GoScrobble/web/node_modules/es-abstract/2020/Number/sameValueZero.js

25 lines
575 B
JavaScript

'use strict';
var GetIntrinsic = require('get-intrinsic');
var $TypeError = GetIntrinsic('%TypeError%');
var isNaN = require('../../helpers/isNaN');
var Type = require('../Type');
// https://262.ecma-international.org/11.0/#sec-numeric-types-number-sameValueZero
module.exports = function NumberSameValueZero(x, y) {
if (Type(x) !== 'Number' || Type(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;
};