'use strict';
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var define = require('define-properties');
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var getPolyfill = require('./polyfill');
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/* http://www.ecma-international.org/ecma-262/6.0/#sec-number.isnan */
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module.exports = function shimNumberIsNaN() {
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var polyfill = getPolyfill();
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define(Number, { isNaN: polyfill }, {
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isNaN: function testIsNaN() {
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return Number.isNaN !== polyfill;
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}
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});
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return polyfill;
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};
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