{"ast":null,"code":"import isNumber from './isNumber.js';\n\n/**\n * Checks if `value` is `NaN`.\n *\n * **Note:** This method is based on\n * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as\n * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for\n * `undefined` and other non-number values.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.\n * @example\n *\n * _.isNaN(NaN);\n * // => true\n *\n * _.isNaN(new Number(NaN));\n * // => true\n *\n * isNaN(undefined);\n * // => true\n *\n * _.isNaN(undefined);\n * // => false\n */\nfunction isNaN(value) {\n  // An `NaN` primitive is the only value that is not equal to itself.\n  // Perform the `toStringTag` check first to avoid errors with some\n  // ActiveX objects in IE.\n  return isNumber(value) && value != +value;\n}\nexport default isNaN;","map":null,"metadata":{},"sourceType":"module","externalDependencies":[]}