http://git-wip-us.apache.org/repos/asf/incubator-weex/blob/71c692ca/pre-build/native-bundle-main.js ---------------------------------------------------------------------- diff --git a/pre-build/native-bundle-main.js b/pre-build/native-bundle-main.js index d7a7088..c737167 100644 --- a/pre-build/native-bundle-main.js +++ b/pre-build/native-bundle-main.js @@ -1,26499 +1,8 @@ -(this.nativeLog || function(s) {console.log(s)})('START JS FRAMEWORK 0.22.2, Build 2017-09-21 15:46.'); -(this.getJSFMVersion = function(){return "0.22.2"});var global = this, process = { env: {} };var setTimeout = global.setTimeout; - -(function (global, factory) { - typeof exports === 'object' && typeof module !== 'undefined' ? factory() : - typeof define === 'function' && define.amd ? define(factory) : - (factory()); -}(this, (function () { 'use strict'; - -/* - * Licensed to the Apache Software Foundation (ASF) under one - * or more contributor license agreements. See the NOTICE file - * distributed with this work for additional information - * regarding copyright ownership. The ASF licenses this file - * to you under the Apache License, Version 2.0 (the - * "License"); you may not use this file except in compliance - * with the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, - * software distributed under the License is distributed on an - * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY - * KIND, either express or implied. See the License for the - * specific language governing permissions and limitations - * under the License. - */ -var config = {}; - -var instanceMap = {}; - -function init$1 (cfg) { - config.Document = cfg.Document; - config.Element = cfg.Element; - config.Comment = cfg.Comment; - config.sendTasks = cfg.sendTasks; -} - -function createInstance (id, code, options, data, serviceObjects) { - if ( options === void 0 ) options = {}; - if ( data === void 0 ) data = {}; - if ( serviceObjects === void 0 ) serviceObjects = {}; - - var document = new config.Document(id, options.bundleUrl); - var callbacks = {}; - var instance = { id: id, data: data, document: document, callbacks: callbacks }; - - var lastCallbackId = 0; - document.addCallback = function (func) { - lastCallbackId++; - callbacks[lastCallbackId] = func; - return lastCallbackId - }; - document.handleCallback = function (funcId, data, ifLast) { - var callback = callbacks[funcId]; - if (ifLast) { - delete callbacks[funcId]; - } - return callback(data) - }; - instanceMap[id] = instance; - - var globalObjects = Object.assign({ - Document: config.Document, - Element: config.Element, - Comment: config.Comment, - sendTasks: function (tasks) { return config.sendTasks(id, tasks, -1); }, - options: options, - document: document - }, serviceObjects); - - var globalKeys = []; - var globalValues = []; - for (var key in globalObjects) { - globalKeys.push(key); - globalValues.push(globalObjects[key]); - } - globalKeys.push(code); - - var result = new (Function.prototype.bind.apply( Function, [ null ].concat( globalKeys) )); - result.apply(void 0, globalValues); - - config.sendTasks(id, [{ module: 'dom', method: 'createFinish', args: [] }], -1); - - return instance -} - -function destroyInstance (id) { - delete instanceMap[id]; -} - -function getRoot (id) { - return instanceMap[id].document.body.toJSON() -} - -function receiveTasks (id, tasks) { - var jsHandlers = { - fireEvent: function (id, ref, type, data, domChanges) { - var ref$1 = instanceMap[id]; - var document = ref$1.document; - var el = document.getRef(ref); - return document.fireEvent(el, type, data, domChanges) - }, - - callback: function (id, funcId, data, ifLast) { - var ref = instanceMap[id]; - var document = ref.document; - return document.handleCallback(funcId, data, ifLast) - } - }; - - var ref = instanceMap[id] || {}; - var document = ref.document; - if (document && Array.isArray(tasks)) { - var results = []; - tasks.forEach(function (task) { - var handler = jsHandlers[task.method]; - var args = [].concat( task.args ); - if (typeof handler === 'function') { - args.unshift(id); - results.push(handler.apply(void 0, args)); - } - }); - return results - } -} - - -var Vanilla = Object.freeze({ - init: init$1, - createInstance: createInstance, - destroyInstance: destroyInstance, - getRoot: getRoot, - receiveTasks: receiveTasks -}); - -var commonjsGlobal = typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {}; - - - -function unwrapExports (x) { - return x && x.__esModule ? x['default'] : x; -} - -function createCommonjsModule(fn, module) { - return module = { exports: {} }, fn(module, module.exports), module.exports; -} - -var factory = createCommonjsModule(function (module) { -'use strict'; - -module.exports = function weexFactory (exports, renderer) { - -/* */ - -// these helpers produces better vm code in JS engines due to their -// explicitness and function inlining -function isUndef (v) { - return v === undefined || v === null -} - -function isDef (v) { - return v !== undefined && v !== null -} - -function isTrue (v) { - return v === true -} - -function isFalse (v) { - return v === false -} - -/** - * Check if value is primitive - */ -function isPrimitive (value) { - return ( - typeof value === 'string' || - typeof value === 'number' || - typeof value === 'boolean' - ) -} - -/** - * Quick object check - this is primarily used to tell - * Objects from primitive values when we know the value - * is a JSON-compliant type. - */ -function isObject (obj) { - return obj !== null && typeof obj === 'object' -} - -var _toString = Object.prototype.toString; - -/** - * Strict object type check. Only returns true - * for plain JavaScript objects. - */ -function isPlainObject (obj) { - return _toString.call(obj) === '[object Object]' -} - -function isRegExp (v) { - return _toString.call(v) === '[object RegExp]' -} - -/** - * Check if val is a valid array index. - */ -function isValidArrayIndex (val) { - var n = parseFloat(val); - return n >= 0 && Math.floor(n) === n && isFinite(val) -} - -/** - * Convert a value to a string that is actually rendered. - */ -function toString (val) { - return val == null - ? '' - : typeof val === 'object' - ? JSON.stringify(val, null, 2) - : String(val) -} - -/** - * Convert a input value to a number for persistence. - * If the conversion fails, return original string. - */ -function toNumber (val) { - var n = parseFloat(val); - return isNaN(n) ? val : n -} - -/** - * Make a map and return a function for checking if a key - * is in that map. - */ -function makeMap ( - str, - expectsLowerCase -) { - var map = Object.create(null); - var list = str.split(','); - for (var i = 0; i < list.length; i++) { - map[list[i]] = true; - } - return expectsLowerCase - ? function (val) { return map[val.toLowerCase()]; } - : function (val) { return map[val]; } -} - -/** - * Check if a tag is a built-in tag. - */ -var isBuiltInTag = makeMap('slot,component', true); - -/** - * Check if a attribute is a reserved attribute. - */ -var isReservedAttribute = makeMap('key,ref,slot,is'); - -/** - * Remove an item from an array - */ -function remove (arr, item) { - if (arr.length) { - var index = arr.indexOf(item); - if (index > -1) { - return arr.splice(index, 1) - } - } -} - -/** - * Check whether the object has the property. - */ -var hasOwnProperty = Object.prototype.hasOwnProperty; -function hasOwn (obj, key) { - return hasOwnProperty.call(obj, key) -} - -/** - * Create a cached version of a pure function. - */ -function cached (fn) { - var cache = Object.create(null); - return (function cachedFn (str) { - var hit = cache[str]; - return hit || (cache[str] = fn(str)) - }) -} - -/** - * Camelize a hyphen-delimited string. - */ -var camelizeRE = /-(\w)/g; -var camelize = cached(function (str) { - return str.replace(camelizeRE, function (_, c) { return c ? c.toUpperCase() : ''; }) -}); - -/** - * Capitalize a string. - */ -var capitalize = cached(function (str) { - return str.charAt(0).toUpperCase() + str.slice(1) -}); - -/** - * Hyphenate a camelCase string. - */ -var hyphenateRE = /\B([A-Z])/g; -var hyphenate = cached(function (str) { - return str.replace(hyphenateRE, '-$1').toLowerCase() -}); - -/** - * Simple bind, faster than native - */ -function bind (fn, ctx) { - function boundFn (a) { - var l = arguments.length; - return l - ? l > 1 - ? fn.apply(ctx, arguments) - : fn.call(ctx, a) - : fn.call(ctx) - } - // record original fn length - boundFn._length = fn.length; - return boundFn -} - -/** - * Convert an Array-like object to a real Array. - */ -function toArray (list, start) { - start = start || 0; - var i = list.length - start; - var ret = new Array(i); - while (i--) { - ret[i] = list[i + start]; - } - return ret -} - -/** - * Mix properties into target object. - */ -function extend (to, _from) { - for (var key in _from) { - to[key] = _from[key]; - } - return to -} - -/** - * Merge an Array of Objects into a single Object. - */ -function toObject (arr) { - var res = {}; - for (var i = 0; i < arr.length; i++) { - if (arr[i]) { - extend(res, arr[i]); - } - } - return res -} - -/** - * Perform no operation. - * Stubbing args to make Flow happy without leaving useless transpiled code - * with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/) - */ -function noop (a, b, c) {} - -/** - * Always return false. - */ -var no = function (a, b, c) { return false; }; - -/** - * Return same value - */ -var identity = function (_) { return _; }; - -/** - * Generate a static keys string from compiler modules. - */ - - -/** - * Check if two values are loosely equal - that is, - * if they are plain objects, do they have the same shape? - */ -function looseEqual (a, b) { - if (a === b) { return true } - var isObjectA = isObject(a); - var isObjectB = isObject(b); - if (isObjectA && isObjectB) { - try { - var isArrayA = Array.isArray(a); - var isArrayB = Array.isArray(b); - if (isArrayA && isArrayB) { - return a.length === b.length && a.every(function (e, i) { - return looseEqual(e, b[i]) - }) - } else if (!isArrayA && !isArrayB) { - var keysA = Object.keys(a); - var keysB = Object.keys(b); - return keysA.length === keysB.length && keysA.every(function (key) { - return looseEqual(a[key], b[key]) - }) - } else { - /* istanbul ignore next */ - return false - } - } catch (e) { - /* istanbul ignore next */ - return false - } - } else if (!isObjectA && !isObjectB) { - return String(a) === String(b) - } else { - return false - } -} - -function looseIndexOf (arr, val) { - for (var i = 0; i < arr.length; i++) { - if (looseEqual(arr[i], val)) { return i } - } - return -1 -} - -/** - * Ensure a function is called only once. - */ -function once (fn) { - var called = false; - return function () { - if (!called) { - called = true; - fn.apply(this, arguments); - } - } -} - -var SSR_ATTR = 'data-server-rendered'; - -var ASSET_TYPES = [ - 'component', - 'directive', - 'filter' -]; - -var LIFECYCLE_HOOKS = [ - 'beforeCreate', - 'created', - 'beforeMount', - 'mounted', - 'beforeUpdate', - 'updated', - 'beforeDestroy', - 'destroyed', - 'activated', - 'deactivated' -]; - -/* */ - -var config = ({ - /** - * Option merge strategies (used in core/util/options) - */ - optionMergeStrategies: Object.create(null), - - /** - * Whether to suppress warnings. - */ - silent: false, - - /** - * Show production mode tip message on boot? - */ - productionTip: "development" !== 'production', - - /** - * Whether to enable devtools - */ - devtools: "development" !== 'production', - - /** - * Whether to record perf - */ - performance: false, - - /** - * Error handler for watcher errors - */ - errorHandler: null, - - /** - * Warn handler for watcher warns - */ - warnHandler: null, - - /** - * Ignore certain custom elements - */ - ignoredElements: [], - - /** - * Custom user key aliases for v-on - */ - keyCodes: Object.create(null), - - /** - * Check if a tag is reserved so that it cannot be registered as a - * component. This is platform-dependent and may be overwritten. - */ - isReservedTag: no, - - /** - * Check if an attribute is reserved so that it cannot be used as a component - * prop. This is platform-dependent and may be overwritten. - */ - isReservedAttr: no, - - /** - * Check if a tag is an unknown element. - * Platform-dependent. - */ - isUnknownElement: no, - - /** - * Get the namespace of an element - */ - getTagNamespace: noop, - - /** - * Parse the real tag name for the specific platform. - */ - parsePlatformTagName: identity, - - /** - * Check if an attribute must be bound using property, e.g. value - * Platform-dependent. - */ - mustUseProp: no, - - /** - * Exposed for legacy reasons - */ - _lifecycleHooks: LIFECYCLE_HOOKS -}); - -/* */ - -var emptyObject = Object.freeze({}); - -/** - * Check if a string starts with $ or _ - */ -function isReserved (str) { - var c = (str + '').charCodeAt(0); - return c === 0x24 || c === 0x5F -} - -/** - * Define a property. - */ -function def (obj, key, val, enumerable) { - Object.defineProperty(obj, key, { - value: val, - enumerable: !!enumerable, - writable: true, - configurable: true - }); -} - -/** - * Parse simple path. - */ -var bailRE = /[^\w.$]/; -function parsePath (path) { - if (bailRE.test(path)) { - return - } - var segments = path.split('.'); - return function (obj) { - for (var i = 0; i < segments.length; i++) { - if (!obj) { return } - obj = obj[segments[i]]; - } - return obj - } -} - -/* */ - -var warn = noop; -var tip = noop; -var formatComponentName = (null); // work around flow check - -{ - var hasConsole = typeof console !== 'undefined'; - var classifyRE = /(?:^|[-_])(\w)/g; - var classify = function (str) { return str - .replace(classifyRE, function (c) { return c.toUpperCase(); }) - .replace(/[-_]/g, ''); }; - - warn = function (msg, vm) { - var trace = vm ? generateComponentTrace(vm) : ''; - - if (config.warnHandler) { - config.warnHandler.call(null, msg, vm, trace); - } else if (hasConsole && (!config.silent)) { - console.error(("[Vue warn]: " + msg + trace)); - } - }; - - tip = function (msg, vm) { - if (hasConsole && (!config.silent)) { - console.warn("[Vue tip]: " + msg + ( - vm ? generateComponentTrace(vm) : '' - )); - } - }; - - formatComponentName = function (vm, includeFile) { - if (vm.$root === vm) { - return '<Root>' - } - var name = typeof vm === 'string' - ? vm - : typeof vm === 'function' && vm.options - ? vm.options.name - : vm._isVue - ? vm.$options.name || vm.$options._componentTag - : vm.name; - - var file = vm._isVue && vm.$options.__file; - if (!name && file) { - var match = file.match(/([^/\\]+)\.vue$/); - name = match && match[1]; - } - - return ( - (name ? ("<" + (classify(name)) + ">") : "<Anonymous>") + - (file && includeFile !== false ? (" at " + file) : '') - ) - }; - - var repeat = function (str, n) { - var res = ''; - while (n) { - if (n % 2 === 1) { res += str; } - if (n > 1) { str += str; } - n >>= 1; - } - return res - }; - - var generateComponentTrace = function (vm) { - if (vm._isVue && vm.$parent) { - var tree = []; - var currentRecursiveSequence = 0; - while (vm) { - if (tree.length > 0) { - var last = tree[tree.length - 1]; - if (last.constructor === vm.constructor) { - currentRecursiveSequence++; - vm = vm.$parent; - continue - } else if (currentRecursiveSequence > 0) { - tree[tree.length - 1] = [last, currentRecursiveSequence]; - currentRecursiveSequence = 0; - } - } - tree.push(vm); - vm = vm.$parent; - } - return '\n\nfound in\n\n' + tree - .map(function (vm, i) { return ("" + (i === 0 ? '---> ' : repeat(' ', 5 + i * 2)) + (Array.isArray(vm) - ? ((formatComponentName(vm[0])) + "... (" + (vm[1]) + " recursive calls)") - : formatComponentName(vm))); }) - .join('\n') - } else { - return ("\n\n(found in " + (formatComponentName(vm)) + ")") - } - }; -} - -/* */ - -function handleError (err, vm, info) { - if (config.errorHandler) { - config.errorHandler.call(null, err, vm, info); - } else { - { - warn(("Error in " + info + ": \"" + (err.toString()) + "\""), vm); - } - /* istanbul ignore else */ - if (inBrowser && typeof console !== 'undefined') { - console.error(err); - } else { - throw err - } - } -} - -/* */ -/* globals MutationObserver */ - -// can we use __proto__? -var hasProto = '__proto__' in {}; - -// Browser environment sniffing -var inBrowser = typeof window !== 'undefined'; -var UA = inBrowser && window.navigator.userAgent.toLowerCase(); -var isIE = UA && /msie|trident/.test(UA); -var isIE9 = UA && UA.indexOf('msie 9.0') > 0; -var isEdge = UA && UA.indexOf('edge/') > 0; -var isAndroid = UA && UA.indexOf('android') > 0; -var isIOS = UA && /iphone|ipad|ipod|ios/.test(UA); -var isChrome = UA && /chrome\/\d+/.test(UA) && !isEdge; - -// Firefox has a "watch" function on Object.prototype... -var nativeWatch = ({}).watch; - -var supportsPassive = false; -if (inBrowser) { - try { - var opts = {}; - Object.defineProperty(opts, 'passive', ({ - get: function get () { - /* istanbul ignore next */ - supportsPassive = true; - } - })); // https://github.com/facebook/flow/issues/285 - window.addEventListener('test-passive', null, opts); - } catch (e) {} -} - -// this needs to be lazy-evaled because vue may be required before -// vue-server-renderer can set VUE_ENV -var _isServer; -var isServerRendering = function () { - if (_isServer === undefined) { - /* istanbul ignore if */ - if (!inBrowser && typeof commonjsGlobal !== 'undefined') { - // detect presence of vue-server-renderer and avoid - // Webpack shimming the process - _isServer = commonjsGlobal['process'].env.VUE_ENV === 'server'; - } else { - _isServer = false; - } - } - return _isServer -}; - -// detect devtools -var devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__; - -/* istanbul ignore next */ -function isNative (Ctor) { - return typeof Ctor === 'function' && /native code/.test(Ctor.toString()) -} - -var hasSymbol = - typeof Symbol !== 'undefined' && isNative(Symbol) && - typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys); - -/** - * Defer a task to execute it asynchronously. - */ -var nextTick = (function () { - var callbacks = []; - var pending = false; - var timerFunc; - - function nextTickHandler () { - pending = false; - var copies = callbacks.slice(0); - callbacks.length = 0; - for (var i = 0; i < copies.length; i++) { - copies[i](); - } - } - - // the nextTick behavior leverages the microtask queue, which can be accessed - // via either native Promise.then or MutationObserver. - // MutationObserver has wider support, however it is seriously bugged in - // UIWebView in iOS >= 9.3.3 when triggered in touch event handlers. It - // completely stops working after triggering a few times... so, if native - // Promise is available, we will use it: - /* istanbul ignore if */ - if (typeof Promise !== 'undefined' && isNative(Promise)) { - var p = Promise.resolve(); - var logError = function (err) { console.error(err); }; - timerFunc = function () { - p.then(nextTickHandler).catch(logError); - // in problematic UIWebViews, Promise.then doesn't completely break, but - // it can get stuck in a weird state where callbacks are pushed into the - // microtask queue but the queue isn't being flushed, until the browser - // needs to do some other work, e.g. handle a timer. Therefore we can - // "force" the microtask queue to be flushed by adding an empty timer. - if (isIOS) { setTimeout(noop); } - }; - } else if (typeof MutationObserver !== 'undefined' && ( - isNative(MutationObserver) || - // PhantomJS and iOS 7.x - MutationObserver.toString() === '[object MutationObserverConstructor]' - )) { - // use MutationObserver where native Promise is not available, - // e.g. PhantomJS IE11, iOS7, Android 4.4 - var counter = 1; - var observer = new MutationObserver(nextTickHandler); - var textNode = document.createTextNode(String(counter)); - observer.observe(textNode, { - characterData: true - }); - timerFunc = function () { - counter = (counter + 1) % 2; - textNode.data = String(counter); - }; - } else { - // fallback to setTimeout - /* istanbul ignore next */ - timerFunc = function () { - setTimeout(nextTickHandler, 0); - }; - } - - return function queueNextTick (cb, ctx) { - var _resolve; - callbacks.push(function () { - if (cb) { - try { - cb.call(ctx); - } catch (e) { - handleError(e, ctx, 'nextTick'); - } - } else if (_resolve) { - _resolve(ctx); - } - }); - if (!pending) { - pending = true; - timerFunc(); - } - if (!cb && typeof Promise !== 'undefined') { - return new Promise(function (resolve, reject) { - _resolve = resolve; - }) - } - } -})(); - -var _Set; -/* istanbul ignore if */ -if (typeof Set !== 'undefined' && isNative(Set)) { - // use native Set when available. - _Set = Set; -} else { - // a non-standard Set polyfill that only works with primitive keys. - _Set = (function () { - function Set () { - this.set = Object.create(null); - } - Set.prototype.has = function has (key) { - return this.set[key] === true - }; - Set.prototype.add = function add (key) { - this.set[key] = true; - }; - Set.prototype.clear = function clear () { - this.set = Object.create(null); - }; - - return Set; - }()); -} - -/* */ - - -var uid$1 = 0; - -/** - * A dep is an observable that can have multiple - * directives subscribing to it. - */ -var Dep = function Dep () { - this.id = uid$1++; - this.subs = []; -}; - -Dep.prototype.addSub = function addSub (sub) { - this.subs.push(sub); -}; - -Dep.prototype.removeSub = function removeSub (sub) { - remove(this.subs, sub); -}; - -Dep.prototype.depend = function depend () { - if (Dep.target) { - Dep.target.addDep(this); - } -}; - -Dep.prototype.notify = function notify () { - // stabilize the subscriber list first - var subs = this.subs.slice(); - for (var i = 0, l = subs.length; i < l; i++) { - subs[i].update(); - } -}; - -// the current target watcher being evaluated. -// this is globally unique because there could be only one -// watcher being evaluated at any time. -Dep.target = null; -var targetStack = []; - -function pushTarget (_target) { - if (Dep.target) { targetStack.push(Dep.target); } - Dep.target = _target; -} - -function popTarget () { - Dep.target = targetStack.pop(); -} - -/* - * not type checking this file because flow doesn't play well with - * dynamically accessing methods on Array prototype - */ - -var arrayProto = Array.prototype; -var arrayMethods = Object.create(arrayProto);[ - 'push', - 'pop', - 'shift', - 'unshift', - 'splice', - 'sort', - 'reverse' -] -.forEach(function (method) { - // cache original method - var original = arrayProto[method]; - def(arrayMethods, method, function mutator () { - var arguments$1 = arguments; - - var args = [], len = arguments.length; - while ( len-- ) { args[ len ] = arguments$1[ len ]; } - - var result = original.apply(this, args); - var ob = this.__ob__; - var inserted; - switch (method) { - case 'push': - case 'unshift': - inserted = args; - break - case 'splice': - inserted = args.slice(2); - break - } - if (inserted) { ob.observeArray(inserted); } - // notify change - ob.dep.notify(); - return result - }); -}); - -/* */ - -var arrayKeys = Object.getOwnPropertyNames(arrayMethods); - -/** - * By default, when a reactive property is set, the new value is - * also converted to become reactive. However when passing down props, - * we don't want to force conversion because the value may be a nested value - * under a frozen data structure. Converting it would defeat the optimization. - */ -var observerState = { - shouldConvert: true -}; - -/** - * Observer class that are attached to each observed - * object. Once attached, the observer converts target - * object's property keys into getter/setters that - * collect dependencies and dispatches updates. - */ -var Observer = function Observer (value) { - this.value = value; - this.dep = new Dep(); - this.vmCount = 0; - def(value, '__ob__', this); - if (Array.isArray(value)) { - var augment = hasProto - ? protoAugment - : copyAugment; - augment(value, arrayMethods, arrayKeys); - this.observeArray(value); - } else { - this.walk(value); - } -}; - -/** - * Walk through each property and convert them into - * getter/setters. This method should only be called when - * value type is Object. - */ -Observer.prototype.walk = function walk (obj) { - var keys = Object.keys(obj); - for (var i = 0; i < keys.length; i++) { - defineReactive$$1(obj, keys[i], obj[keys[i]]); - } -}; - -/** - * Observe a list of Array items. - */ -Observer.prototype.observeArray = function observeArray (items) { - for (var i = 0, l = items.length; i < l; i++) { - observe(items[i]); - } -}; - -// helpers - -/** - * Augment an target Object or Array by intercepting - * the prototype chain using __proto__ - */ -function protoAugment (target, src, keys) { - /* eslint-disable no-proto */ - target.__proto__ = src; - /* eslint-enable no-proto */ -} - -/** - * Augment an target Object or Array by defining - * hidden properties. - */ -/* istanbul ignore next */ -function copyAugment (target, src, keys) { - for (var i = 0, l = keys.length; i < l; i++) { - var key = keys[i]; - def(target, key, src[key]); - } -} - -/** - * Attempt to create an observer instance for a value, - * returns the new observer if successfully observed, - * or the existing observer if the value already has one. - */ -function observe (value, asRootData) { - if (!isObject(value)) { - return - } - var ob; - if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) { - ob = value.__ob__; - } else if ( - observerState.shouldConvert && - !isServerRendering() && - (Array.isArray(value) || isPlainObject(value)) && - Object.isExtensible(value) && - !value._isVue - ) { - ob = new Observer(value); - } - if (asRootData && ob) { - ob.vmCount++; - } - return ob -} - -/** - * Define a reactive property on an Object. - */ -function defineReactive$$1 ( - obj, - key, - val, - customSetter, - shallow -) { - var dep = new Dep(); - - var property = Object.getOwnPropertyDescriptor(obj, key); - if (property && property.configurable === false) { - return - } - - // cater for pre-defined getter/setters - var getter = property && property.get; - var setter = property && property.set; - - var childOb = !shallow && observe(val); - Object.defineProperty(obj, key, { - enumerable: true, - configurable: true, - get: function reactiveGetter () { - var value = getter ? getter.call(obj) : val; - if (Dep.target) { - dep.depend(); - if (childOb) { - childOb.dep.depend(); - } - if (Array.isArray(value)) { - dependArray(value); - } - } - return value - }, - set: function reactiveSetter (newVal) { - var value = getter ? getter.call(obj) : val; - /* eslint-disable no-self-compare */ - if (newVal === value || (newVal !== newVal && value !== value)) { - return - } - /* eslint-enable no-self-compare */ - if ("development" !== 'production' && customSetter) { - customSetter(); - } - if (setter) { - setter.call(obj, newVal); - } else { - val = newVal; - } - childOb = !shallow && observe(newVal); - dep.notify(); - } - }); -} - -/** - * Set a property on an object. Adds the new property and - * triggers change notification if the property doesn't - * already exist. - */ -function set (target, key, val) { - if (Array.isArray(target) && isValidArrayIndex(key)) { - target.length = Math.max(target.length, key); - target.splice(key, 1, val); - return val - } - if (hasOwn(target, key)) { - target[key] = val; - return val - } - var ob = (target).__ob__; - if (target._isVue || (ob && ob.vmCount)) { - "development" !== 'production' && warn( - 'Avoid adding reactive properties to a Vue instance or its root $data ' + - 'at runtime - declare it upfront in the data option.' - ); - return val - } - if (!ob) { - target[key] = val; - return val - } - defineReactive$$1(ob.value, key, val); - ob.dep.notify(); - return val -} - -/** - * Delete a property and trigger change if necessary. - */ -function del (target, key) { - if (Array.isArray(target) && isValidArrayIndex(key)) { - target.splice(key, 1); - return - } - var ob = (target).__ob__; - if (target._isVue || (ob && ob.vmCount)) { - "development" !== 'production' && warn( - 'Avoid deleting properties on a Vue instance or its root $data ' + - '- just set it to null.' - ); - return - } - if (!hasOwn(target, key)) { - return - } - delete target[key]; - if (!ob) { - return - } - ob.dep.notify(); -} - -/** - * Collect dependencies on array elements when the array is touched, since - * we cannot intercept array element access like property getters. - */ -function dependArray (value) { - for (var e = (void 0), i = 0, l = value.length; i < l; i++) { - e = value[i]; - e && e.__ob__ && e.__ob__.dep.depend(); - if (Array.isArray(e)) { - dependArray(e); - } - } -} - -/* */ - -/** - * Option overwriting strategies are functions that handle - * how to merge a parent option value and a child option - * value into the final value. - */ -var strats = config.optionMergeStrategies; - -/** - * Options with restrictions - */ -{ - strats.el = strats.propsData = function (parent, child, vm, key) { - if (!vm) { - warn( - "option \"" + key + "\" can only be used during instance " + - 'creation with the `new` keyword.' - ); - } - return defaultStrat(parent, child) - }; -} - -/** - * Helper that recursively merges two data objects together. - */ -function mergeData (to, from) { - if (!from) { return to } - var key, toVal, fromVal; - var keys = Object.keys(from); - for (var i = 0; i < keys.length; i++) { - key = keys[i]; - toVal = to[key]; - fromVal = from[key]; - if (!hasOwn(to, key)) { - set(to, key, fromVal); - } else if (isPlainObject(toVal) && isPlainObject(fromVal)) { - mergeData(toVal, fromVal); - } - } - return to -} - -/** - * Data - */ -function mergeDataOrFn ( - parentVal, - childVal, - vm -) { - if (!vm) { - // in a Vue.extend merge, both should be functions - if (!childVal) { - return parentVal - } - if (!parentVal) { - return childVal - } - // when parentVal & childVal are both present, - // we need to return a function that returns the - // merged result of both functions... no need to - // check if parentVal is a function here because - // it has to be a function to pass previous merges. - return function mergedDataFn () { - return mergeData( - typeof childVal === 'function' ? childVal.call(this) : childVal, - typeof parentVal === 'function' ? parentVal.call(this) : parentVal - ) - } - } else if (parentVal || childVal) { - return function mergedInstanceDataFn () { - // instance merge - var instanceData = typeof childVal === 'function' - ? childVal.call(vm) - : childVal; - var defaultData = typeof parentVal === 'function' - ? parentVal.call(vm) - : parentVal; - if (instanceData) { - return mergeData(instanceData, defaultData) - } else { - return defaultData - } - } - } -} - -strats.data = function ( - parentVal, - childVal, - vm -) { - if (!vm) { - if (childVal && typeof childVal !== 'function') { - "development" !== 'production' && warn( - 'The "data" option should be a function ' + - 'that returns a per-instance value in component ' + - 'definitions.', - vm - ); - - return parentVal - } - return mergeDataOrFn.call(this, parentVal, childVal) - } - - return mergeDataOrFn(parentVal, childVal, vm) -}; - -/** - * Hooks and props are merged as arrays. - */ -function mergeHook ( - parentVal, - childVal -) { - return childVal - ? parentVal - ? parentVal.concat(childVal) - : Array.isArray(childVal) - ? childVal - : [childVal] - : parentVal -} - -LIFECYCLE_HOOKS.forEach(function (hook) { - strats[hook] = mergeHook; -}); - -/** - * Assets - * - * When a vm is present (instance creation), we need to do - * a three-way merge between constructor options, instance - * options and parent options. - */ -function mergeAssets (parentVal, childVal) { - var res = Object.create(parentVal || null); - return childVal - ? extend(res, childVal) - : res -} - -ASSET_TYPES.forEach(function (type) { - strats[type + 's'] = mergeAssets; -}); - -/** - * Watchers. - * - * Watchers hashes should not overwrite one - * another, so we merge them as arrays. - */ -strats.watch = function (parentVal, childVal) { - // work around Firefox's Object.prototype.watch... - if (parentVal === nativeWatch) { parentVal = undefined; } - if (childVal === nativeWatch) { childVal = undefined; } - /* istanbul ignore if */ - if (!childVal) { return Object.create(parentVal || null) } - if (!parentVal) { return childVal } - var ret = {}; - extend(ret, parentVal); - for (var key in childVal) { - var parent = ret[key]; - var child = childVal[key]; - if (parent && !Array.isArray(parent)) { - parent = [parent]; - } - ret[key] = parent - ? parent.concat(child) - : Array.isArray(child) ? child : [child]; - } - return ret -}; - -/** - * Other object hashes. - */ -strats.props = -strats.methods = -strats.inject = -strats.computed = function (parentVal, childVal) { - if (!parentVal) { return childVal } - var ret = Object.create(null); - extend(ret, parentVal); - if (childVal) { extend(ret, childVal); } - return ret -}; -strats.provide = mergeDataOrFn; - -/** - * Default strategy. - */ -var defaultStrat = function (parentVal, childVal) { - return childVal === undefined - ? parentVal - : childVal -}; - -/** - * Validate component names - */ -function checkComponents (options) { - for (var key in options.components) { - var lower = key.toLowerCase(); - if (isBuiltInTag(lower) || config.isReservedTag(lower)) { - warn( - 'Do not use built-in or reserved HTML elements as component ' + - 'id: ' + key - ); - } - } -} - -/** - * Ensure all props option syntax are normalized into the - * Object-based format. - */ -function normalizeProps (options) { - var props = options.props; - if (!props) { return } - var res = {}; - var i, val, name; - if (Array.isArray(props)) { - i = props.length; - while (i--) { - val = props[i]; - if (typeof val === 'string') { - name = camelize(val); - res[name] = { type: null }; - } else { - warn('props must be strings when using array syntax.'); - } - } - } else if (isPlainObject(props)) { - for (var key in props) { - val = props[key]; - name = camelize(key); - res[name] = isPlainObject(val) - ? val - : { type: val }; - } - } - options.props = res; -} - -/** - * Normalize all injections into Object-based format - */ -function normalizeInject (options) { - var inject = options.inject; - if (Array.isArray(inject)) { - var normalized = options.inject = {}; - for (var i = 0; i < inject.length; i++) { - normalized[inject[i]] = inject[i]; - } - } -} - -/** - * Normalize raw function directives into object format. - */ -function normalizeDirectives (options) { - var dirs = options.directives; - if (dirs) { - for (var key in dirs) { - var def = dirs[key]; - if (typeof def === 'function') { - dirs[key] = { bind: def, update: def }; - } - } - } -} - -/** - * Merge two option objects into a new one. - * Core utility used in both instantiation and inheritance. - */ -function mergeOptions ( - parent, - child, - vm -) { - { - checkComponents(child); - } - - if (typeof child === 'function') { - child = child.options; - } - - normalizeProps(child); - normalizeInject(child); - normalizeDirectives(child); - var extendsFrom = child.extends; - if (extendsFrom) { - parent = mergeOptions(parent, extendsFrom, vm); - } - if (child.mixins) { - for (var i = 0, l = child.mixins.length; i < l; i++) { - parent = mergeOptions(parent, child.mixins[i], vm); - } - } - var options = {}; - var key; - for (key in parent) { - mergeField(key); - } - for (key in child) { - if (!hasOwn(parent, key)) { - mergeField(key); - } - } - function mergeField (key) { - var strat = strats[key] || defaultStrat; - options[key] = strat(parent[key], child[key], vm, key); - } - return options -} - -/** - * Resolve an asset. - * This function is used because child instances need access - * to assets defined in its ancestor chain. - */ -function resolveAsset ( - options, - type, - id, - warnMissing -) { - /* istanbul ignore if */ - if (typeof id !== 'string') { - return - } - var assets = options[type]; - // check local registration variations first - if (hasOwn(assets, id)) { return assets[id] } - var camelizedId = camelize(id); - if (hasOwn(assets, camelizedId)) { return assets[camelizedId] } - var PascalCaseId = capitalize(camelizedId); - if (hasOwn(assets, PascalCaseId)) { return assets[PascalCaseId] } - // fallback to prototype chain - var res = assets[id] || assets[camelizedId] || assets[PascalCaseId]; - if ("development" !== 'production' && warnMissing && !res) { - warn( - 'Failed to resolve ' + type.slice(0, -1) + ': ' + id, - options - ); - } - return res -} - -/* */ - -function validateProp ( - key, - propOptions, - propsData, - vm -) { - var prop = propOptions[key]; - var absent = !hasOwn(propsData, key); - var value = propsData[key]; - // handle boolean props - if (isType(Boolean, prop.type)) { - if (absent && !hasOwn(prop, 'default')) { - value = false; - } else if (!isType(String, prop.type) && (value === '' || value === hyphenate(key))) { - value = true; - } - } - // check default value - if (value === undefined) { - value = getPropDefaultValue(vm, prop, key); - // since the default value is a fresh copy, - // make sure to observe it. - var prevShouldConvert = observerState.shouldConvert; - observerState.shouldConvert = true; - observe(value); - observerState.shouldConvert = prevShouldConvert; - } - { - assertProp(prop, key, value, vm, absent); - } - return value -} - -/** - * Get the default value of a prop. - */ -function getPropDefaultValue (vm, prop, key) { - // no default, return undefined - if (!hasOwn(prop, 'default')) { - return undefined - } - var def = prop.default; - // warn against non-factory defaults for Object & Array - if ("development" !== 'production' && isObject(def)) { - warn( - 'Invalid default value for prop "' + key + '": ' + - 'Props with type Object/Array must use a factory function ' + - 'to return the default value.', - vm - ); - } - // the raw prop value was also undefined from previous render, - // return previous default value to avoid unnecessary watcher trigger - if (vm && vm.$options.propsData && - vm.$options.propsData[key] === undefined && - vm._props[key] !== undefined - ) { - return vm._props[key] - } - // call factory function for non-Function types - // a value is Function if its prototype is function even across different execution context - return typeof def === 'function' && getType(prop.type) !== 'Function' - ? def.call(vm) - : def -} - -/** - * Assert whether a prop is valid. - */ -function assertProp ( - prop, - name, - value, - vm, - absent -) { - if (prop.required && absent) { - warn( - 'Missing required prop: "' + name + '"', - vm - ); - return - } - if (value == null && !prop.required) { - return - } - var type = prop.type; - var valid = !type || type === true; - var expectedTypes = []; - if (type) { - if (!Array.isArray(type)) { - type = [type]; - } - for (var i = 0; i < type.length && !valid; i++) { - var assertedType = assertType(value, type[i]); - expectedTypes.push(assertedType.expectedType || ''); - valid = assertedType.valid; - } - } - if (!valid) { - warn( - 'Invalid prop: type check failed for prop "' + name + '".' + - ' Expected ' + expectedTypes.map(capitalize).join(', ') + - ', got ' + Object.prototype.toString.call(value).slice(8, -1) + '.', - vm - ); - return - } - var validator = prop.validator; - if (validator) { - if (!validator(value)) { - warn( - 'Invalid prop: custom validator check failed for prop "' + name + '".', - vm - ); - } - } -} - -var simpleCheckRE = /^(String|Number|Boolean|Function|Symbol)$/; - -function assertType (value, type) { - var valid; - var expectedType = getType(type); - if (simpleCheckRE.test(expectedType)) { - var t = typeof value; - valid = t === expectedType.toLowerCase(); - // for primitive wrapper objects - if (!valid && t === 'object') { - valid = value instanceof type; - } - } else if (expectedType === 'Object') { - valid = isPlainObject(value); - } else if (expectedType === 'Array') { - valid = Array.isArray(value); - } else { - valid = value instanceof type; - } - return { - valid: valid, - expectedType: expectedType - } -} - -/** - * Use function string name to check built-in types, - * because a simple equality check will fail when running - * across different vms / iframes. - */ -function getType (fn) { - var match = fn && fn.toString().match(/^\s*function (\w+)/); - return match ? match[1] : '' -} - -function isType (type, fn) { - if (!Array.isArray(fn)) { - return getType(fn) === getType(type) - } - for (var i = 0, len = fn.length; i < len; i++) { - if (getType(fn[i]) === getType(type)) { - return true - } - } - /* istanbul ignore next */ - return false -} - -/* */ - -/* not type checking this file because flow doesn't play well with Proxy */ - -var initProxy; - -{ - var allowedGlobals = makeMap( - 'Infinity,undefined,NaN,isFinite,isNaN,' + - 'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' + - 'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,' + - 'require' // for Webpack/Browserify - ); - - var warnNonPresent = function (target, key) { - warn( - "Property or method \"" + key + "\" is not defined on the instance but " + - "referenced during render. Make sure to declare reactive data " + - "properties in the data option.", - target - ); - }; - - var hasProxy = - typeof Proxy !== 'undefined' && - Proxy.toString().match(/native code/); - - if (hasProxy) { - var isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta'); - config.keyCodes = new Proxy(config.keyCodes, { - set: function set (target, key, value) { - if (isBuiltInModifier(key)) { - warn(("Avoid overwriting built-in modifier in config.keyCodes: ." + key)); - return false - } else { - target[key] = value; - return true - } - } - }); - } - - var hasHandler = { - has: function has (target, key) { - var has = key in target; - var isAllowed = allowedGlobals(key) || key.charAt(0) === '_'; - if (!has && !isAllowed) { - warnNonPresent(target, key); - } - return has || !isAllowed - } - }; - - var getHandler = { - get: function get (target, key) { - if (typeof key === 'string' && !(key in target)) { - warnNonPresent(target, key); - } - return target[key] - } - }; - - initProxy = function initProxy (vm) { - if (hasProxy) { - // determine which proxy handler to use - var options = vm.$options; - var handlers = options.render && options.render._withStripped - ? getHandler - : hasHandler; - vm._renderProxy = new Proxy(vm, handlers); - } else { - vm._renderProxy = vm; - } - }; -} - -var mark; -var measure; - -{ - var perf = inBrowser && window.performance; - /* istanbul ignore if */ - if ( - perf && - perf.mark && - perf.measure && - perf.clearMarks && - perf.clearMeasures - ) { - mark = function (tag) { return perf.mark(tag); }; - measure = function (name, startTag, endTag) { - perf.measure(name, startTag, endTag); - perf.clearMarks(startTag); - perf.clearMarks(endTag); - perf.clearMeasures(name); - }; - } -} - -/* */ - -var VNode = function VNode ( - tag, - data, - children, - text, - elm, - context, - componentOptions, - asyncFactory -) { - this.tag = tag; - this.data = data; - this.children = children; - this.text = text; - this.elm = elm; - this.ns = undefined; - this.context = context; - this.functionalContext = undefined; - this.key = data && data.key; - this.componentOptions = componentOptions; - this.componentInstance = undefined; - this.parent = undefined; - this.raw = false; - this.isStatic = false; - this.isRootInsert = true; - this.isComment = false; - this.isCloned = false; - this.isOnce = false; - this.asyncFactory = asyncFactory; - this.asyncMeta = undefined; - this.isAsyncPlaceholder = false; -}; - -var prototypeAccessors = { child: {} }; - -// DEPRECATED: alias for componentInstance for backwards compat. -/* istanbul ignore next */ -prototypeAccessors.child.get = function () { - return this.componentInstance -}; - -Object.defineProperties( VNode.prototype, prototypeAccessors ); - -var createEmptyVNode = function (text) { - if ( text === void 0 ) { text = ''; } - - var node = new VNode(); - node.text = text; - node.isComment = true; - return node -}; - -function createTextVNode (val) { - return new VNode(undefined, undefined, undefined, String(val)) -} - -// optimized shallow clone -// used for static nodes and slot nodes because they may be reused across -// multiple renders, cloning them avoids errors when DOM manipulations rely -// on their elm reference. -function cloneVNode (vnode, deep) { - var cloned = new VNode( - vnode.tag, - vnode.data, - vnode.children, - vnode.text, - vnode.elm, - vnode.context, - vnode.componentOptions, - vnode.asyncFactory - ); - cloned.ns = vnode.ns; - cloned.isStatic = vnode.isStatic; - cloned.key = vnode.key; - cloned.isComment = vnode.isComment; - cloned.isCloned = true; - if (deep && vnode.children) { - cloned.children = cloneVNodes(vnode.children); - } - return cloned -} - -function cloneVNodes (vnodes, deep) { - var len = vnodes.length; - var res = new Array(len); - for (var i = 0; i < len; i++) { - res[i] = cloneVNode(vnodes[i], deep); - } - return res -} - -/* */ - -var normalizeEvent = cached(function (name) { - var passive = name.charAt(0) === '&'; - name = passive ? name.slice(1) : name; - var once$$1 = name.charAt(0) === '~'; // Prefixed last, checked first - name = once$$1 ? name.slice(1) : name; - var capture = name.charAt(0) === '!'; - name = capture ? name.slice(1) : name; - return { - name: name, - once: once$$1, - capture: capture, - passive: passive - } -}); - -function createFnInvoker (fns) { - function invoker () { - var arguments$1 = arguments; - - var fns = invoker.fns; - if (Array.isArray(fns)) { - var cloned = fns.slice(); - for (var i = 0; i < cloned.length; i++) { - cloned[i].apply(null, arguments$1); - } - } else { - // return handler return value for single handlers - return fns.apply(null, arguments) - } - } - invoker.fns = fns; - return invoker -} - -function updateListeners ( - on, - oldOn, - add, - remove$$1, - vm -) { - var name, def$$1, cur, old, event; - for (name in on) { - def$$1 = cur = on[name]; - old = oldOn[name]; - event = normalizeEvent(name); - if (isPlainObject(def$$1)) { - cur = def$$1.handler; - event.params = def$$1.params; - } - if (isUndef(cur)) { - "development" !== 'production' && warn( - "Invalid handler for event \"" + (event.name) + "\": got " + String(cur), - vm - ); - } else if (isUndef(old)) { - if (isUndef(cur.fns)) { - cur = on[name] = createFnInvoker(cur); - } - add(event.name, cur, event.once, event.capture, event.passive, event.params); - } else if (cur !== old) { - old.fns = cur; - on[name] = old; - } - } - for (name in oldOn) { - if (isUndef(on[name])) { - event = normalizeEvent(name); - remove$$1(event.name, oldOn[name], event.capture); - } - } -} - -/* */ - -function mergeVNodeHook (def, hookKey, hook) { - var invoker; - var oldHook = def[hookKey]; - - function wrappedHook () { - hook.apply(this, arguments); - // important: remove merged hook to ensure it's called only once - // and prevent memory leak - remove(invoker.fns, wrappedHook); - } - - if (isUndef(oldHook)) { - // no existing hook - invoker = createFnInvoker([wrappedHook]); - } else { - /* istanbul ignore if */ - if (isDef(oldHook.fns) && isTrue(oldHook.merged)) { - // already a merged invoker - invoker = oldHook; - invoker.fns.push(wrappedHook); - } else { - // existing plain hook - invoker = createFnInvoker([oldHook, wrappedHook]); - } - } - - invoker.merged = true; - def[hookKey] = invoker; -} - -/* */ - -function extractPropsFromVNodeData ( - data, - Ctor, - tag -) { - // we are only extracting raw values here. - // validation and default values are handled in the child - // component itself. - var propOptions = Ctor.options.props; - if (isUndef(propOptions)) { - return - } - var res = {}; - var attrs = data.attrs; - var props = data.props; - if (isDef(attrs) || isDef(props)) { - for (var key in propOptions) { - var altKey = hyphenate(key); - { - var keyInLowerCase = key.toLowerCase(); - if ( - key !== keyInLowerCase && - attrs && hasOwn(attrs, keyInLowerCase) - ) { - tip( - "Prop \"" + keyInLowerCase + "\" is passed to component " + - (formatComponentName(tag || Ctor)) + ", but the declared prop name is" + - " \"" + key + "\". " + - "Note that HTML attributes are case-insensitive and camelCased " + - "props need to use their kebab-case equivalents when using in-DOM " + - "templates. You should probably use \"" + altKey + "\" instead of \"" + key + "\"." - ); - } - } - checkProp(res, props, key, altKey, true) || - checkProp(res, attrs, key, altKey, false); - } - } - return res -} - -function checkProp ( - res, - hash, - key, - altKey, - preserve -) { - if (isDef(hash)) { - if (hasOwn(hash, key)) { - res[key] = hash[key]; - if (!preserve) { - delete hash[key]; - } - return true - } else if (hasOwn(hash, altKey)) { - res[key] = hash[altKey]; - if (!preserve) { - delete hash[altKey]; - } - return true - } - } - return false -} - -/* */ - -// The template compiler attempts to minimize the need for normalization by -// statically analyzing the template at compile time. -// -// For plain HTML markup, normalization can be completely skipped because the -// generated render function is guaranteed to return Array<VNode>. There are -// two cases where extra normalization is needed: - -// 1. When the children contains components - because a functional component -// may return an Array instead of a single root. In this case, just a simple -// normalization is needed - if any child is an Array, we flatten the whole -// thing with Array.prototype.concat. It is guaranteed to be only 1-level deep -// because functional components already normalize their own children. -function simpleNormalizeChildren (children) { - for (var i = 0; i < children.length; i++) { - if (Array.isArray(children[i])) { - return Array.prototype.concat.apply([], children) - } - } - return children -} - -// 2. When the children contains constructs that always generated nested Arrays, -// e.g. <template>, <slot>, v-for, or when the children is provided by user -// with hand-written render functions / JSX. In such cases a full normalization -// is needed to cater to all possible types of children values. -function normalizeChildren (children) { - return isPrimitive(children) - ? [createTextVNode(children)] - : Array.isArray(children) - ? normalizeArrayChildren(children) - : undefined -} - -function isTextNode (node) { - return isDef(node) && isDef(node.text) && isFalse(node.isComment) -} - -function normalizeArrayChildren (children, nestedIndex) { - var res = []; - var i, c, last; - for (i = 0; i < children.length; i++) { - c = children[i]; - if (isUndef(c) || typeof c === 'boolean') { continue } - last = res[res.length - 1]; - // nested - if (Array.isArray(c)) { - res.push.apply(res, normalizeArrayChildren(c, ((nestedIndex || '') + "_" + i))); - } else if (isPrimitive(c)) { - if (isTextNode(last)) { - // merge adjacent text nodes - // this is necessary for SSR hydration because text nodes are - // essentially merged when rendered to HTML strings - (last).text += String(c); - } else if (c !== '') { - // convert primitive to vnode - res.push(createTextVNode(c)); - } - } else { - if (isTextNode(c) && isTextNode(last)) { - // merge adjacent text nodes - res[res.length - 1] = createTextVNode(last.text + c.text); - } else { - // default key for nested array children (likely generated by v-for) - if (isTrue(children._isVList) && - isDef(c.tag) && - isUndef(c.key) && - isDef(nestedIndex)) { - c.key = "__vlist" + nestedIndex + "_" + i + "__"; - } - res.push(c); - } - } - } - return res -} - -/* */ - -function ensureCtor (comp, base) { - if (comp.__esModule && comp.default) { - comp = comp.default; - } - return isObject(comp) - ? base.extend(comp) - : comp -} - -function createAsyncPlaceholder ( - factory, - data, - context, - children, - tag -) { - var node = createEmptyVNode(); - node.asyncFactory = factory; - node.asyncMeta = { data: data, context: context, children: children, tag: tag }; - return node -} - -function resolveAsyncComponent ( - factory, - baseCtor, - context -) { - if (isTrue(factory.error) && isDef(factory.errorComp)) { - return factory.errorComp - } - - if (isDef(factory.resolved)) { - return factory.resolved - } - - if (isTrue(factory.loading) && isDef(factory.loadingComp)) { - return factory.loadingComp - } - - if (isDef(factory.contexts)) { - // already pending - factory.contexts.push(context); - } else { - var contexts = factory.contexts = [context]; - var sync = true; - - var forceRender = function () { - for (var i = 0, l = contexts.length; i < l; i++) { - contexts[i].$forceUpdate(); - } - }; - - var resolve = once(function (res) { - // cache resolved - factory.resolved = ensureCtor(res, baseCtor); - // invoke callbacks only if this is not a synchronous resolve - // (async resolves are shimmed as synchronous during SSR) - if (!sync) { - forceRender(); - } - }); - - var reject = once(function (reason) { - "development" !== 'production' && warn( - "Failed to resolve async component: " + (String(factory)) + - (reason ? ("\nReason: " + reason) : '') - ); - if (isDef(factory.errorComp)) { - factory.error = true; - forceRender(); - } - }); - - var res = factory(resolve, reject); - - if (isObject(res)) { - if (typeof res.then === 'function') { - // () => Promise - if (isUndef(factory.resolved)) { - res.then(resolve, reject); - } - } else if (isDef(res.component) && typeof res.component.then === 'function') { - res.component.then(resolve, reject); - - if (isDef(res.error)) { - factory.errorComp = ensureCtor(res.error, baseCtor); - } - - if (isDef(res.loading)) { - factory.loadingComp = ensureCtor(res.loading, baseCtor); - if (res.delay === 0) { - factory.loading = true; - } else { - setTimeout(function () { - if (isUndef(factory.resolved) && isUndef(factory.error)) { - factory.loading = true; - forceRender(); - } - }, res.delay || 200); - } - } - - if (isDef(res.timeout)) { - setTimeout(function () { - if (isUndef(factory.resolved)) { - reject( - ("timeout (" + (res.timeout) + "ms)") - ); - } - }, res.timeout); - } - } - } - - sync = false; - // return in case resolved synchronously - return factory.loading - ? factory.loadingComp - : factory.resolved - } -} - -/* */ - -function isAsyncPlaceholder (node) { - return node.isComment && node.asyncFactory -} - -/* */ - -function getFirstComponentChild (children) { - if (Array.isArray(children)) { - for (var i = 0; i < children.length; i++) { - var c = children[i]; - if (isDef(c) && (isDef(c.componentOptions) || isAsyncPlaceholder(c))) { - return c - } - } - } -} - -/* */ - -/* */ - -function initEvents (vm) { - vm._events = Object.create(null); - vm._hasHookEvent = false; - // init parent attached events - var listeners = vm.$options._parentListeners; - if (listeners) { - updateComponentListeners(vm, listeners); - } -} - -var target; - -function add (event, fn, once$$1) { - if (once$$1) { - target.$once(event, fn); - } else { - target.$on(event, fn); - } -} - -function remove$1 (event, fn) { - target.$off(event, fn); -} - -function updateComponentListeners ( - vm, - listeners, - oldListeners -) { - target = vm; - updateListeners(listeners, oldListeners || {}, add, remove$1, vm); -} - -function eventsMixin (Vue) { - var hookRE = /^hook:/; - Vue.prototype.$on = function (event, fn) { - var this$1 = this; - - var vm = this; - if (Array.isArray(event)) { - for (var i = 0, l = event.length; i < l; i++) { - this$1.$on(event[i], fn); - } - } else { - (vm._events[event] || (vm._events[event] = [])).push(fn); - // optimize hook:event cost by using a boolean flag marked at registration - // instead of a hash lookup - if (hookRE.test(event)) { - vm._hasHookEvent = true; - } - } - return vm - }; - - Vue.prototype.$once = function (event, fn) { - var vm = this; - function on () { - vm.$off(event, on); - fn.apply(vm, arguments); - } - on.fn = fn; - vm.$on(event, on); - return vm - }; - - Vue.prototype.$off = function (event, fn) { - var this$1 = this; - - var vm = this; - // all - if (!arguments.length) { - vm._events = Object.create(null); - return vm - } - // array of events - if (Array.isArray(event)) { - for (var i$1 = 0, l = event.length; i$1 < l; i$1++) { - this$1.$off(event[i$1], fn); - } - return vm - } - // specific event - var cbs = vm._events[event]; - if (!cbs) { - return vm - } - if (arguments.length === 1) { - vm._events[event] = null; - return vm - } - // specific handler - var cb; - var i = cbs.length; - while (i--) { - cb = cbs[i]; - if (cb === fn || cb.fn === fn) { - cbs.splice(i, 1); - break - } - } - return vm - }; - - Vue.prototype.$emit = function (event) { - var vm = this; - { - var lowerCaseEvent = event.toLowerCase(); - if (lowerCaseEvent !== event && vm._events[lowerCaseEvent]) { - tip( - "Event \"" + lowerCaseEvent + "\" is emitted in component " + - (formatComponentName(vm)) + " but the handler is registered for \"" + event + "\". " + - "Note that HTML attributes are case-insensitive and you cannot use " + - "v-on to listen to camelCase events when using in-DOM templates. " + - "You should probably use \"" + (hyphenate(event)) + "\" instead of \"" + event + "\"." - ); - } - } - var cbs = vm._events[event]; - if (cbs) { - cbs = cbs.length > 1 ? toArray(cbs) : cbs; - var args = toArray(arguments, 1); - for (var i = 0, l = cbs.length; i < l; i++) { - try { - cbs[i].apply(vm, args); - } catch (e) { - handleError(e, vm, ("event handler for \"" + event + "\"")); - } - } - } - return vm - }; -} - -/* */ - -/** - * Runtime helper for resolving raw children VNodes into a slot object. - */ -function resolveSlots ( - children, - context -) { - var slots = {}; - if (!children) { - return slots - } - var defaultSlot = []; - for (var i = 0, l = children.length; i < l; i++) { - var child = children[i]; - // named slots should only be respected if the vnode was rendered in the - // same context. - if ((child.context === context || child.functionalContext === context) && - child.data && child.data.slot != null - ) { - var name = child.data.slot; - var slot = (slots[name] || (slots[name] = [])); - if (child.tag === 'template') { - slot.push.apply(slot, child.children); - } else { - slot.push(child); - } - } else { - defaultSlot.push(child); - } - } - // ignore whitespace - if (!defaultSlot.every(isWhitespace)) { - slots.default = defaultSlot; - } - return slots -} - -function isWhitespace (node) { - return node.isComment || node.text === ' ' -} - -function resolveScopedSlots ( - fns, // see flow/vnode - res -) { - res = res || {}; - for (var i = 0; i < fns.length; i++) { - if (Array.isArray(fns[i])) { - resolveScopedSlots(fns[i], res); - } else { - res[fns[i].key] = fns[i].fn; - } - } - return res -} - -/* */ - -var activeInstance = null; -var isUpdatingChildComponent = false; - -function initLifecycle (vm) { - var options = vm.$options; - - // locate first non-abstract parent - var parent = options.parent; - if (parent && !options.abstract) { - while (parent.$options.abstract && parent.$parent) { - parent = parent.$parent; - } - parent.$children.push(vm); - } - - vm.$parent = parent; - vm.$root = parent ? parent.$root : vm; - - vm.$children = []; - vm.$refs = {}; - - vm._watcher = null; - vm._inactive = null; - vm._directInactive = false; - vm._isMounted = false; - vm._isDestroyed = false; - vm._isBeingDestroyed = false; -} - -function lifecycleMixin (Vue) { - Vue.prototype._update = function (vnode, hydrating) { - var vm = this; - if (vm._isMounted) { - callHook(vm, 'beforeUpdate'); - } - var prevEl = vm.$el; - var prevVnode = vm._vnode; - var prevActiveInstance = activeInstance; - activeInstance = vm; - vm._vnode = vnode; - // Vue.prototype.__patch__ is injected in entry points - // based on the rendering backend used. - if (!prevVnode) { - // initial render - vm.$el = vm.__patch__( - vm.$el, vnode, hydrating, false /* removeOnly */, - vm.$options._parentElm, - vm.$options._refElm - ); - // no need for the ref nodes after initial patch - // this prevents keeping a detached DOM tree in memory (#5851) - vm.$options._parentElm = vm.$options._refElm = null; - } else { - // updates - vm.$el = vm.__patch__(prevVnode, vnode); - } - activeInstance = prevActiveInstance; - // update __vue__ reference - if (prevEl) { - prevEl.__vue__ = null; - } - if (vm.$el) { - vm.$el.__vue__ = vm; - } - // if parent is an HOC, update its $el as well - if (vm.$vnode && vm.$parent && vm.$vnode === vm.$parent._vnode) { - vm.$parent.$el = vm.$el; - } - // updated hook is called by the scheduler to ensure that children are - // updated in a parent's updated hook. - }; - - Vue.prototype.$forceUpdate = function () { - var vm = this; - if (vm._watcher) { - vm._watcher.update(); - } - }; - - Vue.prototype.$destroy = function () { - var vm = this; - if (vm._isBeingDestroyed) { - return - } - callHook(vm, 'beforeDestroy'); - vm._isBeingDestroyed = true; - // remove self from parent - var parent = vm.$parent; - if (parent && !parent._isBeingDestroyed && !vm.$options.abstract) { - remove(parent.$children, vm); - } - // teardown watchers - if (vm._watcher) { - vm._watcher.teardown(); - } - var i = vm._watchers.length; - while (i--) { - vm._watchers[i].teardown(); - } - // remove reference from data ob - // frozen object may not have observer. - if (vm._data.__ob__) { - vm._data.__ob__.vmCount--; - } - // call the last hook... - vm._isDestroyed = true; - // invoke destroy hooks on current rendered tree - vm.__patch__(vm._vnode, null); - // fire destroyed hook - callHook(vm, 'destroyed'); - // turn off all instance listeners. - vm.$off(); - // remove __vue__ reference - if (vm.$el) { - vm.$el.__vue__ = null; - } - }; -} - -function mountComponent ( - vm, - el, - hydrating -) { - vm.$el = el; - if (!vm.$options.render) { - vm.$options.render = createEmptyVNode; - { - /* istanbul ignore if */ - if ((vm.$options.template && vm.$options.template.charAt(0) !== '#') || - vm.$options.el || el) { - warn( - 'You are using the runtime-only build of Vue where the template ' + - 'compiler is not available. Either pre-compile the templates into ' + - 'render functions, or use the compiler-included build.', - vm - ); - } else { - warn( - 'Failed to mount component: template or render function not defined.', - vm - ); - } - } - } - callHook(vm, 'beforeMount'); - - var updateComponent; - /* istanbul ignore if */ - if ("development" !== 'production' && config.performance && mark) { - updateComponent = function () { - var name = vm._name; - var id = vm._uid; - var startTag = "vue-perf-start:" + id; - var endTag = "vue-perf-end:" + id; - - mark(startTag); - var vnode = vm._render(); - mark(endTag); - measure((name + " render"), startTag, endTag); - - mark(startTag); - vm._update(vnode, hydrating); - mark(endTag); - measure((name + " patch"), startTag, endTag); - }; - } else { - updateComponent = function () { - vm._update(vm._render(), hydrating); - }; - } - - vm._watcher = new Watcher(vm, updateComponent, noop); - hydrating = false; - - // manually mounted instance, call mounted on self - // mounted is called for render-created child components in its inserted hook - if (vm.$vnode == null) { - vm._isMounted = true; - callHook(vm, 'mounted'); - } - return vm -} - -function updateChildComponent ( - vm, - propsData, - listeners, - parentVnode, - renderChildren -) { - { - isUpdatingChildComponent = true; - } - - // determine whether component has slot children - // we need to do this before overwriting $options._renderChildren - var hasChildren = !!( - renderChildren || // has new static slots - vm.$options._renderChildren || // has old static slots - parentVnode.data.scopedSlots || // has new scoped slots - vm.$scopedSlots !== emptyObject // has old scoped slots - ); - - vm.$options._parentVnode = parentVnode; - vm.$vnode = parentVnode; // update vm's placeholder node without re-render - - if (vm._vnode) { // update child tree's parent - vm._vnode.parent = parentVnode; - } - vm.$options._renderChildren = renderChildren; - - // update $attrs and $listensers hash - // these are also reactive so they may trigger child update if the child - // used them during render - vm.$attrs = (parentVnode.data && parentVnode.data.attrs) || emptyObject; - vm.$listeners = listeners || emptyObject; - - // update props - if (propsData && vm.$options.props) { - observerState.shouldConvert = false; - var props = vm._props; - var propKeys = vm.$options._propKeys || []; - for (var i = 0; i < propKeys.length; i++) { - var key = propKeys[i]; - props[key] = validateProp(key, vm.$options.props, propsData, vm); - } - observerState.shouldConvert = true; - // keep a copy of raw propsData - vm.$options.propsData = propsData; - } - - // update listeners - if (listeners) { - var oldListeners = vm.$options._parentListeners; - vm.$options._parentListeners = listeners; - updateComponentListeners(vm, listeners, oldListeners); - } - // resolve slots + force update if has children - if (hasChildren) { - vm.$slots = resolveSlots(renderChildren, parentVnode.context); - vm.$forceUpdate(); - } - - { - isUpdatingChildComponent = false; - } -} - -function isInInactiveTree (vm) { - while (vm && (vm = vm.$parent)) { - if (vm._inactive) { return true } - } - return false -} - -function activateChildComponent (vm, direct) { - if (direct) { - vm._directInactive = false; - if (isInInactiveTree(vm)) { - return - } - } else if (vm._directInactive) { - return - } - if (vm._inactive || vm._inactive === null) { - vm._inactive = false; - for (var i = 0; i < vm.$children.length; i++) { - activateChildComponent(vm.$children[i]); - } - callHook(vm, 'activated'); - } -} - -function deactivateChildComponent (vm, direct) { - if (direct) { - vm._directInactive = true; - if (isInInactiveTree(vm)) { - return - } - } - if (!vm._inactive) { - vm._inactive = true; - for (var i = 0; i < vm.$children.length; i++) { - deactivateChildComponent(vm.$children[i]); - } - callHook(vm, 'deactivated'); - } -} - -function callHook (vm, hook) { - var handlers = vm.$options[hook]; - if (handlers) { - for (var i = 0, j = handlers.length; i < j; i++) { - try { - handlers[i].call(vm); - } catch (e) { - handleError(e, vm, (hook + " hook")); - } - } - } - if (vm._hasHookEvent) { - vm.$emit('hook:' + hook); - } -} - -/* */ - - -var MAX_UPDATE_COUNT = 100; - -var queue = []; -var activatedChildren = []; -var has = {}; -var circular = {}; -var waiting = false; -var flushing = false; -var index = 0; - -/** - * Reset the scheduler's state. - */ -function resetSchedulerState () { - index = queue.length = activatedChildren.length = 0; - has = {}; - { - circular = {}; - } - waiting = flushing = false; -} - -/** - * Flush both queues and run the watchers. - */ -function flushSchedulerQueue () { - flushing = true; - var watcher, id; - - // Sort queue before flush. - // This ensures that: - // 1. Components are updated from parent to child. (because parent is always - // created before the child) - // 2. A component's user watchers are run before its render watcher (because - // user watchers are created before the render watcher) - // 3. If a component is destroyed during a parent component's watcher run, - // its watchers can be skipped. - queue.sort(function (a, b) { return a.id - b.id; }); - - // do not cache length because more watchers might be pushed - // as we run existing watchers - for (index = 0; index < queue.length; index++) { - watcher = queue[index]; - id = watcher.id; - has[id] = null; - watcher.run(); - // in dev build, check and stop circular updates. - if ("development" !== 'production' && has[id] != null) { - circular[id] = (circular[id] || 0) + 1; - if (circular[id] > MAX_UPDATE_COUNT) { - warn( - 'You may have an infinite update loop ' + ( - watcher.user - ? ("in watcher with expression \"" + (watcher.expression) + "\"") - : "in a component render function." - ), - watcher.vm - ); - break - } - } - } - - // keep copies of post queues before resetting state - var activatedQueue = activatedChildren.slice(); - var updatedQueue = queue.slice(); - - resetSchedulerState(); - - // call component updated and activated hooks - callActivatedHooks(activatedQueue); - callUpdatedHooks(updatedQueue); - - // devtool hook - /* istanbul ignore if */ - if (devtools && config.devtools) { - devtools.emit('flush'); - } -} - -function callUpdatedHooks (queue) { - var i = queue.length; - while (i--) { - var watcher = queue[i]; - var vm = watcher.vm; - if (vm._watcher === watcher && vm._isMounted) { - callHook(vm, 'updated'); - } - } -} - -/** - * Queue a kept-alive component that was activated during patch. - * The queue will be processed after the entire tree has been patched. - */ -function queueActivatedComponent (vm) { - // setting _inactive to false here so that a render function can - // rely on checking whether it's in an inactive tree (e.g. router-view) - vm._inactive = false; - activatedChildren.push(vm); -} - -function callActivatedHooks (queue) { - for (var i = 0; i < queue.length; i++) { - queue[i]._inactive = true; - activateChildComponent(queue[i], true /* true */); - } -} - -/** - * Push a watcher into the watcher queue. - * Jobs with duplicate IDs will be skipped unless it's - * pushed when the queue is being flushed. - */ -function queueWatcher (watcher) { - var id = watcher.id; - if (has[id] == null) { - has[id] = true; - if (!flushing) { - queue.push(watcher); - } else { - // if already flushing, splice the watcher based on its id - // if already past its id, it will be run next immediately. - var i = queue.length - 1; - while (i > index && queue[i].id > watcher.id) { - i--; - } - queue.splice(i + 1, 0, watcher); - } - // queue the flush - if (!waiting) { - waiting = true; - nextTick(flushSchedulerQueue); - } - } -} - -/* */ - -var uid$2 = 0; - -/** - * A watcher parses an expression, collects dependencies, - * and fires callback when the expression value changes. - * This is used for both the $watch() api and directives. - */ -var Watcher = function Watcher ( - vm, - expOrFn, - cb, - options -) { - this.vm = vm; - vm._watchers.push(this); - // options - if (options) { - this.deep = !!options.deep; - this.user = !!options.user; - this.lazy = !!options.lazy; - this.sync = !!options.sync; - } else { - this.deep = this.user = this.lazy = this.sync = false; - } - this.cb = cb; - this.id = ++uid$2; // uid for batching - this.active = true; - this.dirty = this.lazy; // for lazy watchers - this.deps = []; - this.newDeps = []; - this.depIds = new _Set(); - this.newDepIds = new _Set(); - this.expression = expOrFn.toString(); - // parse expression for getter - if (typeof expOrFn === 'function') { - this.getter = expOrFn; - } else { - this.getter = parsePath(expOrFn); - if (!this.getter) { - this.getter = function () {}; - "development" !== 'production' && warn( - "Failed watching path: \"" + expOrFn + "\" " + - 'Watcher only accepts simple dot-delimited paths. ' + - 'For full control, use a function instead.', - vm - ); - } - } - this.value = this.lazy - ? undefined - : this.get(); -}; - -/** - * Evaluate the getter, and re-collect dependencies. - */ -Watcher.prototype.get = function get () { - pushTarget(this); - var value; - var vm = this.vm; - try { - value = this.getter.call(vm, vm); - } catch (e) { - if (this.user) { - handleError(e, vm, ("getter for watcher \"" + (this.expression) + "\"")); - } else { - throw e - } - } finally { - // "touch" every property so they are all tracked as - // dependencies for deep watching - if (this.deep) { - traverse(value); - } - popTarget(); - this.cleanupDeps(); - } - return value -}; - -/** - * Add a dependency to this directive. - */ -Watcher.prototype.addDep = function addDep (dep) { - var id = dep.id; - if (!this.newDepIds.has(id)) { - this.newDepIds.add(id); - this.newDeps.push(dep); - if (!this.depIds.has(id)) { - dep.addSub(this); - } - } -}; - -/** - * Clean up for dependency collection. - */ -Watcher.prototype.cleanupDeps = function cleanupDeps () { - var this$1 = this; - - var i = this.deps.length; - while (i--) { - var dep = this$1.deps[i]; - if (!this$1.newDepIds.has(dep.id)) { - dep.removeSub(this$1); - } - } - var tmp = this.depIds; - this.depIds = this.newDepIds; - this.newDepIds = tmp; - this.newDepIds.clear(); - tmp = this.deps; - this.deps = this.newDeps; - this.newDeps = tmp; - this.newDeps.length = 0; -}; - -/** - * Subscriber interface. - * Will be called when a dependency changes. - */ -Watcher.prototype.update = function update () { - /* istanbul ignore else */ - if (this.lazy) { - this.dirty = true; - } else if (this.sync) { - this.run(); - } else { - queueWatcher(this); - } -}; - -/** - * Scheduler job interface. - * Will be called by the scheduler. - */ -Watcher.prototype.run = function run () { - if (this.active) { - var value = this.get(); - if ( - value !== this.value || - // Deep watchers and watchers on Object/Arrays should fire even - // when the value is the same, because the value may - // have mutated. - isObject(value) || - this.deep - ) { - // set new value - var oldValue = this.value; - this.value = value; - if (this.user) { - try { - this.cb.call(this.vm, value, oldValue); - } catch (e) { - handleError(e, this.vm, ("callback for watcher \"" + (this.expression) + "\"")); - } - } else { - this.cb.call(this.vm, value, oldValue); - } - } - } -}; - -/** - * Evaluate the value of the watcher. - * This only gets called for lazy watchers. - */ -Watcher.prototype.evaluate = function evaluate () { - this.value = this.get(); - this.dirty = false; -}; - -/** - * Depend on all deps collected by this watcher. - */ -Watcher.prototype.depend = function depend () { - var this$1 = this; - - var i = this.deps.length; - while (i--) { - this$1.deps[i].depend(); - } -}; - -/** - * Remove self from all dependencies' subscriber list. - */ -Watcher.prototype.teardown = function teardown () { - var this$1 = this; - - if (this.active) { - // remove self from vm's watcher list - // this is a somewhat expensive operation so we skip it - // if the vm is being destroyed. - if (!this.vm._isBeingDestroyed) { - remove(this.vm._watchers, this); - } - var i = this.deps.length; - while (i--) { - this$1.deps[i].removeSub(this$1); - } - this.active = false; - } -}; - -/** - * Recursively traverse an object to evoke all converted - * getters, so that every nested property inside the object - * is collected as a "deep" dependency. - */ -var seenObjects = new _Set(); -function traverse (val) { - seenObjects.clear(); - _traverse(val, seenObjects); -} - -function _traverse (val, seen) { - var i, keys; - var isA = Array.isArray(val); - if ((!isA && !isObject(val)) || !Object.isExtensible(val)) { - return - } - if (val.__ob__) { - var depId = val.__ob__.dep.id; - if (seen.has(depId)) { - return - } - seen.add(depId); - } - if (isA) { - i = val.length; - while (i--) { _traverse(val[i], seen); } - } else { - keys = Object.keys(val); - i = keys.length; - while (i--) { _traverse(val[keys[i]], seen); } - } -} - -/* */ - -var sharedPropertyDefinition = { - enumerable: true, - configurable: true, - get: noop, - set: noop -}; - -function proxy (target, sourceKey, key) { - sharedPropertyDefinition.get = function proxyGetter () { - return this[sourceKey][key] - }; - sharedPropertyDefinition.set = function proxySetter (val) { - this[sourceKey][key] = val; - }; - Object.defineProperty(target, key, sharedPropertyDefinition); -} - -function initState (vm) { - vm._watchers = []; - var opts = vm.$options; - if (opts.props) { initProps(vm, opts.props); } - if (opts.methods) { initMethods(vm, opts.methods); } - if (opts.data) { - initData(vm); - } else { - observe(vm._data = {}, true /* asRootData */); - } - if (opts.computed) { initComputed(vm, opts.computed); } - if (opts.watch && opts.watch !== nativeWatch) { - initWatch(vm, opts.watch); - } -} - -function checkOptionType (vm, name) { - var option = vm.$options[name]; - if (!isPlainObject(option)) { - warn( - ("component option \"" + name + "\" should be an object."), - vm - ); - } -} - -function initProps (vm, propsOptions) { - var propsData = vm.$options.propsData || {}; - var props = vm._props = {}; - // cache prop keys so that future props updates can iterate using Array - // instead of dynamic object key enumeration. - var keys = vm.$options._propKeys = []; - var isRoot = !vm.$parent; - // root instance props should be converted - observerState.shouldConvert = isRoot; - var loop = function ( key ) { - keys.push(key); - var value = validateProp(key, propsOptions, propsData, vm); - /* istanbul ignore else */ - { - if (isReservedAttribute(key) || config.isReservedAttr(key)) { - warn( - ("\"" + key + "\" is a reserved attribute and cannot be used as component prop."), - vm - ); - } - defineReactive$$1(props, key, value, function () { - if (vm.$parent && !isUpdatingChildComponent) { - warn( - "Avoid mutating a prop directly since the value will be " + - "overwritten whenever the parent component re-renders. " + - "Instead, use a data or computed property based on the prop's " + - "value. Prop being mutated: \"" + key + "\"", - vm - ); - } - }); - } - // static props are already proxied on the component's prototype - // during Vue.extend(). We only need to proxy props defined at - // instantiation here. - if (!(key in vm)) { - proxy(vm, "_props", key); - } - }; - - for (var key in propsOptions) { loop( key ); } - observerState.shouldConvert = true; -} - -function initData (vm) { - var data = vm.$options.data; - data = vm._data = typeof data === 'function' - ? getData(data, vm) - : data || {}; - if (!isPlainObject(data)) { - data = {}; - "development" !== 'production' && warn( - 'data functions should return an object:\n' + - 'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function', - vm - ); - } - // proxy data on instance - var keys = Object.keys(data); - var props = vm.$options.props; - var methods = vm.$options.methods; - var i = keys.length; - while (i--) { - var key = keys[i]; - { - if (methods && hasOwn(methods, key)) { - warn( - ("Method \"" + key + "\" has already been defined as a data property."), - vm - ); - } - } - if (props && hasOwn(props, key)) { - "development" !== 'production' && warn( - "The data property \"" + key + "\" is already declared as a prop. " + - "Use prop default value instead.", - vm - ); - } else if (!isReserved(key)) { - proxy(vm, "_data", key); - } - } - // observe data - observe(data, true /* asRootData */); -} - -function getData (data, vm) { - try { - return data.call(vm) - } catch (e) { - handleError(e, vm, "data()"); - return {} - } -} - -var computedWatcherOptions = { lazy: true }; - -function initComputed (vm, computed) { - "development" !== 'production' && checkOptionType(vm, 'computed'); - var watchers = vm._computedWatchers = Object.create(null); - // computed properties are just getters during SSR - var isSSR = isServerRendering(); - - for (var key in computed) { - var userDef = computed[key]; - var getter = typeof userDef === 'function' ? userDef : userDef.get; - if ("development" !== 'production' && getter == null) { - warn( - ("Getter is missing for computed property \"" + key + "\"."), - vm - ); - } - - if (!isSSR) { - // create internal watcher for the computed property. - watchers[key] = new Watcher( - vm, - getter || noop, - noop, - computedWatcherOptions - ); - } - - // component-defined computed properties are already defined on the - // component prototype. We only need to define computed properties defined - // at instantiation here. - if (!(key in vm)) { - defineComputed(vm, key, userDef); - } else { - if (key in vm.$data) { - warn(("The computed property \"" + key + "\" is already defined in data."), vm); - } else if (vm.$options.props && key in vm.$options.props) { - warn(("The computed property \"" + key + "\" is already defined as a prop."), vm); - } - } - } -} - -function defineComputed ( - target, - key, - userDef -) { - var shouldCache = !isServerRendering(); - if (typeof userDef === 'function') { - sharedPropertyDefinition.get = shouldCache - ? createComputedGetter(key) - : userDef; - sharedPropertyDefinition.set = noop; - } else { - sharedPropertyDefinition.get = userDef.get - ? shouldCache && userDef.cache !== false - ? createComputedGetter(key) - : userDef.get - : noop; - sharedPropertyDefinition.set = userDef.set - ? userDef.set - : noop; - } - if ("development" !== 'production' && - sharedPropertyDefinition.set === noop) { - sharedPropertyDefinition.set = function () { - warn( - ("Computed property \"" + key + "\" was assigned to but it has no setter."), - this - ); - }; - } - Object.defineProperty(target, key, sharedPropertyDefinition); -} - -function createComputedGetter (key) { - return function computedGetter () { - var watcher = this._computedWatchers && this._computedWatchers[key]; - if (watcher) { - if (watcher.dirty) { - watcher.evaluate(); - } - if (Dep.target) { - watcher.depend(); - } - return watcher.value - } - } -} - -function initMethods (vm, methods) { - "development" !== 'production' && checkOptionType(vm, 'methods'); - var props = vm.$options.props; - for (var key in methods) { - { - if (methods[key] == null) { - warn( - "Method \"" + key + "\" has an undefined value in the component definition. " + - "Did you reference the function correctly?", - vm - ); - } - if (props && hasOwn(props, key)) { - warn( - ("Method \"" + key + "\" has already been defined as a prop."), - vm - ); - } - if ((key in vm) && isReserved(key)) { - warn( - "Method \"" + key + "\" conflicts with an existing Vue instance method. " + - "Avoid defining component methods that start with _ or $." - ); - } - } - vm[key] = methods[key] == null ? noop : bind(methods[key], vm); - } -} - -function initWatch (vm, watch) { - "development" !== 'production' && checkOptionType(vm, 'watch'); - for (var key in watch) { - var handler = watch[key]; - if (Array.isArray(handler)) { - for (var i = 0; i < handler.length; i++) { - createWatcher(vm, key, handler[i]); - } - } e
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