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Contents
/*!
* Chai - isNaN utility
* Copyright(c) 2012-2015 Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
* MIT Licensed
*/
/**
* ### .isNaN(value)
*
* Checks if the given value is NaN or not.
*
* utils.isNaN(NaN); // true
*
* @param {unknown} value The value which has to be checked if it is NaN
* @returns {boolean}
* @name isNaN
* @private
*/
function _isNaN(value) {
// Refer http://www.ecma-international.org/ecma-262/6.0/#sec-isnan-number
// section's NOTE.
return value !== value;
}
// If ECMAScript 6's Number.isNaN is present, prefer that.
export const isNaN = Number.isNaN || _isNaN;
Version data entries
26 entries across 26 versions & 1 rubygems