9 lines
273 B
JavaScript
9 lines
273 B
JavaScript
// Exports true if environment provides native `WeakMap` implementation, whatever that is.
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"use strict";
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module.exports = (function () {
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if (typeof WeakMap !== "function") return false;
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return Object.prototype.toString.call(new WeakMap()) === "[object WeakMap]";
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}());
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