From a9bcc70a2b5aef140f75fec76e44a067195bbef0 Mon Sep 17 00:00:00 2001
From: Raymond Hill <rhill@raymondhill.net>
Date: Mon, 23 Dec 2019 09:07:42 -0500
Subject: [PATCH] Minor code review of WASM-loading code

---
 src/js/hntrie.js | 7 +++----
 src/js/start.js  | 4 +++-
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/js/hntrie.js b/src/js/hntrie.js
index 4c2e662..3ab3117 100644
--- a/src/js/hntrie.js
+++ b/src/js/hntrie.js
@@ -519,12 +519,11 @@ const HNTrieContainer = class {
     }
 
     async initWASM() {
-        const module = await HNTrieContainer.enableWASM();
-        if ( module instanceof WebAssembly.Module === false ) { return false; }
-
         if ( this.wasmInstancePromise !== null ) {
-            return true;
+            return this.wasmInstancePromise;
         }
+        const module = await HNTrieContainer.enableWASM();
+        if ( module instanceof WebAssembly.Module === false ) { return false; }
         const memory = new WebAssembly.Memory({ initial: 2 });
         this.wasmInstancePromise = WebAssembly.instantiate(
             module,
diff --git a/src/js/start.js b/src/js/start.js
index fa1d7a0..bd37cc9 100644
--- a/src/js/start.js
+++ b/src/js/start.js
@@ -32,7 +32,9 @@
     ]);
     log.info(`User settings ready ${Date.now()-vAPI.T0} ms after launch`);
 
-    const shouldWASM = µm.rawSettings.disableWebAssembly !== true;
+    const shouldWASM =
+        vAPI.canWASM === true &&
+        µm.rawSettings.disableWebAssembly !== true;
     if ( shouldWASM ) {
         await Promise.all([
             µm.HNTrieContainer.enableWASM(),