2 * Checks if `value` is `undefined`.
8 * @param {*} value The value to check.
9 * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.
12 * _.isUndefined(void 0);
15 * _.isUndefined(null);
18 function isUndefined(value) {
19 return value === undefined;
22 module.exports = isUndefined;