Bump to v4.0.0.

intersection.js

@@ -0,0 +1,25 @@
+define(['./internal/arrayMap', './internal/baseIntersection', './rest', './internal/toArrayLikeObject'], function(arrayMap, baseIntersection, rest, toArrayLikeObject) {
+
+  /**
+   * Creates an array of unique values that are included in all of the provided
+   * arrays using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
+   * for equality comparisons.
+   *
+   * @static
+   * @memberOf _
+   * @category Array
+   * @param {...Array} [arrays] The arrays to inspect.
+   * @returns {Array} Returns the new array of shared values.
+   * @example
+   * _.intersection([2, 1], [4, 2], [1, 2]);
+   * // => [2]
+   */
+  var intersection = rest(function(arrays) {
+    var mapped = arrayMap(arrays, toArrayLikeObject);
+    return (mapped.length && mapped[0] === arrays[0])
+      ? baseIntersection(mapped)
+      : [];
+  });
+
+  return intersection;
+});