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diff -r 81fc811c3c39 toolkit/components/translations/actors/TranslationsParent.sys.mjs
--- a/toolkit/components/translations/actors/TranslationsParent.sys.mjs Thu Aug 08 21:26:29 2024 -0700
+++ b/toolkit/components/translations/actors/TranslationsParent.sys.mjs Sat Aug 10 16:45:13 2024 -0700
@@ -618,16 +618,25 @@
* Detect if Wasm SIMD is supported, and cache the value. It's better to check
* for support before downloading large binary blobs to a user who can't even
* use the feature. This function also respects mocks and simulating unsupported
* engines.
*
* @type {boolean}
*/
static getIsTranslationsEngineSupported() {
+ try {
+ // Ensure WebAssembly is supported and enabled (may not be on tier-3).
+ if (!WebAssembly) {
+ return false;
+ }
+ } catch(e) {
+ return false;
+ }
+
if (lazy.simulateUnsupportedEnginePref) {
// Use the non-lazy console.log so that the user is always informed as to why
// the translations engine is not working.
console.log(
"Translations: The translations engine is disabled through the pref " +
'"browser.translations.simulateUnsupportedEngine".'
);
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