| '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; | |
| }; |