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- 'use strict';
- var $TypeError = require('es-errors/type');
- var isNaN = require('../../helpers/isNaN');
- // https://262.ecma-international.org/11.0/#sec-numeric-types-number-sameValueZero
- module.exports = function NumberSameValueZero(x, y) {
- if (typeof x !== 'number' || typeof y !== 'number') {
- throw new $TypeError('Assertion failed: `x` and `y` arguments must be Numbers');
- }
- var xNaN = isNaN(x);
- var yNaN = isNaN(y);
- if (xNaN || yNaN) {
- return xNaN === yNaN;
- }
- return x === y;
- };
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