/** * @description * Check whether `value` is `NaN`. * * @parameters * | name | type | description | * | :--: | :--: | ----------- | * | value | `any` | Value to test | * * @returns `boolean` * * @example * isNan(NaN) * // -> true * * isNan(40) * // -> false * * isNan('string') * // -> false * * isNan({}) * // -> false * * @since v1.0.0 * @tag types * @tag logic */ interface IsNan { (value: unknown): boolean } declare const isNan: IsNan export default isNan