Bump to v4.0.0.

zipWith.js

@@ -0,0 +1,33 @@
+define(['./rest', './unzipWith'], function(rest, unzipWith) {
+
+  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
+  var undefined;
+
+  /**
+   * This method is like `_.zip` except that it accepts `iteratee` to specify
+   * how grouped values should be combined. The iteratee is invoked with the
+   * elements of each group: (...group).
+   *
+   * @static
+   * @memberOf _
+   * @category Array
+   * @param {...Array} [arrays] The arrays to process.
+   * @param {Function} [iteratee=_.identity] The function to combine grouped values.
+   * @returns {Array} Returns the new array of grouped elements.
+   * @example
+   *
+   * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {
+   *   return a + b + c;
+   * });
+   * // => [111, 222]
+   */
+  var zipWith = rest(function(arrays) {
+    var length = arrays.length,
+        iteratee = length > 1 ? arrays[length - 1] : undefined;
+
+    iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;
+    return unzipWith(arrays, iteratee);
+  });
+
+  return zipWith;
+});