Bump to v4.0.0.

filter.js

@@ -0,0 +1,42 @@
+define(['./internal/arrayFilter', './internal/baseFilter', './internal/baseIteratee', './isArray'], function(arrayFilter, baseFilter, baseIteratee, isArray) {
+
+  /**
+   * Iterates over elements of `collection`, returning an array of all elements
+   * `predicate` returns truthy for. The predicate is invoked with three arguments:
+   * (value, index|key, collection).
+   *
+   * @static
+   * @memberOf _
+   * @category Collection
+   * @param {Array|Object} collection The collection to iterate over.
+   * @param {Function|Object|string} [predicate=_.identity] The function invoked per iteration.
+   * @returns {Array} Returns the new filtered array.
+   * @example
+   *
+   * var users = [
+   *   { 'user': 'barney', 'age': 36, 'active': true },
+   *   { 'user': 'fred',   'age': 40, 'active': false }
+   * ];
+   *
+   * _.filter(users, function(o) { return !o.active; });
+   * // => objects for ['fred']
+   *
+   * // using the `_.matches` iteratee shorthand
+   * _.filter(users, { 'age': 36, 'active': true });
+   * // => objects for ['barney']
+   *
+   * // using the `_.matchesProperty` iteratee shorthand
+   * _.filter(users, ['active', false]);
+   * // => objects for ['fred']
+   *
+   * // using the `_.property` iteratee shorthand
+   * _.filter(users, 'active');
+   * // => objects for ['barney']
+   */
+  function filter(collection, predicate) {
+    var func = isArray(collection) ? arrayFilter : baseFilter;
+    return func(collection, baseIteratee(predicate, 3));
+  }
+
+  return filter;
+});