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2d441493a4
PR-URL: https://github.com/nodejs/io.js/pull/2286 Reviewed-By: Roman Reiss <me@silverwind.io>
8 lines
170 B
JavaScript
8 lines
170 B
JavaScript
'use strict';
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var isWeakMap = require('./is-weak-map');
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module.exports = function (x) {
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if (!isWeakMap(x)) throw new TypeError(x + " is not a WeakMap");
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return x;
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};
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