<!DOCTYPE html>
<html ng-app="ChatApp">
<head>
<script src="http://code.angularjs.org/1.2.0-rc.3/angular.js"></script>
<script src="https://cdn.goinstant.net/v1/platform.min.js"></script>
<script src="GoAngular.mod.js"></script>
<link rel="stylesheet" href="style.css" />
<script src="script.js"></script>
</head>
<body>
<div ng-controller="ChatCtrl">
Name: <input ng-model="message.user" type="text"/><br>
<div class="messages" scroll-glue ng-model="glued" style="height:300px;overflow:scroll;">
<div ng-repeat="message in messages track by $index">
<span ng-bind="message.user"></span>: <span ng-bind="message.text"></span>
</div>
</div>
<form ng-submit="sendMessage">
Message: <input ng-model="message.text" type="text"/>
<button type="submit" ng-click="sendMessage()">Send Message</button>
</form>
</div>
</body>
</html>
// Code goes here
angular.module('ChatApp', ['goinstant']).
config(function(platformProvider) {
platformProvider.set('https://goinstant.net/joshstrange/GoAngularDemo',{
guestId: null,
sessionId: null
});
});
angular.module('ChatApp').controller('ChatCtrl', function($scope, GoAngular) {
$scope.messages = [];
$scope.glued = true;
$scope.message = {
user: 'Guest '+Math.floor((Math.random()*100)),
text: ''
};
$scope.sendMessage = function() {
$scope.messages.push(angular.copy($scope.message));
$scope.message.text = '';
};
var goAngular = new GoAngular($scope, 'SyncCtrl', {
exclude: ['message']
});
// Begin synchronization
goAngular.initialize();
});
angular.module('ChatApp').directive('scrollGlue', function() {
return {
priority: 1,
require: ['?ngModel'],
restrict: 'A',
link: function(scope, $el, attrs, ctrls) {
var el = $el[0],
ngModel = ctrls[0];
function scrollToBottom() {
el.scrollTop = el.scrollHeight;
}
function shouldActivateAutoScroll() {
return el.scrollTop + el.clientHeight == el.scrollHeight;
}
scope.$watch(function() {
if (ngModel.$viewValue) {
scrollToBottom();
}
});
$el.bind('scroll', function() {
scope.$apply(ngModel.$setViewValue.bind(ngModel, shouldActivateAutoScroll()));
});
}
};
});
/* Styles go here */
;(function(){
/**
* Require the given path.
*
* @param {String} path
* @return {Object} exports
* @api public
*/
function require(path, parent, orig) {
var resolved = require.resolve(path);
// lookup failed
if (null == resolved) {
orig = orig || path;
parent = parent || 'root';
var err = new Error('Failed to require "' + orig + '" from "' + parent + '"');
err.path = orig;
err.parent = parent;
err.require = true;
throw err;
}
var module = require.modules[resolved];
// perform real require()
// by invoking the module's
// registered function
if (!module.exports) {
module.exports = {};
module.client = module.component = true;
module.call(this, module.exports, require.relative(resolved), module);
}
return module.exports;
}
/**
* Registered modules.
*/
require.modules = {};
/**
* Registered aliases.
*/
require.aliases = {};
/**
* Resolve `path`.
*
* Lookup:
*
* - PATH/index.js
* - PATH.js
* - PATH
*
* @param {String} path
* @return {String} path or null
* @api private
*/
require.resolve = function(path) {
if (path.charAt(0) === '/') path = path.slice(1);
var paths = [
path,
path + '.js',
path + '.json',
path + '/index.js',
path + '/index.json'
];
for (var i = 0; i < paths.length; i++) {
var path = paths[i];
if (require.modules.hasOwnProperty(path)) return path;
if (require.aliases.hasOwnProperty(path)) return require.aliases[path];
}
};
/**
* Normalize `path` relative to the current path.
*
* @param {String} curr
* @param {String} path
* @return {String}
* @api private
*/
require.normalize = function(curr, path) {
var segs = [];
if ('.' != path.charAt(0)) return path;
curr = curr.split('/');
path = path.split('/');
for (var i = 0; i < path.length; ++i) {
if ('..' == path[i]) {
curr.pop();
} else if ('.' != path[i] && '' != path[i]) {
segs.push(path[i]);
}
}
return curr.concat(segs).join('/');
};
/**
* Register module at `path` with callback `definition`.
*
* @param {String} path
* @param {Function} definition
* @api private
*/
require.register = function(path, definition) {
require.modules[path] = definition;
};
/**
* Alias a module definition.
*
* @param {String} from
* @param {String} to
* @api private
*/
require.alias = function(from, to) {
if (!require.modules.hasOwnProperty(from)) {
throw new Error('Failed to alias "' + from + '", it does not exist');
}
require.aliases[to] = from;
};
/**
* Return a require function relative to the `parent` path.
*
* @param {String} parent
* @return {Function}
* @api private
*/
require.relative = function(parent) {
var p = require.normalize(parent, '..');
/**
* lastIndexOf helper.
*/
function lastIndexOf(arr, obj) {
var i = arr.length;
while (i--) {
if (arr[i] === obj) return i;
}
return -1;
}
/**
* The relative require() itself.
*/
function localRequire(path) {
var resolved = localRequire.resolve(path);
return require(resolved, parent, path);
}
/**
* Resolve relative to the parent.
*/
localRequire.resolve = function(path) {
var c = path.charAt(0);
if ('/' == c) return path.slice(1);
if ('.' == c) return require.normalize(p, path);
// resolve deps by returning
// the dep in the nearest "deps"
// directory
var segs = parent.split('/');
var i = lastIndexOf(segs, 'deps') + 1;
if (!i) i = 0;
path = segs.slice(0, i + 1).join('/') + '/deps/' + path;
return path;
};
/**
* Check if module is defined at `path`.
*/
localRequire.exists = function(path) {
return require.modules.hasOwnProperty(localRequire.resolve(path));
};
return localRequire;
};
require.register("component-indexof/index.js", function(exports, require, module){
module.exports = function(arr, obj){
if (arr.indexOf) return arr.indexOf(obj);
for (var i = 0; i < arr.length; ++i) {
if (arr[i] === obj) return i;
}
return -1;
};
});
require.register("component-emitter/index.js", function(exports, require, module){
/**
* Module dependencies.
*/
var index = require('indexof');
/**
* Expose `Emitter`.
*/
module.exports = Emitter;
/**
* Initialize a new `Emitter`.
*
* @api public
*/
function Emitter(obj) {
if (obj) return mixin(obj);
};
/**
* Mixin the emitter properties.
*
* @param {Object} obj
* @return {Object}
* @api private
*/
function mixin(obj) {
for (var key in Emitter.prototype) {
obj[key] = Emitter.prototype[key];
}
return obj;
}
/**
* Listen on the given `event` with `fn`.
*
* @param {String} event
* @param {Function} fn
* @return {Emitter}
* @api public
*/
Emitter.prototype.on = function(event, fn){
this._callbacks = this._callbacks || {};
(this._callbacks[event] = this._callbacks[event] || [])
.push(fn);
return this;
};
/**
* Adds an `event` listener that will be invoked a single
* time then automatically removed.
*
* @param {String} event
* @param {Function} fn
* @return {Emitter}
* @api public
*/
Emitter.prototype.once = function(event, fn){
var self = this;
this._callbacks = this._callbacks || {};
function on() {
self.off(event, on);
fn.apply(this, arguments);
}
fn._off = on;
this.on(event, on);
return this;
};
/**
* Remove the given callback for `event` or all
* registered callbacks.
*
* @param {String} event
* @param {Function} fn
* @return {Emitter}
* @api public
*/
Emitter.prototype.off =
Emitter.prototype.removeListener =
Emitter.prototype.removeAllListeners = function(event, fn){
this._callbacks = this._callbacks || {};
// all
if (0 == arguments.length) {
this._callbacks = {};
return this;
}
// specific event
var callbacks = this._callbacks[event];
if (!callbacks) return this;
// remove all handlers
if (1 == arguments.length) {
delete this._callbacks[event];
return this;
}
// remove specific handler
var i = index(callbacks, fn._off || fn);
if (~i) callbacks.splice(i, 1);
return this;
};
/**
* Emit `event` with the given args.
*
* @param {String} event
* @param {Mixed} ...
* @return {Emitter}
*/
Emitter.prototype.emit = function(event){
this._callbacks = this._callbacks || {};
var args = [].slice.call(arguments, 1)
, callbacks = this._callbacks[event];
if (callbacks) {
callbacks = callbacks.slice(0);
for (var i = 0, len = callbacks.length; i < len; ++i) {
callbacks[i].apply(this, args);
}
}
return this;
};
/**
* Return array of callbacks for `event`.
*
* @param {String} event
* @return {Array}
* @api public
*/
Emitter.prototype.listeners = function(event){
this._callbacks = this._callbacks || {};
return this._callbacks[event] || [];
};
/**
* Check if this emitter has `event` handlers.
*
* @param {String} event
* @return {Boolean}
* @api public
*/
Emitter.prototype.hasListeners = function(event){
return !! this.listeners(event).length;
};
});
require.register("caolan-async/lib/async.js", function(exports, require, module){
/*global setImmediate: false, setTimeout: false, console: false */
(function () {
var async = {};
// global on the server, window in the browser
var root, previous_async;
root = this;
if (root != null) {
previous_async = root.async;
}
async.noConflict = function () {
root.async = previous_async;
return async;
};
function only_once(fn) {
var called = false;
return function() {
if (called) throw new Error("Callback was already called.");
called = true;
fn.apply(root, arguments);
}
}
//// cross-browser compatiblity functions ////
var _each = function (arr, iterator) {
if (arr.forEach) {
return arr.forEach(iterator);
}
for (var i = 0; i < arr.length; i += 1) {
iterator(arr[i], i, arr);
}
};
var _map = function (arr, iterator) {
if (arr.map) {
return arr.map(iterator);
}
var results = [];
_each(arr, function (x, i, a) {
results.push(iterator(x, i, a));
});
return results;
};
var _reduce = function (arr, iterator, memo) {
if (arr.reduce) {
return arr.reduce(iterator, memo);
}
_each(arr, function (x, i, a) {
memo = iterator(memo, x, i, a);
});
return memo;
};
var _keys = function (obj) {
if (Object.keys) {
return Object.keys(obj);
}
var keys = [];
for (var k in obj) {
if (obj.hasOwnProperty(k)) {
keys.push(k);
}
}
return keys;
};
//// exported async module functions ////
//// nextTick implementation with browser-compatible fallback ////
if (typeof process === 'undefined' || !(process.nextTick)) {
if (typeof setImmediate === 'function') {
async.nextTick = function (fn) {
// not a direct alias for IE10 compatibility
setImmediate(fn);
};
async.setImmediate = async.nextTick;
}
else {
async.nextTick = function (fn) {
setTimeout(fn, 0);
};
async.setImmediate = async.nextTick;
}
}
else {
async.nextTick = process.nextTick;
if (typeof setImmediate !== 'undefined') {
async.setImmediate = setImmediate;
}
else {
async.setImmediate = async.nextTick;
}
}
async.each = function (arr, iterator, callback) {
callback = callback || function () {};
if (!arr.length) {
return callback();
}
var completed = 0;
_each(arr, function (x) {
iterator(x, only_once(function (err) {
if (err) {
callback(err);
callback = function () {};
}
else {
completed += 1;
if (completed >= arr.length) {
callback(null);
}
}
}));
});
};
async.forEach = async.each;
async.eachSeries = function (arr, iterator, callback) {
callback = callback || function () {};
if (!arr.length) {
return callback();
}
var completed = 0;
var iterate = function () {
iterator(arr[completed], function (err) {
if (err) {
callback(err);
callback = function () {};
}
else {
completed += 1;
if (completed >= arr.length) {
callback(null);
}
else {
iterate();
}
}
});
};
iterate();
};
async.forEachSeries = async.eachSeries;
async.eachLimit = function (arr, limit, iterator, callback) {
var fn = _eachLimit(limit);
fn.apply(null, [arr, iterator, callback]);
};
async.forEachLimit = async.eachLimit;
var _eachLimit = function (limit) {
return function (arr, iterator, callback) {
callback = callback || function () {};
if (!arr.length || limit <= 0) {
return callback();
}
var completed = 0;
var started = 0;
var running = 0;
(function replenish () {
if (completed >= arr.length) {
return callback();
}
while (running < limit && started < arr.length) {
started += 1;
running += 1;
iterator(arr[started - 1], function (err) {
if (err) {
callback(err);
callback = function () {};
}
else {
completed += 1;
running -= 1;
if (completed >= arr.length) {
callback();
}
else {
replenish();
}
}
});
}
})();
};
};
var doParallel = function (fn) {
return function () {
var args = Array.prototype.slice.call(arguments);
return fn.apply(null, [async.each].concat(args));
};
};
var doParallelLimit = function(limit, fn) {
return function () {
var args = Array.prototype.slice.call(arguments);
return fn.apply(null, [_eachLimit(limit)].concat(args));
};
};
var doSeries = function (fn) {
return function () {
var args = Array.prototype.slice.call(arguments);
return fn.apply(null, [async.eachSeries].concat(args));
};
};
var _asyncMap = function (eachfn, arr, iterator, callback) {
var results = [];
arr = _map(arr, function (x, i) {
return {index: i, value: x};
});
eachfn(arr, function (x, callback) {
iterator(x.value, function (err, v) {
results[x.index] = v;
callback(err);
});
}, function (err) {
callback(err, results);
});
};
async.map = doParallel(_asyncMap);
async.mapSeries = doSeries(_asyncMap);
async.mapLimit = function (arr, limit, iterator, callback) {
return _mapLimit(limit)(arr, iterator, callback);
};
var _mapLimit = function(limit) {
return doParallelLimit(limit, _asyncMap);
};
// reduce only has a series version, as doing reduce in parallel won't
// work in many situations.
async.reduce = function (arr, memo, iterator, callback) {
async.eachSeries(arr, function (x, callback) {
iterator(memo, x, function (err, v) {
memo = v;
callback(err);
});
}, function (err) {
callback(err, memo);
});
};
// inject alias
async.inject = async.reduce;
// foldl alias
async.foldl = async.reduce;
async.reduceRight = function (arr, memo, iterator, callback) {
var reversed = _map(arr, function (x) {
return x;
}).reverse();
async.reduce(reversed, memo, iterator, callback);
};
// foldr alias
async.foldr = async.reduceRight;
var _filter = function (eachfn, arr, iterator, callback) {
var results = [];
arr = _map(arr, function (x, i) {
return {index: i, value: x};
});
eachfn(arr, function (x, callback) {
iterator(x.value, function (v) {
if (v) {
results.push(x);
}
callback();
});
}, function (err) {
callback(_map(results.sort(function (a, b) {
return a.index - b.index;
}), function (x) {
return x.value;
}));
});
};
async.filter = doParallel(_filter);
async.filterSeries = doSeries(_filter);
// select alias
async.select = async.filter;
async.selectSeries = async.filterSeries;
var _reject = function (eachfn, arr, iterator, callback) {
var results = [];
arr = _map(arr, function (x, i) {
return {index: i, value: x};
});
eachfn(arr, function (x, callback) {
iterator(x.value, function (v) {
if (!v) {
results.push(x);
}
callback();
});
}, function (err) {
callback(_map(results.sort(function (a, b) {
return a.index - b.index;
}), function (x) {
return x.value;
}));
});
};
async.reject = doParallel(_reject);
async.rejectSeries = doSeries(_reject);
var _detect = function (eachfn, arr, iterator, main_callback) {
eachfn(arr, function (x, callback) {
iterator(x, function (result) {
if (result) {
main_callback(x);
main_callback = function () {};
}
else {
callback();
}
});
}, function (err) {
main_callback();
});
};
async.detect = doParallel(_detect);
async.detectSeries = doSeries(_detect);
async.some = function (arr, iterator, main_callback) {
async.each(arr, function (x, callback) {
iterator(x, function (v) {
if (v) {
main_callback(true);
main_callback = function () {};
}
callback();
});
}, function (err) {
main_callback(false);
});
};
// any alias
async.any = async.some;
async.every = function (arr, iterator, main_callback) {
async.each(arr, function (x, callback) {
iterator(x, function (v) {
if (!v) {
main_callback(false);
main_callback = function () {};
}
callback();
});
}, function (err) {
main_callback(true);
});
};
// all alias
async.all = async.every;
async.sortBy = function (arr, iterator, callback) {
async.map(arr, function (x, callback) {
iterator(x, function (err, criteria) {
if (err) {
callback(err);
}
else {
callback(null, {value: x, criteria: criteria});
}
});
}, function (err, results) {
if (err) {
return callback(err);
}
else {
var fn = function (left, right) {
var a = left.criteria, b = right.criteria;
return a < b ? -1 : a > b ? 1 : 0;
};
callback(null, _map(results.sort(fn), function (x) {
return x.value;
}));
}
});
};
async.auto = function (tasks, callback) {
callback = callback || function () {};
var keys = _keys(tasks);
if (!keys.length) {
return callback(null);
}
var results = {};
var listeners = [];
var addListener = function (fn) {
listeners.unshift(fn);
};
var removeListener = function (fn) {
for (var i = 0; i < listeners.length; i += 1) {
if (listeners[i] === fn) {
listeners.splice(i, 1);
return;
}
}
};
var taskComplete = function () {
_each(listeners.slice(0), function (fn) {
fn();
});
};
addListener(function () {
if (_keys(results).length === keys.length) {
callback(null, results);
callback = function () {};
}
});
_each(keys, function (k) {
var task = (tasks[k] instanceof Function) ? [tasks[k]]: tasks[k];
var taskCallback = function (err) {
var args = Array.prototype.slice.call(arguments, 1);
if (args.length <= 1) {
args = args[0];
}
if (err) {
var safeResults = {};
_each(_keys(results), function(rkey) {
safeResults[rkey] = results[rkey];
});
safeResults[k] = args;
callback(err, safeResults);
// stop subsequent errors hitting callback multiple times
callback = function () {};
}
else {
results[k] = args;
async.setImmediate(taskComplete);
}
};
var requires = task.slice(0, Math.abs(task.length - 1)) || [];
var ready = function () {
return _reduce(requires, function (a, x) {
return (a && results.hasOwnProperty(x));
}, true) && !results.hasOwnProperty(k);
};
if (ready()) {
task[task.length - 1](taskCallback, results);
}
else {
var listener = function () {
if (ready()) {
removeListener(listener);
task[task.length - 1](taskCallback, results);
}
};
addListener(listener);
}
});
};
async.waterfall = function (tasks, callback) {
callback = callback || function () {};
if (tasks.constructor !== Array) {
var err = new Error('First argument to waterfall must be an array of functions');
return callback(err);
}
if (!tasks.length) {
return callback();
}
var wrapIterator = function (iterator) {
return function (err) {
if (err) {
callback.apply(null, arguments);
callback = function () {};
}
else {
var args = Array.prototype.slice.call(arguments, 1);
var next = iterator.next();
if (next) {
args.push(wrapIterator(next));
}
else {
args.push(callback);
}
async.setImmediate(function () {
iterator.apply(null, args);
});
}
};
};
wrapIterator(async.iterator(tasks))();
};
var _parallel = function(eachfn, tasks, callback) {
callback = callback || function () {};
if (tasks.constructor === Array) {
eachfn.map(tasks, function (fn, callback) {
if (fn) {
fn(function (err) {
var args = Array.prototype.slice.call(arguments, 1);
if (args.length <= 1) {
args = args[0];
}
callback.call(null, err, args);
});
}
}, callback);
}
else {
var results = {};
eachfn.each(_keys(tasks), function (k, callback) {
tasks[k](function (err) {
var args = Array.prototype.slice.call(arguments, 1);
if (args.length <= 1) {
args = args[0];
}
results[k] = args;
callback(err);
});
}, function (err) {
callback(err, results);
});
}
};
async.parallel = function (tasks, callback) {
_parallel({ map: async.map, each: async.each }, tasks, callback);
};
async.parallelLimit = function(tasks, limit, callback) {
_parallel({ map: _mapLimit(limit), each: _eachLimit(limit) }, tasks, callback);
};
async.series = function (tasks, callback) {
callback = callback || function () {};
if (tasks.constructor === Array) {
async.mapSeries(tasks, function (fn, callback) {
if (fn) {
fn(function (err) {
var args = Array.prototype.slice.call(arguments, 1);
if (args.length <= 1) {
args = args[0];
}
callback.call(null, err, args);
});
}
}, callback);
}
else {
var results = {};
async.eachSeries(_keys(tasks), function (k, callback) {
tasks[k](function (err) {
var args = Array.prototype.slice.call(arguments, 1);
if (args.length <= 1) {
args = args[0];
}
results[k] = args;
callback(err);
});
}, function (err) {
callback(err, results);
});
}
};
async.iterator = function (tasks) {
var makeCallback = function (index) {
var fn = function () {
if (tasks.length) {
tasks[index].apply(null, arguments);
}
return fn.next();
};
fn.next = function () {
return (index < tasks.length - 1) ? makeCallback(index + 1): null;
};
return fn;
};
return makeCallback(0);
};
async.apply = function (fn) {
var args = Array.prototype.slice.call(arguments, 1);
return function () {
return fn.apply(
null, args.concat(Array.prototype.slice.call(arguments))
);
};
};
var _concat = function (eachfn, arr, fn, callback) {
var r = [];
eachfn(arr, function (x, cb) {
fn(x, function (err, y) {
r = r.concat(y || []);
cb(err);
});
}, function (err) {
callback(err, r);
});
};
async.concat = doParallel(_concat);
async.concatSeries = doSeries(_concat);
async.whilst = function (test, iterator, callback) {
if (test()) {
iterator(function (err) {
if (err) {
return callback(err);
}
async.whilst(test, iterator, callback);
});
}
else {
callback();
}
};
async.doWhilst = function (iterator, test, callback) {
iterator(function (err) {
if (err) {
return callback(err);
}
if (test()) {
async.doWhilst(iterator, test, callback);
}
else {
callback();
}
});
};
async.until = function (test, iterator, callback) {
if (!test()) {
iterator(function (err) {
if (err) {
return callback(err);
}
async.until(test, iterator, callback);
});
}
else {
callback();
}
};
async.doUntil = function (iterator, test, callback) {
iterator(function (err) {
if (err) {
return callback(err);
}
if (!test()) {
async.doUntil(iterator, test, callback);
}
else {
callback();
}
});
};
async.queue = function (worker, concurrency) {
if (concurrency === undefined) {
concurrency = 1;
}
function _insert(q, data, pos, callback) {
if(data.constructor !== Array) {
data = [data];
}
_each(data, function(task) {
var item = {
data: task,
callback: typeof callback === 'function' ? callback : null
};
if (pos) {
q.tasks.unshift(item);
} else {
q.tasks.push(item);
}
if (q.saturated && q.tasks.length === concurrency) {
q.saturated();
}
async.setImmediate(q.process);
});
}
var workers = 0;
var q = {
tasks: [],
concurrency: concurrency,
saturated: null,
empty: null,
drain: null,
push: function (data, callback) {
_insert(q, data, false, callback);
},
unshift: function (data, callback) {
_insert(q, data, true, callback);
},
process: function () {
if (workers < q.concurrency && q.tasks.length) {
var task = q.tasks.shift();
if (q.empty && q.tasks.length === 0) {
q.empty();
}
workers += 1;
var next = function () {
workers -= 1;
if (task.callback) {
task.callback.apply(task, arguments);
}
if (q.drain && q.tasks.length + workers === 0) {
q.drain();
}
q.process();
};
var cb = only_once(next);
worker(task.data, cb);
}
},
length: function () {
return q.tasks.length;
},
running: function () {
return workers;
}
};
return q;
};
async.cargo = function (worker, payload) {
var working = false,
tasks = [];
var cargo = {
tasks: tasks,
payload: payload,
saturated: null,
empty: null,
drain: null,
push: function (data, callback) {
if(data.constructor !== Array) {
data = [data];
}
_each(data, function(task) {
tasks.push({
data: task,
callback: typeof callback === 'function' ? callback : null
});
if (cargo.saturated && tasks.length === payload) {
cargo.saturated();
}
});
async.setImmediate(cargo.process);
},
process: function process() {
if (working) return;
if (tasks.length === 0) {
if(cargo.drain) cargo.drain();
return;
}
var ts = typeof payload === 'number'
? tasks.splice(0, payload)
: tasks.splice(0);
var ds = _map(ts, function (task) {
return task.data;
});
if(cargo.empty) cargo.empty();
working = true;
worker(ds, function () {
working = false;
var args = arguments;
_each(ts, function (data) {
if (data.callback) {
data.callback.apply(null, args);
}
});
process();
});
},
length: function () {
return tasks.length;
},
running: function () {
return working;
}
};
return cargo;
};
var _console_fn = function (name) {
return function (fn) {
var args = Array.prototype.slice.call(arguments, 1);
fn.apply(null, args.concat([function (err) {
var args = Array.prototype.slice.call(arguments, 1);
if (typeof console !== 'undefined') {
if (err) {
if (console.error) {
console.error(err);
}
}
else if (console[name]) {
_each(args, function (x) {
console[name](x);
});
}
}
}]));
};
};
async.log = _console_fn('log');
async.dir = _console_fn('dir');
/*async.info = _console_fn('info');
async.warn = _console_fn('warn');
async.error = _console_fn('error');*/
async.memoize = function (fn, hasher) {
var memo = {};
var queues = {};
hasher = hasher || function (x) {
return x;
};
var memoized = function () {
var args = Array.prototype.slice.call(arguments);
var callback = args.pop();
var key = hasher.apply(null, args);
if (key in memo) {
callback.apply(null, memo[key]);
}
else if (key in queues) {
queues[key].push(callback);
}
else {
queues[key] = [callback];
fn.apply(null, args.concat([function () {
memo[key] = arguments;
var q = queues[key];
delete queues[key];
for (var i = 0, l = q.length; i < l; i++) {
q[i].apply(null, arguments);
}
}]));
}
};
memoized.memo = memo;
memoized.unmemoized = fn;
return memoized;
};
async.unmemoize = function (fn) {
return function () {
return (fn.unmemoized || fn).apply(null, arguments);
};
};
async.times = function (count, iterator, callback) {
var counter = [];
for (var i = 0; i < count; i++) {
counter.push(i);
}
return async.map(counter, iterator, callback);
};
async.timesSeries = function (count, iterator, callback) {
var counter = [];
for (var i = 0; i < count; i++) {
counter.push(i);
}
return async.mapSeries(counter, iterator, callback);
};
async.compose = function (/* functions... */) {
var fns = Array.prototype.reverse.call(arguments);
return function () {
var that = this;
var args = Array.prototype.slice.call(arguments);
var callback = args.pop();
async.reduce(fns, args, function (newargs, fn, cb) {
fn.apply(that, newargs.concat([function () {
var err = arguments[0];
var nextargs = Array.prototype.slice.call(arguments, 1);
cb(err, nextargs);
}]))
},
function (err, results) {
callback.apply(that, [err].concat(results));
});
};
};
var _applyEach = function (eachfn, fns /*args...*/) {
var go = function () {
var that = this;
var args = Array.prototype.slice.call(arguments);
var callback = args.pop();
return eachfn(fns, function (fn, cb) {
fn.apply(that, args.concat([cb]));
},
callback);
};
if (arguments.length > 2) {
var args = Array.prototype.slice.call(arguments, 2);
return go.apply(this, args);
}
else {
return go;
}
};
async.applyEach = doParallel(_applyEach);
async.applyEachSeries = doSeries(_applyEach);
async.forever = function (fn, callback) {
function next(err) {
if (err) {
if (callback) {
return callback(err);
}
throw err;
}
fn(next);
}
next();
};
// AMD / RequireJS
if (typeof define !== 'undefined' && define.amd) {
define([], function () {
return async;
});
}
// Node.js
else if (typeof module !== 'undefined' && module.exports) {
module.exports = async;
}
// included directly via <script> tag
else {
root.async = async;
}
}());
});
require.register("lodash-lodash/index.js", function(exports, require, module){
module.exports = require('./dist/lodash.compat.js');
});
require.register("lodash-lodash/dist/lodash.compat.js", function(exports, require, module){
/**
* @license
* Lo-Dash 2.1.0 (Custom Build) <http://lodash.com/>
* Build: `lodash -o ./dist/lodash.compat.js`
* 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>
*/
;(function() {
/** Used as a safe reference for `undefined` in pre ES5 environments */
var undefined;
/** Used to pool arrays and objects used internally */
var arrayPool = [],
objectPool = [];
/** Used to generate unique IDs */
var idCounter = 0;
/** Used internally to indicate various things */
var indicatorObject = {};
/** Used to prefix keys to avoid issues with `__proto__` and properties on `Object.prototype` */
var keyPrefix = +new Date + '';
/** Used as the size when optimizations are enabled for large arrays */
var largeArraySize = 75;
/** Used as the max size of the `arrayPool` and `objectPool` */
var maxPoolSize = 40;
/** Used to detect and test whitespace */
var whitespace = (
// whitespace
' \t\x0B\f\xA0\ufeff' +
// line terminators
'\n\r\u2028\u2029' +
// unicode category "Zs" space separators
'\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000'
);
/** Used to match empty string literals in compiled template source */
var reEmptyStringLeading = /\b__p \+= '';/g,
reEmptyStringMiddle = /\b(__p \+=) '' \+/g,
reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g;
/**
* Used to match ES6 template delimiters
* http://people.mozilla.org/~jorendorff/es6-draft.html#sec-7.8.6
*/
var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g;
/** Used to match regexp flags from their coerced string values */
var reFlags = /\w*$/;
/** Used to detected named functions */
var reFuncName = /^function[ \n\r\t]+\w/;
/** Used to match "interpolate" template delimiters */
var reInterpolate = /<%=([\s\S]+?)%>/g;
/** Used to match leading whitespace and zeros to be removed */
var reLeadingSpacesAndZeros = RegExp('^[' + whitespace + ']*0+(?=.$)');
/** Used to ensure capturing order of template delimiters */
var reNoMatch = /($^)/;
/** Used to detect functions containing a `this` reference */
var reThis = /\bthis\b/;
/** Used to match unescaped characters in compiled string literals */
var reUnescapedString = /['\n\r\t\u2028\u2029\\]/g;
/** Used to assign default `context` object properties */
var contextProps = [
'Array', 'Boolean', 'Date', 'Error', 'Function', 'Math', 'Number', 'Object',
'RegExp', 'String', '_', 'attachEvent', 'clearTimeout', 'isFinite', 'isNaN',
'parseInt', 'setImmediate', 'setTimeout'
];
/** Used to fix the JScript [[DontEnum]] bug */
var shadowedProps = [
'constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable',
'toLocaleString', 'toString', 'valueOf'
];
/** Used to make template sourceURLs easier to identify */
var templateCounter = 0;
/** `Object#toString` result shortcuts */
var argsClass = '[object Arguments]',
arrayClass = '[object Array]',
boolClass = '[object Boolean]',
dateClass = '[object Date]',
errorClass = '[object Error]',
funcClass = '[object Function]',
numberClass = '[object Number]',
objectClass = '[object Object]',
regexpClass = '[object RegExp]',
stringClass = '[object String]';
/** Used to identify object classifications that `_.clone` supports */
var cloneableClasses = {};
cloneableClasses[funcClass] = false;
cloneableClasses[argsClass] = cloneableClasses[arrayClass] =
cloneableClasses[boolClass] = cloneableClasses[dateClass] =
cloneableClasses[numberClass] = cloneableClasses[objectClass] =
cloneableClasses[regexpClass] = cloneableClasses[stringClass] = true;
/** Used to determine if values are of the language type Object */
var objectTypes = {
'boolean': false,
'function': true,
'object': true,
'number': false,
'string': false,
'undefined': false
};
/** Used to escape characters for inclusion in compiled string literals */
var stringEscapes = {
'\\': '\\',
"'": "'",
'\n': 'n',
'\r': 'r',
'\t': 't',
'\u2028': 'u2028',
'\u2029': 'u2029'
};
/** Used as a reference to the global object */
var root = (objectTypes[typeof window] && window) || this;
/** Detect free variable `exports` */
var freeExports = objectTypes[typeof exports] && exports && !exports.nodeType && exports;
/** Detect free variable `module` */
var freeModule = objectTypes[typeof module] && module && !module.nodeType && module;
/** Detect the popular CommonJS extension `module.exports` */
var moduleExports = freeModule && freeModule.exports === freeExports && freeExports;
/** Detect free variable `global` from Node.js or Browserified code and use it as `root` */
var freeGlobal = objectTypes[typeof global] && global;
if (freeGlobal && (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal)) {
root = freeGlobal;
}
/*--------------------------------------------------------------------------*/
/**
* The base implementation of `_.indexOf` without support for binary searches
* or `fromIndex` constraints.
*
* @private
* @param {Array} array The array to search.
* @param {*} value The value to search for.
* @param {number} [fromIndex=0] The index to search from.
* @returns {number} Returns the index of the matched value or `-1`.
*/
function baseIndexOf(array, value, fromIndex) {
var index = (fromIndex || 0) - 1,
length = array ? array.length : 0;
while (++index < length) {
if (array[index] === value) {
return index;
}
}
return -1;
}
/**
* An implementation of `_.contains` for cache objects that mimics the return
* signature of `_.indexOf` by returning `0` if the value is found, else `-1`.
*
* @private
* @param {Object} cache The cache object to inspect.
* @param {*} value The value to search for.
* @returns {number} Returns `0` if `value` is found, else `-1`.
*/
function cacheIndexOf(cache, value) {
var type = typeof value;
cache = cache.cache;
if (type == 'boolean' || value == null) {
return cache[value] ? 0 : -1;
}
if (type != 'number' && type != 'string') {
type = 'object';
}
var key = type == 'number' ? value : keyPrefix + value;
cache = (cache = cache[type]) && cache[key];
return type == 'object'
? (cache && baseIndexOf(cache, value) > -1 ? 0 : -1)
: (cache ? 0 : -1);
}
/**
* Adds a given value to the corresponding cache object.
*
* @private
* @param {*} value The value to add to the cache.
*/
function cachePush(value) {
var cache = this.cache,
type = typeof value;
if (type == 'boolean' || value == null) {
cache[value] = true;
} else {
if (type != 'number' && type != 'string') {
type = 'object';
}
var key = type == 'number' ? value : keyPrefix + value,
typeCache = cache[type] || (cache[type] = {});
if (type == 'object') {
(typeCache[key] || (typeCache[key] = [])).push(value);
} else {
typeCache[key] = true;
}
}
}
/**
* Used by `_.max` and `_.min` as the default callback when a given
* collection is a string value.
*
* @private
* @param {string} value The character to inspect.
* @returns {number} Returns the code unit of given character.
*/
function charAtCallback(value) {
return value.charCodeAt(0);
}
/**
* Used by `sortBy` to compare transformed `collection` elements, stable sorting
* them in ascending order.
*
* @private
* @param {Object} a The object to compare to `b`.
* @param {Object} b The object to compare to `a`.
* @returns {number} Returns the sort order indicator of `1` or `-1`.
*/
function compareAscending(a, b) {
var ac = a.criteria,
bc = b.criteria;
// ensure a stable sort in V8 and other engines
// http://code.google.com/p/v8/issues/detail?id=90
if (ac !== bc) {
if (ac > bc || typeof ac == 'undefined') {
return 1;
}
if (ac < bc || typeof bc == 'undefined') {
return -1;
}
}
// The JS engine embedded in Adobe applications like InDesign has a buggy
// `Array#sort` implementation that causes it, under certain circumstances,
// to return the same value for `a` and `b`.
// See https://github.com/jashkenas/underscore/pull/1247
return a.index - b.index;
}
/**
* Creates a cache object to optimize linear searches of large arrays.
*
* @private
* @param {Array} [array=[]] The array to search.
* @returns {null|Object} Returns the cache object or `null` if caching should not be used.
*/
function createCache(array) {
var index = -1,
length = array.length,
first = array[0],
mid = array[(length / 2) | 0],
last = array[length - 1];
if (first && typeof first == 'object' &&
mid && typeof mid == 'object' && last && typeof last == 'object') {
return false;
}
var cache = getObject();
cache['false'] = cache['null'] = cache['true'] = cache['undefined'] = false;
var result = getObject();
result.array = array;
result.cache = cache;
result.push = cachePush;
while (++index < length) {
result.push(array[index]);
}
return result;
}
/**
* Used by `template` to escape characters for inclusion in compiled
* string literals.
*
* @private
* @param {string} match The matched character to escape.
* @returns {string} Returns the escaped character.
*/
function escapeStringChar(match) {
return '\\' + stringEscapes[match];
}
/**
* Gets an array from the array pool or creates a new one if the pool is empty.
*
* @private
* @returns {Array} The array from the pool.
*/
function getArray() {
return arrayPool.pop() || [];
}
/**
* Gets an object from the object pool or creates a new one if the pool is empty.
*
* @private
* @returns {Object} The object from the pool.
*/
function getObject() {
return objectPool.pop() || {
'args': '',
'array': null,
'bottom': '',
'cache': null,
'configurable': false,
'criteria': null,
'enumerable': false,
'false': false,
'firstArg': '',
'index': 0,
'init': '',
'keys': null,
'leading': false,
'loop': '',
'maxWait': 0,
'null': false,
'number': null,
'object': null,
'push': null,
'shadowedProps': null,
'string': null,
'top': '',
'trailing': false,
'true': false,
'undefined': false,
'useHas': false,
'value': null,
'writable': false
};
}
/**
* Checks if `value` is a DOM node in IE < 9.
*
* @private
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if the `value` is a DOM node, else `false`.
*/
function isNode(value) {
// IE < 9 presents DOM nodes as `Object` objects except they have `toString`
// methods that are `typeof` "string" and still can coerce nodes to strings
return typeof value.toString != 'function' && typeof (value + '') == 'string';
}
/**
* A no-operation function.
*
* @private
*/
function noop() {
// no operation performed
}
/**
* Releases the given array back to the array pool.
*
* @private
* @param {Array} [array] The array to release.
*/
function releaseArray(array) {
array.length = 0;
if (arrayPool.length < maxPoolSize) {
arrayPool.push(array);
}
}
/**
* Releases the given object back to the object pool.
*
* @private
* @param {Object} [object] The object to release.
*/
function releaseObject(object) {
var cache = object.cache;
if (cache) {
releaseObject(cache);
}
object.array = object.cache = object.criteria = object.object = object.number = object.string = object.value = null;
if (objectPool.length < maxPoolSize) {
objectPool.push(object);
}
}
/**
* Slices the `collection` from the `start` index up to, but not including,
* the `end` index.
*
* Note: This function is used instead of `Array#slice` to support node lists
* in IE < 9 and to ensure dense arrays are returned.
*
* @private
* @param {Array|Object|string} collection The collection to slice.
* @param {number} start The start index.
* @param {number} end The end index.
* @returns {Array} Returns the new array.
*/
function slice(array, start, end) {
start || (start = 0);
if (typeof end == 'undefined') {
end = array ? array.length : 0;
}
var index = -1,
length = end - start || 0,
result = Array(length < 0 ? 0 : length);
while (++index < length) {
result[index] = array[start + index];
}
return result;
}
/*--------------------------------------------------------------------------*/
/**
* Create a new `lodash` function using the given context object.
*
* @static
* @memberOf _
* @category Utilities
* @param {Object} [context=root] The context object.
* @returns {Function} Returns the `lodash` function.
*/
function runInContext(context) {
// Avoid issues with some ES3 environments that attempt to use values, named
// after built-in constructors like `Object`, for the creation of literals.
// ES5 clears this up by stating that literals must use built-in constructors.
// See http://es5.github.io/#x11.1.5.
context = context ? _.defaults(root.Object(), context, _.pick(root, contextProps)) : root;
/** Native constructor references */
var Array = context.Array,
Boolean = context.Boolean,
Date = context.Date,
Error = context.Error,
Function = context.Function,
Math = context.Math,
Number = context.Number,
Object = context.Object,
RegExp = context.RegExp,
String = context.String,
TypeError = context.TypeError;
/**
* Used for `Array` method references.
*
* Normally `Array.prototype` would suffice, however, using an array literal
* avoids issues in Narwhal.
*/
var arrayRef = [];
/** Used for native method references */
var errorProto = Error.prototype,
objectProto = Object.prototype,
stringProto = String.prototype;
/** Used to restore the original `_` reference in `noConflict` */
var oldDash = context._;
/** Used to detect if a method is native */
var reNative = RegExp('^' +
String(objectProto.valueOf)
.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')
.replace(/valueOf|for [^\]]+/g, '.+?') + '$'
);
/** Native method shortcuts */
var ceil = Math.ceil,
clearTimeout = context.clearTimeout,
floor = Math.floor,
fnToString = Function.prototype.toString,
getPrototypeOf = reNative.test(getPrototypeOf = Object.getPrototypeOf) && getPrototypeOf,
hasOwnProperty = objectProto.hasOwnProperty,
push = arrayRef.push,
propertyIsEnumerable = objectProto.propertyIsEnumerable,
setImmediate = context.setImmediate,
setTimeout = context.setTimeout,
splice = arrayRef.splice,
toString = objectProto.toString,
unshift = arrayRef.unshift;
var defineProperty = (function() {
try {
var o = {},
func = reNative.test(func = Object.defineProperty) && func,
result = func(o, o, o) && func;
} catch(e) { }
return result;
}());
/* Native method shortcuts for methods with the same name as other `lodash` methods */
var nativeBind = reNative.test(nativeBind = toString.bind) && nativeBind,
nativeCreate = reNative.test(nativeCreate = Object.create) && nativeCreate,
nativeIsArray = reNative.test(nativeIsArray = Array.isArray) && nativeIsArray,
nativeIsFinite = context.isFinite,
nativeIsNaN = context.isNaN,
nativeKeys = reNative.test(nativeKeys = Object.keys) && nativeKeys,
nativeMax = Math.max,
nativeMin = Math.min,
nativeParseInt = context.parseInt,
nativeRandom = Math.random,
nativeSlice = arrayRef.slice;
/** Detect various environments */
var isIeOpera = reNative.test(context.attachEvent),
isV8 = nativeBind && !/\n|true/.test(nativeBind + isIeOpera);
/** Used to lookup a built-in constructor by [[Class]] */
var ctorByClass = {};
ctorByClass[arrayClass] = Array;
ctorByClass[boolClass] = Boolean;
ctorByClass[dateClass] = Date;
ctorByClass[funcClass] = Function;
ctorByClass[objectClass] = Object;
ctorByClass[numberClass] = Number;
ctorByClass[regexpClass] = RegExp;
ctorByClass[stringClass] = String;
/** Used to avoid iterating non-enumerable properties in IE < 9 */
var nonEnumProps = {};
nonEnumProps[arrayClass] = nonEnumProps[dateClass] = nonEnumProps[numberClass] = { 'constructor': true, 'toLocaleString': true, 'toString': true, 'valueOf': true };
nonEnumProps[boolClass] = nonEnumProps[stringClass] = { 'constructor': true, 'toString': true, 'valueOf': true };
nonEnumProps[errorClass] = nonEnumProps[funcClass] = nonEnumProps[regexpClass] = { 'constructor': true, 'toString': true };
nonEnumProps[objectClass] = { 'constructor': true };
(function() {
var length = shadowedProps.length;
while (length--) {
var prop = shadowedProps[length];
for (var className in nonEnumProps) {
if (hasOwnProperty.call(nonEnumProps, className) && !hasOwnProperty.call(nonEnumProps[className], prop)) {
nonEnumProps[className][prop] = false;
}
}
}
}());
/*--------------------------------------------------------------------------*/
/**
* Creates a `lodash` object which wraps the given value to enable method
* chaining.
*
* In addition to Lo-Dash methods, wrappers also have the following `Array` methods:
* `concat`, `join`, `pop`, `push`, `reverse`, `shift`, `slice`, `sort`, `splice`,
* and `unshift`
*
* Chaining is supported in custom builds as long as the `value` method is
* implicitly or explicitly included in the build.
*
* The chainable wrapper functions are:
* `after`, `assign`, `bind`, `bindAll`, `bindKey`, `chain`, `compact`,
* `compose`, `concat`, `countBy`, `createCallback`, `curry`, `debounce`,
* `defaults`, `defer`, `delay`, `difference`, `filter`, `flatten`, `forEach`,
* `forEachRight`, `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `functions`,
* `groupBy`, `indexBy`, `initial`, `intersection`, `invert`, `invoke`, `keys`,
* `map`, `max`, `memoize`, `merge`, `min`, `object`, `omit`, `once`, `pairs`,
* `partial`, `partialRight`, `pick`, `pluck`, `pull`, `push`, `range`, `reject`,
* `remove`, `rest`, `reverse`, `shuffle`, `slice`, `sort`, `sortBy`, `splice`,
* `tap`, `throttle`, `times`, `toArray`, `transform`, `union`, `uniq`, `unshift`,
* `unzip`, `values`, `where`, `without`, `wrap`, and `zip`
*
* The non-chainable wrapper functions are:
* `clone`, `cloneDeep`, `contains`, `escape`, `every`, `find`, `findIndex`,
* `findKey`, `findLast`, `findLastIndex`, `findLastKey`, `has`, `identity`,
* `indexOf`, `isArguments`, `isArray`, `isBoolean`, `isDate`, `isElement`,
* `isEmpty`, `isEqual`, `isFinite`, `isFunction`, `isNaN`, `isNull`, `isNumber`,
* `isObject`, `isPlainObject`, `isRegExp`, `isString`, `isUndefined`, `join`,
* `lastIndexOf`, `mixin`, `noConflict`, `parseInt`, `pop`, `random`, `reduce`,
* `reduceRight`, `result`, `shift`, `size`, `some`, `sortedIndex`, `runInContext`,
* `template`, `unescape`, `uniqueId`, and `value`
*
* The wrapper functions `first` and `last` return wrapped values when `n` is
* provided, otherwise they return unwrapped values.
*
* @name _
* @constructor
* @category Chaining
* @param {*} value The value to wrap in a `lodash` instance.
* @returns {Object} Returns a `lodash` instance.
* @example
*
* var wrapped = _([1, 2, 3]);
*
* // returns an unwrapped value
* wrapped.reduce(function(sum, num) {
* return sum + num;
* });
* // => 6
*
* // returns a wrapped value
* var squares = wrapped.map(function(num) {
* return num * num;
* });
*
* _.isArray(squares);
* // => false
*
* _.isArray(squares.value());
* // => true
*/
function lodash(value) {
// don't wrap if already wrapped, even if wrapped by a different `lodash` constructor
return (value && typeof value == 'object' && !isArray(value) && hasOwnProperty.call(value, '__wrapped__'))
? value
: new lodashWrapper(value);
}
/**
* A fast path for creating `lodash` wrapper objects.
*
* @private
* @param {*} value The value to wrap in a `lodash` instance.
* @param {boolean} chainAll A flag to enable chaining for all methods
* @returns {Object} Returns a `lodash` instance.
*/
function lodashWrapper(value, chainAll) {
this.__chain__ = !!chainAll;
this.__wrapped__ = value;
}
// ensure `new lodashWrapper` is an instance of `lodash`
lodashWrapper.prototype = lodash.prototype;
/**
* An object used to flag environments features.
*
* @static
* @memberOf _
* @type Object
*/
var support = lodash.support = {};
(function() {
var ctor = function() { this.x = 1; },
object = { '0': 1, 'length': 1 },
props = [];
ctor.prototype = { 'valueOf': 1, 'y': 1 };
for (var prop in new ctor) { props.push(prop); }
for (prop in arguments) { }
/**
* Detect if an `arguments` object's [[Class]] is resolvable (all but Firefox < 4, IE < 9).
*
* @memberOf _.support
* @type boolean
*/
support.argsClass = toString.call(arguments) == argsClass;
/**
* Detect if `arguments` objects are `Object` objects (all but Narwhal and Opera < 10.5).
*
* @memberOf _.support
* @type boolean
*/
support.argsObject = arguments.constructor == Object && !(arguments instanceof Array);
/**
* Detect if `name` or `message` properties of `Error.prototype` are
* enumerable by default. (IE < 9, Safari < 5.1)
*
* @memberOf _.support
* @type boolean
*/
support.enumErrorProps = propertyIsEnumerable.call(errorProto, 'message') || propertyIsEnumerable.call(errorProto, 'name');
/**
* Detect if `prototype` properties are enumerable by default.
*
* Firefox < 3.6, Opera > 9.50 - Opera < 11.60, and Safari < 5.1
* (if the prototype or a property on the prototype has been set)
* incorrectly sets a function's `prototype` property [[Enumerable]]
* value to `true`.
*
* @memberOf _.support
* @type boolean
*/
support.enumPrototypes = propertyIsEnumerable.call(ctor, 'prototype');
/**
* Detect if `Function#bind` exists and is inferred to be fast (all but V8).
*
* @memberOf _.support
* @type boolean
*/
support.fastBind = nativeBind && !isV8;
/**
* Detect if functions can be decompiled by `Function#toString`
* (all but PS3 and older Opera mobile browsers & avoided in Windows 8 apps).
*
* @memberOf _.support
* @type boolean
*/
support.funcDecomp = !reNative.test(context.WinRTError) && reThis.test(runInContext);
/**
* Detect if `Function#name` is supported (all but IE).
*
* @memberOf _.support
* @type boolean
*/
support.funcNames = typeof Function.name == 'string';
/**
* Detect if `arguments` object indexes are non-enumerable
* (Firefox < 4, IE < 9, PhantomJS, Safari < 5.1).
*
* @memberOf _.support
* @type boolean
*/
support.nonEnumArgs = prop != 0;
/**
* Detect if properties shadowing those on `Object.prototype` are non-enumerable.
*
* In IE < 9 an objects own properties, shadowing non-enumerable ones, are
* made non-enumerable as well (a.k.a the JScript [[DontEnum]] bug).
*
* @memberOf _.support
* @type boolean
*/
support.nonEnumShadows = !/valueOf/.test(props);
/**
* Detect if own properties are iterated after inherited properties (all but IE < 9).
*
* @memberOf _.support
* @type boolean
*/
support.ownLast = props[0] != 'x';
/**
* Detect if `Array#shift` and `Array#splice` augment array-like objects correctly.
*
* Firefox < 10, IE compatibility mode, and IE < 9 have buggy Array `shift()`
* and `splice()` functions that fail to remove the last element, `value[0]`,
* of array-like objects even though the `length` property is set to `0`.
* The `shift()` method is buggy in IE 8 compatibility mode, while `splice()`
* is buggy regardless of mode in IE < 9 and buggy in compatibility mode in IE 9.
*
* @memberOf _.support
* @type boolean
*/
support.spliceObjects = (arrayRef.splice.call(object, 0, 1), !object[0]);
/**
* Detect lack of support for accessing string characters by index.
*
* IE < 8 can't access characters by index and IE 8 can only access
* characters by index on string literals.
*
* @memberOf _.support
* @type boolean
*/
support.unindexedChars = ('x'[0] + Object('x')[0]) != 'xx';
/**
* Detect if a DOM node's [[Class]] is resolvable (all but IE < 9)
* and that the JS engine errors when attempting to coerce an object to
* a string without a `toString` function.
*
* @memberOf _.support
* @type boolean
*/
try {
support.nodeClass = !(toString.call(document) == objectClass && !({ 'toString': 0 } + ''));
} catch(e) {
support.nodeClass = true;
}
}(1));
/**
* By default, the template delimiters used by Lo-Dash are similar to those in
* embedded Ruby (ERB). Change the following template settings to use alternative
* delimiters.
*
* @static
* @memberOf _
* @type Object
*/
lodash.templateSettings = {
/**
* Used to detect `data` property values to be HTML-escaped.
*
* @memberOf _.templateSettings
* @type RegExp
*/
'escape': /<%-([\s\S]+?)%>/g,
/**
* Used to detect code to be evaluated.
*
* @memberOf _.templateSettings
* @type RegExp
*/
'evaluate': /<%([\s\S]+?)%>/g,
/**
* Used to detect `data` property values to inject.
*
* @memberOf _.templateSettings
* @type RegExp
*/
'interpolate': reInterpolate,
/**
* Used to reference the data object in the template text.
*
* @memberOf _.templateSettings
* @type string
*/
'variable': '',
/**
* Used to import variables into the compiled template.
*
* @memberOf _.templateSettings
* @type Object
*/
'imports': {
/**
* A reference to the `lodash` function.
*
* @memberOf _.templateSettings.imports
* @type Function
*/
'_': lodash
}
};
/*--------------------------------------------------------------------------*/
/**
* The template used to create iterator functions.
*
* @private
* @param {Object} data The data object used to populate the text.
* @returns {string} Returns the interpolated text.
*/
var iteratorTemplate = function(obj) {
var __p = 'var index, iterable = ' +
(obj.firstArg) +
', result = ' +
(obj.init) +
';\nif (!iterable) return result;\n' +
(obj.top) +
';';
if (obj.array) {
__p += '\nvar length = iterable.length; index = -1;\nif (' +
(obj.array) +
') { ';
if (support.unindexedChars) {
__p += '\n if (isString(iterable)) {\n iterable = iterable.split(\'\')\n } ';
}
__p += '\n while (++index < length) {\n ' +
(obj.loop) +
';\n }\n}\nelse { ';
} else if (support.nonEnumArgs) {
__p += '\n var length = iterable.length; index = -1;\n if (length && isArguments(iterable)) {\n while (++index < length) {\n index += \'\';\n ' +
(obj.loop) +
';\n }\n } else { ';
}
if (support.enumPrototypes) {
__p += '\n var skipProto = typeof iterable == \'function\';\n ';
}
if (support.enumErrorProps) {
__p += '\n var skipErrorProps = iterable === errorProto || iterable instanceof Error;\n ';
}
var conditions = []; if (support.enumPrototypes) { conditions.push('!(skipProto && index == "prototype")'); } if (support.enumErrorProps) { conditions.push('!(skipErrorProps && (index == "message" || index == "name"))'); }
if (obj.useHas && obj.keys) {
__p += '\n var ownIndex = -1,\n ownProps = objectTypes[typeof iterable] && keys(iterable),\n length = ownProps ? ownProps.length : 0;\n\n while (++ownIndex < length) {\n index = ownProps[ownIndex];\n';
if (conditions.length) {
__p += ' if (' +
(conditions.join(' && ')) +
') {\n ';
}
__p +=
(obj.loop) +
'; ';
if (conditions.length) {
__p += '\n }';
}
__p += '\n } ';
} else {
__p += '\n for (index in iterable) {\n';
if (obj.useHas) { conditions.push("hasOwnProperty.call(iterable, index)"); } if (conditions.length) {
__p += ' if (' +
(conditions.join(' && ')) +
') {\n ';
}
__p +=
(obj.loop) +
'; ';
if (conditions.length) {
__p += '\n }';
}
__p += '\n } ';
if (support.nonEnumShadows) {
__p += '\n\n if (iterable !== objectProto) {\n var ctor = iterable.constructor,\n isProto = iterable === (ctor && ctor.prototype),\n className = iterable === stringProto ? stringClass : iterable === errorProto ? errorClass : toString.call(iterable),\n nonEnum = nonEnumProps[className];\n ';
for (k = 0; k < 7; k++) {
__p += '\n index = \'' +
(obj.shadowedProps[k]) +
'\';\n if ((!(isProto && nonEnum[index]) && hasOwnProperty.call(iterable, index))';
if (!obj.useHas) {
__p += ' || (!nonEnum[index] && iterable[index] !== objectProto[index])';
}
__p += ') {\n ' +
(obj.loop) +
';\n } ';
}
__p += '\n } ';
}
}
if (obj.array || support.nonEnumArgs) {
__p += '\n}';
}
__p +=
(obj.bottom) +
';\nreturn result';
return __p
};
/*--------------------------------------------------------------------------*/
/**
* The base implementation of `_.clone` without argument juggling or support
* for `thisArg` binding.
*
* @private
* @param {*} value The value to clone.
* @param {boolean} [deep=false] Specify a deep clone.
* @param {Function} [callback] The function to customize cloning values.
* @param {Array} [stackA=[]] Tracks traversed source objects.
* @param {Array} [stackB=[]] Associates clones with source counterparts.
* @returns {*} Returns the cloned `value`.
*/
function baseClone(value, deep, callback, stackA, stackB) {
var result = value;
if (callback) {
result = callback(result);
if (typeof result != 'undefined') {
return result;
}
result = value;
}
// inspect [[Class]]
var isObj = isObject(result);
if (isObj) {
var className = toString.call(result);
if (!cloneableClasses[className] || (!support.nodeClass && isNode(result))) {
return result;
}
var isArr = isArray(result);
}
// shallow clone
if (!isObj || !deep) {
return isObj
? (isArr ? slice(result) : assign({}, result))
: result;
}
var ctor = ctorByClass[className];
switch (className) {
case boolClass:
case dateClass:
return new ctor(+result);
case numberClass:
case stringClass:
return new ctor(result);
case regexpClass:
return ctor(result.source, reFlags.exec(result));
}
// check for circular references and return corresponding clone
var initedStack = !stackA;
stackA || (stackA = getArray());
stackB || (stackB = getArray());
var length = stackA.length;
while (length--) {
if (stackA[length] == value) {
return stackB[length];
}
}
// init cloned object
result = isArr ? ctor(result.length) : {};
// add array properties assigned by `RegExp#exec`
if (isArr) {
if (hasOwnProperty.call(value, 'index')) {
result.index = value.index;
}
if (hasOwnProperty.call(value, 'input')) {
result.input = value.input;
}
}
// add the source value to the stack of traversed objects
// and associate it with its clone
stackA.push(value);
stackB.push(result);
// recursively populate clone (susceptible to call stack limits)
(isArr ? baseEach : forOwn)(value, function(objValue, key) {
result[key] = baseClone(objValue, deep, callback, stackA, stackB);
});
if (initedStack) {
releaseArray(stackA);
releaseArray(stackB);
}
return result;
}
/**
* The base implementation of `_.createCallback` without support for creating
* "_.pluck" or "_.where" style callbacks.
*
* @private
* @param {*} [func=identity] The value to convert to a callback.
* @param {*} [thisArg] The `this` binding of the created callback.
* @param {number} [argCount] The number of arguments the callback accepts.
* @returns {Function} Returns a callback function.
*/
function baseCreateCallback(func, thisArg, argCount) {
if (typeof func != 'function') {
return identity;
}
// exit early if there is no `thisArg`
if (typeof thisArg == 'undefined') {
return func;
}
var bindData = func.__bindData__ || (support.funcNames && !func.name);
if (typeof bindData == 'undefined') {
var source = reThis && fnToString.call(func);
if (!support.funcNames && source && !reFuncName.test(source)) {
bindData = true;
}
if (support.funcNames || !bindData) {
// checks if `func` references the `this` keyword and stores the result
bindData = !support.funcDecomp || reThis.test(source);
setBindData(func, bindData);
}
}
// exit early if there are no `this` references or `func` is bound
if (bindData !== true && (bindData && bindData[1] & 1)) {
return func;
}
switch (argCount) {
case 1: return function(value) {
return func.call(thisArg, value);
};
case 2: return function(a, b) {
return func.call(thisArg, a, b);
};
case 3: return function(value, index, collection) {
return func.call(thisArg, value, index, collection);
};
case 4: return function(accumulator, value, index, collection) {
return func.call(thisArg, accumulator, value, index, collection);
};
}
return bind(func, thisArg);
}
/**
* The base implementation of `_.flatten` without support for callback
* shorthands or `thisArg` binding.
*
* @private
* @param {Array} array The array to flatten.
* @param {boolean} [isShallow=false] A flag to restrict flattening to a single level.
* @param {boolean} [isArgArrays=false] A flag to restrict flattening to arrays and `arguments` objects.
* @param {number} [fromIndex=0] The index to start from.
* @returns {Array} Returns a new flattened array.
*/
function baseFlatten(array, isShallow, isArgArrays, fromIndex) {
var index = (fromIndex || 0) - 1,
length = array ? array.length : 0,
result = [];
while (++index < length) {
var value = array[index];
if (value && typeof value == 'object' && typeof value.length == 'number'
&& (isArray(value) || isArguments(value))) {
// recursively flatten arrays (susceptible to call stack limits)
if (!isShallow) {
value = baseFlatten(value, isShallow, isArgArrays);
}
var valIndex = -1,
valLength = value.length,
resIndex = result.length;
result.length += valLength;
while (++valIndex < valLength) {
result[resIndex++] = value[valIndex];
}
} else if (!isArgArrays) {
result.push(value);
}
}
return result;
}
/**
* The base implementation of `_.isEqual`, without support for `thisArg` binding,
* that allows partial "_.where" style comparisons.
*
* @private
* @param {*} a The value to compare.
* @param {*} b The other value to compare.
* @param {Function} [callback] The function to customize comparing values.
* @param {Function} [isWhere=false] A flag to indicate performing partial comparisons.
* @param {Array} [stackA=[]] Tracks traversed `a` objects.
* @param {Array} [stackB=[]] Tracks traversed `b` objects.
* @returns {boolean} Returns `true` if the values are equivalent, else `false`.
*/
function baseIsEqual(a, b, callback, isWhere, stackA, stackB) {
// used to indicate that when comparing objects, `a` has at least the properties of `b`
if (callback) {
var result = callback(a, b);
if (typeof result != 'undefined') {
return !!result;
}
}
// exit early for identical values
if (a === b) {
// treat `+0` vs. `-0` as not equal
return a !== 0 || (1 / a == 1 / b);
}
var type = typeof a,
otherType = typeof b;
// exit early for unlike primitive values
if (a === a &&
!(a && objectTypes[type]) &&
!(b && objectTypes[otherType])) {
return false;
}
// exit early for `null` and `undefined` avoiding ES3's Function#call behavior
// http://es5.github.io/#x15.3.4.4
if (a == null || b == null) {
return a === b;
}
// compare [[Class]] names
var className = toString.call(a),
otherClass = toString.call(b);
if (className == argsClass) {
className = objectClass;
}
if (otherClass == argsClass) {
otherClass = objectClass;
}
if (className != otherClass) {
return false;
}
switch (className) {
case boolClass:
case dateClass:
// coerce dates and booleans to numbers, dates to milliseconds and booleans
// to `1` or `0` treating invalid dates coerced to `NaN` as not equal
return +a == +b;
case numberClass:
// treat `NaN` vs. `NaN` as equal
return (a != +a)
? b != +b
// but treat `+0` vs. `-0` as not equal
: (a == 0 ? (1 / a == 1 / b) : a == +b);
case regexpClass:
case stringClass:
// coerce regexes to strings (http://es5.github.io/#x15.10.6.4)
// treat string primitives and their corresponding object instances as equal
return a == String(b);
}
var isArr = className == arrayClass;
if (!isArr) {
// unwrap any `lodash` wrapped values
if (hasOwnProperty.call(a, '__wrapped__ ') || hasOwnProperty.call(b, '__wrapped__')) {
return baseIsEqual(a.__wrapped__ || a, b.__wrapped__ || b, callback, isWhere, stackA, stackB);
}
// exit for functions and DOM nodes
if (className != objectClass || (!support.nodeClass && (isNode(a) || isNode(b)))) {
return false;
}
// in older versions of Opera, `arguments` objects have `Array` constructors
var ctorA = !support.argsObject && isArguments(a) ? Object : a.constructor,
ctorB = !support.argsObject && isArguments(b) ? Object : b.constructor;
// non `Object` object instances with different constructors are not equal
if (ctorA != ctorB && !(
isFunction(ctorA) && ctorA instanceof ctorA &&
isFunction(ctorB) && ctorB instanceof ctorB
)) {
return false;
}
}
// assume cyclic structures are equal
// the algorithm for detecting cyclic structures is adapted from ES 5.1
// section 15.12.3, abstract operation `JO` (http://es5.github.io/#x15.12.3)
var initedStack = !stackA;
stackA || (stackA = getArray());
stackB || (stackB = getArray());
var length = stackA.length;
while (length--) {
if (stackA[length] == a) {
return stackB[length] == b;
}
}
var size = 0;
result = true;
// add `a` and `b` to the stack of traversed objects
stackA.push(a);
stackB.push(b);
// recursively compare objects and arrays (susceptible to call stack limits)
if (isArr) {
length = a.length;
size = b.length;
// compare lengths to determine if a deep comparison is necessary
result = size == a.length;
if (!result && !isWhere) {
return result;
}
// deep compare the contents, ignoring non-numeric properties
while (size--) {
var index = length,
value = b[size];
if (isWhere) {
while (index--) {
if ((result = baseIsEqual(a[index], value, callback, isWhere, stackA, stackB))) {
break;
}
}
} else if (!(result = baseIsEqual(a[size], value, callback, isWhere, stackA, stackB))) {
break;
}
}
return result;
}
// deep compare objects using `forIn`, instead of `forOwn`, to avoid `Object.keys`
// which, in this case, is more costly
forIn(b, function(value, key, b) {
if (hasOwnProperty.call(b, key)) {
// count the number of properties.
size++;
// deep compare each property value.
return (result = hasOwnProperty.call(a, key) && baseIsEqual(a[key], value, callback, isWhere, stackA, stackB));
}
});
if (result && !isWhere) {
// ensure both objects have the same number of properties
forIn(a, function(value, key, a) {
if (hasOwnProperty.call(a, key)) {
// `size` will be `-1` if `a` has more properties than `b`
return (result = --size > -1);
}
});
}
if (initedStack) {
releaseArray(stackA);
releaseArray(stackB);
}
return result;
}
/**
* The base implementation of `_.merge` without argument juggling or support
* for `thisArg` binding.
*
* @private
* @param {Object} object The destination object.
* @param {Object} source The source object.
* @param {Function} [callback] The function to customize merging properties.
* @param {Array} [stackA=[]] Tracks traversed source objects.
* @param {Array} [stackB=[]] Associates values with source counterparts.
*/
function baseMerge(object, source, callback, stackA, stackB) {
(isArray(source) ? forEach : forOwn)(source, function(source, key) {
var found,
isArr,
result = source,
value = object[key];
if (source && ((isArr = isArray(source)) || isPlainObject(source))) {
// avoid merging previously merged cyclic sources
var stackLength = stackA.length;
while (stackLength--) {
if ((found = stackA[stackLength] == source)) {
value = stackB[stackLength];
break;
}
}
if (!found) {
var isShallow;
if (callback) {
result = callback(value, source);
if ((isShallow = typeof result != 'undefined')) {
value = result;
}
}
if (!isShallow) {
value = isArr
? (isArray(value) ? value : [])
: (isPlainObject(value) ? value : {});
}
// add `source` and associated `value` to the stack of traversed objects
stackA.push(source);
stackB.push(value);
// recursively merge objects and arrays (susceptible to call stack limits)
if (!isShallow) {
baseMerge(value, source, callback, stackA, stackB);
}
}
}
else {
if (callback) {
result = callback(value, source);
if (typeof result == 'undefined') {
result = source;
}
}
if (typeof result != 'undefined') {
value = result;
}
}
object[key] = value;
});
}
/**
* The base implementation of `_.uniq` without support for callback shorthands
* or `thisArg` binding.
*
* @private
* @param {Array} array The array to process.
* @param {boolean} [isSorted=false] A flag to indicate that `array` is sorted.
* @param {Function} [callback] The function called per iteration.
* @returns {Array} Returns a duplicate-value-free array.
*/
function baseUniq(array, isSorted, callback) {
var index = -1,
indexOf = getIndexOf(),
length = array ? array.length : 0,
result = [];
var isLarge = !isSorted && length >= largeArraySize && indexOf === baseIndexOf,
seen = (callback || isLarge) ? getArray() : result;
if (isLarge) {
var cache = createCache(seen);
if (cache) {
indexOf = cacheIndexOf;
seen = cache;
} else {
isLarge = false;
seen = callback ? seen : (releaseArray(seen), result);
}
}
while (++index < length) {
var value = array[index],
computed = callback ? callback(value, index, array) : value;
if (isSorted
? !index || seen[seen.length - 1] !== computed
: indexOf(seen, computed) < 0
) {
if (callback || isLarge) {
seen.push(computed);
}
result.push(value);
}
}
if (isLarge) {
releaseArray(seen.array);
releaseObject(seen);
} else if (callback) {
releaseArray(seen);
}
return result;
}
/**
* 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 = lodash.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;
};
}
/**
* Creates a function that, when called, either curries or invokes `func`
* with an optional `this` binding and partially applied arguments.
*
* @private
* @param {Function|string} func The function or method name to reference.
* @param {number} bitmask The bitmask of method flags to compose.
* The bitmask may be composed of the following flags:
* 1 - `_.bind`
* 2 - `_.bindKey`
* 4 - `_.curry`
* 8 - `_.curry` (bound)
* 16 - `_.partial`
* 32 - `_.partialRight`
* @param {Array} [partialArgs] An array of arguments to prepend to those
* provided to the new function.
* @param {Array} [partialRightArgs] An array of arguments to append to those
* provided to the new function.
* @param {*} [thisArg] The `this` binding of `func`.
* @param {number} [arity] The arity of `func`.
* @returns {Function} Returns the new bound function.
*/
function createBound(func, bitmask, partialArgs, partialRightArgs, thisArg, arity) {
var isBind = bitmask & 1,
isBindKey = bitmask & 2,
isCurry = bitmask & 4,
isCurryBound = bitmask & 8,
isPartial = bitmask & 16,
isPartialRight = bitmask & 32,
key = func;
if (!isBindKey && !isFunction(func)) {
throw new TypeError;
}
if (isPartial && !partialArgs.length) {
bitmask &= ~16;
isPartial = partialArgs = false;
}
if (isPartialRight && !partialRightArgs.length) {
bitmask &= ~32;
isPartialRight = partialRightArgs = false;
}
var bindData = func && func.__bindData__;
if (bindData) {
if (isBind && !(bindData[1] & 1)) {
bindData[4] = thisArg;
}
if (!isBind && bindData[1] & 1) {
bitmask |= 8;
}
if (isCurry && !(bindData[1] & 4)) {
bindData[5] = arity;
}
if (isPartial) {
push.apply(bindData[2] || (bindData[2] = []), partialArgs);
}
if (isPartialRight) {
push.apply(bindData[3] || (bindData[3] = []), partialRightArgs);
}
bindData[1] |= bitmask;
return createBound.apply(null, bindData);
}
// use `Function#bind` if it exists and is fast
// (in V8 `Function#bind` is slower except when partially applied)
if (isBind && !(isBindKey || isCurry || isPartialRight) &&
(support.fastBind || (nativeBind && isPartial))) {
if (isPartial) {
var args = [thisArg];
push.apply(args, partialArgs);
}
var bound = isPartial
? nativeBind.apply(func, args)
: nativeBind.call(func, thisArg);
}
else {
bound = function() {
// `Function#bind` spec
// http://es5.github.io/#x15.3.4.5
var args = arguments,
thisBinding = isBind ? thisArg : this;
if (isCurry || isPartial || isPartialRight) {
args = nativeSlice.call(args);
if (isPartial) {
unshift.apply(args, partialArgs);
}
if (isPartialRight) {
push.apply(args, partialRightArgs);
}
if (isCurry && args.length < arity) {
bitmask |= 16 & ~32;
return createBound(func, (isCurryBound ? bitmask : bitmask & ~3), args, null, thisArg, arity);
}
}
if (isBindKey) {
func = thisBinding[key];
}
if (this instanceof bound) {
// ensure `new bound` is an instance of `func`
thisBinding = createObject(func.prototype);
// mimic the constructor's `return` behavior
// http://es5.github.io/#x13.2.2
var result = func.apply(thisBinding, args);
return isObject(result) ? result : thisBinding;
}
return func.apply(thisBinding, args);
};
}
setBindData(bound, nativeSlice.call(arguments));
return bound;
}
/**
* Creates compiled iteration functions.
*
* @private
* @param {...Object} [options] The compile options object(s).
* @param {string} [options.array] Code to determine if the iterable is an array or array-like.
* @param {boolean} [options.useHas] Specify using `hasOwnProperty` checks in the object loop.
* @param {Function} [options.keys] A reference to `_.keys` for use in own property iteration.
* @param {string} [options.args] A comma separated string of iteration function arguments.
* @param {string} [options.top] Code to execute before the iteration branches.
* @param {string} [options.loop] Code to execute in the object loop.
* @param {string} [options.bottom] Code to execute after the iteration branches.
* @returns {Function} Returns the compiled function.
*/
function createIterator() {
var data = getObject();
// data properties
data.shadowedProps = shadowedProps;
// iterator options
data.array = data.bottom = data.loop = data.top = '';
data.init = 'iterable';
data.useHas = true;
// merge options into a template data object
for (var object, index = 0; object = arguments[index]; index++) {
for (var key in object) {
data[key] = object[key];
}
}
var args = data.args;
data.firstArg = /^[^,]+/.exec(args)[0];
// create the function factory
var factory = Function(
'baseCreateCallback, errorClass, errorProto, hasOwnProperty, ' +
'indicatorObject, isArguments, isArray, isString, keys, objectProto, ' +
'objectTypes, nonEnumProps, stringClass, stringProto, toString',
'return function(' + args + ') {\n' + iteratorTemplate(data) + '\n}'
);
releaseObject(data);
// return the compiled function
return factory(
baseCreateCallback, errorClass, errorProto, hasOwnProperty,
indicatorObject, isArguments, isArray, isString, data.keys, objectProto,
objectTypes, nonEnumProps, stringClass, stringProto, toString
);
}
/**
* Creates a new object with the specified `prototype`.
*
* @private
* @param {Object} prototype The prototype object.
* @returns {Object} Returns the new object.
*/
function createObject(prototype) {
return isObject(prototype) ? nativeCreate(prototype) : {};
}
// fallback for browsers without `Object.create`
if (!nativeCreate) {
createObject = function(prototype) {
if (isObject(prototype)) {
noop.prototype = prototype;
var result = new noop;
noop.prototype = null;
}
return result || {};
};
}
/**
* Used by `escape` to convert characters to HTML entities.
*
* @private
* @param {string} match The matched character to escape.
* @returns {string} Returns the escaped character.
*/
function escapeHtmlChar(match) {
return htmlEscapes[match];
}
/**
* Gets the appropriate "indexOf" function. If the `_.indexOf` method is
* customized, this method returns the custom method, otherwise it returns
* the `baseIndexOf` function.
*
* @private
* @returns {Function} Returns the "indexOf" function.
*/
function getIndexOf() {
var result = (result = lodash.indexOf) === indexOf ? baseIndexOf : result;
return result;
}
/**
* Sets `this` binding data on a given function.
*
* @private
* @param {Function} func The function to set data on.
* @param {*} value The value to set.
*/
var setBindData = !defineProperty ? noop : function(func, value) {
var descriptor = getObject();
descriptor.value = value;
defineProperty(func, '__bindData__', descriptor);
releaseObject(descriptor);
};
/**
* A fallback implementation of `isPlainObject` which checks if a given value
* is an object created by the `Object` constructor, assuming objects created
* by the `Object` constructor have no inherited enumerable properties and that
* there are no `Object.prototype` extensions.
*
* @private
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
*/
function shimIsPlainObject(value) {
var ctor,
result;
// avoid non Object objects, `arguments` objects, and DOM elements
if (!(value && toString.call(value) == objectClass) ||
(ctor = value.constructor, isFunction(ctor) && !(ctor instanceof ctor)) ||
(!support.argsClass && isArguments(value)) ||
(!support.nodeClass && isNode(value))) {
return false;
}
// IE < 9 iterates inherited properties before own properties. If the first
// iterated property is an object's own property then there are no inherited
// enumerable properties.
if (support.ownLast) {
forIn(value, function(value, key, object) {
result = hasOwnProperty.call(object, key);
return false;
});
return result !== false;
}
// In most environments an object's own properties are iterated before
// its inherited properties. If the last iterated property is an object's
// own property then there are no inherited enumerable properties.
forIn(value, function(value, key) {
result = key;
});
return typeof result == 'undefined' || hasOwnProperty.call(value, result);
}
/**
* Used by `unescape` to convert HTML entities to characters.
*
* @private
* @param {string} match The matched character to unescape.
* @returns {string} Returns the unescaped character.
*/
function unescapeHtmlChar(match) {
return htmlUnescapes[match];
}
/*--------------------------------------------------------------------------*/
/**
* Checks if `value` is an `arguments` object.
*
* @static
* @memberOf _
* @category Objects
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if the `value` is an `arguments` object, else `false`.
* @example
*
* (function() { return _.isArguments(arguments); })(1, 2, 3);
* // => true
*
* _.isArguments([1, 2, 3]);
* // => false
*/
function isArguments(value) {
return value && typeof value == 'object' && typeof value.length == 'number' &&
toString.call(value) == argsClass || false;
}
// fallback for browsers that can't detect `arguments` objects by [[Class]]
if (!support.argsClass) {
isArguments = function(value) {
return value && typeof value == 'object' && typeof value.length == 'number' &&
hasOwnProperty.call(value, 'callee') || false;
};
}
/**
* Checks if `value` is an array.
*
* @static
* @memberOf _
* @type Function
* @category Objects
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if the `value` is an array, else `false`.
* @example
*
* (function() { return _.isArray(arguments); })();
* // => false
*
* _.isArray([1, 2, 3]);
* // => true
*/
var isArray = nativeIsArray || function(value) {
return value && typeof value == 'object' && typeof value.length == 'number' &&
toString.call(value) == arrayClass || false;
};
/**
* A fallback implementation of `Object.keys` which produces an array of the
* given object's own enumerable property names.
*
* @private
* @type Function
* @param {Object} object The object to inspect.
* @returns {Array} Returns an array of property names.
*/
var shimKeys = createIterator({
'args': 'object',
'init': '[]',
'top': 'if (!(objectTypes[typeof object])) return result',
'loop': 'result.push(index)'
});
/**
* Creates an array composed of the own enumerable property names of an object.
*
* @static
* @memberOf _
* @category Objects
* @param {Object} object The object to inspect.
* @returns {Array} Returns an array of property names.
* @example
*
* _.keys({ 'one': 1, 'two': 2, 'three': 3 });
* // => ['one', 'two', 'three'] (property order is not guaranteed across environments)
*/
var keys = !nativeKeys ? shimKeys : function(object) {
if (!isObject(object)) {
return [];
}
if ((support.enumPrototypes && typeof object == 'function') ||
(support.nonEnumArgs && object.length && isArguments(object))) {
return shimKeys(object);
}
return nativeKeys(object);
};
/** Reusable iterator options shared by `each`, `forIn`, and `forOwn` */
var eachIteratorOptions = {
'args': 'collection, callback, thisArg',
'top': "callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3)",
'array': "typeof length == 'number'",
'keys': keys,
'loop': 'if (callback(iterable[index], index, collection) === false) return result'
};
/** Reusable iterator options for `assign` and `defaults` */
var defaultsIteratorOptions = {
'args': 'object, source, guard',
'top':
'var args = arguments,\n' +
' argsIndex = 0,\n' +
" argsLength = typeof guard == 'number' ? 2 : args.length;\n" +
'while (++argsIndex < argsLength) {\n' +
' iterable = args[argsIndex];\n' +
' if (iterable && objectTypes[typeof iterable]) {',
'keys': keys,
'loop': "if (typeof result[index] == 'undefined') result[index] = iterable[index]",
'bottom': ' }\n}'
};
/** Reusable iterator options for `forIn` and `forOwn` */
var forOwnIteratorOptions = {
'top': 'if (!objectTypes[typeof iterable]) return result;\n' + eachIteratorOptions.top,
'array': false
};
/**
* Used to convert characters to HTML entities:
*
* Though the `>` character is escaped for symmetry, characters like `>` and `/`
* don't require escaping in HTML and have no special meaning unless they're part
* of a tag or an unquoted attribute value.
* http://mathiasbynens.be/notes/ambiguous-ampersands (under "semi-related fun fact")
*/
var htmlEscapes = {
'&': '&',
'<': '<',
'>': '>',
'"': '"',
"'": '''
};
/** Used to convert HTML entities to characters */
var htmlUnescapes = invert(htmlEscapes);
/** Used to match HTML entities and HTML characters */
var reEscapedHtml = RegExp('(' + keys(htmlUnescapes).join('|') + ')', 'g'),
reUnescapedHtml = RegExp('[' + keys(htmlEscapes).join('') + ']', 'g');
/**
* A function compiled to iterate `arguments` objects, arrays, objects, and
* strings consistenly across environments, executing the callback for each
* element in the collection. The callback is bound to `thisArg` and invoked
* with three arguments; (value, index|key, collection). Callbacks may exit
* iteration early by explicitly returning `false`.
*
* @private
* @type Function
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function} [callback=identity] The function called per iteration.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Array|Object|string} Returns `collection`.
*/
var baseEach = createIterator(eachIteratorOptions);
/*--------------------------------------------------------------------------*/
/**
* Assigns own enumerable properties of source object(s) to the destination
* object. Subsequent sources will overwrite property assignments of previous
* sources. If a callback is provided it will be executed to produce the
* assigned values. The callback is bound to `thisArg` and invoked with two
* arguments; (objectValue, sourceValue).
*
* @static
* @memberOf _
* @type Function
* @alias extend
* @category Objects
* @param {Object} object The destination object.
* @param {...Object} [source] The source objects.
* @param {Function} [callback] The function to customize assigning values.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Object} Returns the destination object.
* @example
*
* _.assign({ 'name': 'moe' }, { 'age': 40 });
* // => { 'name': 'moe', 'age': 40 }
*
* var defaults = _.partialRight(_.assign, function(a, b) {
* return typeof a == 'undefined' ? b : a;
* });
*
* var food = { 'name': 'apple' };
* defaults(food, { 'name': 'banana', 'type': 'fruit' });
* // => { 'name': 'apple', 'type': 'fruit' }
*/
var assign = createIterator(defaultsIteratorOptions, {
'top':
defaultsIteratorOptions.top.replace(';',
';\n' +
"if (argsLength > 3 && typeof args[argsLength - 2] == 'function') {\n" +
' var callback = baseCreateCallback(args[--argsLength - 1], args[argsLength--], 2);\n' +
"} else if (argsLength > 2 && typeof args[argsLength - 1] == 'function') {\n" +
' callback = args[--argsLength];\n' +
'}'
),
'loop': 'result[index] = callback ? callback(result[index], iterable[index]) : iterable[index]'
});
/**
* Creates a clone of `value`. If `deep` is `true` nested objects will also
* be cloned, otherwise they will be assigned by reference. If a callback
* is provided it will be executed to produce the cloned values. If the
* callback returns `undefined` cloning will be handled by the method instead.
* The callback is bound to `thisArg` and invoked with one argument; (value).
*
* @static
* @memberOf _
* @category Objects
* @param {*} value The value to clone.
* @param {boolean} [deep=false] Specify a deep clone.
* @param {Function} [callback] The function to customize cloning values.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {*} Returns the cloned `value`.
* @example
*
* var stooges = [
* { 'name': 'moe', 'age': 40 },
* { 'name': 'larry', 'age': 50 }
* ];
*
* var shallow = _.clone(stooges);
* shallow[0] === stooges[0];
* // => true
*
* var deep = _.clone(stooges, true);
* deep[0] === stooges[0];
* // => false
*
* _.mixin({
* 'clone': _.partialRight(_.clone, function(value) {
* return _.isElement(value) ? value.cloneNode(false) : undefined;
* })
* });
*
* var clone = _.clone(document.body);
* clone.childNodes.length;
* // => 0
*/
function clone(value, deep, callback, thisArg) {
// allows working with "Collections" methods without using their `index`
// and `collection` arguments for `deep` and `callback`
if (typeof deep != 'boolean' && deep != null) {
thisArg = callback;
callback = deep;
deep = false;
}
return baseClone(value, deep, typeof callback == 'function' && baseCreateCallback(callback, thisArg, 1));
}
/**
* Creates a deep clone of `value`. If a callback is provided it will be
* executed to produce the cloned values. If the callback returns `undefined`
* cloning will be handled by the method instead. The callback is bound to
* `thisArg` and invoked with one argument; (value).
*
* Note: This method is loosely based on the structured clone algorithm. Functions
* and DOM nodes are **not** cloned. The enumerable properties of `arguments` objects and
* objects created by constructors other than `Object` are cloned to plain `Object` objects.
* See http://www.w3.org/TR/html5/infrastructure.html#internal-structured-cloning-algorithm.
*
* @static
* @memberOf _
* @category Objects
* @param {*} value The value to deep clone.
* @param {Function} [callback] The function to customize cloning values.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {*} Returns the deep cloned `value`.
* @example
*
* var stooges = [
* { 'name': 'moe', 'age': 40 },
* { 'name': 'larry', 'age': 50 }
* ];
*
* var deep = _.cloneDeep(stooges);
* deep[0] === stooges[0];
* // => false
*
* var view = {
* 'label': 'docs',
* 'node': element
* };
*
* var clone = _.cloneDeep(view, function(value) {
* return _.isElement(value) ? value.cloneNode(true) : undefined;
* });
*
* clone.node == view.node;
* // => false
*/
function cloneDeep(value, callback, thisArg) {
return baseClone(value, true, typeof callback == 'function' && baseCreateCallback(callback, thisArg, 1));
}
/**
* Assigns own enumerable properties of source object(s) to the destination
* object for all destination properties that resolve to `undefined`. Once a
* property is set, additional defaults of the same property will be ignored.
*
* @static
* @memberOf _
* @type Function
* @category Objects
* @param {Object} object The destination object.
* @param {...Object} [source] The source objects.
* @param- {Object} [guard] Allows working with `_.reduce` without using its
* `key` and `object` arguments as sources.
* @returns {Object} Returns the destination object.
* @example
*
* var food = { 'name': 'apple' };
* _.defaults(food, { 'name': 'banana', 'type': 'fruit' });
* // => { 'name': 'apple', 'type': 'fruit' }
*/
var defaults = createIterator(defaultsIteratorOptions);
/**
* This method is like `_.findIndex` except that it returns the key of the
* first element that passes the callback check, instead of the element itself.
*
* @static
* @memberOf _
* @category Objects
* @param {Object} object The object to search.
* @param {Function|Object|string} [callback=identity] The function called per
* iteration. If a property name or object is provided it will be used to
* create a "_.pluck" or "_.where" style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {string|undefined} Returns the key of the found element, else `undefined`.
* @example
*
* _.findKey({ 'a': 1, 'b': 2, 'c': 3, 'd': 4 }, function(num) {
* return num % 2 == 0;
* });
* // => 'b' (property order is not guaranteed across environments)
*/
function findKey(object, callback, thisArg) {
var result;
callback = lodash.createCallback(callback, thisArg, 3);
forOwn(object, function(value, key, object) {
if (callback(value, key, object)) {
result = key;
return false;
}
});
return result;
}
/**
* This method is like `_.findKey` except that it iterates over elements
* of a `collection` in the opposite order.
*
* @static
* @memberOf _
* @category Objects
* @param {Object} object The object to search.
* @param {Function|Object|string} [callback=identity] The function called per
* iteration. If a property name or object is provided it will be used to
* create a "_.pluck" or "_.where" style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {string|undefined} Returns the key of the found element, else `undefined`.
* @example
*
* _.findLastKey({ 'a': 1, 'b': 2, 'c': 3, 'd': 4 }, function(num) {
* return num % 2 == 1;
* });
* // => returns `c`, assuming `_.findKey` returns `a`
*/
function findLastKey(object, callback, thisArg) {
var result;
callback = lodash.createCallback(callback, thisArg, 3);
forOwnRight(object, function(value, key, object) {
if (callback(value, key, object)) {
result = key;
return false;
}
});
return result;
}
/**
* Iterates over own and inherited enumerable properties of an object,
* executing the callback for each property. The callback is bound to `thisArg`
* and invoked with three arguments; (value, key, object). Callbacks may exit
* iteration early by explicitly returning `false`.
*
* @static
* @memberOf _
* @type Function
* @category Objects
* @param {Object} object The object to iterate over.
* @param {Function} [callback=identity] The function called per iteration.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Object} Returns `object`.
* @example
*
* function Dog(name) {
* this.name = name;
* }
*
* Dog.prototype.bark = function() {
* console.log('Woof, woof!');
* };
*
* _.forIn(new Dog('Dagny'), function(value, key) {
* console.log(key);
* });
* // => logs 'bark' and 'name' (property order is not guaranteed across environments)
*/
var forIn = createIterator(eachIteratorOptions, forOwnIteratorOptions, {
'useHas': false
});
/**
* This method is like `_.forIn` except that it iterates over elements
* of a `collection` in the opposite order.
*
* @static
* @memberOf _
* @category Objects
* @param {Object} object The object to iterate over.
* @param {Function} [callback=identity] The function called per iteration.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Object} Returns `object`.
* @example
*
* function Dog(name) {
* this.name = name;
* }
*
* Dog.prototype.bark = function() {
* console.log('Woof, woof!');
* };
*
* _.forInRight(new Dog('Dagny'), function(value, key) {
* console.log(key);
* });
* // => logs 'name' and 'bark' assuming `_.forIn ` logs 'bark' and 'name'
*/
function forInRight(object, callback, thisArg) {
var pairs = [];
forIn(object, function(value, key) {
pairs.push(key, value);
});
var length = pairs.length;
callback = baseCreateCallback(callback, thisArg, 3);
while (length--) {
if (callback(pairs[length--], pairs[length], object) === false) {
break;
}
}
return object;
}
/**
* Iterates over own enumerable properties of an object, executing the callback
* for each property. The callback is bound to `thisArg` and invoked with three
* arguments; (value, key, object). Callbacks may exit iteration early by
* explicitly returning `false`.
*
* @static
* @memberOf _
* @type Function
* @category Objects
* @param {Object} object The object to iterate over.
* @param {Function} [callback=identity] The function called per iteration.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Object} Returns `object`.
* @example
*
* _.forOwn({ '0': 'zero', '1': 'one', 'length': 2 }, function(num, key) {
* console.log(key);
* });
* // => logs '0', '1', and 'length' (property order is not guaranteed across environments)
*/
var forOwn = createIterator(eachIteratorOptions, forOwnIteratorOptions);
/**
* This method is like `_.forOwn` except that it iterates over elements
* of a `collection` in the opposite order.
*
* @static
* @memberOf _
* @category Objects
* @param {Object} object The object to iterate over.
* @param {Function} [callback=identity] The function called per iteration.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Object} Returns `object`.
* @example
*
* _.forOwnRight({ '0': 'zero', '1': 'one', 'length': 2 }, function(num, key) {
* console.log(key);
* });
* // => logs 'length', '1', and '0' assuming `_.forOwn` logs '0', '1', and 'length'
*/
function forOwnRight(object, callback, thisArg) {
var props = keys(object),
length = props.length;
callback = baseCreateCallback(callback, thisArg, 3);
while (length--) {
var key = props[length];
if (callback(object[key], key, object) === false) {
break;
}
}
return object;
}
/**
* Creates a sorted array of property names of all enumerable properties,
* own and inherited, of `object` that have function values.
*
* @static
* @memberOf _
* @alias methods
* @category Objects
* @param {Object} object The object to inspect.
* @returns {Array} Returns an array of property names that have function values.
* @example
*
* _.functions(_);
* // => ['all', 'any', 'bind', 'bindAll', 'clone', 'compact', 'compose', ...]
*/
function functions(object) {
var result = [];
forIn(object, function(value, key) {
if (isFunction(value)) {
result.push(key);
}
});
return result.sort();
}
/**
* Checks if the specified object `property` exists and is a direct property,
* instead of an inherited property.
*
* @static
* @memberOf _
* @category Objects
* @param {Object} object The object to check.
* @param {string} property The property to check for.
* @returns {boolean} Returns `true` if key is a direct property, else `false`.
* @example
*
* _.has({ 'a': 1, 'b': 2, 'c': 3 }, 'b');
* // => true
*/
function has(object, property) {
return object ? hasOwnProperty.call(object, property) : false;
}
/**
* Creates an object composed of the inverted keys and values of the given object.
*
* @static
* @memberOf _
* @category Objects
* @param {Object} object The object to invert.
* @returns {Object} Returns the created inverted object.
* @example
*
* _.invert({ 'first': 'moe', 'second': 'larry' });
* // => { 'moe': 'first', 'larry': 'second' }
*/
function invert(object) {
var index = -1,
props = keys(object),
length = props.length,
result = {};
while (++index < length) {
var key = props[index];
result[object[key]] = key;
}
return result;
}
/**
* Checks if `value` is a boolean value.
*
* @static
* @memberOf _
* @category Objects
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if the `value` is a boolean value, else `false`.
* @example
*
* _.isBoolean(null);
* // => false
*/
function isBoolean(value) {
return value === true || value === false || toString.call(value) == boolClass;
}
/**
* Checks if `value` is a date.
*
* @static
* @memberOf _
* @category Objects
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if the `value` is a date, else `false`.
* @example
*
* _.isDate(new Date);
* // => true
*/
function isDate(value) {
return value ? (typeof value == 'object' && toString.call(value) == dateClass) : false;
}
/**
* Checks if `value` is a DOM element.
*
* @static
* @memberOf _
* @category Objects
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if the `value` is a DOM element, else `false`.
* @example
*
* _.isElement(document.body);
* // => true
*/
function isElement(value) {
return value ? value.nodeType === 1 : false;
}
/**
* Checks if `value` is empty. Arrays, strings, or `arguments` objects with a
* length of `0` and objects with no own enumerable properties are considered
* "empty".
*
* @static
* @memberOf _
* @category Objects
* @param {Array|Object|string} value The value to inspect.
* @returns {boolean} Returns `true` if the `value` is empty, else `false`.
* @example
*
* _.isEmpty([1, 2, 3]);
* // => false
*
* _.isEmpty({});
* // => true
*
* _.isEmpty('');
* // => true
*/
function isEmpty(value) {
var result = true;
if (!value) {
return result;
}
var className = toString.call(value),
length = value.length;
if ((className == arrayClass || className == stringClass ||
(support.argsClass ? className == argsClass : isArguments(value))) ||
(className == objectClass && typeof length == 'number' && isFunction(value.splice))) {
return !length;
}
forOwn(value, function() {
return (result = false);
});
return result;
}
/**
* Performs a deep comparison between two values to determine if they are
* equivalent to each other. If a callback is provided it will be executed
* to compare values. If the callback returns `undefined` comparisons will
* be handled by the method instead. The callback is bound to `thisArg` and
* invoked with two arguments; (a, b).
*
* @static
* @memberOf _
* @category Objects
* @param {*} a The value to compare.
* @param {*} b The other value to compare.
* @param {Function} [callback] The function to customize comparing values.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {boolean} Returns `true` if the values are equivalent, else `false`.
* @example
*
* var moe = { 'name': 'moe', 'age': 40 };
* var copy = { 'name': 'moe', 'age': 40 };
*
* moe == copy;
* // => false
*
* _.isEqual(moe, copy);
* // => true
*
* var words = ['hello', 'goodbye'];
* var otherWords = ['hi', 'goodbye'];
*
* _.isEqual(words, otherWords, function(a, b) {
* var reGreet = /^(?:hello|hi)$/i,
* aGreet = _.isString(a) && reGreet.test(a),
* bGreet = _.isString(b) && reGreet.test(b);
*
* return (aGreet || bGreet) ? (aGreet == bGreet) : undefined;
* });
* // => true
*/
function isEqual(a, b, callback, thisArg) {
return baseIsEqual(a, b, typeof callback == 'function' && baseCreateCallback(callback, thisArg, 2));
}
/**
* Checks if `value` is, or can be coerced to, a finite number.
*
* Note: This is not the same as native `isFinite` which will return true for
* booleans and empty strings. See http://es5.github.io/#x15.1.2.5.
*
* @static
* @memberOf _
* @category Objects
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if the `value` is finite, else `false`.
* @example
*
* _.isFinite(-101);
* // => true
*
* _.isFinite('10');
* // => true
*
* _.isFinite(true);
* // => false
*
* _.isFinite('');
* // => false
*
* _.isFinite(Infinity);
* // => false
*/
function isFinite(value) {
return nativeIsFinite(value) && !nativeIsNaN(parseFloat(value));
}
/**
* Checks if `value` is a function.
*
* @static
* @memberOf _
* @category Objects
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if the `value` is a function, else `false`.
* @example
*
* _.isFunction(_);
* // => true
*/
function isFunction(value) {
return typeof value == 'function';
}
// fallback for older versions of Chrome and Safari
if (isFunction(/x/)) {
isFunction = function(value) {
return typeof value == 'function' && toString.call(value) == funcClass;
};
}
/**
* Checks if `value` is the language type of Object.
* (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
*
* @static
* @memberOf _
* @category Objects
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if the `value` is an object, else `false`.
* @example
*
* _.isObject({});
* // => true
*
* _.isObject([1, 2, 3]);
* // => true
*
* _.isObject(1);
* // => false
*/
function isObject(value) {
// check if the value is the ECMAScript language type of Object
// http://es5.github.io/#x8
// and avoid a V8 bug
// http://code.google.com/p/v8/issues/detail?id=2291
return !!(value && objectTypes[typeof value]);
}
/**
* Checks if `value` is `NaN`.
*
* Note: This is not the same as native `isNaN` which will return `true` for
* `undefined` and other non-numeric values. See http://es5.github.io/#x15.1.2.4.
*
* @static
* @memberOf _
* @category Objects
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if the `value` is `NaN`, else `false`.
* @example
*
* _.isNaN(NaN);
* // => true
*
* _.isNaN(new Number(NaN));
* // => true
*
* isNaN(undefined);
* // => true
*
* _.isNaN(undefined);
* // => false
*/
function isNaN(value) {
// `NaN` as a primitive is the only value that is not equal to itself
// (perform the [[Class]] check first to avoid errors with some host objects in IE)
return isNumber(value) && value != +value;
}
/**
* Checks if `value` is `null`.
*
* @static
* @memberOf _
* @category Objects
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if the `value` is `null`, else `false`.
* @example
*
* _.isNull(null);
* // => true
*
* _.isNull(undefined);
* // => false
*/
function isNull(value) {
return value === null;
}
/**
* Checks if `value` is a number.
*
* Note: `NaN` is considered a number. See http://es5.github.io/#x8.5.
*
* @static
* @memberOf _
* @category Objects
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if the `value` is a number, else `false`.
* @example
*
* _.isNumber(8.4 * 5);
* // => true
*/
function isNumber(value) {
return typeof value == 'number' || toString.call(value) == numberClass;
}
/**
* Checks if `value` is an object created by the `Object` constructor.
*
* @static
* @memberOf _
* @category Objects
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
* @example
*
* function Stooge(name, age) {
* this.name = name;
* this.age = age;
* }
*
* _.isPlainObject(new Stooge('moe', 40));
* // => false
*
* _.isPlainObject([1, 2, 3]);
* // => false
*
* _.isPlainObject({ 'name': 'moe', 'age': 40 });
* // => true
*/
var isPlainObject = !getPrototypeOf ? shimIsPlainObject : function(value) {
if (!(value && toString.call(value) == objectClass) || (!support.argsClass && isArguments(value))) {
return false;
}
var valueOf = value.valueOf,
objProto = typeof valueOf == 'function' && (objProto = getPrototypeOf(valueOf)) && getPrototypeOf(objProto);
return objProto
? (value == objProto || getPrototypeOf(value) == objProto)
: shimIsPlainObject(value);
};
/**
* Checks if `value` is a regular expression.
*
* @static
* @memberOf _
* @category Objects
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if the `value` is a regular expression, else `false`.
* @example
*
* _.isRegExp(/moe/);
* // => true
*/
function isRegExp(value) {
return (value && objectTypes[typeof value]) ? toString.call(value) == regexpClass : false;
}
/**
* Checks if `value` is a string.
*
* @static
* @memberOf _
* @category Objects
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if the `value` is a string, else `false`.
* @example
*
* _.isString('moe');
* // => true
*/
function isString(value) {
return typeof value == 'string' || toString.call(value) == stringClass;
}
/**
* Checks if `value` is `undefined`.
*
* @static
* @memberOf _
* @category Objects
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if the `value` is `undefined`, else `false`.
* @example
*
* _.isUndefined(void 0);
* // => true
*/
function isUndefined(value) {
return typeof value == 'undefined';
}
/**
* Recursively merges own enumerable properties of the source object(s), that
* don't resolve to `undefined` into the destination object. Subsequent sources
* will overwrite property assignments of previous sources. If a callback is
* provided it will be executed to produce the merged values of the destination
* and source properties. If the callback returns `undefined` merging will
* be handled by the method instead. The callback is bound to `thisArg` and
* invoked with two arguments; (objectValue, sourceValue).
*
* @static
* @memberOf _
* @category Objects
* @param {Object} object The destination object.
* @param {...Object} [source] The source objects.
* @param {Function} [callback] The function to customize merging properties.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Object} Returns the destination object.
* @example
*
* var names = {
* 'stooges': [
* { 'name': 'moe' },
* { 'name': 'larry' }
* ]
* };
*
* var ages = {
* 'stooges': [
* { 'age': 40 },
* { 'age': 50 }
* ]
* };
*
* _.merge(names, ages);
* // => { 'stooges': [{ 'name': 'moe', 'age': 40 }, { 'name': 'larry', 'age': 50 }] }
*
* var food = {
* 'fruits': ['apple'],
* 'vegetables': ['beet']
* };
*
* var otherFood = {
* 'fruits': ['banana'],
* 'vegetables': ['carrot']
* };
*
* _.merge(food, otherFood, function(a, b) {
* return _.isArray(a) ? a.concat(b) : undefined;
* });
* // => { 'fruits': ['apple', 'banana'], 'vegetables': ['beet', 'carrot] }
*/
function merge(object) {
var args = arguments,
length = 2;
if (!isObject(object)) {
return object;
}
// allows working with `_.reduce` and `_.reduceRight` without using
// their `index` and `collection` arguments
if (typeof args[2] != 'number') {
length = args.length;
}
if (length > 3 && typeof args[length - 2] == 'function') {
var callback = baseCreateCallback(args[--length - 1], args[length--], 2);
} else if (length > 2 && typeof args[length - 1] == 'function') {
callback = args[--length];
}
var sources = nativeSlice.call(arguments, 1, length),
index = -1,
stackA = getArray(),
stackB = getArray();
while (++index < length) {
baseMerge(object, sources[index], callback, stackA, stackB);
}
releaseArray(stackA);
releaseArray(stackB);
return object;
}
/**
* Creates a shallow clone of `object` excluding the specified properties.
* Property names may be specified as individual arguments or as arrays of
* property names. If a callback is provided it will be executed for each
* property of `object` omitting the properties the callback returns truey
* for. The callback is bound to `thisArg` and invoked with three arguments;
* (value, key, object).
*
* @static
* @memberOf _
* @category Objects
* @param {Object} object The source object.
* @param {Function|...string|string[]} [callback] The properties to omit or the
* function called per iteration.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Object} Returns an object without the omitted properties.
* @example
*
* _.omit({ 'name': 'moe', 'age': 40 }, 'age');
* // => { 'name': 'moe' }
*
* _.omit({ 'name': 'moe', 'age': 40 }, function(value) {
* return typeof value == 'number';
* });
* // => { 'name': 'moe' }
*/
function omit(object, callback, thisArg) {
var indexOf = getIndexOf(),
isFunc = typeof callback == 'function',
result = {};
if (isFunc) {
callback = lodash.createCallback(callback, thisArg, 3);
} else {
var props = baseFlatten(arguments, true, false, 1);
}
forIn(object, function(value, key, object) {
if (isFunc
? !callback(value, key, object)
: indexOf(props, key) < 0
) {
result[key] = value;
}
});
return result;
}
/**
* Creates a two dimensional array of an object's key-value pairs,
* i.e. `[[key1, value1], [key2, value2]]`.
*
* @static
* @memberOf _
* @category Objects
* @param {Object} object The object to inspect.
* @returns {Array} Returns new array of key-value pairs.
* @example
*
* _.pairs({ 'moe': 30, 'larry': 40 });
* // => [['moe', 30], ['larry', 40]] (property order is not guaranteed across environments)
*/
function pairs(object) {
var index = -1,
props = keys(object),
length = props.length,
result = Array(length);
while (++index < length) {
var key = props[index];
result[index] = [key, object[key]];
}
return result;
}
/**
* Creates a shallow clone of `object` composed of the specified properties.
* Property names may be specified as individual arguments or as arrays of
* property names. If a callback is provided it will be executed for each
* property of `object` picking the properties the callback returns truey
* for. The callback is bound to `thisArg` and invoked with three arguments;
* (value, key, object).
*
* @static
* @memberOf _
* @category Objects
* @param {Object} object The source object.
* @param {Function|...string|string[]} [callback] The function called per
* iteration or property names to pick, specified as individual property
* names or arrays of property names.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Object} Returns an object composed of the picked properties.
* @example
*
* _.pick({ 'name': 'moe', '_userid': 'moe1' }, 'name');
* // => { 'name': 'moe' }
*
* _.pick({ 'name': 'moe', '_userid': 'moe1' }, function(value, key) {
* return key.charAt(0) != '_';
* });
* // => { 'name': 'moe' }
*/
function pick(object, callback, thisArg) {
var result = {};
if (typeof callback != 'function') {
var index = -1,
props = baseFlatten(arguments, true, false, 1),
length = isObject(object) ? props.length : 0;
while (++index < length) {
var key = props[index];
if (key in object) {
result[key] = object[key];
}
}
} else {
callback = lodash.createCallback(callback, thisArg, 3);
forIn(object, function(value, key, object) {
if (callback(value, key, object)) {
result[key] = value;
}
});
}
return result;
}
/**
* An alternative to `_.reduce` this method transforms `object` to a new
* `accumulator` object which is the result of running each of its elements
* through a callback, with each callback execution potentially mutating
* the `accumulator` object. The callback is bound to `thisArg` and invoked
* with four arguments; (accumulator, value, key, object). Callbacks may exit
* iteration early by explicitly returning `false`.
*
* @static
* @memberOf _
* @category Objects
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} [callback=identity] The function called per iteration.
* @param {*} [accumulator] The custom accumulator value.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {*} Returns the accumulated value.
* @example
*
* var squares = _.transform([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], function(result, num) {
* num *= num;
* if (num % 2) {
* return result.push(num) < 3;
* }
* });
* // => [1, 9, 25]
*
* var mapped = _.transform({ 'a': 1, 'b': 2, 'c': 3 }, function(result, num, key) {
* result[key] = num * 3;
* });
* // => { 'a': 3, 'b': 6, 'c': 9 }
*/
function transform(object, callback, accumulator, thisArg) {
var isArr = isArray(object);
callback = baseCreateCallback(callback, thisArg, 4);
if (accumulator == null) {
if (isArr) {
accumulator = [];
} else {
var ctor = object && object.constructor,
proto = ctor && ctor.prototype;
accumulator = createObject(proto);
}
}
(isArr ? baseEach : forOwn)(object, function(value, index, object) {
return callback(accumulator, value, index, object);
});
return accumulator;
}
/**
* Creates an array composed of the own enumerable property values of `object`.
*
* @static
* @memberOf _
* @category Objects
* @param {Object} object The object to inspect.
* @returns {Array} Returns an array of property values.
* @example
*
* _.values({ 'one': 1, 'two': 2, 'three': 3 });
* // => [1, 2, 3] (property order is not guaranteed across environments)
*/
function values(object) {
var index = -1,
props = keys(object),
length = props.length,
result = Array(length);
while (++index < length) {
result[index] = object[props[index]];
}
return result;
}
/*--------------------------------------------------------------------------*/
/**
* Creates an array of elements from the specified indexes, or keys, of the
* `collection`. Indexes may be specified as individual arguments or as arrays
* of indexes.
*
* @static
* @memberOf _
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {...(number|number[]|string|string[])} [index] The indexes of `collection`
* to retrieve, specified as individual indexes or arrays of indexes.
* @returns {Array} Returns a new array of elements corresponding to the
* provided indexes.
* @example
*
* _.at(['a', 'b', 'c', 'd', 'e'], [0, 2, 4]);
* // => ['a', 'c', 'e']
*
* _.at(['moe', 'larry', 'curly'], 0, 2);
* // => ['moe', 'curly']
*/
function at(collection) {
var args = arguments,
index = -1,
props = baseFlatten(args, true, false, 1),
length = (args[2] && args[2][args[1]] === collection) ? 1 : props.length,
result = Array(length);
if (support.unindexedChars && isString(collection)) {
collection = collection.split('');
}
while(++index < length) {
result[index] = collection[props[index]];
}
return result;
}
/**
* Checks if a given value is present in a collection using strict equality
* for comparisons, i.e. `===`. If `fromIndex` is negative, it is used as the
* offset from the end of the collection.
*
* @static
* @memberOf _
* @alias include
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {*} target The value to check for.
* @param {number} [fromIndex=0] The index to search from.
* @returns {boolean} Returns `true` if the `target` element is found, else `false`.
* @example
*
* _.contains([1, 2, 3], 1);
* // => true
*
* _.contains([1, 2, 3], 1, 2);
* // => false
*
* _.contains({ 'name': 'moe', 'age': 40 }, 'moe');
* // => true
*
* _.contains('curly', 'ur');
* // => true
*/
function contains(collection, target, fromIndex) {
var index = -1,
indexOf = getIndexOf(),
length = collection ? collection.length : 0,
result = false;
fromIndex = (fromIndex < 0 ? nativeMax(0, length + fromIndex) : fromIndex) || 0;
if (isArray(collection)) {
result = indexOf(collection, target, fromIndex) > -1;
} else if (typeof length == 'number') {
result = (isString(collection) ? collection.indexOf(target, fromIndex) : indexOf(collection, target, fromIndex)) > -1;
} else {
baseEach(collection, function(value) {
if (++index >= fromIndex) {
return !(result = value === target);
}
});
}
return result;
}
/**
* Creates an object composed of keys generated from the results of running
* each element of `collection` through the callback. The corresponding value
* of each key is the number of times the key was returned by the callback.
* The callback is bound to `thisArg` and invoked with three arguments;
* (value, index|key, collection).
*
* If a property name is provided for `callback` the created "_.pluck" style
* callback will return the property value of the given element.
*
* If an object is provided for `callback` the created "_.where" style callback
* will return `true` for elements that have the properties of the given object,
* else `false`.
*
* @static
* @memberOf _
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function|Object|string} [callback=identity] The function called
* per iteration. If a property name or object is provided it will be used
* to create a "_.pluck" or "_.where" style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Object} Returns the composed aggregate object.
* @example
*
* _.countBy([4.3, 6.1, 6.4], function(num) { return Math.floor(num); });
* // => { '4': 1, '6': 2 }
*
* _.countBy([4.3, 6.1, 6.4], function(num) { return this.floor(num); }, Math);
* // => { '4': 1, '6': 2 }
*
* _.countBy(['one', 'two', 'three'], 'length');
* // => { '3': 2, '5': 1 }
*/
var countBy = createAggregator(function(result, value, key) {
(hasOwnProperty.call(result, key) ? result[key]++ : result[key] = 1);
});
/**
* Checks if the given callback returns truey value for **all** elements of
* a collection. The callback is bound to `thisArg` and invoked with three
* arguments; (value, index|key, collection).
*
* If a property name is provided for `callback` the created "_.pluck" style
* callback will return the property value of the given element.
*
* If an object is provided for `callback` the created "_.where" style callback
* will return `true` for elements that have the properties of the given object,
* else `false`.
*
* @static
* @memberOf _
* @alias all
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function|Object|string} [callback=identity] The function called
* per iteration. If a property name or object is provided it will be used
* to create a "_.pluck" or "_.where" style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {boolean} Returns `true` if all elements passed the callback check,
* else `false`.
* @example
*
* _.every([true, 1, null, 'yes'], Boolean);
* // => false
*
* var stooges = [
* { 'name': 'moe', 'age': 40 },
* { 'name': 'larry', 'age': 50 }
* ];
*
* // using "_.pluck" callback shorthand
* _.every(stooges, 'age');
* // => true
*
* // using "_.where" callback shorthand
* _.every(stooges, { 'age': 50 });
* // => false
*/
function every(collection, callback, thisArg) {
var result = true;
callback = lodash.createCallback(callback, thisArg, 3);
if (isArray(collection)) {
var index = -1,
length = collection.length;
while (++index < length) {
if (!(result = !!callback(collection[index], index, collection))) {
break;
}
}
} else {
baseEach(collection, function(value, index, collection) {
return (result = !!callback(value, index, collection));
});
}
return result;
}
/**
* Iterates over elements of a collection, returning an array of all elements
* the callback returns truey for. The callback is bound to `thisArg` and
* invoked with three arguments; (value, index|key, collection).
*
* If a property name is provided for `callback` the created "_.pluck" style
* callback will return the property value of the given element.
*
* If an object is provided for `callback` the created "_.where" style callback
* will return `true` for elements that have the properties of the given object,
* else `false`.
*
* @static
* @memberOf _
* @alias select
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function|Object|string} [callback=identity] The function called
* per iteration. If a property name or object is provided it will be used
* to create a "_.pluck" or "_.where" style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Array} Returns a new array of elements that passed the callback check.
* @example
*
* var evens = _.filter([1, 2, 3, 4, 5, 6], function(num) { return num % 2 == 0; });
* // => [2, 4, 6]
*
* var food = [
* { 'name': 'apple', 'organic': false, 'type': 'fruit' },
* { 'name': 'carrot', 'organic': true, 'type': 'vegetable' }
* ];
*
* // using "_.pluck" callback shorthand
* _.filter(food, 'organic');
* // => [{ 'name': 'carrot', 'organic': true, 'type': 'vegetable' }]
*
* // using "_.where" callback shorthand
* _.filter(food, { 'type': 'fruit' });
* // => [{ 'name': 'apple', 'organic': false, 'type': 'fruit' }]
*/
function filter(collection, callback, thisArg) {
var result = [];
callback = lodash.createCallback(callback, thisArg, 3);
if (isArray(collection)) {
var index = -1,
length = collection.length;
while (++index < length) {
var value = collection[index];
if (callback(value, index, collection)) {
result.push(value);
}
}
} else {
baseEach(collection, function(value, index, collection) {
if (callback(value, index, collection)) {
result.push(value);
}
});
}
return result;
}
/**
* Iterates over elements of a collection, returning the first element that
* the callback returns truey for. The callback is bound to `thisArg` and
* invoked with three arguments; (value, index|key, collection).
*
* If a property name is provided for `callback` the created "_.pluck" style
* callback will return the property value of the given element.
*
* If an object is provided for `callback` the created "_.where" style callback
* will return `true` for elements that have the properties of the given object,
* else `false`.
*
* @static
* @memberOf _
* @alias detect, findWhere
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function|Object|string} [callback=identity] The function called
* per iteration. If a property name or object is provided it will be used
* to create a "_.pluck" or "_.where" style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {*} Returns the found element, else `undefined`.
* @example
*
* _.find([1, 2, 3, 4], function(num) {
* return num % 2 == 0;
* });
* // => 2
*
* var food = [
* { 'name': 'apple', 'organic': false, 'type': 'fruit' },
* { 'name': 'banana', 'organic': true, 'type': 'fruit' },
* { 'name': 'beet', 'organic': false, 'type': 'vegetable' }
* ];
*
* // using "_.where" callback shorthand
* _.find(food, { 'type': 'vegetable' });
* // => { 'name': 'beet', 'organic': false, 'type': 'vegetable' }
*
* // using "_.pluck" callback shorthand
* _.find(food, 'organic');
* // => { 'name': 'banana', 'organic': true, 'type': 'fruit' }
*/
function find(collection, callback, thisArg) {
callback = lodash.createCallback(callback, thisArg, 3);
if (isArray(collection)) {
var index = -1,
length = collection.length;
while (++index < length) {
var value = collection[index];
if (callback(value, index, collection)) {
return value;
}
}
} else {
var result;
baseEach(collection, function(value, index, collection) {
if (callback(value, index, collection)) {
result = value;
return false;
}
});
return result;
}
}
/**
* This method is like `_.find` except that it iterates over elements
* of a `collection` from right to left.
*
* @static
* @memberOf _
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function|Object|string} [callback=identity] The function called
* per iteration. If a property name or object is provided it will be used
* to create a "_.pluck" or "_.where" style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {*} Returns the found element, else `undefined`.
* @example
*
* _.findLast([1, 2, 3, 4], function(num) {
* return num % 2 == 1;
* });
* // => 3
*/
function findLast(collection, callback, thisArg) {
var result;
callback = lodash.createCallback(callback, thisArg, 3);
forEachRight(collection, function(value, index, collection) {
if (callback(value, index, collection)) {
result = value;
return false;
}
});
return result;
}
/**
* Iterates over elements of a collection, executing the callback for each
* element. The callback is bound to `thisArg` and invoked with three arguments;
* (value, index|key, collection). Callbacks may exit iteration early by
* explicitly returning `false`.
*
* @static
* @memberOf _
* @alias each
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function} [callback=identity] The function called per iteration.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Array|Object|string} Returns `collection`.
* @example
*
* _([1, 2, 3]).forEach(function(num) { console.log(num); }).join(',');
* // => logs each number and returns '1,2,3'
*
* _.forEach({ 'one': 1, 'two': 2, 'three': 3 }, function(num) { console.log(num); });
* // => logs each number and returns the object (property order is not guaranteed across environments)
*/
function forEach(collection, callback, thisArg) {
if (callback && typeof thisArg == 'undefined' && isArray(collection)) {
var index = -1,
length = collection.length;
while (++index < length) {
if (callback(collection[index], index, collection) === false) {
break;
}
}
} else {
baseEach(collection, callback, thisArg);
}
return collection;
}
/**
* This method is like `_.forEach` except that it iterates over elements
* of a `collection` from right to left.
*
* @static
* @memberOf _
* @alias eachRight
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function} [callback=identity] The function called per iteration.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Array|Object|string} Returns `collection`.
* @example
*
* _([1, 2, 3]).forEachRight(function(num) { console.log(num); }).join(',');
* // => logs each number from right to left and returns '3,2,1'
*/
function forEachRight(collection, callback, thisArg) {
var iterable = collection,
length = collection ? collection.length : 0;
callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3);
if (isArray(collection)) {
while (length--) {
if (callback(collection[length], length, collection) === false) {
break;
}
}
} else {
if (typeof length != 'number') {
var props = keys(collection);
length = props.length;
} else if (support.unindexedChars && isString(collection)) {
iterable = collection.split('');
}
baseEach(collection, function(value, key, collection) {
key = props ? props[--length] : --length;
return callback(iterable[key], key, collection);
});
}
return collection;
}
/**
* Creates an object composed of keys generated from the results of running
* each element of a collection through the callback. The corresponding value
* of each key is an array of the elements responsible for generating the key.
* The callback is bound to `thisArg` and invoked with three arguments;
* (value, index|key, collection).
*
* If a property name is provided for `callback` the created "_.pluck" style
* callback will return the property value of the given element.
*
* If an object is provided for `callback` the created "_.where" style callback
* will return `true` for elements that have the properties of the given object,
* else `false`
*
* @static
* @memberOf _
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function|Object|string} [callback=identity] The function called
* per iteration. If a property name or object is provided it will be used
* to create a "_.pluck" or "_.where" style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Object} Returns the composed aggregate object.
* @example
*
* _.groupBy([4.2, 6.1, 6.4], function(num) { return Math.floor(num); });
* // => { '4': [4.2], '6': [6.1, 6.4] }
*
* _.groupBy([4.2, 6.1, 6.4], function(num) { return this.floor(num); }, Math);
* // => { '4': [4.2], '6': [6.1, 6.4] }
*
* // using "_.pluck" callback shorthand
* _.groupBy(['one', 'two', 'three'], 'length');
* // => { '3': ['one', 'two'], '5': ['three'] }
*/
var groupBy = createAggregator(function(result, value, key) {
(hasOwnProperty.call(result, key) ? result[key] : result[key] = []).push(value);
});
/**
* Creates an object composed of keys generated from the results of running
* each element of the collection through the given callback. The corresponding
* value of each key is the last element responsible for generating the key.
* The callback is bound to `thisArg` and invoked with three arguments;
* (value, index|key, collection).
*
* If a property name is provided for `callback` the created "_.pluck" style
* callback will return the property value of the given element.
*
* If an object is provided for `callback` the created "_.where" style callback
* will return `true` for elements that have the properties of the given object,
* else `false`.
*
* @static
* @memberOf _
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function|Object|string} [callback=identity] The function called
* per iteration. If a property name or object is provided it will be used
* to create a "_.pluck" or "_.where" style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Object} Returns the composed aggregate object.
* @example
*
* var keys = [
* { 'dir': 'left', 'code': 97 },
* { 'dir': 'right', 'code': 100 }
* ];
*
* _.indexBy(keys, 'dir');
* // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }
*
* _.indexBy(keys, function(key) { return String.fromCharCode(key.code); });
* // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
*
* _.indexBy(stooges, function(key) { this.fromCharCode(key.code); }, String);
* // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
*/
var indexBy = createAggregator(function(result, value, key) {
result[key] = value;
});
/**
* Invokes the method named by `methodName` on each element in the `collection`
* returning an array of the results of each invoked method. Additional arguments
* will be provided to each invoked method. If `methodName` is a function it
* will be invoked for, and `this` bound to, each element in the `collection`.
*
* @static
* @memberOf _
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function|string} methodName The name of the method to invoke or
* the function invoked per iteration.
* @param {...*} [arg] Arguments to invoke the method with.
* @returns {Array} Returns a new array of the results of each invoked method.
* @example
*
* _.invoke([[5, 1, 7], [3, 2, 1]], 'sort');
* // => [[1, 5, 7], [1, 2, 3]]
*
* _.invoke([123, 456], String.prototype.split, '');
* // => [['1', '2', '3'], ['4', '5', '6']]
*/
function invoke(collection, methodName) {
var args = nativeSlice.call(arguments, 2),
index = -1,
isFunc = typeof methodName == 'function',
length = collection ? collection.length : 0,
result = Array(typeof length == 'number' ? length : 0);
forEach(collection, function(value) {
result[++index] = (isFunc ? methodName : value[methodName]).apply(value, args);
});
return result;
}
/**
* Creates an array of values by running each element in the collection
* through the callback. The callback is bound to `thisArg` and invoked with
* three arguments; (value, index|key, collection).
*
* If a property name is provided for `callback` the created "_.pluck" style
* callback will return the property value of the given element.
*
* If an object is provided for `callback` the created "_.where" style callback
* will return `true` for elements that have the properties of the given object,
* else `false`.
*
* @static
* @memberOf _
* @alias collect
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function|Object|string} [callback=identity] The function called
* per iteration. If a property name or object is provided it will be used
* to create a "_.pluck" or "_.where" style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Array} Returns a new array of the results of each `callback` execution.
* @example
*
* _.map([1, 2, 3], function(num) { return num * 3; });
* // => [3, 6, 9]
*
* _.map({ 'one': 1, 'two': 2, 'three': 3 }, function(num) { return num * 3; });
* // => [3, 6, 9] (property order is not guaranteed across environments)
*
* var stooges = [
* { 'name': 'moe', 'age': 40 },
* { 'name': 'larry', 'age': 50 }
* ];
*
* // using "_.pluck" callback shorthand
* _.map(stooges, 'name');
* // => ['moe', 'larry']
*/
function map(collection, callback, thisArg) {
var index = -1,
length = collection ? collection.length : 0,
result = Array(typeof length == 'number' ? length : 0);
callback = lodash.createCallback(callback, thisArg, 3);
if (isArray(collection)) {
while (++index < length) {
result[index] = callback(collection[index], index, collection);
}
} else {
baseEach(collection, function(value, key, collection) {
result[++index] = callback(value, key, collection);
});
}
return result;
}
/**
* Retrieves the maximum value of a collection. If the collection is empty or
* falsey `-Infinity` is returned. If a callback is provided it will be executed
* for each value in the collection to generate the criterion by which the value
* is ranked. The callback is bound to `thisArg` and invoked with three
* arguments; (value, index, collection).
*
* If a property name is provided for `callback` the created "_.pluck" style
* callback will return the property value of the given element.
*
* If an object is provided for `callback` the created "_.where" style callback
* will return `true` for elements that have the properties of the given object,
* else `false`.
*
* @static
* @memberOf _
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function|Object|string} [callback=identity] The function called
* per iteration. If a property name or object is provided it will be used
* to create a "_.pluck" or "_.where" style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {*} Returns the maximum value.
* @example
*
* _.max([4, 2, 8, 6]);
* // => 8
*
* var stooges = [
* { 'name': 'moe', 'age': 40 },
* { 'name': 'larry', 'age': 50 }
* ];
*
* _.max(stooges, function(stooge) { return stooge.age; });
* // => { 'name': 'larry', 'age': 50 };
*
* // using "_.pluck" callback shorthand
* _.max(stooges, 'age');
* // => { 'name': 'larry', 'age': 50 };
*/
function max(collection, callback, thisArg) {
var computed = -Infinity,
result = computed;
if (!callback && isArray(collection)) {
var index = -1,
length = collection.length;
while (++index < length) {
var value = collection[index];
if (value > result) {
result = value;
}
}
} else {
callback = (!callback && isString(collection))
? charAtCallback
: lodash.createCallback(callback, thisArg, 3);
baseEach(collection, function(value, index, collection) {
var current = callback(value, index, collection);
if (current > computed) {
computed = current;
result = value;
}
});
}
return result;
}
/**
* Retrieves the minimum value of a collection. If the collection is empty or
* falsey `Infinity` is returned. If a callback is provided it will be executed
* for each value in the collection to generate the criterion by which the value
* is ranked. The callback is bound to `thisArg` and invoked with three
* arguments; (value, index, collection).
*
* If a property name is provided for `callback` the created "_.pluck" style
* callback will return the property value of the given element.
*
* If an object is provided for `callback` the created "_.where" style callback
* will return `true` for elements that have the properties of the given object,
* else `false`.
*
* @static
* @memberOf _
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function|Object|string} [callback=identity] The function called
* per iteration. If a property name or object is provided it will be used
* to create a "_.pluck" or "_.where" style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {*} Returns the minimum value.
* @example
*
* _.min([4, 2, 8, 6]);
* // => 2
*
* var stooges = [
* { 'name': 'moe', 'age': 40 },
* { 'name': 'larry', 'age': 50 }
* ];
*
* _.min(stooges, function(stooge) { return stooge.age; });
* // => { 'name': 'moe', 'age': 40 };
*
* // using "_.pluck" callback shorthand
* _.min(stooges, 'age');
* // => { 'name': 'moe', 'age': 40 };
*/
function min(collection, callback, thisArg) {
var computed = Infinity,
result = computed;
if (!callback && isArray(collection)) {
var index = -1,
length = collection.length;
while (++index < length) {
var value = collection[index];
if (value < result) {
result = value;
}
}
} else {
callback = (!callback && isString(collection))
? charAtCallback
: lodash.createCallback(callback, thisArg, 3);
baseEach(collection, function(value, index, collection) {
var current = callback(value, index, collection);
if (current < computed) {
computed = current;
result = value;
}
});
}
return result;
}
/**
* Retrieves the value of a specified property from all elements in the `collection`.
*
* @static
* @memberOf _
* @type Function
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {string} property The property to pluck.
* @returns {Array} Returns a new array of property values.
* @example
*
* var stooges = [
* { 'name': 'moe', 'age': 40 },
* { 'name': 'larry', 'age': 50 }
* ];
*
* _.pluck(stooges, 'name');
* // => ['moe', 'larry']
*/
var pluck = map;
/**
* Reduces a collection to a value which is the accumulated result of running
* each element in the collection through the callback, where each successive
* callback execution consumes the return value of the previous execution. If
* `accumulator` is not provided the first element of the collection will be
* used as the initial `accumulator` value. The callback is bound to `thisArg`
* and invoked with four arguments; (accumulator, value, index|key, collection).
*
* @static
* @memberOf _
* @alias foldl, inject
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function} [callback=identity] The function called per iteration.
* @param {*} [accumulator] Initial value of the accumulator.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {*} Returns the accumulated value.
* @example
*
* var sum = _.reduce([1, 2, 3], function(sum, num) {
* return sum + num;
* });
* // => 6
*
* var mapped = _.reduce({ 'a': 1, 'b': 2, 'c': 3 }, function(result, num, key) {
* result[key] = num * 3;
* return result;
* }, {});
* // => { 'a': 3, 'b': 6, 'c': 9 }
*/
function reduce(collection, callback, accumulator, thisArg) {
var noaccum = arguments.length < 3;
callback = baseCreateCallback(callback, thisArg, 4);
if (isArray(collection)) {
var index = -1,
length = collection.length;
if (noaccum) {
accumulator = collection[++index];
}
while (++index < length) {
accumulator = callback(accumulator, collection[index], index, collection);
}
} else {
baseEach(collection, function(value, index, collection) {
accumulator = noaccum
? (noaccum = false, value)
: callback(accumulator, value, index, collection)
});
}
return accumulator;
}
/**
* This method is like `_.reduce` except that it iterates over elements
* of a `collection` from right to left.
*
* @static
* @memberOf _
* @alias foldr
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function} [callback=identity] The function called per iteration.
* @param {*} [accumulator] Initial value of the accumulator.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {*} Returns the accumulated value.
* @example
*
* var list = [[0, 1], [2, 3], [4, 5]];
* var flat = _.reduceRight(list, function(a, b) { return a.concat(b); }, []);
* // => [4, 5, 2, 3, 0, 1]
*/
function reduceRight(collection, callback, accumulator, thisArg) {
var noaccum = arguments.length < 3;
callback = baseCreateCallback(callback, thisArg, 4);
forEachRight(collection, function(value, index, collection) {
accumulator = noaccum
? (noaccum = false, value)
: callback(accumulator, value, index, collection);
});
return accumulator;
}
/**
* The opposite of `_.filter` this method returns the elements of a
* collection that the callback does **not** return truey for.
*
* If a property name is provided for `callback` the created "_.pluck" style
* callback will return the property value of the given element.
*
* If an object is provided for `callback` the created "_.where" style callback
* will return `true` for elements that have the properties of the given object,
* else `false`.
*
* @static
* @memberOf _
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function|Object|string} [callback=identity] The function called
* per iteration. If a property name or object is provided it will be used
* to create a "_.pluck" or "_.where" style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Array} Returns a new array of elements that failed the callback check.
* @example
*
* var odds = _.reject([1, 2, 3, 4, 5, 6], function(num) { return num % 2 == 0; });
* // => [1, 3, 5]
*
* var food = [
* { 'name': 'apple', 'organic': false, 'type': 'fruit' },
* { 'name': 'carrot', 'organic': true, 'type': 'vegetable' }
* ];
*
* // using "_.pluck" callback shorthand
* _.reject(food, 'organic');
* // => [{ 'name': 'apple', 'organic': false, 'type': 'fruit' }]
*
* // using "_.where" callback shorthand
* _.reject(food, { 'type': 'fruit' });
* // => [{ 'name': 'carrot', 'organic': true, 'type': 'vegetable' }]
*/
function reject(collection, callback, thisArg) {
callback = lodash.createCallback(callback, thisArg, 3);
return filter(collection, function(value, index, collection) {
return !callback(value, index, collection);
});
}
/**
* Retrieves a random element or `n` random elements from a collection.
*
* @static
* @memberOf _
* @category Collections
* @param {Array|Object|string} collection The collection to sample.
* @param {number} [n] The number of elements to sample.
* @param- {Object} [guard] Allows working with functions, like `_.map`,
* without using their `key` and `object` arguments as sources.
* @returns {Array} Returns the random sample(s) of `collection`.
* @example
*
* _.sample([1, 2, 3, 4]);
* // => 2
*
* _.sample([1, 2, 3, 4], 2);
* // => [3, 1]
*/
function sample(collection, n, guard) {
var length = collection ? collection.length : 0;
if (typeof length != 'number') {
collection = values(collection);
} else if (support.unindexedChars && isString(collection)) {
collection = collection.split('');
}
if (n == null || guard) {
return collection ? collection[random(length - 1)] : undefined;
}
var result = shuffle(collection);
result.length = nativeMin(nativeMax(0, n), result.length);
return result;
}
/**
* Creates an array of shuffled values, using a version of the Fisher-Yates
* shuffle. See http://en.wikipedia.org/wiki/Fisher-Yates_shuffle.
*
* @static
* @memberOf _
* @category Collections
* @param {Array|Object|string} collection The collection to shuffle.
* @returns {Array} Returns a new shuffled collection.
* @example
*
* _.shuffle([1, 2, 3, 4, 5, 6]);
* // => [4, 1, 6, 3, 5, 2]
*/
function shuffle(collection) {
var index = -1,
length = collection ? collection.length : 0,
result = Array(typeof length == 'number' ? length : 0);
forEach(collection, function(value) {
var rand = random(++index);
result[index] = result[rand];
result[rand] = value;
});
return result;
}
/**
* Gets the size of the `collection` by returning `collection.length` for arrays
* and array-like objects or the number of own enumerable properties for objects.
*
* @static
* @memberOf _
* @category Collections
* @param {Array|Object|string} collection The collection to inspect.
* @returns {number} Returns `collection.length` or number of own enumerable properties.
* @example
*
* _.size([1, 2]);
* // => 2
*
* _.size({ 'one': 1, 'two': 2, 'three': 3 });
* // => 3
*
* _.size('curly');
* // => 5
*/
function size(collection) {
var length = collection ? collection.length : 0;
return typeof length == 'number' ? length : keys(collection).length;
}
/**
* Checks if the callback returns a truey value for **any** element of a
* collection. The function returns as soon as it finds a passing value and
* does not iterate over the entire collection. The callback is bound to
* `thisArg` and invoked with three arguments; (value, index|key, collection).
*
* If a property name is provided for `callback` the created "_.pluck" style
* callback will return the property value of the given element.
*
* If an object is provided for `callback` the created "_.where" style callback
* will return `true` for elements that have the properties of the given object,
* else `false`.
*
* @static
* @memberOf _
* @alias any
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function|Object|string} [callback=identity] The function called
* per iteration. If a property name or object is provided it will be used
* to create a "_.pluck" or "_.where" style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {boolean} Returns `true` if any element passed the callback check,
* else `false`.
* @example
*
* _.some([null, 0, 'yes', false], Boolean);
* // => true
*
* var food = [
* { 'name': 'apple', 'organic': false, 'type': 'fruit' },
* { 'name': 'carrot', 'organic': true, 'type': 'vegetable' }
* ];
*
* // using "_.pluck" callback shorthand
* _.some(food, 'organic');
* // => true
*
* // using "_.where" callback shorthand
* _.some(food, { 'type': 'meat' });
* // => false
*/
function some(collection, callback, thisArg) {
var result;
callback = lodash.createCallback(callback, thisArg, 3);
if (isArray(collection)) {
var index = -1,
length = collection.length;
while (++index < length) {
if ((result = callback(collection[index], index, collection))) {
break;
}
}
} else {
baseEach(collection, function(value, index, collection) {
return !(result = callback(value, index, collection));
});
}
return !!result;
}
/**
* Creates an array of elements, sorted in ascending order by the results of
* running each element in a collection through the callback. This method
* performs a stable sort, that is, it will preserve the original sort order
* of equal elements. The callback is bound to `thisArg` and invoked with
* three arguments; (value, index|key, collection).
*
* If a property name is provided for `callback` the created "_.pluck" style
* callback will return the property value of the given element.
*
* If an object is provided for `callback` the created "_.where" style callback
* will return `true` for elements that have the properties of the given object,
* else `false`.
*
* @static
* @memberOf _
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function|Object|string} [callback=identity] The function called
* per iteration. If a property name or object is provided it will be used
* to create a "_.pluck" or "_.where" style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Array} Returns a new array of sorted elements.
* @example
*
* _.sortBy([1, 2, 3], function(num) { return Math.sin(num); });
* // => [3, 1, 2]
*
* _.sortBy([1, 2, 3], function(num) { return this.sin(num); }, Math);
* // => [3, 1, 2]
*
* // using "_.pluck" callback shorthand
* _.sortBy(['banana', 'strawberry', 'apple'], 'length');
* // => ['apple', 'banana', 'strawberry']
*/
function sortBy(collection, callback, thisArg) {
var index = -1,
length = collection ? collection.length : 0,
result = Array(typeof length == 'number' ? length : 0);
callback = lodash.createCallback(callback, thisArg, 3);
forEach(collection, function(value, key, collection) {
var object = result[++index] = getObject();
object.criteria = callback(value, key, collection);
object.index = index;
object.value = value;
});
length = result.length;
result.sort(compareAscending);
while (length--) {
var object = result[length];
result[length] = object.value;
releaseObject(object);
}
return result;
}
/**
* Converts the `collection` to an array.
*
* @static
* @memberOf _
* @category Collections
* @param {Array|Object|string} collection The collection to convert.
* @returns {Array} Returns the new converted array.
* @example
*
* (function() { return _.toArray(arguments).slice(1); })(1, 2, 3, 4);
* // => [2, 3, 4]
*/
function toArray(collection) {
if (collection && typeof collection.length == 'number') {
return (support.unindexedChars && isString(collection))
? collection.split('')
: slice(collection);
}
return values(collection);
}
/**
* Performs a deep comparison of each element in a `collection` to the given
* `properties` object, returning an array of all elements that have equivalent
* property values.
*
* @static
* @memberOf _
* @type Function
* @category Collections
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Object} properties The object of property values to filter by.
* @returns {Array} Returns a new array of elements that have the given properties.
* @example
*
* var stooges = [
* { 'name': 'curly', 'age': 30, 'quotes': ['Oh, a wise guy, eh?', 'Poifect!'] },
* { 'name': 'moe', 'age': 40, 'quotes': ['Spread out!', 'You knucklehead!'] }
* ];
*
* _.where(stooges, { 'age': 40 });
* // => [{ 'name': 'moe', 'age': 40, 'quotes': ['Spread out!', 'You knucklehead!'] }]
*
* _.where(stooges, { 'quotes': ['Poifect!'] });
* // => [{ 'name': 'curly', 'age': 30, 'quotes': ['Oh, a wise guy, eh?', 'Poifect!'] }]
*/
var where = filter;
/*--------------------------------------------------------------------------*/
/**
* Creates an array with all falsey values removed. The values `false`, `null`,
* `0`, `""`, `undefined`, and `NaN` are all falsey.
*
* @static
* @memberOf _
* @category Arrays
* @param {Array} array The array to compact.
* @returns {Array} Returns a new array of filtered values.
* @example
*
* _.compact([0, 1, false, 2, '', 3]);
* // => [1, 2, 3]
*/
function compact(array) {
var index = -1,
length = array ? array.length : 0,
result = [];
while (++index < length) {
var value = array[index];
if (value) {
result.push(value);
}
}
return result;
}
/**
* Creates an array excluding all values of the provided arrays using strict
* equality for comparisons, i.e. `===`.
*
* @static
* @memberOf _
* @category Arrays
* @param {Array} array The array to process.
* @param {...Array} [array] The arrays of values to exclude.
* @returns {Array} Returns a new array of filtered values.
* @example
*
* _.difference([1, 2, 3, 4, 5], [5, 2, 10]);
* // => [1, 3, 4]
*/
function difference(array) {
var index = -1,
indexOf = getIndexOf(),
length = array ? array.length : 0,
seen = baseFlatten(arguments, true, true, 1),
result = [];
var isLarge = length >= largeArraySize && indexOf === baseIndexOf;
if (isLarge) {
var cache = createCache(seen);
if (cache) {
indexOf = cacheIndexOf;
seen = cache;
} else {
isLarge = false;
}
}
while (++index < length) {
var value = array[index];
if (indexOf(seen, value) < 0) {
result.push(value);
}
}
if (isLarge) {
releaseObject(seen);
}
return result;
}
/**
* This method is like `_.find` except that it returns the index of the first
* element that passes the callback check, instead of the element itself.
*
* @static
* @memberOf _
* @category Arrays
* @param {Array} array The array to search.
* @param {Function|Object|string} [callback=identity] The function called
* per iteration. If a property name or object is provided it will be used
* to create a "_.pluck" or "_.where" style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {number} Returns the index of the found element, else `-1`.
* @example
*
* _.findIndex(['apple', 'banana', 'beet'], function(food) {
* return /^b/.test(food);
* });
* // => 1
*/
function findIndex(array, callback, thisArg) {
var index = -1,
length = array ? array.length : 0;
callback = lodash.createCallback(callback, thisArg, 3);
while (++index < length) {
if (callback(array[index], index, array)) {
return index;
}
}
return -1;
}
/**
* This method is like `_.findIndex` except that it iterates over elements
* of a `collection` from right to left.
*
* @static
* @memberOf _
* @category Arrays
* @param {Array} array The array to search.
* @param {Function|Object|string} [callback=identity] The function called
* per iteration. If a property name or object is provided it will be used
* to create a "_.pluck" or "_.where" style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {number} Returns the index of the found element, else `-1`.
* @example
*
* _.findLastIndex(['apple', 'banana', 'beet'], function(food) {
* return /^b/.test(food);
* });
* // => 2
*/
function findLastIndex(array, callback, thisArg) {
var length = array ? array.length : 0;
callback = lodash.createCallback(callback, thisArg, 3);
while (length--) {
if (callback(array[length], length, array)) {
return length;
}
}
return -1;
}
/**
* Gets the first element or first `n` elements of an array. If a callback
* is provided elements at the beginning of the array are returned as long
* as the callback returns truey. The callback is bound to `thisArg` and
* invoked with three arguments; (value, index, array).
*
* If a property name is provided for `callback` the created "_.pluck" style
* callback will return the property value of the given element.
*
* If an object is provided for `callback` the created "_.where" style callback
* will return `true` for elements that have the properties of the given object,
* else `false`.
*
* @static
* @memberOf _
* @alias head, take
* @category Arrays
* @param {Array} array The array to query.
* @param {Function|Object|number|string} [callback] The function called
* per element or the number of elements to return. If a property name or
* object is provided it will be used to create a "_.pluck" or "_.where"
* style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {*} Returns the first element(s) of `array`.
* @example
*
* _.first([1, 2, 3]);
* // => 1
*
* _.first([1, 2, 3], 2);
* // => [1, 2]
*
* _.first([1, 2, 3], function(num) {
* return num < 3;
* });
* // => [1, 2]
*
* var food = [
* { 'name': 'banana', 'organic': true },
* { 'name': 'beet', 'organic': false },
* ];
*
* // using "_.pluck" callback shorthand
* _.first(food, 'organic');
* // => [{ 'name': 'banana', 'organic': true }]
*
* var food = [
* { 'name': 'apple', 'type': 'fruit' },
* { 'name': 'banana', 'type': 'fruit' },
* { 'name': 'beet', 'type': 'vegetable' }
* ];
*
* // using "_.where" callback shorthand
* _.first(food, { 'type': 'fruit' });
* // => [{ 'name': 'apple', 'type': 'fruit' }, { 'name': 'banana', 'type': 'fruit' }]
*/
function first(array, callback, thisArg) {
var n = 0,
length = array ? array.length : 0;
if (typeof callback != 'number' && callback != null) {
var index = -1;
callback = lodash.createCallback(callback, thisArg, 3);
while (++index < length && callback(array[index], index, array)) {
n++;
}
} else {
n = callback;
if (n == null || thisArg) {
return array ? array[0] : undefined;
}
}
return slice(array, 0, nativeMin(nativeMax(0, n), length));
}
/**
* Flattens a nested array (the nesting can be to any depth). If `isShallow`
* is truey, the array will only be flattened a single level. If a callback
* is provided each element of the array is passed through the callback before
* flattening. The callback is bound to `thisArg` and invoked with three
* arguments; (value, index, array).
*
* If a property name is provided for `callback` the created "_.pluck" style
* callback will return the property value of the given element.
*
* If an object is provided for `callback` the created "_.where" style callback
* will return `true` for elements that have the properties of the given object,
* else `false`.
*
* @static
* @memberOf _
* @category Arrays
* @param {Array} array The array to flatten.
* @param {boolean} [isShallow=false] A flag to restrict flattening to a single level.
* @param {Function|Object|string} [callback=identity] The function called
* per iteration. If a property name or object is provided it will be used
* to create a "_.pluck" or "_.where" style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Array} Returns a new flattened array.
* @example
*
* _.flatten([1, [2], [3, [[4]]]]);
* // => [1, 2, 3, 4];
*
* _.flatten([1, [2], [3, [[4]]]], true);
* // => [1, 2, 3, [[4]]];
*
* var stooges = [
* { 'name': 'curly', 'quotes': ['Oh, a wise guy, eh?', 'Poifect!'] },
* { 'name': 'moe', 'quotes': ['Spread out!', 'You knucklehead!'] }
* ];
*
* // using "_.pluck" callback shorthand
* _.flatten(stooges, 'quotes');
* // => ['Oh, a wise guy, eh?', 'Poifect!', 'Spread out!', 'You knucklehead!']
*/
function flatten(array, isShallow, callback, thisArg) {
// juggle arguments
if (typeof isShallow != 'boolean' && isShallow != null) {
thisArg = callback;
callback = !(thisArg && thisArg[isShallow] === array) ? isShallow : null;
isShallow = false;
}
if (callback != null) {
array = map(array, callback, thisArg);
}
return baseFlatten(array, isShallow);
}
/**
* Gets the index at which the first occurrence of `value` is found using
* strict equality for comparisons, i.e. `===`. If the array is already sorted
* providing `true` for `fromIndex` will run a faster binary search.
*
* @static
* @memberOf _
* @category Arrays
* @param {Array} array The array to search.
* @param {*} value The value to search for.
* @param {boolean|number} [fromIndex=0] The index to search from or `true`
* to perform a binary search on a sorted array.
* @returns {number} Returns the index of the matched value or `-1`.
* @example
*
* _.indexOf([1, 2, 3, 1, 2, 3], 2);
* // => 1
*
* _.indexOf([1, 2, 3, 1, 2, 3], 2, 3);
* // => 4
*
* _.indexOf([1, 1, 2, 2, 3, 3], 2, true);
* // => 2
*/
function indexOf(array, value, fromIndex) {
if (typeof fromIndex == 'number') {
var length = array ? array.length : 0;
fromIndex = (fromIndex < 0 ? nativeMax(0, length + fromIndex) : fromIndex || 0);
} else if (fromIndex) {
var index = sortedIndex(array, value);
return array[index] === value ? index : -1;
}
return baseIndexOf(array, value, fromIndex);
}
/**
* Gets all but the last element or last `n` elements of an array. If a
* callback is provided elements at the end of the array are excluded from
* the result as long as the callback returns truey. The callback is bound
* to `thisArg` and invoked with three arguments; (value, index, array).
*
* If a property name is provided for `callback` the created "_.pluck" style
* callback will return the property value of the given element.
*
* If an object is provided for `callback` the created "_.where" style callback
* will return `true` for elements that have the properties of the given object,
* else `false`.
*
* @static
* @memberOf _
* @category Arrays
* @param {Array} array The array to query.
* @param {Function|Object|number|string} [callback=1] The function called
* per element or the number of elements to exclude. If a property name or
* object is provided it will be used to create a "_.pluck" or "_.where"
* style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Array} Returns a slice of `array`.
* @example
*
* _.initial([1, 2, 3]);
* // => [1, 2]
*
* _.initial([1, 2, 3], 2);
* // => [1]
*
* _.initial([1, 2, 3], function(num) {
* return num > 1;
* });
* // => [1]
*
* var food = [
* { 'name': 'beet', 'organic': false },
* { 'name': 'carrot', 'organic': true }
* ];
*
* // using "_.pluck" callback shorthand
* _.initial(food, 'organic');
* // => [{ 'name': 'beet', 'organic': false }]
*
* var food = [
* { 'name': 'banana', 'type': 'fruit' },
* { 'name': 'beet', 'type': 'vegetable' },
* { 'name': 'carrot', 'type': 'vegetable' }
* ];
*
* // using "_.where" callback shorthand
* _.initial(food, { 'type': 'vegetable' });
* // => [{ 'name': 'banana', 'type': 'fruit' }]
*/
function initial(array, callback, thisArg) {
var n = 0,
length = array ? array.length : 0;
if (typeof callback != 'number' && callback != null) {
var index = length;
callback = lodash.createCallback(callback, thisArg, 3);
while (index-- && callback(array[index], index, array)) {
n++;
}
} else {
n = (callback == null || thisArg) ? 1 : callback || n;
}
return slice(array, 0, nativeMin(nativeMax(0, length - n), length));
}
/**
* Creates an array of unique values present in all provided arrays using
* strict equality for comparisons, i.e. `===`.
*
* @static
* @memberOf _
* @category Arrays
* @param {...Array} [array] The arrays to inspect.
* @returns {Array} Returns an array of composite values.
* @example
*
* _.intersection([1, 2, 3], [101, 2, 1, 10], [2, 1]);
* // => [1, 2]
*/
function intersection(array) {
var args = arguments,
argsLength = args.length,
argsIndex = -1,
caches = getArray(),
index = -1,
indexOf = getIndexOf(),
length = array ? array.length : 0,
result = [],
seen = getArray();
while (++argsIndex < argsLength) {
var value = args[argsIndex];
caches[argsIndex] = indexOf === baseIndexOf &&
(value ? value.length : 0) >= largeArraySize &&
createCache(argsIndex ? args[argsIndex] : seen);
}
outer:
while (++index < length) {
var cache = caches[0];
value = array[index];
if ((cache ? cacheIndexOf(cache, value) : indexOf(seen, value)) < 0) {
argsIndex = argsLength;
(cache || seen).push(value);
while (--argsIndex) {
cache = caches[argsIndex];
if ((cache ? cacheIndexOf(cache, value) : indexOf(args[argsIndex], value)) < 0) {
continue outer;
}
}
result.push(value);
}
}
while (argsLength--) {
cache = caches[argsLength];
if (cache) {
releaseObject(cache);
}
}
releaseArray(caches);
releaseArray(seen);
return result;
}
/**
* Gets the last element or last `n` elements of an array. If a callback is
* provided elements at the end of the array are returned as long as the
* callback returns truey. The callback is bound to `thisArg` and invoked
* with three arguments; (value, index, array).
*
* If a property name is provided for `callback` the created "_.pluck" style
* callback will return the property value of the given element.
*
* If an object is provided for `callback` the created "_.where" style callback
* will return `true` for elements that have the properties of the given object,
* else `false`.
*
* @static
* @memberOf _
* @category Arrays
* @param {Array} array The array to query.
* @param {Function|Object|number|string} [callback] The function called
* per element or the number of elements to return. If a property name or
* object is provided it will be used to create a "_.pluck" or "_.where"
* style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {*} Returns the last element(s) of `array`.
* @example
*
* _.last([1, 2, 3]);
* // => 3
*
* _.last([1, 2, 3], 2);
* // => [2, 3]
*
* _.last([1, 2, 3], function(num) {
* return num > 1;
* });
* // => [2, 3]
*
* var food = [
* { 'name': 'beet', 'organic': false },
* { 'name': 'carrot', 'organic': true }
* ];
*
* // using "_.pluck" callback shorthand
* _.last(food, 'organic');
* // => [{ 'name': 'carrot', 'organic': true }]
*
* var food = [
* { 'name': 'banana', 'type': 'fruit' },
* { 'name': 'beet', 'type': 'vegetable' },
* { 'name': 'carrot', 'type': 'vegetable' }
* ];
*
* // using "_.where" callback shorthand
* _.last(food, { 'type': 'vegetable' });
* // => [{ 'name': 'beet', 'type': 'vegetable' }, { 'name': 'carrot', 'type': 'vegetable' }]
*/
function last(array, callback, thisArg) {
var n = 0,
length = array ? array.length : 0;
if (typeof callback != 'number' && callback != null) {
var index = length;
callback = lodash.createCallback(callback, thisArg, 3);
while (index-- && callback(array[index], index, array)) {
n++;
}
} else {
n = callback;
if (n == null || thisArg) {
return array ? array[length - 1] : undefined;
}
}
return slice(array, nativeMax(0, length - n));
}
/**
* Gets the index at which the last occurrence of `value` is found using strict
* equality for comparisons, i.e. `===`. If `fromIndex` is negative, it is used
* as the offset from the end of the collection.
*
* @static
* @memberOf _
* @category Arrays
* @param {Array} array The array to search.
* @param {*} value The value to search for.
* @param {number} [fromIndex=array.length-1] The index to search from.
* @returns {number} Returns the index of the matched value or `-1`.
* @example
*
* _.lastIndexOf([1, 2, 3, 1, 2, 3], 2);
* // => 4
*
* _.lastIndexOf([1, 2, 3, 1, 2, 3], 2, 3);
* // => 1
*/
function lastIndexOf(array, value, fromIndex) {
var index = array ? array.length : 0;
if (typeof fromIndex == 'number') {
index = (fromIndex < 0 ? nativeMax(0, index + fromIndex) : nativeMin(fromIndex, index - 1)) + 1;
}
while (index--) {
if (array[index] === value) {
return index;
}
}
return -1;
}
/**
* Removes all provided values from the given array using strict equality for
* comparisons, i.e. `===`.
*
* @static
* @memberOf _
* @category Arrays
* @param {Array} array The array to modify.
* @param {...*} [value] The values to remove.
* @returns {Array} Returns `array`.
* @example
*
* var array = [1, 2, 3, 1, 2, 3];
* _.pull(array, 2, 3);
* console.log(array);
* // => [1, 1]
*/
function pull(array) {
var args = arguments,
argsIndex = 0,
argsLength = args.length,
length = array ? array.length : 0;
while (++argsIndex < argsLength) {
var index = -1,
value = args[argsIndex];
while (++index < length) {
if (array[index] === value) {
splice.call(array, index--, 1);
length--;
}
}
}
return array;
}
/**
* Creates an array of numbers (positive and/or negative) progressing from
* `start` up to but not including `end`. If `start` is less than `stop` a
* zero-length range is created unless a negative `step` is specified.
*
* @static
* @memberOf _
* @category Arrays
* @param {number} [start=0] The start of the range.
* @param {number} end The end of the range.
* @param {number} [step=1] The value to increment or decrement by.
* @returns {Array} Returns a new range array.
* @example
*
* _.range(10);
* // => [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
*
* _.range(1, 11);
* // => [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
*
* _.range(0, 30, 5);
* // => [0, 5, 10, 15, 20, 25]
*
* _.range(0, -10, -1);
* // => [0, -1, -2, -3, -4, -5, -6, -7, -8, -9]
*
* _.range(1, 4, 0);
* // => [1, 1, 1]
*
* _.range(0);
* // => []
*/
function range(start, end, step) {
start = +start || 0;
step = typeof step == 'number' ? step : (+step || 1);
if (end == null) {
end = start;
start = 0;
}
// use `Array(length)` so engines, like Chakra and V8, avoid slower modes
// http://youtu.be/XAqIpGU8ZZk#t=17m25s
var index = -1,
length = nativeMax(0, ceil((end - start) / (step || 1))),
result = Array(length);
while (++index < length) {
result[index] = start;
start += step;
}
return result;
}
/**
* Removes all elements from an array that the callback returns truey for
* and returns an array of removed elements. The callback is bound to `thisArg`
* and invoked with three arguments; (value, index, array).
*
* If a property name is provided for `callback` the created "_.pluck" style
* callback will return the property value of the given element.
*
* If an object is provided for `callback` the created "_.where" style callback
* will return `true` for elements that have the properties of the given object,
* else `false`.
*
* @static
* @memberOf _
* @category Arrays
* @param {Array} array The array to modify.
* @param {Function|Object|string} [callback=identity] The function called
* per iteration. If a property name or object is provided it will be used
* to create a "_.pluck" or "_.where" style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Array} Returns a new array of removed elements.
* @example
*
* var array = [1, 2, 3, 4, 5, 6];
* var evens = _.remove(array, function(num) { return num % 2 == 0; });
*
* console.log(array);
* // => [1, 3, 5]
*
* console.log(evens);
* // => [2, 4, 6]
*/
function remove(array, callback, thisArg) {
var index = -1,
length = array ? array.length : 0,
result = [];
callback = lodash.createCallback(callback, thisArg, 3);
while (++index < length) {
var value = array[index];
if (callback(value, index, array)) {
result.push(value);
splice.call(array, index--, 1);
length--;
}
}
return result;
}
/**
* The opposite of `_.initial` this method gets all but the first element or
* first `n` elements of an array. If a callback function is provided elements
* at the beginning of the array are excluded from the result as long as the
* callback returns truey. The callback is bound to `thisArg` and invoked
* with three arguments; (value, index, array).
*
* If a property name is provided for `callback` the created "_.pluck" style
* callback will return the property value of the given element.
*
* If an object is provided for `callback` the created "_.where" style callback
* will return `true` for elements that have the properties of the given object,
* else `false`.
*
* @static
* @memberOf _
* @alias drop, tail
* @category Arrays
* @param {Array} array The array to query.
* @param {Function|Object|number|string} [callback=1] The function called
* per element or the number of elements to exclude. If a property name or
* object is provided it will be used to create a "_.pluck" or "_.where"
* style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Array} Returns a slice of `array`.
* @example
*
* _.rest([1, 2, 3]);
* // => [2, 3]
*
* _.rest([1, 2, 3], 2);
* // => [3]
*
* _.rest([1, 2, 3], function(num) {
* return num < 3;
* });
* // => [3]
*
* var food = [
* { 'name': 'banana', 'organic': true },
* { 'name': 'beet', 'organic': false },
* ];
*
* // using "_.pluck" callback shorthand
* _.rest(food, 'organic');
* // => [{ 'name': 'beet', 'organic': false }]
*
* var food = [
* { 'name': 'apple', 'type': 'fruit' },
* { 'name': 'banana', 'type': 'fruit' },
* { 'name': 'beet', 'type': 'vegetable' }
* ];
*
* // using "_.where" callback shorthand
* _.rest(food, { 'type': 'fruit' });
* // => [{ 'name': 'beet', 'type': 'vegetable' }]
*/
function rest(array, callback, thisArg) {
if (typeof callback != 'number' && callback != null) {
var n = 0,
index = -1,
length = array ? array.length : 0;
callback = lodash.createCallback(callback, thisArg, 3);
while (++index < length && callback(array[index], index, array)) {
n++;
}
} else {
n = (callback == null || thisArg) ? 1 : nativeMax(0, callback);
}
return slice(array, n);
}
/**
* Uses a binary search to determine the smallest index at which a value
* should be inserted into a given sorted array in order to maintain the sort
* order of the array. If a callback is provided it will be executed for
* `value` and each element of `array` to compute their sort ranking. The
* callback is bound to `thisArg` and invoked with one argument; (value).
*
* If a property name is provided for `callback` the created "_.pluck" style
* callback will return the property value of the given element.
*
* If an object is provided for `callback` the created "_.where" style callback
* will return `true` for elements that have the properties of the given object,
* else `false`.
*
* @static
* @memberOf _
* @category Arrays
* @param {Array} array The array to inspect.
* @param {*} value The value to evaluate.
* @param {Function|Object|string} [callback=identity] The function called
* per iteration. If a property name or object is provided it will be used
* to create a "_.pluck" or "_.where" style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {number} Returns the index at which `value` should be inserted
* into `array`.
* @example
*
* _.sortedIndex([20, 30, 50], 40);
* // => 2
*
* // using "_.pluck" callback shorthand
* _.sortedIndex([{ 'x': 20 }, { 'x': 30 }, { 'x': 50 }], { 'x': 40 }, 'x');
* // => 2
*
* var dict = {
* 'wordToNumber': { 'twenty': 20, 'thirty': 30, 'fourty': 40, 'fifty': 50 }
* };
*
* _.sortedIndex(['twenty', 'thirty', 'fifty'], 'fourty', function(word) {
* return dict.wordToNumber[word];
* });
* // => 2
*
* _.sortedIndex(['twenty', 'thirty', 'fifty'], 'fourty', function(word) {
* return this.wordToNumber[word];
* }, dict);
* // => 2
*/
function sortedIndex(array, value, callback, thisArg) {
var low = 0,
high = array ? array.length : low;
// explicitly reference `identity` for better inlining in Firefox
callback = callback ? lodash.createCallback(callback, thisArg, 1) : identity;
value = callback(value);
while (low < high) {
var mid = (low + high) >>> 1;
(callback(array[mid]) < value)
? low = mid + 1
: high = mid;
}
return low;
}
/**
* Creates an array of unique values, in order, of the provided arrays using
* strict equality for comparisons, i.e. `===`.
*
* @static
* @memberOf _
* @category Arrays
* @param {...Array} [array] The arrays to inspect.
* @returns {Array} Returns an array of composite values.
* @example
*
* _.union([1, 2, 3], [101, 2, 1, 10], [2, 1]);
* // => [1, 2, 3, 101, 10]
*/
function union(array) {
return baseUniq(baseFlatten(arguments, true, true));
}
/**
* Creates a duplicate-value-free version of an array using strict equality
* for comparisons, i.e. `===`. If the array is sorted, providing
* `true` for `isSorted` will use a faster algorithm. If a callback is provided
* each element of `array` is passed through the callback before uniqueness
* is computed. The callback is bound to `thisArg` and invoked with three
* arguments; (value, index, array).
*
* If a property name is provided for `callback` the created "_.pluck" style
* callback will return the property value of the given element.
*
* If an object is provided for `callback` the created "_.where" style callback
* will return `true` for elements that have the properties of the given object,
* else `false`.
*
* @static
* @memberOf _
* @alias unique
* @category Arrays
* @param {Array} array The array to process.
* @param {boolean} [isSorted=false] A flag to indicate that `array` is sorted.
* @param {Function|Object|string} [callback=identity] The function called
* per iteration. If a property name or object is provided it will be used
* to create a "_.pluck" or "_.where" style callback, respectively.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Array} Returns a duplicate-value-free array.
* @example
*
* _.uniq([1, 2, 1, 3, 1]);
* // => [1, 2, 3]
*
* _.uniq([1, 1, 2, 2, 3], true);
* // => [1, 2, 3]
*
* _.uniq(['A', 'b', 'C', 'a', 'B', 'c'], function(letter) { return letter.toLowerCase(); });
* // => ['A', 'b', 'C']
*
* _.uniq([1, 2.5, 3, 1.5, 2, 3.5], function(num) { return this.floor(num); }, Math);
* // => [1, 2.5, 3]
*
* // using "_.pluck" callback shorthand
* _.uniq([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
* // => [{ 'x': 1 }, { 'x': 2 }]
*/
function uniq(array, isSorted, callback, thisArg) {
// juggle arguments
if (typeof isSorted != 'boolean' && isSorted != null) {
thisArg = callback;
callback = !(thisArg && thisArg[isSorted] === array) ? isSorted : null;
isSorted = false;
}
if (callback != null) {
callback = lodash.createCallback(callback, thisArg, 3);
}
return baseUniq(array, isSorted, callback);
}
/**
* Creates an array excluding all provided values using strict equality for
* comparisons, i.e. `===`.
*
* @static
* @memberOf _
* @category Arrays
* @param {Array} array The array to filter.
* @param {...*} [value] The values to exclude.
* @returns {Array} Returns a new array of filtered values.
* @example
*
* _.without([1, 2, 1, 0, 3, 1, 4], 0, 1);
* // => [2, 3, 4]
*/
function without(array) {
return difference(array, nativeSlice.call(arguments, 1));
}
/**
* Creates an array of grouped elements, the first of which contains the first
* elements of the given arrays, the second of which contains the second
* elements of the given arrays, and so on.
*
* @static
* @memberOf _
* @alias unzip
* @category Arrays
* @param {...Array} [array] Arrays to process.
* @returns {Array} Returns a new array of grouped elements.
* @example
*
* _.zip(['moe', 'larry'], [30, 40], [true, false]);
* // => [['moe', 30, true], ['larry', 40, false]]
*/
function zip() {
var array = arguments.length > 1 ? arguments : arguments[0],
index = -1,
length = array ? max(pluck(array, 'length')) : 0,
result = Array(length < 0 ? 0 : length);
while (++index < length) {
result[index] = pluck(array, index);
}
return result;
}
/**
* Creates an object composed from arrays of `keys` and `values`. Provide
* either a single two dimensional array, i.e. `[[key1, value1], [key2, value2]]`
* or two arrays, one of `keys` and one of corresponding `values`.
*
* @static
* @memberOf _
* @alias object
* @category Arrays
* @param {Array} keys The array of keys.
* @param {Array} [values=[]] The array of values.
* @returns {Object} Returns an object composed of the given keys and
* corresponding values.
* @example
*
* _.zipObject(['moe', 'larry'], [30, 40]);
* // => { 'moe': 30, 'larry': 40 }
*/
function zipObject(keys, values) {
var index = -1,
length = keys ? keys.length : 0,
result = {};
while (++index < length) {
var key = keys[index];
if (values) {
result[key] = values[index];
} else if (key) {
result[key[0]] = key[1];
}
}
return result;
}
/*--------------------------------------------------------------------------*/
/**
* Creates a function that executes `func`, with the `this` binding and
* arguments of the created function, only after being called `n` times.
*
* @static
* @memberOf _
* @category Functions
* @param {number} n The number of times the function must be called before
* `func` is executed.
* @param {Function} func The function to restrict.
* @returns {Function} Returns the new restricted function.
* @example
*
* var saves = ['profile', 'settings'];
*
* var done = _.after(saves.length, function() {
* console.log('Done saving!');
* });
*
* _.forEach(saves, function(type) {
* asyncSave({ 'type': type, 'complete': done });
* });
* // => logs 'Done saving!', after all saves have completed
*/
function after(n, func) {
if (!isFunction(func)) {
throw new TypeError;
}
return function() {
if (--n < 1) {
return func.apply(this, arguments);
}
};
}
/**
* Creates a function that, when called, invokes `func` with the `this`
* binding of `thisArg` and prepends any additional `bind` arguments to those
* provided to the bound function.
*
* @static
* @memberOf _
* @category Functions
* @param {Function} func The function to bind.
* @param {*} [thisArg] The `this` binding of `func`.
* @param {...*} [arg] Arguments to be partially applied.
* @returns {Function} Returns the new bound function.
* @example
*
* var func = function(greeting) {
* return greeting + ' ' + this.name;
* };
*
* func = _.bind(func, { 'name': 'moe' }, 'hi');
* func();
* // => 'hi moe'
*/
function bind(func, thisArg) {
return arguments.length > 2
? createBound(func, 17, nativeSlice.call(arguments, 2), null, thisArg)
: createBound(func, 1, null, null, thisArg);
}
/**
* Binds methods of an object to the object itself, overwriting the existing
* method. Method names may be specified as individual arguments or as arrays
* of method names. If no method names are provided all the function properties
* of `object` will be bound.
*
* @static
* @memberOf _
* @category Functions
* @param {Object} object The object to bind and assign the bound methods to.
* @param {...string} [methodName] The object method names to
* bind, specified as individual method names or arrays of method names.
* @returns {Object} Returns `object`.
* @example
*
* var view = {
* 'label': 'docs',
* 'onClick': function() { console.log('clicked ' + this.label); }
* };
*
* _.bindAll(view);
* jQuery('#docs').on('click', view.onClick);
* // => logs 'clicked docs', when the button is clicked
*/
function bindAll(object) {
var funcs = arguments.length > 1 ? baseFlatten(arguments, true, false, 1) : functions(object),
index = -1,
length = funcs.length;
while (++index < length) {
var key = funcs[index];
object[key] = createBound(object[key], 1, null, null, object);
}
return object;
}
/**
* Creates a function that, when called, invokes the method at `object[key]`
* and prepends any additional `bindKey` arguments to those provided to the bound
* function. This method differs from `_.bind` by allowing bound functions to
* reference methods that will be redefined or don't yet exist.
* See http://michaux.ca/articles/lazy-function-definition-pattern.
*
* @static
* @memberOf _
* @category Functions
* @param {Object} object The object the method belongs to.
* @param {string} key The key of the method.
* @param {...*} [arg] Arguments to be partially applied.
* @returns {Function} Returns the new bound function.
* @example
*
* var object = {
* 'name': 'moe',
* 'greet': function(greeting) {
* return greeting + ' ' + this.name;
* }
* };
*
* var func = _.bindKey(object, 'greet', 'hi');
* func();
* // => 'hi moe'
*
* object.greet = function(greeting) {
* return greeting + ', ' + this.name + '!';
* };
*
* func();
* // => 'hi, moe!'
*/
function bindKey(object, key) {
return arguments.length > 2
? createBound(key, 19, nativeSlice.call(arguments, 2), null, object)
: createBound(key, 3, null, null, object);
}
/**
* Creates a function that is the composition of the provided functions,
* where each function consumes the return value of the function that follows.
* For example, composing the functions `f()`, `g()`, and `h()` produces `f(g(h()))`.
* Each function is executed with the `this` binding of the composed function.
*
* @static
* @memberOf _
* @category Functions
* @param {...Function} [func] Functions to compose.
* @returns {Function} Returns the new composed function.
* @example
*
* var realNameMap = {
* 'curly': 'jerome'
* };
*
* var format = function(name) {
* name = realNameMap[name.toLowerCase()] || name;
* return name.charAt(0).toUpperCase() + name.slice(1).toLowerCase();
* };
*
* var greet = function(formatted) {
* return 'Hiya ' + formatted + '!';
* };
*
* var welcome = _.compose(greet, format);
* welcome('curly');
* // => 'Hiya Jerome!'
*/
function compose() {
var funcs = arguments,
length = funcs.length;
while (length--) {
if (!isFunction(funcs[length])) {
throw new TypeError;
}
}
return function() {
var args = arguments,
length = funcs.length;
while (length--) {
args = [funcs[length].apply(this, args)];
}
return args[0];
};
}
/**
* Produces a callback bound to an optional `thisArg`. If `func` is a property
* name the created callback will return the property value for a given element.
* If `func` is an object the created callback will return `true` for elements
* that contain the equivalent object properties, otherwise it will return `false`.
*
* @static
* @memberOf _
* @category Functions
* @param {*} [func=identity] The value to convert to a callback.
* @param {*} [thisArg] The `this` binding of the created callback.
* @param {number} [argCount] The number of arguments the callback accepts.
* @returns {Function} Returns a callback function.
* @example
*
* var stooges = [
* { 'name': 'moe', 'age': 40 },
* { 'name': 'larry', 'age': 50 }
* ];
*
* // wrap to create custom callback shorthands
* _.createCallback = _.wrap(_.createCallback, function(func, callback, thisArg) {
* var match = /^(.+?)__([gl]t)(.+)$/.exec(callback);
* return !match ? func(callback, thisArg) : function(object) {
* return match[2] == 'gt' ? object[match[1]] > match[3] : object[match[1]] < match[3];
* };
* });
*
* _.filter(stooges, 'age__gt45');
* // => [{ 'name': 'larry', 'age': 50 }]
*/
function createCallback(func, thisArg, argCount) {
var type = typeof func;
if (func == null || type == 'function') {
return baseCreateCallback(func, thisArg, argCount);
}
// handle "_.pluck" style callback shorthands
if (type != 'object') {
return function(object) {
return object[func];
};
}
var props = keys(func),
key = props[0],
a = func[key];
// handle "_.where" style callback shorthands
if (props.length == 1 && a === a && !isObject(a)) {
// fast path the common case of providing an object with a single
// property containing a primitive value
return function(object) {
var b = object[key];
return a === b && (a !== 0 || (1 / a == 1 / b));
};
}
return function(object) {
var length = props.length,
result = false;
while (length--) {
if (!(result = baseIsEqual(object[props[length]], func[props[length]], null, true))) {
break;
}
}
return result;
};
}
/**
* Creates a function which accepts one or more arguments of `func` that when
* invoked either executes `func` returning its result, if all `func` arguments
* have been provided, or returns a function that accepts one or more of the
* remaining `func` arguments, and so on. The arity of `func` can be specified
* if `func.length` is not sufficient.
*
* @static
* @memberOf _
* @category Functions
* @param {Function} func The function to curry.
* @param {number} [arity=func.length] The arity of `func`.
* @returns {Function} Returns the new curried function.
* @example
*
* var curried = _.curry(function(a, b, c) {
* console.log(a + b + c);
* });
*
* curried(1)(2)(3);
* // => 6
*
* curried(1, 2)(3);
* // => 6
*
* curried(1, 2, 3);
* // => 6
*/
function curry(func, arity) {
arity = typeof arity == 'number' ? arity : (+arity || func.length);
return createBound(func, 4, null, null, null, arity);
}
/**
* Creates a function that will delay the execution of `func` until after
* `wait` milliseconds have elapsed since the last time it was invoked.
* Provide an options object to indicate that `func` should be invoked on
* the leading and/or trailing edge of the `wait` timeout. Subsequent calls
* to the debounced function will return the result of the last `func` call.
*
* Note: If `leading` and `trailing` options are `true` `func` will be called
* on the trailing edge of the timeout only if the the debounced function is
* invoked more than once during the `wait` timeout.
*
* @static
* @memberOf _
* @category Functions
* @param {Function} func The function to debounce.
* @param {number} wait The number of milliseconds to delay.
* @param {Object} [options] The options object.
* @param {boolean} [options.leading=false] Specify execution on the leading edge of the timeout.
* @param {number} [options.maxWait] The maximum time `func` is allowed to be delayed before it's called.
* @param {boolean} [options.trailing=true] Specify execution on the trailing edge of the timeout.
* @returns {Function} Returns the new debounced function.
* @example
*
* // avoid costly calculations while the window size is in flux
* var lazyLayout = _.debounce(calculateLayout, 150);
* jQuery(window).on('resize', lazyLayout);
*
* // execute `sendMail` when the click event is fired, debouncing subsequent calls
* jQuery('#postbox').on('click', _.debounce(sendMail, 300, {
* 'leading': true,
* 'trailing': false
* });
*
* // ensure `batchLog` is executed once after 1 second of debounced calls
* var source = new EventSource('/stream');
* source.addEventListener('message', _.debounce(batchLog, 250, {
* 'maxWait': 1000
* }, false);
*/
function debounce(func, wait, options) {
var args,
maxTimeoutId,
result,
stamp,
thisArg,
timeoutId,
trailingCall,
lastCalled = 0,
maxWait = false,
trailing = true;
if (!isFunction(func)) {
throw new TypeError;
}
wait = nativeMax(0, wait) || 0;
if (options === true) {
var leading = true;
trailing = false;
} else if (isObject(options)) {
leading = options.leading;
maxWait = 'maxWait' in options && (nativeMax(wait, options.maxWait) || 0);
trailing = 'trailing' in options ? options.trailing : trailing;
}
var delayed = function() {
var remaining = wait - (new Date - stamp);
if (remaining <= 0) {
if (maxTimeoutId) {
clearTimeout(maxTimeoutId);
}
var isCalled = trailingCall;
maxTimeoutId = timeoutId = trailingCall = undefined;
if (isCalled) {
lastCalled = +new Date;
result = func.apply(thisArg, args);
}
} else {
timeoutId = setTimeout(delayed, remaining);
}
};
var maxDelayed = function() {
if (timeoutId) {
clearTimeout(timeoutId);
}
maxTimeoutId = timeoutId = trailingCall = undefined;
if (trailing || (maxWait !== wait)) {
lastCalled = +new Date;
result = func.apply(thisArg, args);
}
};
return function() {
args = arguments;
stamp = +new Date;
thisArg = this;
trailingCall = trailing && (timeoutId || !leading);
if (maxWait === false) {
var leadingCall = leading && !timeoutId;
} else {
if (!maxTimeoutId && !leading) {
lastCalled = stamp;
}
var remaining = maxWait - (stamp - lastCalled);
if (remaining <= 0) {
if (maxTimeoutId) {
maxTimeoutId = clearTimeout(maxTimeoutId);
}
lastCalled = stamp;
result = func.apply(thisArg, args);
}
else if (!maxTimeoutId) {
maxTimeoutId = setTimeout(maxDelayed, remaining);
}
}
if (!timeoutId && wait !== maxWait) {
timeoutId = setTimeout(delayed, wait);
}
if (leadingCall) {
result = func.apply(thisArg, args);
}
return result;
};
}
/**
* Defers executing the `func` function until the current call stack has cleared.
* Additional arguments will be provided to `func` when it is invoked.
*
* @static
* @memberOf _
* @category Functions
* @param {Function} func The function to defer.
* @param {...*} [arg] Arguments to invoke the function with.
* @returns {number} Returns the timer id.
* @example
*
* _.defer(function() { console.log('deferred'); });
* // returns from the function before 'deferred' is logged
*/
function defer(func) {
if (!isFunction(func)) {
throw new TypeError;
}
var args = nativeSlice.call(arguments, 1);
return setTimeout(function() { func.apply(undefined, args); }, 1);
}
// use `setImmediate` if available in Node.js
if (isV8 && moduleExports && typeof setImmediate == 'function') {
defer = function(func) {
if (!isFunction(func)) {
throw new TypeError;
}
return setImmediate.apply(context, arguments);
};
}
/**
* Executes the `func` function after `wait` milliseconds. Additional arguments
* will be provided to `func` when it is invoked.
*
* @static
* @memberOf _
* @category Functions
* @param {Function} func The function to delay.
* @param {number} wait The number of milliseconds to delay execution.
* @param {...*} [arg] Arguments to invoke the function with.
* @returns {number} Returns the timer id.
* @example
*
* var log = _.bind(console.log, console);
* _.delay(log, 1000, 'logged later');
* // => 'logged later' (Appears after one second.)
*/
function delay(func, wait) {
if (!isFunction(func)) {
throw new TypeError;
}
var args = nativeSlice.call(arguments, 2);
return setTimeout(function() { func.apply(undefined, args); }, wait);
}
/**
* Creates a function that memoizes the result of `func`. If `resolver` is
* provided it will be used to determine the cache key for storing the result
* based on the arguments provided to the memoized function. By default, the
* first argument provided to the memoized function is used as the cache key.
* The `func` is executed with the `this` binding of the memoized function.
* The result cache is exposed as the `cache` property on the memoized function.
*
* @static
* @memberOf _
* @category Functions
* @param {Function} func The function to have its output memoized.
* @param {Function} [resolver] A function used to resolve the cache key.
* @returns {Function} Returns the new memoizing function.
* @example
*
* var fibonacci = _.memoize(function(n) {
* return n < 2 ? n : fibonacci(n - 1) + fibonacci(n - 2);
* });
*
* var data = {
* 'moe': { 'name': 'moe', 'age': 40 },
* 'curly': { 'name': 'curly', 'age': 60 }
* };
*
* // modifying the result cache
* var stooge = _.memoize(function(name) { return data[name]; }, _.identity);
* stooge('curly');
* // => { 'name': 'curly', 'age': 60 }
*
* stooge.cache.curly.name = 'jerome';
* stooge('curly');
* // => { 'name': 'jerome', 'age': 60 }
*/
function memoize(func, resolver) {
if (!isFunction(func)) {
throw new TypeError;
}
var memoized = function() {
var cache = memoized.cache,
key = resolver ? resolver.apply(this, arguments) : keyPrefix + arguments[0];
return hasOwnProperty.call(cache, key)
? cache[key]
: (cache[key] = func.apply(this, arguments));
}
memoized.cache = {};
return memoized;
}
/**
* Creates a function that is restricted to execute `func` once. Repeat calls to
* the function will return the value of the first call. The `func` is executed
* with the `this` binding of the created function.
*
* @static
* @memberOf _
* @category Functions
* @param {Function} func The function to restrict.
* @returns {Function} Returns the new restricted function.
* @example
*
* var initialize = _.once(createApplication);
* initialize();
* initialize();
* // `initialize` executes `createApplication` once
*/
function once(func) {
var ran,
result;
if (!isFunction(func)) {
throw new TypeError;
}
return function() {
if (ran) {
return result;
}
ran = true;
result = func.apply(this, arguments);
// clear the `func` variable so the function may be garbage collected
func = null;
return result;
};
}
/**
* Creates a function that, when called, invokes `func` with any additional
* `partial` arguments prepended to those provided to the new function. This
* method is similar to `_.bind` except it does **not** alter the `this` binding.
*
* @static
* @memberOf _
* @category Functions
* @param {Function} func The function to partially apply arguments to.
* @param {...*} [arg] Arguments to be partially applied.
* @returns {Function} Returns the new partially applied function.
* @example
*
* var greet = function(greeting, name) { return greeting + ' ' + name; };
* var hi = _.partial(greet, 'hi');
* hi('moe');
* // => 'hi moe'
*/
function partial(func) {
return createBound(func, 16, nativeSlice.call(arguments, 1));
}
/**
* This method is like `_.partial` except that `partial` arguments are
* appended to those provided to the new function.
*
* @static
* @memberOf _
* @category Functions
* @param {Function} func The function to partially apply arguments to.
* @param {...*} [arg] Arguments to be partially applied.
* @returns {Function} Returns the new partially applied function.
* @example
*
* var defaultsDeep = _.partialRight(_.merge, _.defaults);
*
* var options = {
* 'variable': 'data',
* 'imports': { 'jq': $ }
* };
*
* defaultsDeep(options, _.templateSettings);
*
* options.variable
* // => 'data'
*
* options.imports
* // => { '_': _, 'jq': $ }
*/
function partialRight(func) {
return createBound(func, 32, null, nativeSlice.call(arguments, 1));
}
/**
* Creates a function that, when executed, will only call the `func` function
* at most once per every `wait` milliseconds. Provide an options object to
* indicate that `func` should be invoked on the leading and/or trailing edge
* of the `wait` timeout. Subsequent calls to the throttled function will
* return the result of the last `func` call.
*
* Note: If `leading` and `trailing` options are `true` `func` will be called
* on the trailing edge of the timeout only if the the throttled function is
* invoked more than once during the `wait` timeout.
*
* @static
* @memberOf _
* @category Functions
* @param {Function} func The function to throttle.
* @param {number} wait The number of milliseconds to throttle executions to.
* @param {Object} [options] The options object.
* @param {boolean} [options.leading=true] Specify execution on the leading edge of the timeout.
* @param {boolean} [options.trailing=true] Specify execution on the trailing edge of the timeout.
* @returns {Function} Returns the new throttled function.
* @example
*
* // avoid excessively updating the position while scrolling
* var throttled = _.throttle(updatePosition, 100);
* jQuery(window).on('scroll', throttled);
*
* // execute `renewToken` when the click event is fired, but not more than once every 5 minutes
* jQuery('.interactive').on('click', _.throttle(renewToken, 300000, {
* 'trailing': false
* }));
*/
function throttle(func, wait, options) {
var leading = true,
trailing = true;
if (!isFunction(func)) {
throw new TypeError;
}
if (options === false) {
leading = false;
} else if (isObject(options)) {
leading = 'leading' in options ? options.leading : leading;
trailing = 'trailing' in options ? options.trailing : trailing;
}
options = getObject();
options.leading = leading;
options.maxWait = wait;
options.trailing = trailing;
var result = debounce(func, wait, options);
releaseObject(options);
return result;
}
/**
* Creates a function that provides `value` to the wrapper function as its
* first argument. Additional arguments provided to the function are appended
* to those provided to the wrapper function. The wrapper is executed with
* the `this` binding of the created function.
*
* @static
* @memberOf _
* @category Functions
* @param {*} value The value to wrap.
* @param {Function} wrapper The wrapper function.
* @returns {Function} Returns the new function.
* @example
*
* var hello = function(name) { return 'hello ' + name; };
* hello = _.wrap(hello, function(func) {
* return 'before, ' + func('moe') + ', after';
* });
* hello();
* // => 'before, hello moe, after'
*/
function wrap(value, wrapper) {
if (!isFunction(wrapper)) {
throw new TypeError;
}
return function() {
var args = [value];
push.apply(args, arguments);
return wrapper.apply(this, args);
};
}
/*--------------------------------------------------------------------------*/
/**
* Converts the characters `&`, `<`, `>`, `"`, and `'` in `string` to their
* corresponding HTML entities.
*
* @static
* @memberOf _
* @category Utilities
* @param {string} string The string to escape.
* @returns {string} Returns the escaped string.
* @example
*
* _.escape('Moe, Larry & Curly');
* // => 'Moe, Larry & Curly'
*/
function escape(string) {
return string == null ? '' : String(string).replace(reUnescapedHtml, escapeHtmlChar);
}
/**
* This method returns the first argument provided to it.
*
* @static
* @memberOf _
* @category Utilities
* @param {*} value Any value.
* @returns {*} Returns `value`.
* @example
*
* var moe = { 'name': 'moe' };
* moe === _.identity(moe);
* // => true
*/
function identity(value) {
return value;
}
/**
* Adds function properties of a source object to the `lodash` function and
* chainable wrapper.
*
* @static
* @memberOf _
* @category Utilities
* @param {Object} object The object of function properties to add to `lodash`.
* @param {Object} object The object of function properties to add to `lodash`.
* @example
*
* _.mixin({
* 'capitalize': function(string) {
* return string.charAt(0).toUpperCase() + string.slice(1).toLowerCase();
* }
* });
*
* _.capitalize('moe');
* // => 'Moe'
*
* _('moe').capitalize();
* // => 'Moe'
*/
function mixin(object, source) {
var ctor = object,
isFunc = !source || isFunction(ctor);
if (!source) {
ctor = lodashWrapper;
source = object;
object = lodash;
}
forEach(functions(source), function(methodName) {
var func = object[methodName] = source[methodName];
if (isFunc) {
ctor.prototype[methodName] = function() {
var value = this.__wrapped__,
args = [value];
push.apply(args, arguments);
var result = func.apply(object, args);
return (value && typeof value == 'object' && value === result)
? this
: new ctor(result);
};
}
});
}
/**
* Reverts the '_' variable to its previous value and returns a reference to
* the `lodash` function.
*
* @static
* @memberOf _
* @category Utilities
* @returns {Function} Returns the `lodash` function.
* @example
*
* var lodash = _.noConflict();
*/
function noConflict() {
context._ = oldDash;
return this;
}
/**
* Converts the given value into an integer of the specified radix.
* If `radix` is `undefined` or `0` a `radix` of `10` is used unless the
* `value` is a hexadecimal, in which case a `radix` of `16` is used.
*
* Note: This method avoids differences in native ES3 and ES5 `parseInt`
* implementations. See http://es5.github.io/#E.
*
* @static
* @memberOf _
* @category Utilities
* @param {string} value The value to parse.
* @param {number} [radix] The radix used to interpret the value to parse.
* @returns {number} Returns the new integer value.
* @example
*
* _.parseInt('08');
* // => 8
*/
var parseInt = nativeParseInt(whitespace + '08') == 8 ? nativeParseInt : function(value, radix) {
// Firefox and Opera still follow the ES3 specified implementation of `parseInt`
return nativeParseInt(isString(value) ? value.replace(reLeadingSpacesAndZeros, '') : value, radix || 0);
};
/**
* Produces a random number between `min` and `max` (inclusive). If only one
* argument is provided a number between `0` and the given number will be
* returned. If `floating` is truey or either `min` or `max` are floats a
* floating-point number will be returned instead of an integer.
*
* @static
* @memberOf _
* @category Utilities
* @param {number} [min=0] The minimum possible value.
* @param {number} [max=1] The maximum possible value.
* @param {boolean} [floating=false] Specify returning a floating-point number.
* @returns {number} Returns a random number.
* @example
*
* _.random(0, 5);
* // => an integer between 0 and 5
*
* _.random(5);
* // => also an integer between 0 and 5
*
* _.random(5, true);
* // => a floating-point number between 0 and 5
*
* _.random(1.2, 5.2);
* // => a floating-point number between 1.2 and 5.2
*/
function random(min, max, floating) {
var noMin = min == null,
noMax = max == null;
if (floating == null) {
if (typeof min == 'boolean' && noMax) {
floating = min;
min = 1;
}
else if (!noMax && typeof max == 'boolean') {
floating = max;
noMax = true;
}
}
if (noMin && noMax) {
max = 1;
}
min = +min || 0;
if (noMax) {
max = min;
min = 0;
} else {
max = +max || 0;
}
var rand = nativeRandom();
return (floating || min % 1 || max % 1)
? min + nativeMin(rand * (max - min + parseFloat('1e-' + ((rand +'').length - 1))), max)
: min + floor(rand * (max - min + 1));
}
/**
* Resolves the value of `property` on `object`. If `property` is a function
* it will be invoked with the `this` binding of `object` and its result returned,
* else the property value is returned. If `object` is falsey then `undefined`
* is returned.
*
* @static
* @memberOf _
* @category Utilities
* @param {Object} object The object to inspect.
* @param {string} property The property to get the value of.
* @returns {*} Returns the resolved value.
* @example
*
* var object = {
* 'cheese': 'crumpets',
* 'stuff': function() {
* return 'nonsense';
* }
* };
*
* _.result(object, 'cheese');
* // => 'crumpets'
*
* _.result(object, 'stuff');
* // => 'nonsense'
*/
function result(object, property) {
if (object) {
var value = object[property];
return isFunction(value) ? object[property]() : value;
}
}
/**
* A micro-templating method that handles arbitrary delimiters, preserves
* whitespace, and correctly escapes quotes within interpolated code.
*
* Note: In the development build, `_.template` utilizes sourceURLs for easier
* debugging. See http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl
*
* For more information on precompiling templates see:
* http://lodash.com/#custom-builds
*
* For more information on Chrome extension sandboxes see:
* http://developer.chrome.com/stable/extensions/sandboxingEval.html
*
* @static
* @memberOf _
* @category Utilities
* @param {string} text The template text.
* @param {Object} data The data object used to populate the text.
* @param {Object} [options] The options object.
* @param {RegExp} [options.escape] The "escape" delimiter.
* @param {RegExp} [options.evaluate] The "evaluate" delimiter.
* @param {Object} [options.imports] An object to import into the template as local variables.
* @param {RegExp} [options.interpolate] The "interpolate" delimiter.
* @param {string} [sourceURL] The sourceURL of the template's compiled source.
* @param {string} [variable] The data object variable name.
* @returns {Function|string} Returns a compiled function when no `data` object
* is given, else it returns the interpolated text.
* @example
*
* // using the "interpolate" delimiter to create a compiled template
* var compiled = _.template('hello <%= name %>');
* compiled({ 'name': 'moe' });
* // => 'hello moe'
*
* // using the "escape" delimiter to escape HTML in data property values
* _.template('<b><%- value %></b>', { 'value': '<script>' });
* // => '<b><script></b>'
*
* // using the "evaluate" delimiter to generate HTML
* var list = '<% _.forEach(people, function(name) { %><li><%- name %></li><% }); %>';
* _.template(list, { 'people': ['moe', 'larry'] });
* // => '<li>moe</li><li>larry</li>'
*
* // using the ES6 delimiter as an alternative to the default "interpolate" delimiter
* _.template('hello ${ name }', { 'name': 'curly' });
* // => 'hello curly'
*
* // using the internal `print` function in "evaluate" delimiters
* _.template('<% print("hello " + name); %>!', { 'name': 'larry' });
* // => 'hello larry!'
*
* // using a custom template delimiters
* _.templateSettings = {
* 'interpolate': /{{([\s\S]+?)}}/g
* };
*
* _.template('hello {{ name }}!', { 'name': 'mustache' });
* // => 'hello mustache!'
*
* // using the `imports` option to import jQuery
* var list = '<% $.each(people, function(name) { %><li><%- name %></li><% }); %>';
* _.template(list, { 'people': ['moe', 'larry'] }, { 'imports': { '$': jQuery } });
* // => '<li>moe</li><li>larry</li>'
*
* // using the `sourceURL` option to specify a custom sourceURL for the template
* var compiled = _.template('hello <%= name %>', null, { 'sourceURL': '/basic/greeting.jst' });
* compiled(data);
* // => find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector
*
* // using the `variable` option to ensure a with-statement isn't used in the compiled template
* var compiled = _.template('hi <%= data.name %>!', null, { 'variable': 'data' });
* compiled.source;
* // => function(data) {
* var __t, __p = '', __e = _.escape;
* __p += 'hi ' + ((__t = ( data.name )) == null ? '' : __t) + '!';
* return __p;
* }
*
* // using the `source` property to inline compiled templates for meaningful
* // line numbers in error messages and a stack trace
* fs.writeFileSync(path.join(cwd, 'jst.js'), '\
* var JST = {\
* "main": ' + _.template(mainText).source + '\
* };\
* ');
*/
function template(text, data, options) {
// based on John Resig's `tmpl` implementation
// http://ejohn.org/blog/javascript-micro-templating/
// and Laura Doktorova's doT.js
// https://github.com/olado/doT
var settings = lodash.templateSettings;
text || (text = '');
// avoid missing dependencies when `iteratorTemplate` is not defined
options = defaults({}, options, settings);
var imports = defaults({}, options.imports, settings.imports),
importsKeys = keys(imports),
importsValues = values(imports);
var isEvaluating,
index = 0,
interpolate = options.interpolate || reNoMatch,
source = "__p += '";
// compile the regexp to match each delimiter
var reDelimiters = RegExp(
(options.escape || reNoMatch).source + '|' +
interpolate.source + '|' +
(interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' +
(options.evaluate || reNoMatch).source + '|$'
, 'g');
text.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {
interpolateValue || (interpolateValue = esTemplateValue);
// escape characters that cannot be included in string literals
source += text.slice(index, offset).replace(reUnescapedString, escapeStringChar);
// replace delimiters with snippets
if (escapeValue) {
source += "' +\n__e(" + escapeValue + ") +\n'";
}
if (evaluateValue) {
isEvaluating = true;
source += "';\n" + evaluateValue + ";\n__p += '";
}
if (interpolateValue) {
source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'";
}
index = offset + match.length;
// the JS engine embedded in Adobe products requires returning the `match`
// string in order to produce the correct `offset` value
return match;
});
source += "';\n";
// if `variable` is not specified, wrap a with-statement around the generated
// code to add the data object to the top of the scope chain
var variable = options.variable,
hasVariable = variable;
if (!hasVariable) {
variable = 'obj';
source = 'with (' + variable + ') {\n' + source + '\n}\n';
}
// cleanup code by stripping empty strings
source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source)
.replace(reEmptyStringMiddle, '$1')
.replace(reEmptyStringTrailing, '$1;');
// frame code as the function body
source = 'function(' + variable + ') {\n' +
(hasVariable ? '' : variable + ' || (' + variable + ' = {});\n') +
"var __t, __p = '', __e = _.escape" +
(isEvaluating
? ', __j = Array.prototype.join;\n' +
"function print() { __p += __j.call(arguments, '') }\n"
: ';\n'
) +
source +
'return __p\n}';
// Use a sourceURL for easier debugging.
// http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl
var sourceURL = '\n/*\n//# sourceURL=' + (options.sourceURL || '/lodash/template/source[' + (templateCounter++) + ']') + '\n*/';
try {
var result = Function(importsKeys, 'return ' + source + sourceURL).apply(undefined, importsValues);
} catch(e) {
e.source = source;
throw e;
}
if (data) {
return result(data);
}
// provide the compiled function's source by its `toString` method, in
// supported environments, or the `source` property as a convenience for
// inlining compiled templates during the build process
result.source = source;
return result;
}
/**
* Executes the callback `n` times, returning an array of the results
* of each callback execution. The callback is bound to `thisArg` and invoked
* with one argument; (index).
*
* @static
* @memberOf _
* @category Utilities
* @param {number} n The number of times to execute the callback.
* @param {Function} callback The function called per iteration.
* @param {*} [thisArg] The `this` binding of `callback`.
* @returns {Array} Returns an array of the results of each `callback` execution.
* @example
*
* var diceRolls = _.times(3, _.partial(_.random, 1, 6));
* // => [3, 6, 4]
*
* _.times(3, function(n) { mage.castSpell(n); });
* // => calls `mage.castSpell(n)` three times, passing `n` of `0`, `1`, and `2` respectively
*
* _.times(3, function(n) { this.cast(n); }, mage);
* // => also calls `mage.castSpell(n)` three times
*/
function times(n, callback, thisArg) {
n = (n = +n) > -1 ? n : 0;
var index = -1,
result = Array(n);
callback = baseCreateCallback(callback, thisArg, 1);
while (++index < n) {
result[index] = callback(index);
}
return result;
}
/**
* The inverse of `_.escape` this method converts the HTML entities
* `&`, `<`, `>`, `"`, and `'` in `string` to their
* corresponding characters.
*
* @static
* @memberOf _
* @category Utilities
* @param {string} string The string to unescape.
* @returns {string} Returns the unescaped string.
* @example
*
* _.unescape('Moe, Larry & Curly');
* // => 'Moe, Larry & Curly'
*/
function unescape(string) {
return string == null ? '' : String(string).replace(reEscapedHtml, unescapeHtmlChar);
}
/**
* Generates a unique ID. If `prefix` is provided the ID will be appended to it.
*
* @static
* @memberOf _
* @category Utilities
* @param {string} [prefix] The value to prefix the ID with.
* @returns {string} Returns the unique ID.
* @example
*
* _.uniqueId('contact_');
* // => 'contact_104'
*
* _.uniqueId();
* // => '105'
*/
function uniqueId(prefix) {
var id = ++idCounter;
return String(prefix == null ? '' : prefix) + id;
}
/*--------------------------------------------------------------------------*/
/**
* Creates a `lodash` object that wraps the given value.
*
* @static
* @memberOf _
* @category Chaining
* @param {*} value The value to wrap.
* @returns {Object} Returns the wrapper object.
* @example
*
* var stooges = [
* { 'name': 'moe', 'age': 40 },
* { 'name': 'larry', 'age': 50 },
* { 'name': 'curly', 'age': 60 }
* ];
*
* var youngest = _.chain(stooges)
* .sortBy(function(stooge) { return stooge.age; })
* .map(function(stooge) { return stooge.name + ' is ' + stooge.age; })
* .first();
* // => 'moe is 40'
*/
function chain(value) {
value = new lodashWrapper(value);
value.__chain__ = true;
return value;
}
/**
* Invokes `interceptor` with the `value` as the first argument and then
* returns `value`. The purpose of this method is to "tap into" a method
* chain in order to perform operations on intermediate results within
* the chain.
*
* @static
* @memberOf _
* @category Chaining
* @param {*} value The value to provide to `interceptor`.
* @param {Function} interceptor The function to invoke.
* @returns {*} Returns `value`.
* @example
*
* _([1, 2, 3, 4])
* .filter(function(num) { return num % 2 == 0; })
* .tap(function(array) { console.log(array); })
* .map(function(num) { return num * num; })
* .value();
* // => // [2, 4] (logged)
* // => [4, 16]
*/
function tap(value, interceptor) {
interceptor(value);
return value;
}
/**
* Enables method chaining on the wrapper object.
*
* @name chain
* @memberOf _
* @category Chaining
* @returns {*} Returns the wrapper object.
* @example
*
* var sum = _([1, 2, 3])
* .chain()
* .reduce(function(sum, num) { return sum + num; })
* .value()
* // => 6`
*/
function wrapperChain() {
this.__chain__ = true;
return this;
}
/**
* Produces the `toString` result of the wrapped value.
*
* @name toString
* @memberOf _
* @category Chaining
* @returns {string} Returns the string result.
* @example
*
* _([1, 2, 3]).toString();
* // => '1,2,3'
*/
function wrapperToString() {
return String(this.__wrapped__);
}
/**
* Extracts the wrapped value.
*
* @name valueOf
* @memberOf _
* @alias value
* @category Chaining
* @returns {*} Returns the wrapped value.
* @example
*
* _([1, 2, 3]).valueOf();
* // => [1, 2, 3]
*/
function wrapperValueOf() {
return this.__wrapped__;
}
/*--------------------------------------------------------------------------*/
// add functions that return wrapped values when chaining
lodash.after = after;
lodash.assign = assign;
lodash.at = at;
lodash.bind = bind;
lodash.bindAll = bindAll;
lodash.bindKey = bindKey;
lodash.chain = chain;
lodash.compact = compact;
lodash.compose = compose;
lodash.countBy = countBy;
lodash.createCallback = createCallback;
lodash.curry = curry;
lodash.debounce = debounce;
lodash.defaults = defaults;
lodash.defer = defer;
lodash.delay = delay;
lodash.difference = difference;
lodash.filter = filter;
lodash.flatten = flatten;
lodash.forEach = forEach;
lodash.forEachRight = forEachRight;
lodash.forIn = forIn;
lodash.forInRight = forInRight;
lodash.forOwn = forOwn;
lodash.forOwnRight = forOwnRight;
lodash.functions = functions;
lodash.groupBy = groupBy;
lodash.indexBy = indexBy;
lodash.initial = initial;
lodash.intersection = intersection;
lodash.invert = invert;
lodash.invoke = invoke;
lodash.keys = keys;
lodash.map = map;
lodash.max = max;
lodash.memoize = memoize;
lodash.merge = merge;
lodash.min = min;
lodash.omit = omit;
lodash.once = once;
lodash.pairs = pairs;
lodash.partial = partial;
lodash.partialRight = partialRight;
lodash.pick = pick;
lodash.pluck = pluck;
lodash.pull = pull;
lodash.range = range;
lodash.reject = reject;
lodash.remove = remove;
lodash.rest = rest;
lodash.shuffle = shuffle;
lodash.sortBy = sortBy;
lodash.tap = tap;
lodash.throttle = throttle;
lodash.times = times;
lodash.toArray = toArray;
lodash.transform = transform;
lodash.union = union;
lodash.uniq = uniq;
lodash.values = values;
lodash.where = where;
lodash.without = without;
lodash.wrap = wrap;
lodash.zip = zip;
lodash.zipObject = zipObject;
// add aliases
lodash.collect = map;
lodash.drop = rest;
lodash.each = forEach;
lodash.eachRight = forEachRight;
lodash.extend = assign;
lodash.methods = functions;
lodash.object = zipObject;
lodash.select = filter;
lodash.tail = rest;
lodash.unique = uniq;
lodash.unzip = zip;
// add functions to `lodash.prototype`
mixin(lodash);
/*--------------------------------------------------------------------------*/
// add functions that return unwrapped values when chaining
lodash.clone = clone;
lodash.cloneDeep = cloneDeep;
lodash.contains = contains;
lodash.escape = escape;
lodash.every = every;
lodash.find = find;
lodash.findIndex = findIndex;
lodash.findKey = findKey;
lodash.findLast = findLast;
lodash.findLastIndex = findLastIndex;
lodash.findLastKey = findLastKey;
lodash.has = has;
lodash.identity = identity;
lodash.indexOf = indexOf;
lodash.isArguments = isArguments;
lodash.isArray = isArray;
lodash.isBoolean = isBoolean;
lodash.isDate = isDate;
lodash.isElement = isElement;
lodash.isEmpty = isEmpty;
lodash.isEqual = isEqual;
lodash.isFinite = isFinite;
lodash.isFunction = isFunction;
lodash.isNaN = isNaN;
lodash.isNull = isNull;
lodash.isNumber = isNumber;
lodash.isObject = isObject;
lodash.isPlainObject = isPlainObject;
lodash.isRegExp = isRegExp;
lodash.isString = isString;
lodash.isUndefined = isUndefined;
lodash.lastIndexOf = lastIndexOf;
lodash.mixin = mixin;
lodash.noConflict = noConflict;
lodash.parseInt = parseInt;
lodash.random = random;
lodash.reduce = reduce;
lodash.reduceRight = reduceRight;
lodash.result = result;
lodash.runInContext = runInContext;
lodash.size = size;
lodash.some = some;
lodash.sortedIndex = sortedIndex;
lodash.template = template;
lodash.unescape = unescape;
lodash.uniqueId = uniqueId;
// add aliases
lodash.all = every;
lodash.any = some;
lodash.detect = find;
lodash.findWhere = find;
lodash.foldl = reduce;
lodash.foldr = reduceRight;
lodash.include = contains;
lodash.inject = reduce;
forOwn(lodash, function(func, methodName) {
if (!lodash.prototype[methodName]) {
lodash.prototype[methodName] = function() {
var args = [this.__wrapped__],
chainAll = this.__chain__;
push.apply(args, arguments);
var result = func.apply(lodash, args);
return chainAll
? new lodashWrapper(result, chainAll)
: result;
};
}
});
/*--------------------------------------------------------------------------*/
// add functions capable of returning wrapped and unwrapped values when chaining
lodash.first = first;
lodash.last = last;
lodash.sample = sample;
// add aliases
lodash.take = first;
lodash.head = first;
forOwn(lodash, function(func, methodName) {
var callbackable = methodName !== 'sample';
if (!lodash.prototype[methodName]) {
lodash.prototype[methodName]= function(n, guard) {
var chainAll = this.__chain__,
result = func(this.__wrapped__, n, guard);
return !chainAll && (n == null || (guard && !(callbackable && typeof n == 'function')))
? result
: new lodashWrapper(result, chainAll);
};
}
});
/*--------------------------------------------------------------------------*/
/**
* The semantic version number.
*
* @static
* @memberOf _
* @type string
*/
lodash.VERSION = '2.1.0';
// add "Chaining" functions to the wrapper
lodash.prototype.chain = wrapperChain;
lodash.prototype.toString = wrapperToString;
lodash.prototype.value = wrapperValueOf;
lodash.prototype.valueOf = wrapperValueOf;
// add `Array` functions that return unwrapped values
baseEach(['join', 'pop', 'shift'], function(methodName) {
var func = arrayRef[methodName];
lodash.prototype[methodName] = function() {
var chainAll = this.__chain__,
result = func.apply(this.__wrapped__, arguments);
return chainAll
? new lodashWrapper(result, chainAll)
: result;
};
});
// add `Array` functions that return the wrapped value
baseEach(['push', 'reverse', 'sort', 'unshift'], function(methodName) {
var func = arrayRef[methodName];
lodash.prototype[methodName] = function() {
func.apply(this.__wrapped__, arguments);
return this;
};
});
// add `Array` functions that return new wrapped values
baseEach(['concat', 'slice', 'splice'], function(methodName) {
var func = arrayRef[methodName];
lodash.prototype[methodName] = function() {
return new lodashWrapper(func.apply(this.__wrapped__, arguments), this.__chain__);
};
});
// avoid array-like object bugs with `Array#shift` and `Array#splice`
// in Firefox < 10 and IE < 9
if (!support.spliceObjects) {
baseEach(['pop', 'shift', 'splice'], function(methodName) {
var func = arrayRef[methodName],
isSplice = methodName == 'splice';
lodash.prototype[methodName] = function() {
var chainAll = this.__chain__,
value = this.__wrapped__,
result = func.apply(value, arguments);
if (value.length === 0) {
delete value[0];
}
return (chainAll || isSplice)
? new lodashWrapper(result, chainAll)
: result;
};
});
}
return lodash;
}
/*--------------------------------------------------------------------------*/
// expose Lo-Dash
var _ = runInContext();
// some AMD build optimizers, like r.js, check for condition patterns like the following:
if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) {
// Expose Lo-Dash to the global object even when an AMD loader is present in
// case Lo-Dash was injected by a third-party script and not intended to be
// loaded as a module. The global assignment can be reverted in the Lo-Dash
// module by its `noConflict()` method.
root._ = _;
// define as an anonymous module so, through path mapping, it can be
// referenced as the "underscore" module
define(function() {
return _;
});
}
// check for `exports` after `define` in case a build optimizer adds an `exports` object
else if (freeExports && freeModule) {
// in Node.js or RingoJS
if (moduleExports) {
(freeModule.exports = _)._ = _;
}
// in Narwhal or Rhino -require
else {
freeExports._ = _;
}
}
else {
// in a browser or Rhino
root._ = _;
}
}.call(this));
});
require.register("goAngular/index.js", function(exports, require, module){
/* jshint browser:true */
/* global require, angular */
/* exported goinstant */
/**
* @fileOverview
*
* Responsible for creating the goinstant AngularJS module and registering
* the platform provider and goAngular scope synchronization service.
*
* @example
* var app = angular.module('app', ['goinstant']);
*
* app.config(function(platformProvider) {
* platformProvider.set('https://goinstant.goinstant.net/YOURAPP/YOURROOM');
* });
*
* app.controller('ctrlName',
* ['$scope', 'goAngular', function($scope, goAngular) {
*
* var goAngular = new goAngular($scope,'uniqueNamespace');
*
* goAngular.initialize();
* }]);
*/
'use strict';
var platformProvider = require('./lib/goinstant_provider');
var goAngularFactory = require('./lib/go_angular_factory');
/** Create AngularJS goinstant module */
var goinstant = angular.module('goinstant', []);
/** Register Platform Service */
goinstant.provider('platform', platformProvider);
/** Register GoAngular Service */
goinstant.factory('GoAngular', ['$q', '$parse', 'platform', goAngularFactory]);
});
require.register("goAngular/lib/safe_apply.js", function(exports, require, module){
/* jshint browser:true */
/* global module */
/* exported safeApply */
/**
* @fileOverview
*
* This file contains the safeApply helper, it prevents a call to apply if
* a digest is already in progress
*/
'use strict';
/**
* safeApply
* @param {Object} $scope - Angular scope
* @param {requestCallback} fn - function passed to apply
* @callback
*/
var safeApply = module.exports = function($scope, fn) {
var phase = $scope.$root && $scope.$root.$$phase;
if (phase === '$apply' || phase === '$digest') {
return $scope.$eval(fn);
}
if (!fn) {
return $scope.$apply();
}
$scope.$apply(fn);
};
});
require.register("goAngular/lib/goinstant_provider.js", function(exports, require, module){
/* jshint browser:true */
/* global require, module, goinstant */
/* exported platformProvider */
/**
* @fileOverview
*
* This file contains the platformProvider service, which manages configuring
* and connecting to Platform.
*/
'use strict';
var _ = require('lodash');
var errors = require('./errors');
var safeApply = require('./safe_apply');
/** @constant {Array} Whitelisted options */
var OPTIONS_WL = ['rooms', 'token', 'guestId', 'sessionId'];
/**
* platformProvider Service
* @returns {Object}
*/
var platformProvider = module.exports = function() {
var goOpts;
return {
/**
* Called during AngularJS configuration stage to set Platform options
* @public
* @param{String} url - Platform connection Url
* @param {Object} opts
* @config {String|Array} rooms - Rooms which will be joined
* @config {String} [token] - Platform user JWT
* @example
* angularApp.config(function(platformProvider) {
* platformProvider.set('https://goinstant.net/YOURACCOUNT/YOURAPP');
* });
*/
set: function(url, opts) {
opts = opts || {};
if (!_.isString(url)) {
throw errors.create('platformProvider', 'INVALID_URL');
}
if (!_.isPlainObject(opts)) {
throw errors.create('platformProvider', 'INVALID_OPTIONS');
}
if (optsInvalid(opts, OPTIONS_WL)) {
throw errors.create('platformProvider', 'INVALID_ARGUMENT');
}
if (opts.rooms && !_.isArray(opts.rooms) && !_.isString(opts.rooms)) {
throw errors.create('platformProvider', 'INVALID_ROOM');
}
if (opts.token && !_.isString(opts.token)) {
throw errors.create('platformProvider', 'INVALID_TOKEN');
}
if (_.isString(opts.rooms)) {
opts.rooms = [opts.rooms];
}
goOpts = { url: url, opts: opts };
},
/**
* Opens a Platform connection and joins the rooms provided via
* @public
* the 'roomNames' option.
* @param {Object} $q - Angular promise library
* @param {Object} $scope - rootScope
* @returns {Object} deferred - passed Platform object on resolution
* @todo Refactor option handling
*/
$get: ['$q', '$rootScope', function($q, $rootScope) {
if (!window.goinstant) {
throw errors.create('platformProvider', 'MISSING_DEPENDENCY');
}
var deferred = $q.defer();
goinstant.connect(goOpts.url, goOpts.opts, function(err, platform) {
if (err) {
return deferred.reject(err);
}
var rooms = {};
_.each(_.toArray(arguments).slice(2), function(value) {
rooms[value.name] = value;
});
safeApply($rootScope, function() {
deferred.resolve({
platform: platform,
rooms: rooms
});
});
});
return deferred.promise;
}]
};
};
/* Helpers */
function optsInvalid(opts, valid_opts) {
return _.difference(_.keys(opts), valid_opts).length;
}
});
require.register("goAngular/lib/go_angular_factory.js", function(exports, require, module){
/* jshint browser: true */
/* global require, module */
/* exported goAngularFactory */
/**
* @fileOverview
*
* This file contains the goAngular factory provider, which validates options
* options being passed to the goAngular constructor before returning a new
* goAngular instance.
*/
'use strict';
var _ = require('lodash');
var errors = require('./errors');
var GoAngular = require('./go_angular');
/** @constant {Array} Whitelisted options */
var OPTIONS_WL = ['room', 'include', 'exclude'];
/**
* goAngularFactory
* @public
* @param {Object} $q - Angular promise library
* @param {Object} $parse - Angular parse
* @param {Object} platform - Connected platform object
* @returns {Function} option validation & instance creation
*/
var goAngularFactory = module.exports = function($q, $parse, platform) {
/**
* @public
* @param {Object} opts - see GoAngular documentation for further details
*/
return function(scope, namespace, opts) {
opts = opts || {};
if (!_.isPlainObject(opts)) {
throw errors.create('goAngularFactory', 'INVALID_OPTIONS');
}
if (optsInvalid(opts, OPTIONS_WL)) {
throw errors.create('goAngularFactory', 'INVALID_ARGUMENT');
}
if (!_.isObject(scope)) {
throw errors.create('goAngularFactory', 'INVALID_SCOPE');
}
if (!_.isString(namespace)) {
throw errors.create('goAngularFactory', 'INVALID_KEY');
}
if (opts.room && !_.isString(opts.room)) {
throw errors.create('goAngularFactory', 'INVALID_ROOM');
}
if (opts.include && !_.isArray(opts.include)) {
throw errors.create('goAngularFactory', 'INVALID_INCLUDE');
}
if (opts.exclude && !_.isArray(opts.exclude)) {
throw errors.create('goAngularFactory', 'INVALID_EXCLUDE');
}
return new GoAngular(scope, namespace, opts, $q, $parse, platform);
};
};
/* Helpers */
function optsInvalid(opts, valid_opts) {
return _.difference(_.keys(opts), valid_opts).length;
}
});
require.register("goAngular/lib/go_angular.js", function(exports, require, module){
/* jshint browser:true */
/* global require, module */
/**
* @fileOverview
*
* This file contains the GoAngular class which synchronizes controller
* specific $scope between clients.
*/
'use strict';
var _ = require('lodash');
var errors = require('./errors');
var async = require('async');
var emitter = require('emitter');
var ScopeScrubber = require('./scope_scrubber');
var ModelBinder = require('./model_binder');
var safeApply = require('./safe_apply');
/** @constant {String} GoInstant key namespace */
var GOINSTANT_KEY_NAMESPACE = 'goinstant/integrations/go-angular';
module.exports = GoAngular;
/**
* Instantiated by the goAngular factory, this creates a 2-way binding
* between strings, objects & arrays on the $scope object. It should be passed
* a unique keyName. If passed the include option, it will only sync the
* models specified.
* @public
* @constructor
* @class
* @param {Object} scope - Angular controller $scope
* @param {String} namespace - Platform key name unique to this controller
* @param {Object} opts
* @config {String} room - Platform room name
* @config {Array} [include] - An array of strings or regex
* @config {Array} [exclude] - An array of strings or regex
* @param {Object} $q - Angular promise library
* @param {Function} $parse - Angular parse
* @param {Object} platform - a promise which will resolve to a platform object
* @example
* var goAngular = new GoAngular({
* scope: $scope,
* roomName: 'roomSpecifiedInConfig',
* keyName: 'aUniqueKey'
* })
*/
function GoAngular(scope, namespace, opts, $q, $parse, platform) {
applyOptions(this, opts);
_.extend(this, {
_scope: scope,
_namespace: namespace,
_platform: platform,
_deferred: $q.defer(),
_parse: $parse,
_boundKeys: [] // Previously bound model keys
});
_.bindAll(this);
}
emitter(GoAngular.prototype); // extend Emitter
/**
* Responsible for initial scope <=> platform bindings
* @public
* @returns {Object} promise which will resolve to an instance of this class
* @todo Add additional component specific namespace
*/
var GOINSTANT_KEY_NAMESPACE = 'goinstant/integrations/go-angular';
GoAngular.prototype.initialize = function() {
var self = this;
// Resolves once platform connection is established
self._platform.then(function(result) {
var room = result.rooms[(self._room || 'lobby')];
if (!room) {
return self._deferred.reject('Invalid Room: Missing from configuration');
}
// Create a namespaced GoInstant key, should be specific to this controller
self._key = room.key(GOINSTANT_KEY_NAMESPACE).key(self._namespace);
// Creates the data binding between scope and platform
self._modelBinder = new ModelBinder(self._scope, self._parse, self._key);
var scopeFilterOptions = {
_include: (self._include || []),
_exclude: (self._exclude || [])
};
// Ensure only valid models are synchronized
self._scopeScrubber = new ScopeScrubber(scopeFilterOptions);
self._boundKeys = self._scopeScrubber.clean(self._scope); // return keys
// For each valid key in scope, create a binding
async.each(
self._boundKeys,
self._modelBinder.newBinding,
function(err) {
if (err) {
return safeApply(self._scope, function() {
self._deferred.reject(err);
});
}
// Monitor scope for changes
self._monitorScope();
// Resolve the promise
safeApply(self._scope, function() {
self._deferred.resolve(self);
});
}
);
}, self._deferred.reject);
return this._deferred.promise;
};
/**
* Watches the scope for changes
* @private
*/
GoAngular.prototype._monitorScope = function() {
this._scope.$watch(this._handleScopeChanges);
};
/**
* Creates remote/local bindings for new [valid] models
* @private
* @todo handle errors when no listeners are available
* Debounced due to the frequency with which $watch is fired
*/
GoAngular.prototype._handleScopeChanges = _.debounce(function() {
var self = this;
var currentScope = this._scopeScrubber.clean(self._scope);
var newModels = _.difference(currentScope, this._boundKeys);
if (newModels.length <= 0) {
return;
}
async.each(
newModels,
this._modelBinder.newBinding,
function(err) {
if (err) {
return self.emit('error', err);
}
self._boundKeys = _.union(self._boundKeys, newModels);
}
);
}, 500);
/**
* Clean up bindings and listeners
* @public
* @param {requestCallback} cb - The callback that handles the response.
* @param {err} returns null if no error is encountered
* @todo handle errors when no listeners are available
*/
GoAngular.prototype.destroy = function destroy(cb) {
if (!_.isFunction(cb)) {
throw errors.create('GoAngular', 'INVALID_CALLBACK');
}
this._modelBinder.cleanup(cb);
};
/**
* Helpers
* @todo Abstract to a helper lib
*/
function applyOptions(context, opts) {
_.each(opts, function(value, key) {
context['_' + key] = value;
});
}
});
require.register("goAngular/lib/scope_scrubber.js", function(exports, require, module){
/* jshint browser: true */
/* global require, module */
/**
* @fileOverview
*
* This file contains the ScopeScrubber class, which is responsible for removing
* anything from scope that either (a) cannot be stored in platform, or (b)
* the user specifies shouldn't be stored in platform.
*/
'use strict';
var _ = require('lodash');
/** @constant {Array} Blacklisted keys */
var KEY_BL = ['this'];
module.exports = ScopeScrubber;
/**
* ScopeScrubber, which accepts two (optional) options: _include & _exclude.
* While _include is present, only the models specified will be sync'd.
* Whitelisted (_exclude) options, should be used with caution.
* @private
* @param {Object} [opts]
* @config {Array} [_include] - Model keys, to be sync'd
* @config {Array} [_exclude] - Model keys, to be excluded from sync
*/
function ScopeScrubber(opts) {
_.bindAll(this);
opts = opts || {};
// Seperate strings & RegExp for included keys
this._include = _.reject(opts._include, _.isRegExp);
this._includeRegExp = _.select(opts._include, _.isRegExp);
// Seperate strings & RegExp for excluded keys
this._exclude = _.reject(opts._exclude, _.isRegExp);
this._excludeRegExp = _.select(opts._exclude, _.isRegExp);
this.cleanKeys = [];
}
/**
* Applies a filter to each model in scope
* @private
* @param {Object} $scope - rootScope
* @returns {Array} cleanKeys - The keys associated with sync-eligible models
*/
ScopeScrubber.prototype.clean = function($scope) {
// Run keys through the filter, reject false values, and merge with clean keys
var keysFiltered = _.filter(_.map($scope, this._filter));
this.cleanKeys = _.union(this.cleanKeys, keysFiltered);
return _.clone(this.cleanKeys);
};
/**
* Pushes valid keys into the cleanKeys array
* @private
* @param {*} value - The value of the model in $scope
* @param {String} key - The key of the model in $scope
* @todo Return true for valid keys
*/
ScopeScrubber.prototype._filter = function(value, key) {
if (_.contains(this.cleanKeys, key)) {
return false;
}
if (_.contains(KEY_BL, key)) {
return false;
}
if (key.charAt(0) === '$') {
return false;
}
var validValue = _.any([
_.isPlainObject,
_.isString,
_.isBoolean,
_.isArray,
_.isNumber,
_.isString
], function(validationFn) {
return validationFn(value);
});
if (!validValue) {
return false;
}
if (_.methods(value).length) {
return false;
}
if (_.isPlainObject(value)) {
var nestedMethods = _.any(_.values(value), _.methods);
if (nestedMethods) {
return false;
}
}
if (!this._included(key)) {
return false;
}
if (this._excluded(key)) {
return false;
}
return key;
};
/**
* Returns true if (a) the include option was not specified, (b) the key is
* in the include option array, or (c) the key is matched by regex in the
* include option array.
* @private
* @param {String} key - The key of the model in $scope
*/
ScopeScrubber.prototype._included = function(key) {
if (_.isEmpty(this._include) && _.isEmpty(this._includeRegExp)) {
return true;
}
var included = _.contains(this._include, key);
if (included) {
return true;
}
return _.any(this._includeRegExp, _.bind(String.prototype.match, key));
};
/**
* Returns true if (a) the key is in the exclude option array, or (b) the key
* is matched by regex in the exclude option array.
* Returns false if the exclude option is not defined.
* @private
* @param {String} key - The key of the model in $scope
*/
ScopeScrubber.prototype._excluded = function(key) {
if (_.isEmpty(this._exclude) && _.isEmpty(this._excludeRegExp)) {
return false;
}
var excluded = _.contains(this._exclude, key);
if (excluded) {
return true;
}
return _.any(this._excludeRegExp, _.bind(String.prototype.match, key));
};
});
require.register("goAngular/lib/model_binder.js", function(exports, require, module){
/* jshint browser: true */
/* global require, module */
/* exported ModelBinder */
/**
* @fileOverview
*
* This file contains the ModelBinder class, which is responsible for
* associating a model in scope (so anything $scope[here]) with a platform key.
*/
'use strict';
var _ = require('lodash');
var async = require('async');
var bounceProtection = require('./bounce_protection');
var safeApply = require('./safe_apply');
module.exports = ModelBinder;
/**
* ModelBinder instantiated with a controllers scope and unique key
* @private
* @constructor
* @param {Object} $scope - Angular controller scope
* @param {Object} $parse - Angular parse object
* @param {Object} key - Key unique to the controller scope
* @returns {Object} modelBinder
*/
function ModelBinder($scope, $parse, key) {
this._scope = $scope;
this._parse = $parse;
this._key = key;
this._bindings = [];
this._stopWatchs = [];
_.bindAll(this, ['_generateModel', 'newBinding', '_keySetHandler']);
}
/**
* Creates an association between a model in $scope and a key in platform by
* fetching an existing value, monitoring the local scope, and listening for
* changes on this value in platform.
* @private
* @param {String} modelName - Name of the model in scope and the platform key
* @param {requestCallback} [cb]- The callback that handles the response.
*/
ModelBinder.prototype.newBinding = function(modelName, cb) {
var self = this;
var model = self._generateModel(modelName);
var boundFuncs = _.map([
'_firstFetch',
'_localMonitor',
'_remoteMonitor'
], function(funcName) {
return _.bind(self[funcName], self, model);
}
);
async.parallel(boundFuncs, cb);
};
/**
* Generates a model with get/set functions powered by $parse
* @private
* @param {String} modelName - Name of the model in scope and the platform key
*/
ModelBinder.prototype._generateModel = function(modelName) {
var model = {};
model.name = modelName;
model.parsed = this._parse(modelName);
model.get = _.bind(model.parsed, model, this._scope);
model.set = _.curry(model.parsed.assign)(this._scope);
return model;
};
/**
* Attempts to retrieve a value from platform, if none exists it uses the
* existing value as a default.
* @private
* @param {String} modelName - Name of the model in scope and the platform key
* @param {requestCallback} next- The callback that handles the response.
*/
ModelBinder.prototype._firstFetch = function(model, next) {
var self = this;
var key = this._key.key(model.name);
var modelDefault = model.get();
// fetch the initial value of the model
key.get(function(err, value) {
if (err) {
return next(err);
}
var hasDefault = (!_.isUndefined(modelDefault) && !_.isNull(modelDefault));
var hasValue = (!_.isUndefined(value) && !_.isNull(value));
if (!hasDefault && !hasValue) {
return next();
}
if (hasDefault && !hasValue) {
return key.set(modelDefault, next);
}
safeApply(self._scope, function() {
model.set(value);
next();
});
});
};
/**
* Adds a listener to the $watch table
* @private
* @param {String} modelName - Name of the model in scope and the platform key
* @param {requestCallback} next - The callback that handles the response.
* @todo It might be easier to test change validation in isolation
*/
ModelBinder.prototype._localMonitor = function(model, next) {
var self = this;
var key = self._key.key(model.name);
// stopWatch represents a function that when invoked removes our listener
var stopWatch = self._scope.$watch(model.name, function(newVal, oldVal) {
if (!_.isUndefined(newVal) && newVal !== oldVal) {
return bounceProtection.local(function() {
key.set(newVal);
});
}
key.remove(function(err) {
self._scope.$emit('goangular:error', err);
});
}, true);
self._stopWatchs.push(stopWatch);
next();
};
/**
* Monitor platform key changes
* @private
* @param {String} modelName - Name of the model in scope and the platform key
* @param {requestCallback} next - The callback that handles the response.
* @todo Initial monitoring should only be called once, additional calls
* should add the modelName to an array of modelNames to validate against
*/
ModelBinder.prototype._remoteMonitor = function(model, next) {
if (this._monitoringRemote) {
return next();
}
var self = this;
self._monitoringRemote = true;
self._key.on('set', {
bubble: true,
listener: self._keySetHandler
}, next);
};
/**
* When the value of the key has changed, we update the associated $scope[model]
* @private
* @param {*} value - New key value
* @param {Object} context - Information related to the key being set
*/
ModelBinder.prototype._keySetHandler = function(value, context) {
var self = this;
bounceProtection.remote(function() {
var modelName = self._keyToModel(context.key);
var model = self._generateModel(modelName);
safeApply(self._scope, function() {
model.set(value);
});
});
};
/**
* Returns the model name when passed a key so:
* key: '/uniqueControllerKey/modelName', becomes: 'modelName'
* @private
* @param {String} key - platform key
* @returns {String} modelName
*/
ModelBinder.prototype._keyToModel = function(key) {
return _.last(key.split('/'));
};
/**
* Removes the set listener from the key and invokes every stopwatch
* @private
* @param {String} key - platform key
* @param {requestCallback} next - The callback that handles the response.
*/
ModelBinder.prototype.cleanup = function(cb) {
var self = this;
self._key.off('set', self._keySetHandler, function(err) {
if (err) {
return cb(err);
}
_.invoke(self._stopWatchs, Function.prototype.call);
cb();
});
};
});
require.register("goAngular/lib/bounce_protection.js", function(exports, require, module){
/* jshint browser: true */
/* global exports */
/* exported bounceProtection */
/**
* @fileOverview
*
* This file contains a helper designed to prevent infinite bounce backs a la:
* $watch fires -> key.set -> key.on -> $scope set -> $watch fires ...
*/
'use strict';
var bounceProtection = exports;
exports.constructor = function bounceProtection() {};
bounceProtection.remoteUpdate = false; // remote toggle
/**
* Invoke cb while a remote update is not currently being executed
* @private
* @param {requestCallback} cb - The callback that handles the response.
* @example
* bounceProtection.local(function() {
* key.set(newValue);
* });
*/
bounceProtection.local = function(cb) {
if (this.remoteUpdate) {
return;
}
cb();
};
/**
* Invoke a cb while remoteUpdate is enabled to prevent a local function
* from being triggered
* @private
* @param {requestCallback} cb - The callback that handles the response.
* @example
* bounceProtection.remote(function() {
* $scope.someModel = value;
* });
*/
bounceProtection.remote = function(cb) {
this.remoteUpdate = true;
cb();
this.remoteUpdate = false;
};
});
require.register("goAngular/lib/errors.js", function(exports, require, module){
/* jshint browser: true */
/* global module */
'use strict';
/* Expose `errors` */
var errors = module.exports = function errors() {};
var errorMap = {
INVALID_CALLBACK: ': Callback was not found or invalid',
INVALID_OPTIONS: ': Options was not found or invalid',
INVALID_ARGUMENT: ': Invalid argument passed',
INVALID_ROOM: ': Room was not found or invalid',
INVALID_SCOPE: ': Scope was not found or invalid',
INVALID_NAMESPACE: ': Namespace was not found or invalid',
INVALID_URL: ': Connect url was not found or invalid',
INVALID_TOKEN: ': Token is not a valid string',
INVALID_KEY: ': Key was not found or invalid',
INVALID_INCLUDE: ': Include is not a valid array',
INVALID_EXCLUDE: ': Include is not a valid array',
MISSING_DEPENDENCY: ': goinstant must be loaded'
};
errors.errorMap = errorMap;
errors.create = function(method, type) {
if (!method || !type || !errorMap[type]) {
throw new Error('That error type doesn\'t exist!');
}
return new Error(method + '' + errorMap[type]);
};
});
require.alias("component-emitter/index.js", "goAngular/deps/emitter/index.js");
require.alias("component-emitter/index.js", "emitter/index.js");
require.alias("component-indexof/index.js", "component-emitter/deps/indexof/index.js");
require.alias("caolan-async/lib/async.js", "goAngular/deps/async/lib/async.js");
require.alias("caolan-async/lib/async.js", "goAngular/deps/async/index.js");
require.alias("caolan-async/lib/async.js", "async/index.js");
require.alias("caolan-async/lib/async.js", "caolan-async/index.js");
require.alias("lodash-lodash/index.js", "goAngular/deps/lodash/index.js");
require.alias("lodash-lodash/dist/lodash.compat.js", "goAngular/deps/lodash/dist/lodash.compat.js");
require.alias("lodash-lodash/index.js", "lodash/index.js");
require.alias("goAngular/index.js", "goAngular/index.js");if (typeof exports == "object") {
module.exports = require("goAngular");
} else if (typeof define == "function" && define.amd) {
define(function(){ return require("goAngular"); });
} else {
this[""];this.goinstant = this.goinstant || {};this.goinstant.widgets = this.goinstant.widgets || {};this.goinstant.widgets["GoAngular"] = require("goAngular");
}})();