securityos/node_modules/es-abstract/2020/Number/unaryMinus.js

18 lines
391 B
JavaScript

'use strict';
var $TypeError = require('es-errors/type');
var isNaN = require('../../helpers/isNaN');
// https://262.ecma-international.org/11.0/#sec-numeric-types-number-unaryMinus
module.exports = function NumberUnaryMinus(x) {
if (typeof x !== 'number') {
throw new $TypeError('Assertion failed: `x` argument must be a Number');
}
if (isNaN(x)) {
return NaN;
}
return -x;
};