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Fix crash issue when using es5-sham 4.5.15 #466

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merged 1 commit into from Apr 29, 2021
Merged

Fix crash issue when using es5-sham 4.5.15 #466

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5 changes: 4 additions & 1 deletion es6-shim.js
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Expand Up @@ -1268,7 +1268,10 @@
// Chrome defines keys/values/entries on Array, but doesn't give us
// any way to identify its iterator. So add our own shimmed field.
if (Object.getPrototypeOf) {
addIterator(Object.getPrototypeOf([].values()));
var ChromeArrayIterator = Object.getPrototypeOf([].values());
if (ChromeArrayIterator) { // in WSH, this is `undefined`
addIterator(ChromeArrayIterator);
}
}

// note: this is positioned here because it relies on Array#entries
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