| /*! |
| * 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 {Value} The value which has to be checked if it is NaN |
| * @name isNaN |
| * @api 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. |
| module.exports = Number.isNaN || isNaN; |
