Improve code quality and write tests

2019-09-20 21:54:46 +05:30
parent db44db4b97
commit 43178a7254
3597 changed files with 255478 additions and 785554 deletions
@@ -0,0 +1,22 @@
+/**
+ * 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;