| /** |
| * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/> |
| * Build: `lodash modularize exports="node" -o ./compat/` |
| * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/> |
| * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE> |
| * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors |
| * Available under MIT license <http://lodash.com/license> |
| */ |
| var baseEach = require('./baseEach'), |
| createCallback = require('../functions/createCallback'), |
| isArray = require('../objects/isArray'); |
| |
| /** |
| * Creates a function that aggregates a collection, creating an object composed |
| * of keys generated from the results of running each element of the collection |
| * through a callback. The given `setter` function sets the keys and values |
| * of the composed object. |
| * |
| * @private |
| * @param {Function} setter The setter function. |
| * @returns {Function} Returns the new aggregator function. |
| */ |
| function createAggregator(setter) { |
| return function(collection, callback, thisArg) { |
| var result = {}; |
| callback = createCallback(callback, thisArg, 3); |
| |
| if (isArray(collection)) { |
| var index = -1, |
| length = collection.length; |
| |
| while (++index < length) { |
| var value = collection[index]; |
| setter(result, value, callback(value, index, collection), collection); |
| } |
| } else { |
| baseEach(collection, function(value, key, collection) { |
| setter(result, value, callback(value, key, collection), collection); |
| }); |
| } |
| return result; |
| }; |
| } |
| |
| module.exports = createAggregator; |