1  /**
 2   * Checks if `value` is `undefined`.
 3   *
 4   * @static
 5   * @since 0.1.0
 6   * @memberOf _
 7   * @category Lang
 8   * @param {*} value The value to check.
 9   * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.
10   * @example
11   *
12   * _.isUndefined(void 0);
13   * // => true
14   *
15   * _.isUndefined(null);
16   * // => false
17   */
18  function isUndefined(value) {
19    return value === undefined;
20  }
21  
22  module.exports = isUndefined;