Bump to v3.0.0.

internal/createAggregator.js

@@ -0,0 +1,37 @@
+define(['./baseCallback', './baseEach', '../lang/isArray'], function(baseCallback, baseEach, isArray) {
+
+  /**
+   * Creates a function that aggregates a collection, creating an accumulator
+   * object composed from the results of running each element in the collection
+   * through an iteratee. The `setter` sets the keys and values of the accumulator
+   * object. If `initializer` is provided initializes the accumulator object.
+   *
+   * @private
+   * @param {Function} setter The function to set keys and values of the accumulator object.
+   * @param {Function} [initializer] The function to initialize the accumulator object.
+   * @returns {Function} Returns the new aggregator function.
+   */
+  function createAggregator(setter, initializer) {
+    return function(collection, iteratee, thisArg) {
+      var result = initializer ? initializer() : {};
+      iteratee = baseCallback(iteratee, thisArg, 3);
+
+      if (isArray(collection)) {
+        var index = -1,
+            length = collection.length;
+
+        while (++index < length) {
+          var value = collection[index];
+          setter(result, value, iteratee(value, index, collection), collection);
+        }
+      } else {
+        baseEach(collection, function(value, key, collection) {
+          setter(result, value, iteratee(value, key, collection), collection);
+        });
+      }
+      return result;
+    };
+  }
+
+  return createAggregator;
+});