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21 lines
470 B
21 lines
470 B
'use strict'; |
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var GetIntrinsic = require('get-intrinsic'); |
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var $TypeError = GetIntrinsic('%TypeError%'); |
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var isNaN = require('../../helpers/isNaN'); |
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var Type = require('../Type'); |
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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 (Type(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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