeAt(i);
+                if ( d !== 0 ) { return d; }
+            }
+            return 0;
+        };
+
+        const addToTree = function(rule, exception) {
+            let node = rootRule;
+            let end = rule.length;
+            while ( end > 0 ) {
+                const beg = rule.lastIndexOf('.', end - 1);
+                const label = rule.slice(beg + 1, end);
+                end = beg;
+
+                if ( Array.isArray(node.c) === false ) {
+                    const child = { l: label, f: 0, c: undefined };
+                    node.c = [ child ];
+                    node = child;
+                    continue;
+                }
+
+                let left = 0;
+                let right = node.c.length;
+                while ( left < right ) {
+                    const i = left + right >>> 1;
+                    const d = compareLabels(label, node.c[i].l);
+                    if ( d < 0 ) {
+                        right = i;
+                        if ( right === left ) {
+                            const child = {
+                                l: label,
+                                f: 0,
+                                c: undefined
+                            };
+                            node.c.splice(left, 0, child);
+                            node = child;
+                            break;
+                        }
+                        continue;
+                    }
+                    if ( d > 0 ) {
+                        left = i + 1;
+                        if ( left === right ) {
+                            const child = {
+                                l: label,
+                                f: 0,
+                                c: undefined
+                            };
+                            node.c.splice(right, 0, child);
+                            node = child;
+                            break;
+                        }
+                        continue;
+                    }
+                    /* d === 0 */
+                    node = node.c[i];
+                    break;
+                }
+            }
+            node.f |= 0b01;
+            if ( exception ) {
+                node.f |= 0b10;
+            }
+        };
+
+        // 2. If no rules match, the prevailing rule is "*".
+        addToTree('*', false);
+
+        const mustPunycode = /[^a-z0-9.-]/;
+        const textEnd = text.length;
+        let lineBeg = 0;
+
+        while ( lineBeg < textEnd ) {
+            let lineEnd = text.indexOf('\n', lineBeg);
+            if ( lineEnd === -1 ) {
+                lineEnd = text.indexOf('\r', lineBeg);
+                if ( lineEnd === -1 ) {
+                    lineEnd = textEnd;
+                }
+            }
+            let line = text.slice(lineBeg, lineEnd).trim();
+            lineBeg = lineEnd + 1;
+
+            // Ignore comments
+            const pos = line.indexOf('//');
+            if ( pos !== -1 ) {
+                line = line.slice(0, pos);
+            }
+
+            // Ignore surrounding whitespaces
+            line = line.trim();
+            if ( line.length === 0 ) { continue; }
+
+            const exception = line.charCodeAt(0) === 0x21 /* '!' */;
+            if ( exception ) {
+                line = line.slice(1);
+            }
+
+            if ( mustPunycode.test(line) ) {
+                line = toAscii(line.toLowerCase());
+            }
+
+            addToTree(line, exception);
+        }
+    }
+
+    {
+        const labelToOffsetMap = new Map();
+        const treeData = [];
+        const charData = [];
+
+        const allocate = function(n) {
+            const ibuf = treeData.length;
+            for ( let i = 0; i < n; i++ ) {
+                treeData.push(0);
+            }
+            return ibuf;
+        };
+
+        const storeNode = function(ibuf, node) {
+            const nChars = node.l.length;
+            const nChildren = node.c !== undefined
+                ? node.c.length
+                : 0;
+            treeData[ibuf+0] = nChildren << 16 | node.f << 8 | nChars;
+            // char data
+            if ( nChars <= 4 ) {
+                let v = 0;
+                if ( nChars > 0 ) {
+                    v |= node.l.charCodeAt(0);
+                    if ( nChars > 1 ) {
+                        v |= node.l.charCodeAt(1) << 8;
+                        if ( nChars > 2 ) {
+                            v |= node.l.charCodeAt(2) << 16;
+                            if ( nChars > 3 ) {
+                                v |= node.l.charCodeAt(3) << 24;
+                            }
+                        }
+                    }
+                }
+                treeData[ibuf+1] = v;
+            } else {
+                let offset = labelToOffsetMap.get(node.l);
+                if ( offset === undefined ) {
+                    offset = charData.length;
+                    for ( let i = 0; i < nChars; i++ ) {
+                        charData.push(node.l.charCodeAt(i));
+                    }
+                    labelToOffsetMap.set(node.l, offset);
+                }
+                treeData[ibuf+1] = offset;
+            }
+            // child nodes
+            if ( Array.isArray(node.c) === false ) {
+                treeData[ibuf+2] = 0;
+                return;
+            }
+            
+            const iarray = allocate(nChildren * 3);
+            treeData[ibuf+2] = iarray;
+            for ( let i = 0; i < nChildren; i++ ) {
+                storeNode(iarray + i * 3, node.c[i]);
+            }
+        };
+
+        // First 512 bytes are reserved for internal use
+        allocate(512 >> 2);
+
+        const iRootRule = allocate(3);
+        storeNode(iRootRule, rootRule);
+        treeData[RULES_PTR_SLOT] = iRootRule;
+
+        const iCharData = treeData.length << 2;
+        treeData[CHARDATA_PTR_SLOT] = iCharData;
+
+        const byteLength = (treeData.length << 2) + (charData.length + 3 & ~3);
+        allocateBuffers(byteLength);
+        pslBuffer32.set(treeData);
+        pslBuffer8.set(charData, treeData.length << 2);
+    }
+
+    fireChangedEvent();
+};
+
+/******************************************************************************/
+
+const setHostnameArg = function(hostname) {
+    const buf = pslBuffer8;
+    if ( hostname === hostnameArg ) { return buf[LABEL_INDICES_SLOT]; }
+    if ( hostname === null || hostname.length === 0 ) {
+        hostnameArg = '';
+        return (buf[LABEL_INDICES_SLOT] = 0);
+    }
+    hostname = hostname.toLowerCase();
+    hostnameArg = hostname;
+    let n = hostname.length;
+    if ( n > 255 ) { n = 255; }
+    buf[LABEL_INDICES_SLOT] = n;
+    let i = n;
+    let j = LABEL_INDICES_SLOT + 1;
+    while ( i-- ) {
+        const c = hostname.charCodeAt(i);
+        if ( c === 0x2E /* '.' */ ) {
+            buf[j+0] = i + 1;
+            buf[j+1] = i;
+            j += 2;
+        }
+        buf[i] = c;
+    }
+    buf[j] = 0;
+    return n;
+};
+
+/******************************************************************************/
+
+// Returns an offset to the start of the public suffix.
+//
+// WASM-able, because no information outside the buffer content is required.
+
+const getPublicSuffixPosJS = function() {
+    const buf8 = pslBuffer8;
+    const buf32 = pslBuffer32;
+    const iCharData = buf32[CHARDATA_PTR_SLOT];
+
+    let iNode = pslBuffer32[RULES_PTR_SLOT];
+    let cursorPos = -1;
+    let iLabel = LABEL_INDICES_SLOT;
+
+    // Label-lookup loop
+    for (;;) {
+        // Extract label indices
+        const labelBeg = buf8[iLabel+1];
+        const labelLen = buf8[iLabel+0] - labelBeg;
+        // Match-lookup loop: binary search
+        let r = buf32[iNode+0] >>> 16;
+        if ( r === 0 ) { break; }
+        const iCandidates = buf32[iNode+2];
+        let l = 0;
+        let iFound = 0;
+        while ( l < r ) {
+            const iCandidate = l + r >>> 1;
+            const iCandidateNode = iCandidates + iCandidate + (iCandidate << 1);
+            const candidateLen = buf32[iCandidateNode+0] & 0x000000FF;
+            let d = labelLen - candidateLen;
+            if ( d === 0 ) {
+                const iCandidateChar = candidateLen <= 4
+                    ? iCandidateNode + 1 << 2
+                    : iCharData + buf32[iCandidateNode+1];
+                for ( let i = 0; i < labelLen; i++ ) {
+                    d = buf8[labelBeg+i] - buf8[iCandidateChar+i];
+                    if ( d !== 0 ) { break; }
+                }
+            }
+            if ( d < 0 ) {
+                r = iCandidate;
+            } else if ( d > 0 ) {
+                l = iCandidate + 1;
+            } else /* if ( d === 0 ) */ {
+                iFound = iCandidateNode;
+                break;
+            }
+        }
+        // 2. If no rules match, the prevailing rule is "*".
+        if ( iFound === 0 ) {
+            if ( buf8[iCandidates + 1 << 2] !== 0x2A /* '*' */ ) { break; }
+            iFound = iCandidates;
+        }
+        iNode = iFound;
+        // 5. If the prevailing rule is a exception rule, modify it by
+        //    removing the leftmost label.
+        if ( (buf32[iNode+0] & 0x00000200) !== 0 ) {
+            if ( iLabel > LABEL_INDICES_SLOT ) {
+                return iLabel - 2;
+            }
+            break;
+        }
+        if ( (buf32[iNode+0] & 0x00000100) !== 0 ) {
+            cursorPos = iLabel;
+        }
+        if ( labelBeg === 0 ) { break; }
+        iLabel += 2;
+    }
+
+    return cursorPos;
+};
+
+let getPublicSuffixPosWASM;
+let getPublicSuffixPos = getPublicSuffixPosJS;
+
+/******************************************************************************/
+
+const getPublicSuffix = function(hostname) {
+    if ( pslBuffer32 === undefined ) { return EMPTY_STRING; }
+
+    const hostnameLen = setHostnameArg(hostname);
+    const buf8 = pslBuffer8;
+    if ( hostnameLen === 0 || buf8[0] === 0x2E /* '.' */ ) {
+        return EMPTY_STRING;
+    }
+
+    const cursorPos = getPublicSuffixPos();
+    if ( cursorPos === -1 ) {
+        return EMPTY_STRING;
+    }
+
+    const beg = buf8[cursorPos + 1];
+    return beg === 0 ? hostnameArg : hostnameArg.slice(beg);
+};
+
+/******************************************************************************/
+
+const getDomain = function(hostname) {
+    if ( pslBuffer32 === undefined ) { return EMPTY_STRING; }
+
+    const hostnameLen = setHostnameArg(hostname);
+    const buf8 = pslBuffer8;
+    if ( hostnameLen === 0 || buf8[0] === 0x2E /* '.' */ ) {
+        return EMPTY_STRING;
+    }
+
+    const cursorPos = getPublicSuffixPos();
+    if ( cursorPos === -1 || buf8[cursorPos + 1] === 0 ) {
+        return EMPTY_STRING;
+    }
+
+    // 7. The registered or registrable domain is the public suffix plus one
+    //    additional label.
+    const beg = buf8[cursorPos + 3];
+    return beg === 0 ? hostnameArg : hostnameArg.slice(beg);
+};
+
+/******************************************************************************/
+
+const toSelfie = function(encoder) {
+    if ( pslBuffer8 === undefined ) { return ''; }
+    if ( encoder instanceof Object ) {
+        const bufferStr = encoder.encode(pslBuffer8.buffer, pslByteLength);
+        return `${SELFIE_MAGIC}\t${bufferStr}`;
+    }
+    return {
+        magic: SELFIE_MAGIC,
+        buf32: Array.from(
+            new Uint32Array(pslBuffer8.buffer, 0, pslByteLength >>> 2)
+        ),
+    };
+};
+
+const fromSelfie = function(selfie, decoder) {
+    let byteLength = 0;
+    if (
+        typeof selfie === 'string' &&
+        selfie.length !== 0 &&
+        decoder instanceof Object
+    ) {
+        const pos = selfie.indexOf('\t');
+        if ( pos === -1 || selfie.slice(0, pos) !== `${SELFIE_MAGIC}` ) {
+            return false;
+        }
+        const bufferStr = selfie.slice(pos + 1);
+        byteLength = decoder.decodeSize(bufferStr);
+        if ( byteLength === 0 ) { return false; }
+        allocateBuffers(byteLength);
+        decoder.decode(bufferStr, pslBuffer8.buffer);
+    } else if (
+        selfie instanceof Object &&
+        selfie.magic === SELFIE_MAGIC &&
+        Array.isArray(selfie.buf32)
+    ) {
+        byteLength = selfie.buf32.length << 2;
+        allocateBuffers(byteLength);
+        pslBuffer32.set(selfie.buf32);
+    } else {
+        return false;
+    }
+
+    // Important!
+    hostnameArg = '';
+    pslBuffer8[LABEL_INDICES_SLOT] = 0;
+
+    fireChangedEvent();
+
+    return true;
+};
+
+/******************************************************************************/
+
+// The WASM module is entirely optional, the JS implementation will be
+// used should the WASM module be unavailable for whatever reason.
+
+const enableWASM = (function() {
+    // The directory from which the current script was fetched should also
+    // contain the related WASM file. The script is fetched from a trusted
+    // location, and consequently so will be the related WASM file.
+    let workingDir;
+    {
+        const url = new URL(document.currentScript.src);
+        const match = /[^\/]+$/.exec(url.pathname);
+        if ( match !== null ) {
+            url.pathname = url.pathname.slice(0, match.index);
+        }
+        workingDir = url.href;
+    }
+
+    let memory;
+
+    return function() {
+        if ( getPublicSuffixPosWASM instanceof Function ) {
+            return Promise.resolve(true);
+        }
+
+        if (
+            typeof WebAssembly !== 'object' ||
+            typeof WebAssembly.instantiateStreaming !== 'function'
+        ) {
+            return Promise.resolve(false);
+        }
+
+        // The wasm code will work only if CPU is natively little-endian,
+        // as we use native uint32 array in our js code.
+        const uint32s = new Uint32Array(1);
+        const uint8s = new Uint8Array(uint32s.buffer);
+        uint32s[0] = 1;
+        if ( uint8s[0] !== 1 ) {
+            return Promise.resolve(false);
+        }
+
+        return fetch(
+            workingDir + 'wasm/publicsuffixlist.wasm',
+            { mode: 'same-origin' }
+        ).then(response => {
+            const pageCount = pslBuffer8 !== undefined
+                ? pslBuffer8.byteLength + 0xFFFF >>> 16
+                : 1;
+            memory = new WebAssembly.Memory({ initial: pageCount });
+            return WebAssembly.instantiateStreaming(
+                response,
+                { imports: { memory: memory } }
+            );
+        }).then(({ instance }) => {
+            const curPageCount = memory.buffer.byteLength >>> 16;
+            const newPageCount = pslBuffer8 !== undefined
+                ? pslBuffer8.byteLength + 0xFFFF >>> 16
+                : 0;
+            if ( newPageCount > curPageCount ) {
+                memory.grow(newPageCount - curPageCount);
+            }
+            if ( pslBuffer32 !== undefined ) {
+                const buf8 = new Uint8Array(memory.buffer);
+                const buf32 = new Uint32Array(memory.buffer);
+                buf32.set(pslBuffer32);
+                pslBuffer8 = buf8;
+                pslBuffer32 = buf32;
+            }
+            wasmMemory = memory;
+            getPublicSuffixPosWASM = instance.exports.getPublicSuffixPos;
+            getPublicSuffixPos = getPublicSuffixPosWASM;
+            memory = undefined;
+            return true;
+        }).catch(reason => {
+            console.info(reason);
+            return false;
+        });
+    };
+})();
+
+const disableWASM = function() {
+    if ( getPublicSuffixPosWASM instanceof Function ) {
+        getPublicSuffixPos = getPublicSuffixPosJS;
+        getPublicSuffixPosWASM = undefined;
+    }
+    if ( wasmMemory === undefined ) { return; }
+    if ( pslBuffer32 !== undefined ) {
+        const buf8 = new Uint8Array(pslByteLength);
+        const buf32 = new Uint32Array(buf8.buffer);
+        buf32.set(pslBuffer32);
+        pslBuffer8 = buf8;
+        pslBuffer32 = buf32;
+    }
+    wasmMemory = undefined;
+};
+
+/******************************************************************************/
+
+context = context || window;
+
+context.publicSuffixList = {
+    version: '2.0',
+    parse,
+    getDomain,
+    getPublicSuffix,
+    toSelfie, fromSelfie,
+    disableWASM, enableWASM,
+};
+
+if ( typeof module !== 'undefined' ) { 
+    module.exports = context.publicSuffixList;
+} else if ( typeof exports !== 'undefined' ) {
+    exports = context.publicSuffixList;
+}
+
+/******************************************************************************/
+
+// <<<<<<<< end of anonymous namespace
+})(this);

src/lib/publicsuffixlist/wasm/README.md

@@ -0,0 +1,29 @@
+### For code reviewers
+
+All `wasm` files in that directory where created by compiling the
+corresponding `wat` file using the command (using
+`publicsuffixlist.wat`/`publicsuffixlist.wasm` as example):
+
+    wat2wasm publicsuffixlist.wat -o publicsuffixlist.wasm
+
+Assuming:
+
+- The command is executed from within the present directory.
+
+### `wat2wasm` tool
+
+The `wat2wasm` tool can be downloaded from an official WebAssembly project:
+<https://github.com/WebAssembly/wabt/releases>.
+
+### `wat2wasm` tool online
+
+You can also use the following online `wat2wasm` tool:
+<https://webassembly.github.io/wabt/demo/wat2wasm/>.
+
+Just paste the whole content of the `wat` file to compile into the WAT pane.
+Click "Download" button to retrieve the resulting `wasm` file.
+
+### See also
+
+For the curious, the following online tool allows you to find out the machine
+code as a result from the WASM code: https://mbebenita.github.io/WasmExplorer/

src/lib/publicsuffixlist/wasm/publicsuffixlist.wat

@@ -0,0 +1,317 @@
+;;
+;; uBlock Origin - a browser extension to block requests.
+;; Copyright (C) 2019-present Raymond Hill
+;;
+;; License: pick the one which suits you:
+;;   GPL v3 see <https://www.gnu.org/licenses/gpl.html>
+;;   APL v2 see <http://www.apache.org/licenses/LICENSE-2.0>
+;;
+;; Home: https://github.com/gorhill/publicsuffixlist.js
+;; File: publicsuffixlist.wat
+;;
+;; Description: WebAssembly implementation for core lookup method in
+;;              publicsuffixlist.js
+;;
+;; How to compile:
+;;
+;;     wat2wasm publicsuffixlist.wat -o publicsuffixlist.wasm
+;;
+;; The `wat2wasm` tool can be downloaded from an official WebAssembly
+;; project:
+;; https://github.com/WebAssembly/wabt/releases
+
+
+(module
+;;
+;; module start
+;;
+
+(memory (import "imports" "memory") 1)
+
+;;
+;; Tree encoding in array buffer:
+;;
+;;  Node:
+;;  +  u8: length of char data
+;;  +  u8: flags => bit 0: is_publicsuffix, bit 1: is_exception
+;;  + u16: length of array of children
+;;  + u32: char data or offset to char data
+;;  + u32: offset to array of children
+;;  = 12 bytes
+;;
+;;                                     // i32 /  i8
+;; const HOSTNAME_SLOT       = 0;      // jshint ignore:line
+;; const LABEL_INDICES_SLOT  = 256;    //  -- / 256
+;; const RULES_PTR_SLOT      = 100;    // 100 / 400
+;; const CHARDATA_PTR_SLOT   = 101;    // 101 / 404
+;; const EMPTY_STRING        = '';
+;; const SELFIE_MAGIC        = 2;
+;;
+
+;;
+;; Public functions
+;;
+
+;;
+;; unsigned int getPublicSuffixPos()
+;;
+;; Returns an offset to the start of the public suffix.
+;;
+(func (export "getPublicSuffixPos")
+    (result i32)                ;; result = match index, -1 = miss
+    (local $iCharData i32)      ;; offset to start of character data
+    (local $iNode i32)          ;; offset to current node
+    (local $iLabel i32)         ;; offset to label indices
+    (local $cursorPos i32)      ;; position of cursor within hostname argument
+    (local $labelBeg i32)
+    (local $labelLen i32)
+    (local $nCandidates i32)
+    (local $iCandidates i32)
+    (local $iFound i32)
+    (local $l i32)
+    (local $r i32)
+    (local $d i32)
+    (local $iCandidate i32)
+    (local $iCandidateNode i32)
+    (local $candidateLen i32)
+    (local $iCandidateChar i32)
+    (local $_1 i32)
+    (local $_2 i32)
+    (local $_3 i32)
+    ;;
+    ;; const iCharData = buf32[CHARDATA_PTR_SLOT];
+    i32.const 404
+    i32.load
+    set_local $iCharData
+    ;; let iNode = pslBuffer32[RULES_PTR_SLOT];
+    i32.const 400
+    i32.load
+    i32.const 2
+    i32.shl
+    set_local $iNode
+    ;; let iLabel = LABEL_INDICES_SLOT;
+    i32.const 256
+    set_local $iLabel
+    ;; let cursorPos = -1;
+    i32.const -1
+    set_local $cursorPos
+    ;; label-lookup loop
+    ;; for (;;) {
+    block $labelLookupDone loop $labelLookup
+        ;; // Extract label indices
+        ;; const labelBeg = buf8[iLabel+1];
+        ;; const labelLen = buf8[iLabel+0] - labelBeg;
+        get_local $iLabel
+        i32.load8_u
+        get_local $iLabel
+        i32.load8_u offset=1
+        tee_local $labelBeg
+        i32.sub
+        set_local $labelLen
+        ;; // Match-lookup loop: binary search
+        ;; let r = buf32[iNode+0] >>> 16;
+        ;; if ( r === 0 ) { break; }
+        get_local $iNode
+        i32.load16_u offset=2
+        tee_local $r
+        i32.eqz
+        br_if $labelLookupDone
+        ;; const iCandidates = buf32[iNode+2];
+        get_local $iNode
+        i32.load offset=8
+        i32.const 2
+        i32.shl
+        set_local $iCandidates
+        ;; let l = 0;
+        ;; let iFound = 0;
+        i32.const 0
+        tee_local $l
+        set_local $iFound
+        ;; while ( l < r ) {
+        block $binarySearchDone loop $binarySearch
+            get_local $l
+            get_local $r
+            i32.ge_u
+            br_if $binarySearchDone
+            ;; const iCandidate = l + r >>> 1;
+            get_local $l
+            get_local $r
+            i32.add
+            i32.const 1
+            i32.shr_u
+            tee_local $iCandidate
+            ;; const iCandidateNode = iCandidates + iCandidate + (iCandidate << 1);
+            i32.const 2
+            i32.shl
+            tee_local $_1
+            get_local $_1
+            i32.const 1
+            i32.shl
+            i32.add
+            get_local $iCandidates
+            i32.add
+            tee_local $iCandidateNode
+            ;; const candidateLen = buf32[iCandidateNode+0] & 0x000000FF;
+            i32.load8_u
+            set_local $candidateLen
+            ;; let d = labelLen - candidateLen;
+            get_local $labelLen
+            get_local $candidateLen
+            i32.sub
+            tee_local $d
+            ;; if ( d === 0 ) {
+            i32.eqz
+            if
+                ;; const iCandidateChar = candidateLen <= 4
+                get_local $candidateLen
+                i32.const 4
+                i32.le_u
+                if
+                    ;; ? iCandidateNode + 1 << 2
+                    get_local $iCandidateNode
+                    i32.const 4
+                    i32.add
+                    set_local $iCandidateChar
+                else
+                    ;; : buf32[CHARDATA_PTR_SLOT] + buf32[iCandidateNode+1];
+                    get_local $iCharData
+                    get_local $iCandidateNode
+                    i32.load offset=4
+                    i32.add
+                    set_local $iCandidateChar
+                end
+                ;; for ( let i = 0; i < labelLen; i++ ) {
+                get_local $labelBeg
+                tee_local $_1
+                get_local $labelLen
+                i32.add
+                set_local $_3
+                get_local $iCandidateChar
+                set_local $_2
+                block $findDiffDone loop $findDiff
+                    ;; d = buf8[labelBeg+i] - buf8[iCandidateChar+i];
+                    ;; if ( d !== 0 ) { break; }
+                    get_local $_1
+                    i32.load8_u
+                    get_local $_2
+                    i32.load8_u
+                    i32.sub
+                    tee_local $d
+                    br_if $findDiffDone
+                    get_local $_1
+                    i32.const 1
+                    i32.add
+                    tee_local $_1
+                    get_local $_3
+                    i32.eq
+                    br_if $findDiffDone
+                    get_local $_2
+                    i32.const 1
+                    i32.add
+                    set_local $_2
+                    br $findDiff
+                ;; }
+                end end
+            ;; }
+            end
+            ;; if ( d < 0 ) {
+            ;;     r = iCandidate;
+            get_local $d
+            i32.const 0
+            i32.lt_s
+            if
+                get_local $iCandidate
+                set_local $r
+                br $binarySearch
+            end
+            ;; } else if ( d > 0 ) {
+            ;;     l = iCandidate + 1;
+            get_local $d
+            i32.const 0
+            i32.gt_s
+            if
+                get_local $iCandidate
+                i32.const 1
+                i32.add
+                set_local $l
+                br $binarySearch
+            end
+            ;; } else /* if ( d === 0 ) */ {
+            ;;     iFound = iCandidateNode;
+            ;;     break;
+            ;; }
+            get_local $iCandidateNode
+            set_local $iFound
+        end end
+        ;; }
+        ;; // 2. If no rules match, the prevailing rule is "*".
+        ;; if ( iFound === 0 ) {
+        ;;     if ( buf8[iCandidates + 1 << 2] !== 0x2A /* '*' */ ) { break; }
+        ;;     iFound = iCandidates;
+        ;; }
+        get_local $iFound
+        i32.eqz
+        if
+            get_local $iCandidates
+            i32.load8_u offset=4
+            i32.const 0x2A
+            i32.ne
+            br_if $labelLookupDone
+            get_local $iCandidates
+            set_local $iFound
+        end
+        ;; iNode = iFound;
+        get_local $iFound
+        tee_local $iNode
+        ;; // 5. If the prevailing rule is a exception rule, modify it by
+        ;; //    removing the leftmost label.
+        ;; if ( (buf32[iNode+0] & 0x00000200) !== 0 ) {
+        ;;     if ( iLabel > LABEL_INDICES_SLOT ) {
+        ;;         return iLabel - 2;
+        ;;     }
+        ;;     break;
+        ;; }
+        i32.load8_u offset=1
+        tee_local $_1
+        i32.const 0x02
+        i32.and
+        if
+            get_local $iLabel
+            i32.const 256
+            i32.gt_u
+            if
+                get_local $iLabel
+                i32.const -2
+                i32.add
+                return
+            end
+            br $labelLookupDone
+        end
+        ;; if ( (buf32[iNode+0] & 0x00000100) !== 0 ) {
+        ;;     cursorPos = labelBeg;
+        ;; }
+        get_local $_1
+        i32.const 0x01
+        i32.and
+        if
+            get_local $iLabel
+            set_local $cursorPos
+        end
+        ;; if ( labelBeg === 0 ) { break; }
+        get_local $labelBeg
+        i32.eqz
+        br_if $labelLookupDone
+        ;; iLabel += 2;
+        get_local $iLabel
+        i32.const 2
+        i32.add
+        set_local $iLabel
+        br $labelLookup
+    end end
+    get_local $cursorPos
+)
+
+;;
+;; module end
+;;
+)

src/logger-ui.html

@@ -2,83 +2,148 @@
 <html>
 <head>
 <meta charset="utf-8">
-<meta name="viewport" content="width=device-width, initial-scale=1">
-<link rel="stylesheet" href="css/common.css" type="text/css">
+<meta name="viewport" content="width=560, initial-scale=1">
+<link rel="stylesheet" type="text/css" href="css/common.css">
 <link rel="stylesheet" href="css/fa-icons.css" type="text/css">
-<link rel="stylesheet" href="css/scope-selector.css" type="text/css">
-<link rel="stylesheet" href="css/logger-ui.css" type="text/css">
-<link rel="shortcut icon" href="img/icon_16.png" type="image/png">
+<link rel="stylesheet" type="text/css" href="css/logger-ui.css">
+<link rel="shortcut icon" type="image/png" href="img/icon_64.png">
 <title data-i18n="loggerPageName"></title>
+<style id="vwRendererRuntimeStyles"></style>
 </head>
-<body class="compactView f">
+<body>
 
-<div id="toolbar">
+<div class="permatoolbar">
     <div>
         <select id="pageSelector">
-            <option value="" data-i18n="statsPageDetailedAllPages">
-            <option value="-1" data-i18n="statsPageDetailedBehindTheScenePage">
+            <option value="0" data-i18n="logAll">
+            <option value="-1" data-i18n="logBehindTheScene">
+            <option value="_" data-i18n="loggerCurrentTab">
         </select>
-        <span id="reloadTab" class="fa-icon disabled">refresh</span>
-        <span id="popupPanelButton" class="fa-icon disabled">th</span>
+        <span id="refresh" class="button fa-icon disabled needtab" data-i18n-title="loggerReloadTip">refresh</span>
+        <span id="showpopup" class="button px-icon disabled needtab" data-i18n-title="loggerPopupPanelTip"><img src="/img/icon_64.png"></span>
     </div>
     <div>
-        <span id="compactViewToggler" class="fa-icon">double-angle-up</span>
-        <span id="clean" class="fa-icon disabled">times</span>
-        <span id="clear" class="fa-icon disabled">eraser</span>
-        <span id="filterButton" class="fa-icon">filter</span>
-        <input id="filterInput" type="text" placeholder="loggerFilterInputPlaceholder">
-        <input id="maxEntries" type="text" size="5" title="loggerMaxEntriesTip">
+        <a id="info" class="button fa-icon" href="https://github.com/gorhill/uBlock/wiki/The-logger" target="_blank" data-i18n-title="loggerInfoTip">info-circle</a>
     </div>
 </div>
 
-<div id="popupPanelContainer"></div>
+<div id="inspectors">
+    <div id="netInspector" class="inspector f">
+        <div class="permatoolbar">
+            <div>
+                <span class="button fa-icon vCompactToggler">double-angle-up</span>
+                <span id="clean" class="button fa-icon disabled">times</span>
+                <span id="clear" class="button fa-icon disabled" data-i18n-title="loggerClearTip">eraser</span>
+                <span id="pause"><span class="button fa-icon" data-i18n-title="loggerPauseTip">pause-circle-o</span><span class="button fa-icon" data-i18n-title="loggerUnpauseTip">play-circle-o</span></span>
+                <span id="filterExprGroup">
+                    <span id="filterButton" class="button fa-icon" data-i18n-title="loggerRowFiltererButtonTip">filter</span>
+                    <span id="filterInput">
+                        <input type="search" placeholder="logFilterPrompt">
+                        <span id="filterExprButton" class="button fa-icon expanded" data-i18n-title="loggerRowFiltererBuiltinTip">angle-up</span>
+                        <div id="filterExprPicker">
+                            <div><span data-filtex="!" data-i18n="loggerRowFiltererBuiltinNot"></span><span data-filtex="\t(?:--|\+\+)\t" data-i18n="loggerRowFiltererBuiltinBlocked"></span><span data-filtex="\tinfo\t" data-i18n="loggerRowFiltererBuiltinInfo"></span></div>
+                            <div><span data-filtex="!" data-i18n="loggerRowFiltererBuiltinNot"></span>
+                                <span style="flex-direction: column;">
+                                    <div style="margin-bottom: 1px;"><span data-filtex="\tcookie\t">cookie</span><span data-filtex="\t(?:css|(?:inline-)?font)\t">css/font</span><span data-filtex="\timage\t">image</span><span data-filtex="\tmedia\t">media</span><span data-filtex="\t(?:inline-)?script(?:ing)?\t">script</span></div>
+                                    <div><span data-filtex="\t(?:fetch|websocket|xhr)\t">fetch</span><span data-filtex="\tframe\t">frame</span><span data-filtex="\t(?:beacon|csp_report|ping|other)\t">other</span></div>
+                                </span>
+                            </div>
+                            <div><span data-filtex="!" data-i18n="loggerRowFiltererBuiltinNot"></span><span data-filtex="\t(?:0,)?1\t" data-i18n="loggerRowFiltererBuiltin1p"></span><span data-filtex="\t(?:3(?:,\d)?|0,3)\t" data-i18n="loggerRowFiltererBuiltin3p"></span></div>
+                            <div id="filterExprCnameOf" style="display:none"><span data-filtex="!" data-i18n="loggerRowFiltererBuiltinNot"></span><span data-filtex="\taliasURL=.">CNAME</span></div>
+                        </div>
+                    </span>
+                </span>
+            </div>
+            <div>
+                <span id="loggerStats" class="button fa-icon" style="display: none;">bar-chart</span>
+                <span id="loggerExport" class="button fa-icon">clipboard</span>
+                <span id="loggerSettings" class="button fa-icon">cog</span>
+            </div>
+        </div>
+        <div class="vscrollable">
+            <div id="vwRenderer">
+                <div id="vwScroller">
+                    <div id="vwVirtualContent">
+                        <div id="vwContent"></div>
+                    </div>
+                </div>
+                <div id="vwLineSizer">
+                    <div class="logEntry oneLine"><div><span>00:00:00</span><span>%35%</span><span>+++</span><span>%65%</span><span>1234567890</span><span>+++</span></div></div>
+                </div>
+            </div>
+        </div>
+    </div>
+    <iframe id="popupContainer"></iframe>
+</div>
 
-<div id="content">
-    <style id="tabFilterer"></style>
-    <table>
-    <colgroup><col><col><col><col><col><col></colgroup>
-    <tbody></tbody>
-    </table>
+<div id="modalOverlay">
+    <div>
+        <div id="modalOverlayContainer"></div>
+        <div id="modalOverlayClose"><svg viewBox="0 0 64 64"><path d="M 16 16 L 48 48 M 16 48 L 48 16" /></svg></div>
+    </div>
+</div>
+
+<div id="templates" style="display: none;">
+    <div id="logEntryTemplate"><div><span></span>&#8203;<span>--</span>&#8203;<span></span>&#8203;<span></span>&#8203;<span></span>&#8203;<span></span></div></div>
+
+    <div id="netFilteringDialog" data-pane="rule">
+        <div class="headers">
+            &ensp;
+            <span class="header" data-pane="rule" data-i18n="loggerEntryRuleHeader"></span>
+            <span class="header" data-pane="details" data-i18n="loggerEntryDetailsHeader"></span>
+        </div>
+        <div class="panes">
+            <div class="pane" data-pane="rule">
+                <iframe></iframe>
+            </div>
+            <div class="pane" data-pane="details">
+                <div><span data-i18n="loggerEntryDetailsContext"></span><span></span></div>
+                <div><span data-i18n="loggerEntryDetailsPartyness"></span><span class="prose"></span></div>
+                <div><span data-i18n="loggerEntryDetailsType"></span><span></span></div>
+                <div><span data-i18n="loggerEntryDetailsURL"></span><span></span></div>
+                <div><span>CNAME</span><span></span></div>
+                <div><span>Original URL</span><span></span></div>
+            </div>
+        </div>
+    </div>
+
+    <div id="loggerExportDialog">
+        <div class="options">
+            <div data-radio="format">
+                <span data-i18n="loggerExportFormatList" data-radio-item="list"></span>
+                <span data-i18n="loggerExportFormatTable" data-radio-item="table"></span>
+            </div>
+            <div data-radio="encoding">
+                <span data-i18n="loggerExportEncodePlain" data-radio-item="plain"></span>
+                <span data-i18n="loggerExportEncodeMarkdown" data-radio-item="markdown"></span>
+            </div>
+            <div>
+                <span data-i18n="genericCopyToClipboard" class="pushbutton"></span>
+            </div>
+        </div>
+        <textarea class="output" readonly spellcheck="false"></textarea>
+    </div>
+
+    <div id="loggerSettingsDialog">
+        <div><span data-i18n="loggerSettingDiscardPrompt"></span>
+            <ul>
+            <li><label data-i18n="loggerSettingPerEntryMaxAge"><input type="number" min="0" max="50000" /></label>
+            <li><label data-i18n="loggerSettingPerTabMaxLoads"><input type="number" min="0" max="1000000" /></label>
+            <li><label data-i18n="loggerSettingPerTabMaxEntries"><input type="number" min="0" max="1000000" /></label>
+            </ul>
+        </div>
+        <div><label data-i18n="loggerSettingPerEntryLineCount"><input type="number" min="2" max="6"></label></div>
     </div>
 
-<div style="display: none;">
-    <div id="emphasizeTemplate"><span><span></span><b></b><span></span></span></div>
-    <div id="hiddenTemplate"><span style="display:none;"></span></div>
-    <div id="ruleEditor" class="modalDialog">
-        <div class="dialog">
-            <section class="scopeWidget">
-                <span class="scope" id="specificScope"><span>&nbsp;</span></span><!--
-             --><span class="scope tip-anchor-right" id="globalScope" data-scope="*" data-i18n-tip="matrixGlobalScopeTip"><span><span>&#x2217;</span></span></span>
-                <div class="ruleEditorToolbar">
-                    <span id="matrixReloadButton" class="fa-icon tip-anchor-right" data-i18n-tip="matrixReloadButton">refresh</span>
-                </div>
-            </section>
-            <section>
-                <div class="ruleWidgets"></div>
-                <div class="ruleEditorToolbar">
-                    <span id="matrixRevertButton" class="fa-icon scopeRel tip-anchor-right" data-i18n-tip="matrixRevertButtonTip">reply</span>
-                    <span id="matrixPersistButton" class="fa-icon fa-icon-badged scopeRel tip-anchor-right" data-i18n-tip="matrixPersistButtonTip">lock</span>
-                </section>
-            </section>
-        </div>
-    </div>
-    <div id="ruleRowTemplate" style="display: none;">
-        <div class="ruleRow"><!--
-         --><span class="ruleCell" data-type="*">&nbsp;</span><!--
-         --><span class="ruleCell" data-type>&nbsp;</span><!--
-    --></div>
-    </div>
-    <div id="ruleActionPicker"><div class="allowRule"></div><div class="blockRule"></div></div>
 </div>
 
 <script src="js/fa-icons.js"></script>
-<script src="lib/punycode.js"></script>
-<script src="lib/publicsuffixlist.js"></script>
+<script src="js/vapi.js"></script>
 <script src="js/vapi-common.js"></script>
 <script src="js/vapi-client.js"></script>
+<script src="js/vapi-client-extra.js"></script>
 <script src="js/udom.js"></script>
 <script src="js/i18n.js"></script>
-<script src="js/scope-selector.js"></script>
 <script src="js/logger-ui.js"></script>
 
 </body>

src/main-blocked.html

@@ -34,6 +34,7 @@
     </div>
 
 <script src="js/fa-icons.js"></script>
+<script src="js/vapi.js"></script>
 <script src="js/vapi-common.js"></script>
 <script src="js/vapi-client.js"></script>
 <script src="js/udom.js"></script>

src/popup.html

@@ -14,7 +14,7 @@
 <body>
 
 <div class="paneHead">
-    <a id="gotoDashboard" class="extensionURL" href="#" data-extension-url="dashboard.html" data-i18n-tip="matrixDashboardMenuEntry">uMatrix <span id="version"> </span></a>
+    <div id="gotoDashboard" data-extension-url="dashboard.html" data-i18n-tip="matrixDashboardMenuEntry">uMatrix <span id="version"> </span></div>
     <div id="toolbarContainer">
         <div class="toolbar">
             <span class="scope" id="specificScope"><span>&nbsp;</span></span><!--
@@ -25,16 +25,16 @@
             <span id="buttonPersist" class="fa-icon fa-icon-badged scopeRel tip-anchor-center" data-i18n-tip="matrixPersistButtonTip">lock</span>
             <span id="buttonRevertScope" class="fa-icon fa-icon-badged scopeRel tip-anchor-center" data-i18n-tip="matrixRevertButtonTip">reply</span>
             </div>
-        <div class="toolbar">
+        <div class="toolbar needtab">
             <span id="buttonReload" class="fa-icon tip-anchor-right" data-i18n-tip="matrixReloadButton">refresh</span>
             </div>
         <div class="toolbar">
-            <span id="buttonRevertAll" class="fa-icon tip-anchor-right" data-i18n-tip="matrixRevertAllEntry">reply-all</span>
-            <span class="fa-icon extensionURL tip-anchor-right" data-extension-url="logger-ui.html"  data-i18n-tip="matrixLoggerMenuEntry">list-alt</span>
+            <span id="buttonRevertAll" class="fa-icon tip-anchor-right needtab" data-i18n-tip="matrixRevertAllEntry">reply-all</span>
+            <span class="fa-icon tip-anchor-right" data-extension-url="logger-ui.html#_"  data-i18n-tip="matrixLoggerMenuEntry">list-alt</span>
             </div>
     </div>
     <div id="matHead" class="matrix collapsible">
-        <div class="matRow rw" style="display:none"><div class="matCell" data-req-type="all">all</div><div class="matCell" data-req-type="cookie">cookie</div><div class="matCell" data-req-type="css">css</div><div class="matCell" data-req-type="image">img</div><div class="matCell" data-req-type="media">media</div><div class="matCell" data-req-type="script">script</div><div class="matCell" data-req-type="xhr">XHR</div><div class="matCell" data-req-type="frame">frame</div><div class="matCell" data-req-type="other">other</div></div>
+        <div class="matRow rw" style="display:none"><div class="matCell" data-req-type="all">all</div><div class="matCell" data-req-type="cookie">cookie</div><div class="matCell" data-req-type="css">css</div><div class="matCell" data-req-type="image">img</div><div class="matCell" data-req-type="media">media</div><div class="matCell" data-req-type="script">script</div><div class="matCell" data-req-type="fetch">fetch</div><div class="matCell" data-req-type="frame">frame</div><div class="matCell" data-req-type="other">other</div></div>
     </div>
 </div>
 
@@ -68,10 +68,11 @@
 <div id="dropDownMenuSwitches" class="dropdown-menu-capture">
     <div class="dropdown-menu">
         <ul id="mtxSwitches">
-            <li id="mtxSwitch_https-strict" class="dropdown-menu-entry exists"><!-- <svg><use xlink:href="#toggleButton" /></svg> --><svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 152 96"><g style="fill:#bbb;"><ellipse cx="48" cy="48" rx="24" ry="24" /><ellipse cx="104" cy="48" rx="24" ry="24" /><rect width="56" height="48" x="48" y="24" /></g><g class="off" style="fill:#bbb;"><ellipse cx="48" cy="48" rx="48" ry="48" /><ellipse style="fill:#fff;" cx="48" cy="48" rx="40" ry="40" /><ellipse class="dot" cx="48" cy="48" rx="12" ry="12" /></g><g class="on" style="fill:#bbb;"><ellipse style="fill:#444;" cx="104" cy="48" rx="48" ry="48" /><ellipse class="dot" cx="104" cy="48" rx="12" ry="12" /></g></svg><span data-i18n="matrixSwitchNoMixedContent"></span>&emsp;<a class="fa-icon" href="https://developer.mozilla.org/docs/Web/Security/Mixed_content" target="_blank">info-circle</a>
-            <li id="mtxSwitch_no-workers" class="dropdown-menu-entry exists"><!-- <svg><use xlink:href="#toggleButton" /></svg> --><svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 152 96"><g style="fill:#bbb;"><ellipse cx="48" cy="48" rx="24" ry="24" /><ellipse cx="104" cy="48" rx="24" ry="24" /><rect width="56" height="48" x="48" y="24" /></g><g class="off" style="fill:#bbb;"><ellipse cx="48" cy="48" rx="48" ry="48" /><ellipse style="fill:#fff;" cx="48" cy="48" rx="40" ry="40" /><ellipse class="dot" cx="48" cy="48" rx="12" ry="12" /></g><g class="on" style="fill:#bbb;"><ellipse style="fill:#444;" cx="104" cy="48" rx="48" ry="48" /><ellipse class="dot" cx="104" cy="48" rx="12" ry="12" /></g></svg><span data-i18n="matrixSwitchNoWorker"></span>&emsp;<a class="fa-icon" href="https://developer.mozilla.org/docs/Web/API/Web_Workers_API" target="_blank">info-circle</a>
-            <li id="mtxSwitch_referrer-spoof" class="dropdown-menu-entry"><!-- <svg><use xlink:href="#toggleButton" /></svg> --><svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 152 96"><g style="fill:#bbb;"><ellipse cx="48" cy="48" rx="24" ry="24" /><ellipse cx="104" cy="48" rx="24" ry="24" /><rect width="56" height="48" x="48" y="24" /></g><g class="off" style="fill:#bbb;"><ellipse cx="48" cy="48" rx="48" ry="48" /><ellipse style="fill:#fff;" cx="48" cy="48" rx="40" ry="40" /><ellipse class="dot" cx="48" cy="48" rx="12" ry="12" /></g><g class="on" style="fill:#bbb;"><ellipse style="fill:#444;" cx="104" cy="48" rx="48" ry="48" /><ellipse class="dot" cx="104" cy="48" rx="12" ry="12" /></g></svg><span data-i18n="matrixSwitchReferrerSpoof"></span>&emsp;<a class="fa-icon" href="https://developer.mozilla.org/docs/Web/HTTP/Headers/Referer" target="_blank">info-circle</a>
-            <li id="mtxSwitch_noscript-spoof" class="dropdown-menu-entry"><!-- <svg><use xlink:href="#toggleButton" /></svg> --><svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 152 96"><g style="fill:#bbb;"><ellipse cx="48" cy="48" rx="24" ry="24" /><ellipse cx="104" cy="48" rx="24" ry="24" /><rect width="56" height="48" x="48" y="24" /></g><g class="off" style="fill:#bbb;"><ellipse cx="48" cy="48" rx="48" ry="48" /><ellipse style="fill:#fff;" cx="48" cy="48" rx="40" ry="40" /><ellipse class="dot" cx="48" cy="48" rx="12" ry="12" /></g><g class="on" style="fill:#bbb;"><ellipse style="fill:#444;" cx="104" cy="48" rx="48" ry="48" /><ellipse class="dot" cx="104" cy="48" rx="12" ry="12" /></g></svg><span data-i18n="matrixSwitchNoscriptSpoof"></span>&emsp;<a class="fa-icon" href="https://developer.mozilla.org/docs/Web/HTML/Element/noscript" target="_blank">info-circle</a>
+            <li id="mtxSwitch_https-strict" class="dropdown-menu-entry exists"><!-- <svg><use xlink:href="#toggleButton" /></svg> --><svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 152 96"><g><ellipse cx="48" cy="48" rx="24" ry="24" /><ellipse cx="104" cy="48" rx="24" ry="24" /><rect width="56" height="48" x="48" y="24" /></g><g class="off"><ellipse cx="48" cy="48" rx="48" ry="48" /><ellipse style="fill:#fff;" cx="48" cy="48" rx="40" ry="40" /><ellipse class="dot" cx="48" cy="48" rx="12" ry="12" /></g><g class="on"><ellipse style="fill:#444;" cx="104" cy="48" rx="48" ry="48" /><ellipse class="dot" cx="104" cy="48" rx="12" ry="12" /></g></svg><span data-i18n="matrixSwitchNoMixedContent"></span>&emsp;<a class="fa-icon" href="https://developer.mozilla.org/docs/Web/Security/Mixed_content" target="_blank">info-circle</a>
+            <li id="mtxSwitch_no-workers" class="dropdown-menu-entry exists"><!-- <svg><use xlink:href="#toggleButton" /></svg> --><svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 152 96"><g><ellipse cx="48" cy="48" rx="24" ry="24" /><ellipse cx="104" cy="48" rx="24" ry="24" /><rect width="56" height="48" x="48" y="24" /></g><g class="off"><ellipse cx="48" cy="48" rx="48" ry="48" /><ellipse style="fill:#fff;" cx="48" cy="48" rx="40" ry="40" /><ellipse class="dot" cx="48" cy="48" rx="12" ry="12" /></g><g class="on"><ellipse style="fill:#444;" cx="104" cy="48" rx="48" ry="48" /><ellipse class="dot" cx="104" cy="48" rx="12" ry="12" /></g></svg><span data-i18n="matrixSwitchNoWorker"></span>&emsp;<a class="fa-icon" href="https://developer.mozilla.org/docs/Web/API/Web_Workers_API" target="_blank">info-circle</a>
+            <li id="mtxSwitch_referrer-spoof" class="dropdown-menu-entry"><!-- <svg><use xlink:href="#toggleButton" /></svg> --><svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 152 96"><g><ellipse cx="48" cy="48" rx="24" ry="24" /><ellipse cx="104" cy="48" rx="24" ry="24" /><rect width="56" height="48" x="48" y="24" /></g><g class="off"><ellipse cx="48" cy="48" rx="48" ry="48" /><ellipse style="fill:#fff;" cx="48" cy="48" rx="40" ry="40" /><ellipse class="dot" cx="48" cy="48" rx="12" ry="12" /></g><g class="on"><ellipse style="fill:#444;" cx="104" cy="48" rx="48" ry="48" /><ellipse class="dot" cx="104" cy="48" rx="12" ry="12" /></g></svg><span data-i18n="matrixSwitchReferrerSpoof"></span>&emsp;<a class="fa-icon" href="https://developer.mozilla.org/docs/Web/HTTP/Headers/Referer" target="_blank">info-circle</a>
+            <li id="mtxSwitch_noscript-spoof" class="dropdown-menu-entry"><!-- <svg><use xlink:href="#toggleButton" /></svg> --><svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 152 96"><g><ellipse cx="48" cy="48" rx="24" ry="24" /><ellipse cx="104" cy="48" rx="24" ry="24" /><rect width="56" height="48" x="48" y="24" /></g><g class="off"><ellipse cx="48" cy="48" rx="48" ry="48" /><ellipse style="fill:#fff;" cx="48" cy="48" rx="40" ry="40" /><ellipse class="dot" cx="48" cy="48" rx="12" ry="12" /></g><g class="on"><ellipse style="fill:#444;" cx="104" cy="48" rx="48" ry="48" /><ellipse class="dot" cx="104" cy="48" rx="12" ry="12" /></g></svg><span data-i18n="matrixSwitchNoscriptSpoof"></span>&emsp;<a class="fa-icon" href="https://developer.mozilla.org/docs/Web/HTML/Element/noscript" target="_blank">info-circle</a>
+            <li id="mtxSwitch_cname-reveal" class="dropdown-menu-entry"><!-- <svg><use xlink:href="#toggleButton" /></svg> --><svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 152 96"><g><ellipse cx="48" cy="48" rx="24" ry="24" /><ellipse cx="104" cy="48" rx="24" ry="24" /><rect width="56" height="48" x="48" y="24" /></g><g class="off"><ellipse cx="48" cy="48" rx="48" ry="48" /><ellipse style="fill:#fff;" cx="48" cy="48" rx="40" ry="40" /><ellipse class="dot" cx="48" cy="48" rx="12" ry="12" /></g><g class="on"><ellipse style="fill:#444;" cx="104" cy="48" rx="48" ry="48" /><ellipse class="dot" cx="104" cy="48" rx="12" ry="12" /></g></svg><span data-i18n="matrixSwitchRevealCname"></span>&emsp;<a class="fa-icon" href="https://en.wikipedia.org/wiki/CNAME_record" target="_blank">info-circle</a>
         </ul>
     </div>
 </div>
@@ -118,6 +119,7 @@
 
 <script src="js/fa-icons.js"></script>
 <script src="lib/punycode.js"></script>
+<script src="js/vapi.js"></script>
 <script src="js/vapi-common.js"></script>
 <script src="js/vapi-client.js"></script>
 <script src="js/udom.js"></script>

src/raw-settings.html

@@ -3,10 +3,15 @@
 <head>
 <meta charset="utf-8">
 <title data-i18n="rawSettingsPageName"></title>
+
+<link rel="stylesheet" href="lib/codemirror/lib/codemirror.css">
+
 <link rel="stylesheet" href="css/fa-icons.css">
 <link rel="stylesheet" href="css/common.css">
 <link rel="stylesheet" href="css/dashboard-common.css">
 <link rel="stylesheet" href="css/raw-settings.css">
+<link rel="stylesheet" href="css/codemirror.css">
+
 <link rel="shortcut icon" type="image/png" href="img/icon_16.png"/>
 </head>
 
@@ -18,11 +23,17 @@
 <p><button id="rawSettingsApply" class="custom important" type="button" disabled="true" data-i18n="genericApplyChanges"></button>&ensp;
     </p>
 
-<textarea id="rawSettings" dir="auto" spellcheck="false"></textarea>
-
 </div><!-- end of div.body -->
 
+<div id="rawSettings" class="codeMirrorContainer codeMirrorFillVertical"></div>
+
+<script src="lib/codemirror/lib/codemirror.js"></script>
+<script src="lib/codemirror/addon/selection/active-line.js"></script>
+
+<script src="js/codemirror/mode/raw-settings.js"></script>
+
 <script src="js/fa-icons.js"></script>
+<script src="js/vapi.js"></script>
 <script src="js/vapi-common.js"></script>
 <script src="js/vapi-client.js"></script>
 <script src="js/udom.js"></script>

src/settings.html

@@ -115,6 +115,7 @@ ul > li.separator {
 </div><!-- end of div.body -->
 
 <script src="js/fa-icons.js"></script>
+<script src="js/vapi.js"></script>
 <script src="js/vapi-common.js"></script>
 <script src="js/vapi-client.js"></script>
 <script src="js/udom.js"></script>

src/user-rules.html

@@ -40,7 +40,7 @@
                 <button type="button" id="editSaveButton" data-i18n="userRulesEditSave"></button>
             </div>
         </div>
-        <div id="ruleFilter"><span class="fa-icon">filter</span>&ensp;<input type="text" size="32"></div>
+        <div id="ruleFilter"><span class="fa-icon">filter</span>&ensp;<input type="search" size="32"></div>
     </div>
     <div class="codeMirrorContainer codeMirrorMergeContainer vfill-available"></div>
 </div>
@@ -56,6 +56,7 @@
 <script src="lib/codemirror/addon/selection/active-line.js"></script>
 
 <script src="js/fa-icons.js"></script>
+<script src="js/vapi.js"></script>
 <script src="js/vapi-common.js"></script>
 <script src="js/vapi-client.js"></script>
 <script src="js/udom.js"></script>