Bump to v4.1.0.

_baseMap.js

@@ -0,0 +1,22 @@
+define(['./_baseEach', './isArrayLike'], function(baseEach, isArrayLike) {
+
+  /**
+   * The base implementation of `_.map` without support for iteratee shorthands.
+   *
+   * @private
+   * @param {Array|Object} collection The collection to iterate over.
+   * @param {Function} iteratee The function invoked per iteration.
+   * @returns {Array} Returns the new mapped array.
+   */
+  function baseMap(collection, iteratee) {
+    var index = -1,
+        result = isArrayLike(collection) ? Array(collection.length) : [];
+
+    baseEach(collection, function(value, key, collection) {
+      result[++index] = iteratee(value, key, collection);
+    });
+    return result;
+  }
+
+  return baseMap;
+});