| /** | |
| * Checks if `value` is `undefined`. | |
| * | |
| * @static | |
| * @since 0.1.0 | |
| * @memberOf _ | |
| * @category Lang | |
| * @param {*} value The value to check. | |
| * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`. | |
| * @example | |
| * | |
| * _.isUndefined(void 0); | |
| * // => true | |
| * | |
| * _.isUndefined(null); | |
| * // => false | |
| */ | |
| function isUndefined(value) { | |
| return value === undefined; | |
| } | |
| module.exports = isUndefined; |