13 lines
371 B
JavaScript
13 lines
371 B
JavaScript
if (!window.WeakMap || !window.Promise) {
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window.unsupportedBrowser = true;
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} else {
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// Some implementations of `WeakMap.prototype.has` do not accept false
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// values and Ember's `isClassicDecorator` sometimes does that (it only
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// checks for `null` and `undefined`).
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try {
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new WeakMap().has(0);
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} catch (err) {
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window.unsupportedBrowser = true;
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}
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}
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