Bump to v3.0.0.

collection/map.js

@@ -0,0 +1,51 @@
+import arrayMap from '../internal/arrayMap';
+import baseCallback from '../internal/baseCallback';
+import baseMap from '../internal/baseMap';
+import isArray from '../lang/isArray';
+
+/**
+ * Creates an array of values by running each element in `collection` through
+ * `iteratee`. The `iteratee` is bound to `thisArg` and invoked with three
+ * arguments; (value, index|key, collection).
+ *
+ * If a property name is provided for `predicate` the created "_.property"
+ * style callback returns the property value of the given element.
+ *
+ * If an object is provided for `predicate` the created "_.matches" style
+ * callback returns `true` for elements that have the properties of the given
+ * object, else `false`.
+ *
+ * @static
+ * @memberOf _
+ * @alias collect
+ * @category Collection
+ * @param {Array|Object|string} collection The collection to iterate over.
+ * @param {Function|Object|string} [iteratee=_.identity] The function invoked
+ *  per iteration. If a property name or object is provided it is used to
+ *  create a "_.property" or "_.matches" style callback respectively.
+ * @param {*} [thisArg] The `this` binding of `iteratee`.
+ * @returns {Array} Returns the new mapped array.
+ * @example
+ *
+ * _.map([1, 2, 3], function(n) { return n * 3; });
+ * // => [3, 6, 9]
+ *
+ * _.map({ 'one': 1, 'two': 2, 'three': 3 }, function(n) { return n * 3; });
+ * // => [3, 6, 9] (iteration order is not guaranteed)
+ *
+ * var users = [
+ *   { 'user': 'barney' },
+ *   { 'user': 'fred' }
+ * ];
+ *
+ * // using the "_.property" callback shorthand
+ * _.map(users, 'user');
+ * // => ['barney', 'fred']
+ */
+function map(collection, iteratee, thisArg) {
+  var func = isArray(collection) ? arrayMap : baseMap;
+  iteratee = baseCallback(iteratee, thisArg, 3);
+  return func(collection, iteratee);
+}
+
+export default map;