From 93dcbd16b5aa527b63e2b8c9de3b45b977884cc3 Mon Sep 17 00:00:00 2001 From: Endel Dreyer Date: Sun, 14 Dec 2014 22:41:14 -0200 Subject: [PATCH 1/4] refactoring on build using browserify / es6. grunt is now only for testing. --- .travis.yml | 3 +- Gruntfile.js | 41 +- README.md | 1 - bower.json | 3 - build/hook.js | 2881 +++++ build/hook.min.js | 2 + dist/hook.js | 11726 --------------------- dist/hook.min.js | 3 - grunt/concat.yaml | 28 - grunt/connect.yaml | 4 - grunt/jshint.yaml | 2 - grunt/qunit.yaml | 4 - grunt/saucelabs-qunit.yaml | 28 - grunt/tasks/default.yaml | 3 - grunt/tasks/test.yaml | 2 - grunt/tasks/travis.yaml | 2 - grunt/uglify.yaml | 5 - grunt/watch.yaml | 5 - grunt/yuidoc.yaml | 10 - package.json | 69 +- src/auth.js | 430 +- src/channel.js | 223 +- src/channel/sse.js | 215 - src/channel/websockets.js | 336 +- src/client.js | 380 + src/collection.js | 1446 +-- src/collection_item.js | 9 - src/core/api.js | 11 - src/core/client.js | 361 - src/core/events.js | 21 - src/core/iterable.js | 84 - src/core/legacy.js | 9 - src/core/plugin_manager.js | 30 - src/hook.js | 30 + src/key_values.js | 90 +- src/model.js | 2 - src/pagination.js | 131 +- src/plugin_manager.js | 34 + src/plugins/ab.js | 4 +- src/plugins/cordova/cordova.js | 235 +- src/plugins/cordova/push_notification.js | 224 - src/plugins/oauth.js | 10 +- src/query.js | 0 src/system.js | 46 +- src/utils/events.js | 27 + src/vendor/json.date-extensions.js | 135 + src/wrap/begin.js | 18 - src/wrap/end.js | 1 - tests/targets.json | 12 + 49 files changed, 5274 insertions(+), 14102 deletions(-) create mode 100644 build/hook.js create mode 100644 build/hook.min.js delete mode 100644 dist/hook.js delete mode 100644 dist/hook.min.js delete mode 100644 grunt/concat.yaml delete mode 100644 grunt/connect.yaml delete mode 100644 grunt/jshint.yaml delete mode 100644 grunt/qunit.yaml delete mode 100644 grunt/saucelabs-qunit.yaml delete mode 100644 grunt/tasks/default.yaml delete mode 100644 grunt/tasks/test.yaml delete mode 100644 grunt/tasks/travis.yaml delete mode 100644 grunt/uglify.yaml delete mode 100644 grunt/watch.yaml delete mode 100644 grunt/yuidoc.yaml delete mode 100644 src/channel/sse.js create mode 100644 src/client.js delete mode 100644 src/collection_item.js delete mode 100644 src/core/api.js delete mode 100644 src/core/client.js delete mode 100644 src/core/events.js delete mode 100644 src/core/iterable.js delete mode 100644 src/core/legacy.js delete mode 100644 src/core/plugin_manager.js create mode 100644 src/hook.js delete mode 100644 src/model.js create mode 100644 src/plugin_manager.js delete mode 100644 src/plugins/cordova/push_notification.js delete mode 100644 src/query.js create mode 100644 src/utils/events.js create mode 100644 src/vendor/json.date-extensions.js delete mode 100644 src/wrap/begin.js delete mode 100644 src/wrap/end.js create mode 100644 tests/targets.json diff --git a/.travis.yml b/.travis.yml index 8628f7b..56e354d 100644 --- a/.travis.yml +++ b/.travis.yml @@ -16,9 +16,8 @@ before_script: # install javascript dependencies and compile dist files - npm install -g grunt-cli - npm install -g bower - - bower install - npm install - - grunt + - grunt test script: - grunt travis diff --git a/Gruntfile.js b/Gruntfile.js index 1415678..5e30f5b 100644 --- a/Gruntfile.js +++ b/Gruntfile.js @@ -1,4 +1,37 @@ -module.exports = function(grunt) { - grunt.loadNpmTasks('grunt-saucelabs'); - require('grunt-loader').load(grunt); -}; +module.exports = function (grunt) { + var browsers = JSON.parse(require('fs').readFileSync('tests/targets.json')); + console.log(browsers); + + grunt.initConfig({ + connect: { + server: { + options: { + base: "", + port: 9999 + } + } + }, + + 'saucelabs-qunit': { + all: { + options: { + urls: ["http://127.0.0.1:9999/tests/index.html"], + tunnelTimeout: 5, + build: process.env.TRAVIS_JOB_ID, + concurrency: 3, + browsers: browsers, + testname: "hook qunit tests", + tags: ["master"] + } + } + }, + watch: {} + }); + + // Loading dependencies + for (var key in grunt.file.readJSON("package.json").devDependencies) { + if (key !== "grunt" && key.indexOf("grunt") === 0) grunt.loadNpmTasks(key); + } + + grunt.registerTask("test", ["connect", "saucelabs-qunit"]); +} diff --git a/README.md b/README.md index c0e3f4b..35cfae6 100644 --- a/README.md +++ b/README.md @@ -5,7 +5,6 @@ hook-javascript client ![Build status](https://travis-ci.org/doubleleft/hook-jav JavaScript client for [hook](https://github.com/doubleleft/hook). - - [Documentation](http://doubleleft.github.io/hook-javascript/classes/Hook.Client.html). - [Plugins](https://github.com/doubleleft/hook-javascript/wiki/Plugins). diff --git a/bower.json b/bower.json index ae2fda4..ca6bb57 100644 --- a/bower.json +++ b/bower.json @@ -16,10 +16,7 @@ ], "dependencies" : { "json.date": "RickStrahl/json.date-extensions#f16379c45f0150047c547ab821e94aad00b2c2a9", - "uxhr": "endel/uxhr#a484e430e224375b786072da5abb94dfd3c68685", "qunit": "~1.9.0", - "when": "~2.8.0", - "lodash": "~2.4.0", "blueimp-canvas-to-blob": "~2.1.0", "eventsource": "Yaffle/EventSource", diff --git a/build/hook.js b/build/hook.js new file mode 100644 index 0000000..03854cd --- /dev/null +++ b/build/hook.js @@ -0,0 +1,2881 @@ +!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var o;"undefined"!=typeof window?o=window:"undefined"!=typeof global?o=global:"undefined"!=typeof self&&(o=self),o.Hook=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o 0) { + var fn = queue.shift(); + fn(); + } + } + }, true); + + return function nextTick(fn) { + queue.push(fn); + window.postMessage('process-tick', '*'); + }; + } + + return function nextTick(fn) { + setTimeout(fn, 0); + }; +})(); + +process.title = 'browser'; +process.browser = true; +process.env = {}; +process.argv = []; + +function noop() {} + +process.on = noop; +process.addListener = noop; +process.once = noop; +process.off = noop; +process.removeListener = noop; +process.removeAllListeners = noop; +process.emit = noop; + +process.binding = function (name) { + throw new Error('process.binding is not supported'); +}; + +// TODO(shtylman) +process.cwd = function () { return '/' }; +process.chdir = function (dir) { + throw new Error('process.chdir is not supported'); +}; + +},{}],2:[function(require,module,exports){ +/** @license + * eventsource.js + * Available under MIT License (MIT) + * https://github.com/Yaffle/EventSource/ + */ + +/*jslint indent: 2, vars: true, plusplus: true */ +/*global setTimeout, clearTimeout */ + +(function (global) { + "use strict"; + + function Map() { + this.data = {}; + } + + Map.prototype = { + get: function (key) { + return this.data[key + "~"]; + }, + set: function (key, value) { + this.data[key + "~"] = value; + }, + "delete": function (key) { + delete this.data[key + "~"]; + } + }; + + function EventTarget() { + this.listeners = new Map(); + } + + function throwError(e) { + setTimeout(function () { + throw e; + }, 0); + } + + EventTarget.prototype = { + dispatchEvent: function (event) { + event.target = this; + var type = event.type.toString(); + var listeners = this.listeners; + var typeListeners = listeners.get(type); + if (typeListeners === undefined) { + return; + } + var length = typeListeners.length; + var i = -1; + var listener = undefined; + while (++i < length) { + listener = typeListeners[i]; + try { + listener.call(this, event); + } catch (e) { + throwError(e); + } + } + }, + addEventListener: function (type, callback) { + type = type.toString(); + var listeners = this.listeners; + var typeListeners = listeners.get(type); + if (typeListeners === undefined) { + typeListeners = []; + listeners.set(type, typeListeners); + } + var i = typeListeners.length; + while (--i >= 0) { + if (typeListeners[i] === callback) { + return; + } + } + typeListeners.push(callback); + }, + removeEventListener: function (type, callback) { + type = type.toString(); + var listeners = this.listeners; + var typeListeners = listeners.get(type); + if (typeListeners === undefined) { + return; + } + var length = typeListeners.length; + var filtered = []; + var i = -1; + while (++i < length) { + if (typeListeners[i] !== callback) { + filtered.push(typeListeners[i]); + } + } + if (filtered.length === 0) { + listeners["delete"](type); + } else { + listeners.set(type, filtered); + } + } + }; + + function Event(type) { + this.type = type; + this.target = undefined; + } + + function MessageEvent(type, options) { + Event.call(this, type); + this.data = options.data; + this.lastEventId = options.lastEventId; + } + + MessageEvent.prototype = Event.prototype; + + var XHR = global.XMLHttpRequest; + var XDR = global.XDomainRequest; + var isCORSSupported = XHR !== undefined && (new XHR()).withCredentials !== undefined; + var isXHR = isCORSSupported; + var Transport = isCORSSupported ? XHR : (XDR !== undefined ? XDR : undefined); + var WAITING = -1; + var CONNECTING = 0; + var OPEN = 1; + var CLOSED = 2; + var AFTER_CR = 3; + var FIELD_START = 4; + var FIELD = 5; + var VALUE_START = 6; + var VALUE = 7; + var contentTypeRegExp = /^text\/event\-stream;?(\s*charset\=utf\-8)?$/i; + + var MINIMUM_DURATION = 1000; + var MAXIMUM_DURATION = 18000000; + + function getDuration(value, def) { + var n = value; + if (n !== n) { + n = def; + } + return (n < MINIMUM_DURATION ? MINIMUM_DURATION : (n > MAXIMUM_DURATION ? MAXIMUM_DURATION : n)); + } + + function fire(that, f, event) { + try { + if (typeof f === "function") { + f.call(that, event); + } + } catch (e) { + throwError(e); + } + } + + function EventSource(url, options) { + url = url.toString(); + + var withCredentials = isCORSSupported && options !== undefined && Boolean(options.withCredentials); + var initialRetry = getDuration(1000, 0); + var heartbeatTimeout = getDuration(45000, 0); + + var lastEventId = ""; + var that = this; + var retry = initialRetry; + var wasActivity = false; + var xhr = new Transport(); + var timeout = 0; + var timeout0 = 0; + var charOffset = 0; + var currentState = WAITING; + var dataBuffer = []; + var lastEventIdBuffer = ""; + var eventTypeBuffer = ""; + var onTimeout = undefined; + + var state = FIELD_START; + var field = ""; + var value = ""; + + function close() { + currentState = CLOSED; + if (xhr !== undefined) { + xhr.abort(); + xhr = undefined; + } + if (timeout !== 0) { + clearTimeout(timeout); + timeout = 0; + } + if (timeout0 !== 0) { + clearTimeout(timeout0); + timeout0 = 0; + } + that.readyState = CLOSED; + } + + function onEvent(type) { + var responseText = currentState === OPEN || currentState === CONNECTING ? xhr.responseText : ""; + var event = undefined; + var isWrongStatusCodeOrContentType = false; + + if (currentState === CONNECTING) { + var status = 0; + var statusText = ""; + var contentType = undefined; + if (isXHR) { + try { + status = xhr.status; + statusText = xhr.statusText; + contentType = xhr.getResponseHeader("Content-Type"); + } catch (error) { + // https://bugs.webkit.org/show_bug.cgi?id=29121 + status = 0; + statusText = ""; + contentType = undefined; + // FF < 14, WebKit + // https://bugs.webkit.org/show_bug.cgi?id=29658 + // https://bugs.webkit.org/show_bug.cgi?id=77854 + } + } else if (type !== "" && type !== "error") { + status = 200; + statusText = "OK"; + contentType = xhr.contentType; + } + if (contentType === undefined || contentType === null) { + contentType = ""; + } + if (status === 0 && statusText === "" && type === "load" && responseText !== "") { + status = 200; + statusText = "OK"; + if (contentType === "") { // Opera 12 + var tmp = (/^data\:([^,]*?)(?:;base64)?,[\S]*$/).exec(url); + if (tmp !== undefined && tmp !== null) { + contentType = tmp[1]; + } + } + } + if (status === 200 && contentTypeRegExp.test(contentType)) { + currentState = OPEN; + wasActivity = true; + retry = initialRetry; + that.readyState = OPEN; + event = new Event("open"); + that.dispatchEvent(event); + fire(that, that.onopen, event); + if (currentState === CLOSED) { + return; + } + } else { + if (status !== 0) { + var message = ""; + if (status !== 200) { + message = "EventSource's response has a status " + status + " " + statusText.replace(/\s+/g, " ") + " that is not 200. Aborting the connection."; + } else { + message = "EventSource's response has a Content-Type specifying an unsupported type: " + contentType.replace(/\s+/g, " ") + ". Aborting the connection."; + } + setTimeout(function () { + throw new Error(message); + }, 0); + isWrongStatusCodeOrContentType = true; + } + } + } + + if (currentState === OPEN) { + if (responseText.length > charOffset) { + wasActivity = true; + } + var i = charOffset - 1; + var length = responseText.length; + var c = "\n"; + while (++i < length) { + c = responseText.charAt(i); + if (state === AFTER_CR && c === "\n") { + state = FIELD_START; + } else { + if (state === AFTER_CR) { + state = FIELD_START; + } + if (c === "\r" || c === "\n") { + if (field === "data") { + dataBuffer.push(value); + } else if (field === "id") { + lastEventIdBuffer = value; + } else if (field === "event") { + eventTypeBuffer = value; + } else if (field === "retry") { + initialRetry = getDuration(Number(value), initialRetry); + retry = initialRetry; + } else if (field === "heartbeatTimeout") { + heartbeatTimeout = getDuration(Number(value), heartbeatTimeout); + if (timeout !== 0) { + clearTimeout(timeout); + timeout = setTimeout(onTimeout, heartbeatTimeout); + } + } + value = ""; + field = ""; + if (state === FIELD_START) { + if (dataBuffer.length !== 0) { + lastEventId = lastEventIdBuffer; + if (eventTypeBuffer === "") { + eventTypeBuffer = "message"; + } + event = new MessageEvent(eventTypeBuffer, { + data: dataBuffer.join("\n"), + lastEventId: lastEventIdBuffer + }); + that.dispatchEvent(event); + if (eventTypeBuffer === "message") { + fire(that, that.onmessage, event); + } + if (currentState === CLOSED) { + return; + } + } + dataBuffer.length = 0; + eventTypeBuffer = ""; + } + state = c === "\r" ? AFTER_CR : FIELD_START; + } else { + if (state === FIELD_START) { + state = FIELD; + } + if (state === FIELD) { + if (c === ":") { + state = VALUE_START; + } else { + field += c; + } + } else if (state === VALUE_START) { + if (c !== " ") { + value += c; + } + state = VALUE; + } else if (state === VALUE) { + value += c; + } + } + } + } + charOffset = length; + } + + if ((currentState === OPEN || currentState === CONNECTING) && + (type === "load" || type === "error" || isWrongStatusCodeOrContentType || (charOffset > 1024 * 1024) || (timeout === 0 && !wasActivity))) { + if (isWrongStatusCodeOrContentType) { + close(); + } else { + currentState = WAITING; + xhr.abort(); + if (timeout !== 0) { + clearTimeout(timeout); + timeout = 0; + } + if (retry > initialRetry * 16) { + retry = initialRetry * 16; + } + if (retry > MAXIMUM_DURATION) { + retry = MAXIMUM_DURATION; + } + timeout = setTimeout(onTimeout, retry); + retry = retry * 2 + 1; + + that.readyState = CONNECTING; + } + event = new Event("error"); + that.dispatchEvent(event); + fire(that, that.onerror, event); + } else { + if (timeout === 0) { + wasActivity = false; + timeout = setTimeout(onTimeout, heartbeatTimeout); + } + } + } + + function onProgress() { + onEvent("progress"); + } + + function onLoad() { + onEvent("load"); + } + + function onError() { + onEvent("error"); + } + + if (isXHR) { + // workaround for Opera issue with "progress" events + timeout0 = setTimeout(function f() { + if (xhr.readyState === 3) { + onEvent("progress"); + } + timeout0 = setTimeout(f, 500); + }, 0); + } + + onTimeout = function () { + timeout = 0; + if (currentState !== WAITING) { + onEvent(""); + return; + } + // loading indicator in Safari, Chrome < 14, Firefox + // https://bugzilla.mozilla.org/show_bug.cgi?id=736723 + if (isXHR && (xhr.sendAsBinary !== undefined || xhr.onloadend === undefined) && global.document !== undefined && global.document.readyState !== undefined && global.document.readyState !== "complete") { + timeout = setTimeout(onTimeout, 4); + return; + } + // XDomainRequest#abort removes onprogress, onerror, onload + + xhr.onload = onLoad; + xhr.onerror = onError; + + if (isXHR) { + // improper fix to match Firefox behaviour, but it is better than just ignore abort + // see https://bugzilla.mozilla.org/show_bug.cgi?id=768596 + // https://bugzilla.mozilla.org/show_bug.cgi?id=880200 + // https://code.google.com/p/chromium/issues/detail?id=153570 + xhr.onabort = onError; + + // Firefox 3.5 - 3.6 - ? < 9.0 + // onprogress is not fired sometimes or delayed + xhr.onreadystatechange = onProgress; + } + + xhr.onprogress = onProgress; + + wasActivity = false; + timeout = setTimeout(onTimeout, heartbeatTimeout); + + charOffset = 0; + currentState = CONNECTING; + dataBuffer.length = 0; + eventTypeBuffer = ""; + lastEventIdBuffer = lastEventId; + value = ""; + field = ""; + state = FIELD_START; + + var s = url.slice(0, 5); + if (s !== "data:" && s !== "blob:") { + s = url + ((url.indexOf("?", 0) === -1 ? "?" : "&") + "lastEventId=" + encodeURIComponent(lastEventId) + "&r=" + (Math.random() + 1).toString().slice(2)); + } else { + s = url; + } + xhr.open("GET", s, true); + + if (isXHR) { + // withCredentials should be set after "open" for Safari and Chrome (< 19 ?) + xhr.withCredentials = withCredentials; + + xhr.responseType = "text"; + + // Request header field Cache-Control is not allowed by Access-Control-Allow-Headers. + // "Cache-control: no-cache" are not honored in Chrome and Firefox + // https://bugzilla.mozilla.org/show_bug.cgi?id=428916 + //xhr.setRequestHeader("Cache-Control", "no-cache"); + xhr.setRequestHeader("Accept", "text/event-stream"); + // Request header field Last-Event-ID is not allowed by Access-Control-Allow-Headers. + //xhr.setRequestHeader("Last-Event-ID", lastEventId); + } + + xhr.send(undefined); + }; + + EventTarget.call(this); + this.close = close; + this.url = url; + this.readyState = CONNECTING; + this.withCredentials = withCredentials; + + this.onopen = undefined; + this.onmessage = undefined; + this.onerror = undefined; + + onTimeout(); + } + + function F() { + this.CONNECTING = CONNECTING; + this.OPEN = OPEN; + this.CLOSED = CLOSED; + } + F.prototype = EventTarget.prototype; + + EventSource.prototype = new F(); + F.call(EventSource); + + var isEventSourceSupported = function () { + if (global.EventSource !== undefined) { + try { + var es = new global.EventSource("data:text/event-stream;charset=utf-8,"); + es.close(); + return es.withCredentials === false && + es.url !== ""; // to filter out Opera 12 implementation + } catch (error) { + throwError(error); + } + } + return false; + }; + + if (Transport !== undefined && !isEventSourceSupported()) { + // Why replace a native EventSource ? + // https://bugzilla.mozilla.org/show_bug.cgi?id=444328 + // https://bugzilla.mozilla.org/show_bug.cgi?id=831392 + // https://code.google.com/p/chromium/issues/detail?id=260144 + // https://code.google.com/p/chromium/issues/detail?id=225654 + // ... + global.NativeEventSource = global.EventSource; + global.EventSource = EventSource; + } + +}(this)); + +},{}],3:[function(require,module,exports){ +(function (root, factory) { + if (typeof exports === 'object') { + module.exports = factory(); + } else if (typeof define === 'function' && define.amd) { + define('uxhr', factory); + } else { + root.uxhr = factory(); + } +}(this, function () { + + "use strict"; + + return function (url, data, options) { + data = data || ''; + options = options || {}; + + var uri = document.createElement('a'); + uri.href = url; + + var complete = options.complete || function(){}, + success = options.success || function(){}, + error = options.error || function(){}, + timeout = options.timeout || 0, + ontimeout = options.ontimeout || function(){}, + onprogress = options.onprogress || function(){}, + headers = options.headers || {}, + method = options.method || 'GET', + sync = options.sync || false, + isCors = (uri.hostname != location.hostname), + req = (function() { + + if (typeof XMLHttpRequest !== 'undefined') { + + // CORS (IE8-9) + if (isCors && typeof XDomainRequest !== 'undefined') { + return new XDomainRequest(); + } + + // local, CORS (other browsers) + return new XMLHttpRequest(); + + } else if (typeof 'ActiveXObject' !== 'undefined') { + return new ActiveXObject('Microsoft.XMLHTTP'); + } + + })(); + + if (!req) { + throw new Error ('Browser doesn\'t support XHR'); + } + + // serialize data? + var hasFormData = (typeof(window.FormData) !== 'undefined'); + if (typeof data !== 'string' && (hasFormData && !(data instanceof window.FormData))) { + var serialized = []; + for (var datum in data) { + serialized.push(datum + '=' + data[datum]); + } + data = serialized.join('&'); + } + + // use ? or &, accourding to given url + if (method === 'GET' && data) { + url += (url.indexOf('?') >= 0) ? '&' + data : '?' + data; + } + + // open connection + req.open(method, url, !sync); + + // set timeout + // timeouts cannot be set for synchronous requests made from a document. + if (!sync) { + if ('ontimeout' in req) { + req.timeout = timeout; + req.ontimeout = ontimeout; + } + } + + // set onprogress + if ('onprogress' in req) { + req.onprogress = onprogress; + } + + // listen for XHR events + req.onload = function () { + complete(req.responseText, req.status); + success(req.responseText); + }; + req.onerror = function () { + complete(req.responseText); + error(req.responseText, req.status); + }; + + if (typeof(req.setRequestHeader)!=="undefined") { + // set headers + for (var header in headers) { + req.setRequestHeader(header, headers[header]); + } + } + + // send it + req.send(method !== 'GET' ? data : null); + return req; + }; + +})); + +},{}],4:[function(require,module,exports){ +(function (process){ +/** @license MIT License (c) copyright 2011-2013 original author or authors */ + +/** + * A lightweight CommonJS Promises/A and when() implementation + * when is part of the cujo.js family of libraries (http://cujojs.com/) + * + * Licensed under the MIT License at: + * http://www.opensource.org/licenses/mit-license.php + * + * @author Brian Cavalier + * @author John Hann + * @version 2.8.0 + */ +(function(define) { 'use strict'; +define(function (require) { + + // Public API + + when.promise = promise; // Create a pending promise + when.resolve = resolve; // Create a resolved promise + when.reject = reject; // Create a rejected promise + when.defer = defer; // Create a {promise, resolver} pair + + when.join = join; // Join 2 or more promises + + when.all = all; // Resolve a list of promises + when.map = map; // Array.map() for promises + when.reduce = reduce; // Array.reduce() for promises + when.settle = settle; // Settle a list of promises + + when.any = any; // One-winner race + when.some = some; // Multi-winner race + + when.isPromise = isPromiseLike; // DEPRECATED: use isPromiseLike + when.isPromiseLike = isPromiseLike; // Is something promise-like, aka thenable + + /** + * Register an observer for a promise or immediate value. + * + * @param {*} promiseOrValue + * @param {function?} [onFulfilled] callback to be called when promiseOrValue is + * successfully fulfilled. If promiseOrValue is an immediate value, callback + * will be invoked immediately. + * @param {function?} [onRejected] callback to be called when promiseOrValue is + * rejected. + * @param {function?} [onProgress] callback to be called when progress updates + * are issued for promiseOrValue. + * @returns {Promise} a new {@link Promise} that will complete with the return + * value of callback or errback or the completion value of promiseOrValue if + * callback and/or errback is not supplied. + */ + function when(promiseOrValue, onFulfilled, onRejected, onProgress) { + // Get a trusted promise for the input promiseOrValue, and then + // register promise handlers + return cast(promiseOrValue).then(onFulfilled, onRejected, onProgress); + } + + /** + * Creates a new promise whose fate is determined by resolver. + * @param {function} resolver function(resolve, reject, notify) + * @returns {Promise} promise whose fate is determine by resolver + */ + function promise(resolver) { + return new Promise(resolver, + monitorApi.PromiseStatus && monitorApi.PromiseStatus()); + } + + /** + * Trusted Promise constructor. A Promise created from this constructor is + * a trusted when.js promise. Any other duck-typed promise is considered + * untrusted. + * @constructor + * @returns {Promise} promise whose fate is determine by resolver + * @name Promise + */ + function Promise(resolver, status) { + var self, value, consumers = []; + + self = this; + this._status = status; + this.inspect = inspect; + this._when = _when; + + // Call the provider resolver to seal the promise's fate + try { + resolver(promiseResolve, promiseReject, promiseNotify); + } catch(e) { + promiseReject(e); + } + + /** + * Returns a snapshot of this promise's current status at the instant of call + * @returns {{state:String}} + */ + function inspect() { + return value ? value.inspect() : toPendingState(); + } + + /** + * Private message delivery. Queues and delivers messages to + * the promise's ultimate fulfillment value or rejection reason. + * @private + */ + function _when(resolve, notify, onFulfilled, onRejected, onProgress) { + consumers ? consumers.push(deliver) : enqueue(function() { deliver(value); }); + + function deliver(p) { + p._when(resolve, notify, onFulfilled, onRejected, onProgress); + } + } + + /** + * Transition from pre-resolution state to post-resolution state, notifying + * all listeners of the ultimate fulfillment or rejection + * @param {*} val resolution value + */ + function promiseResolve(val) { + if(!consumers) { + return; + } + + var queue = consumers; + consumers = undef; + + value = coerce(self, val); + enqueue(function () { + if(status) { + updateStatus(value, status); + } + runHandlers(queue, value); + }); + } + + /** + * Reject this promise with the supplied reason, which will be used verbatim. + * @param {*} reason reason for the rejection + */ + function promiseReject(reason) { + promiseResolve(new RejectedPromise(reason)); + } + + /** + * Issue a progress event, notifying all progress listeners + * @param {*} update progress event payload to pass to all listeners + */ + function promiseNotify(update) { + if(consumers) { + var queue = consumers; + enqueue(function () { + runHandlers(queue, new ProgressingPromise(update)); + }); + } + } + } + + promisePrototype = Promise.prototype; + + /** + * Register handlers for this promise. + * @param [onFulfilled] {Function} fulfillment handler + * @param [onRejected] {Function} rejection handler + * @param [onProgress] {Function} progress handler + * @return {Promise} new Promise + */ + promisePrototype.then = function(onFulfilled, onRejected, onProgress) { + var self = this; + + return new Promise(function(resolve, reject, notify) { + self._when(resolve, notify, onFulfilled, onRejected, onProgress); + }, this._status && this._status.observed()); + }; + + /** + * Register a rejection handler. Shortcut for .then(undefined, onRejected) + * @param {function?} onRejected + * @return {Promise} + */ + promisePrototype['catch'] = promisePrototype.otherwise = function(onRejected) { + return this.then(undef, onRejected); + }; + + /** + * Ensures that onFulfilledOrRejected will be called regardless of whether + * this promise is fulfilled or rejected. onFulfilledOrRejected WILL NOT + * receive the promises' value or reason. Any returned value will be disregarded. + * onFulfilledOrRejected may throw or return a rejected promise to signal + * an additional error. + * @param {function} onFulfilledOrRejected handler to be called regardless of + * fulfillment or rejection + * @returns {Promise} + */ + promisePrototype['finally'] = promisePrototype.ensure = function(onFulfilledOrRejected) { + return typeof onFulfilledOrRejected === 'function' + ? this.then(injectHandler, injectHandler)['yield'](this) + : this; + + function injectHandler() { + return resolve(onFulfilledOrRejected()); + } + }; + + /** + * Terminate a promise chain by handling the ultimate fulfillment value or + * rejection reason, and assuming responsibility for all errors. if an + * error propagates out of handleResult or handleFatalError, it will be + * rethrown to the host, resulting in a loud stack track on most platforms + * and a crash on some. + * @param {function?} handleResult + * @param {function?} handleError + * @returns {undefined} + */ + promisePrototype.done = function(handleResult, handleError) { + this.then(handleResult, handleError)['catch'](crash); + }; + + /** + * Shortcut for .then(function() { return value; }) + * @param {*} value + * @return {Promise} a promise that: + * - is fulfilled if value is not a promise, or + * - if value is a promise, will fulfill with its value, or reject + * with its reason. + */ + promisePrototype['yield'] = function(value) { + return this.then(function() { + return value; + }); + }; + + /** + * Runs a side effect when this promise fulfills, without changing the + * fulfillment value. + * @param {function} onFulfilledSideEffect + * @returns {Promise} + */ + promisePrototype.tap = function(onFulfilledSideEffect) { + return this.then(onFulfilledSideEffect)['yield'](this); + }; + + /** + * Assumes that this promise will fulfill with an array, and arranges + * for the onFulfilled to be called with the array as its argument list + * i.e. onFulfilled.apply(undefined, array). + * @param {function} onFulfilled function to receive spread arguments + * @return {Promise} + */ + promisePrototype.spread = function(onFulfilled) { + return this.then(function(array) { + // array may contain promises, so resolve its contents. + return all(array, function(array) { + return onFulfilled.apply(undef, array); + }); + }); + }; + + /** + * Shortcut for .then(onFulfilledOrRejected, onFulfilledOrRejected) + * @deprecated + */ + promisePrototype.always = function(onFulfilledOrRejected, onProgress) { + return this.then(onFulfilledOrRejected, onFulfilledOrRejected, onProgress); + }; + + /** + * Casts x to a trusted promise. If x is already a trusted promise, it is + * returned, otherwise a new trusted Promise which follows x is returned. + * @param {*} x + * @returns {Promise} + */ + function cast(x) { + return x instanceof Promise ? x : resolve(x); + } + + /** + * Returns a resolved promise. The returned promise will be + * - fulfilled with promiseOrValue if it is a value, or + * - if promiseOrValue is a promise + * - fulfilled with promiseOrValue's value after it is fulfilled + * - rejected with promiseOrValue's reason after it is rejected + * In contract to cast(x), this always creates a new Promise + * @param {*} x + * @return {Promise} + */ + function resolve(x) { + return promise(function(resolve) { + resolve(x); + }); + } + + /** + * Returns a rejected promise for the supplied promiseOrValue. The returned + * promise will be rejected with: + * - promiseOrValue, if it is a value, or + * - if promiseOrValue is a promise + * - promiseOrValue's value after it is fulfilled + * - promiseOrValue's reason after it is rejected + * @deprecated The behavior of when.reject in 3.0 will be to reject + * with x VERBATIM + * @param {*} x the rejected value of the returned promise + * @return {Promise} rejected promise + */ + function reject(x) { + return when(x, function(e) { + return new RejectedPromise(e); + }); + } + + /** + * Creates a {promise, resolver} pair, either or both of which + * may be given out safely to consumers. + * The resolver has resolve, reject, and progress. The promise + * has then plus extended promise API. + * + * @return {{ + * promise: Promise, + * resolve: function:Promise, + * reject: function:Promise, + * notify: function:Promise + * resolver: { + * resolve: function:Promise, + * reject: function:Promise, + * notify: function:Promise + * }}} + */ + function defer() { + var deferred, pending, resolved; + + // Optimize object shape + deferred = { + promise: undef, resolve: undef, reject: undef, notify: undef, + resolver: { resolve: undef, reject: undef, notify: undef } + }; + + deferred.promise = pending = promise(makeDeferred); + + return deferred; + + function makeDeferred(resolvePending, rejectPending, notifyPending) { + deferred.resolve = deferred.resolver.resolve = function(value) { + if(resolved) { + return resolve(value); + } + resolved = true; + resolvePending(value); + return pending; + }; + + deferred.reject = deferred.resolver.reject = function(reason) { + if(resolved) { + return resolve(new RejectedPromise(reason)); + } + resolved = true; + rejectPending(reason); + return pending; + }; + + deferred.notify = deferred.resolver.notify = function(update) { + notifyPending(update); + return update; + }; + } + } + + /** + * Run a queue of functions as quickly as possible, passing + * value to each. + */ + function runHandlers(queue, value) { + for (var i = 0; i < queue.length; i++) { + queue[i](value); + } + } + + /** + * Coerces x to a trusted Promise + * @param {*} x thing to coerce + * @returns {*} Guaranteed to return a trusted Promise. If x + * is trusted, returns x, otherwise, returns a new, trusted, already-resolved + * Promise whose resolution value is: + * * the resolution value of x if it's a foreign promise, or + * * x if it's a value + */ + function coerce(self, x) { + if (x === self) { + return new RejectedPromise(new TypeError()); + } + + if (x instanceof Promise) { + return x; + } + + try { + var untrustedThen = x === Object(x) && x.then; + + return typeof untrustedThen === 'function' + ? assimilate(untrustedThen, x) + : new FulfilledPromise(x); + } catch(e) { + return new RejectedPromise(e); + } + } + + /** + * Safely assimilates a foreign thenable by wrapping it in a trusted promise + * @param {function} untrustedThen x's then() method + * @param {object|function} x thenable + * @returns {Promise} + */ + function assimilate(untrustedThen, x) { + return promise(function (resolve, reject) { + enqueue(function() { + try { + fcall(untrustedThen, x, resolve, reject); + } catch(e) { + reject(e); + } + }); + }); + } + + makePromisePrototype = Object.create || + function(o) { + function PromisePrototype() {} + PromisePrototype.prototype = o; + return new PromisePrototype(); + }; + + /** + * Creates a fulfilled, local promise as a proxy for a value + * NOTE: must never be exposed + * @private + * @param {*} value fulfillment value + * @returns {Promise} + */ + function FulfilledPromise(value) { + this.value = value; + } + + FulfilledPromise.prototype = makePromisePrototype(promisePrototype); + + FulfilledPromise.prototype.inspect = function() { + return toFulfilledState(this.value); + }; + + FulfilledPromise.prototype._when = function(resolve, _, onFulfilled) { + try { + resolve(typeof onFulfilled === 'function' ? onFulfilled(this.value) : this.value); + } catch(e) { + resolve(new RejectedPromise(e)); + } + }; + + /** + * Creates a rejected, local promise as a proxy for a value + * NOTE: must never be exposed + * @private + * @param {*} reason rejection reason + * @returns {Promise} + */ + function RejectedPromise(reason) { + this.value = reason; + } + + RejectedPromise.prototype = makePromisePrototype(promisePrototype); + + RejectedPromise.prototype.inspect = function() { + return toRejectedState(this.value); + }; + + RejectedPromise.prototype._when = function(resolve, _, __, onRejected) { + try { + resolve(typeof onRejected === 'function' ? onRejected(this.value) : this); + } catch(e) { + resolve(new RejectedPromise(e)); + } + }; + + /** + * Create a progress promise with the supplied update. + * @private + * @param {*} value progress update value + * @return {Promise} progress promise + */ + function ProgressingPromise(value) { + this.value = value; + } + + ProgressingPromise.prototype = makePromisePrototype(promisePrototype); + + ProgressingPromise.prototype._when = function(_, notify, f, r, u) { + try { + notify(typeof u === 'function' ? u(this.value) : this.value); + } catch(e) { + notify(e); + } + }; + + /** + * Update a PromiseStatus monitor object with the outcome + * of the supplied value promise. + * @param {Promise} value + * @param {PromiseStatus} status + */ + function updateStatus(value, status) { + value.then(statusFulfilled, statusRejected); + + function statusFulfilled() { status.fulfilled(); } + function statusRejected(r) { status.rejected(r); } + } + + /** + * Determines if x is promise-like, i.e. a thenable object + * NOTE: Will return true for *any thenable object*, and isn't truly + * safe, since it may attempt to access the `then` property of x (i.e. + * clever/malicious getters may do weird things) + * @param {*} x anything + * @returns {boolean} true if x is promise-like + */ + function isPromiseLike(x) { + return x && typeof x.then === 'function'; + } + + /** + * Initiates a competitive race, returning a promise that will resolve when + * howMany of the supplied promisesOrValues have resolved, or will reject when + * it becomes impossible for howMany to resolve, for example, when + * (promisesOrValues.length - howMany) + 1 input promises reject. + * + * @param {Array} promisesOrValues array of anything, may contain a mix + * of promises and values + * @param howMany {number} number of promisesOrValues to resolve + * @param {function?} [onFulfilled] DEPRECATED, use returnedPromise.then() + * @param {function?} [onRejected] DEPRECATED, use returnedPromise.then() + * @param {function?} [onProgress] DEPRECATED, use returnedPromise.then() + * @returns {Promise} promise that will resolve to an array of howMany values that + * resolved first, or will reject with an array of + * (promisesOrValues.length - howMany) + 1 rejection reasons. + */ + function some(promisesOrValues, howMany, onFulfilled, onRejected, onProgress) { + + return when(promisesOrValues, function(promisesOrValues) { + + return promise(resolveSome).then(onFulfilled, onRejected, onProgress); + + function resolveSome(resolve, reject, notify) { + var toResolve, toReject, values, reasons, fulfillOne, rejectOne, len, i; + + len = promisesOrValues.length >>> 0; + + toResolve = Math.max(0, Math.min(howMany, len)); + values = []; + + toReject = (len - toResolve) + 1; + reasons = []; + + // No items in the input, resolve immediately + if (!toResolve) { + resolve(values); + + } else { + rejectOne = function(reason) { + reasons.push(reason); + if(!--toReject) { + fulfillOne = rejectOne = identity; + reject(reasons); + } + }; + + fulfillOne = function(val) { + // This orders the values based on promise resolution order + values.push(val); + if (!--toResolve) { + fulfillOne = rejectOne = identity; + resolve(values); + } + }; + + for(i = 0; i < len; ++i) { + if(i in promisesOrValues) { + when(promisesOrValues[i], fulfiller, rejecter, notify); + } + } + } + + function rejecter(reason) { + rejectOne(reason); + } + + function fulfiller(val) { + fulfillOne(val); + } + } + }); + } + + /** + * Initiates a competitive race, returning a promise that will resolve when + * any one of the supplied promisesOrValues has resolved or will reject when + * *all* promisesOrValues have rejected. + * + * @param {Array|Promise} promisesOrValues array of anything, may contain a mix + * of {@link Promise}s and values + * @param {function?} [onFulfilled] DEPRECATED, use returnedPromise.then() + * @param {function?} [onRejected] DEPRECATED, use returnedPromise.then() + * @param {function?} [onProgress] DEPRECATED, use returnedPromise.then() + * @returns {Promise} promise that will resolve to the value that resolved first, or + * will reject with an array of all rejected inputs. + */ + function any(promisesOrValues, onFulfilled, onRejected, onProgress) { + + function unwrapSingleResult(val) { + return onFulfilled ? onFulfilled(val[0]) : val[0]; + } + + return some(promisesOrValues, 1, unwrapSingleResult, onRejected, onProgress); + } + + /** + * Return a promise that will resolve only once all the supplied promisesOrValues + * have resolved. The resolution value of the returned promise will be an array + * containing the resolution values of each of the promisesOrValues. + * @memberOf when + * + * @param {Array|Promise} promisesOrValues array of anything, may contain a mix + * of {@link Promise}s and values + * @param {function?} [onFulfilled] DEPRECATED, use returnedPromise.then() + * @param {function?} [onRejected] DEPRECATED, use returnedPromise.then() + * @param {function?} [onProgress] DEPRECATED, use returnedPromise.then() + * @returns {Promise} + */ + function all(promisesOrValues, onFulfilled, onRejected, onProgress) { + return _map(promisesOrValues, identity).then(onFulfilled, onRejected, onProgress); + } + + /** + * Joins multiple promises into a single returned promise. + * @return {Promise} a promise that will fulfill when *all* the input promises + * have fulfilled, or will reject when *any one* of the input promises rejects. + */ + function join(/* ...promises */) { + return _map(arguments, identity); + } + + /** + * Settles all input promises such that they are guaranteed not to + * be pending once the returned promise fulfills. The returned promise + * will always fulfill, except in the case where `array` is a promise + * that rejects. + * @param {Array|Promise} array or promise for array of promises to settle + * @returns {Promise} promise that always fulfills with an array of + * outcome snapshots for each input promise. + */ + function settle(array) { + return _map(array, toFulfilledState, toRejectedState); + } + + /** + * Promise-aware array map function, similar to `Array.prototype.map()`, + * but input array may contain promises or values. + * @param {Array|Promise} array array of anything, may contain promises and values + * @param {function} mapFunc map function which may return a promise or value + * @returns {Promise} promise that will fulfill with an array of mapped values + * or reject if any input promise rejects. + */ + function map(array, mapFunc) { + return _map(array, mapFunc); + } + + /** + * Internal map that allows a fallback to handle rejections + * @param {Array|Promise} array array of anything, may contain promises and values + * @param {function} mapFunc map function which may return a promise or value + * @param {function?} fallback function to handle rejected promises + * @returns {Promise} promise that will fulfill with an array of mapped values + * or reject if any input promise rejects. + */ + function _map(array, mapFunc, fallback) { + return when(array, function(array) { + + return new Promise(resolveMap); + + function resolveMap(resolve, reject, notify) { + var results, len, toResolve, i; + + // Since we know the resulting length, we can preallocate the results + // array to avoid array expansions. + toResolve = len = array.length >>> 0; + results = []; + + if(!toResolve) { + resolve(results); + return; + } + + // Since mapFunc may be async, get all invocations of it into flight + for(i = 0; i < len; i++) { + if(i in array) { + resolveOne(array[i], i); + } else { + --toResolve; + } + } + + function resolveOne(item, i) { + when(item, mapFunc, fallback).then(function(mapped) { + results[i] = mapped; + + if(!--toResolve) { + resolve(results); + } + }, reject, notify); + } + } + }); + } + + /** + * Traditional reduce function, similar to `Array.prototype.reduce()`, but + * input may contain promises and/or values, and reduceFunc + * may return either a value or a promise, *and* initialValue may + * be a promise for the starting value. + * + * @param {Array|Promise} promise array or promise for an array of anything, + * may contain a mix of promises and values. + * @param {function} reduceFunc reduce function reduce(currentValue, nextValue, index, total), + * where total is the total number of items being reduced, and will be the same + * in each call to reduceFunc. + * @returns {Promise} that will resolve to the final reduced value + */ + function reduce(promise, reduceFunc /*, initialValue */) { + var args = fcall(slice, arguments, 1); + + return when(promise, function(array) { + var total; + + total = array.length; + + // Wrap the supplied reduceFunc with one that handles promises and then + // delegates to the supplied. + args[0] = function (current, val, i) { + return when(current, function (c) { + return when(val, function (value) { + return reduceFunc(c, value, i, total); + }); + }); + }; + + return reduceArray.apply(array, args); + }); + } + + // Snapshot states + + /** + * Creates a fulfilled state snapshot + * @private + * @param {*} x any value + * @returns {{state:'fulfilled',value:*}} + */ + function toFulfilledState(x) { + return { state: 'fulfilled', value: x }; + } + + /** + * Creates a rejected state snapshot + * @private + * @param {*} x any reason + * @returns {{state:'rejected',reason:*}} + */ + function toRejectedState(x) { + return { state: 'rejected', reason: x }; + } + + /** + * Creates a pending state snapshot + * @private + * @returns {{state:'pending'}} + */ + function toPendingState() { + return { state: 'pending' }; + } + + // + // Internals, utilities, etc. + // + + var promisePrototype, makePromisePrototype, reduceArray, slice, fcall, nextTick, handlerQueue, + funcProto, call, arrayProto, monitorApi, + capturedSetTimeout, cjsRequire, MutationObs, undef; + + cjsRequire = require; + + // + // Shared handler queue processing + // + // Credit to Twisol (https://github.com/Twisol) for suggesting + // this type of extensible queue + trampoline approach for + // next-tick conflation. + + handlerQueue = []; + + /** + * Enqueue a task. If the queue is not currently scheduled to be + * drained, schedule it. + * @param {function} task + */ + function enqueue(task) { + if(handlerQueue.push(task) === 1) { + nextTick(drainQueue); + } + } + + /** + * Drain the handler queue entirely, being careful to allow the + * queue to be extended while it is being processed, and to continue + * processing until it is truly empty. + */ + function drainQueue() { + runHandlers(handlerQueue); + handlerQueue = []; + } + + // Allow attaching the monitor to when() if env has no console + monitorApi = typeof console !== 'undefined' ? console : when; + + // Sniff "best" async scheduling option + // Prefer process.nextTick or MutationObserver, then check for + // vertx and finally fall back to setTimeout + /*global process,document,setTimeout,MutationObserver,WebKitMutationObserver*/ + if (typeof process === 'object' && process.nextTick) { + nextTick = process.nextTick; + } else if(MutationObs = + (typeof MutationObserver === 'function' && MutationObserver) || + (typeof WebKitMutationObserver === 'function' && WebKitMutationObserver)) { + nextTick = (function(document, MutationObserver, drainQueue) { + var el = document.createElement('div'); + new MutationObserver(drainQueue).observe(el, { attributes: true }); + + return function() { + el.setAttribute('x', 'x'); + }; + }(document, MutationObs, drainQueue)); + } else { + try { + // vert.x 1.x || 2.x + nextTick = cjsRequire('vertx').runOnLoop || cjsRequire('vertx').runOnContext; + } catch(ignore) { + // capture setTimeout to avoid being caught by fake timers + // used in time based tests + capturedSetTimeout = setTimeout; + nextTick = function(t) { capturedSetTimeout(t, 0); }; + } + } + + // + // Capture/polyfill function and array utils + // + + // Safe function calls + funcProto = Function.prototype; + call = funcProto.call; + fcall = funcProto.bind + ? call.bind(call) + : function(f, context) { + return f.apply(context, slice.call(arguments, 2)); + }; + + // Safe array ops + arrayProto = []; + slice = arrayProto.slice; + + // ES5 reduce implementation if native not available + // See: http://es5.github.com/#x15.4.4.21 as there are many + // specifics and edge cases. ES5 dictates that reduce.length === 1 + // This implementation deviates from ES5 spec in the following ways: + // 1. It does not check if reduceFunc is a Callable + reduceArray = arrayProto.reduce || + function(reduceFunc /*, initialValue */) { + /*jshint maxcomplexity: 7*/ + var arr, args, reduced, len, i; + + i = 0; + arr = Object(this); + len = arr.length >>> 0; + args = arguments; + + // If no initialValue, use first item of array (we know length !== 0 here) + // and adjust i to start at second item + if(args.length <= 1) { + // Skip to the first real element in the array + for(;;) { + if(i in arr) { + reduced = arr[i++]; + break; + } + + // If we reached the end of the array without finding any real + // elements, it's a TypeError + if(++i >= len) { + throw new TypeError(); + } + } + } else { + // If initialValue provided, use it + reduced = args[1]; + } + + // Do the actual reduce + for(;i < len; ++i) { + if(i in arr) { + reduced = reduceFunc(reduced, arr[i], i, arr); + } + } + + return reduced; + }; + + function identity(x) { + return x; + } + + function crash(fatalError) { + if(typeof monitorApi.reportUnhandled === 'function') { + monitorApi.reportUnhandled(); + } else { + enqueue(function() { + throw fatalError; + }); + } + + throw fatalError; + } + + return when; +}); +})(typeof define === 'function' && define.amd ? define : function (factory) { module.exports = factory(require); }); + +}).call(this,require('_process')) +},{"_process":1}],5:[function(require,module,exports){ +"use strict"; + +var _extends = function (child, parent) { + child.prototype = Object.create(parent.prototype, { + constructor: { + value: child, + enumerable: false, + writable: true, + configurable: true + } + }); + child.__proto__ = parent; +}; + +var Events = require("./utils/events"); + +var Auth = (function (Events) { + var Auth = + /** + * Deals with user registration/authentication + * @module Hook + * @class Hook.Auth + * @extends Hook.Events + * @param {Hook.Client} client + * @constructor + */ + function Auth(client) { + this.client = client; + + /** + * @property currentUser + * @type {Object} + */ + this.currentUser = null; + + var now = new Date(), tokenExpiration = new Date(window.localStorage.getItem(this.client.app_id + "-" + Auth.AUTH_TOKEN_EXPIRATION)), currentUser = window.localStorage.getItem(this.client.app_id + "-" + Auth.AUTH_DATA_KEY); + + // Fill current user only when it isn't expired yet. + if (currentUser && now.getTime() < tokenExpiration.getTime()) { + this.currentUser = JSON.parse(currentUser); // localStorage only supports recording strings, so we need to parse it + } + }; + + _extends(Auth, Events); + + Auth.prototype.setCurrentUser = function (data) { + if (!data) { + // trigger logout event + this.trigger("logout", this.currentUser); + this.currentUser = data; + + window.localStorage.removeItem(this.client.app_id + "-" + Auth.AUTH_TOKEN_KEY); + window.localStorage.removeItem(this.client.app_id + "-" + Auth.AUTH_DATA_KEY); + } else { + window.localStorage.setItem(this.client.app_id + "-" + Auth.AUTH_DATA_KEY, JSON.stringify(data)); + + // trigger login event + this.currentUser = data; + this.trigger("login", data); + } + + return this; + }; + + Auth.prototype.register = function (data) { + var promise, that = this; + if (typeof (data) === "undefined") { + data = {}; + } + promise = this.client.post("auth/email", data); + promise.then(function (data) { + that._registerToken(data); + }); + return promise; + }; + + Auth.prototype.login = function (data) { + var promise, that = this; + if (typeof (data) === "undefined") { + data = {}; + } + promise = this.client.post("auth/email/login", data); + promise.then(function (data) { + that._registerToken(data); + }); + return promise; + }; + + Auth.prototype.update = function (data) { + if (!this.currentUser) { + throw new Error("not logged in."); + } + + var that = this; + var promise = this.client.collection("auth").update(this.currentUser._id, data); + + // update localStorage info + promise.then(function (data) { + that.setCurrentUser(data); + }); + + return promise; + }; + + Auth.prototype.forgotPassword = function (data) { + if (typeof (data) === "undefined") { + data = {}; + } + return this.client.post("auth/email/forgotPassword", data); + }; + + Auth.prototype.resetPassword = function (data) { + if (typeof (data) === "string") { + data = { password: data }; + } + if (typeof (data.token) === "undefined") { + data.token = window.location.href.match(/[\?|&]token=([a-z0-9]+)/); + data.token = (data.token && data.token[1]); + } + if (typeof (data.token) !== "string") { + throw new Error("forgot password token required. Remember to use 'auth.forgotPassword' before 'auth.resetPassword'."); + } + if (typeof (data.password) !== "string") { + throw new Error("new password required."); + } + return this.client.post("auth/email/resetPassword", data); + }; + + Auth.prototype.logout = function () { + return this.setCurrentUser(null); + }; + + Auth.prototype.getToken = function () { + return window.localStorage.getItem(this.client.app_id + "-" + Auth.AUTH_TOKEN_KEY); + }; + + Auth.prototype._registerToken = function (data) { + if (data.token) { + // register authentication token on localStorage + window.localStorage.setItem(this.client.app_id + "-" + Auth.AUTH_TOKEN_KEY, data.token.token); + window.localStorage.setItem(this.client.app_id + "-" + Auth.AUTH_TOKEN_EXPIRATION, data.token.expire_at); + delete data.token; + + // Store curent user + this.setCurrentUser(data); + } + }; + + return Auth; +})(Events); + +// Constrants +Auth.AUTH_DATA_KEY = "hook-auth-data"; +Auth.AUTH_TOKEN_KEY = "hook-auth-token"; +Auth.AUTH_TOKEN_EXPIRATION = "hook-auth-token-expiration"; + +// Export +module.exports = Auth; + +},{"./utils/events":13}],6:[function(require,module,exports){ +"use strict"; + +var EventSource = require("event-source-polyfill"); + +module.exports = (function () { + var Channel = + + /** + * @module Hook + * @class Hook.Channel.SSE + * + * @param {Client} client + * @param {String} namespace + * @param {Object} options optional + * @constructor + */ + function Channel(client, collection, options) { + this.client = client; + this.collection = collection; + this.client_id = null; + this.callbacks = {}; + this.options = options || {}; + this.readyState = null; + }; + + Channel.prototype.subscribe = function (event, callback) { + if (typeof (callback) === "undefined") { + callback = event; + event = "_default"; + } + this.callbacks[event] = callback; + + var promise = this.connect(); + + if (this.readyState === EventSource.CONNECTING) { + var that = this; + promise.then(function () { + that.event_source.onopen = function (e) { + that.readyState = e.readyState; + that._trigger.apply(that, ["state:" + e.type, e]); + }; + that.event_source.onerror = function (e) { + that.readyState = e.readyState; + that._trigger.apply(that, ["state:" + e.type, e]); + }; + that.event_source.onmessage = function (e) { + var data = JSON.parse(e.data), event = data.event; + delete data.event; + that._trigger.apply(that, [event, data]); + }; + }); + } + + return promise; + }; + + Channel.prototype._trigger = function (event, data) { + console.log("Trigger: ", event, data); + // always try to dispatch default message handler + if (event.indexOf("state:") === -1 && this.callbacks._default) { + this.callbacks._default.apply(this, [event, data]); + } + // try to dispatch message handler for this event + if (this.callbacks[event]) { + this.callbacks[event].apply(this, [data]); + } + }; + + Channel.prototype.isConnected = function () { + return (this.readyState !== null && this.readyState !== EventSource.CLOSED); + }; + + Channel.prototype.unsubscribe = function (event) { + if (this.callbacks[event]) { + this.callbacks[event] = null; + } + }; + + Channel.prototype.publish = function (event, message) { + if (typeof (message) === "undefined") { + message = {}; + } + message.client_id = this.client_id; + message.event = event; + return this.collection.create(message); + }; + + Channel.prototype.connect = function () { + // Return success if already connected. + if (this.readyState !== null) { + var deferred = when.defer(); + deferred.resolver.resolve(); + return deferred.promise; + } + + this.readyState = EventSource.CONNECTING; + this._trigger.apply(this, ["state:connecting"]); + + var that = this; + + return this.publish("connected").then(function (data) { + that.collection.where("updated_at", ">", data.updated_at); + + var queryString = that.client.getCredentialsParams(); + + // time to wait for retry, after connection closes + var query = that.collection.buildQuery(); + query.stream = { + refresh: that.options.refresh_timeout || 1, + retry: that.options.retry_timeout || 1 + }; + + that.client_id = data.client_id; + that.event_source = new EventSource(that.collection.client.url + that.collection.segments + queryString + "&" + JSON.stringify(query), { + withCredentials: true + }); + + // bind unload function to force user disconnection + window.addEventListener("unload", function (e) { + // send synchronous disconnected event + that.disconnect(true); + }); + }, function (data) { + that.readyState = EventSource.CLOSED; + that._trigger.apply(that, ["state:error", data]); + }); + }; + + Channel.prototype.disconnect = function (sync) { + if (this.isConnected()) { + this.close(); + this.publish("disconnected", { + _sync: ((typeof (sync) !== "undefined") && sync) + }); + } + return this; + }; + + Channel.prototype.close = function () { + if (this.event_source) { + this.event_source.close(); + } + this.readyState = EventSource.CLOSED; + return this; + }; + + return Channel; +})(); + +},{"event-source-polyfill":2}],7:[function(require,module,exports){ +"use strict"; + +var Auth = require("./auth"); +var Collection = require("./collection"); +var Channel = require("./channel"); +var KeyValues = require("./key_values"); +var System = require("./system"); +var PluginManager = require("./plugin_manager"); +var uxhr = require("uxhr"); +var when = require("when"); +require("./vendor/json.date-extensions"); + +module.exports = (function () { + var Client = + + /** + * Hook.Client is the entry-point for using hook. + * + * You should instantiate a global javascript client for consuming hook. + * + * ```javascript + * var client = new Hook.Client({ + * url: "http://local-or-remote-hook-address.com/public/index.php/", + * app_id: 1, // your app's id + * key: 'test' // your app's public key + * }); + * ``` + * + * @module Hook + * @class Hook.Client + * + * @param {Object} options + * @param {String} options.app_id + * @param {String} options.key + * @param {String} options.endpoint default: http://hook.dev + * + * @constructor + */ + + function Client(options) { + if (!options) { + options = {}; + } + this.endpoint = options.endpoint || options.url || window.location.origin; + this.app_id = options.app_id || options.appId || ""; + this.key = options.key || ""; + + this.options = (typeof (options.options) !== "undefined") ? options.options : {}; + + // append last slash if doesn't have it + if (this.endpoint.lastIndexOf("/") != this.endpoint.length - 1) { + this.endpoint += "/"; + } + + /** + * @property {Hook.KeyValues} keys + */ + this.keys = new KeyValues(this); + + /** + * @property {Hook.Auth} auth + */ + this.auth = new Auth(this); + + /** + * @property {Hook.System} system + */ + this.system = new System(this); + + // Setup plugins + PluginManager.setup(this); + }; + + Client.prototype.collection = function (collectionName) { + return new Collection(this, collectionName); + }; + + Client.prototype.channel = function (name, options) { + if (typeof (options) === "undefined") { + options = {}; + } + + var collection = this.collection(name); + collection.segments = collection.segments.replace("collection/", "channels/"); + + // Use 'SSE' as default transport layer + if (!options.transport) { + options.transport = "sse"; + } + options.transport = options.transport.toUpperCase(); + + return new Channel(this, collection, options); + }; + + Client.prototype.url = function (route, params) { + var serializedParams = ""; + if (params) { + serializedParams = "&" + this.serialize(params); + } + return this.endpoint + route + this.getCredentialsParams() + serializedParams; + }; + + Client.prototype.post = function (segments, data) { + if (typeof (data) === "undefined") { + data = {}; + } + return this.request(segments, "POST", data); + }; + + Client.prototype.get = function (segments, data) { + return this.request(segments, "GET", data); + }; + + Client.prototype.put = function (segments, data) { + return this.request(segments, "PUT", data); + }; + + Client.prototype.remove = function (segments, data) { + return this.request(segments, "DELETE", data); + }; + + Client.prototype.request = function (segments, method, data) { + var payload, request_headers, deferred = when.defer(), synchronous = false; + + // FIXME: find a better way to write this + if (data && data._sync) { + delete data._sync; + synchronous = true; + } + + // Compute payload + payload = this.getPayload(method, data); + + // Compute request headers + request_headers = this.getHeaders(); + if (!(payload instanceof FormData)) { + request_headers["Content-Type"] = "application/json"; // exchange data via JSON to keep basic data types + } + + // Use method override? (some web servers doesn't respond to DELETE/PUT requests) + if (method !== "GET" && method !== "POST" && this.options.method_override) { + request_headers["X-HTTP-Method-Override"] = method; + method = "POST"; + } + + if (typeof (XDomainRequest) !== "undefined") { + // XMLHttpRequest#setRequestHeader isn't implemented on Internet Explorer's XDomainRequest + segments += this.getCredentialsParams(); + } + + deferred.promise.xhr = uxhr(this.endpoint + segments, payload, { + method: method, + headers: request_headers, + sync: synchronous, + success: function (response) { + var data = null; + try { + data = JSON.parseWithDate(response); + } catch (e) {} + + if (data === false || data === null || data.error) { + // log error on console + if (data && data.error) { + console.error(data.error); + } + deferred.resolver.reject(data); + } else { + deferred.resolver.resolve(data); + } + }, + error: function (response) { + var data = null; + try { + data = JSON.parseWithDate(response); + } catch (e) {} + console.log("Error: ", data || "Invalid JSON response."); + deferred.resolver.reject(data); + } + }); + + return deferred.promise; + }; + + Client.prototype.getHeaders = function () { + // App authentication request headers + var request_headers = { + "X-App-Id": this.app_id, + "X-App-Key": this.key + }, auth_token; + + // Forward user authentication token, if it is set + var auth_token = this.auth.getToken(); + if (auth_token) { + request_headers["X-Auth-Token"] = auth_token; + } + return request_headers; + }; + + Client.prototype.getPayload = function (method, data) { + var payload = null; + if (data) { + if (data instanceof FormData) { + payload = data; + } else if (method !== "GET") { + var field, value, filename, formdata = new FormData(), worth = false; + + for (field in data) { + value = data[field]; + filename = null; + + if (typeof (value) === "undefined" || value === null) { + continue; + } else if (typeof (value) === "boolean" || typeof (value) === "number" || typeof (value) === "string") { + value = value.toString(); + + // IE8 can't compare instanceof String with HTMLInputElement. + } else if (value instanceof HTMLInputElement && value.files && value.files.length > 0) { + filename = value.files[0].name; + value = value.files[0]; + worth = true; + } else if (value instanceof HTMLInputElement) { + value = value.value; + } else if (value instanceof HTMLCanvasElement) { + if (typeof (dataURLtoBlob) === "undefined") { + throw new Error("Please add this dependency in your project: https://github.com/blueimp/JavaScript-Canvas-to-Blob"); + } + value = dataURLtoBlob(value.toDataURL()); + worth = true; + filename = "canvas.png"; + } else if (typeof (Blob) !== "undefined" && value instanceof Blob) { + worth = true; + filename = "blob." + value.type.match(/\/(.*)/)[1]; // get extension from blob mime/type + } + + // + // Consider serialization to keep data types here: http://phpjs.org/functions/serialize/ + // + if (!(value instanceof Array)) { + // fixme + if (typeof (value) === "string") { + formdata.append(field, value); + } else { + try { + formdata.append(field, value, filename || "file"); + } catch (e) {} + } + } + } + + if (worth) { + payload = formdata; + } + } + + payload = payload || JSON.stringify(data, function (key, value) { + if (this[key] instanceof Date) { + return Math.round(this[key].getTime() / 1000); + } else { + return value; + } + }); + + // empty payload, return null. + if (payload == "{}") { + return null; + } + + if (method === "GET" && typeof (payload) === "string") { + payload = encodeURIComponent(payload); + } + } + return payload; + }; + + Client.prototype.getCredentialsParams = function () { + var params = "?X-App-Id=" + this.app_id + "&X-App-Key=" + this.key; + var auth_token = this.auth.getToken(); + if (auth_token) { + params += "&X-Auth-Token=" + auth_token; + } + return params; + }; + + Client.prototype.serialize = function (obj, prefix) { + var str = []; + for (var p in obj) { + if (obj.hasOwnProperty(p)) { + var k = prefix ? prefix + "[" + p + "]" : p, v = obj[p]; + str.push(typeof v == "object" ? this.serialize(v, k) : encodeURIComponent(k) + "=" + encodeURIComponent(v)); + } + } + return str.join("&"); + }; + + return Client; +})(); + +},{"./auth":5,"./channel":6,"./collection":8,"./key_values":10,"./plugin_manager":11,"./system":12,"./vendor/json.date-extensions":14,"uxhr":3,"when":4}],8:[function(require,module,exports){ +"use strict"; + +module.exports = (function () { + var Collection = + + /** + * @module Hook + * @class Hook.Collection + * + * @param {Hook.Client} client + * @param {String} name + * @constructor + */ + function Collection(client, name) { + this.client = client; + + this.name = this._validateName(name); + this.reset(); + + this.segments = "collection/" + this.name; + }; + + Collection.prototype.create = function (data) { + return this.client.post(this.segments, data); + }; + + Collection.prototype.select = function () { + this.options.select = arguments; + return this; + }; + + Collection.prototype.get = function () { + return this.client.get(this.segments, this.buildQuery()); + }; + + Collection.prototype.where = function (objects, _operation, _value, _boolean) { + var field, operation = (typeof (_value) === "undefined") ? "=" : _operation, value = (typeof (_value) === "undefined") ? _operation : _value, boolean = (typeof (_boolean) === "undefined") ? "and" : _boolean; + + if (typeof (objects) === "object") { + for (field in objects) { + if (objects.hasOwnProperty(field)) { + operation = "="; + if (objects[field] instanceof Array) { + operation = objects[field][0]; + value = objects[field][1]; + } else { + value = objects[field]; + } + this.addWhere(field, operation, value, boolean); + } + } + } else { + this.addWhere(objects, operation, value, boolean); + } + + return this; + }; + + Collection.prototype.orWhere = function (objects, _operation, _value) { + return this.where(objects, _operation, _value, "or"); + }; + + Collection.prototype.find = function (_id) { + var promise = this.client.get(this.segments + "/" + _id, this.buildQuery()); + if (arguments.length > 1) { + return promise.then.apply(promise, Array.prototype.slice.call(arguments, 1)); + } + return promise; + }; + + Collection.prototype.join = function () { + this.options["with"] = arguments; + return this; + }; + + Collection.prototype.distinct = function () { + this.options.distinct = true; + return this; + }; + + Collection.prototype.group = function () { + this._group = arguments; + return this; + }; + + Collection.prototype.count = function (field) { + field = (typeof (field) === "undefined") ? "*" : field; + this.options.aggregation = { method: "count", field: field }; + var promise = this.get(); + if (arguments.length > 0) { + promise.then.apply(promise, arguments); + } + return promise; + }; + + Collection.prototype.max = function (field) { + this.options.aggregation = { method: "max", field: field }; + var promise = this.get(); + if (arguments.length > 1) { + promise.then.apply(promise, Array.prototype.slice.call(arguments, 1)); + } + return promise; + }; + + Collection.prototype.min = function (field) { + this.options.aggregation = { method: "min", field: field }; + var promise = this.get(); + if (arguments.length > 1) { + promise.then.apply(promise, Array.prototype.slice.call(arguments, 1)); + } + return promise; + }; + + Collection.prototype.avg = function (field) { + this.options.aggregation = { method: "avg", field: field }; + var promise = this.get(); + if (arguments.length > 1) { + promise.then.apply(promise, Array.prototype.slice.call(arguments, 1)); + } + return promise; + }; + + Collection.prototype.sum = function (field) { + this.options.aggregation = { method: "sum", field: field }; + var promise = this.get(); + if (arguments.length > 1) { + promise.then.apply(promise, Array.prototype.slice.call(arguments, 1)); + } + return promise; + }; + + Collection.prototype.first = function () { + this.options.first = 1; + var promise = this.get(); + promise.then.apply(promise, arguments); + return promise; + }; + + Collection.prototype.firstOrCreate = function (data) { + this.options.first = 1; + this.options.data = data; + return this.client.post(this.segments, this.buildQuery()); + }; + + Collection.prototype.each = function (cb) { + var promise = this.then(function (data) { + for (var i = 0; i < data.length; i++) { + cb(data[i]); + } + }); + return promise; + }; + + Collection.prototype.then = function () { + var promise = this.get(); + promise.then.apply(promise, arguments); + return promise; + }; + + Collection.prototype.debug = function (func) { + func = (typeof (func) == "undefined") ? "log" : func; + return this.then(console[func].bind(console)); + }; + + Collection.prototype.reset = function () { + this.options = {}; + this.wheres = []; + this.ordering = []; + this._group = []; + this._limit = null; + this._offset = null; + this._remember = null; + return this; + }; + + Collection.prototype.sort = function (field, direction) { + if (!direction) { + direction = "asc"; + } else if (typeof (direction) === "number") { + direction = (parseInt(direction, 10) === -1) ? "desc" : "asc"; + } + this.ordering.push([field, direction]); + return this; + }; + + Collection.prototype.limit = function (int) { + this._limit = int; + return this; + }; + + Collection.prototype.offset = function (int) { + this._offset = int; + return this; + }; + + Collection.prototype.remember = function (minutes) { + this._remember = minutes; + return this; + }; + + Collection.prototype.channel = function (options) { + throw new Error("Not implemented."); + // return new Hook.Channel(this.client, this, options); + }; + + Collection.prototype.paginate = function (perPage, onComplete, onError) { + var pagination = new Hook.Pagination(this); + + if (!onComplete) { + onComplete = perPage; + perPage = Hook.defaults.perPage; + } + + this.options.paginate = perPage; + this.then(function (data) { + pagination._fetchComplete(data); + if (onComplete) { + onComplete(pagination); + } + }, onError); + + return pagination; + }; + + Collection.prototype.drop = function () { + return this.client.remove(this.segments); + }; + + Collection.prototype.remove = function (_id) { + var path = this.segments; + if (typeof (_id) !== "undefined") { + path += "/" + _id; + } + return this.client.remove(path, this.buildQuery()); + }; + + Collection.prototype.update = function (_id, data) { + return this.client.post(this.segments + "/" + _id, data); + }; + + Collection.prototype.increment = function (field, value) { + this.options.operation = { method: "increment", field: field, value: value }; + var promise = this.client.put(this.segments, this.buildQuery()); + if (arguments.length > 0) { + promise.then.apply(promise, arguments); + } + return promise; + }; + + Collection.prototype.decrement = function (field, value) { + this.options.operation = { method: "decrement", field: field, value: value }; + var promise = this.client.put(this.segments, this.buildQuery()); + if (arguments.length > 0) { + promise.then.apply(promise, arguments); + } + return promise; + }; + + Collection.prototype.updateAll = function (data) { + this.options.data = data; + return this.client.put(this.segments, this.buildQuery()); + }; + + Collection.prototype.addWhere = function (field, operation, value, boolean) { + this.wheres.push([field, operation.toLowerCase(), value, boolean]); + return this; + }; + + Collection.prototype._validateName = function (name) { + var regexp = /^[a-z_\/0-9]+$/; + + if (!regexp.test(name)) { + throw new Error("Invalid name: " + name); + } + + return name; + }; + + Collection.prototype.buildQuery = function () { + var query = {}; + + // apply limit / offset and remember + if (this._limit !== null) { + query.limit = this._limit; + } + if (this._offset !== null) { + query.offset = this._offset; + } + if (this._remember !== null) { + query.remember = this._remember; + } + + // apply wheres + if (this.wheres.length > 0) { + query.q = this.wheres; + } + + // apply ordering + if (this.ordering.length > 0) { + query.s = this.ordering; + } + + // apply group + if (this._group.length > 0) { + query.g = this._group; + } + + var f, shortnames = { + paginate: "p", // pagination (perPage) + first: "f", // first / firstOrCreate + aggregation: "aggr", // min / max / count / avg / sum + operation: "op", // increment / decrement + data: "data", // updateAll / firstOrCreate + "with": "with", // join / relationships + select: "select", // fields to return + distinct: "distinct" // use distinct operation + }; + + for (f in shortnames) { + if (this.options[f]) { + query[shortnames[f]] = this.options[f]; + } + } + + // clear wheres/ordering for future calls + this.reset(); + + return query; + }; + + return Collection; +})(); + +},{}],9:[function(require,module,exports){ +"use strict"; + +/** + * @module Hook + */ + +var Hook = { + VERSION: "0.3.0", + + Events: require("./utils/events"), + Client: require("./client"), + Plugins: require("./plugin_manager"), + + defaults: { + perPage: 50 + } +}; + +// +// Legacy browser support +// +if (typeof (window.FormData) === "undefined") { + // IE9<: prevent crash when FormData isn't defined. + window.FormData = function () { + this.append = function () {}; + }; +} + +if (!window.location.origin) { + // Support location.origin + window.location.origin = window.location.protocol + "//" + window.location.hostname + (window.location.port ? ":" + window.location.port : ""); +} + +module.exports = Hook; + +},{"./client":7,"./plugin_manager":11,"./utils/events":13}],10:[function(require,module,exports){ +"use strict"; + +module.exports = (function () { + var KeyValues = + + /** + * @module Hook + * @class Hook.KeyValues + * + * @param {Hook.Client} client + * @constructor + */ + function KeyValues(client) { + this.client = client; + }; + + KeyValues.prototype.get = function (key, callback) { + var promise = this.client.get("key/" + key); + if (callback) { + promise.then.apply(promise, [callback]); + } + return promise; + }; + + KeyValues.prototype.set = function (key, value) { + return this.client.post("key/" + key, { value: value }); + }; + + return KeyValues; +})(); + +},{}],11:[function(require,module,exports){ +"use strict"; + +var plugins = []; + +/** + * @module Hook + * @class Hook.PluginManager + */ + +var PluginManager = (function () { + var PluginManager = function PluginManager() {}; + + PluginManager.setup = function (client) { + for (var i = 0, l = plugins.length; i < l; i++) { + client[this.plugins[i].path] = new plugins[i].klass(client); + } + }; + + PluginManager.register = function (path, klass) { + plugins.push({ path: path, klass: klass }); + }; + + return PluginManager; +})(); + +module.exports = PluginManager; + +},{}],12:[function(require,module,exports){ +"use strict"; + +module.exports = (function () { + var System = + + /** + * @module Hook + * @class Hook.System + * + * @param {Client} client + * @constructor + */ + function System(client) { + this.client = client; + }; + + System.prototype.time = function () { + var promise = this.client.get("system/time"); + if (arguments.length > 0) { + promise.then.apply(promise, arguments); + } + return promise; + }; + + return System; +})(); + +},{}],13:[function(require,module,exports){ +"use strict"; + +/** + * @class Hook.Events + */ +var Events = (function () { + var Events = function Events() { + this._events = {}; + }; + + Events.prototype.on = function (event, callback, context) { + if (!this._events[event]) { + this._events[event] = []; + } + this._events[event].push({ callback: callback, context: context || this }); + }; + + Events.prototype.trigger = function (event, data) { + var c, args = Array.prototype.slice.call(arguments, 1); + if (this._events[event]) { + for (var i = 0, length = this._events[event].length; i < length; i++) { + c = this._events[event][i]; + c.callback.apply(c.context || this.client, args); + } + } + }; + + return Events; +})(); + +module.exports = Events; + +},{}],14:[function(require,module,exports){ +"use strict"; + +/** + * JSON Date Extensions - JSON date parsing extensions + * + * (c) 2014 Rick Strahl, West Wind Technologies + * + * Released under MIT License + * http://en.wikipedia.org/wiki/MIT_License + * + * https://github.com/RickStrahl/json.date-extensions + */ +(function (undefined) { + if (this.JSON && !this.JSON.dateParser) { + var reISO = /^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.{0,1}\d*))(?:Z|(\+|-)([\d|:]*))?$/; + var reMsAjax = /^\/Date\((d|-|.*)\)[\/|\\]$/; + + /// + /// set this if you want MS Ajax Dates parsed + /// before calling any of the other functions + /// + JSON.parseMsAjaxDate = false; + + JSON.useDateParser = function (reset) { + /// + /// Globally enables JSON date parsing for JSON.parse(). + /// Replaces the default JSON.parse() method and adds + /// the datePaser() extension to the processing chain. + /// + /// when set restores the original JSON.parse() function + + // if any parameter is passed reset + if (reset != undefined) { + if (JSON._parseSaved) { + JSON.parse = JSON._parseSaved; + JSON._parseSaved = null; + } + } else { + if (!JSON._parseSaved) { + JSON._parseSaved = JSON.parse; + JSON.parse = JSON.parseWithDate; + } + } + }; + + /// + /// Creates a new filter that processes dates and also delegates to a chain filter optionaly. + /// + /// property name that is parsed + /// returns a new chainning filter for dates + function createDateParser(chainFilter) { + return function (key, value) { + var parsedValue = value; + if (typeof value === "string") { + var a = reISO.exec(value); + if (a) { + parsedValue = new Date(value); + } else if (JSON.parseMsAjaxDate) { + a = reMsAjax.exec(value); + if (a) { + var b = a[1].split(/[-+,.]/); + parsedValue = new Date(b[0] ? +b[0] : 0 - +b[1]); + } + } + } + if (chainFilter !== undefined) return chainFilter(key, parsedValue);else return parsedValue; + }; + } + + /// + /// A filter that can be used with JSON.parse to convert dates. + /// + /// property name that is parsed + /// property value + /// returns date or the original value if not a date string + JSON.dateParser = createDateParser(); + + JSON.parseWithDate = function (json, chainFilter) { + /// + /// Wrapper around the JSON.parse() function that adds a date + /// filtering extension. Returns all dates as real JavaScript dates. + /// + /// JSON to be parsed + /// parsed value or object + var parse = JSON._parseSaved ? JSON._parseSaved : JSON.parse; + try { + var res = parse(json, createDateParser(chainFilter)); + return res; + } catch (e) { + // orignal error thrown has no error message so rethrow with message + throw new Error("JSON content could not be parsed"); + } + }; + + JSON.dateStringToDate = function (dtString, nullDateVal) { + /// + /// Converts a JSON ISO or MSAJAX date or real date a date value. + /// Supports both JSON encoded dates or plain date formatted strings + /// (without the JSON string quotes). + /// If you pass a date the date is returned as is. If you pass null + /// null or the nullDateVal is returned. + /// + /// Date String in ISO or MSAJAX format + /// value to return if date can't be parsed + /// date or the nullDateVal (null by default) + if (!nullDateVal) nullDateVal = null; + + if (!dtString) return nullDateVal; // empty + + if (dtString.getTime) return dtString; // already a date + + if (dtString[0] === "\"" || dtString[0] === "'") + // strip off JSON quotes + dtString = dtString.substr(1, dtString.length - 2); + + var a = reISO.exec(dtString); + if (a) return new Date(dtString); + + if (!JSON.parseMsAjaxDate) return nullDateVal; + + a = reMsAjax.exec(dtString); + if (a) { + var b = a[1].split(/[-,.]/); + return new Date(+b[0]); + } + return nullDateVal; + }; + } +})(); + +},{}]},{},[9])(9) +}); \ No newline at end of file diff --git a/build/hook.min.js b/build/hook.min.js new file mode 100644 index 0000000..adb7c11 --- /dev/null +++ b/build/hook.min.js @@ -0,0 +1,2 @@ +!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var o;"undefined"!=typeof window?o=window:"undefined"!=typeof global?o=global:"undefined"!=typeof self&&(o=self),o.Hook=e()}}(function(){var define,module,exports;return function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o0){var fn=queue.shift();fn()}}},true);return function nextTick(fn){queue.push(fn);window.postMessage("process-tick","*")}}return function nextTick(fn){setTimeout(fn,0)}}();process.title="browser";process.browser=true;process.env={};process.argv=[];function 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i=0;i>>0;toResolve=Math.max(0,Math.min(howMany,len));values=[];toReject=len-toResolve+1;reasons=[];if(!toResolve){resolve(values)}else{rejectOne=function(reason){reasons.push(reason);if(!--toReject){fulfillOne=rejectOne=identity;reject(reasons)}};fulfillOne=function(val){values.push(val);if(!--toResolve){fulfillOne=rejectOne=identity;resolve(values)}};for(i=0;i>>0;results=[];if(!toResolve){resolve(results);return}for(i=0;i>>0;args=arguments;if(args.length<=1){for(;;){if(i in arr){reduced=arr[i++];break}if(++i>=len){throw new TypeError}}}else{reduced=args[1]}for(;i",data.updated_at);var queryString=that.client.getCredentialsParams();var query=that.collection.buildQuery();query.stream={refresh:that.options.refresh_timeout||1,retry:that.options.retry_timeout||1};that.client_id=data.client_id;that.event_source=new EventSource(that.collection.client.url+that.collection.segments+queryString+"&"+JSON.stringify(query),{withCredentials:true});window.addEventListener("unload",function(e){that.disconnect(true)})},function(data){that.readyState=EventSource.CLOSED;that._trigger.apply(that,["state:error",data])})};Channel.prototype.disconnect=function(sync){if(this.isConnected()){this.close();this.publish("disconnected",{_sync:typeof sync!=="undefined"&&sync})}return this};Channel.prototype.close=function(){if(this.event_source){this.event_source.close()}this.readyState=EventSource.CLOSED;return this};return Channel}()},{"event-source-polyfill":2}],7:[function(require,module,exports){"use strict";var Auth=require("./auth");var Collection=require("./collection");var Channel=require("./channel");var KeyValues=require("./key_values");var System=require("./system");var PluginManager=require("./plugin_manager");var uxhr=require("uxhr");var when=require("when");require("./vendor/json.date-extensions");module.exports=function(){var Client=function Client(options){if(!options){options={}}this.endpoint=options.endpoint||options.url||window.location.origin;this.app_id=options.app_id||options.appId||"";this.key=options.key||"";this.options=typeof options.options!=="undefined"?options.options:{};if(this.endpoint.lastIndexOf("/")!=this.endpoint.length-1){this.endpoint+="/"}this.keys=new KeyValues(this);this.auth=new Auth(this);this.system=new System(this);PluginManager.setup(this)};Client.prototype.collection=function(collectionName){return new Collection(this,collectionName)};Client.prototype.channel=function(name,options){if(typeof options==="undefined"){options={}}var collection=this.collection(name);collection.segments=collection.segments.replace("collection/","channels/");if(!options.transport){options.transport="sse"}options.transport=options.transport.toUpperCase();return new Channel(this,collection,options)};Client.prototype.url=function(route,params){var serializedParams="";if(params){serializedParams="&"+this.serialize(params)}return this.endpoint+route+this.getCredentialsParams()+serializedParams};Client.prototype.post=function(segments,data){if(typeof data==="undefined"){data={}}return this.request(segments,"POST",data)};Client.prototype.get=function(segments,data){return this.request(segments,"GET",data)};Client.prototype.put=function(segments,data){return this.request(segments,"PUT",data)};Client.prototype.remove=function(segments,data){return this.request(segments,"DELETE",data)};Client.prototype.request=function(segments,method,data){var payload,request_headers,deferred=when.defer(),synchronous=false;if(data&&data._sync){delete data._sync;synchronous=true}payload=this.getPayload(method,data);request_headers=this.getHeaders();if(!(payload instanceof FormData)){request_headers["Content-Type"]="application/json"}if(method!=="GET"&&method!=="POST"&&this.options.method_override){request_headers["X-HTTP-Method-Override"]=method;method="POST"}if(typeof XDomainRequest!=="undefined"){segments+=this.getCredentialsParams()}deferred.promise.xhr=uxhr(this.endpoint+segments,payload,{method:method,headers:request_headers,sync:synchronous,success:function(response){var data=null;try{data=JSON.parseWithDate(response)}catch(e){}if(data===false||data===null||data.error){if(data&&data.error){console.error(data.error)}deferred.resolver.reject(data)}else{deferred.resolver.resolve(data)}},error:function(response){var data=null;try{data=JSON.parseWithDate(response)}catch(e){}console.log("Error: ",data||"Invalid JSON response.");deferred.resolver.reject(data)}});return deferred.promise};Client.prototype.getHeaders=function(){var request_headers={"X-App-Id":this.app_id,"X-App-Key":this.key},auth_token;var auth_token=this.auth.getToken();if(auth_token){request_headers["X-Auth-Token"]=auth_token}return request_headers};Client.prototype.getPayload=function(method,data){var payload=null;if(data){if(data instanceof FormData){payload=data}else if(method!=="GET"){var field,value,filename,formdata=new FormData,worth=false;for(field in data){value=data[field];filename=null; +if(typeof value==="undefined"||value===null){continue}else if(typeof value==="boolean"||typeof value==="number"||typeof value==="string"){value=value.toString()}else if(value instanceof HTMLInputElement&&value.files&&value.files.length>0){filename=value.files[0].name;value=value.files[0];worth=true}else if(value instanceof HTMLInputElement){value=value.value}else if(value instanceof HTMLCanvasElement){if(typeof dataURLtoBlob==="undefined"){throw new Error("Please add this dependency in your project: https://github.com/blueimp/JavaScript-Canvas-to-Blob")}value=dataURLtoBlob(value.toDataURL());worth=true;filename="canvas.png"}else if(typeof Blob!=="undefined"&&value instanceof Blob){worth=true;filename="blob."+value.type.match(/\/(.*)/)[1]}if(!(value instanceof Array)){if(typeof value==="string"){formdata.append(field,value)}else{try{formdata.append(field,value,filename||"file")}catch(e){}}}}if(worth){payload=formdata}}payload=payload||JSON.stringify(data,function(key,value){if(this[key]instanceof Date){return Math.round(this[key].getTime()/1e3)}else{return value}});if(payload=="{}"){return null}if(method==="GET"&&typeof payload==="string"){payload=encodeURIComponent(payload)}}return payload};Client.prototype.getCredentialsParams=function(){var params="?X-App-Id="+this.app_id+"&X-App-Key="+this.key;var auth_token=this.auth.getToken();if(auth_token){params+="&X-Auth-Token="+auth_token}return params};Client.prototype.serialize=function(obj,prefix){var str=[];for(var p in obj){if(obj.hasOwnProperty(p)){var k=prefix?prefix+"["+p+"]":p,v=obj[p];str.push(typeof v=="object"?this.serialize(v,k):encodeURIComponent(k)+"="+encodeURIComponent(v))}}return str.join("&")};return Client}()},{"./auth":5,"./channel":6,"./collection":8,"./key_values":10,"./plugin_manager":11,"./system":12,"./vendor/json.date-extensions":14,uxhr:3,when:4}],8:[function(require,module,exports){"use strict";module.exports=function(){var Collection=function Collection(client,name){this.client=client;this.name=this._validateName(name);this.reset();this.segments="collection/"+this.name};Collection.prototype.create=function(data){return this.client.post(this.segments,data)};Collection.prototype.select=function(){this.options.select=arguments;return this};Collection.prototype.get=function(){return this.client.get(this.segments,this.buildQuery())};Collection.prototype.where=function(objects,_operation,_value,_boolean){var field,operation=typeof _value==="undefined"?"=":_operation,value=typeof _value==="undefined"?_operation:_value,boolean=typeof _boolean==="undefined"?"and":_boolean;if(typeof objects==="object"){for(field in objects){if(objects.hasOwnProperty(field)){operation="=";if(objects[field]instanceof Array){operation=objects[field][0];value=objects[field][1]}else{value=objects[field]}this.addWhere(field,operation,value,boolean)}}}else{this.addWhere(objects,operation,value,boolean)}return this};Collection.prototype.orWhere=function(objects,_operation,_value){return this.where(objects,_operation,_value,"or")};Collection.prototype.find=function(_id){var promise=this.client.get(this.segments+"/"+_id,this.buildQuery());if(arguments.length>1){return promise.then.apply(promise,Array.prototype.slice.call(arguments,1))}return promise};Collection.prototype.join=function(){this.options["with"]=arguments;return this};Collection.prototype.distinct=function(){this.options.distinct=true;return this};Collection.prototype.group=function(){this._group=arguments;return this};Collection.prototype.count=function(field){field=typeof field==="undefined"?"*":field;this.options.aggregation={method:"count",field:field};var promise=this.get();if(arguments.length>0){promise.then.apply(promise,arguments)}return promise};Collection.prototype.max=function(field){this.options.aggregation={method:"max",field:field};var promise=this.get();if(arguments.length>1){promise.then.apply(promise,Array.prototype.slice.call(arguments,1))}return promise};Collection.prototype.min=function(field){this.options.aggregation={method:"min",field:field};var promise=this.get();if(arguments.length>1){promise.then.apply(promise,Array.prototype.slice.call(arguments,1))}return promise};Collection.prototype.avg=function(field){this.options.aggregation={method:"avg",field:field};var promise=this.get();if(arguments.length>1){promise.then.apply(promise,Array.prototype.slice.call(arguments,1))}return promise};Collection.prototype.sum=function(field){this.options.aggregation={method:"sum",field:field};var promise=this.get();if(arguments.length>1){promise.then.apply(promise,Array.prototype.slice.call(arguments,1))}return promise};Collection.prototype.first=function(){this.options.first=1;var promise=this.get();promise.then.apply(promise,arguments);return promise};Collection.prototype.firstOrCreate=function(data){this.options.first=1;this.options.data=data;return this.client.post(this.segments,this.buildQuery())};Collection.prototype.each=function(cb){var promise=this.then(function(data){for(var i=0;i0){promise.then.apply(promise,arguments)}return promise};Collection.prototype.decrement=function(field,value){this.options.operation={method:"decrement",field:field,value:value};var promise=this.client.put(this.segments,this.buildQuery());if(arguments.length>0){promise.then.apply(promise,arguments)}return promise};Collection.prototype.updateAll=function(data){this.options.data=data;return this.client.put(this.segments,this.buildQuery())};Collection.prototype.addWhere=function(field,operation,value,boolean){this.wheres.push([field,operation.toLowerCase(),value,boolean]);return this};Collection.prototype._validateName=function(name){var regexp=/^[a-z_\/0-9]+$/;if(!regexp.test(name)){throw new Error("Invalid name: "+name)}return name};Collection.prototype.buildQuery=function(){var query={};if(this._limit!==null){query.limit=this._limit}if(this._offset!==null){query.offset=this._offset}if(this._remember!==null){query.remember=this._remember}if(this.wheres.length>0){query.q=this.wheres}if(this.ordering.length>0){query.s=this.ordering}if(this._group.length>0){query.g=this._group}var f,shortnames={paginate:"p",first:"f",aggregation:"aggr",operation:"op",data:"data","with":"with",select:"select",distinct:"distinct"};for(f in shortnames){if(this.options[f]){query[shortnames[f]]=this.options[f]}}this.reset();return query};return Collection}()},{}],9:[function(require,module,exports){"use strict";var Hook={VERSION:"0.3.0",Events:require("./utils/events"),Client:require("./client"),Plugins:require("./plugin_manager"),defaults:{perPage:50}};if(typeof window.FormData==="undefined"){window.FormData=function(){this.append=function(){}}}if(!window.location.origin){window.location.origin=window.location.protocol+"//"+window.location.hostname+(window.location.port?":"+window.location.port:"")}module.exports=Hook},{"./client":7,"./plugin_manager":11,"./utils/events":13}],10:[function(require,module,exports){"use strict";module.exports=function(){var KeyValues=function KeyValues(client){this.client=client};KeyValues.prototype.get=function(key,callback){var promise=this.client.get("key/"+key);if(callback){promise.then.apply(promise,[callback])}return promise};KeyValues.prototype.set=function(key,value){return this.client.post("key/"+key,{value:value})};return KeyValues}()},{}],11:[function(require,module,exports){"use strict";var plugins=[];var PluginManager=function(){var PluginManager=function PluginManager(){};PluginManager.setup=function(client){for(var i=0,l=plugins.length;i0){promise.then.apply(promise,arguments)}return promise};return System}()},{}],13:[function(require,module,exports){"use strict";var Events=function(){var Events=function Events(){this._events={}};Events.prototype.on=function(event,callback,context){if(!this._events[event]){this._events[event]=[]}this._events[event].push({callback:callback,context:context||this})};Events.prototype.trigger=function(event,data){var c,args=Array.prototype.slice.call(arguments,1);if(this._events[event]){for(var i=0,length=this._events[event].length;i - /// set this if you want MS Ajax Dates parsed - /// before calling any of the other functions - /// - JSON.parseMsAjaxDate = false; - - JSON.useDateParser = function(reset) { - /// - /// Globally enables JSON date parsing for JSON.parse(). - /// Replaces the default JSON.parse() method and adds - /// the datePaser() extension to the processing chain. - /// - /// when set restores the original JSON.parse() function - - // if any parameter is passed reset - if (typeof reset != "undefined") { - if (JSON._parseSaved) { - JSON.parse = JSON._parseSaved; - JSON._parseSaved = null; - } - } else { - if (!JSON.parseSaved) { - JSON._parseSaved = JSON.parse; - JSON.parse = JSON.parseWithDate; - } - } - }; - - /// - /// Creates a new filter that processes dates and also delegates to a chain filter optionaly. - /// - /// property name that is parsed - /// returns a new chainning filter for dates - function createDateParser(chainFilter) { - return function(key, value) { - if (typeof value === 'string') { - var a = reISO.exec(value); - if (a) - return new Date(value); - - if (!JSON.parseMsAjaxDate) - return value; - - a = reMsAjax.exec(value); - if (a) { - var b = a[1].split(/[-+,.]/); - return new Date(b[0] ? +b[0] : 0 - +b[1]); - } - } - if (chainFilter !== undefined) - return chainFilter(key, value); - else - return value; - }; - } - - /// - /// A filter that can be used with JSON.parse to convert dates. - /// - /// property name that is parsed - /// property value - /// returns date or the original value if not a date string - JSON.dateParser = createDateParser(); - - JSON.parseWithDate = function(json, chainFilter) { - /// - /// Wrapper around the JSON.parse() function that adds a date - /// filtering extension. Returns all dates as real JavaScript dates. - /// - /// JSON to be parsed - /// parsed value or object - var parse = JSON._parseSaved ? JSON._parseSaved : JSON.parse; - try { - var res = parse(json, createDateParser(chainFilter)); - return res; - } catch (e) { - // orignal error thrown has no error message so rethrow with message - throw new Error("JSON content could not be parsed"); - } - }; - - JSON.dateStringToDate = function(dtString, nullDateVal) { - /// - /// Converts a JSON ISO or MSAJAX date or real date a date value. - /// Supports both JSON encoded dates or plain date formatted strings - /// (without the JSON string quotes). - /// If you pass a date the date is returned as is. If you pass null - /// null or the nullDateVal is returned. - /// - /// Date String in ISO or MSAJAX format - /// value to return if date can't be parsed - /// date or the nullDateVal (null by default) - if (!nullDateVal) - nullDateVal = null; - - if (!dtString) - return nullDateVal; // empty - - if (dtString.getTime) - return dtString; // already a date - - if (dtString[0] === '"' || dtString[0] === "'") - // strip off JSON quotes - dtString = dtString.substr(1, dtString.length - 2); - - var a = reISO.exec(dtString); - if (a) - return new Date(dtString); - - if (!JSON.parseMsAjaxDate) - return nullDateVal; - - a = reMsAjax.exec(dtString); - if (a) { - var b = a[1].split(/[-,.]/); - return new Date(+b[0]); - } - return nullDateVal; - }; - } -})(); - -/** @license MIT License (c) copyright 2011-2013 original author or authors */ - -/** - * A lightweight CommonJS Promises/A and when() implementation - * when is part of the cujo.js family of libraries (http://cujojs.com/) - * - * Licensed under the MIT License at: - * http://www.opensource.org/licenses/mit-license.php - * - * @author Brian Cavalier - * @author John Hann - * @version 2.8.0 - */ -(function(define) { 'use strict'; -define(function (require) { - - // Public API - - when.promise = promise; // Create a pending promise - when.resolve = resolve; // Create a resolved promise - when.reject = reject; // Create a rejected promise - when.defer = defer; // Create a {promise, resolver} pair - - when.join = join; // Join 2 or more promises - - when.all = all; // Resolve a list of promises - when.map = map; // Array.map() for promises - when.reduce = reduce; // Array.reduce() for promises - when.settle = settle; // Settle a list of promises - - when.any = any; // One-winner race - when.some = some; // Multi-winner race - - when.isPromise = isPromiseLike; // DEPRECATED: use isPromiseLike - when.isPromiseLike = isPromiseLike; // Is something promise-like, aka thenable - - /** - * Register an observer for a promise or immediate value. - * - * @param {*} promiseOrValue - * @param {function?} [onFulfilled] callback to be called when promiseOrValue is - * successfully fulfilled. If promiseOrValue is an immediate value, callback - * will be invoked immediately. - * @param {function?} [onRejected] callback to be called when promiseOrValue is - * rejected. - * @param {function?} [onProgress] callback to be called when progress updates - * are issued for promiseOrValue. - * @returns {Promise} a new {@link Promise} that will complete with the return - * value of callback or errback or the completion value of promiseOrValue if - * callback and/or errback is not supplied. - */ - function when(promiseOrValue, onFulfilled, onRejected, onProgress) { - // Get a trusted promise for the input promiseOrValue, and then - // register promise handlers - return cast(promiseOrValue).then(onFulfilled, onRejected, onProgress); - } - - /** - * Creates a new promise whose fate is determined by resolver. - * @param {function} resolver function(resolve, reject, notify) - * @returns {Promise} promise whose fate is determine by resolver - */ - function promise(resolver) { - return new Promise(resolver, - monitorApi.PromiseStatus && monitorApi.PromiseStatus()); - } - - /** - * Trusted Promise constructor. A Promise created from this constructor is - * a trusted when.js promise. Any other duck-typed promise is considered - * untrusted. - * @constructor - * @returns {Promise} promise whose fate is determine by resolver - * @name Promise - */ - function Promise(resolver, status) { - var self, value, consumers = []; - - self = this; - this._status = status; - this.inspect = inspect; - this._when = _when; - - // Call the provider resolver to seal the promise's fate - try { - resolver(promiseResolve, promiseReject, promiseNotify); - } catch(e) { - promiseReject(e); - } - - /** - * Returns a snapshot of this promise's current status at the instant of call - * @returns {{state:String}} - */ - function inspect() { - return value ? value.inspect() : toPendingState(); - } - - /** - * Private message delivery. Queues and delivers messages to - * the promise's ultimate fulfillment value or rejection reason. - * @private - */ - function _when(resolve, notify, onFulfilled, onRejected, onProgress) { - consumers ? consumers.push(deliver) : enqueue(function() { deliver(value); }); - - function deliver(p) { - p._when(resolve, notify, onFulfilled, onRejected, onProgress); - } - } - - /** - * Transition from pre-resolution state to post-resolution state, notifying - * all listeners of the ultimate fulfillment or rejection - * @param {*} val resolution value - */ - function promiseResolve(val) { - if(!consumers) { - return; - } - - var queue = consumers; - consumers = undef; - - value = coerce(self, val); - enqueue(function () { - if(status) { - updateStatus(value, status); - } - runHandlers(queue, value); - }); - } - - /** - * Reject this promise with the supplied reason, which will be used verbatim. - * @param {*} reason reason for the rejection - */ - function promiseReject(reason) { - promiseResolve(new RejectedPromise(reason)); - } - - /** - * Issue a progress event, notifying all progress listeners - * @param {*} update progress event payload to pass to all listeners - */ - function promiseNotify(update) { - if(consumers) { - var queue = consumers; - enqueue(function () { - runHandlers(queue, new ProgressingPromise(update)); - }); - } - } - } - - promisePrototype = Promise.prototype; - - /** - * Register handlers for this promise. - * @param [onFulfilled] {Function} fulfillment handler - * @param [onRejected] {Function} rejection handler - * @param [onProgress] {Function} progress handler - * @return {Promise} new Promise - */ - promisePrototype.then = function(onFulfilled, onRejected, onProgress) { - var self = this; - - return new Promise(function(resolve, reject, notify) { - self._when(resolve, notify, onFulfilled, onRejected, onProgress); - }, this._status && this._status.observed()); - }; - - /** - * Register a rejection handler. Shortcut for .then(undefined, onRejected) - * @param {function?} onRejected - * @return {Promise} - */ - promisePrototype['catch'] = promisePrototype.otherwise = function(onRejected) { - return this.then(undef, onRejected); - }; - - /** - * Ensures that onFulfilledOrRejected will be called regardless of whether - * this promise is fulfilled or rejected. onFulfilledOrRejected WILL NOT - * receive the promises' value or reason. Any returned value will be disregarded. - * onFulfilledOrRejected may throw or return a rejected promise to signal - * an additional error. - * @param {function} onFulfilledOrRejected handler to be called regardless of - * fulfillment or rejection - * @returns {Promise} - */ - promisePrototype['finally'] = promisePrototype.ensure = function(onFulfilledOrRejected) { - return typeof onFulfilledOrRejected === 'function' - ? this.then(injectHandler, injectHandler)['yield'](this) - : this; - - function injectHandler() { - return resolve(onFulfilledOrRejected()); - } - }; - - /** - * Terminate a promise chain by handling the ultimate fulfillment value or - * rejection reason, and assuming responsibility for all errors. if an - * error propagates out of handleResult or handleFatalError, it will be - * rethrown to the host, resulting in a loud stack track on most platforms - * and a crash on some. - * @param {function?} handleResult - * @param {function?} handleError - * @returns {undefined} - */ - promisePrototype.done = function(handleResult, handleError) { - this.then(handleResult, handleError)['catch'](crash); - }; - - /** - * Shortcut for .then(function() { return value; }) - * @param {*} value - * @return {Promise} a promise that: - * - is fulfilled if value is not a promise, or - * - if value is a promise, will fulfill with its value, or reject - * with its reason. - */ - promisePrototype['yield'] = function(value) { - return this.then(function() { - return value; - }); - }; - - /** - * Runs a side effect when this promise fulfills, without changing the - * fulfillment value. - * @param {function} onFulfilledSideEffect - * @returns {Promise} - */ - promisePrototype.tap = function(onFulfilledSideEffect) { - return this.then(onFulfilledSideEffect)['yield'](this); - }; - - /** - * Assumes that this promise will fulfill with an array, and arranges - * for the onFulfilled to be called with the array as its argument list - * i.e. onFulfilled.apply(undefined, array). - * @param {function} onFulfilled function to receive spread arguments - * @return {Promise} - */ - promisePrototype.spread = function(onFulfilled) { - return this.then(function(array) { - // array may contain promises, so resolve its contents. - return all(array, function(array) { - return onFulfilled.apply(undef, array); - }); - }); - }; - - /** - * Shortcut for .then(onFulfilledOrRejected, onFulfilledOrRejected) - * @deprecated - */ - promisePrototype.always = function(onFulfilledOrRejected, onProgress) { - return this.then(onFulfilledOrRejected, onFulfilledOrRejected, onProgress); - }; - - /** - * Casts x to a trusted promise. If x is already a trusted promise, it is - * returned, otherwise a new trusted Promise which follows x is returned. - * @param {*} x - * @returns {Promise} - */ - function cast(x) { - return x instanceof Promise ? x : resolve(x); - } - - /** - * Returns a resolved promise. The returned promise will be - * - fulfilled with promiseOrValue if it is a value, or - * - if promiseOrValue is a promise - * - fulfilled with promiseOrValue's value after it is fulfilled - * - rejected with promiseOrValue's reason after it is rejected - * In contract to cast(x), this always creates a new Promise - * @param {*} x - * @return {Promise} - */ - function resolve(x) { - return promise(function(resolve) { - resolve(x); - }); - } - - /** - * Returns a rejected promise for the supplied promiseOrValue. The returned - * promise will be rejected with: - * - promiseOrValue, if it is a value, or - * - if promiseOrValue is a promise - * - promiseOrValue's value after it is fulfilled - * - promiseOrValue's reason after it is rejected - * @deprecated The behavior of when.reject in 3.0 will be to reject - * with x VERBATIM - * @param {*} x the rejected value of the returned promise - * @return {Promise} rejected promise - */ - function reject(x) { - return when(x, function(e) { - return new RejectedPromise(e); - }); - } - - /** - * Creates a {promise, resolver} pair, either or both of which - * may be given out safely to consumers. - * The resolver has resolve, reject, and progress. The promise - * has then plus extended promise API. - * - * @return {{ - * promise: Promise, - * resolve: function:Promise, - * reject: function:Promise, - * notify: function:Promise - * resolver: { - * resolve: function:Promise, - * reject: function:Promise, - * notify: function:Promise - * }}} - */ - function defer() { - var deferred, pending, resolved; - - // Optimize object shape - deferred = { - promise: undef, resolve: undef, reject: undef, notify: undef, - resolver: { resolve: undef, reject: undef, notify: undef } - }; - - deferred.promise = pending = promise(makeDeferred); - - return deferred; - - function makeDeferred(resolvePending, rejectPending, notifyPending) { - deferred.resolve = deferred.resolver.resolve = function(value) { - if(resolved) { - return resolve(value); - } - resolved = true; - resolvePending(value); - return pending; - }; - - deferred.reject = deferred.resolver.reject = function(reason) { - if(resolved) { - return resolve(new RejectedPromise(reason)); - } - resolved = true; - rejectPending(reason); - return pending; - }; - - deferred.notify = deferred.resolver.notify = function(update) { - notifyPending(update); - return update; - }; - } - } - - /** - * Run a queue of functions as quickly as possible, passing - * value to each. - */ - function runHandlers(queue, value) { - for (var i = 0; i < queue.length; i++) { - queue[i](value); - } - } - - /** - * Coerces x to a trusted Promise - * @param {*} x thing to coerce - * @returns {*} Guaranteed to return a trusted Promise. If x - * is trusted, returns x, otherwise, returns a new, trusted, already-resolved - * Promise whose resolution value is: - * * the resolution value of x if it's a foreign promise, or - * * x if it's a value - */ - function coerce(self, x) { - if (x === self) { - return new RejectedPromise(new TypeError()); - } - - if (x instanceof Promise) { - return x; - } - - try { - var untrustedThen = x === Object(x) && x.then; - - return typeof untrustedThen === 'function' - ? assimilate(untrustedThen, x) - : new FulfilledPromise(x); - } catch(e) { - return new RejectedPromise(e); - } - } - - /** - * Safely assimilates a foreign thenable by wrapping it in a trusted promise - * @param {function} untrustedThen x's then() method - * @param {object|function} x thenable - * @returns {Promise} - */ - function assimilate(untrustedThen, x) { - return promise(function (resolve, reject) { - enqueue(function() { - try { - fcall(untrustedThen, x, resolve, reject); - } catch(e) { - reject(e); - } - }); - }); - } - - makePromisePrototype = Object.create || - function(o) { - function PromisePrototype() {} - PromisePrototype.prototype = o; - return new PromisePrototype(); - }; - - /** - * Creates a fulfilled, local promise as a proxy for a value - * NOTE: must never be exposed - * @private - * @param {*} value fulfillment value - * @returns {Promise} - */ - function FulfilledPromise(value) { - this.value = value; - } - - FulfilledPromise.prototype = makePromisePrototype(promisePrototype); - - FulfilledPromise.prototype.inspect = function() { - return toFulfilledState(this.value); - }; - - FulfilledPromise.prototype._when = function(resolve, _, onFulfilled) { - try { - resolve(typeof onFulfilled === 'function' ? onFulfilled(this.value) : this.value); - } catch(e) { - resolve(new RejectedPromise(e)); - } - }; - - /** - * Creates a rejected, local promise as a proxy for a value - * NOTE: must never be exposed - * @private - * @param {*} reason rejection reason - * @returns {Promise} - */ - function RejectedPromise(reason) { - this.value = reason; - } - - RejectedPromise.prototype = makePromisePrototype(promisePrototype); - - RejectedPromise.prototype.inspect = function() { - return toRejectedState(this.value); - }; - - RejectedPromise.prototype._when = function(resolve, _, __, onRejected) { - try { - resolve(typeof onRejected === 'function' ? onRejected(this.value) : this); - } catch(e) { - resolve(new RejectedPromise(e)); - } - }; - - /** - * Create a progress promise with the supplied update. - * @private - * @param {*} value progress update value - * @return {Promise} progress promise - */ - function ProgressingPromise(value) { - this.value = value; - } - - ProgressingPromise.prototype = makePromisePrototype(promisePrototype); - - ProgressingPromise.prototype._when = function(_, notify, f, r, u) { - try { - notify(typeof u === 'function' ? u(this.value) : this.value); - } catch(e) { - notify(e); - } - }; - - /** - * Update a PromiseStatus monitor object with the outcome - * of the supplied value promise. - * @param {Promise} value - * @param {PromiseStatus} status - */ - function updateStatus(value, status) { - value.then(statusFulfilled, statusRejected); - - function statusFulfilled() { status.fulfilled(); } - function statusRejected(r) { status.rejected(r); } - } - - /** - * Determines if x is promise-like, i.e. a thenable object - * NOTE: Will return true for *any thenable object*, and isn't truly - * safe, since it may attempt to access the `then` property of x (i.e. - * clever/malicious getters may do weird things) - * @param {*} x anything - * @returns {boolean} true if x is promise-like - */ - function isPromiseLike(x) { - return x && typeof x.then === 'function'; - } - - /** - * Initiates a competitive race, returning a promise that will resolve when - * howMany of the supplied promisesOrValues have resolved, or will reject when - * it becomes impossible for howMany to resolve, for example, when - * (promisesOrValues.length - howMany) + 1 input promises reject. - * - * @param {Array} promisesOrValues array of anything, may contain a mix - * of promises and values - * @param howMany {number} number of promisesOrValues to resolve - * @param {function?} [onFulfilled] DEPRECATED, use returnedPromise.then() - * @param {function?} [onRejected] DEPRECATED, use returnedPromise.then() - * @param {function?} [onProgress] DEPRECATED, use returnedPromise.then() - * @returns {Promise} promise that will resolve to an array of howMany values that - * resolved first, or will reject with an array of - * (promisesOrValues.length - howMany) + 1 rejection reasons. - */ - function some(promisesOrValues, howMany, onFulfilled, onRejected, onProgress) { - - return when(promisesOrValues, function(promisesOrValues) { - - return promise(resolveSome).then(onFulfilled, onRejected, onProgress); - - function resolveSome(resolve, reject, notify) { - var toResolve, toReject, values, reasons, fulfillOne, rejectOne, len, i; - - len = promisesOrValues.length >>> 0; - - toResolve = Math.max(0, Math.min(howMany, len)); - values = []; - - toReject = (len - toResolve) + 1; - reasons = []; - - // No items in the input, resolve immediately - if (!toResolve) { - resolve(values); - - } else { - rejectOne = function(reason) { - reasons.push(reason); - if(!--toReject) { - fulfillOne = rejectOne = identity; - reject(reasons); - } - }; - - fulfillOne = function(val) { - // This orders the values based on promise resolution order - values.push(val); - if (!--toResolve) { - fulfillOne = rejectOne = identity; - resolve(values); - } - }; - - for(i = 0; i < len; ++i) { - if(i in promisesOrValues) { - when(promisesOrValues[i], fulfiller, rejecter, notify); - } - } - } - - function rejecter(reason) { - rejectOne(reason); - } - - function fulfiller(val) { - fulfillOne(val); - } - } - }); - } - - /** - * Initiates a competitive race, returning a promise that will resolve when - * any one of the supplied promisesOrValues has resolved or will reject when - * *all* promisesOrValues have rejected. - * - * @param {Array|Promise} promisesOrValues array of anything, may contain a mix - * of {@link Promise}s and values - * @param {function?} [onFulfilled] DEPRECATED, use returnedPromise.then() - * @param {function?} [onRejected] DEPRECATED, use returnedPromise.then() - * @param {function?} [onProgress] DEPRECATED, use returnedPromise.then() - * @returns {Promise} promise that will resolve to the value that resolved first, or - * will reject with an array of all rejected inputs. - */ - function any(promisesOrValues, onFulfilled, onRejected, onProgress) { - - function unwrapSingleResult(val) { - return onFulfilled ? onFulfilled(val[0]) : val[0]; - } - - return some(promisesOrValues, 1, unwrapSingleResult, onRejected, onProgress); - } - - /** - * Return a promise that will resolve only once all the supplied promisesOrValues - * have resolved. The resolution value of the returned promise will be an array - * containing the resolution values of each of the promisesOrValues. - * @memberOf when - * - * @param {Array|Promise} promisesOrValues array of anything, may contain a mix - * of {@link Promise}s and values - * @param {function?} [onFulfilled] DEPRECATED, use returnedPromise.then() - * @param {function?} [onRejected] DEPRECATED, use returnedPromise.then() - * @param {function?} [onProgress] DEPRECATED, use returnedPromise.then() - * @returns {Promise} - */ - function all(promisesOrValues, onFulfilled, onRejected, onProgress) { - return _map(promisesOrValues, identity).then(onFulfilled, onRejected, onProgress); - } - - /** - * Joins multiple promises into a single returned promise. - * @return {Promise} a promise that will fulfill when *all* the input promises - * have fulfilled, or will reject when *any one* of the input promises rejects. - */ - function join(/* ...promises */) { - return _map(arguments, identity); - } - - /** - * Settles all input promises such that they are guaranteed not to - * be pending once the returned promise fulfills. The returned promise - * will always fulfill, except in the case where `array` is a promise - * that rejects. - * @param {Array|Promise} array or promise for array of promises to settle - * @returns {Promise} promise that always fulfills with an array of - * outcome snapshots for each input promise. - */ - function settle(array) { - return _map(array, toFulfilledState, toRejectedState); - } - - /** - * Promise-aware array map function, similar to `Array.prototype.map()`, - * but input array may contain promises or values. - * @param {Array|Promise} array array of anything, may contain promises and values - * @param {function} mapFunc map function which may return a promise or value - * @returns {Promise} promise that will fulfill with an array of mapped values - * or reject if any input promise rejects. - */ - function map(array, mapFunc) { - return _map(array, mapFunc); - } - - /** - * Internal map that allows a fallback to handle rejections - * @param {Array|Promise} array array of anything, may contain promises and values - * @param {function} mapFunc map function which may return a promise or value - * @param {function?} fallback function to handle rejected promises - * @returns {Promise} promise that will fulfill with an array of mapped values - * or reject if any input promise rejects. - */ - function _map(array, mapFunc, fallback) { - return when(array, function(array) { - - return new Promise(resolveMap); - - function resolveMap(resolve, reject, notify) { - var results, len, toResolve, i; - - // Since we know the resulting length, we can preallocate the results - // array to avoid array expansions. - toResolve = len = array.length >>> 0; - results = []; - - if(!toResolve) { - resolve(results); - return; - } - - // Since mapFunc may be async, get all invocations of it into flight - for(i = 0; i < len; i++) { - if(i in array) { - resolveOne(array[i], i); - } else { - --toResolve; - } - } - - function resolveOne(item, i) { - when(item, mapFunc, fallback).then(function(mapped) { - results[i] = mapped; - - if(!--toResolve) { - resolve(results); - } - }, reject, notify); - } - } - }); - } - - /** - * Traditional reduce function, similar to `Array.prototype.reduce()`, but - * input may contain promises and/or values, and reduceFunc - * may return either a value or a promise, *and* initialValue may - * be a promise for the starting value. - * - * @param {Array|Promise} promise array or promise for an array of anything, - * may contain a mix of promises and values. - * @param {function} reduceFunc reduce function reduce(currentValue, nextValue, index, total), - * where total is the total number of items being reduced, and will be the same - * in each call to reduceFunc. - * @returns {Promise} that will resolve to the final reduced value - */ - function reduce(promise, reduceFunc /*, initialValue */) { - var args = fcall(slice, arguments, 1); - - return when(promise, function(array) { - var total; - - total = array.length; - - // Wrap the supplied reduceFunc with one that handles promises and then - // delegates to the supplied. - args[0] = function (current, val, i) { - return when(current, function (c) { - return when(val, function (value) { - return reduceFunc(c, value, i, total); - }); - }); - }; - - return reduceArray.apply(array, args); - }); - } - - // Snapshot states - - /** - * Creates a fulfilled state snapshot - * @private - * @param {*} x any value - * @returns {{state:'fulfilled',value:*}} - */ - function toFulfilledState(x) { - return { state: 'fulfilled', value: x }; - } - - /** - * Creates a rejected state snapshot - * @private - * @param {*} x any reason - * @returns {{state:'rejected',reason:*}} - */ - function toRejectedState(x) { - return { state: 'rejected', reason: x }; - } - - /** - * Creates a pending state snapshot - * @private - * @returns {{state:'pending'}} - */ - function toPendingState() { - return { state: 'pending' }; - } - - // - // Internals, utilities, etc. - // - - var promisePrototype, makePromisePrototype, reduceArray, slice, fcall, nextTick, handlerQueue, - funcProto, call, arrayProto, monitorApi, - capturedSetTimeout, cjsRequire, MutationObs, undef; - - cjsRequire = require; - - // - // Shared handler queue processing - // - // Credit to Twisol (https://github.com/Twisol) for suggesting - // this type of extensible queue + trampoline approach for - // next-tick conflation. - - handlerQueue = []; - - /** - * Enqueue a task. If the queue is not currently scheduled to be - * drained, schedule it. - * @param {function} task - */ - function enqueue(task) { - if(handlerQueue.push(task) === 1) { - nextTick(drainQueue); - } - } - - /** - * Drain the handler queue entirely, being careful to allow the - * queue to be extended while it is being processed, and to continue - * processing until it is truly empty. - */ - function drainQueue() { - runHandlers(handlerQueue); - handlerQueue = []; - } - - // Allow attaching the monitor to when() if env has no console - monitorApi = typeof console !== 'undefined' ? console : when; - - // Sniff "best" async scheduling option - // Prefer process.nextTick or MutationObserver, then check for - // vertx and finally fall back to setTimeout - /*global process,document,setTimeout,MutationObserver,WebKitMutationObserver*/ - if (typeof process === 'object' && process.nextTick) { - nextTick = process.nextTick; - } else if(MutationObs = - (typeof MutationObserver === 'function' && MutationObserver) || - (typeof WebKitMutationObserver === 'function' && WebKitMutationObserver)) { - nextTick = (function(document, MutationObserver, drainQueue) { - var el = document.createElement('div'); - new MutationObserver(drainQueue).observe(el, { attributes: true }); - - return function() { - el.setAttribute('x', 'x'); - }; - }(document, MutationObs, drainQueue)); - } else { - try { - // vert.x 1.x || 2.x - nextTick = cjsRequire('vertx').runOnLoop || cjsRequire('vertx').runOnContext; - } catch(ignore) { - // capture setTimeout to avoid being caught by fake timers - // used in time based tests - capturedSetTimeout = setTimeout; - nextTick = function(t) { capturedSetTimeout(t, 0); }; - } - } - - // - // Capture/polyfill function and array utils - // - - // Safe function calls - funcProto = Function.prototype; - call = funcProto.call; - fcall = funcProto.bind - ? call.bind(call) - : function(f, context) { - return f.apply(context, slice.call(arguments, 2)); - }; - - // Safe array ops - arrayProto = []; - slice = arrayProto.slice; - - // ES5 reduce implementation if native not available - // See: http://es5.github.com/#x15.4.4.21 as there are many - // specifics and edge cases. ES5 dictates that reduce.length === 1 - // This implementation deviates from ES5 spec in the following ways: - // 1. It does not check if reduceFunc is a Callable - reduceArray = arrayProto.reduce || - function(reduceFunc /*, initialValue */) { - /*jshint maxcomplexity: 7*/ - var arr, args, reduced, len, i; - - i = 0; - arr = Object(this); - len = arr.length >>> 0; - args = arguments; - - // If no initialValue, use first item of array (we know length !== 0 here) - // and adjust i to start at second item - if(args.length <= 1) { - // Skip to the first real element in the array - for(;;) { - if(i in arr) { - reduced = arr[i++]; - break; - } - - // If we reached the end of the array without finding any real - // elements, it's a TypeError - if(++i >= len) { - throw new TypeError(); - } - } - } else { - // If initialValue provided, use it - reduced = args[1]; - } - - // Do the actual reduce - for(;i < len; ++i) { - if(i in arr) { - reduced = reduceFunc(reduced, arr[i], i, arr); - } - } - - return reduced; - }; - - function identity(x) { - return x; - } - - function crash(fatalError) { - if(typeof monitorApi.reportUnhandled === 'function') { - monitorApi.reportUnhandled(); - } else { - enqueue(function() { - throw fatalError; - }); - } - - throw fatalError; - } - - return when; -}); -})(typeof define === 'function' && define.amd ? define : function (factory) { module.exports = factory(require); }); - -(function (root, factory) { - if (typeof exports === 'object') { - module.exports = factory(); - } else if (typeof define === 'function' && define.amd) { - define('uxhr', factory); - } else { - root.uxhr = factory(); - } -}(this, function () { - - "use strict"; - - return function (url, data, options) { - - data = data || ''; - options = options || {}; - - var complete = options.complete || function(){}, - success = options.success || function(){}, - error = options.error || function(){}, - timeout = options.timeout || 0, - ontimeout = options.ontimeout || function(){}, - onprogress = options.onprogress || function(){}, - headers = options.headers || {}, - method = options.method || 'GET', - sync = options.sync || false, - req = (function() { - - if (typeof 'XMLHttpRequest' !== 'undefined') { - - // CORS (IE8-9) - if (url.indexOf('http') === 0 && typeof XDomainRequest !== 'undefined') { - return new XDomainRequest(); - } - - // local, CORS (other browsers) - return new XMLHttpRequest(); - - } else if (typeof 'ActiveXObject' !== 'undefined') { - return new ActiveXObject('Microsoft.XMLHTTP'); - } - - })(); - - if (!req) { - throw new Error ('Browser doesn\'t support XHR'); - } - - // serialize data? - var hasFormData = (typeof(window.FormData) !== 'undefined'); - if (typeof data !== 'string' && (hasFormData && !(data instanceof window.FormData))) { - var serialized = []; - for (var datum in data) { - serialized.push(datum + '=' + data[datum]); - } - data = serialized.join('&'); - } - - // use ? or &, accourding to given url - if (method === 'GET' && data) { - url += (url.indexOf('?') >= 0) ? '&' + data : '?' + data; - } - - // open connection - req.open(method, url, !sync); - - // set timeout - // timeouts cannot be set for synchronous requests made from a document. - if (!sync) { - if ('ontimeout' in req) { - req.timeout = timeout; - req.ontimeout = ontimeout; - } - } - - // set onprogress - if ('onprogress' in req) { - req.onprogress = onprogress; - } - - // listen for XHR events - req.onload = function () { - complete(req.responseText, req.status); - success(req.responseText); - }; - req.onerror = function () { - complete(req.responseText); - error(req.responseText, req.status); - }; - - if (typeof(req.setRequestHeader)!=="undefined") { - // set headers - for (var header in headers) { - req.setRequestHeader(header, headers[header]); - } - } - - // send it - req.send(method !== 'GET' ? data : null); - return req; - }; - -})); - -/** - * @license - * Lo-Dash 2.4.1 (Custom Build) - * Build: `lodash modern -o ./dist/lodash.js` - * Copyright 2012-2013 The Dojo Foundation - * Based on Underscore.js 1.5.2 - * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors - * Available under MIT 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 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-literals-string-literals - */ - var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g; - - /** Used to match regexp flags from their coerced string values */ - var reFlags = /\w*$/; - - /** Used to detected named functions */ - var reFuncName = /^\s*function[ \n\r\t]+\w/; - - /** Used to match "interpolate" template delimiters */ - var reInterpolate = /<%=([\s\S]+?)%>/g; - - /** Used to match leading whitespace and zeros to be removed */ - var reLeadingSpacesAndZeros = RegExp('^[' + whitespace + ']*0+(?=.$)'); - - /** 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', 'Function', 'Math', 'Number', 'Object', - 'RegExp', 'String', '_', 'attachEvent', 'clearTimeout', 'isFinite', 'isNaN', - 'parseInt', 'setTimeout' - ]; - - /** 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]', - 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 as an internal `_.debounce` options object */ - var debounceOptions = { - 'leading': false, - 'maxWait': 0, - 'trailing': false - }; - - /** Used as the property descriptor for `__bindData__` */ - var descriptor = { - 'configurable': false, - 'enumerable': false, - 'value': null, - 'writable': false - }; - - /** 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, - index = -1, - length = ac.length; - - while (++index < length) { - var value = ac[index], - other = bc[index]; - - if (value !== other) { - if (value > other || typeof value == 'undefined') { - return 1; - } - if (value < other || typeof other == 'undefined') { - return -1; - } - } - } - // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications - // that causes it, under certain circumstances, to return the same value for - // `a` and `b`. See https://github.com/jashkenas/underscore/pull/1247 - // - // This also ensures a stable sort in V8 and other engines. - // See http://code.google.com/p/v8/issues/detail?id=90 - 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() || { - 'array': null, - 'cache': null, - 'criteria': null, - 'false': false, - 'index': 0, - 'null': false, - 'number': null, - 'object': null, - 'push': null, - 'string': null, - 'true': false, - 'undefined': false, - 'value': null - }; - } - - /** - * 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, - 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 objectProto = Object.prototype; - - /** Used to restore the original `_` reference in `noConflict` */ - var oldDash = context._; - - /** Used to resolve the internal [[Class]] of values */ - var toString = objectProto.toString; - - /** Used to detect if a method is native */ - var reNative = RegExp('^' + - String(toString) - .replace(/[.*+?^${}()|[\]\\]/g, '\\$&') - .replace(/toString| for [^\]]+/g, '.*?') + '$' - ); - - /** Native method shortcuts */ - var ceil = Math.ceil, - clearTimeout = context.clearTimeout, - floor = Math.floor, - fnToString = Function.prototype.toString, - getPrototypeOf = isNative(getPrototypeOf = Object.getPrototypeOf) && getPrototypeOf, - hasOwnProperty = objectProto.hasOwnProperty, - push = arrayRef.push, - setTimeout = context.setTimeout, - splice = arrayRef.splice, - unshift = arrayRef.unshift; - - /** Used to set meta data on functions */ - var defineProperty = (function() { - // IE 8 only accepts DOM elements - try { - var o = {}, - func = isNative(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 nativeCreate = isNative(nativeCreate = Object.create) && nativeCreate, - nativeIsArray = isNative(nativeIsArray = Array.isArray) && nativeIsArray, - nativeIsFinite = context.isFinite, - nativeIsNaN = context.isNaN, - nativeKeys = isNative(nativeKeys = Object.keys) && nativeKeys, - nativeMax = Math.max, - nativeMin = Math.min, - nativeParseInt = context.parseInt, - nativeRandom = Math.random; - - /** 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; - - /*--------------------------------------------------------------------------*/ - - /** - * Creates a `lodash` object which wraps the given value to enable intuitive - * 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`, `create`, `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. - * - * Explicit chaining can be enabled by using the `_.chain` method. - * - * @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 = {}; - - /** - * 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 = !isNative(context.WinRTError) && reThis.test(runInContext); - - /** - * Detect if `Function#name` is supported (all but IE). - * - * @memberOf _.support - * @type boolean - */ - support.funcNames = typeof Function.name == 'string'; - - /** - * 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 base implementation of `_.bind` that creates the bound function and - * sets its meta data. - * - * @private - * @param {Array} bindData The bind data array. - * @returns {Function} Returns the new bound function. - */ - function baseBind(bindData) { - var func = bindData[0], - partialArgs = bindData[2], - thisArg = bindData[4]; - - function bound() { - // `Function#bind` spec - // http://es5.github.io/#x15.3.4.5 - if (partialArgs) { - // avoid `arguments` object deoptimizations by using `slice` instead - // of `Array.prototype.slice.call` and not assigning `arguments` to a - // variable as a ternary expression - var args = slice(partialArgs); - push.apply(args, arguments); - } - // mimic the constructor's `return` behavior - // http://es5.github.io/#x13.2.2 - if (this instanceof bound) { - // ensure `new bound` is an instance of `func` - var thisBinding = baseCreate(func.prototype), - result = func.apply(thisBinding, args || arguments); - return isObject(result) ? result : thisBinding; - } - return func.apply(thisArg, args || arguments); - } - setBindData(bound, bindData); - return bound; - } - - /** - * The base implementation of `_.clone` without argument juggling or support - * for `thisArg` binding. - * - * @private - * @param {*} value The value to clone. - * @param {boolean} [isDeep=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, isDeep, callback, stackA, stackB) { - if (callback) { - var result = callback(value); - if (typeof result != 'undefined') { - return result; - } - } - // inspect [[Class]] - var isObj = isObject(value); - if (isObj) { - var className = toString.call(value); - if (!cloneableClasses[className]) { - return value; - } - var ctor = ctorByClass[className]; - switch (className) { - case boolClass: - case dateClass: - return new ctor(+value); - - case numberClass: - case stringClass: - return new ctor(value); - - case regexpClass: - result = ctor(value.source, reFlags.exec(value)); - result.lastIndex = value.lastIndex; - return result; - } - } else { - return value; - } - var isArr = isArray(value); - if (isDeep) { - // 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]; - } - } - result = isArr ? ctor(value.length) : {}; - } - else { - result = isArr ? slice(value) : assign({}, value); - } - // 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; - } - } - // exit for shallow clone - if (!isDeep) { - return result; - } - // 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 ? forEach : forOwn)(value, function(objValue, key) { - result[key] = baseClone(objValue, isDeep, callback, stackA, stackB); - }); - - if (initedStack) { - releaseArray(stackA); - releaseArray(stackB); - } - return result; - } - - /** - * The base implementation of `_.create` without support for assigning - * properties to the created object. - * - * @private - * @param {Object} prototype The object to inherit from. - * @returns {Object} Returns the new object. - */ - function baseCreate(prototype, properties) { - return isObject(prototype) ? nativeCreate(prototype) : {}; - } - // fallback for browsers without `Object.create` - if (!nativeCreate) { - baseCreate = (function() { - function Object() {} - return function(prototype) { - if (isObject(prototype)) { - Object.prototype = prototype; - var result = new Object; - Object.prototype = null; - } - return result || context.Object(); - }; - }()); - } - - /** - * 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 for no `thisArg` or already bound by `Function#bind` - if (typeof thisArg == 'undefined' || !('prototype' in func)) { - return func; - } - var bindData = func.__bindData__; - if (typeof bindData == 'undefined') { - if (support.funcNames) { - bindData = !func.name; - } - bindData = bindData || !support.funcDecomp; - if (!bindData) { - var source = fnToString.call(func); - if (!support.funcNames) { - bindData = !reFuncName.test(source); - } - if (!bindData) { - // checks if `func` references the `this` keyword and stores the result - bindData = reThis.test(source); - setBindData(func, bindData); - } - } - } - // exit early if there are no `this` references or `func` is bound - if (bindData === false || (bindData !== true && 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 `createWrapper` that creates the wrapper and - * sets its meta data. - * - * @private - * @param {Array} bindData The bind data array. - * @returns {Function} Returns the new function. - */ - function baseCreateWrapper(bindData) { - var func = bindData[0], - bitmask = bindData[1], - partialArgs = bindData[2], - partialRightArgs = bindData[3], - thisArg = bindData[4], - arity = bindData[5]; - - var isBind = bitmask & 1, - isBindKey = bitmask & 2, - isCurry = bitmask & 4, - isCurryBound = bitmask & 8, - key = func; - - function bound() { - var thisBinding = isBind ? thisArg : this; - if (partialArgs) { - var args = slice(partialArgs); - push.apply(args, arguments); - } - if (partialRightArgs || isCurry) { - args || (args = slice(arguments)); - if (partialRightArgs) { - push.apply(args, partialRightArgs); - } - if (isCurry && args.length < arity) { - bitmask |= 16 & ~32; - return baseCreateWrapper([func, (isCurryBound ? bitmask : bitmask & ~3), args, null, thisArg, arity]); - } - } - args || (args = arguments); - if (isBindKey) { - func = thisBinding[key]; - } - if (this instanceof bound) { - thisBinding = baseCreate(func.prototype); - var result = func.apply(thisBinding, args); - return isObject(result) ? result : thisBinding; - } - return func.apply(thisBinding, args); - } - setBindData(bound, bindData); - return bound; - } - - /** - * The base implementation of `_.difference` that accepts a single array - * of values to exclude. - * - * @private - * @param {Array} array The array to process. - * @param {Array} [values] The array of values to exclude. - * @returns {Array} Returns a new array of filtered values. - */ - function baseDifference(array, values) { - var index = -1, - indexOf = getIndexOf(), - length = array ? array.length : 0, - isLarge = length >= largeArraySize && indexOf === baseIndexOf, - result = []; - - if (isLarge) { - var cache = createCache(values); - if (cache) { - indexOf = cacheIndexOf; - values = cache; - } else { - isLarge = false; - } - } - while (++index < length) { - var value = array[index]; - if (indexOf(values, value) < 0) { - result.push(value); - } - } - if (isLarge) { - releaseObject(values); - } - return result; - } - - /** - * 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} [isStrict=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, isStrict, 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, isStrict); - } - var valIndex = -1, - valLength = value.length, - resIndex = result.length; - - result.length += valLength; - while (++valIndex < valLength) { - result[resIndex++] = value[valIndex]; - } - } else if (!isStrict) { - 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 - var aWrapped = hasOwnProperty.call(a, '__wrapped__'), - bWrapped = hasOwnProperty.call(b, '__wrapped__'); - - if (aWrapped || bWrapped) { - return baseIsEqual(aWrapped ? a.__wrapped__ : a, bWrapped ? b.__wrapped__ : b, callback, isWhere, stackA, stackB); - } - // exit for functions and DOM nodes - if (className != objectClass) { - return false; - } - // in older versions of Opera, `arguments` objects have `Array` constructors - var ctorA = a.constructor, - ctorB = 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) && - ('constructor' in a && 'constructor' in b) - ) { - 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) { - // compare lengths to determine if a deep comparison is necessary - length = a.length; - size = b.length; - result = size == length; - - if (result || isWhere) { - // 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; - } - } - } - } - else { - // 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); - } - }); - } - } - stackA.pop(); - stackB.pop(); - - 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 `_.random` without argument juggling or support - * for returning floating-point numbers. - * - * @private - * @param {number} min The minimum possible value. - * @param {number} max The maximum possible value. - * @returns {number} Returns a random number. - */ - function baseRandom(min, max) { - return min + floor(nativeRandom() * (max - min + 1)); - } - - /** - * 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); - indexOf = cacheIndexOf; - seen = cache; - } - 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); - - var index = -1, - length = collection ? collection.length : 0; - - if (typeof length == 'number') { - while (++index < length) { - var value = collection[index]; - setter(result, value, callback(value, index, collection), collection); - } - } else { - forOwn(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 function. - */ - function createWrapper(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; - - 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 && bindData !== true) { - // clone `bindData` - bindData = slice(bindData); - if (bindData[2]) { - bindData[2] = slice(bindData[2]); - } - if (bindData[3]) { - bindData[3] = slice(bindData[3]); - } - // set `thisBinding` is not previously bound - if (isBind && !(bindData[1] & 1)) { - bindData[4] = thisArg; - } - // set if previously bound but not currently (subsequent curried functions) - if (!isBind && bindData[1] & 1) { - bitmask |= 8; - } - // set curried arity if not yet set - if (isCurry && !(bindData[1] & 4)) { - bindData[5] = arity; - } - // append partial left arguments - if (isPartial) { - push.apply(bindData[2] || (bindData[2] = []), partialArgs); - } - // append partial right arguments - if (isPartialRight) { - unshift.apply(bindData[3] || (bindData[3] = []), partialRightArgs); - } - // merge flags - bindData[1] |= bitmask; - return createWrapper.apply(null, bindData); - } - // fast path for `_.bind` - var creater = (bitmask == 1 || bitmask === 17) ? baseBind : baseCreateWrapper; - return creater([func, bitmask, partialArgs, partialRightArgs, thisArg, arity]); - } - - /** - * 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; - } - - /** - * Checks if `value` is a native function. - * - * @private - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if the `value` is a native function, else `false`. - */ - function isNative(value) { - return typeof value == 'function' && reNative.test(value); - } - - /** - * Sets `this` binding data on a given function. - * - * @private - * @param {Function} func The function to set data on. - * @param {Array} value The data array to set. - */ - var setBindData = !defineProperty ? noop : function(func, value) { - descriptor.value = value; - defineProperty(func, '__bindData__', 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))) { - return 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; - } - - /** - * 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 = function(object) { - var index, iterable = object, result = []; - if (!iterable) return result; - if (!(objectTypes[typeof object])) return result; - for (index in iterable) { - if (hasOwnProperty.call(iterable, index)) { - result.push(index); - } - } - return result - }; - - /** - * 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 []; - } - return nativeKeys(object); - }; - - /** - * 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'); - - /*--------------------------------------------------------------------------*/ - - /** - * 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': 'fred' }, { 'employer': 'slate' }); - * // => { 'name': 'fred', 'employer': 'slate' } - * - * var defaults = _.partialRight(_.assign, function(a, b) { - * return typeof a == 'undefined' ? b : a; - * }); - * - * var object = { 'name': 'barney' }; - * defaults(object, { 'name': 'fred', 'employer': 'slate' }); - * // => { 'name': 'barney', 'employer': 'slate' } - */ - var assign = function(object, source, guard) { - var index, iterable = object, result = iterable; - if (!iterable) return result; - var args = arguments, - argsIndex = 0, - argsLength = typeof guard == 'number' ? 2 : args.length; - if (argsLength > 3 && typeof args[argsLength - 2] == 'function') { - var callback = baseCreateCallback(args[--argsLength - 1], args[argsLength--], 2); - } else if (argsLength > 2 && typeof args[argsLength - 1] == 'function') { - callback = args[--argsLength]; - } - while (++argsIndex < argsLength) { - iterable = args[argsIndex]; - if (iterable && objectTypes[typeof iterable]) { - var ownIndex = -1, - ownProps = objectTypes[typeof iterable] && keys(iterable), - length = ownProps ? ownProps.length : 0; - - while (++ownIndex < length) { - index = ownProps[ownIndex]; - result[index] = callback ? callback(result[index], iterable[index]) : iterable[index]; - } - } - } - return result - }; - - /** - * Creates a clone of `value`. If `isDeep` 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} [isDeep=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 characters = [ - * { 'name': 'barney', 'age': 36 }, - * { 'name': 'fred', 'age': 40 } - * ]; - * - * var shallow = _.clone(characters); - * shallow[0] === characters[0]; - * // => true - * - * var deep = _.clone(characters, true); - * deep[0] === characters[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, isDeep, callback, thisArg) { - // allows working with "Collections" methods without using their `index` - // and `collection` arguments for `isDeep` and `callback` - if (typeof isDeep != 'boolean' && isDeep != null) { - thisArg = callback; - callback = isDeep; - isDeep = false; - } - return baseClone(value, isDeep, 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 characters = [ - * { 'name': 'barney', 'age': 36 }, - * { 'name': 'fred', 'age': 40 } - * ]; - * - * var deep = _.cloneDeep(characters); - * deep[0] === characters[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)); - } - - /** - * Creates an object that inherits from the given `prototype` object. If a - * `properties` object is provided its own enumerable properties are assigned - * to the created object. - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} prototype The object to inherit from. - * @param {Object} [properties] The properties to assign to the object. - * @returns {Object} Returns the new object. - * @example - * - * function Shape() { - * this.x = 0; - * this.y = 0; - * } - * - * function Circle() { - * Shape.call(this); - * } - * - * Circle.prototype = _.create(Shape.prototype, { 'constructor': Circle }); - * - * var circle = new Circle; - * circle instanceof Circle; - * // => true - * - * circle instanceof Shape; - * // => true - */ - function create(prototype, properties) { - var result = baseCreate(prototype); - return properties ? assign(result, properties) : result; - } - - /** - * 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 object = { 'name': 'barney' }; - * _.defaults(object, { 'name': 'fred', 'employer': 'slate' }); - * // => { 'name': 'barney', 'employer': 'slate' } - */ - var defaults = function(object, source, guard) { - var index, iterable = object, result = iterable; - if (!iterable) return result; - var args = arguments, - argsIndex = 0, - argsLength = typeof guard == 'number' ? 2 : args.length; - while (++argsIndex < argsLength) { - iterable = args[argsIndex]; - if (iterable && objectTypes[typeof iterable]) { - var ownIndex = -1, - ownProps = objectTypes[typeof iterable] && keys(iterable), - length = ownProps ? ownProps.length : 0; - - while (++ownIndex < length) { - index = ownProps[ownIndex]; - if (typeof result[index] == 'undefined') result[index] = iterable[index]; - } - } - } - return result - }; - - /** - * 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. - * - * 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 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 - * - * var characters = { - * 'barney': { 'age': 36, 'blocked': false }, - * 'fred': { 'age': 40, 'blocked': true }, - * 'pebbles': { 'age': 1, 'blocked': false } - * }; - * - * _.findKey(characters, function(chr) { - * return chr.age < 40; - * }); - * // => 'barney' (property order is not guaranteed across environments) - * - * // using "_.where" callback shorthand - * _.findKey(characters, { 'age': 1 }); - * // => 'pebbles' - * - * // using "_.pluck" callback shorthand - * _.findKey(characters, 'blocked'); - * // => 'fred' - */ - 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. - * - * 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 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 - * - * var characters = { - * 'barney': { 'age': 36, 'blocked': true }, - * 'fred': { 'age': 40, 'blocked': false }, - * 'pebbles': { 'age': 1, 'blocked': true } - * }; - * - * _.findLastKey(characters, function(chr) { - * return chr.age < 40; - * }); - * // => returns `pebbles`, assuming `_.findKey` returns `barney` - * - * // using "_.where" callback shorthand - * _.findLastKey(characters, { 'age': 40 }); - * // => 'fred' - * - * // using "_.pluck" callback shorthand - * _.findLastKey(characters, 'blocked'); - * // => 'pebbles' - */ - 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 Shape() { - * this.x = 0; - * this.y = 0; - * } - * - * Shape.prototype.move = function(x, y) { - * this.x += x; - * this.y += y; - * }; - * - * _.forIn(new Shape, function(value, key) { - * console.log(key); - * }); - * // => logs 'x', 'y', and 'move' (property order is not guaranteed across environments) - */ - var forIn = function(collection, callback, thisArg) { - var index, iterable = collection, result = iterable; - if (!iterable) return result; - if (!objectTypes[typeof iterable]) return result; - callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3); - for (index in iterable) { - if (callback(iterable[index], index, collection) === false) return result; - } - return result - }; - - /** - * 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 Shape() { - * this.x = 0; - * this.y = 0; - * } - * - * Shape.prototype.move = function(x, y) { - * this.x += x; - * this.y += y; - * }; - * - * _.forInRight(new Shape, function(value, key) { - * console.log(key); - * }); - * // => logs 'move', 'y', and 'x' assuming `_.forIn ` logs 'x', 'y', and 'move' - */ - 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 = function(collection, callback, thisArg) { - var index, iterable = collection, result = iterable; - if (!iterable) return result; - if (!objectTypes[typeof iterable]) return result; - callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3); - var ownIndex = -1, - ownProps = objectTypes[typeof iterable] && keys(iterable), - length = ownProps ? ownProps.length : 0; - - while (++ownIndex < length) { - index = ownProps[ownIndex]; - if (callback(iterable[index], index, collection) === false) return result; - } - return result - }; - - /** - * 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 property name exists as a direct property of `object`, - * instead of an inherited property. - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The object to inspect. - * @param {string} key The name of the property to check. - * @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, key) { - return object ? hasOwnProperty.call(object, key) : 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': 'fred', 'second': 'barney' }); - * // => { 'fred': 'first', 'barney': '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 || - value && typeof value == 'object' && toString.call(value) == boolClass || false; - } - - /** - * 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 || className == argsClass ) || - (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 object = { 'name': 'fred' }; - * var copy = { 'name': 'fred' }; - * - * object == copy; - * // => false - * - * _.isEqual(object, 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'; - } - - /** - * 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' || - value && typeof value == 'object' && toString.call(value) == numberClass || false; - } - - /** - * 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 Shape() { - * this.x = 0; - * this.y = 0; - * } - * - * _.isPlainObject(new Shape); - * // => false - * - * _.isPlainObject([1, 2, 3]); - * // => false - * - * _.isPlainObject({ 'x': 0, 'y': 0 }); - * // => true - */ - var isPlainObject = !getPrototypeOf ? shimIsPlainObject : function(value) { - if (!(value && toString.call(value) == objectClass)) { - return false; - } - var valueOf = value.valueOf, - objProto = isNative(valueOf) && (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(/fred/); - * // => true - */ - function isRegExp(value) { - return value && typeof value == 'object' && 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('fred'); - * // => true - */ - function isString(value) { - return typeof value == 'string' || - value && typeof value == 'object' && toString.call(value) == stringClass || false; - } - - /** - * 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'; - } - - /** - * Creates an object with the same keys as `object` and values generated by - * running each own enumerable property of `object` through the callback. - * The callback is bound to `thisArg` and invoked with three arguments; - * (value, key, object). - * - * 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 Objects - * @param {Object} object The object 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 object with values of the results of each `callback` execution. - * @example - * - * _.mapValues({ 'a': 1, 'b': 2, 'c': 3} , function(num) { return num * 3; }); - * // => { 'a': 3, 'b': 6, 'c': 9 } - * - * var characters = { - * 'fred': { 'name': 'fred', 'age': 40 }, - * 'pebbles': { 'name': 'pebbles', 'age': 1 } - * }; - * - * // using "_.pluck" callback shorthand - * _.mapValues(characters, 'age'); - * // => { 'fred': 40, 'pebbles': 1 } - */ - function mapValues(object, callback, thisArg) { - var result = {}; - callback = lodash.createCallback(callback, thisArg, 3); - - forOwn(object, function(value, key, object) { - result[key] = callback(value, key, object); - }); - return result; - } - - /** - * 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 = { - * 'characters': [ - * { 'name': 'barney' }, - * { 'name': 'fred' } - * ] - * }; - * - * var ages = { - * 'characters': [ - * { 'age': 36 }, - * { 'age': 40 } - * ] - * }; - * - * _.merge(names, ages); - * // => { 'characters': [{ 'name': 'barney', 'age': 36 }, { 'name': 'fred', 'age': 40 }] } - * - * 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 = slice(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': 'fred', 'age': 40 }, 'age'); - * // => { 'name': 'fred' } - * - * _.omit({ 'name': 'fred', 'age': 40 }, function(value) { - * return typeof value == 'number'; - * }); - * // => { 'name': 'fred' } - */ - function omit(object, callback, thisArg) { - var result = {}; - if (typeof callback != 'function') { - var props = []; - forIn(object, function(value, key) { - props.push(key); - }); - props = baseDifference(props, baseFlatten(arguments, true, false, 1)); - - var index = -1, - length = props.length; - - while (++index < length) { - var key = props[index]; - 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; - } - - /** - * 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({ 'barney': 36, 'fred': 40 }); - * // => [['barney', 36], ['fred', 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': 'fred', '_userid': 'fred1' }, 'name'); - * // => { 'name': 'fred' } - * - * _.pick({ 'name': 'fred', '_userid': 'fred1' }, function(value, key) { - * return key.charAt(0) != '_'; - * }); - * // => { 'name': 'fred' } - */ - 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 own - * enumerable properties 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} object The object 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); - if (accumulator == null) { - if (isArr) { - accumulator = []; - } else { - var ctor = object && object.constructor, - proto = ctor && ctor.prototype; - - accumulator = baseCreate(proto); - } - } - if (callback) { - callback = lodash.createCallback(callback, thisArg, 4); - (isArr ? forEach : 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(['fred', 'barney', 'pebbles'], 0, 2); - * // => ['fred', 'pebbles'] - */ - 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); - - 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': 'fred', 'age': 40 }, 'fred'); - * // => true - * - * _.contains('pebbles', 'eb'); - * // => 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 { - forOwn(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']); - * // => false - * - * var characters = [ - * { 'name': 'barney', 'age': 36 }, - * { 'name': 'fred', 'age': 40 } - * ]; - * - * // using "_.pluck" callback shorthand - * _.every(characters, 'age'); - * // => true - * - * // using "_.where" callback shorthand - * _.every(characters, { 'age': 36 }); - * // => false - */ - function every(collection, callback, thisArg) { - var result = true; - callback = lodash.createCallback(callback, thisArg, 3); - - var index = -1, - length = collection ? collection.length : 0; - - if (typeof length == 'number') { - while (++index < length) { - if (!(result = !!callback(collection[index], index, collection))) { - break; - } - } - } else { - forOwn(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 characters = [ - * { 'name': 'barney', 'age': 36, 'blocked': false }, - * { 'name': 'fred', 'age': 40, 'blocked': true } - * ]; - * - * // using "_.pluck" callback shorthand - * _.filter(characters, 'blocked'); - * // => [{ 'name': 'fred', 'age': 40, 'blocked': true }] - * - * // using "_.where" callback shorthand - * _.filter(characters, { 'age': 36 }); - * // => [{ 'name': 'barney', 'age': 36, 'blocked': false }] - */ - function filter(collection, callback, thisArg) { - var result = []; - callback = lodash.createCallback(callback, thisArg, 3); - - var index = -1, - length = collection ? collection.length : 0; - - if (typeof length == 'number') { - while (++index < length) { - var value = collection[index]; - if (callback(value, index, collection)) { - result.push(value); - } - } - } else { - forOwn(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 - * - * var characters = [ - * { 'name': 'barney', 'age': 36, 'blocked': false }, - * { 'name': 'fred', 'age': 40, 'blocked': true }, - * { 'name': 'pebbles', 'age': 1, 'blocked': false } - * ]; - * - * _.find(characters, function(chr) { - * return chr.age < 40; - * }); - * // => { 'name': 'barney', 'age': 36, 'blocked': false } - * - * // using "_.where" callback shorthand - * _.find(characters, { 'age': 1 }); - * // => { 'name': 'pebbles', 'age': 1, 'blocked': false } - * - * // using "_.pluck" callback shorthand - * _.find(characters, 'blocked'); - * // => { 'name': 'fred', 'age': 40, 'blocked': true } - */ - function find(collection, callback, thisArg) { - callback = lodash.createCallback(callback, thisArg, 3); - - var index = -1, - length = collection ? collection.length : 0; - - if (typeof length == 'number') { - while (++index < length) { - var value = collection[index]; - if (callback(value, index, collection)) { - return value; - } - } - } else { - var result; - forOwn(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`. - * - * Note: As with other "Collections" methods, objects with a `length` property - * are iterated like arrays. To avoid this behavior `_.forIn` or `_.forOwn` - * may be used for object iteration. - * - * @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) { - var index = -1, - length = collection ? collection.length : 0; - - callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3); - if (typeof length == 'number') { - while (++index < length) { - if (callback(collection[index], index, collection) === false) { - break; - } - } - } else { - forOwn(collection, callback); - } - 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 length = collection ? collection.length : 0; - callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3); - if (typeof length == 'number') { - while (length--) { - if (callback(collection[length], length, collection) === false) { - break; - } - } - } else { - var props = keys(collection); - length = props.length; - forOwn(collection, function(value, key, collection) { - key = props ? props[--length] : --length; - return callback(collection[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(characters, 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 = slice(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 characters = [ - * { 'name': 'barney', 'age': 36 }, - * { 'name': 'fred', 'age': 40 } - * ]; - * - * // using "_.pluck" callback shorthand - * _.map(characters, 'name'); - * // => ['barney', 'fred'] - */ - function map(collection, callback, thisArg) { - var index = -1, - length = collection ? collection.length : 0; - - callback = lodash.createCallback(callback, thisArg, 3); - if (typeof length == 'number') { - var result = Array(length); - while (++index < length) { - result[index] = callback(collection[index], index, collection); - } - } else { - result = []; - forOwn(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 characters = [ - * { 'name': 'barney', 'age': 36 }, - * { 'name': 'fred', 'age': 40 } - * ]; - * - * _.max(characters, function(chr) { return chr.age; }); - * // => { 'name': 'fred', 'age': 40 }; - * - * // using "_.pluck" callback shorthand - * _.max(characters, 'age'); - * // => { 'name': 'fred', 'age': 40 }; - */ - function max(collection, callback, thisArg) { - var computed = -Infinity, - result = computed; - - // allows working with functions like `_.map` without using - // their `index` argument as a callback - if (typeof callback != 'function' && thisArg && thisArg[callback] === collection) { - callback = null; - } - if (callback == null && isArray(collection)) { - var index = -1, - length = collection.length; - - while (++index < length) { - var value = collection[index]; - if (value > result) { - result = value; - } - } - } else { - callback = (callback == null && isString(collection)) - ? charAtCallback - : lodash.createCallback(callback, thisArg, 3); - - forEach(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 characters = [ - * { 'name': 'barney', 'age': 36 }, - * { 'name': 'fred', 'age': 40 } - * ]; - * - * _.min(characters, function(chr) { return chr.age; }); - * // => { 'name': 'barney', 'age': 36 }; - * - * // using "_.pluck" callback shorthand - * _.min(characters, 'age'); - * // => { 'name': 'barney', 'age': 36 }; - */ - function min(collection, callback, thisArg) { - var computed = Infinity, - result = computed; - - // allows working with functions like `_.map` without using - // their `index` argument as a callback - if (typeof callback != 'function' && thisArg && thisArg[callback] === collection) { - callback = null; - } - if (callback == null && isArray(collection)) { - var index = -1, - length = collection.length; - - while (++index < length) { - var value = collection[index]; - if (value < result) { - result = value; - } - } - } else { - callback = (callback == null && isString(collection)) - ? charAtCallback - : lodash.createCallback(callback, thisArg, 3); - - forEach(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 name of the property to pluck. - * @returns {Array} Returns a new array of property values. - * @example - * - * var characters = [ - * { 'name': 'barney', 'age': 36 }, - * { 'name': 'fred', 'age': 40 } - * ]; - * - * _.pluck(characters, 'name'); - * // => ['barney', 'fred'] - */ - 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) { - if (!collection) return accumulator; - var noaccum = arguments.length < 3; - callback = lodash.createCallback(callback, thisArg, 4); - - var index = -1, - length = collection.length; - - if (typeof length == 'number') { - if (noaccum) { - accumulator = collection[++index]; - } - while (++index < length) { - accumulator = callback(accumulator, collection[index], index, collection); - } - } else { - forOwn(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 = lodash.createCallback(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 characters = [ - * { 'name': 'barney', 'age': 36, 'blocked': false }, - * { 'name': 'fred', 'age': 40, 'blocked': true } - * ]; - * - * // using "_.pluck" callback shorthand - * _.reject(characters, 'blocked'); - * // => [{ 'name': 'barney', 'age': 36, 'blocked': false }] - * - * // using "_.where" callback shorthand - * _.reject(characters, { 'age': 36 }); - * // => [{ 'name': 'fred', 'age': 40, 'blocked': true }] - */ - 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 `index` arguments as `n`. - * @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) { - if (collection && typeof collection.length != 'number') { - collection = values(collection); - } - if (n == null || guard) { - return collection ? collection[baseRandom(0, collection.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 = baseRandom(0, ++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('pebbles'); - * // => 7 - */ - 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 characters = [ - * { 'name': 'barney', 'age': 36, 'blocked': false }, - * { 'name': 'fred', 'age': 40, 'blocked': true } - * ]; - * - * // using "_.pluck" callback shorthand - * _.some(characters, 'blocked'); - * // => true - * - * // using "_.where" callback shorthand - * _.some(characters, { 'age': 1 }); - * // => false - */ - function some(collection, callback, thisArg) { - var result; - callback = lodash.createCallback(callback, thisArg, 3); - - var index = -1, - length = collection ? collection.length : 0; - - if (typeof length == 'number') { - while (++index < length) { - if ((result = callback(collection[index], index, collection))) { - break; - } - } - } else { - forOwn(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 array of property names is provided for `callback` the collection - * will be sorted by each property value. - * - * 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 {Array|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] - * - * var characters = [ - * { 'name': 'barney', 'age': 36 }, - * { 'name': 'fred', 'age': 40 }, - * { 'name': 'barney', 'age': 26 }, - * { 'name': 'fred', 'age': 30 } - * ]; - * - * // using "_.pluck" callback shorthand - * _.map(_.sortBy(characters, 'age'), _.values); - * // => [['barney', 26], ['fred', 30], ['barney', 36], ['fred', 40]] - * - * // sorting by multiple properties - * _.map(_.sortBy(characters, ['name', 'age']), _.values); - * // = > [['barney', 26], ['barney', 36], ['fred', 30], ['fred', 40]] - */ - function sortBy(collection, callback, thisArg) { - var index = -1, - isArr = isArray(callback), - length = collection ? collection.length : 0, - result = Array(typeof length == 'number' ? length : 0); - - if (!isArr) { - callback = lodash.createCallback(callback, thisArg, 3); - } - forEach(collection, function(value, key, collection) { - var object = result[++index] = getObject(); - if (isArr) { - object.criteria = map(callback, function(key) { return value[key]; }); - } else { - (object.criteria = getArray())[0] = 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; - if (!isArr) { - releaseArray(object.criteria); - } - 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 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} props The object of property values to filter by. - * @returns {Array} Returns a new array of elements that have the given properties. - * @example - * - * var characters = [ - * { 'name': 'barney', 'age': 36, 'pets': ['hoppy'] }, - * { 'name': 'fred', 'age': 40, 'pets': ['baby puss', 'dino'] } - * ]; - * - * _.where(characters, { 'age': 36 }); - * // => [{ 'name': 'barney', 'age': 36, 'pets': ['hoppy'] }] - * - * _.where(characters, { 'pets': ['dino'] }); - * // => [{ 'name': 'fred', 'age': 40, 'pets': ['baby puss', 'dino'] }] - */ - 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} [values] 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) { - return baseDifference(array, baseFlatten(arguments, true, true, 1)); - } - - /** - * 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. - * - * 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 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 - * - * var characters = [ - * { 'name': 'barney', 'age': 36, 'blocked': false }, - * { 'name': 'fred', 'age': 40, 'blocked': true }, - * { 'name': 'pebbles', 'age': 1, 'blocked': false } - * ]; - * - * _.findIndex(characters, function(chr) { - * return chr.age < 20; - * }); - * // => 2 - * - * // using "_.where" callback shorthand - * _.findIndex(characters, { 'age': 36 }); - * // => 0 - * - * // using "_.pluck" callback shorthand - * _.findIndex(characters, 'blocked'); - * // => 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. - * - * 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 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 - * - * var characters = [ - * { 'name': 'barney', 'age': 36, 'blocked': true }, - * { 'name': 'fred', 'age': 40, 'blocked': false }, - * { 'name': 'pebbles', 'age': 1, 'blocked': true } - * ]; - * - * _.findLastIndex(characters, function(chr) { - * return chr.age > 30; - * }); - * // => 1 - * - * // using "_.where" callback shorthand - * _.findLastIndex(characters, { 'age': 36 }); - * // => 0 - * - * // using "_.pluck" callback shorthand - * _.findLastIndex(characters, 'blocked'); - * // => 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 characters = [ - * { 'name': 'barney', 'blocked': true, 'employer': 'slate' }, - * { 'name': 'fred', 'blocked': false, 'employer': 'slate' }, - * { 'name': 'pebbles', 'blocked': true, 'employer': 'na' } - * ]; - * - * // using "_.pluck" callback shorthand - * _.first(characters, 'blocked'); - * // => [{ 'name': 'barney', 'blocked': true, 'employer': 'slate' }] - * - * // using "_.where" callback shorthand - * _.pluck(_.first(characters, { 'employer': 'slate' }), 'name'); - * // => ['barney', 'fred'] - */ - 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 characters = [ - * { 'name': 'barney', 'age': 30, 'pets': ['hoppy'] }, - * { 'name': 'fred', 'age': 40, 'pets': ['baby puss', 'dino'] } - * ]; - * - * // using "_.pluck" callback shorthand - * _.flatten(characters, 'pets'); - * // => ['hoppy', 'baby puss', 'dino'] - */ - function flatten(array, isShallow, callback, thisArg) { - // juggle arguments - if (typeof isShallow != 'boolean' && isShallow != null) { - thisArg = callback; - callback = (typeof isShallow != 'function' && thisArg && thisArg[isShallow] === array) ? null : isShallow; - 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 characters = [ - * { 'name': 'barney', 'blocked': false, 'employer': 'slate' }, - * { 'name': 'fred', 'blocked': true, 'employer': 'slate' }, - * { 'name': 'pebbles', 'blocked': true, 'employer': 'na' } - * ]; - * - * // using "_.pluck" callback shorthand - * _.initial(characters, 'blocked'); - * // => [{ 'name': 'barney', 'blocked': false, 'employer': 'slate' }] - * - * // using "_.where" callback shorthand - * _.pluck(_.initial(characters, { 'employer': 'na' }), 'name'); - * // => ['barney', 'fred'] - */ - 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 shared values. - * @example - * - * _.intersection([1, 2, 3], [5, 2, 1, 4], [2, 1]); - * // => [1, 2] - */ - function intersection() { - var args = [], - argsIndex = -1, - argsLength = arguments.length, - caches = getArray(), - indexOf = getIndexOf(), - trustIndexOf = indexOf === baseIndexOf, - seen = getArray(); - - while (++argsIndex < argsLength) { - var value = arguments[argsIndex]; - if (isArray(value) || isArguments(value)) { - args.push(value); - caches.push(trustIndexOf && value.length >= largeArraySize && - createCache(argsIndex ? args[argsIndex] : seen)); - } - } - var array = args[0], - index = -1, - length = array ? array.length : 0, - result = []; - - 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 characters = [ - * { 'name': 'barney', 'blocked': false, 'employer': 'slate' }, - * { 'name': 'fred', 'blocked': true, 'employer': 'slate' }, - * { 'name': 'pebbles', 'blocked': true, 'employer': 'na' } - * ]; - * - * // using "_.pluck" callback shorthand - * _.pluck(_.last(characters, 'blocked'), 'name'); - * // => ['fred', 'pebbles'] - * - * // using "_.where" callback shorthand - * _.last(characters, { 'employer': 'na' }); - * // => [{ 'name': 'pebbles', 'blocked': true, 'employer': 'na' }] - */ - 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. - * - * 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 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(4); - * // => [0, 1, 2, 3] - * - * _.range(1, 5); - * // => [1, 2, 3, 4] - * - * _.range(0, 20, 5); - * // => [0, 5, 10, 15] - * - * _.range(0, -4, -1); - * // => [0, -1, -2, -3] - * - * _.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 characters = [ - * { 'name': 'barney', 'blocked': true, 'employer': 'slate' }, - * { 'name': 'fred', 'blocked': false, 'employer': 'slate' }, - * { 'name': 'pebbles', 'blocked': true, 'employer': 'na' } - * ]; - * - * // using "_.pluck" callback shorthand - * _.pluck(_.rest(characters, 'blocked'), 'name'); - * // => ['fred', 'pebbles'] - * - * // using "_.where" callback shorthand - * _.rest(characters, { 'employer': 'slate' }); - * // => [{ 'name': 'pebbles', 'blocked': true, 'employer': 'na' }] - */ - 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 combined values. - * @example - * - * _.union([1, 2, 3], [5, 2, 1, 4], [2, 1]); - * // => [1, 2, 3, 5, 4] - */ - function union() { - 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 = (typeof isSorted != 'function' && thisArg && thisArg[isSorted] === array) ? null : isSorted; - 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 baseDifference(array, slice(arguments, 1)); - } - - /** - * Creates an array that is the symmetric difference of the provided arrays. - * See http://en.wikipedia.org/wiki/Symmetric_difference. - * - * @static - * @memberOf _ - * @category Arrays - * @param {...Array} [array] The arrays to inspect. - * @returns {Array} Returns an array of values. - * @example - * - * _.xor([1, 2, 3], [5, 2, 1, 4]); - * // => [3, 5, 4] - * - * _.xor([1, 2, 5], [2, 3, 5], [3, 4, 5]); - * // => [1, 4, 5] - */ - function xor() { - var index = -1, - length = arguments.length; - - while (++index < length) { - var array = arguments[index]; - if (isArray(array) || isArguments(array)) { - var result = result - ? baseUniq(baseDifference(result, array).concat(baseDifference(array, result))) - : array; - } - } - return result || []; - } - - /** - * 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(['fred', 'barney'], [30, 40], [true, false]); - * // => [['fred', 30, true], ['barney', 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(['fred', 'barney'], [30, 40]); - * // => { 'fred': 30, 'barney': 40 } - */ - function zipObject(keys, values) { - var index = -1, - length = keys ? keys.length : 0, - result = {}; - - if (!values && length && !isArray(keys[0])) { - values = []; - } - 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': 'fred' }, 'hi'); - * func(); - * // => 'hi fred' - */ - function bind(func, thisArg) { - return arguments.length > 2 - ? createWrapper(func, 17, slice(arguments, 2), null, thisArg) - : createWrapper(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] = createWrapper(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': 'fred', - * 'greet': function(greeting) { - * return greeting + ' ' + this.name; - * } - * }; - * - * var func = _.bindKey(object, 'greet', 'hi'); - * func(); - * // => 'hi fred' - * - * object.greet = function(greeting) { - * return greeting + 'ya ' + this.name + '!'; - * }; - * - * func(); - * // => 'hiya fred!' - */ - function bindKey(object, key) { - return arguments.length > 2 - ? createWrapper(key, 19, slice(arguments, 2), null, object) - : createWrapper(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 = { - * 'pebbles': 'penelope' - * }; - * - * 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('pebbles'); - * // => 'Hiya Penelope!' - */ - 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]; - }; - } - - /** - * 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 createWrapper(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 - (now() - stamp); - if (remaining <= 0) { - if (maxTimeoutId) { - clearTimeout(maxTimeoutId); - } - var isCalled = trailingCall; - maxTimeoutId = timeoutId = trailingCall = undefined; - if (isCalled) { - lastCalled = now(); - result = func.apply(thisArg, args); - if (!timeoutId && !maxTimeoutId) { - args = thisArg = null; - } - } - } else { - timeoutId = setTimeout(delayed, remaining); - } - }; - - var maxDelayed = function() { - if (timeoutId) { - clearTimeout(timeoutId); - } - maxTimeoutId = timeoutId = trailingCall = undefined; - if (trailing || (maxWait !== wait)) { - lastCalled = now(); - result = func.apply(thisArg, args); - if (!timeoutId && !maxTimeoutId) { - args = thisArg = null; - } - } - }; - - return function() { - args = arguments; - stamp = now(); - thisArg = this; - trailingCall = trailing && (timeoutId || !leading); - - if (maxWait === false) { - var leadingCall = leading && !timeoutId; - } else { - if (!maxTimeoutId && !leading) { - lastCalled = stamp; - } - var remaining = maxWait - (stamp - lastCalled), - isCalled = remaining <= 0; - - if (isCalled) { - if (maxTimeoutId) { - maxTimeoutId = clearTimeout(maxTimeoutId); - } - lastCalled = stamp; - result = func.apply(thisArg, args); - } - else if (!maxTimeoutId) { - maxTimeoutId = setTimeout(maxDelayed, remaining); - } - } - if (isCalled && timeoutId) { - timeoutId = clearTimeout(timeoutId); - } - else if (!timeoutId && wait !== maxWait) { - timeoutId = setTimeout(delayed, wait); - } - if (leadingCall) { - isCalled = true; - result = func.apply(thisArg, args); - } - if (isCalled && !timeoutId && !maxTimeoutId) { - args = thisArg = null; - } - 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(text) { console.log(text); }, 'deferred'); - * // logs 'deferred' after one or more milliseconds - */ - function defer(func) { - if (!isFunction(func)) { - throw new TypeError; - } - var args = slice(arguments, 1); - return setTimeout(function() { func.apply(undefined, args); }, 1); - } - - /** - * 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 - * - * _.delay(function(text) { console.log(text); }, 1000, 'later'); - * // => logs 'later' after one second - */ - function delay(func, wait) { - if (!isFunction(func)) { - throw new TypeError; - } - var args = slice(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); - * }); - * - * fibonacci(9) - * // => 34 - * - * var data = { - * 'fred': { 'name': 'fred', 'age': 40 }, - * 'pebbles': { 'name': 'pebbles', 'age': 1 } - * }; - * - * // modifying the result cache - * var get = _.memoize(function(name) { return data[name]; }, _.identity); - * get('pebbles'); - * // => { 'name': 'pebbles', 'age': 1 } - * - * get.cache.pebbles.name = 'penelope'; - * get('pebbles'); - * // => { 'name': 'penelope', 'age': 1 } - */ - 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('fred'); - * // => 'hi fred' - */ - function partial(func) { - return createWrapper(func, 16, slice(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 createWrapper(func, 32, null, slice(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; - } - debounceOptions.leading = leading; - debounceOptions.maxWait = wait; - debounceOptions.trailing = trailing; - - return debounce(func, wait, debounceOptions); - } - - /** - * 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 p = _.wrap(_.escape, function(func, text) { - * return '

' + func(text) + '

'; - * }); - * - * p('Fred, Wilma, & Pebbles'); - * // => '

Fred, Wilma, & Pebbles

' - */ - function wrap(value, wrapper) { - return createWrapper(wrapper, 16, [value]); - } - - /*--------------------------------------------------------------------------*/ - - /** - * Creates a function that returns `value`. - * - * @static - * @memberOf _ - * @category Utilities - * @param {*} value The value to return from the new function. - * @returns {Function} Returns the new function. - * @example - * - * var object = { 'name': 'fred' }; - * var getter = _.constant(object); - * getter() === object; - * // => true - */ - function constant(value) { - return function() { - return value; - }; - } - - /** - * 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 Utilities - * @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 characters = [ - * { 'name': 'barney', 'age': 36 }, - * { 'name': 'fred', 'age': 40 } - * ]; - * - * // 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(characters, 'age__gt38'); - * // => [{ 'name': 'fred', 'age': 40 }] - */ - 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 property(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; - }; - } - - /** - * 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('Fred, Wilma, & Pebbles'); - * // => 'Fred, Wilma, & Pebbles' - */ - 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 object = { 'name': 'fred' }; - * _.identity(object) === object; - * // => true - */ - function identity(value) { - return value; - } - - /** - * Adds function properties of a source object to the destination object. - * If `object` is a function methods will be added to its prototype as well. - * - * @static - * @memberOf _ - * @category Utilities - * @param {Function|Object} [object=lodash] object The destination object. - * @param {Object} source The object of functions to add. - * @param {Object} [options] The options object. - * @param {boolean} [options.chain=true] Specify whether the functions added are chainable. - * @example - * - * function capitalize(string) { - * return string.charAt(0).toUpperCase() + string.slice(1).toLowerCase(); - * } - * - * _.mixin({ 'capitalize': capitalize }); - * _.capitalize('fred'); - * // => 'Fred' - * - * _('fred').capitalize().value(); - * // => 'Fred' - * - * _.mixin({ 'capitalize': capitalize }, { 'chain': false }); - * _('fred').capitalize(); - * // => 'Fred' - */ - function mixin(object, source, options) { - var chain = true, - methodNames = source && functions(source); - - if (!source || (!options && !methodNames.length)) { - if (options == null) { - options = source; - } - ctor = lodashWrapper; - source = object; - object = lodash; - methodNames = functions(source); - } - if (options === false) { - chain = false; - } else if (isObject(options) && 'chain' in options) { - chain = options.chain; - } - var ctor = object, - isFunc = isFunction(ctor); - - forEach(methodNames, function(methodName) { - var func = object[methodName] = source[methodName]; - if (isFunc) { - ctor.prototype[methodName] = function() { - var chainAll = this.__chain__, - value = this.__wrapped__, - args = [value]; - - push.apply(args, arguments); - var result = func.apply(object, args); - if (chain || chainAll) { - if (value === result && isObject(result)) { - return this; - } - result = new ctor(result); - result.__chain__ = chainAll; - } - return 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; - } - - /** - * A no-operation function. - * - * @static - * @memberOf _ - * @category Utilities - * @example - * - * var object = { 'name': 'fred' }; - * _.noop(object) === undefined; - * // => true - */ - function noop() { - // no operation performed - } - - /** - * Gets the number of milliseconds that have elapsed since the Unix epoch - * (1 January 1970 00:00:00 UTC). - * - * @static - * @memberOf _ - * @category Utilities - * @example - * - * var stamp = _.now(); - * _.defer(function() { console.log(_.now() - stamp); }); - * // => logs the number of milliseconds it took for the deferred function to be called - */ - var now = isNative(now = Date.now) && now || function() { - return new Date().getTime(); - }; - - /** - * 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 < 21 and Opera < 15 follow the ES3 specified implementation of `parseInt` - return nativeParseInt(isString(value) ? value.replace(reLeadingSpacesAndZeros, '') : value, radix || 0); - }; - - /** - * Creates a "_.pluck" style function, which returns the `key` value of a - * given object. - * - * @static - * @memberOf _ - * @category Utilities - * @param {string} key The name of the property to retrieve. - * @returns {Function} Returns the new function. - * @example - * - * var characters = [ - * { 'name': 'fred', 'age': 40 }, - * { 'name': 'barney', 'age': 36 } - * ]; - * - * var getName = _.property('name'); - * - * _.map(characters, getName); - * // => ['barney', 'fred'] - * - * _.sortBy(characters, getName); - * // => [{ 'name': 'barney', 'age': 36 }, { 'name': 'fred', 'age': 40 }] - */ - function property(key) { - return function(object) { - return object[key]; - }; - } - - /** - * 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; - } - if (floating || min % 1 || max % 1) { - var rand = nativeRandom(); - return nativeMin(min + (rand * (max - min + parseFloat('1e-' + ((rand +'').length - 1)))), max); - } - return baseRandom(min, max); - } - - /** - * Resolves the value of property `key` on `object`. If `key` 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} key The name of the property to resolve. - * @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, key) { - if (object) { - var value = object[key]; - return isFunction(value) ? object[key]() : 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': 'fred' }); - * // => 'hello fred' - * - * // using the "escape" delimiter to escape HTML in data property values - * _.template('<%- value %>', { 'value': ' @@ -77,7 +86,6 @@ - @@ -89,6 +97,7 @@ +