Invert test

GoogleChromeLabs · Aug 21, 2020 · 5877efb · 5877efb
1 parent 209852e
commit 5877efb
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Showing 2 changed files with 5 additions and 4 deletions.
diff --git a/README.md b/README.md
@@ -6,7 +6,7 @@ A small library to detect which features of WebAssembly are supported.
 - ✅ Runs in Node
 - ✅ Provided as an ES6 module, CommonJS and UMD module.
 - ✅ CSP compatible
-- ✅ Only ~550B gzipped
+- ✅ Only ~570B gzipped
 
 ## Installation
 

diff --git a/src/detectors/threads/index.js b/src/detectors/threads/index.js
@@ -13,9 +13,10 @@
 
 export default async moduleBytes => {
   try {
-    const MessageChannelConstructor = await import("worker_threads")
-      .then(m => m.MessageChannel)
-      .catch(() => MessageChannel);
+    const MessageChannelConstructor =
+      typeof MessageChannel !== "undefined"
+        ? MessageChannel
+        : await import("worker_threads").then(m => m.MessageChannel);
     // Test for transferability of SABs (needed for Firefox)
     // https://groups.google.com/forum/#!msg/mozilla.dev.platform/IHkBZlHETpA/dwsMNchWEQAJ
     new MessageChannelConstructor().port1.postMessage(new SharedArrayBuffer(1));