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