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'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;
};