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712 KiB
{"ast":null,"code":"import \"core-js/modules/web.immediate.js\";\n\n/*!\n * Vue.js v2.6.14\n * (c) 2014-2021 Evan You\n * Released under the MIT License.\n */\n\n/* */\nvar emptyObject = Object.freeze({}); // These helpers produce better VM code in JS engines due to their\n// explicitness and function inlining.\n\nfunction isUndef(v) {\n return v === undefined || v === null;\n}\n\nfunction isDef(v) {\n return v !== undefined && v !== null;\n}\n\nfunction isTrue(v) {\n return v === true;\n}\n\nfunction isFalse(v) {\n return v === false;\n}\n/**\n * Check if value is primitive.\n */\n\n\nfunction isPrimitive(value) {\n return typeof value === 'string' || typeof value === 'number' || // $flow-disable-line\n typeof value === 'symbol' || typeof value === 'boolean';\n}\n/**\n * Quick object check - this is primarily used to tell\n * Objects from primitive values when we know the value\n * is a JSON-compliant type.\n */\n\n\nfunction isObject(obj) {\n return obj !== null && typeof obj === 'object';\n}\n/**\n * Get the raw type string of a value, e.g., [object Object].\n */\n\n\nvar _toString = Object.prototype.toString;\n\nfunction toRawType(value) {\n return _toString.call(value).slice(8, -1);\n}\n/**\n * Strict object type check. Only returns true\n * for plain JavaScript objects.\n */\n\n\nfunction isPlainObject(obj) {\n return _toString.call(obj) === '[object Object]';\n}\n\nfunction isRegExp(v) {\n return _toString.call(v) === '[object RegExp]';\n}\n/**\n * Check if val is a valid array index.\n */\n\n\nfunction isValidArrayIndex(val) {\n var n = parseFloat(String(val));\n return n >= 0 && Math.floor(n) === n && isFinite(val);\n}\n\nfunction isPromise(val) {\n return isDef(val) && typeof val.then === 'function' && typeof val.catch === 'function';\n}\n/**\n * Convert a value to a string that is actually rendered.\n */\n\n\nfunction toString(val) {\n return val == null ? '' : Array.isArray(val) || isPlainObject(val) && val.toString === _toString ? JSON.stringify(val, null, 2) : String(val);\n}\n/**\n * Convert an input value to a number for persistence.\n * If the conversion fails, return original string.\n */\n\n\nfunction toNumber(val) {\n var n = parseFloat(val);\n return isNaN(n) ? val : n;\n}\n/**\n * Make a map and return a function for checking if a key\n * is in that map.\n */\n\n\nfunction makeMap(str, expectsLowerCase) {\n var map = Object.create(null);\n var list = str.split(',');\n\n for (var i = 0; i < list.length; i++) {\n map[list[i]] = true;\n }\n\n return expectsLowerCase ? function (val) {\n return map[val.toLowerCase()];\n } : function (val) {\n return map[val];\n };\n}\n/**\n * Check if a tag is a built-in tag.\n */\n\n\nvar isBuiltInTag = makeMap('slot,component', true);\n/**\n * Check if an attribute is a reserved attribute.\n */\n\nvar isReservedAttribute = makeMap('key,ref,slot,slot-scope,is');\n/**\n * Remove an item from an array.\n */\n\nfunction remove(arr, item) {\n if (arr.length) {\n var index = arr.indexOf(item);\n\n if (index > -1) {\n return arr.splice(index, 1);\n }\n }\n}\n/**\n * Check whether an object has the property.\n */\n\n\nvar hasOwnProperty = Object.prototype.hasOwnProperty;\n\nfunction hasOwn(obj, key) {\n return hasOwnProperty.call(obj, key);\n}\n/**\n * Create a cached version of a pure function.\n */\n\n\nfunction cached(fn) {\n var cache = Object.create(null);\n return function cachedFn(str) {\n var hit = cache[str];\n return hit || (cache[str] = fn(str));\n };\n}\n/**\n * Camelize a hyphen-delimited string.\n */\n\n\nvar camelizeRE = /-(\\w)/g;\nvar camelize = cached(function (str) {\n return str.replace(camelizeRE, function (_, c) {\n return c ? c.toUpperCase() : '';\n });\n});\n/**\n * Capitalize a string.\n */\n\nvar capitalize = cached(function (str) {\n return str.charAt(0).toUpperCase() + str.slice(1);\n});\n/**\n * Hyphenate a camelCase string.\n */\n\nvar hyphenateRE = /\\B([A-Z])/g;\nvar hyphenate = cached(function (str) {\n return str.replace(hyphenateRE, '-$1').toLowerCase();\n});\n/**\n * Simple bind polyfill for environments that do not support it,\n * e.g., PhantomJS 1.x. Technically, we don't need this anymore\n * since native bind is now performant enough in most browsers.\n * But removing it would mean breaking code that was able to run in\n * PhantomJS 1.x, so this must be kept for backward compatibility.\n */\n\n/* istanbul ignore next */\n\nfunction polyfillBind(fn, ctx) {\n function boundFn(a) {\n var l = arguments.length;\n return l ? l > 1 ? fn.apply(ctx, arguments) : fn.call(ctx, a) : fn.call(ctx);\n }\n\n boundFn._length = fn.length;\n return boundFn;\n}\n\nfunction nativeBind(fn, ctx) {\n return fn.bind(ctx);\n}\n\nvar bind = Function.prototype.bind ? nativeBind : polyfillBind;\n/**\n * Convert an Array-like object to a real Array.\n */\n\nfunction toArray(list, start) {\n start = start || 0;\n var i = list.length - start;\n var ret = new Array(i);\n\n while (i--) {\n ret[i] = list[i + start];\n }\n\n return ret;\n}\n/**\n * Mix properties into target object.\n */\n\n\nfunction extend(to, _from) {\n for (var key in _from) {\n to[key] = _from[key];\n }\n\n return to;\n}\n/**\n * Merge an Array of Objects into a single Object.\n */\n\n\nfunction toObject(arr) {\n var res = {};\n\n for (var i = 0; i < arr.length; i++) {\n if (arr[i]) {\n extend(res, arr[i]);\n }\n }\n\n return res;\n}\n/* eslint-disable no-unused-vars */\n\n/**\n * Perform no operation.\n * Stubbing args to make Flow happy without leaving useless transpiled code\n * with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/).\n */\n\n\nfunction noop(a, b, c) {}\n/**\n * Always return false.\n */\n\n\nvar no = function (a, b, c) {\n return false;\n};\n/* eslint-enable no-unused-vars */\n\n/**\n * Return the same value.\n */\n\n\nvar identity = function (_) {\n return _;\n};\n/**\n * Check if two values are loosely equal - that is,\n * if they are plain objects, do they have the same shape?\n */\n\n\nfunction looseEqual(a, b) {\n if (a === b) {\n return true;\n }\n\n var isObjectA = isObject(a);\n var isObjectB = isObject(b);\n\n if (isObjectA && isObjectB) {\n try {\n var isArrayA = Array.isArray(a);\n var isArrayB = Array.isArray(b);\n\n if (isArrayA && isArrayB) {\n return a.length === b.length && a.every(function (e, i) {\n return looseEqual(e, b[i]);\n });\n } else if (a instanceof Date && b instanceof Date) {\n return a.getTime() === b.getTime();\n } else if (!isArrayA && !isArrayB) {\n var keysA = Object.keys(a);\n var keysB = Object.keys(b);\n return keysA.length === keysB.length && keysA.every(function (key) {\n return looseEqual(a[key], b[key]);\n });\n } else {\n /* istanbul ignore next */\n return false;\n }\n } catch (e) {\n /* istanbul ignore next */\n return false;\n }\n } else if (!isObjectA && !isObjectB) {\n return String(a) === String(b);\n } else {\n return false;\n }\n}\n/**\n * Return the first index at which a loosely equal value can be\n * found in the array (if value is a plain object, the array must\n * contain an object of the same shape), or -1 if it is not present.\n */\n\n\nfunction looseIndexOf(arr, val) {\n for (var i = 0; i < arr.length; i++) {\n if (looseEqual(arr[i], val)) {\n return i;\n }\n }\n\n return -1;\n}\n/**\n * Ensure a function is called only once.\n */\n\n\nfunction once(fn) {\n var called = false;\n return function () {\n if (!called) {\n called = true;\n fn.apply(this, arguments);\n }\n };\n}\n\nvar SSR_ATTR = 'data-server-rendered';\nvar ASSET_TYPES = ['component', 'directive', 'filter'];\nvar LIFECYCLE_HOOKS = ['beforeCreate', 'created', 'beforeMount', 'mounted', 'beforeUpdate', 'updated', 'beforeDestroy', 'destroyed', 'activated', 'deactivated', 'errorCaptured', 'serverPrefetch'];\n/* */\n\nvar config = {\n /**\n * Option merge strategies (used in core/util/options)\n */\n // $flow-disable-line\n optionMergeStrategies: Object.create(null),\n\n /**\n * Whether to suppress warnings.\n */\n silent: false,\n\n /**\n * Show production mode tip message on boot?\n */\n productionTip: process.env.NODE_ENV !== 'production',\n\n /**\n * Whether to enable devtools\n */\n devtools: process.env.NODE_ENV !== 'production',\n\n /**\n * Whether to record perf\n */\n performance: false,\n\n /**\n * Error handler for watcher errors\n */\n errorHandler: null,\n\n /**\n * Warn handler for watcher warns\n */\n warnHandler: null,\n\n /**\n * Ignore certain custom elements\n */\n ignoredElements: [],\n\n /**\n * Custom user key aliases for v-on\n */\n // $flow-disable-line\n keyCodes: Object.create(null),\n\n /**\n * Check if a tag is reserved so that it cannot be registered as a\n * component. This is platform-dependent and may be overwritten.\n */\n isReservedTag: no,\n\n /**\n * Check if an attribute is reserved so that it cannot be used as a component\n * prop. This is platform-dependent and may be overwritten.\n */\n isReservedAttr: no,\n\n /**\n * Check if a tag is an unknown element.\n * Platform-dependent.\n */\n isUnknownElement: no,\n\n /**\n * Get the namespace of an element\n */\n getTagNamespace: noop,\n\n /**\n * Parse the real tag name for the specific platform.\n */\n parsePlatformTagName: identity,\n\n /**\n * Check if an attribute must be bound using property, e.g. value\n * Platform-dependent.\n */\n mustUseProp: no,\n\n /**\n * Perform updates asynchronously. Intended to be used by Vue Test Utils\n * This will significantly reduce performance if set to false.\n */\n async: true,\n\n /**\n * Exposed for legacy reasons\n */\n _lifecycleHooks: LIFECYCLE_HOOKS\n};\n/* */\n\n/**\n * unicode letters used for parsing html tags, component names and property paths.\n * using https://www.w3.org/TR/html53/semantics-scripting.html#potentialcustomelementname\n * skipping \\u10000-\\uEFFFF due to it freezing up PhantomJS\n */\n\nvar unicodeRegExp = /a-zA-Z\\u00B7\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u037D\\u037F-\\u1FFF\\u200C-\\u200D\\u203F-\\u2040\\u2070-\\u218F\\u2C00-\\u2FEF\\u3001-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFFD/;\n/**\n * Check if a string starts with $ or _\n */\n\nfunction isReserved(str) {\n var c = (str + '').charCodeAt(0);\n return c === 0x24 || c === 0x5F;\n}\n/**\n * Define a property.\n */\n\n\nfunction def(obj, key, val, enumerable) {\n Object.defineProperty(obj, key, {\n value: val,\n enumerable: !!enumerable,\n writable: true,\n configurable: true\n });\n}\n/**\n * Parse simple path.\n */\n\n\nvar bailRE = new RegExp(\"[^\" + unicodeRegExp.source + \".$_\\\\d]\");\n\nfunction parsePath(path) {\n if (bailRE.test(path)) {\n return;\n }\n\n var segments = path.split('.');\n return function (obj) {\n for (var i = 0; i < segments.length; i++) {\n if (!obj) {\n return;\n }\n\n obj = obj[segments[i]];\n }\n\n return obj;\n };\n}\n/* */\n// can we use __proto__?\n\n\nvar hasProto = ('__proto__' in {}); // Browser environment sniffing\n\nvar inBrowser = typeof window !== 'undefined';\nvar inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform;\nvar weexPlatform = inWeex && WXEnvironment.platform.toLowerCase();\nvar UA = inBrowser && window.navigator.userAgent.toLowerCase();\nvar isIE = UA && /msie|trident/.test(UA);\nvar isIE9 = UA && UA.indexOf('msie 9.0') > 0;\nvar isEdge = UA && UA.indexOf('edge/') > 0;\nvar isAndroid = UA && UA.indexOf('android') > 0 || weexPlatform === 'android';\nvar isIOS = UA && /iphone|ipad|ipod|ios/.test(UA) || weexPlatform === 'ios';\nvar isChrome = UA && /chrome\\/\\d+/.test(UA) && !isEdge;\nvar isPhantomJS = UA && /phantomjs/.test(UA);\nvar isFF = UA && UA.match(/firefox\\/(\\d+)/); // Firefox has a \"watch\" function on Object.prototype...\n\nvar nativeWatch = {}.watch;\nvar supportsPassive = false;\n\nif (inBrowser) {\n try {\n var opts = {};\n Object.defineProperty(opts, 'passive', {\n get: function get() {\n /* istanbul ignore next */\n supportsPassive = true;\n }\n }); // https://github.com/facebook/flow/issues/285\n\n window.addEventListener('test-passive', null, opts);\n } catch (e) {}\n} // this needs to be lazy-evaled because vue may be required before\n// vue-server-renderer can set VUE_ENV\n\n\nvar _isServer;\n\nvar isServerRendering = function () {\n if (_isServer === undefined) {\n /* istanbul ignore if */\n if (!inBrowser && !inWeex && typeof global !== 'undefined') {\n // detect presence of vue-server-renderer and avoid\n // Webpack shimming the process\n _isServer = global['process'] && global['process'].env.VUE_ENV === 'server';\n } else {\n _isServer = false;\n }\n }\n\n return _isServer;\n}; // detect devtools\n\n\nvar devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__;\n/* istanbul ignore next */\n\nfunction isNative(Ctor) {\n return typeof Ctor === 'function' && /native code/.test(Ctor.toString());\n}\n\nvar hasSymbol = typeof Symbol !== 'undefined' && isNative(Symbol) && typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys);\n\nvar _Set;\n/* istanbul ignore if */\n// $flow-disable-line\n\n\nif (typeof Set !== 'undefined' && isNative(Set)) {\n // use native Set when available.\n _Set = Set;\n} else {\n // a non-standard Set polyfill that only works with primitive keys.\n _Set = /*@__PURE__*/function () {\n function Set() {\n this.set = Object.create(null);\n }\n\n Set.prototype.has = function has(key) {\n return this.set[key] === true;\n };\n\n Set.prototype.add = function add(key) {\n this.set[key] = true;\n };\n\n Set.prototype.clear = function clear() {\n this.set = Object.create(null);\n };\n\n return Set;\n }();\n}\n/* */\n\n\nvar warn = noop;\nvar tip = noop;\nvar generateComponentTrace = noop; // work around flow check\n\nvar formatComponentName = noop;\n\nif (process.env.NODE_ENV !== 'production') {\n var hasConsole = typeof console !== 'undefined';\n var classifyRE = /(?:^|[-_])(\\w)/g;\n\n var classify = function (str) {\n return str.replace(classifyRE, function (c) {\n return c.toUpperCase();\n }).replace(/[-_]/g, '');\n };\n\n warn = function (msg, vm) {\n var trace = vm ? generateComponentTrace(vm) : '';\n\n if (config.warnHandler) {\n config.warnHandler.call(null, msg, vm, trace);\n } else if (hasConsole && !config.silent) {\n console.error(\"[Vue warn]: \" + msg + trace);\n }\n };\n\n tip = function (msg, vm) {\n if (hasConsole && !config.silent) {\n console.warn(\"[Vue tip]: \" + msg + (vm ? generateComponentTrace(vm) : ''));\n }\n };\n\n formatComponentName = function (vm, includeFile) {\n if (vm.$root === vm) {\n return '<Root>';\n }\n\n var options = typeof vm === 'function' && vm.cid != null ? vm.options : vm._isVue ? vm.$options || vm.constructor.options : vm;\n var name = options.name || options._componentTag;\n var file = options.__file;\n\n if (!name && file) {\n var match = file.match(/([^/\\\\]+)\\.vue$/);\n name = match && match[1];\n }\n\n return (name ? \"<\" + classify(name) + \">\" : \"<Anonymous>\") + (file && includeFile !== false ? \" at \" + file : '');\n };\n\n var repeat = function (str, n) {\n var res = '';\n\n while (n) {\n if (n % 2 === 1) {\n res += str;\n }\n\n if (n > 1) {\n str += str;\n }\n\n n >>= 1;\n }\n\n return res;\n };\n\n generateComponentTrace = function (vm) {\n if (vm._isVue && vm.$parent) {\n var tree = [];\n var currentRecursiveSequence = 0;\n\n while (vm) {\n if (tree.length > 0) {\n var last = tree[tree.length - 1];\n\n if (last.constructor === vm.constructor) {\n currentRecursiveSequence++;\n vm = vm.$parent;\n continue;\n } else if (currentRecursiveSequence > 0) {\n tree[tree.length - 1] = [last, currentRecursiveSequence];\n currentRecursiveSequence = 0;\n }\n }\n\n tree.push(vm);\n vm = vm.$parent;\n }\n\n return '\\n\\nfound in\\n\\n' + tree.map(function (vm, i) {\n return \"\" + (i === 0 ? '---> ' : repeat(' ', 5 + i * 2)) + (Array.isArray(vm) ? formatComponentName(vm[0]) + \"... (\" + vm[1] + \" recursive calls)\" : formatComponentName(vm));\n }).join('\\n');\n } else {\n return \"\\n\\n(found in \" + formatComponentName(vm) + \")\";\n }\n };\n}\n/* */\n\n\nvar uid = 0;\n/**\n * A dep is an observable that can have multiple\n * directives subscribing to it.\n */\n\nvar Dep = function Dep() {\n this.id = uid++;\n this.subs = [];\n};\n\nDep.prototype.addSub = function addSub(sub) {\n this.subs.push(sub);\n};\n\nDep.prototype.removeSub = function removeSub(sub) {\n remove(this.subs, sub);\n};\n\nDep.prototype.depend = function depend() {\n if (Dep.target) {\n Dep.target.addDep(this);\n }\n};\n\nDep.prototype.notify = function notify() {\n // stabilize the subscriber list first\n var subs = this.subs.slice();\n\n if (process.env.NODE_ENV !== 'production' && !config.async) {\n // subs aren't sorted in scheduler if not running async\n // we need to sort them now to make sure they fire in correct\n // order\n subs.sort(function (a, b) {\n return a.id - b.id;\n });\n }\n\n for (var i = 0, l = subs.length; i < l; i++) {\n subs[i].update();\n }\n}; // The current target watcher being evaluated.\n// This is globally unique because only one watcher\n// can be evaluated at a time.\n\n\nDep.target = null;\nvar targetStack = [];\n\nfunction pushTarget(target) {\n targetStack.push(target);\n Dep.target = target;\n}\n\nfunction popTarget() {\n targetStack.pop();\n Dep.target = targetStack[targetStack.length - 1];\n}\n/* */\n\n\nvar VNode = function VNode(tag, data, children, text, elm, context, componentOptions, asyncFactory) {\n this.tag = tag;\n this.data = data;\n this.children = children;\n this.text = text;\n this.elm = elm;\n this.ns = undefined;\n this.context = context;\n this.fnContext = undefined;\n this.fnOptions = undefined;\n this.fnScopeId = undefined;\n this.key = data && data.key;\n this.componentOptions = componentOptions;\n this.componentInstance = undefined;\n this.parent = undefined;\n this.raw = false;\n this.isStatic = false;\n this.isRootInsert = true;\n this.isComment = false;\n this.isCloned = false;\n this.isOnce = false;\n this.asyncFactory = asyncFactory;\n this.asyncMeta = undefined;\n this.isAsyncPlaceholder = false;\n};\n\nvar prototypeAccessors = {\n child: {\n configurable: true\n }\n}; // DEPRECATED: alias for componentInstance for backwards compat.\n\n/* istanbul ignore next */\n\nprototypeAccessors.child.get = function () {\n return this.componentInstance;\n};\n\nObject.defineProperties(VNode.prototype, prototypeAccessors);\n\nvar createEmptyVNode = function (text) {\n if (text === void 0) text = '';\n var node = new VNode();\n node.text = text;\n node.isComment = true;\n return node;\n};\n\nfunction createTextVNode(val) {\n return new VNode(undefined, undefined, undefined, String(val));\n} // optimized shallow clone\n// used for static nodes and slot nodes because they may be reused across\n// multiple renders, cloning them avoids errors when DOM manipulations rely\n// on their elm reference.\n\n\nfunction cloneVNode(vnode) {\n var cloned = new VNode(vnode.tag, vnode.data, // #7975\n // clone children array to avoid mutating original in case of cloning\n // a child.\n vnode.children && vnode.children.slice(), vnode.text, vnode.elm, vnode.context, vnode.componentOptions, vnode.asyncFactory);\n cloned.ns = vnode.ns;\n cloned.isStatic = vnode.isStatic;\n cloned.key = vnode.key;\n cloned.isComment = vnode.isComment;\n cloned.fnContext = vnode.fnContext;\n cloned.fnOptions = vnode.fnOptions;\n cloned.fnScopeId = vnode.fnScopeId;\n cloned.asyncMeta = vnode.asyncMeta;\n cloned.isCloned = true;\n return cloned;\n}\n/*\n * not type checking this file because flow doesn't play well with\n * dynamically accessing methods on Array prototype\n */\n\n\nvar arrayProto = Array.prototype;\nvar arrayMethods = Object.create(arrayProto);\nvar methodsToPatch = ['push', 'pop', 'shift', 'unshift', 'splice', 'sort', 'reverse'];\n/**\n * Intercept mutating methods and emit events\n */\n\nmethodsToPatch.forEach(function (method) {\n // cache original method\n var original = arrayProto[method];\n def(arrayMethods, method, function mutator() {\n var args = [],\n len = arguments.length;\n\n while (len--) args[len] = arguments[len];\n\n var result = original.apply(this, args);\n var ob = this.__ob__;\n var inserted;\n\n switch (method) {\n case 'push':\n case 'unshift':\n inserted = args;\n break;\n\n case 'splice':\n inserted = args.slice(2);\n break;\n }\n\n if (inserted) {\n ob.observeArray(inserted);\n } // notify change\n\n\n ob.dep.notify();\n return result;\n });\n});\n/* */\n\nvar arrayKeys = Object.getOwnPropertyNames(arrayMethods);\n/**\n * In some cases we may want to disable observation inside a component's\n * update computation.\n */\n\nvar shouldObserve = true;\n\nfunction toggleObserving(value) {\n shouldObserve = value;\n}\n/**\n * Observer class that is attached to each observed\n * object. Once attached, the observer converts the target\n * object's property keys into getter/setters that\n * collect dependencies and dispatch updates.\n */\n\n\nvar Observer = function Observer(value) {\n this.value = value;\n this.dep = new Dep();\n this.vmCount = 0;\n def(value, '__ob__', this);\n\n if (Array.isArray(value)) {\n if (hasProto) {\n protoAugment(value, arrayMethods);\n } else {\n copyAugment(value, arrayMethods, arrayKeys);\n }\n\n this.observeArray(value);\n } else {\n this.walk(value);\n }\n};\n/**\n * Walk through all properties and convert them into\n * getter/setters. This method should only be called when\n * value type is Object.\n */\n\n\nObserver.prototype.walk = function walk(obj) {\n var keys = Object.keys(obj);\n\n for (var i = 0; i < keys.length; i++) {\n defineReactive$$1(obj, keys[i]);\n }\n};\n/**\n * Observe a list of Array items.\n */\n\n\nObserver.prototype.observeArray = function observeArray(items) {\n for (var i = 0, l = items.length; i < l; i++) {\n observe(items[i]);\n }\n}; // helpers\n\n/**\n * Augment a target Object or Array by intercepting\n * the prototype chain using __proto__\n */\n\n\nfunction protoAugment(target, src) {\n /* eslint-disable no-proto */\n target.__proto__ = src;\n /* eslint-enable no-proto */\n}\n/**\n * Augment a target Object or Array by defining\n * hidden properties.\n */\n\n/* istanbul ignore next */\n\n\nfunction copyAugment(target, src, keys) {\n for (var i = 0, l = keys.length; i < l; i++) {\n var key = keys[i];\n def(target, key, src[key]);\n }\n}\n/**\n * Attempt to create an observer instance for a value,\n * returns the new observer if successfully observed,\n * or the existing observer if the value already has one.\n */\n\n\nfunction observe(value, asRootData) {\n if (!isObject(value) || value instanceof VNode) {\n return;\n }\n\n var ob;\n\n if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {\n ob = value.__ob__;\n } else if (shouldObserve && !isServerRendering() && (Array.isArray(value) || isPlainObject(value)) && Object.isExtensible(value) && !value._isVue) {\n ob = new Observer(value);\n }\n\n if (asRootData && ob) {\n ob.vmCount++;\n }\n\n return ob;\n}\n/**\n * Define a reactive property on an Object.\n */\n\n\nfunction defineReactive$$1(obj, key, val, customSetter, shallow) {\n var dep = new Dep();\n var property = Object.getOwnPropertyDescriptor(obj, key);\n\n if (property && property.configurable === false) {\n return;\n } // cater for pre-defined getter/setters\n\n\n var getter = property && property.get;\n var setter = property && property.set;\n\n if ((!getter || setter) && arguments.length === 2) {\n val = obj[key];\n }\n\n var childOb = !shallow && observe(val);\n Object.defineProperty(obj, key, {\n enumerable: true,\n configurable: true,\n get: function reactiveGetter() {\n var value = getter ? getter.call(obj) : val;\n\n if (Dep.target) {\n dep.depend();\n\n if (childOb) {\n childOb.dep.depend();\n\n if (Array.isArray(value)) {\n dependArray(value);\n }\n }\n }\n\n return value;\n },\n set: function reactiveSetter(newVal) {\n var value = getter ? getter.call(obj) : val;\n /* eslint-disable no-self-compare */\n\n if (newVal === value || newVal !== newVal && value !== value) {\n return;\n }\n /* eslint-enable no-self-compare */\n\n\n if (process.env.NODE_ENV !== 'production' && customSetter) {\n customSetter();\n } // #7981: for accessor properties without setter\n\n\n if (getter && !setter) {\n return;\n }\n\n if (setter) {\n setter.call(obj, newVal);\n } else {\n val = newVal;\n }\n\n childOb = !shallow && observe(newVal);\n dep.notify();\n }\n });\n}\n/**\n * Set a property on an object. Adds the new property and\n * triggers change notification if the property doesn't\n * already exist.\n */\n\n\nfunction set(target, key, val) {\n if (process.env.NODE_ENV !== 'production' && (isUndef(target) || isPrimitive(target))) {\n warn(\"Cannot set reactive property on undefined, null, or primitive value: \" + target);\n }\n\n if (Array.isArray(target) && isValidArrayIndex(key)) {\n target.length = Math.max(target.length, key);\n target.splice(key, 1, val);\n return val;\n }\n\n if (key in target && !(key in Object.prototype)) {\n target[key] = val;\n return val;\n }\n\n var ob = target.__ob__;\n\n if (target._isVue || ob && ob.vmCount) {\n process.env.NODE_ENV !== 'production' && warn('Avoid adding reactive properties to a Vue instance or its root $data ' + 'at runtime - declare it upfront in the data option.');\n return val;\n }\n\n if (!ob) {\n target[key] = val;\n return val;\n }\n\n defineReactive$$1(ob.value, key, val);\n ob.dep.notify();\n return val;\n}\n/**\n * Delete a property and trigger change if necessary.\n */\n\n\nfunction del(target, key) {\n if (process.env.NODE_ENV !== 'production' && (isUndef(target) || isPrimitive(target))) {\n warn(\"Cannot delete reactive property on undefined, null, or primitive value: \" + target);\n }\n\n if (Array.isArray(target) && isValidArrayIndex(key)) {\n target.splice(key, 1);\n return;\n }\n\n var ob = target.__ob__;\n\n if (target._isVue || ob && ob.vmCount) {\n process.env.NODE_ENV !== 'production' && warn('Avoid deleting properties on a Vue instance or its root $data ' + '- just set it to null.');\n return;\n }\n\n if (!hasOwn(target, key)) {\n return;\n }\n\n delete target[key];\n\n if (!ob) {\n return;\n }\n\n ob.dep.notify();\n}\n/**\n * Collect dependencies on array elements when the array is touched, since\n * we cannot intercept array element access like property getters.\n */\n\n\nfunction dependArray(value) {\n for (var e = void 0, i = 0, l = value.length; i < l; i++) {\n e = value[i];\n e && e.__ob__ && e.__ob__.dep.depend();\n\n if (Array.isArray(e)) {\n dependArray(e);\n }\n }\n}\n/* */\n\n/**\n * Option overwriting strategies are functions that handle\n * how to merge a parent option value and a child option\n * value into the final value.\n */\n\n\nvar strats = config.optionMergeStrategies;\n/**\n * Options with restrictions\n */\n\nif (process.env.NODE_ENV !== 'production') {\n strats.el = strats.propsData = function (parent, child, vm, key) {\n if (!vm) {\n warn(\"option \\\"\" + key + \"\\\" can only be used during instance \" + 'creation with the `new` keyword.');\n }\n\n return defaultStrat(parent, child);\n };\n}\n/**\n * Helper that recursively merges two data objects together.\n */\n\n\nfunction mergeData(to, from) {\n if (!from) {\n return to;\n }\n\n var key, toVal, fromVal;\n var keys = hasSymbol ? Reflect.ownKeys(from) : Object.keys(from);\n\n for (var i = 0; i < keys.length; i++) {\n key = keys[i]; // in case the object is already observed...\n\n if (key === '__ob__') {\n continue;\n }\n\n toVal = to[key];\n fromVal = from[key];\n\n if (!hasOwn(to, key)) {\n set(to, key, fromVal);\n } else if (toVal !== fromVal && isPlainObject(toVal) && isPlainObject(fromVal)) {\n mergeData(toVal, fromVal);\n }\n }\n\n return to;\n}\n/**\n * Data\n */\n\n\nfunction mergeDataOrFn(parentVal, childVal, vm) {\n if (!vm) {\n // in a Vue.extend merge, both should be functions\n if (!childVal) {\n return parentVal;\n }\n\n if (!parentVal) {\n return childVal;\n } // when parentVal & childVal are both present,\n // we need to return a function that returns the\n // merged result of both functions... no need to\n // check if parentVal is a function here because\n // it has to be a function to pass previous merges.\n\n\n return function mergedDataFn() {\n return mergeData(typeof childVal === 'function' ? childVal.call(this, this) : childVal, typeof parentVal === 'function' ? parentVal.call(this, this) : parentVal);\n };\n } else {\n return function mergedInstanceDataFn() {\n // instance merge\n var instanceData = typeof childVal === 'function' ? childVal.call(vm, vm) : childVal;\n var defaultData = typeof parentVal === 'function' ? parentVal.call(vm, vm) : parentVal;\n\n if (instanceData) {\n return mergeData(instanceData, defaultData);\n } else {\n return defaultData;\n }\n };\n }\n}\n\nstrats.data = function (parentVal, childVal, vm) {\n if (!vm) {\n if (childVal && typeof childVal !== 'function') {\n process.env.NODE_ENV !== 'production' && warn('The \"data\" option should be a function ' + 'that returns a per-instance value in component ' + 'definitions.', vm);\n return parentVal;\n }\n\n return mergeDataOrFn(parentVal, childVal);\n }\n\n return mergeDataOrFn(parentVal, childVal, vm);\n};\n/**\n * Hooks and props are merged as arrays.\n */\n\n\nfunction mergeHook(parentVal, childVal) {\n var res = childVal ? parentVal ? parentVal.concat(childVal) : Array.isArray(childVal) ? childVal : [childVal] : parentVal;\n return res ? dedupeHooks(res) : res;\n}\n\nfunction dedupeHooks(hooks) {\n var res = [];\n\n for (var i = 0; i < hooks.length; i++) {\n if (res.indexOf(hooks[i]) === -1) {\n res.push(hooks[i]);\n }\n }\n\n return res;\n}\n\nLIFECYCLE_HOOKS.forEach(function (hook) {\n strats[hook] = mergeHook;\n});\n/**\n * Assets\n *\n * When a vm is present (instance creation), we need to do\n * a three-way merge between constructor options, instance\n * options and parent options.\n */\n\nfunction mergeAssets(parentVal, childVal, vm, key) {\n var res = Object.create(parentVal || null);\n\n if (childVal) {\n process.env.NODE_ENV !== 'production' && assertObjectType(key, childVal, vm);\n return extend(res, childVal);\n } else {\n return res;\n }\n}\n\nASSET_TYPES.forEach(function (type) {\n strats[type + 's'] = mergeAssets;\n});\n/**\n * Watchers.\n *\n * Watchers hashes should not overwrite one\n * another, so we merge them as arrays.\n */\n\nstrats.watch = function (parentVal, childVal, vm, key) {\n // work around Firefox's Object.prototype.watch...\n if (parentVal === nativeWatch) {\n parentVal = undefined;\n }\n\n if (childVal === nativeWatch) {\n childVal = undefined;\n }\n /* istanbul ignore if */\n\n\n if (!childVal) {\n return Object.create(parentVal || null);\n }\n\n if (process.env.NODE_ENV !== 'production') {\n assertObjectType(key, childVal, vm);\n }\n\n if (!parentVal) {\n return childVal;\n }\n\n var ret = {};\n extend(ret, parentVal);\n\n for (var key$1 in childVal) {\n var parent = ret[key$1];\n var child = childVal[key$1];\n\n if (parent && !Array.isArray(parent)) {\n parent = [parent];\n }\n\n ret[key$1] = parent ? parent.concat(child) : Array.isArray(child) ? child : [child];\n }\n\n return ret;\n};\n/**\n * Other object hashes.\n */\n\n\nstrats.props = strats.methods = strats.inject = strats.computed = function (parentVal, childVal, vm, key) {\n if (childVal && process.env.NODE_ENV !== 'production') {\n assertObjectType(key, childVal, vm);\n }\n\n if (!parentVal) {\n return childVal;\n }\n\n var ret = Object.create(null);\n extend(ret, parentVal);\n\n if (childVal) {\n extend(ret, childVal);\n }\n\n return ret;\n};\n\nstrats.provide = mergeDataOrFn;\n/**\n * Default strategy.\n */\n\nvar defaultStrat = function (parentVal, childVal) {\n return childVal === undefined ? parentVal : childVal;\n};\n/**\n * Validate component names\n */\n\n\nfunction checkComponents(options) {\n for (var key in options.components) {\n validateComponentName(key);\n }\n}\n\nfunction validateComponentName(name) {\n if (!new RegExp(\"^[a-zA-Z][\\\\-\\\\.0-9_\" + unicodeRegExp.source + \"]*$\").test(name)) {\n warn('Invalid component name: \"' + name + '\". Component names ' + 'should conform to valid custom element name in html5 specification.');\n }\n\n if (isBuiltInTag(name) || config.isReservedTag(name)) {\n warn('Do not use built-in or reserved HTML elements as component ' + 'id: ' + name);\n }\n}\n/**\n * Ensure all props option syntax are normalized into the\n * Object-based format.\n */\n\n\nfunction normalizeProps(options, vm) {\n var props = options.props;\n\n if (!props) {\n return;\n }\n\n var res = {};\n var i, val, name;\n\n if (Array.isArray(props)) {\n i = props.length;\n\n while (i--) {\n val = props[i];\n\n if (typeof val === 'string') {\n name = camelize(val);\n res[name] = {\n type: null\n };\n } else if (process.env.NODE_ENV !== 'production') {\n warn('props must be strings when using array syntax.');\n }\n }\n } else if (isPlainObject(props)) {\n for (var key in props) {\n val = props[key];\n name = camelize(key);\n res[name] = isPlainObject(val) ? val : {\n type: val\n };\n }\n } else if (process.env.NODE_ENV !== 'production') {\n warn(\"Invalid value for option \\\"props\\\": expected an Array or an Object, \" + \"but got \" + toRawType(props) + \".\", vm);\n }\n\n options.props = res;\n}\n/**\n * Normalize all injections into Object-based format\n */\n\n\nfunction normalizeInject(options, vm) {\n var inject = options.inject;\n\n if (!inject) {\n return;\n }\n\n var normalized = options.inject = {};\n\n if (Array.isArray(inject)) {\n for (var i = 0; i < inject.length; i++) {\n normalized[inject[i]] = {\n from: inject[i]\n };\n }\n } else if (isPlainObject(inject)) {\n for (var key in inject) {\n var val = inject[key];\n normalized[key] = isPlainObject(val) ? extend({\n from: key\n }, val) : {\n from: val\n };\n }\n } else if (process.env.NODE_ENV !== 'production') {\n warn(\"Invalid value for option \\\"inject\\\": expected an Array or an Object, \" + \"but got \" + toRawType(inject) + \".\", vm);\n }\n}\n/**\n * Normalize raw function directives into object format.\n */\n\n\nfunction normalizeDirectives(options) {\n var dirs = options.directives;\n\n if (dirs) {\n for (var key in dirs) {\n var def$$1 = dirs[key];\n\n if (typeof def$$1 === 'function') {\n dirs[key] = {\n bind: def$$1,\n update: def$$1\n };\n }\n }\n }\n}\n\nfunction assertObjectType(name, value, vm) {\n if (!isPlainObject(value)) {\n warn(\"Invalid value for option \\\"\" + name + \"\\\": expected an Object, \" + \"but got \" + toRawType(value) + \".\", vm);\n }\n}\n/**\n * Merge two option objects into a new one.\n * Core utility used in both instantiation and inheritance.\n */\n\n\nfunction mergeOptions(parent, child, vm) {\n if (process.env.NODE_ENV !== 'production') {\n checkComponents(child);\n }\n\n if (typeof child === 'function') {\n child = child.options;\n }\n\n normalizeProps(child, vm);\n normalizeInject(child, vm);\n normalizeDirectives(child); // Apply extends and mixins on the child options,\n // but only if it is a raw options object that isn't\n // the result of another mergeOptions call.\n // Only merged options has the _base property.\n\n if (!child._base) {\n if (child.extends) {\n parent = mergeOptions(parent, child.extends, vm);\n }\n\n if (child.mixins) {\n for (var i = 0, l = child.mixins.length; i < l; i++) {\n parent = mergeOptions(parent, child.mixins[i], vm);\n }\n }\n }\n\n var options = {};\n var key;\n\n for (key in parent) {\n mergeField(key);\n }\n\n for (key in child) {\n if (!hasOwn(parent, key)) {\n mergeField(key);\n }\n }\n\n function mergeField(key) {\n var strat = strats[key] || defaultStrat;\n options[key] = strat(parent[key], child[key], vm, key);\n }\n\n return options;\n}\n/**\n * Resolve an asset.\n * This function is used because child instances need access\n * to assets defined in its ancestor chain.\n */\n\n\nfunction resolveAsset(options, type, id, warnMissing) {\n /* istanbul ignore if */\n if (typeof id !== 'string') {\n return;\n }\n\n var assets = options[type]; // check local registration variations first\n\n if (hasOwn(assets, id)) {\n return assets[id];\n }\n\n var camelizedId = camelize(id);\n\n if (hasOwn(assets, camelizedId)) {\n return assets[camelizedId];\n }\n\n var PascalCaseId = capitalize(camelizedId);\n\n if (hasOwn(assets, PascalCaseId)) {\n return assets[PascalCaseId];\n } // fallback to prototype chain\n\n\n var res = assets[id] || assets[camelizedId] || assets[PascalCaseId];\n\n if (process.env.NODE_ENV !== 'production' && warnMissing && !res) {\n warn('Failed to resolve ' + type.slice(0, -1) + ': ' + id, options);\n }\n\n return res;\n}\n/* */\n\n\nfunction validateProp(key, propOptions, propsData, vm) {\n var prop = propOptions[key];\n var absent = !hasOwn(propsData, key);\n var value = propsData[key]; // boolean casting\n\n var booleanIndex = getTypeIndex(Boolean, prop.type);\n\n if (booleanIndex > -1) {\n if (absent && !hasOwn(prop, 'default')) {\n value = false;\n } else if (value === '' || value === hyphenate(key)) {\n // only cast empty string / same name to boolean if\n // boolean has higher priority\n var stringIndex = getTypeIndex(String, prop.type);\n\n if (stringIndex < 0 || booleanIndex < stringIndex) {\n value = true;\n }\n }\n } // check default value\n\n\n if (value === undefined) {\n value = getPropDefaultValue(vm, prop, key); // since the default value is a fresh copy,\n // make sure to observe it.\n\n var prevShouldObserve = shouldObserve;\n toggleObserving(true);\n observe(value);\n toggleObserving(prevShouldObserve);\n }\n\n if (process.env.NODE_ENV !== 'production' && // skip validation for weex recycle-list child component props\n !false) {\n assertProp(prop, key, value, vm, absent);\n }\n\n return value;\n}\n/**\n * Get the default value of a prop.\n */\n\n\nfunction getPropDefaultValue(vm, prop, key) {\n // no default, return undefined\n if (!hasOwn(prop, 'default')) {\n return undefined;\n }\n\n var def = prop.default; // warn against non-factory defaults for Object & Array\n\n if (process.env.NODE_ENV !== 'production' && isObject(def)) {\n warn('Invalid default value for prop \"' + key + '\": ' + 'Props with type Object/Array must use a factory function ' + 'to return the default value.', vm);\n } // the raw prop value was also undefined from previous render,\n // return previous default value to avoid unnecessary watcher trigger\n\n\n if (vm && vm.$options.propsData && vm.$options.propsData[key] === undefined && vm._props[key] !== undefined) {\n return vm._props[key];\n } // call factory function for non-Function types\n // a value is Function if its prototype is function even across different execution context\n\n\n return typeof def === 'function' && getType(prop.type) !== 'Function' ? def.call(vm) : def;\n}\n/**\n * Assert whether a prop is valid.\n */\n\n\nfunction assertProp(prop, name, value, vm, absent) {\n if (prop.required && absent) {\n warn('Missing required prop: \"' + name + '\"', vm);\n return;\n }\n\n if (value == null && !prop.required) {\n return;\n }\n\n var type = prop.type;\n var valid = !type || type === true;\n var expectedTypes = [];\n\n if (type) {\n if (!Array.isArray(type)) {\n type = [type];\n }\n\n for (var i = 0; i < type.length && !valid; i++) {\n var assertedType = assertType(value, type[i], vm);\n expectedTypes.push(assertedType.expectedType || '');\n valid = assertedType.valid;\n }\n }\n\n var haveExpectedTypes = expectedTypes.some(function (t) {\n return t;\n });\n\n if (!valid && haveExpectedTypes) {\n warn(getInvalidTypeMessage(name, value, expectedTypes), vm);\n return;\n }\n\n var validator = prop.validator;\n\n if (validator) {\n if (!validator(value)) {\n warn('Invalid prop: custom validator check failed for prop \"' + name + '\".', vm);\n }\n }\n}\n\nvar simpleCheckRE = /^(String|Number|Boolean|Function|Symbol|BigInt)$/;\n\nfunction assertType(value, type, vm) {\n var valid;\n var expectedType = getType(type);\n\n if (simpleCheckRE.test(expectedType)) {\n var t = typeof value;\n valid = t === expectedType.toLowerCase(); // for primitive wrapper objects\n\n if (!valid && t === 'object') {\n valid = value instanceof type;\n }\n } else if (expectedType === 'Object') {\n valid = isPlainObject(value);\n } else if (expectedType === 'Array') {\n valid = Array.isArray(value);\n } else {\n try {\n valid = value instanceof type;\n } catch (e) {\n warn('Invalid prop type: \"' + String(type) + '\" is not a constructor', vm);\n valid = false;\n }\n }\n\n return {\n valid: valid,\n expectedType: expectedType\n };\n}\n\nvar functionTypeCheckRE = /^\\s*function (\\w+)/;\n/**\n * Use function string name to check built-in types,\n * because a simple equality check will fail when running\n * across different vms / iframes.\n */\n\nfunction getType(fn) {\n var match = fn && fn.toString().match(functionTypeCheckRE);\n return match ? match[1] : '';\n}\n\nfunction isSameType(a, b) {\n return getType(a) === getType(b);\n}\n\nfunction getTypeIndex(type, expectedTypes) {\n if (!Array.isArray(expectedTypes)) {\n return isSameType(expectedTypes, type) ? 0 : -1;\n }\n\n for (var i = 0, len = expectedTypes.length; i < len; i++) {\n if (isSameType(expectedTypes[i], type)) {\n return i;\n }\n }\n\n return -1;\n}\n\nfunction getInvalidTypeMessage(name, value, expectedTypes) {\n var message = \"Invalid prop: type check failed for prop \\\"\" + name + \"\\\".\" + \" Expected \" + expectedTypes.map(capitalize).join(', ');\n var expectedType = expectedTypes[0];\n var receivedType = toRawType(value); // check if we need to specify expected value\n\n if (expectedTypes.length === 1 && isExplicable(expectedType) && isExplicable(typeof value) && !isBoolean(expectedType, receivedType)) {\n message += \" with value \" + styleValue(value, expectedType);\n }\n\n message += \", got \" + receivedType + \" \"; // check if we need to specify received value\n\n if (isExplicable(receivedType)) {\n message += \"with value \" + styleValue(value, receivedType) + \".\";\n }\n\n return message;\n}\n\nfunction styleValue(value, type) {\n if (type === 'String') {\n return \"\\\"\" + value + \"\\\"\";\n } else if (type === 'Number') {\n return \"\" + Number(value);\n } else {\n return \"\" + value;\n }\n}\n\nvar EXPLICABLE_TYPES = ['string', 'number', 'boolean'];\n\nfunction isExplicable(value) {\n return EXPLICABLE_TYPES.some(function (elem) {\n return value.toLowerCase() === elem;\n });\n}\n\nfunction isBoolean() {\n var args = [],\n len = arguments.length;\n\n while (len--) args[len] = arguments[len];\n\n return args.some(function (elem) {\n return elem.toLowerCase() === 'boolean';\n });\n}\n/* */\n\n\nfunction handleError(err, vm, info) {\n // Deactivate deps tracking while processing error handler to avoid possible infinite rendering.\n // See: https://github.com/vuejs/vuex/issues/1505\n pushTarget();\n\n try {\n if (vm) {\n var cur = vm;\n\n while (cur = cur.$parent) {\n var hooks = cur.$options.errorCaptured;\n\n if (hooks) {\n for (var i = 0; i < hooks.length; i++) {\n try {\n var capture = hooks[i].call(cur, err, vm, info) === false;\n\n if (capture) {\n return;\n }\n } catch (e) {\n globalHandleError(e, cur, 'errorCaptured hook');\n }\n }\n }\n }\n }\n\n globalHandleError(err, vm, info);\n } finally {\n popTarget();\n }\n}\n\nfunction invokeWithErrorHandling(handler, context, args, vm, info) {\n var res;\n\n try {\n res = args ? handler.apply(context, args) : handler.call(context);\n\n if (res && !res._isVue && isPromise(res) && !res._handled) {\n res.catch(function (e) {\n return handleError(e, vm, info + \" (Promise/async)\");\n }); // issue #9511\n // avoid catch triggering multiple times when nested calls\n\n res._handled = true;\n }\n } catch (e) {\n handleError(e, vm, info);\n }\n\n return res;\n}\n\nfunction globalHandleError(err, vm, info) {\n if (config.errorHandler) {\n try {\n return config.errorHandler.call(null, err, vm, info);\n } catch (e) {\n // if the user intentionally throws the original error in the handler,\n // do not log it twice\n if (e !== err) {\n logError(e, null, 'config.errorHandler');\n }\n }\n }\n\n logError(err, vm, info);\n}\n\nfunction logError(err, vm, info) {\n if (process.env.NODE_ENV !== 'production') {\n warn(\"Error in \" + info + \": \\\"\" + err.toString() + \"\\\"\", vm);\n }\n /* istanbul ignore else */\n\n\n if ((inBrowser || inWeex) && typeof console !== 'undefined') {\n console.error(err);\n } else {\n throw err;\n }\n}\n/* */\n\n\nvar isUsingMicroTask = false;\nvar callbacks = [];\nvar pending = false;\n\nfunction flushCallbacks() {\n pending = false;\n var copies = callbacks.slice(0);\n callbacks.length = 0;\n\n for (var i = 0; i < copies.length; i++) {\n copies[i]();\n }\n} // Here we have async deferring wrappers using microtasks.\n// In 2.5 we used (macro) tasks (in combination with microtasks).\n// However, it has subtle problems when state is changed right before repaint\n// (e.g. #6813, out-in transitions).\n// Also, using (macro) tasks in event handler would cause some weird behaviors\n// that cannot be circumvented (e.g. #7109, #7153, #7546, #7834, #8109).\n// So we now use microtasks everywhere, again.\n// A major drawback of this tradeoff is that there are some scenarios\n// where microtasks have too high a priority and fire in between supposedly\n// sequential events (e.g. #4521, #6690, which have workarounds)\n// or even between bubbling of the same event (#6566).\n\n\nvar timerFunc; // The nextTick behavior leverages the microtask queue, which can be accessed\n// via either native Promise.then or MutationObserver.\n// MutationObserver has wider support, however it is seriously bugged in\n// UIWebView in iOS >= 9.3.3 when triggered in touch event handlers. It\n// completely stops working after triggering a few times... so, if native\n// Promise is available, we will use it:\n\n/* istanbul ignore next, $flow-disable-line */\n\nif (typeof Promise !== 'undefined' && isNative(Promise)) {\n var p = Promise.resolve();\n\n timerFunc = function () {\n p.then(flushCallbacks); // In problematic UIWebViews, Promise.then doesn't completely break, but\n // it can get stuck in a weird state where callbacks are pushed into the\n // microtask queue but the queue isn't being flushed, until the browser\n // needs to do some other work, e.g. handle a timer. Therefore we can\n // \"force\" the microtask queue to be flushed by adding an empty timer.\n\n if (isIOS) {\n setTimeout(noop);\n }\n };\n\n isUsingMicroTask = true;\n} else if (!isIE && typeof MutationObserver !== 'undefined' && (isNative(MutationObserver) || // PhantomJS and iOS 7.x\nMutationObserver.toString() === '[object MutationObserverConstructor]')) {\n // Use MutationObserver where native Promise is not available,\n // e.g. PhantomJS, iOS7, Android 4.4\n // (#6466 MutationObserver is unreliable in IE11)\n var counter = 1;\n var observer = new MutationObserver(flushCallbacks);\n var textNode = document.createTextNode(String(counter));\n observer.observe(textNode, {\n characterData: true\n });\n\n timerFunc = function () {\n counter = (counter + 1) % 2;\n textNode.data = String(counter);\n };\n\n isUsingMicroTask = true;\n} else if (typeof setImmediate !== 'undefined' && isNative(setImmediate)) {\n // Fallback to setImmediate.\n // Technically it leverages the (macro) task queue,\n // but it is still a better choice than setTimeout.\n timerFunc = function () {\n setImmediate(flushCallbacks);\n };\n} else {\n // Fallback to setTimeout.\n timerFunc = function () {\n setTimeout(flushCallbacks, 0);\n };\n}\n\nfunction nextTick(cb, ctx) {\n var _resolve;\n\n callbacks.push(function () {\n if (cb) {\n try {\n cb.call(ctx);\n } catch (e) {\n handleError(e, ctx, 'nextTick');\n }\n } else if (_resolve) {\n _resolve(ctx);\n }\n });\n\n if (!pending) {\n pending = true;\n timerFunc();\n } // $flow-disable-line\n\n\n if (!cb && typeof Promise !== 'undefined') {\n return new Promise(function (resolve) {\n _resolve = resolve;\n });\n }\n}\n/* */\n\n/* not type checking this file because flow doesn't play well with Proxy */\n\n\nvar initProxy;\n\nif (process.env.NODE_ENV !== 'production') {\n 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,BigInt,' + 'require' // for Webpack/Browserify\n );\n\n var warnNonPresent = function (target, key) {\n warn(\"Property or method \\\"\" + key + \"\\\" is not defined on the instance but \" + 'referenced during render. Make sure that this property is reactive, ' + 'either in the data option, or for class-based components, by ' + 'initializing the property. ' + 'See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.', target);\n };\n\n var warnReservedPrefix = function (target, key) {\n warn(\"Property \\\"\" + key + \"\\\" must be accessed with \\\"$data.\" + key + \"\\\" because \" + 'properties starting with \"$\" or \"_\" are not proxied in the Vue instance to ' + 'prevent conflicts with Vue internals. ' + 'See: https://vuejs.org/v2/api/#data', target);\n };\n\n var hasProxy = typeof Proxy !== 'undefined' && isNative(Proxy);\n\n if (hasProxy) {\n var isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta,exact');\n config.keyCodes = new Proxy(config.keyCodes, {\n set: function set(target, key, value) {\n if (isBuiltInModifier(key)) {\n warn(\"Avoid overwriting built-in modifier in config.keyCodes: .\" + key);\n return false;\n } else {\n target[key] = value;\n return true;\n }\n }\n });\n }\n\n var hasHandler = {\n has: function has(target, key) {\n var has = (key in target);\n var isAllowed = allowedGlobals(key) || typeof key === 'string' && key.charAt(0) === '_' && !(key in target.$data);\n\n if (!has && !isAllowed) {\n if (key in target.$data) {\n warnReservedPrefix(target, key);\n } else {\n warnNonPresent(target, key);\n }\n }\n\n return has || !isAllowed;\n }\n };\n var getHandler = {\n get: function get(target, key) {\n if (typeof key === 'string' && !(key in target)) {\n if (key in target.$data) {\n warnReservedPrefix(target, key);\n } else {\n warnNonPresent(target, key);\n }\n }\n\n return target[key];\n }\n };\n\n initProxy = function initProxy(vm) {\n if (hasProxy) {\n // determine which proxy handler to use\n var options = vm.$options;\n var handlers = options.render && options.render._withStripped ? getHandler : hasHandler;\n vm._renderProxy = new Proxy(vm, handlers);\n } else {\n vm._renderProxy = vm;\n }\n };\n}\n/* */\n\n\nvar seenObjects = new _Set();\n/**\n * Recursively traverse an object to evoke all converted\n * getters, so that every nested property inside the object\n * is collected as a \"deep\" dependency.\n */\n\nfunction traverse(val) {\n _traverse(val, seenObjects);\n\n seenObjects.clear();\n}\n\nfunction _traverse(val, seen) {\n var i, keys;\n var isA = Array.isArray(val);\n\n if (!isA && !isObject(val) || Object.isFrozen(val) || val instanceof VNode) {\n return;\n }\n\n if (val.__ob__) {\n var depId = val.__ob__.dep.id;\n\n if (seen.has(depId)) {\n return;\n }\n\n seen.add(depId);\n }\n\n if (isA) {\n i = val.length;\n\n while (i--) {\n _traverse(val[i], seen);\n }\n } else {\n keys = Object.keys(val);\n i = keys.length;\n\n while (i--) {\n _traverse(val[keys[i]], seen);\n }\n }\n}\n\nvar mark;\nvar measure;\n\nif (process.env.NODE_ENV !== 'production') {\n var perf = inBrowser && window.performance;\n /* istanbul ignore if */\n\n if (perf && perf.mark && perf.measure && perf.clearMarks && perf.clearMeasures) {\n mark = function (tag) {\n return perf.mark(tag);\n };\n\n measure = function (name, startTag, endTag) {\n perf.measure(name, startTag, endTag);\n perf.clearMarks(startTag);\n perf.clearMarks(endTag); // perf.clearMeasures(name)\n };\n }\n}\n/* */\n\n\nvar normalizeEvent = cached(function (name) {\n var passive = name.charAt(0) === '&';\n name = passive ? name.slice(1) : name;\n var once$$1 = name.charAt(0) === '~'; // Prefixed last, checked first\n\n name = once$$1 ? name.slice(1) : name;\n var capture = name.charAt(0) === '!';\n name = capture ? name.slice(1) : name;\n return {\n name: name,\n once: once$$1,\n capture: capture,\n passive: passive\n };\n});\n\nfunction createFnInvoker(fns, vm) {\n function invoker() {\n var arguments$1 = arguments;\n var fns = invoker.fns;\n\n if (Array.isArray(fns)) {\n var cloned = fns.slice();\n\n for (var i = 0; i < cloned.length; i++) {\n invokeWithErrorHandling(cloned[i], null, arguments$1, vm, \"v-on handler\");\n }\n } else {\n // return handler return value for single handlers\n return invokeWithErrorHandling(fns, null, arguments, vm, \"v-on handler\");\n }\n }\n\n invoker.fns = fns;\n return invoker;\n}\n\nfunction updateListeners(on, oldOn, add, remove$$1, createOnceHandler, vm) {\n var name, def$$1, cur, old, event;\n\n for (name in on) {\n def$$1 = cur = on[name];\n old = oldOn[name];\n event = normalizeEvent(name);\n\n if (isUndef(cur)) {\n process.env.NODE_ENV !== 'production' && warn(\"Invalid handler for event \\\"\" + event.name + \"\\\": got \" + String(cur), vm);\n } else if (isUndef(old)) {\n if (isUndef(cur.fns)) {\n cur = on[name] = createFnInvoker(cur, vm);\n }\n\n if (isTrue(event.once)) {\n cur = on[name] = createOnceHandler(event.name, cur, event.capture);\n }\n\n add(event.name, cur, event.capture, event.passive, event.params);\n } else if (cur !== old) {\n old.fns = cur;\n on[name] = old;\n }\n }\n\n for (name in oldOn) {\n if (isUndef(on[name])) {\n event = normalizeEvent(name);\n remove$$1(event.name, oldOn[name], event.capture);\n }\n }\n}\n/* */\n\n\nfunction mergeVNodeHook(def, hookKey, hook) {\n if (def instanceof VNode) {\n def = def.data.hook || (def.data.hook = {});\n }\n\n var invoker;\n var oldHook = def[hookKey];\n\n function wrappedHook() {\n hook.apply(this, arguments); // important: remove merged hook to ensure it's called only once\n // and prevent memory leak\n\n remove(invoker.fns, wrappedHook);\n }\n\n if (isUndef(oldHook)) {\n // no existing hook\n invoker = createFnInvoker([wrappedHook]);\n } else {\n /* istanbul ignore if */\n if (isDef(oldHook.fns) && isTrue(oldHook.merged)) {\n // already a merged invoker\n invoker = oldHook;\n invoker.fns.push(wrappedHook);\n } else {\n // existing plain hook\n invoker = createFnInvoker([oldHook, wrappedHook]);\n }\n }\n\n invoker.merged = true;\n def[hookKey] = invoker;\n}\n/* */\n\n\nfunction extractPropsFromVNodeData(data, Ctor, tag) {\n // we are only extracting raw values here.\n // validation and default values are handled in the child\n // component itself.\n var propOptions = Ctor.options.props;\n\n if (isUndef(propOptions)) {\n return;\n }\n\n var res = {};\n var attrs = data.attrs;\n var props = data.props;\n\n if (isDef(attrs) || isDef(props)) {\n for (var key in propOptions) {\n var altKey = hyphenate(key);\n\n if (process.env.NODE_ENV !== 'production') {\n var keyInLowerCase = key.toLowerCase();\n\n if (key !== keyInLowerCase && attrs && hasOwn(attrs, keyInLowerCase)) {\n 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 + \"\\\".\");\n }\n }\n\n checkProp(res, props, key, altKey, true) || checkProp(res, attrs, key, altKey, false);\n }\n }\n\n return res;\n}\n\nfunction checkProp(res, hash, key, altKey, preserve) {\n if (isDef(hash)) {\n if (hasOwn(hash, key)) {\n res[key] = hash[key];\n\n if (!preserve) {\n delete hash[key];\n }\n\n return true;\n } else if (hasOwn(hash, altKey)) {\n res[key] = hash[altKey];\n\n if (!preserve) {\n delete hash[altKey];\n }\n\n return true;\n }\n }\n\n return false;\n}\n/* */\n// The template compiler attempts to minimize the need for normalization by\n// statically analyzing the template at compile time.\n//\n// For plain HTML markup, normalization can be completely skipped because the\n// generated render function is guaranteed to return Array<VNode>. There are\n// two cases where extra normalization is needed:\n// 1. When the children contains components - because a functional component\n// may return an Array instead of a single root. In this case, just a simple\n// normalization is needed - if any child is an Array, we flatten the whole\n// thing with Array.prototype.concat. It is guaranteed to be only 1-level deep\n// because functional components already normalize their own children.\n\n\nfunction simpleNormalizeChildren(children) {\n for (var i = 0; i < children.length; i++) {\n if (Array.isArray(children[i])) {\n return Array.prototype.concat.apply([], children);\n }\n }\n\n return children;\n} // 2. When the children contains constructs that always generated nested Arrays,\n// e.g. <template>, <slot>, v-for, or when the children is provided by user\n// with hand-written render functions / JSX. In such cases a full normalization\n// is needed to cater to all possible types of children values.\n\n\nfunction normalizeChildren(children) {\n return isPrimitive(children) ? [createTextVNode(children)] : Array.isArray(children) ? normalizeArrayChildren(children) : undefined;\n}\n\nfunction isTextNode(node) {\n return isDef(node) && isDef(node.text) && isFalse(node.isComment);\n}\n\nfunction normalizeArrayChildren(children, nestedIndex) {\n var res = [];\n var i, c, lastIndex, last;\n\n for (i = 0; i < children.length; i++) {\n c = children[i];\n\n if (isUndef(c) || typeof c === 'boolean') {\n continue;\n }\n\n lastIndex = res.length - 1;\n last = res[lastIndex]; // nested\n\n if (Array.isArray(c)) {\n if (c.length > 0) {\n c = normalizeArrayChildren(c, (nestedIndex || '') + \"_\" + i); // merge adjacent text nodes\n\n if (isTextNode(c[0]) && isTextNode(last)) {\n res[lastIndex] = createTextVNode(last.text + c[0].text);\n c.shift();\n }\n\n res.push.apply(res, c);\n }\n } else if (isPrimitive(c)) {\n if (isTextNode(last)) {\n // merge adjacent text nodes\n // this is necessary for SSR hydration because text nodes are\n // essentially merged when rendered to HTML strings\n res[lastIndex] = createTextVNode(last.text + c);\n } else if (c !== '') {\n // convert primitive to vnode\n res.push(createTextVNode(c));\n }\n } else {\n if (isTextNode(c) && isTextNode(last)) {\n // merge adjacent text nodes\n res[lastIndex] = createTextVNode(last.text + c.text);\n } else {\n // default key for nested array children (likely generated by v-for)\n if (isTrue(children._isVList) && isDef(c.tag) && isUndef(c.key) && isDef(nestedIndex)) {\n c.key = \"__vlist\" + nestedIndex + \"_\" + i + \"__\";\n }\n\n res.push(c);\n }\n }\n }\n\n return res;\n}\n/* */\n\n\nfunction initProvide(vm) {\n var provide = vm.$options.provide;\n\n if (provide) {\n vm._provided = typeof provide === 'function' ? provide.call(vm) : provide;\n }\n}\n\nfunction initInjections(vm) {\n var result = resolveInject(vm.$options.inject, vm);\n\n if (result) {\n toggleObserving(false);\n Object.keys(result).forEach(function (key) {\n /* istanbul ignore else */\n if (process.env.NODE_ENV !== 'production') {\n defineReactive$$1(vm, key, result[key], function () {\n warn(\"Avoid mutating an injected value directly since the changes will be \" + \"overwritten whenever the provided component re-renders. \" + \"injection being mutated: \\\"\" + key + \"\\\"\", vm);\n });\n } else {\n defineReactive$$1(vm, key, result[key]);\n }\n });\n toggleObserving(true);\n }\n}\n\nfunction resolveInject(inject, vm) {\n if (inject) {\n // inject is :any because flow is not smart enough to figure out cached\n var result = Object.create(null);\n var keys = hasSymbol ? Reflect.ownKeys(inject) : Object.keys(inject);\n\n for (var i = 0; i < keys.length; i++) {\n var key = keys[i]; // #6574 in case the inject object is observed...\n\n if (key === '__ob__') {\n continue;\n }\n\n var provideKey = inject[key].from;\n var source = vm;\n\n while (source) {\n if (source._provided && hasOwn(source._provided, provideKey)) {\n result[key] = source._provided[provideKey];\n break;\n }\n\n source = source.$parent;\n }\n\n if (!source) {\n if ('default' in inject[key]) {\n var provideDefault = inject[key].default;\n result[key] = typeof provideDefault === 'function' ? provideDefault.call(vm) : provideDefault;\n } else if (process.env.NODE_ENV !== 'production') {\n warn(\"Injection \\\"\" + key + \"\\\" not found\", vm);\n }\n }\n }\n\n return result;\n }\n}\n/* */\n\n/**\n * Runtime helper for resolving raw children VNodes into a slot object.\n */\n\n\nfunction resolveSlots(children, context) {\n if (!children || !children.length) {\n return {};\n }\n\n var slots = {};\n\n for (var i = 0, l = children.length; i < l; i++) {\n var child = children[i];\n var data = child.data; // remove slot attribute if the node is resolved as a Vue slot node\n\n if (data && data.attrs && data.attrs.slot) {\n delete data.attrs.slot;\n } // named slots should only be respected if the vnode was rendered in the\n // same context.\n\n\n if ((child.context === context || child.fnContext === context) && data && data.slot != null) {\n var name = data.slot;\n var slot = slots[name] || (slots[name] = []);\n\n if (child.tag === 'template') {\n slot.push.apply(slot, child.children || []);\n } else {\n slot.push(child);\n }\n } else {\n (slots.default || (slots.default = [])).push(child);\n }\n } // ignore slots that contains only whitespace\n\n\n for (var name$1 in slots) {\n if (slots[name$1].every(isWhitespace)) {\n delete slots[name$1];\n }\n }\n\n return slots;\n}\n\nfunction isWhitespace(node) {\n return node.isComment && !node.asyncFactory || node.text === ' ';\n}\n/* */\n\n\nfunction isAsyncPlaceholder(node) {\n return node.isComment && node.asyncFactory;\n}\n/* */\n\n\nfunction normalizeScopedSlots(slots, normalSlots, prevSlots) {\n var res;\n var hasNormalSlots = Object.keys(normalSlots).length > 0;\n var isStable = slots ? !!slots.$stable : !hasNormalSlots;\n var key = slots && slots.$key;\n\n if (!slots) {\n res = {};\n } else if (slots._normalized) {\n // fast path 1: child component re-render only, parent did not change\n return slots._normalized;\n } else if (isStable && prevSlots && prevSlots !== emptyObject && key === prevSlots.$key && !hasNormalSlots && !prevSlots.$hasNormal) {\n // fast path 2: stable scoped slots w/ no normal slots to proxy,\n // only need to normalize once\n return prevSlots;\n } else {\n res = {};\n\n for (var key$1 in slots) {\n if (slots[key$1] && key$1[0] !== '$') {\n res[key$1] = normalizeScopedSlot(normalSlots, key$1, slots[key$1]);\n }\n }\n } // expose normal slots on scopedSlots\n\n\n for (var key$2 in normalSlots) {\n if (!(key$2 in res)) {\n res[key$2] = proxyNormalSlot(normalSlots, key$2);\n }\n } // avoriaz seems to mock a non-extensible $scopedSlots object\n // and when that is passed down this would cause an error\n\n\n if (slots && Object.isExtensible(slots)) {\n slots._normalized = res;\n }\n\n def(res, '$stable', isStable);\n def(res, '$key', key);\n def(res, '$hasNormal', hasNormalSlots);\n return res;\n}\n\nfunction normalizeScopedSlot(normalSlots, key, fn) {\n var normalized = function () {\n var res = arguments.length ? fn.apply(null, arguments) : fn({});\n res = res && typeof res === 'object' && !Array.isArray(res) ? [res] // single vnode\n : normalizeChildren(res);\n var vnode = res && res[0];\n return res && (!vnode || res.length === 1 && vnode.isComment && !isAsyncPlaceholder(vnode) // #9658, #10391\n ) ? undefined : res;\n }; // this is a slot using the new v-slot syntax without scope. although it is\n // compiled as a scoped slot, render fn users would expect it to be present\n // on this.$slots because the usage is semantically a normal slot.\n\n\n if (fn.proxy) {\n Object.defineProperty(normalSlots, key, {\n get: normalized,\n enumerable: true,\n configurable: true\n });\n }\n\n return normalized;\n}\n\nfunction proxyNormalSlot(slots, key) {\n return function () {\n return slots[key];\n };\n}\n/* */\n\n/**\n * Runtime helper for rendering v-for lists.\n */\n\n\nfunction renderList(val, render) {\n var ret, i, l, keys, key;\n\n if (Array.isArray(val) || typeof val === 'string') {\n ret = new Array(val.length);\n\n for (i = 0, l = val.length; i < l; i++) {\n ret[i] = render(val[i], i);\n }\n } else if (typeof val === 'number') {\n ret = new Array(val);\n\n for (i = 0; i < val; i++) {\n ret[i] = render(i + 1, i);\n }\n } else if (isObject(val)) {\n if (hasSymbol && val[Symbol.iterator]) {\n ret = [];\n var iterator = val[Symbol.iterator]();\n var result = iterator.next();\n\n while (!result.done) {\n ret.push(render(result.value, ret.length));\n result = iterator.next();\n }\n } else {\n keys = Object.keys(val);\n ret = new Array(keys.length);\n\n for (i = 0, l = keys.length; i < l; i++) {\n key = keys[i];\n ret[i] = render(val[key], key, i);\n }\n }\n }\n\n if (!isDef(ret)) {\n ret = [];\n }\n\n ret._isVList = true;\n return ret;\n}\n/* */\n\n/**\n * Runtime helper for rendering <slot>\n */\n\n\nfunction renderSlot(name, fallbackRender, props, bindObject) {\n var scopedSlotFn = this.$scopedSlots[name];\n var nodes;\n\n if (scopedSlotFn) {\n // scoped slot\n props = props || {};\n\n if (bindObject) {\n if (process.env.NODE_ENV !== 'production' && !isObject(bindObject)) {\n warn('slot v-bind without argument expects an Object', this);\n }\n\n props = extend(extend({}, bindObject), props);\n }\n\n nodes = scopedSlotFn(props) || (typeof fallbackRender === 'function' ? fallbackRender() : fallbackRender);\n } else {\n nodes = this.$slots[name] || (typeof fallbackRender === 'function' ? fallbackRender() : fallbackRender);\n }\n\n var target = props && props.slot;\n\n if (target) {\n return this.$createElement('template', {\n slot: target\n }, nodes);\n } else {\n return nodes;\n }\n}\n/* */\n\n/**\n * Runtime helper for resolving filters\n */\n\n\nfunction resolveFilter(id) {\n return resolveAsset(this.$options, 'filters', id, true) || identity;\n}\n/* */\n\n\nfunction isKeyNotMatch(expect, actual) {\n if (Array.isArray(expect)) {\n return expect.indexOf(actual) === -1;\n } else {\n return expect !== actual;\n }\n}\n/**\n * Runtime helper for checking keyCodes from config.\n * exposed as Vue.prototype._k\n * passing in eventKeyName as last argument separately for backwards compat\n */\n\n\nfunction checkKeyCodes(eventKeyCode, key, builtInKeyCode, eventKeyName, builtInKeyName) {\n var mappedKeyCode = config.keyCodes[key] || builtInKeyCode;\n\n if (builtInKeyName && eventKeyName && !config.keyCodes[key]) {\n return isKeyNotMatch(builtInKeyName, eventKeyName);\n } else if (mappedKeyCode) {\n return isKeyNotMatch(mappedKeyCode, eventKeyCode);\n } else if (eventKeyName) {\n return hyphenate(eventKeyName) !== key;\n }\n\n return eventKeyCode === undefined;\n}\n/* */\n\n/**\n * Runtime helper for merging v-bind=\"object\" into a VNode's data.\n */\n\n\nfunction bindObjectProps(data, tag, value, asProp, isSync) {\n if (value) {\n if (!isObject(value)) {\n process.env.NODE_ENV !== 'production' && warn('v-bind without argument expects an Object or Array value', this);\n } else {\n if (Array.isArray(value)) {\n value = toObject(value);\n }\n\n var hash;\n\n var loop = function (key) {\n if (key === 'class' || key === 'style' || isReservedAttribute(key)) {\n hash = data;\n } else {\n var type = data.attrs && data.attrs.type;\n hash = asProp || config.mustUseProp(tag, type, key) ? data.domProps || (data.domProps = {}) : data.attrs || (data.attrs = {});\n }\n\n var camelizedKey = camelize(key);\n var hyphenatedKey = hyphenate(key);\n\n if (!(camelizedKey in hash) && !(hyphenatedKey in hash)) {\n hash[key] = value[key];\n\n if (isSync) {\n var on = data.on || (data.on = {});\n\n on[\"update:\" + key] = function ($event) {\n value[key] = $event;\n };\n }\n }\n };\n\n for (var key in value) loop(key);\n }\n }\n\n return data;\n}\n/* */\n\n/**\n * Runtime helper for rendering static trees.\n */\n\n\nfunction renderStatic(index, isInFor) {\n var cached = this._staticTrees || (this._staticTrees = []);\n var tree = cached[index]; // if has already-rendered static tree and not inside v-for,\n // we can reuse the same tree.\n\n if (tree && !isInFor) {\n return tree;\n } // otherwise, render a fresh tree.\n\n\n tree = cached[index] = this.$options.staticRenderFns[index].call(this._renderProxy, null, this // for render fns generated for functional component templates\n );\n markStatic(tree, \"__static__\" + index, false);\n return tree;\n}\n/**\n * Runtime helper for v-once.\n * Effectively it means marking the node as static with a unique key.\n */\n\n\nfunction markOnce(tree, index, key) {\n markStatic(tree, \"__once__\" + index + (key ? \"_\" + key : \"\"), true);\n return tree;\n}\n\nfunction markStatic(tree, key, isOnce) {\n if (Array.isArray(tree)) {\n for (var i = 0; i < tree.length; i++) {\n if (tree[i] && typeof tree[i] !== 'string') {\n markStaticNode(tree[i], key + \"_\" + i, isOnce);\n }\n }\n } else {\n markStaticNode(tree, key, isOnce);\n }\n}\n\nfunction markStaticNode(node, key, isOnce) {\n node.isStatic = true;\n node.key = key;\n node.isOnce = isOnce;\n}\n/* */\n\n\nfunction bindObjectListeners(data, value) {\n if (value) {\n if (!isPlainObject(value)) {\n process.env.NODE_ENV !== 'production' && warn('v-on without argument expects an Object value', this);\n } else {\n var on = data.on = data.on ? extend({}, data.on) : {};\n\n for (var key in value) {\n var existing = on[key];\n var ours = value[key];\n on[key] = existing ? [].concat(existing, ours) : ours;\n }\n }\n }\n\n return data;\n}\n/* */\n\n\nfunction resolveScopedSlots(fns, // see flow/vnode\nres, // the following are added in 2.6\nhasDynamicKeys, contentHashKey) {\n res = res || {\n $stable: !hasDynamicKeys\n };\n\n for (var i = 0; i < fns.length; i++) {\n var slot = fns[i];\n\n if (Array.isArray(slot)) {\n resolveScopedSlots(slot, res, hasDynamicKeys);\n } else if (slot) {\n // marker for reverse proxying v-slot without scope on this.$slots\n if (slot.proxy) {\n slot.fn.proxy = true;\n }\n\n res[slot.key] = slot.fn;\n }\n }\n\n if (contentHashKey) {\n res.$key = contentHashKey;\n }\n\n return res;\n}\n/* */\n\n\nfunction bindDynamicKeys(baseObj, values) {\n for (var i = 0; i < values.length; i += 2) {\n var key = values[i];\n\n if (typeof key === 'string' && key) {\n baseObj[values[i]] = values[i + 1];\n } else if (process.env.NODE_ENV !== 'production' && key !== '' && key !== null) {\n // null is a special value for explicitly removing a binding\n warn(\"Invalid value for dynamic directive argument (expected string or null): \" + key, this);\n }\n }\n\n return baseObj;\n} // helper to dynamically append modifier runtime markers to event names.\n// ensure only append when value is already string, otherwise it will be cast\n// to string and cause the type check to miss.\n\n\nfunction prependModifier(value, symbol) {\n return typeof value === 'string' ? symbol + value : value;\n}\n/* */\n\n\nfunction installRenderHelpers(target) {\n target._o = markOnce;\n target._n = toNumber;\n target._s = toString;\n target._l = renderList;\n target._t = renderSlot;\n target._q = looseEqual;\n target._i = looseIndexOf;\n target._m = renderStatic;\n target._f = resolveFilter;\n target._k = checkKeyCodes;\n target._b = bindObjectProps;\n target._v = createTextVNode;\n target._e = createEmptyVNode;\n target._u = resolveScopedSlots;\n target._g = bindObjectListeners;\n target._d = bindDynamicKeys;\n target._p = prependModifier;\n}\n/* */\n\n\nfunction FunctionalRenderContext(data, props, children, parent, Ctor) {\n var this$1 = this;\n var options = Ctor.options; // ensure the createElement function in functional components\n // gets a unique context - this is necessary for correct named slot check\n\n var contextVm;\n\n if (hasOwn(parent, '_uid')) {\n contextVm = Object.create(parent); // $flow-disable-line\n\n contextVm._original = parent;\n } else {\n // the context vm passed in is a functional context as well.\n // in this case we want to make sure we are able to get a hold to the\n // real context instance.\n contextVm = parent; // $flow-disable-line\n\n parent = parent._original;\n }\n\n var isCompiled = isTrue(options._compiled);\n var needNormalization = !isCompiled;\n this.data = data;\n this.props = props;\n this.children = children;\n this.parent = parent;\n this.listeners = data.on || emptyObject;\n this.injections = resolveInject(options.inject, parent);\n\n this.slots = function () {\n if (!this$1.$slots) {\n normalizeScopedSlots(data.scopedSlots, this$1.$slots = resolveSlots(children, parent));\n }\n\n return this$1.$slots;\n };\n\n Object.defineProperty(this, 'scopedSlots', {\n enumerable: true,\n get: function get() {\n return normalizeScopedSlots(data.scopedSlots, this.slots());\n }\n }); // support for compiled functional template\n\n if (isCompiled) {\n // exposing $options for renderStatic()\n this.$options = options; // pre-resolve slots for renderSlot()\n\n this.$slots = this.slots();\n this.$scopedSlots = normalizeScopedSlots(data.scopedSlots, this.$slots);\n }\n\n if (options._scopeId) {\n this._c = function (a, b, c, d) {\n var vnode = createElement(contextVm, a, b, c, d, needNormalization);\n\n if (vnode && !Array.isArray(vnode)) {\n vnode.fnScopeId = options._scopeId;\n vnode.fnContext = parent;\n }\n\n return vnode;\n };\n } else {\n this._c = function (a, b, c, d) {\n return createElement(contextVm, a, b, c, d, needNormalization);\n };\n }\n}\n\ninstallRenderHelpers(FunctionalRenderContext.prototype);\n\nfunction createFunctionalComponent(Ctor, propsData, data, contextVm, children) {\n var options = Ctor.options;\n var props = {};\n var propOptions = options.props;\n\n if (isDef(propOptions)) {\n for (var key in propOptions) {\n props[key] = validateProp(key, propOptions, propsData || emptyObject);\n }\n } else {\n if (isDef(data.attrs)) {\n mergeProps(props, data.attrs);\n }\n\n if (isDef(data.props)) {\n mergeProps(props, data.props);\n }\n }\n\n var renderContext = new FunctionalRenderContext(data, props, children, contextVm, Ctor);\n var vnode = options.render.call(null, renderContext._c, renderContext);\n\n if (vnode instanceof VNode) {\n return cloneAndMarkFunctionalResult(vnode, data, renderContext.parent, options, renderContext);\n } else if (Array.isArray(vnode)) {\n var vnodes = normalizeChildren(vnode) || [];\n var res = new Array(vnodes.length);\n\n for (var i = 0; i < vnodes.length; i++) {\n res[i] = cloneAndMarkFunctionalResult(vnodes[i], data, renderContext.parent, options, renderContext);\n }\n\n return res;\n }\n}\n\nfunction cloneAndMarkFunctionalResult(vnode, data, contextVm, options, renderContext) {\n // #7817 clone node before setting fnContext, otherwise if the node is reused\n // (e.g. it was from a cached normal slot) the fnContext causes named slots\n // that should not be matched to match.\n var clone = cloneVNode(vnode);\n clone.fnContext = contextVm;\n clone.fnOptions = options;\n\n if (process.env.NODE_ENV !== 'production') {\n (clone.devtoolsMeta = clone.devtoolsMeta || {}).renderContext = renderContext;\n }\n\n if (data.slot) {\n (clone.data || (clone.data = {})).slot = data.slot;\n }\n\n return clone;\n}\n\nfunction mergeProps(to, from) {\n for (var key in from) {\n to[camelize(key)] = from[key];\n }\n}\n/* */\n\n/* */\n\n/* */\n\n/* */\n// inline hooks to be invoked on component VNodes during patch\n\n\nvar componentVNodeHooks = {\n init: function init(vnode, hydrating) {\n if (vnode.componentInstance && !vnode.componentInstance._isDestroyed && vnode.data.keepAlive) {\n // kept-alive components, treat as a patch\n var mountedNode = vnode; // work around flow\n\n componentVNodeHooks.prepatch(mountedNode, mountedNode);\n } else {\n var child = vnode.componentInstance = createComponentInstanceForVnode(vnode, activeInstance);\n child.$mount(hydrating ? vnode.elm : undefined, hydrating);\n }\n },\n prepatch: function prepatch(oldVnode, vnode) {\n var options = vnode.componentOptions;\n var child = vnode.componentInstance = oldVnode.componentInstance;\n updateChildComponent(child, options.propsData, // updated props\n options.listeners, // updated listeners\n vnode, // new parent vnode\n options.children // new children\n );\n },\n insert: function insert(vnode) {\n var context = vnode.context;\n var componentInstance = vnode.componentInstance;\n\n if (!componentInstance._isMounted) {\n componentInstance._isMounted = true;\n callHook(componentInstance, 'mounted');\n }\n\n if (vnode.data.keepAlive) {\n if (context._isMounted) {\n // vue-router#1212\n // During updates, a kept-alive component's child components may\n // change, so directly walking the tree here may call activated hooks\n // on incorrect children. Instead we push them into a queue which will\n // be processed after the whole patch process ended.\n queueActivatedComponent(componentInstance);\n } else {\n activateChildComponent(componentInstance, true\n /* direct */\n );\n }\n }\n },\n destroy: function destroy(vnode) {\n var componentInstance = vnode.componentInstance;\n\n if (!componentInstance._isDestroyed) {\n if (!vnode.data.keepAlive) {\n componentInstance.$destroy();\n } else {\n deactivateChildComponent(componentInstance, true\n /* direct */\n );\n }\n }\n }\n};\nvar hooksToMerge = Object.keys(componentVNodeHooks);\n\nfunction createComponent(Ctor, data, context, children, tag) {\n if (isUndef(Ctor)) {\n return;\n }\n\n var baseCtor = context.$options._base; // plain options object: turn it into a constructor\n\n if (isObject(Ctor)) {\n Ctor = baseCtor.extend(Ctor);\n } // if at this stage it's not a constructor or an async component factory,\n // reject.\n\n\n if (typeof Ctor !== 'function') {\n if (process.env.NODE_ENV !== 'production') {\n warn(\"Invalid Component definition: \" + String(Ctor), context);\n }\n\n return;\n } // async component\n\n\n var asyncFactory;\n\n if (isUndef(Ctor.cid)) {\n asyncFactory = Ctor;\n Ctor = resolveAsyncComponent(asyncFactory, baseCtor);\n\n if (Ctor === undefined) {\n // return a placeholder node for async component, which is rendered\n // as a comment node but preserves all the raw information for the node.\n // the information will be used for async server-rendering and hydration.\n return createAsyncPlaceholder(asyncFactory, data, context, children, tag);\n }\n }\n\n data = data || {}; // resolve constructor options in case global mixins are applied after\n // component constructor creation\n\n resolveConstructorOptions(Ctor); // transform component v-model data into props & events\n\n if (isDef(data.model)) {\n transformModel(Ctor.options, data);\n } // extract props\n\n\n var propsData = extractPropsFromVNodeData(data, Ctor, tag); // functional component\n\n if (isTrue(Ctor.options.functional)) {\n return createFunctionalComponent(Ctor, propsData, data, context, children);\n } // extract listeners, since these needs to be treated as\n // child component listeners instead of DOM listeners\n\n\n var listeners = data.on; // replace with listeners with .native modifier\n // so it gets processed during parent component patch.\n\n data.on = data.nativeOn;\n\n if (isTrue(Ctor.options.abstract)) {\n // abstract components do not keep anything\n // other than props & listeners & slot\n // work around flow\n var slot = data.slot;\n data = {};\n\n if (slot) {\n data.slot = slot;\n }\n } // install component management hooks onto the placeholder node\n\n\n installComponentHooks(data); // return a placeholder vnode\n\n var name = Ctor.options.name || tag;\n var vnode = new VNode(\"vue-component-\" + Ctor.cid + (name ? \"-\" + name : ''), data, undefined, undefined, undefined, context, {\n Ctor: Ctor,\n propsData: propsData,\n listeners: listeners,\n tag: tag,\n children: children\n }, asyncFactory);\n return vnode;\n}\n\nfunction createComponentInstanceForVnode( // we know it's MountedComponentVNode but flow doesn't\nvnode, // activeInstance in lifecycle state\nparent) {\n var options = {\n _isComponent: true,\n _parentVnode: vnode,\n parent: parent\n }; // check inline-template render functions\n\n var inlineTemplate = vnode.data.inlineTemplate;\n\n if (isDef(inlineTemplate)) {\n options.render = inlineTemplate.render;\n options.staticRenderFns = inlineTemplate.staticRenderFns;\n }\n\n return new vnode.componentOptions.Ctor(options);\n}\n\nfunction installComponentHooks(data) {\n var hooks = data.hook || (data.hook = {});\n\n for (var i = 0; i < hooksToMerge.length; i++) {\n var key = hooksToMerge[i];\n var existing = hooks[key];\n var toMerge = componentVNodeHooks[key];\n\n if (existing !== toMerge && !(existing && existing._merged)) {\n hooks[key] = existing ? mergeHook$1(toMerge, existing) : toMerge;\n }\n }\n}\n\nfunction mergeHook$1(f1, f2) {\n var merged = function (a, b) {\n // flow complains about extra args which is why we use any\n f1(a, b);\n f2(a, b);\n };\n\n merged._merged = true;\n return merged;\n} // transform component v-model info (value and callback) into\n// prop and event handler respectively.\n\n\nfunction transformModel(options, data) {\n var prop = options.model && options.model.prop || 'value';\n var event = options.model && options.model.event || 'input';\n (data.attrs || (data.attrs = {}))[prop] = data.model.value;\n var on = data.on || (data.on = {});\n var existing = on[event];\n var callback = data.model.callback;\n\n if (isDef(existing)) {\n if (Array.isArray(existing) ? existing.indexOf(callback) === -1 : existing !== callback) {\n on[event] = [callback].concat(existing);\n }\n } else {\n on[event] = callback;\n }\n}\n/* */\n\n\nvar SIMPLE_NORMALIZE = 1;\nvar ALWAYS_NORMALIZE = 2; // wrapper function for providing a more flexible interface\n// without getting yelled at by flow\n\nfunction createElement(context, tag, data, children, normalizationType, alwaysNormalize) {\n if (Array.isArray(data) || isPrimitive(data)) {\n normalizationType = children;\n children = data;\n data = undefined;\n }\n\n if (isTrue(alwaysNormalize)) {\n normalizationType = ALWAYS_NORMALIZE;\n }\n\n return _createElement(context, tag, data, children, normalizationType);\n}\n\nfunction _createElement(context, tag, data, children, normalizationType) {\n if (isDef(data) && isDef(data.__ob__)) {\n process.env.NODE_ENV !== 'production' && warn(\"Avoid using observed data object as vnode data: \" + JSON.stringify(data) + \"\\n\" + 'Always create fresh vnode data objects in each render!', context);\n return createEmptyVNode();\n } // object syntax in v-bind\n\n\n if (isDef(data) && isDef(data.is)) {\n tag = data.is;\n }\n\n if (!tag) {\n // in case of component :is set to falsy value\n return createEmptyVNode();\n } // warn against non-primitive key\n\n\n if (process.env.NODE_ENV !== 'production' && isDef(data) && isDef(data.key) && !isPrimitive(data.key)) {\n {\n warn('Avoid using non-primitive value as key, ' + 'use string/number value instead.', context);\n }\n } // support single function children as default scoped slot\n\n\n if (Array.isArray(children) && typeof children[0] === 'function') {\n data = data || {};\n data.scopedSlots = {\n default: children[0]\n };\n children.length = 0;\n }\n\n if (normalizationType === ALWAYS_NORMALIZE) {\n children = normalizeChildren(children);\n } else if (normalizationType === SIMPLE_NORMALIZE) {\n children = simpleNormalizeChildren(children);\n }\n\n var vnode, ns;\n\n if (typeof tag === 'string') {\n var Ctor;\n ns = context.$vnode && context.$vnode.ns || config.getTagNamespace(tag);\n\n if (config.isReservedTag(tag)) {\n // platform built-in elements\n if (process.env.NODE_ENV !== 'production' && isDef(data) && isDef(data.nativeOn) && data.tag !== 'component') {\n warn(\"The .native modifier for v-on is only valid on components but it was used on <\" + tag + \">.\", context);\n }\n\n vnode = new VNode(config.parsePlatformTagName(tag), data, children, undefined, undefined, context);\n } else if ((!data || !data.pre) && isDef(Ctor = resolveAsset(context.$options, 'components', tag))) {\n // component\n vnode = createComponent(Ctor, data, context, children, tag);\n } else {\n // unknown or unlisted namespaced elements\n // check at runtime because it may get assigned a namespace when its\n // parent normalizes children\n vnode = new VNode(tag, data, children, undefined, undefined, context);\n }\n } else {\n // direct component options / constructor\n vnode = createComponent(tag, data, context, children);\n }\n\n if (Array.isArray(vnode)) {\n return vnode;\n } else if (isDef(vnode)) {\n if (isDef(ns)) {\n applyNS(vnode, ns);\n }\n\n if (isDef(data)) {\n registerDeepBindings(data);\n }\n\n return vnode;\n } else {\n return createEmptyVNode();\n }\n}\n\nfunction applyNS(vnode, ns, force) {\n vnode.ns = ns;\n\n if (vnode.tag === 'foreignObject') {\n // use default namespace inside foreignObject\n ns = undefined;\n force = true;\n }\n\n if (isDef(vnode.children)) {\n for (var i = 0, l = vnode.children.length; i < l; i++) {\n var child = vnode.children[i];\n\n if (isDef(child.tag) && (isUndef(child.ns) || isTrue(force) && child.tag !== 'svg')) {\n applyNS(child, ns, force);\n }\n }\n }\n} // ref #5318\n// necessary to ensure parent re-render when deep bindings like :style and\n// :class are used on slot nodes\n\n\nfunction registerDeepBindings(data) {\n if (isObject(data.style)) {\n traverse(data.style);\n }\n\n if (isObject(data.class)) {\n traverse(data.class);\n }\n}\n/* */\n\n\nfunction initRender(vm) {\n vm._vnode = null; // the root of the child tree\n\n vm._staticTrees = null; // v-once cached trees\n\n var options = vm.$options;\n var parentVnode = vm.$vnode = options._parentVnode; // the placeholder node in parent tree\n\n var renderContext = parentVnode && parentVnode.context;\n vm.$slots = resolveSlots(options._renderChildren, renderContext);\n vm.$scopedSlots = emptyObject; // bind the createElement fn to this instance\n // so that we get proper render context inside it.\n // args order: tag, data, children, normalizationType, alwaysNormalize\n // internal version is used by render functions compiled from templates\n\n vm._c = function (a, b, c, d) {\n return createElement(vm, a, b, c, d, false);\n }; // normalization is always applied for the public version, used in\n // user-written render functions.\n\n\n vm.$createElement = function (a, b, c, d) {\n return createElement(vm, a, b, c, d, true);\n }; // $attrs & $listeners are exposed for easier HOC creation.\n // they need to be reactive so that HOCs using them are always updated\n\n\n var parentData = parentVnode && parentVnode.data;\n /* istanbul ignore else */\n\n if (process.env.NODE_ENV !== 'production') {\n defineReactive$$1(vm, '$attrs', parentData && parentData.attrs || emptyObject, function () {\n !isUpdatingChildComponent && warn(\"$attrs is readonly.\", vm);\n }, true);\n defineReactive$$1(vm, '$listeners', options._parentListeners || emptyObject, function () {\n !isUpdatingChildComponent && warn(\"$listeners is readonly.\", vm);\n }, true);\n } else {\n defineReactive$$1(vm, '$attrs', parentData && parentData.attrs || emptyObject, null, true);\n defineReactive$$1(vm, '$listeners', options._parentListeners || emptyObject, null, true);\n }\n}\n\nvar currentRenderingInstance = null;\n\nfunction renderMixin(Vue) {\n // install runtime convenience helpers\n installRenderHelpers(Vue.prototype);\n\n Vue.prototype.$nextTick = function (fn) {\n return nextTick(fn, this);\n };\n\n Vue.prototype._render = function () {\n var vm = this;\n var ref = vm.$options;\n var render = ref.render;\n var _parentVnode = ref._parentVnode;\n\n if (_parentVnode) {\n vm.$scopedSlots = normalizeScopedSlots(_parentVnode.data.scopedSlots, vm.$slots, vm.$scopedSlots);\n } // set parent vnode. this allows render functions to have access\n // to the data on the placeholder node.\n\n\n vm.$vnode = _parentVnode; // render self\n\n var vnode;\n\n try {\n // There's no need to maintain a stack because all render fns are called\n // separately from one another. Nested component's render fns are called\n // when parent component is patched.\n currentRenderingInstance = vm;\n vnode = render.call(vm._renderProxy, vm.$createElement);\n } catch (e) {\n handleError(e, vm, \"render\"); // return error render result,\n // or previous vnode to prevent render error causing blank component\n\n /* istanbul ignore else */\n\n if (process.env.NODE_ENV !== 'production' && vm.$options.renderError) {\n try {\n vnode = vm.$options.renderError.call(vm._renderProxy, vm.$createElement, e);\n } catch (e) {\n handleError(e, vm, \"renderError\");\n vnode = vm._vnode;\n }\n } else {\n vnode = vm._vnode;\n }\n } finally {\n currentRenderingInstance = null;\n } // if the returned array contains only a single node, allow it\n\n\n if (Array.isArray(vnode) && vnode.length === 1) {\n vnode = vnode[0];\n } // return empty vnode in case the render function errored out\n\n\n if (!(vnode instanceof VNode)) {\n if (process.env.NODE_ENV !== 'production' && Array.isArray(vnode)) {\n warn('Multiple root nodes returned from render function. Render function ' + 'should return a single root node.', vm);\n }\n\n vnode = createEmptyVNode();\n } // set parent\n\n\n vnode.parent = _parentVnode;\n return vnode;\n };\n}\n/* */\n\n\nfunction ensureCtor(comp, base) {\n if (comp.__esModule || hasSymbol && comp[Symbol.toStringTag] === 'Module') {\n comp = comp.default;\n }\n\n return isObject(comp) ? base.extend(comp) : comp;\n}\n\nfunction createAsyncPlaceholder(factory, data, context, children, tag) {\n var node = createEmptyVNode();\n node.asyncFactory = factory;\n node.asyncMeta = {\n data: data,\n context: context,\n children: children,\n tag: tag\n };\n return node;\n}\n\nfunction resolveAsyncComponent(factory, baseCtor) {\n if (isTrue(factory.error) && isDef(factory.errorComp)) {\n return factory.errorComp;\n }\n\n if (isDef(factory.resolved)) {\n return factory.resolved;\n }\n\n var owner = currentRenderingInstance;\n\n if (owner && isDef(factory.owners) && factory.owners.indexOf(owner) === -1) {\n // already pending\n factory.owners.push(owner);\n }\n\n if (isTrue(factory.loading) && isDef(factory.loadingComp)) {\n return factory.loadingComp;\n }\n\n if (owner && !isDef(factory.owners)) {\n var owners = factory.owners = [owner];\n var sync = true;\n var timerLoading = null;\n var timerTimeout = null;\n owner.$on('hook:destroyed', function () {\n return remove(owners, owner);\n });\n\n var forceRender = function (renderCompleted) {\n for (var i = 0, l = owners.length; i < l; i++) {\n owners[i].$forceUpdate();\n }\n\n if (renderCompleted) {\n owners.length = 0;\n\n if (timerLoading !== null) {\n clearTimeout(timerLoading);\n timerLoading = null;\n }\n\n if (timerTimeout !== null) {\n clearTimeout(timerTimeout);\n timerTimeout = null;\n }\n }\n };\n\n var resolve = once(function (res) {\n // cache resolved\n factory.resolved = ensureCtor(res, baseCtor); // invoke callbacks only if this is not a synchronous resolve\n // (async resolves are shimmed as synchronous during SSR)\n\n if (!sync) {\n forceRender(true);\n } else {\n owners.length = 0;\n }\n });\n var reject = once(function (reason) {\n process.env.NODE_ENV !== 'production' && warn(\"Failed to resolve async component: \" + String(factory) + (reason ? \"\\nReason: \" + reason : ''));\n\n if (isDef(factory.errorComp)) {\n factory.error = true;\n forceRender(true);\n }\n });\n var res = factory(resolve, reject);\n\n if (isObject(res)) {\n if (isPromise(res)) {\n // () => Promise\n if (isUndef(factory.resolved)) {\n res.then(resolve, reject);\n }\n } else if (isPromise(res.component)) {\n res.component.then(resolve, reject);\n\n if (isDef(res.error)) {\n factory.errorComp = ensureCtor(res.error, baseCtor);\n }\n\n if (isDef(res.loading)) {\n factory.loadingComp = ensureCtor(res.loading, baseCtor);\n\n if (res.delay === 0) {\n factory.loading = true;\n } else {\n timerLoading = setTimeout(function () {\n timerLoading = null;\n\n if (isUndef(factory.resolved) && isUndef(factory.error)) {\n factory.loading = true;\n forceRender(false);\n }\n }, res.delay || 200);\n }\n }\n\n if (isDef(res.timeout)) {\n timerTimeout = setTimeout(function () {\n timerTimeout = null;\n\n if (isUndef(factory.resolved)) {\n reject(process.env.NODE_ENV !== 'production' ? \"timeout (\" + res.timeout + \"ms)\" : null);\n }\n }, res.timeout);\n }\n }\n }\n\n sync = false; // return in case resolved synchronously\n\n return factory.loading ? factory.loadingComp : factory.resolved;\n }\n}\n/* */\n\n\nfunction getFirstComponentChild(children) {\n if (Array.isArray(children)) {\n for (var i = 0; i < children.length; i++) {\n var c = children[i];\n\n if (isDef(c) && (isDef(c.componentOptions) || isAsyncPlaceholder(c))) {\n return c;\n }\n }\n }\n}\n/* */\n\n/* */\n\n\nfunction initEvents(vm) {\n vm._events = Object.create(null);\n vm._hasHookEvent = false; // init parent attached events\n\n var listeners = vm.$options._parentListeners;\n\n if (listeners) {\n updateComponentListeners(vm, listeners);\n }\n}\n\nvar target;\n\nfunction add(event, fn) {\n target.$on(event, fn);\n}\n\nfunction remove$1(event, fn) {\n target.$off(event, fn);\n}\n\nfunction createOnceHandler(event, fn) {\n var _target = target;\n return function onceHandler() {\n var res = fn.apply(null, arguments);\n\n if (res !== null) {\n _target.$off(event, onceHandler);\n }\n };\n}\n\nfunction updateComponentListeners(vm, listeners, oldListeners) {\n target = vm;\n updateListeners(listeners, oldListeners || {}, add, remove$1, createOnceHandler, vm);\n target = undefined;\n}\n\nfunction eventsMixin(Vue) {\n var hookRE = /^hook:/;\n\n Vue.prototype.$on = function (event, fn) {\n var vm = this;\n\n if (Array.isArray(event)) {\n for (var i = 0, l = event.length; i < l; i++) {\n vm.$on(event[i], fn);\n }\n } else {\n (vm._events[event] || (vm._events[event] = [])).push(fn); // optimize hook:event cost by using a boolean flag marked at registration\n // instead of a hash lookup\n\n if (hookRE.test(event)) {\n vm._hasHookEvent = true;\n }\n }\n\n return vm;\n };\n\n Vue.prototype.$once = function (event, fn) {\n var vm = this;\n\n function on() {\n vm.$off(event, on);\n fn.apply(vm, arguments);\n }\n\n on.fn = fn;\n vm.$on(event, on);\n return vm;\n };\n\n Vue.prototype.$off = function (event, fn) {\n var vm = this; // all\n\n if (!arguments.length) {\n vm._events = Object.create(null);\n return vm;\n } // array of events\n\n\n if (Array.isArray(event)) {\n for (var i$1 = 0, l = event.length; i$1 < l; i$1++) {\n vm.$off(event[i$1], fn);\n }\n\n return vm;\n } // specific event\n\n\n var cbs = vm._events[event];\n\n if (!cbs) {\n return vm;\n }\n\n if (!fn) {\n vm._events[event] = null;\n return vm;\n } // specific handler\n\n\n var cb;\n var i = cbs.length;\n\n while (i--) {\n cb = cbs[i];\n\n if (cb === fn || cb.fn === fn) {\n cbs.splice(i, 1);\n break;\n }\n }\n\n return vm;\n };\n\n Vue.prototype.$emit = function (event) {\n var vm = this;\n\n if (process.env.NODE_ENV !== 'production') {\n var lowerCaseEvent = event.toLowerCase();\n\n if (lowerCaseEvent !== event && vm._events[lowerCaseEvent]) {\n 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 + \"\\\".\");\n }\n }\n\n var cbs = vm._events[event];\n\n if (cbs) {\n cbs = cbs.length > 1 ? toArray(cbs) : cbs;\n var args = toArray(arguments, 1);\n var info = \"event handler for \\\"\" + event + \"\\\"\";\n\n for (var i = 0, l = cbs.length; i < l; i++) {\n invokeWithErrorHandling(cbs[i], vm, args, vm, info);\n }\n }\n\n return vm;\n };\n}\n/* */\n\n\nvar activeInstance = null;\nvar isUpdatingChildComponent = false;\n\nfunction setActiveInstance(vm) {\n var prevActiveInstance = activeInstance;\n activeInstance = vm;\n return function () {\n activeInstance = prevActiveInstance;\n };\n}\n\nfunction initLifecycle(vm) {\n var options = vm.$options; // locate first non-abstract parent\n\n var parent = options.parent;\n\n if (parent && !options.abstract) {\n while (parent.$options.abstract && parent.$parent) {\n parent = parent.$parent;\n }\n\n parent.$children.push(vm);\n }\n\n vm.$parent = parent;\n vm.$root = parent ? parent.$root : vm;\n vm.$children = [];\n vm.$refs = {};\n vm._watcher = null;\n vm._inactive = null;\n vm._directInactive = false;\n vm._isMounted = false;\n vm._isDestroyed = false;\n vm._isBeingDestroyed = false;\n}\n\nfunction lifecycleMixin(Vue) {\n Vue.prototype._update = function (vnode, hydrating) {\n var vm = this;\n var prevEl = vm.$el;\n var prevVnode = vm._vnode;\n var restoreActiveInstance = setActiveInstance(vm);\n vm._vnode = vnode; // Vue.prototype.__patch__ is injected in entry points\n // based on the rendering backend used.\n\n if (!prevVnode) {\n // initial render\n vm.$el = vm.__patch__(vm.$el, vnode, hydrating, false\n /* removeOnly */\n );\n } else {\n // updates\n vm.$el = vm.__patch__(prevVnode, vnode);\n }\n\n restoreActiveInstance(); // update __vue__ reference\n\n if (prevEl) {\n prevEl.__vue__ = null;\n }\n\n if (vm.$el) {\n vm.$el.__vue__ = vm;\n } // if parent is an HOC, update its $el as well\n\n\n if (vm.$vnode && vm.$parent && vm.$vnode === vm.$parent._vnode) {\n vm.$parent.$el = vm.$el;\n } // updated hook is called by the scheduler to ensure that children are\n // updated in a parent's updated hook.\n\n };\n\n Vue.prototype.$forceUpdate = function () {\n var vm = this;\n\n if (vm._watcher) {\n vm._watcher.update();\n }\n };\n\n Vue.prototype.$destroy = function () {\n var vm = this;\n\n if (vm._isBeingDestroyed) {\n return;\n }\n\n callHook(vm, 'beforeDestroy');\n vm._isBeingDestroyed = true; // remove self from parent\n\n var parent = vm.$parent;\n\n if (parent && !parent._isBeingDestroyed && !vm.$options.abstract) {\n remove(parent.$children, vm);\n } // teardown watchers\n\n\n if (vm._watcher) {\n vm._watcher.teardown();\n }\n\n var i = vm._watchers.length;\n\n while (i--) {\n vm._watchers[i].teardown();\n } // remove reference from data ob\n // frozen object may not have observer.\n\n\n if (vm._data.__ob__) {\n vm._data.__ob__.vmCount--;\n } // call the last hook...\n\n\n vm._isDestroyed = true; // invoke destroy hooks on current rendered tree\n\n vm.__patch__(vm._vnode, null); // fire destroyed hook\n\n\n callHook(vm, 'destroyed'); // turn off all instance listeners.\n\n vm.$off(); // remove __vue__ reference\n\n if (vm.$el) {\n vm.$el.__vue__ = null;\n } // release circular reference (#6759)\n\n\n if (vm.$vnode) {\n vm.$vnode.parent = null;\n }\n };\n}\n\nfunction mountComponent(vm, el, hydrating) {\n vm.$el = el;\n\n if (!vm.$options.render) {\n vm.$options.render = createEmptyVNode;\n\n if (process.env.NODE_ENV !== 'production') {\n /* istanbul ignore if */\n if (vm.$options.template && vm.$options.template.charAt(0) !== '#' || vm.$options.el || el) {\n 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);\n } else {\n warn('Failed to mount component: template or render function not defined.', vm);\n }\n }\n }\n\n callHook(vm, 'beforeMount');\n var updateComponent;\n /* istanbul ignore if */\n\n if (process.env.NODE_ENV !== 'production' && config.performance && mark) {\n updateComponent = function () {\n var name = vm._name;\n var id = vm._uid;\n var startTag = \"vue-perf-start:\" + id;\n var endTag = \"vue-perf-end:\" + id;\n mark(startTag);\n\n var vnode = vm._render();\n\n mark(endTag);\n measure(\"vue \" + name + \" render\", startTag, endTag);\n mark(startTag);\n\n vm._update(vnode, hydrating);\n\n mark(endTag);\n measure(\"vue \" + name + \" patch\", startTag, endTag);\n };\n } else {\n updateComponent = function () {\n vm._update(vm._render(), hydrating);\n };\n } // we set this to vm._watcher inside the watcher's constructor\n // since the watcher's initial patch may call $forceUpdate (e.g. inside child\n // component's mounted hook), which relies on vm._watcher being already defined\n\n\n new Watcher(vm, updateComponent, noop, {\n before: function before() {\n if (vm._isMounted && !vm._isDestroyed) {\n callHook(vm, 'beforeUpdate');\n }\n }\n }, true\n /* isRenderWatcher */\n );\n hydrating = false; // manually mounted instance, call mounted on self\n // mounted is called for render-created child components in its inserted hook\n\n if (vm.$vnode == null) {\n vm._isMounted = true;\n callHook(vm, 'mounted');\n }\n\n return vm;\n}\n\nfunction updateChildComponent(vm, propsData, listeners, parentVnode, renderChildren) {\n if (process.env.NODE_ENV !== 'production') {\n isUpdatingChildComponent = true;\n } // determine whether component has slot children\n // we need to do this before overwriting $options._renderChildren.\n // check if there are dynamic scopedSlots (hand-written or compiled but with\n // dynamic slot names). Static scoped slots compiled from template has the\n // \"$stable\" marker.\n\n\n var newScopedSlots = parentVnode.data.scopedSlots;\n var oldScopedSlots = vm.$scopedSlots;\n var hasDynamicScopedSlot = !!(newScopedSlots && !newScopedSlots.$stable || oldScopedSlots !== emptyObject && !oldScopedSlots.$stable || newScopedSlots && vm.$scopedSlots.$key !== newScopedSlots.$key || !newScopedSlots && vm.$scopedSlots.$key); // Any static slot children from the parent may have changed during parent's\n // update. Dynamic scoped slots may also have changed. In such cases, a forced\n // update is necessary to ensure correctness.\n\n var needsForceUpdate = !!(renderChildren || // has new static slots\n vm.$options._renderChildren || // has old static slots\n hasDynamicScopedSlot);\n vm.$options._parentVnode = parentVnode;\n vm.$vnode = parentVnode; // update vm's placeholder node without re-render\n\n if (vm._vnode) {\n // update child tree's parent\n vm._vnode.parent = parentVnode;\n }\n\n vm.$options._renderChildren = renderChildren; // update $attrs and $listeners hash\n // these are also reactive so they may trigger child update if the child\n // used them during render\n\n vm.$attrs = parentVnode.data.attrs || emptyObject;\n vm.$listeners = listeners || emptyObject; // update props\n\n if (propsData && vm.$options.props) {\n toggleObserving(false);\n var props = vm._props;\n var propKeys = vm.$options._propKeys || [];\n\n for (var i = 0; i < propKeys.length; i++) {\n var key = propKeys[i];\n var propOptions = vm.$options.props; // wtf flow?\n\n props[key] = validateProp(key, propOptions, propsData, vm);\n }\n\n toggleObserving(true); // keep a copy of raw propsData\n\n vm.$options.propsData = propsData;\n } // update listeners\n\n\n listeners = listeners || emptyObject;\n var oldListeners = vm.$options._parentListeners;\n vm.$options._parentListeners = listeners;\n updateComponentListeners(vm, listeners, oldListeners); // resolve slots + force update if has children\n\n if (needsForceUpdate) {\n vm.$slots = resolveSlots(renderChildren, parentVnode.context);\n vm.$forceUpdate();\n }\n\n if (process.env.NODE_ENV !== 'production') {\n isUpdatingChildComponent = false;\n }\n}\n\nfunction isInInactiveTree(vm) {\n while (vm && (vm = vm.$parent)) {\n if (vm._inactive) {\n return true;\n }\n }\n\n return false;\n}\n\nfunction activateChildComponent(vm, direct) {\n if (direct) {\n vm._directInactive = false;\n\n if (isInInactiveTree(vm)) {\n return;\n }\n } else if (vm._directInactive) {\n return;\n }\n\n if (vm._inactive || vm._inactive === null) {\n vm._inactive = false;\n\n for (var i = 0; i < vm.$children.length; i++) {\n activateChildComponent(vm.$children[i]);\n }\n\n callHook(vm, 'activated');\n }\n}\n\nfunction deactivateChildComponent(vm, direct) {\n if (direct) {\n vm._directInactive = true;\n\n if (isInInactiveTree(vm)) {\n return;\n }\n }\n\n if (!vm._inactive) {\n vm._inactive = true;\n\n for (var i = 0; i < vm.$children.length; i++) {\n deactivateChildComponent(vm.$children[i]);\n }\n\n callHook(vm, 'deactivated');\n }\n}\n\nfunction callHook(vm, hook) {\n // #7573 disable dep collection when invoking lifecycle hooks\n pushTarget();\n var handlers = vm.$options[hook];\n var info = hook + \" hook\";\n\n if (handlers) {\n for (var i = 0, j = handlers.length; i < j; i++) {\n invokeWithErrorHandling(handlers[i], vm, null, vm, info);\n }\n }\n\n if (vm._hasHookEvent) {\n vm.$emit('hook:' + hook);\n }\n\n popTarget();\n}\n/* */\n\n\nvar MAX_UPDATE_COUNT = 100;\nvar queue = [];\nvar activatedChildren = [];\nvar has = {};\nvar circular = {};\nvar waiting = false;\nvar flushing = false;\nvar index = 0;\n/**\n * Reset the scheduler's state.\n */\n\nfunction resetSchedulerState() {\n index = queue.length = activatedChildren.length = 0;\n has = {};\n\n if (process.env.NODE_ENV !== 'production') {\n circular = {};\n }\n\n waiting = flushing = false;\n} // Async edge case #6566 requires saving the timestamp when event listeners are\n// attached. However, calling performance.now() has a perf overhead especially\n// if the page has thousands of event listeners. Instead, we take a timestamp\n// every time the scheduler flushes and use that for all event listeners\n// attached during that flush.\n\n\nvar currentFlushTimestamp = 0; // Async edge case fix requires storing an event listener's attach timestamp.\n\nvar getNow = Date.now; // Determine what event timestamp the browser is using. Annoyingly, the\n// timestamp can either be hi-res (relative to page load) or low-res\n// (relative to UNIX epoch), so in order to compare time we have to use the\n// same timestamp type when saving the flush timestamp.\n// All IE versions use low-res event timestamps, and have problematic clock\n// implementations (#9632)\n\nif (inBrowser && !isIE) {\n var performance = window.performance;\n\n if (performance && typeof performance.now === 'function' && getNow() > document.createEvent('Event').timeStamp) {\n // if the event timestamp, although evaluated AFTER the Date.now(), is\n // smaller than it, it means the event is using a hi-res timestamp,\n // and we need to use the hi-res version for event listener timestamps as\n // well.\n getNow = function () {\n return performance.now();\n };\n }\n}\n/**\n * Flush both queues and run the watchers.\n */\n\n\nfunction flushSchedulerQueue() {\n currentFlushTimestamp = getNow();\n flushing = true;\n var watcher, id; // Sort queue before flush.\n // This ensures that:\n // 1. Components are updated from parent to child. (because parent is always\n // created before the child)\n // 2. A component's user watchers are run before its render watcher (because\n // user watchers are created before the render watcher)\n // 3. If a component is destroyed during a parent component's watcher run,\n // its watchers can be skipped.\n\n queue.sort(function (a, b) {\n return a.id - b.id;\n }); // do not cache length because more watchers might be pushed\n // as we run existing watchers\n\n for (index = 0; index < queue.length; index++) {\n watcher = queue[index];\n\n if (watcher.before) {\n watcher.before();\n }\n\n id = watcher.id;\n has[id] = null;\n watcher.run(); // in dev build, check and stop circular updates.\n\n if (process.env.NODE_ENV !== 'production' && has[id] != null) {\n circular[id] = (circular[id] || 0) + 1;\n\n if (circular[id] > MAX_UPDATE_COUNT) {\n warn('You may have an infinite update loop ' + (watcher.user ? \"in watcher with expression \\\"\" + watcher.expression + \"\\\"\" : \"in a component render function.\"), watcher.vm);\n break;\n }\n }\n } // keep copies of post queues before resetting state\n\n\n var activatedQueue = activatedChildren.slice();\n var updatedQueue = queue.slice();\n resetSchedulerState(); // call component updated and activated hooks\n\n callActivatedHooks(activatedQueue);\n callUpdatedHooks(updatedQueue); // devtool hook\n\n /* istanbul ignore if */\n\n if (devtools && config.devtools) {\n devtools.emit('flush');\n }\n}\n\nfunction callUpdatedHooks(queue) {\n var i = queue.length;\n\n while (i--) {\n var watcher = queue[i];\n var vm = watcher.vm;\n\n if (vm._watcher === watcher && vm._isMounted && !vm._isDestroyed) {\n callHook(vm, 'updated');\n }\n }\n}\n/**\n * Queue a kept-alive component that was activated during patch.\n * The queue will be processed after the entire tree has been patched.\n */\n\n\nfunction queueActivatedComponent(vm) {\n // setting _inactive to false here so that a render function can\n // rely on checking whether it's in an inactive tree (e.g. router-view)\n vm._inactive = false;\n activatedChildren.push(vm);\n}\n\nfunction callActivatedHooks(queue) {\n for (var i = 0; i < queue.length; i++) {\n queue[i]._inactive = true;\n activateChildComponent(queue[i], true\n /* true */\n );\n }\n}\n/**\n * Push a watcher into the watcher queue.\n * Jobs with duplicate IDs will be skipped unless it's\n * pushed when the queue is being flushed.\n */\n\n\nfunction queueWatcher(watcher) {\n var id = watcher.id;\n\n if (has[id] == null) {\n has[id] = true;\n\n if (!flushing) {\n queue.push(watcher);\n } else {\n // if already flushing, splice the watcher based on its id\n // if already past its id, it will be run next immediately.\n var i = queue.length - 1;\n\n while (i > index && queue[i].id > watcher.id) {\n i--;\n }\n\n queue.splice(i + 1, 0, watcher);\n } // queue the flush\n\n\n if (!waiting) {\n waiting = true;\n\n if (process.env.NODE_ENV !== 'production' && !config.async) {\n flushSchedulerQueue();\n return;\n }\n\n nextTick(flushSchedulerQueue);\n }\n }\n}\n/* */\n\n\nvar uid$2 = 0;\n/**\n * A watcher parses an expression, collects dependencies,\n * and fires callback when the expression value changes.\n * This is used for both the $watch() api and directives.\n */\n\nvar Watcher = function Watcher(vm, expOrFn, cb, options, isRenderWatcher) {\n this.vm = vm;\n\n if (isRenderWatcher) {\n vm._watcher = this;\n }\n\n vm._watchers.push(this); // options\n\n\n if (options) {\n this.deep = !!options.deep;\n this.user = !!options.user;\n this.lazy = !!options.lazy;\n this.sync = !!options.sync;\n this.before = options.before;\n } else {\n this.deep = this.user = this.lazy = this.sync = false;\n }\n\n this.cb = cb;\n this.id = ++uid$2; // uid for batching\n\n this.active = true;\n this.dirty = this.lazy; // for lazy watchers\n\n this.deps = [];\n this.newDeps = [];\n this.depIds = new _Set();\n this.newDepIds = new _Set();\n this.expression = process.env.NODE_ENV !== 'production' ? expOrFn.toString() : ''; // parse expression for getter\n\n if (typeof expOrFn === 'function') {\n this.getter = expOrFn;\n } else {\n this.getter = parsePath(expOrFn);\n\n if (!this.getter) {\n this.getter = noop;\n process.env.NODE_ENV !== 'production' && warn(\"Failed watching path: \\\"\" + expOrFn + \"\\\" \" + 'Watcher only accepts simple dot-delimited paths. ' + 'For full control, use a function instead.', vm);\n }\n }\n\n this.value = this.lazy ? undefined : this.get();\n};\n/**\n * Evaluate the getter, and re-collect dependencies.\n */\n\n\nWatcher.prototype.get = function get() {\n pushTarget(this);\n var value;\n var vm = this.vm;\n\n try {\n value = this.getter.call(vm, vm);\n } catch (e) {\n if (this.user) {\n handleError(e, vm, \"getter for watcher \\\"\" + this.expression + \"\\\"\");\n } else {\n throw e;\n }\n } finally {\n // \"touch\" every property so they are all tracked as\n // dependencies for deep watching\n if (this.deep) {\n traverse(value);\n }\n\n popTarget();\n this.cleanupDeps();\n }\n\n return value;\n};\n/**\n * Add a dependency to this directive.\n */\n\n\nWatcher.prototype.addDep = function addDep(dep) {\n var id = dep.id;\n\n if (!this.newDepIds.has(id)) {\n this.newDepIds.add(id);\n this.newDeps.push(dep);\n\n if (!this.depIds.has(id)) {\n dep.addSub(this);\n }\n }\n};\n/**\n * Clean up for dependency collection.\n */\n\n\nWatcher.prototype.cleanupDeps = function cleanupDeps() {\n var i = this.deps.length;\n\n while (i--) {\n var dep = this.deps[i];\n\n if (!this.newDepIds.has(dep.id)) {\n dep.removeSub(this);\n }\n }\n\n var tmp = this.depIds;\n this.depIds = this.newDepIds;\n this.newDepIds = tmp;\n this.newDepIds.clear();\n tmp = this.deps;\n this.deps = this.newDeps;\n this.newDeps = tmp;\n this.newDeps.length = 0;\n};\n/**\n * Subscriber interface.\n * Will be called when a dependency changes.\n */\n\n\nWatcher.prototype.update = function update() {\n /* istanbul ignore else */\n if (this.lazy) {\n this.dirty = true;\n } else if (this.sync) {\n this.run();\n } else {\n queueWatcher(this);\n }\n};\n/**\n * Scheduler job interface.\n * Will be called by the scheduler.\n */\n\n\nWatcher.prototype.run = function run() {\n if (this.active) {\n var value = this.get();\n\n if (value !== this.value || // Deep watchers and watchers on Object/Arrays should fire even\n // when the value is the same, because the value may\n // have mutated.\n isObject(value) || this.deep) {\n // set new value\n var oldValue = this.value;\n this.value = value;\n\n if (this.user) {\n var info = \"callback for watcher \\\"\" + this.expression + \"\\\"\";\n invokeWithErrorHandling(this.cb, this.vm, [value, oldValue], this.vm, info);\n } else {\n this.cb.call(this.vm, value, oldValue);\n }\n }\n }\n};\n/**\n * Evaluate the value of the watcher.\n * This only gets called for lazy watchers.\n */\n\n\nWatcher.prototype.evaluate = function evaluate() {\n this.value = this.get();\n this.dirty = false;\n};\n/**\n * Depend on all deps collected by this watcher.\n */\n\n\nWatcher.prototype.depend = function depend() {\n var i = this.deps.length;\n\n while (i--) {\n this.deps[i].depend();\n }\n};\n/**\n * Remove self from all dependencies' subscriber list.\n */\n\n\nWatcher.prototype.teardown = function teardown() {\n if (this.active) {\n // remove self from vm's watcher list\n // this is a somewhat expensive operation so we skip it\n // if the vm is being destroyed.\n if (!this.vm._isBeingDestroyed) {\n remove(this.vm._watchers, this);\n }\n\n var i = this.deps.length;\n\n while (i--) {\n this.deps[i].removeSub(this);\n }\n\n this.active = false;\n }\n};\n/* */\n\n\nvar sharedPropertyDefinition = {\n enumerable: true,\n configurable: true,\n get: noop,\n set: noop\n};\n\nfunction proxy(target, sourceKey, key) {\n sharedPropertyDefinition.get = function proxyGetter() {\n return this[sourceKey][key];\n };\n\n sharedPropertyDefinition.set = function proxySetter(val) {\n this[sourceKey][key] = val;\n };\n\n Object.defineProperty(target, key, sharedPropertyDefinition);\n}\n\nfunction initState(vm) {\n vm._watchers = [];\n var opts = vm.$options;\n\n if (opts.props) {\n initProps(vm, opts.props);\n }\n\n if (opts.methods) {\n initMethods(vm, opts.methods);\n }\n\n if (opts.data) {\n initData(vm);\n } else {\n observe(vm._data = {}, true\n /* asRootData */\n );\n }\n\n if (opts.computed) {\n initComputed(vm, opts.computed);\n }\n\n if (opts.watch && opts.watch !== nativeWatch) {\n initWatch(vm, opts.watch);\n }\n}\n\nfunction initProps(vm, propsOptions) {\n var propsData = vm.$options.propsData || {};\n var props = vm._props = {}; // cache prop keys so that future props updates can iterate using Array\n // instead of dynamic object key enumeration.\n\n var keys = vm.$options._propKeys = [];\n var isRoot = !vm.$parent; // root instance props should be converted\n\n if (!isRoot) {\n toggleObserving(false);\n }\n\n var loop = function (key) {\n keys.push(key);\n var value = validateProp(key, propsOptions, propsData, vm);\n /* istanbul ignore else */\n\n if (process.env.NODE_ENV !== 'production') {\n var hyphenatedKey = hyphenate(key);\n\n if (isReservedAttribute(hyphenatedKey) || config.isReservedAttr(hyphenatedKey)) {\n warn(\"\\\"\" + hyphenatedKey + \"\\\" is a reserved attribute and cannot be used as component prop.\", vm);\n }\n\n defineReactive$$1(props, key, value, function () {\n if (!isRoot && !isUpdatingChildComponent) {\n warn(\"Avoid mutating a prop directly since the value will be \" + \"overwritten whenever the parent component re-renders. \" + \"Instead, use a data or computed property based on the prop's \" + \"value. Prop being mutated: \\\"\" + key + \"\\\"\", vm);\n }\n });\n } else {\n defineReactive$$1(props, key, value);\n } // static props are already proxied on the component's prototype\n // during Vue.extend(). We only need to proxy props defined at\n // instantiation here.\n\n\n if (!(key in vm)) {\n proxy(vm, \"_props\", key);\n }\n };\n\n for (var key in propsOptions) loop(key);\n\n toggleObserving(true);\n}\n\nfunction initData(vm) {\n var data = vm.$options.data;\n data = vm._data = typeof data === 'function' ? getData(data, vm) : data || {};\n\n if (!isPlainObject(data)) {\n data = {};\n process.env.NODE_ENV !== 'production' && warn('data functions should return an object:\\n' + 'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function', vm);\n } // proxy data on instance\n\n\n var keys = Object.keys(data);\n var props = vm.$options.props;\n var methods = vm.$options.methods;\n var i = keys.length;\n\n while (i--) {\n var key = keys[i];\n\n if (process.env.NODE_ENV !== 'production') {\n if (methods && hasOwn(methods, key)) {\n warn(\"Method \\\"\" + key + \"\\\" has already been defined as a data property.\", vm);\n }\n }\n\n if (props && hasOwn(props, key)) {\n process.env.NODE_ENV !== 'production' && warn(\"The data property \\\"\" + key + \"\\\" is already declared as a prop. \" + \"Use prop default value instead.\", vm);\n } else if (!isReserved(key)) {\n proxy(vm, \"_data\", key);\n }\n } // observe data\n\n\n observe(data, true\n /* asRootData */\n );\n}\n\nfunction getData(data, vm) {\n // #7573 disable dep collection when invoking data getters\n pushTarget();\n\n try {\n return data.call(vm, vm);\n } catch (e) {\n handleError(e, vm, \"data()\");\n return {};\n } finally {\n popTarget();\n }\n}\n\nvar computedWatcherOptions = {\n lazy: true\n};\n\nfunction initComputed(vm, computed) {\n // $flow-disable-line\n var watchers = vm._computedWatchers = Object.create(null); // computed properties are just getters during SSR\n\n var isSSR = isServerRendering();\n\n for (var key in computed) {\n var userDef = computed[key];\n var getter = typeof userDef === 'function' ? userDef : userDef.get;\n\n if (process.env.NODE_ENV !== 'production' && getter == null) {\n warn(\"Getter is missing for computed property \\\"\" + key + \"\\\".\", vm);\n }\n\n if (!isSSR) {\n // create internal watcher for the computed property.\n watchers[key] = new Watcher(vm, getter || noop, noop, computedWatcherOptions);\n } // component-defined computed properties are already defined on the\n // component prototype. We only need to define computed properties defined\n // at instantiation here.\n\n\n if (!(key in vm)) {\n defineComputed(vm, key, userDef);\n } else if (process.env.NODE_ENV !== 'production') {\n if (key in vm.$data) {\n warn(\"The computed property \\\"\" + key + \"\\\" is already defined in data.\", vm);\n } else if (vm.$options.props && key in vm.$options.props) {\n warn(\"The computed property \\\"\" + key + \"\\\" is already defined as a prop.\", vm);\n } else if (vm.$options.methods && key in vm.$options.methods) {\n warn(\"The computed property \\\"\" + key + \"\\\" is already defined as a method.\", vm);\n }\n }\n }\n}\n\nfunction defineComputed(target, key, userDef) {\n var shouldCache = !isServerRendering();\n\n if (typeof userDef === 'function') {\n sharedPropertyDefinition.get = shouldCache ? createComputedGetter(key) : createGetterInvoker(userDef);\n sharedPropertyDefinition.set = noop;\n } else {\n sharedPropertyDefinition.get = userDef.get ? shouldCache && userDef.cache !== false ? createComputedGetter(key) : createGetterInvoker(userDef.get) : noop;\n sharedPropertyDefinition.set = userDef.set || noop;\n }\n\n if (process.env.NODE_ENV !== 'production' && sharedPropertyDefinition.set === noop) {\n sharedPropertyDefinition.set = function () {\n warn(\"Computed property \\\"\" + key + \"\\\" was assigned to but it has no setter.\", this);\n };\n }\n\n Object.defineProperty(target, key, sharedPropertyDefinition);\n}\n\nfunction createComputedGetter(key) {\n return function computedGetter() {\n var watcher = this._computedWatchers && this._computedWatchers[key];\n\n if (watcher) {\n if (watcher.dirty) {\n watcher.evaluate();\n }\n\n if (Dep.target) {\n watcher.depend();\n }\n\n return watcher.value;\n }\n };\n}\n\nfunction createGetterInvoker(fn) {\n return function computedGetter() {\n return fn.call(this, this);\n };\n}\n\nfunction initMethods(vm, methods) {\n var props = vm.$options.props;\n\n for (var key in methods) {\n if (process.env.NODE_ENV !== 'production') {\n if (typeof methods[key] !== 'function') {\n warn(\"Method \\\"\" + key + \"\\\" has type \\\"\" + typeof methods[key] + \"\\\" in the component definition. \" + \"Did you reference the function correctly?\", vm);\n }\n\n if (props && hasOwn(props, key)) {\n warn(\"Method \\\"\" + key + \"\\\" has already been defined as a prop.\", vm);\n }\n\n if (key in vm && isReserved(key)) {\n warn(\"Method \\\"\" + key + \"\\\" conflicts with an existing Vue instance method. \" + \"Avoid defining component methods that start with _ or $.\");\n }\n }\n\n vm[key] = typeof methods[key] !== 'function' ? noop : bind(methods[key], vm);\n }\n}\n\nfunction initWatch(vm, watch) {\n for (var key in watch) {\n var handler = watch[key];\n\n if (Array.isArray(handler)) {\n for (var i = 0; i < handler.length; i++) {\n createWatcher(vm, key, handler[i]);\n }\n } else {\n createWatcher(vm, key, handler);\n }\n }\n}\n\nfunction createWatcher(vm, expOrFn, handler, options) {\n if (isPlainObject(handler)) {\n options = handler;\n handler = handler.handler;\n }\n\n if (typeof handler === 'string') {\n handler = vm[handler];\n }\n\n return vm.$watch(expOrFn, handler, options);\n}\n\nfunction stateMixin(Vue) {\n // flow somehow has problems with directly declared definition object\n // when using Object.defineProperty, so we have to procedurally build up\n // the object here.\n var dataDef = {};\n\n dataDef.get = function () {\n return this._data;\n };\n\n var propsDef = {};\n\n propsDef.get = function () {\n return this._props;\n };\n\n if (process.env.NODE_ENV !== 'production') {\n dataDef.set = function () {\n warn('Avoid replacing instance root $data. ' + 'Use nested data properties instead.', this);\n };\n\n propsDef.set = function () {\n warn(\"$props is readonly.\", this);\n };\n }\n\n Object.defineProperty(Vue.prototype, '$data', dataDef);\n Object.defineProperty(Vue.prototype, '$props', propsDef);\n Vue.prototype.$set = set;\n Vue.prototype.$delete = del;\n\n Vue.prototype.$watch = function (expOrFn, cb, options) {\n var vm = this;\n\n if (isPlainObject(cb)) {\n return createWatcher(vm, expOrFn, cb, options);\n }\n\n options = options || {};\n options.user = true;\n var watcher = new Watcher(vm, expOrFn, cb, options);\n\n if (options.immediate) {\n var info = \"callback for immediate watcher \\\"\" + watcher.expression + \"\\\"\";\n pushTarget();\n invokeWithErrorHandling(cb, vm, [watcher.value], vm, info);\n popTarget();\n }\n\n return function unwatchFn() {\n watcher.teardown();\n };\n };\n}\n/* */\n\n\nvar uid$3 = 0;\n\nfunction initMixin(Vue) {\n Vue.prototype._init = function (options) {\n var vm = this; // a uid\n\n vm._uid = uid$3++;\n var startTag, endTag;\n /* istanbul ignore if */\n\n if (process.env.NODE_ENV !== 'production' && config.performance && mark) {\n startTag = \"vue-perf-start:\" + vm._uid;\n endTag = \"vue-perf-end:\" + vm._uid;\n mark(startTag);\n } // a flag to avoid this being observed\n\n\n vm._isVue = true; // merge options\n\n if (options && options._isComponent) {\n // optimize internal component instantiation\n // since dynamic options merging is pretty slow, and none of the\n // internal component options needs special treatment.\n initInternalComponent(vm, options);\n } else {\n vm.$options = mergeOptions(resolveConstructorOptions(vm.constructor), options || {}, vm);\n }\n /* istanbul ignore else */\n\n\n if (process.env.NODE_ENV !== 'production') {\n initProxy(vm);\n } else {\n vm._renderProxy = vm;\n } // expose real self\n\n\n vm._self = vm;\n initLifecycle(vm);\n initEvents(vm);\n initRender(vm);\n callHook(vm, 'beforeCreate');\n initInjections(vm); // resolve injections before data/props\n\n initState(vm);\n initProvide(vm); // resolve provide after data/props\n\n callHook(vm, 'created');\n /* istanbul ignore if */\n\n if (process.env.NODE_ENV !== 'production' && config.performance && mark) {\n vm._name = formatComponentName(vm, false);\n mark(endTag);\n measure(\"vue \" + vm._name + \" init\", startTag, endTag);\n }\n\n if (vm.$options.el) {\n vm.$mount(vm.$options.el);\n }\n };\n}\n\nfunction initInternalComponent(vm, options) {\n var opts = vm.$options = Object.create(vm.constructor.options); // doing this because it's faster than dynamic enumeration.\n\n var parentVnode = options._parentVnode;\n opts.parent = options.parent;\n opts._parentVnode = parentVnode;\n var vnodeComponentOptions = parentVnode.componentOptions;\n opts.propsData = vnodeComponentOptions.propsData;\n opts._parentListeners = vnodeComponentOptions.listeners;\n opts._renderChildren = vnodeComponentOptions.children;\n opts._componentTag = vnodeComponentOptions.tag;\n\n if (options.render) {\n opts.render = options.render;\n opts.staticRenderFns = options.staticRenderFns;\n }\n}\n\nfunction resolveConstructorOptions(Ctor) {\n var options = Ctor.options;\n\n if (Ctor.super) {\n var superOptions = resolveConstructorOptions(Ctor.super);\n var cachedSuperOptions = Ctor.superOptions;\n\n if (superOptions !== cachedSuperOptions) {\n // super option changed,\n // need to resolve new options.\n Ctor.superOptions = superOptions; // check if there are any late-modified/attached options (#4976)\n\n var modifiedOptions = resolveModifiedOptions(Ctor); // update base extend options\n\n if (modifiedOptions) {\n extend(Ctor.extendOptions, modifiedOptions);\n }\n\n options = Ctor.options = mergeOptions(superOptions, Ctor.extendOptions);\n\n if (options.name) {\n options.components[options.name] = Ctor;\n }\n }\n }\n\n return options;\n}\n\nfunction resolveModifiedOptions(Ctor) {\n var modified;\n var latest = Ctor.options;\n var sealed = Ctor.sealedOptions;\n\n for (var key in latest) {\n if (latest[key] !== sealed[key]) {\n if (!modified) {\n modified = {};\n }\n\n modified[key] = latest[key];\n }\n }\n\n return modified;\n}\n\nfunction Vue(options) {\n if (process.env.NODE_ENV !== 'production' && !(this instanceof Vue)) {\n warn('Vue is a constructor and should be called with the `new` keyword');\n }\n\n this._init(options);\n}\n\ninitMixin(Vue);\nstateMixin(Vue);\neventsMixin(Vue);\nlifecycleMixin(Vue);\nrenderMixin(Vue);\n/* */\n\nfunction initUse(Vue) {\n Vue.use = function (plugin) {\n var installedPlugins = this._installedPlugins || (this._installedPlugins = []);\n\n if (installedPlugins.indexOf(plugin) > -1) {\n return this;\n } // additional parameters\n\n\n var args = toArray(arguments, 1);\n args.unshift(this);\n\n if (typeof plugin.install === 'function') {\n plugin.install.apply(plugin, args);\n } else if (typeof plugin === 'function') {\n plugin.apply(null, args);\n }\n\n installedPlugins.push(plugin);\n return this;\n };\n}\n/* */\n\n\nfunction initMixin$1(Vue) {\n Vue.mixin = function (mixin) {\n this.options = mergeOptions(this.options, mixin);\n return this;\n };\n}\n/* */\n\n\nfunction initExtend(Vue) {\n /**\n * Each instance constructor, including Vue, has a unique\n * cid. This enables us to create wrapped \"child\n * constructors\" for prototypal inheritance and cache them.\n */\n Vue.cid = 0;\n var cid = 1;\n /**\n * Class inheritance\n */\n\n Vue.extend = function (extendOptions) {\n extendOptions = extendOptions || {};\n var Super = this;\n var SuperId = Super.cid;\n var cachedCtors = extendOptions._Ctor || (extendOptions._Ctor = {});\n\n if (cachedCtors[SuperId]) {\n return cachedCtors[SuperId];\n }\n\n var name = extendOptions.name || Super.options.name;\n\n if (process.env.NODE_ENV !== 'production' && name) {\n validateComponentName(name);\n }\n\n var Sub = function VueComponent(options) {\n this._init(options);\n };\n\n Sub.prototype = Object.create(Super.prototype);\n Sub.prototype.constructor = Sub;\n Sub.cid = cid++;\n Sub.options = mergeOptions(Super.options, extendOptions);\n Sub['super'] = Super; // For props and computed properties, we define the proxy getters on\n // the Vue instances at extension time, on the extended prototype. This\n // avoids Object.defineProperty calls for each instance created.\n\n if (Sub.options.props) {\n initProps$1(Sub);\n }\n\n if (Sub.options.computed) {\n initComputed$1(Sub);\n } // allow further extension/mixin/plugin usage\n\n\n Sub.extend = Super.extend;\n Sub.mixin = Super.mixin;\n Sub.use = Super.use; // create asset registers, so extended classes\n // can have their private assets too.\n\n ASSET_TYPES.forEach(function (type) {\n Sub[type] = Super[type];\n }); // enable recursive self-lookup\n\n if (name) {\n Sub.options.components[name] = Sub;\n } // keep a reference to the super options at extension time.\n // later at instantiation we can check if Super's options have\n // been updated.\n\n\n Sub.superOptions = Super.options;\n Sub.extendOptions = extendOptions;\n Sub.sealedOptions = extend({}, Sub.options); // cache constructor\n\n cachedCtors[SuperId] = Sub;\n return Sub;\n };\n}\n\nfunction initProps$1(Comp) {\n var props = Comp.options.props;\n\n for (var key in props) {\n proxy(Comp.prototype, \"_props\", key);\n }\n}\n\nfunction initComputed$1(Comp) {\n var computed = Comp.options.computed;\n\n for (var key in computed) {\n defineComputed(Comp.prototype, key, computed[key]);\n }\n}\n/* */\n\n\nfunction initAssetRegisters(Vue) {\n /**\n * Create asset registration methods.\n */\n ASSET_TYPES.forEach(function (type) {\n Vue[type] = function (id, definition) {\n if (!definition) {\n return this.options[type + 's'][id];\n } else {\n /* istanbul ignore if */\n if (process.env.NODE_ENV !== 'production' && type === 'component') {\n validateComponentName(id);\n }\n\n if (type === 'component' && isPlainObject(definition)) {\n definition.name = definition.name || id;\n definition = this.options._base.extend(definition);\n }\n\n if (type === 'directive' && typeof definition === 'function') {\n definition = {\n bind: definition,\n update: definition\n };\n }\n\n this.options[type + 's'][id] = definition;\n return definition;\n }\n };\n });\n}\n/* */\n\n\nfunction getComponentName(opts) {\n return opts && (opts.Ctor.options.name || opts.tag);\n}\n\nfunction matches(pattern, name) {\n if (Array.isArray(pattern)) {\n return pattern.indexOf(name) > -1;\n } else if (typeof pattern === 'string') {\n return pattern.split(',').indexOf(name) > -1;\n } else if (isRegExp(pattern)) {\n return pattern.test(name);\n }\n /* istanbul ignore next */\n\n\n return false;\n}\n\nfunction pruneCache(keepAliveInstance, filter) {\n var cache = keepAliveInstance.cache;\n var keys = keepAliveInstance.keys;\n var _vnode = keepAliveInstance._vnode;\n\n for (var key in cache) {\n var entry = cache[key];\n\n if (entry) {\n var name = entry.name;\n\n if (name && !filter(name)) {\n pruneCacheEntry(cache, key, keys, _vnode);\n }\n }\n }\n}\n\nfunction pruneCacheEntry(cache, key, keys, current) {\n var entry = cache[key];\n\n if (entry && (!current || entry.tag !== current.tag)) {\n entry.componentInstance.$destroy();\n }\n\n cache[key] = null;\n remove(keys, key);\n}\n\nvar patternTypes = [String, RegExp, Array];\nvar KeepAlive = {\n name: 'keep-alive',\n abstract: true,\n props: {\n include: patternTypes,\n exclude: patternTypes,\n max: [String, Number]\n },\n methods: {\n cacheVNode: function cacheVNode() {\n var ref = this;\n var cache = ref.cache;\n var keys = ref.keys;\n var vnodeToCache = ref.vnodeToCache;\n var keyToCache = ref.keyToCache;\n\n if (vnodeToCache) {\n var tag = vnodeToCache.tag;\n var componentInstance = vnodeToCache.componentInstance;\n var componentOptions = vnodeToCache.componentOptions;\n cache[keyToCache] = {\n name: getComponentName(componentOptions),\n tag: tag,\n componentInstance: componentInstance\n };\n keys.push(keyToCache); // prune oldest entry\n\n if (this.max && keys.length > parseInt(this.max)) {\n pruneCacheEntry(cache, keys[0], keys, this._vnode);\n }\n\n this.vnodeToCache = null;\n }\n }\n },\n created: function created() {\n this.cache = Object.create(null);\n this.keys = [];\n },\n destroyed: function destroyed() {\n for (var key in this.cache) {\n pruneCacheEntry(this.cache, key, this.keys);\n }\n },\n mounted: function mounted() {\n var this$1 = this;\n this.cacheVNode();\n this.$watch('include', function (val) {\n pruneCache(this$1, function (name) {\n return matches(val, name);\n });\n });\n this.$watch('exclude', function (val) {\n pruneCache(this$1, function (name) {\n return !matches(val, name);\n });\n });\n },\n updated: function updated() {\n this.cacheVNode();\n },\n render: function render() {\n var slot = this.$slots.default;\n var vnode = getFirstComponentChild(slot);\n var componentOptions = vnode && vnode.componentOptions;\n\n if (componentOptions) {\n // check pattern\n var name = getComponentName(componentOptions);\n var ref = this;\n var include = ref.include;\n var exclude = ref.exclude;\n\n if ( // not included\n include && (!name || !matches(include, name)) || // excluded\n exclude && name && matches(exclude, name)) {\n return vnode;\n }\n\n var ref$1 = this;\n var cache = ref$1.cache;\n var keys = ref$1.keys;\n var key = vnode.key == null // same constructor may get registered as different local components\n // so cid alone is not enough (#3269)\n ? componentOptions.Ctor.cid + (componentOptions.tag ? \"::\" + componentOptions.tag : '') : vnode.key;\n\n if (cache[key]) {\n vnode.componentInstance = cache[key].componentInstance; // make current key freshest\n\n remove(keys, key);\n keys.push(key);\n } else {\n // delay setting the cache until update\n this.vnodeToCache = vnode;\n this.keyToCache = key;\n }\n\n vnode.data.keepAlive = true;\n }\n\n return vnode || slot && slot[0];\n }\n};\nvar builtInComponents = {\n KeepAlive: KeepAlive\n};\n/* */\n\nfunction initGlobalAPI(Vue) {\n // config\n var configDef = {};\n\n configDef.get = function () {\n return config;\n };\n\n if (process.env.NODE_ENV !== 'production') {\n configDef.set = function () {\n warn('Do not replace the Vue.config object, set individual fields instead.');\n };\n }\n\n Object.defineProperty(Vue, 'config', configDef); // exposed util methods.\n // NOTE: these are not considered part of the public API - avoid relying on\n // them unless you are aware of the risk.\n\n Vue.util = {\n warn: warn,\n extend: extend,\n mergeOptions: mergeOptions,\n defineReactive: defineReactive$$1\n };\n Vue.set = set;\n Vue.delete = del;\n Vue.nextTick = nextTick; // 2.6 explicit observable API\n\n Vue.observable = function (obj) {\n observe(obj);\n return obj;\n };\n\n Vue.options = Object.create(null);\n ASSET_TYPES.forEach(function (type) {\n Vue.options[type + 's'] = Object.create(null);\n }); // this is used to identify the \"base\" constructor to extend all plain-object\n // components with in Weex's multi-instance scenarios.\n\n Vue.options._base = Vue;\n extend(Vue.options.components, builtInComponents);\n initUse(Vue);\n initMixin$1(Vue);\n initExtend(Vue);\n initAssetRegisters(Vue);\n}\n\ninitGlobalAPI(Vue);\nObject.defineProperty(Vue.prototype, '$isServer', {\n get: isServerRendering\n});\nObject.defineProperty(Vue.prototype, '$ssrContext', {\n get: function get() {\n /* istanbul ignore next */\n return this.$vnode && this.$vnode.ssrContext;\n }\n}); // expose FunctionalRenderContext for ssr runtime helper installation\n\nObject.defineProperty(Vue, 'FunctionalRenderContext', {\n value: FunctionalRenderContext\n});\nVue.version = '2.6.14';\n/* */\n// these are reserved for web because they are directly compiled away\n// during template compilation\n\nvar isReservedAttr = makeMap('style,class'); // attributes that should be using props for binding\n\nvar acceptValue = makeMap('input,textarea,option,select,progress');\n\nvar mustUseProp = function (tag, type, attr) {\n return attr === 'value' && acceptValue(tag) && type !== 'button' || attr === 'selected' && tag === 'option' || attr === 'checked' && tag === 'input' || attr === 'muted' && tag === 'video';\n};\n\nvar isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck');\nvar isValidContentEditableValue = makeMap('events,caret,typing,plaintext-only');\n\nvar convertEnumeratedValue = function (key, value) {\n return isFalsyAttrValue(value) || value === 'false' ? 'false' // allow arbitrary string value for contenteditable\n : key === 'contenteditable' && isValidContentEditableValue(value) ? value : 'true';\n};\n\nvar isBooleanAttr = makeMap('allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,' + 'default,defaultchecked,defaultmuted,defaultselected,defer,disabled,' + 'enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,' + 'muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,' + 'required,reversed,scoped,seamless,selected,sortable,' + 'truespeed,typemustmatch,visible');\nvar xlinkNS = 'http://www.w3.org/1999/xlink';\n\nvar isXlink = function (name) {\n return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink';\n};\n\nvar getXlinkProp = function (name) {\n return isXlink(name) ? name.slice(6, name.length) : '';\n};\n\nvar isFalsyAttrValue = function (val) {\n return val == null || val === false;\n};\n/* */\n\n\nfunction genClassForVnode(vnode) {\n var data = vnode.data;\n var parentNode = vnode;\n var childNode = vnode;\n\n while (isDef(childNode.componentInstance)) {\n childNode = childNode.componentInstance._vnode;\n\n if (childNode && childNode.data) {\n data = mergeClassData(childNode.data, data);\n }\n }\n\n while (isDef(parentNode = parentNode.parent)) {\n if (parentNode && parentNode.data) {\n data = mergeClassData(data, parentNode.data);\n }\n }\n\n return renderClass(data.staticClass, data.class);\n}\n\nfunction mergeClassData(child, parent) {\n return {\n staticClass: concat(child.staticClass, parent.staticClass),\n class: isDef(child.class) ? [child.class, parent.class] : parent.class\n };\n}\n\nfunction renderClass(staticClass, dynamicClass) {\n if (isDef(staticClass) || isDef(dynamicClass)) {\n return concat(staticClass, stringifyClass(dynamicClass));\n }\n /* istanbul ignore next */\n\n\n return '';\n}\n\nfunction concat(a, b) {\n return a ? b ? a + ' ' + b : a : b || '';\n}\n\nfunction stringifyClass(value) {\n if (Array.isArray(value)) {\n return stringifyArray(value);\n }\n\n if (isObject(value)) {\n return stringifyObject(value);\n }\n\n if (typeof value === 'string') {\n return value;\n }\n /* istanbul ignore next */\n\n\n return '';\n}\n\nfunction stringifyArray(value) {\n var res = '';\n var stringified;\n\n for (var i = 0, l = value.length; i < l; i++) {\n if (isDef(stringified = stringifyClass(value[i])) && stringified !== '') {\n if (res) {\n res += ' ';\n }\n\n res += stringified;\n }\n }\n\n return res;\n}\n\nfunction stringifyObject(value) {\n var res = '';\n\n for (var key in value) {\n if (value[key]) {\n if (res) {\n res += ' ';\n }\n\n res += key;\n }\n }\n\n return res;\n}\n/* */\n\n\nvar namespaceMap = {\n svg: 'http://www.w3.org/2000/svg',\n math: 'http://www.w3.org/1998/Math/MathML'\n};\nvar isHTMLTag = makeMap('html,body,base,head,link,meta,style,title,' + 'address,article,aside,footer,header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,' + 'div,dd,dl,dt,figcaption,figure,picture,hr,img,li,main,ol,p,pre,ul,' + 'a,b,abbr,bdi,bdo,br,cite,code,data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,' + 's,samp,small,span,strong,sub,sup,time,u,var,wbr,area,audio,map,track,video,' + 'embed,object,param,source,canvas,script,noscript,del,ins,' + 'caption,col,colgroup,table,thead,tbody,td,th,tr,' + 'button,datalist,fieldset,form,input,label,legend,meter,optgroup,option,' + 'output,progress,select,textarea,' + 'details,dialog,menu,menuitem,summary,' + 'content,element,shadow,template,blockquote,iframe,tfoot'); // this map is intentionally selective, only covering SVG elements that may\n// contain child elements.\n\nvar isSVG = makeMap('svg,animate,circle,clippath,cursor,defs,desc,ellipse,filter,font-face,' + 'foreignobject,g,glyph,image,line,marker,mask,missing-glyph,path,pattern,' + 'polygon,polyline,rect,switch,symbol,text,textpath,tspan,use,view', true);\n\nvar isReservedTag = function (tag) {\n return isHTMLTag(tag) || isSVG(tag);\n};\n\nfunction getTagNamespace(tag) {\n if (isSVG(tag)) {\n return 'svg';\n } // basic support for MathML\n // note it doesn't support other MathML elements being component roots\n\n\n if (tag === 'math') {\n return 'math';\n }\n}\n\nvar unknownElementCache = Object.create(null);\n\nfunction isUnknownElement(tag) {\n /* istanbul ignore if */\n if (!inBrowser) {\n return true;\n }\n\n if (isReservedTag(tag)) {\n return false;\n }\n\n tag = tag.toLowerCase();\n /* istanbul ignore if */\n\n if (unknownElementCache[tag] != null) {\n return unknownElementCache[tag];\n }\n\n var el = document.createElement(tag);\n\n if (tag.indexOf('-') > -1) {\n // http://stackoverflow.com/a/28210364/1070244\n return unknownElementCache[tag] = el.constructor === window.HTMLUnknownElement || el.constructor === window.HTMLElement;\n } else {\n return unknownElementCache[tag] = /HTMLUnknownElement/.test(el.toString());\n }\n}\n\nvar isTextInputType = makeMap('text,number,password,search,email,tel,url');\n/* */\n\n/**\n * Query an element selector if it's not an element already.\n */\n\nfunction query(el) {\n if (typeof el === 'string') {\n var selected = document.querySelector(el);\n\n if (!selected) {\n process.env.NODE_ENV !== 'production' && warn('Cannot find element: ' + el);\n return document.createElement('div');\n }\n\n return selected;\n } else {\n return el;\n }\n}\n/* */\n\n\nfunction createElement$1(tagName, vnode) {\n var elm = document.createElement(tagName);\n\n if (tagName !== 'select') {\n return elm;\n } // false or null will remove the attribute but undefined will not\n\n\n if (vnode.data && vnode.data.attrs && vnode.data.attrs.multiple !== undefined) {\n elm.setAttribute('multiple', 'multiple');\n }\n\n return elm;\n}\n\nfunction createElementNS(namespace, tagName) {\n return document.createElementNS(namespaceMap[namespace], tagName);\n}\n\nfunction createTextNode(text) {\n return document.createTextNode(text);\n}\n\nfunction createComment(text) {\n return document.createComment(text);\n}\n\nfunction insertBefore(parentNode, newNode, referenceNode) {\n parentNode.insertBefore(newNode, referenceNode);\n}\n\nfunction removeChild(node, child) {\n node.removeChild(child);\n}\n\nfunction appendChild(node, child) {\n node.appendChild(child);\n}\n\nfunction parentNode(node) {\n return node.parentNode;\n}\n\nfunction nextSibling(node) {\n return node.nextSibling;\n}\n\nfunction tagName(node) {\n return node.tagName;\n}\n\nfunction setTextContent(node, text) {\n node.textContent = text;\n}\n\nfunction setStyleScope(node, scopeId) {\n node.setAttribute(scopeId, '');\n}\n\nvar nodeOps = /*#__PURE__*/Object.freeze({\n createElement: createElement$1,\n createElementNS: createElementNS,\n createTextNode: createTextNode,\n createComment: createComment,\n insertBefore: insertBefore,\n removeChild: removeChild,\n appendChild: appendChild,\n parentNode: parentNode,\n nextSibling: nextSibling,\n tagName: tagName,\n setTextContent: setTextContent,\n setStyleScope: setStyleScope\n});\n/* */\n\nvar ref = {\n create: function create(_, vnode) {\n registerRef(vnode);\n },\n update: function update(oldVnode, vnode) {\n if (oldVnode.data.ref !== vnode.data.ref) {\n registerRef(oldVnode, true);\n registerRef(vnode);\n }\n },\n destroy: function destroy(vnode) {\n registerRef(vnode, true);\n }\n};\n\nfunction registerRef(vnode, isRemoval) {\n var key = vnode.data.ref;\n\n if (!isDef(key)) {\n return;\n }\n\n var vm = vnode.context;\n var ref = vnode.componentInstance || vnode.elm;\n var refs = vm.$refs;\n\n if (isRemoval) {\n if (Array.isArray(refs[key])) {\n remove(refs[key], ref);\n } else if (refs[key] === ref) {\n refs[key] = undefined;\n }\n } else {\n if (vnode.data.refInFor) {\n if (!Array.isArray(refs[key])) {\n refs[key] = [ref];\n } else if (refs[key].indexOf(ref) < 0) {\n // $flow-disable-line\n refs[key].push(ref);\n }\n } else {\n refs[key] = ref;\n }\n }\n}\n/**\n * Virtual DOM patching algorithm based on Snabbdom by\n * Simon Friis Vindum (@paldepind)\n * Licensed under the MIT License\n * https://github.com/paldepind/snabbdom/blob/master/LICENSE\n *\n * modified by Evan You (@yyx990803)\n *\n * Not type-checking this because this file is perf-critical and the cost\n * of making flow understand it is not worth it.\n */\n\n\nvar emptyNode = new VNode('', {}, []);\nvar hooks = ['create', 'activate', 'update', 'remove', 'destroy'];\n\nfunction sameVnode(a, b) {\n return a.key === b.key && a.asyncFactory === b.asyncFactory && (a.tag === b.tag && a.isComment === b.isComment && isDef(a.data) === isDef(b.data) && sameInputType(a, b) || isTrue(a.isAsyncPlaceholder) && isUndef(b.asyncFactory.error));\n}\n\nfunction sameInputType(a, b) {\n if (a.tag !== 'input') {\n return true;\n }\n\n var i;\n var typeA = isDef(i = a.data) && isDef(i = i.attrs) && i.type;\n var typeB = isDef(i = b.data) && isDef(i = i.attrs) && i.type;\n return typeA === typeB || isTextInputType(typeA) && isTextInputType(typeB);\n}\n\nfunction createKeyToOldIdx(children, beginIdx, endIdx) {\n var i, key;\n var map = {};\n\n for (i = beginIdx; i <= endIdx; ++i) {\n key = children[i].key;\n\n if (isDef(key)) {\n map[key] = i;\n }\n }\n\n return map;\n}\n\nfunction createPatchFunction(backend) {\n var i, j;\n var cbs = {};\n var modules = backend.modules;\n var nodeOps = backend.nodeOps;\n\n for (i = 0; i < hooks.length; ++i) {\n cbs[hooks[i]] = [];\n\n for (j = 0; j < modules.length; ++j) {\n if (isDef(modules[j][hooks[i]])) {\n cbs[hooks[i]].push(modules[j][hooks[i]]);\n }\n }\n }\n\n function emptyNodeAt(elm) {\n return new VNode(nodeOps.tagName(elm).toLowerCase(), {}, [], undefined, elm);\n }\n\n function createRmCb(childElm, listeners) {\n function remove$$1() {\n if (--remove$$1.listeners === 0) {\n removeNode(childElm);\n }\n }\n\n remove$$1.listeners = listeners;\n return remove$$1;\n }\n\n function removeNode(el) {\n var parent = nodeOps.parentNode(el); // element may have already been removed due to v-html / v-text\n\n if (isDef(parent)) {\n nodeOps.removeChild(parent, el);\n }\n }\n\n function isUnknownElement$$1(vnode, inVPre) {\n return !inVPre && !vnode.ns && !(config.ignoredElements.length && config.ignoredElements.some(function (ignore) {\n return isRegExp(ignore) ? ignore.test(vnode.tag) : ignore === vnode.tag;\n })) && config.isUnknownElement(vnode.tag);\n }\n\n var creatingElmInVPre = 0;\n\n function createElm(vnode, insertedVnodeQueue, parentElm, refElm, nested, ownerArray, index) {\n if (isDef(vnode.elm) && isDef(ownerArray)) {\n // This vnode was used in a previous render!\n // now it's used as a new node, overwriting its elm would cause\n // potential patch errors down the road when it's used as an insertion\n // reference node. Instead, we clone the node on-demand before creating\n // associated DOM element for it.\n vnode = ownerArray[index] = cloneVNode(vnode);\n }\n\n vnode.isRootInsert = !nested; // for transition enter check\n\n if (createComponent(vnode, insertedVnodeQueue, parentElm, refElm)) {\n return;\n }\n\n var data = vnode.data;\n var children = vnode.children;\n var tag = vnode.tag;\n\n if (isDef(tag)) {\n if (process.env.NODE_ENV !== 'production') {\n if (data && data.pre) {\n creatingElmInVPre++;\n }\n\n if (isUnknownElement$$1(vnode, creatingElmInVPre)) {\n warn('Unknown custom element: <' + tag + '> - did you ' + 'register the component correctly? For recursive components, ' + 'make sure to provide the \"name\" option.', vnode.context);\n }\n }\n\n vnode.elm = vnode.ns ? nodeOps.createElementNS(vnode.ns, tag) : nodeOps.createElement(tag, vnode);\n setScope(vnode);\n /* istanbul ignore if */\n\n {\n createChildren(vnode, children, insertedVnodeQueue);\n\n if (isDef(data)) {\n invokeCreateHooks(vnode, insertedVnodeQueue);\n }\n\n insert(parentElm, vnode.elm, refElm);\n }\n\n if (process.env.NODE_ENV !== 'production' && data && data.pre) {\n creatingElmInVPre--;\n }\n } else if (isTrue(vnode.isComment)) {\n vnode.elm = nodeOps.createComment(vnode.text);\n insert(parentElm, vnode.elm, refElm);\n } else {\n vnode.elm = nodeOps.createTextNode(vnode.text);\n insert(parentElm, vnode.elm, refElm);\n }\n }\n\n function createComponent(vnode, insertedVnodeQueue, parentElm, refElm) {\n var i = vnode.data;\n\n if (isDef(i)) {\n var isReactivated = isDef(vnode.componentInstance) && i.keepAlive;\n\n if (isDef(i = i.hook) && isDef(i = i.init)) {\n i(vnode, false\n /* hydrating */\n );\n } // after calling the init hook, if the vnode is a child component\n // it should've created a child instance and mounted it. the child\n // component also has set the placeholder vnode's elm.\n // in that case we can just return the element and be done.\n\n\n if (isDef(vnode.componentInstance)) {\n initComponent(vnode, insertedVnodeQueue);\n insert(parentElm, vnode.elm, refElm);\n\n if (isTrue(isReactivated)) {\n reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm);\n }\n\n return true;\n }\n }\n }\n\n function initComponent(vnode, insertedVnodeQueue) {\n if (isDef(vnode.data.pendingInsert)) {\n insertedVnodeQueue.push.apply(insertedVnodeQueue, vnode.data.pendingInsert);\n vnode.data.pendingInsert = null;\n }\n\n vnode.elm = vnode.componentInstance.$el;\n\n if (isPatchable(vnode)) {\n invokeCreateHooks(vnode, insertedVnodeQueue);\n setScope(vnode);\n } else {\n // empty component root.\n // skip all element-related modules except for ref (#3455)\n registerRef(vnode); // make sure to invoke the insert hook\n\n insertedVnodeQueue.push(vnode);\n }\n }\n\n function reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm) {\n var i; // hack for #4339: a reactivated component with inner transition\n // does not trigger because the inner node's created hooks are not called\n // again. It's not ideal to involve module-specific logic in here but\n // there doesn't seem to be a better way to do it.\n\n var innerNode = vnode;\n\n while (innerNode.componentInstance) {\n innerNode = innerNode.componentInstance._vnode;\n\n if (isDef(i = innerNode.data) && isDef(i = i.transition)) {\n for (i = 0; i < cbs.activate.length; ++i) {\n cbs.activate[i](emptyNode, innerNode);\n }\n\n insertedVnodeQueue.push(innerNode);\n break;\n }\n } // unlike a newly created component,\n // a reactivated keep-alive component doesn't insert itself\n\n\n insert(parentElm, vnode.elm, refElm);\n }\n\n function insert(parent, elm, ref$$1) {\n if (isDef(parent)) {\n if (isDef(ref$$1)) {\n if (nodeOps.parentNode(ref$$1) === parent) {\n nodeOps.insertBefore(parent, elm, ref$$1);\n }\n } else {\n nodeOps.appendChild(parent, elm);\n }\n }\n }\n\n function createChildren(vnode, children, insertedVnodeQueue) {\n if (Array.isArray(children)) {\n if (process.env.NODE_ENV !== 'production') {\n checkDuplicateKeys(children);\n }\n\n for (var i = 0; i < children.length; ++i) {\n createElm(children[i], insertedVnodeQueue, vnode.elm, null, true, children, i);\n }\n } else if (isPrimitive(vnode.text)) {\n nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(String(vnode.text)));\n }\n }\n\n function isPatchable(vnode) {\n while (vnode.componentInstance) {\n vnode = vnode.componentInstance._vnode;\n }\n\n return isDef(vnode.tag);\n }\n\n function invokeCreateHooks(vnode, insertedVnodeQueue) {\n for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {\n cbs.create[i$1](emptyNode, vnode);\n }\n\n i = vnode.data.hook; // Reuse variable\n\n if (isDef(i)) {\n if (isDef(i.create)) {\n i.create(emptyNode, vnode);\n }\n\n if (isDef(i.insert)) {\n insertedVnodeQueue.push(vnode);\n }\n }\n } // set scope id attribute for scoped CSS.\n // this is implemented as a special case to avoid the overhead\n // of going through the normal attribute patching process.\n\n\n function setScope(vnode) {\n var i;\n\n if (isDef(i = vnode.fnScopeId)) {\n nodeOps.setStyleScope(vnode.elm, i);\n } else {\n var ancestor = vnode;\n\n while (ancestor) {\n if (isDef(i = ancestor.context) && isDef(i = i.$options._scopeId)) {\n nodeOps.setStyleScope(vnode.elm, i);\n }\n\n ancestor = ancestor.parent;\n }\n } // for slot content they should also get the scopeId from the host instance.\n\n\n if (isDef(i = activeInstance) && i !== vnode.context && i !== vnode.fnContext && isDef(i = i.$options._scopeId)) {\n nodeOps.setStyleScope(vnode.elm, i);\n }\n }\n\n function addVnodes(parentElm, refElm, vnodes, startIdx, endIdx, insertedVnodeQueue) {\n for (; startIdx <= endIdx; ++startIdx) {\n createElm(vnodes[startIdx], insertedVnodeQueue, parentElm, refElm, false, vnodes, startIdx);\n }\n }\n\n function invokeDestroyHook(vnode) {\n var i, j;\n var data = vnode.data;\n\n if (isDef(data)) {\n if (isDef(i = data.hook) && isDef(i = i.destroy)) {\n i(vnode);\n }\n\n for (i = 0; i < cbs.destroy.length; ++i) {\n cbs.destroy[i](vnode);\n }\n }\n\n if (isDef(i = vnode.children)) {\n for (j = 0; j < vnode.children.length; ++j) {\n invokeDestroyHook(vnode.children[j]);\n }\n }\n }\n\n function removeVnodes(vnodes, startIdx, endIdx) {\n for (; startIdx <= endIdx; ++startIdx) {\n var ch = vnodes[startIdx];\n\n if (isDef(ch)) {\n if (isDef(ch.tag)) {\n removeAndInvokeRemoveHook(ch);\n invokeDestroyHook(ch);\n } else {\n // Text node\n removeNode(ch.elm);\n }\n }\n }\n }\n\n function removeAndInvokeRemoveHook(vnode, rm) {\n if (isDef(rm) || isDef(vnode.data)) {\n var i;\n var listeners = cbs.remove.length + 1;\n\n if (isDef(rm)) {\n // we have a recursively passed down rm callback\n // increase the listeners count\n rm.listeners += listeners;\n } else {\n // directly removing\n rm = createRmCb(vnode.elm, listeners);\n } // recursively invoke hooks on child component root node\n\n\n if (isDef(i = vnode.componentInstance) && isDef(i = i._vnode) && isDef(i.data)) {\n removeAndInvokeRemoveHook(i, rm);\n }\n\n for (i = 0; i < cbs.remove.length; ++i) {\n cbs.remove[i](vnode, rm);\n }\n\n if (isDef(i = vnode.data.hook) && isDef(i = i.remove)) {\n i(vnode, rm);\n } else {\n rm();\n }\n } else {\n removeNode(vnode.elm);\n }\n }\n\n function updateChildren(parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) {\n var oldStartIdx = 0;\n var newStartIdx = 0;\n var oldEndIdx = oldCh.length - 1;\n var oldStartVnode = oldCh[0];\n var oldEndVnode = oldCh[oldEndIdx];\n var newEndIdx = newCh.length - 1;\n var newStartVnode = newCh[0];\n var newEndVnode = newCh[newEndIdx];\n var oldKeyToIdx, idxInOld, vnodeToMove, refElm; // removeOnly is a special flag used only by <transition-group>\n // to ensure removed elements stay in correct relative positions\n // during leaving transitions\n\n var canMove = !removeOnly;\n\n if (process.env.NODE_ENV !== 'production') {\n checkDuplicateKeys(newCh);\n }\n\n while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {\n if (isUndef(oldStartVnode)) {\n oldStartVnode = oldCh[++oldStartIdx]; // Vnode has been moved left\n } else if (isUndef(oldEndVnode)) {\n oldEndVnode = oldCh[--oldEndIdx];\n } else if (sameVnode(oldStartVnode, newStartVnode)) {\n patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);\n oldStartVnode = oldCh[++oldStartIdx];\n newStartVnode = newCh[++newStartIdx];\n } else if (sameVnode(oldEndVnode, newEndVnode)) {\n patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);\n oldEndVnode = oldCh[--oldEndIdx];\n newEndVnode = newCh[--newEndIdx];\n } else if (sameVnode(oldStartVnode, newEndVnode)) {\n // Vnode moved right\n patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);\n canMove && nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm));\n oldStartVnode = oldCh[++oldStartIdx];\n newEndVnode = newCh[--newEndIdx];\n } else if (sameVnode(oldEndVnode, newStartVnode)) {\n // Vnode moved left\n patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);\n canMove && nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm);\n oldEndVnode = oldCh[--oldEndIdx];\n newStartVnode = newCh[++newStartIdx];\n } else {\n if (isUndef(oldKeyToIdx)) {\n oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx);\n }\n\n idxInOld = isDef(newStartVnode.key) ? oldKeyToIdx[newStartVnode.key] : findIdxInOld(newStartVnode, oldCh, oldStartIdx, oldEndIdx);\n\n if (isUndef(idxInOld)) {\n // New element\n createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);\n } else {\n vnodeToMove = oldCh[idxInOld];\n\n if (sameVnode(vnodeToMove, newStartVnode)) {\n patchVnode(vnodeToMove, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);\n oldCh[idxInOld] = undefined;\n canMove && nodeOps.insertBefore(parentElm, vnodeToMove.elm, oldStartVnode.elm);\n } else {\n // same key but different element. treat as new element\n createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);\n }\n }\n\n newStartVnode = newCh[++newStartIdx];\n }\n }\n\n if (oldStartIdx > oldEndIdx) {\n refElm = isUndef(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;\n addVnodes(parentElm, refElm, newCh, newStartIdx, newEndIdx, insertedVnodeQueue);\n } else if (newStartIdx > newEndIdx) {\n removeVnodes(oldCh, oldStartIdx, oldEndIdx);\n }\n }\n\n function checkDuplicateKeys(children) {\n var seenKeys = {};\n\n for (var i = 0; i < children.length; i++) {\n var vnode = children[i];\n var key = vnode.key;\n\n if (isDef(key)) {\n if (seenKeys[key]) {\n warn(\"Duplicate keys detected: '\" + key + \"'. This may cause an update error.\", vnode.context);\n } else {\n seenKeys[key] = true;\n }\n }\n }\n }\n\n function findIdxInOld(node, oldCh, start, end) {\n for (var i = start; i < end; i++) {\n var c = oldCh[i];\n\n if (isDef(c) && sameVnode(node, c)) {\n return i;\n }\n }\n }\n\n function patchVnode(oldVnode, vnode, insertedVnodeQueue, ownerArray, index, removeOnly) {\n if (oldVnode === vnode) {\n return;\n }\n\n if (isDef(vnode.elm) && isDef(ownerArray)) {\n // clone reused vnode\n vnode = ownerArray[index] = cloneVNode(vnode);\n }\n\n var elm = vnode.elm = oldVnode.elm;\n\n if (isTrue(oldVnode.isAsyncPlaceholder)) {\n if (isDef(vnode.asyncFactory.resolved)) {\n hydrate(oldVnode.elm, vnode, insertedVnodeQueue);\n } else {\n vnode.isAsyncPlaceholder = true;\n }\n\n return;\n } // reuse element for static trees.\n // note we only do this if the vnode is cloned -\n // if the new node is not cloned it means the render functions have been\n // reset by the hot-reload-api and we need to do a proper re-render.\n\n\n if (isTrue(vnode.isStatic) && isTrue(oldVnode.isStatic) && vnode.key === oldVnode.key && (isTrue(vnode.isCloned) || isTrue(vnode.isOnce))) {\n vnode.componentInstance = oldVnode.componentInstance;\n return;\n }\n\n var i;\n var data = vnode.data;\n\n if (isDef(data) && isDef(i = data.hook) && isDef(i = i.prepatch)) {\n i(oldVnode, vnode);\n }\n\n var oldCh = oldVnode.children;\n var ch = vnode.children;\n\n if (isDef(data) && isPatchable(vnode)) {\n for (i = 0; i < cbs.update.length; ++i) {\n cbs.update[i](oldVnode, vnode);\n }\n\n if (isDef(i = data.hook) && isDef(i = i.update)) {\n i(oldVnode, vnode);\n }\n }\n\n if (isUndef(vnode.text)) {\n if (isDef(oldCh) && isDef(ch)) {\n if (oldCh !== ch) {\n updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly);\n }\n } else if (isDef(ch)) {\n if (process.env.NODE_ENV !== 'production') {\n checkDuplicateKeys(ch);\n }\n\n if (isDef(oldVnode.text)) {\n nodeOps.setTextContent(elm, '');\n }\n\n addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue);\n } else if (isDef(oldCh)) {\n removeVnodes(oldCh, 0, oldCh.length - 1);\n } else if (isDef(oldVnode.text)) {\n nodeOps.setTextContent(elm, '');\n }\n } else if (oldVnode.text !== vnode.text) {\n nodeOps.setTextContent(elm, vnode.text);\n }\n\n if (isDef(data)) {\n if (isDef(i = data.hook) && isDef(i = i.postpatch)) {\n i(oldVnode, vnode);\n }\n }\n }\n\n function invokeInsertHook(vnode, queue, initial) {\n // delay insert hooks for component root nodes, invoke them after the\n // element is really inserted\n if (isTrue(initial) && isDef(vnode.parent)) {\n vnode.parent.data.pendingInsert = queue;\n } else {\n for (var i = 0; i < queue.length; ++i) {\n queue[i].data.hook.insert(queue[i]);\n }\n }\n }\n\n var hydrationBailed = false; // list of modules that can skip create hook during hydration because they\n // are already rendered on the client or has no need for initialization\n // Note: style is excluded because it relies on initial clone for future\n // deep updates (#7063).\n\n var isRenderedModule = makeMap('attrs,class,staticClass,staticStyle,key'); // Note: this is a browser-only function so we can assume elms are DOM nodes.\n\n function hydrate(elm, vnode, insertedVnodeQueue, inVPre) {\n var i;\n var tag = vnode.tag;\n var data = vnode.data;\n var children = vnode.children;\n inVPre = inVPre || data && data.pre;\n vnode.elm = elm;\n\n if (isTrue(vnode.isComment) && isDef(vnode.asyncFactory)) {\n vnode.isAsyncPlaceholder = true;\n return true;\n } // assert node match\n\n\n if (process.env.NODE_ENV !== 'production') {\n if (!assertNodeMatch(elm, vnode, inVPre)) {\n return false;\n }\n }\n\n if (isDef(data)) {\n if (isDef(i = data.hook) && isDef(i = i.init)) {\n i(vnode, true\n /* hydrating */\n );\n }\n\n if (isDef(i = vnode.componentInstance)) {\n // child component. it should have hydrated its own tree.\n initComponent(vnode, insertedVnodeQueue);\n return true;\n }\n }\n\n if (isDef(tag)) {\n if (isDef(children)) {\n // empty element, allow client to pick up and populate children\n if (!elm.hasChildNodes()) {\n createChildren(vnode, children, insertedVnodeQueue);\n } else {\n // v-html and domProps: innerHTML\n if (isDef(i = data) && isDef(i = i.domProps) && isDef(i = i.innerHTML)) {\n if (i !== elm.innerHTML) {\n /* istanbul ignore if */\n if (process.env.NODE_ENV !== 'production' && typeof console !== 'undefined' && !hydrationBailed) {\n hydrationBailed = true;\n console.warn('Parent: ', elm);\n console.warn('server innerHTML: ', i);\n console.warn('client innerHTML: ', elm.innerHTML);\n }\n\n return false;\n }\n } else {\n // iterate and compare children lists\n var childrenMatch = true;\n var childNode = elm.firstChild;\n\n for (var i$1 = 0; i$1 < children.length; i$1++) {\n if (!childNode || !hydrate(childNode, children[i$1], insertedVnodeQueue, inVPre)) {\n childrenMatch = false;\n break;\n }\n\n childNode = childNode.nextSibling;\n } // if childNode is not null, it means the actual childNodes list is\n // longer than the virtual children list.\n\n\n if (!childrenMatch || childNode) {\n /* istanbul ignore if */\n if (process.env.NODE_ENV !== 'production' && typeof console !== 'undefined' && !hydrationBailed) {\n hydrationBailed = true;\n console.warn('Parent: ', elm);\n console.warn('Mismatching childNodes vs. VNodes: ', elm.childNodes, children);\n }\n\n return false;\n }\n }\n }\n }\n\n if (isDef(data)) {\n var fullInvoke = false;\n\n for (var key in data) {\n if (!isRenderedModule(key)) {\n fullInvoke = true;\n invokeCreateHooks(vnode, insertedVnodeQueue);\n break;\n }\n }\n\n if (!fullInvoke && data['class']) {\n // ensure collecting deps for deep class bindings for future updates\n traverse(data['class']);\n }\n }\n } else if (elm.data !== vnode.text) {\n elm.data = vnode.text;\n }\n\n return true;\n }\n\n function assertNodeMatch(node, vnode, inVPre) {\n if (isDef(vnode.tag)) {\n return vnode.tag.indexOf('vue-component') === 0 || !isUnknownElement$$1(vnode, inVPre) && vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase());\n } else {\n return node.nodeType === (vnode.isComment ? 8 : 3);\n }\n }\n\n return function patch(oldVnode, vnode, hydrating, removeOnly) {\n if (isUndef(vnode)) {\n if (isDef(oldVnode)) {\n invokeDestroyHook(oldVnode);\n }\n\n return;\n }\n\n var isInitialPatch = false;\n var insertedVnodeQueue = [];\n\n if (isUndef(oldVnode)) {\n // empty mount (likely as component), create new root element\n isInitialPatch = true;\n createElm(vnode, insertedVnodeQueue);\n } else {\n var isRealElement = isDef(oldVnode.nodeType);\n\n if (!isRealElement && sameVnode(oldVnode, vnode)) {\n // patch existing root node\n patchVnode(oldVnode, vnode, insertedVnodeQueue, null, null, removeOnly);\n } else {\n if (isRealElement) {\n // mounting to a real element\n // check if this is server-rendered content and if we can perform\n // a successful hydration.\n if (oldVnode.nodeType === 1 && oldVnode.hasAttribute(SSR_ATTR)) {\n oldVnode.removeAttribute(SSR_ATTR);\n hydrating = true;\n }\n\n if (isTrue(hydrating)) {\n if (hydrate(oldVnode, vnode, insertedVnodeQueue)) {\n invokeInsertHook(vnode, insertedVnodeQueue, true);\n return oldVnode;\n } else if (process.env.NODE_ENV !== 'production') {\n warn('The client-side rendered virtual DOM tree is not matching ' + 'server-rendered content. This is likely caused by incorrect ' + 'HTML markup, for example nesting block-level elements inside ' + '<p>, or missing <tbody>. Bailing hydration and performing ' + 'full client-side render.');\n }\n } // either not server-rendered, or hydration failed.\n // create an empty node and replace it\n\n\n oldVnode = emptyNodeAt(oldVnode);\n } // replacing existing element\n\n\n var oldElm = oldVnode.elm;\n var parentElm = nodeOps.parentNode(oldElm); // create new node\n\n createElm(vnode, insertedVnodeQueue, // extremely rare edge case: do not insert if old element is in a\n // leaving transition. Only happens when combining transition +\n // keep-alive + HOCs. (#4590)\n oldElm._leaveCb ? null : parentElm, nodeOps.nextSibling(oldElm)); // update parent placeholder node element, recursively\n\n if (isDef(vnode.parent)) {\n var ancestor = vnode.parent;\n var patchable = isPatchable(vnode);\n\n while (ancestor) {\n for (var i = 0; i < cbs.destroy.length; ++i) {\n cbs.destroy[i](ancestor);\n }\n\n ancestor.elm = vnode.elm;\n\n if (patchable) {\n for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {\n cbs.create[i$1](emptyNode, ancestor);\n } // #6513\n // invoke insert hooks that may have been merged by create hooks.\n // e.g. for directives that uses the \"inserted\" hook.\n\n\n var insert = ancestor.data.hook.insert;\n\n if (insert.merged) {\n // start at index 1 to avoid re-invoking component mounted hook\n for (var i$2 = 1; i$2 < insert.fns.length; i$2++) {\n insert.fns[i$2]();\n }\n }\n } else {\n registerRef(ancestor);\n }\n\n ancestor = ancestor.parent;\n }\n } // destroy old node\n\n\n if (isDef(parentElm)) {\n removeVnodes([oldVnode], 0, 0);\n } else if (isDef(oldVnode.tag)) {\n invokeDestroyHook(oldVnode);\n }\n }\n }\n\n invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch);\n return vnode.elm;\n };\n}\n/* */\n\n\nvar directives = {\n create: updateDirectives,\n update: updateDirectives,\n destroy: function unbindDirectives(vnode) {\n updateDirectives(vnode, emptyNode);\n }\n};\n\nfunction updateDirectives(oldVnode, vnode) {\n if (oldVnode.data.directives || vnode.data.directives) {\n _update(oldVnode, vnode);\n }\n}\n\nfunction _update(oldVnode, vnode) {\n var isCreate = oldVnode === emptyNode;\n var isDestroy = vnode === emptyNode;\n var oldDirs = normalizeDirectives$1(oldVnode.data.directives, oldVnode.context);\n var newDirs = normalizeDirectives$1(vnode.data.directives, vnode.context);\n var dirsWithInsert = [];\n var dirsWithPostpatch = [];\n var key, oldDir, dir;\n\n for (key in newDirs) {\n oldDir = oldDirs[key];\n dir = newDirs[key];\n\n if (!oldDir) {\n // new directive, bind\n callHook$1(dir, 'bind', vnode, oldVnode);\n\n if (dir.def && dir.def.inserted) {\n dirsWithInsert.push(dir);\n }\n } else {\n // existing directive, update\n dir.oldValue = oldDir.value;\n dir.oldArg = oldDir.arg;\n callHook$1(dir, 'update', vnode, oldVnode);\n\n if (dir.def && dir.def.componentUpdated) {\n dirsWithPostpatch.push(dir);\n }\n }\n }\n\n if (dirsWithInsert.length) {\n var callInsert = function () {\n for (var i = 0; i < dirsWithInsert.length; i++) {\n callHook$1(dirsWithInsert[i], 'inserted', vnode, oldVnode);\n }\n };\n\n if (isCreate) {\n mergeVNodeHook(vnode, 'insert', callInsert);\n } else {\n callInsert();\n }\n }\n\n if (dirsWithPostpatch.length) {\n mergeVNodeHook(vnode, 'postpatch', function () {\n for (var i = 0; i < dirsWithPostpatch.length; i++) {\n callHook$1(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode);\n }\n });\n }\n\n if (!isCreate) {\n for (key in oldDirs) {\n if (!newDirs[key]) {\n // no longer present, unbind\n callHook$1(oldDirs[key], 'unbind', oldVnode, oldVnode, isDestroy);\n }\n }\n }\n}\n\nvar emptyModifiers = Object.create(null);\n\nfunction normalizeDirectives$1(dirs, vm) {\n var res = Object.create(null);\n\n if (!dirs) {\n // $flow-disable-line\n return res;\n }\n\n var i, dir;\n\n for (i = 0; i < dirs.length; i++) {\n dir = dirs[i];\n\n if (!dir.modifiers) {\n // $flow-disable-line\n dir.modifiers = emptyModifiers;\n }\n\n res[getRawDirName(dir)] = dir;\n dir.def = resolveAsset(vm.$options, 'directives', dir.name, true);\n } // $flow-disable-line\n\n\n return res;\n}\n\nfunction getRawDirName(dir) {\n return dir.rawName || dir.name + \".\" + Object.keys(dir.modifiers || {}).join('.');\n}\n\nfunction callHook$1(dir, hook, vnode, oldVnode, isDestroy) {\n var fn = dir.def && dir.def[hook];\n\n if (fn) {\n try {\n fn(vnode.elm, dir, vnode, oldVnode, isDestroy);\n } catch (e) {\n handleError(e, vnode.context, \"directive \" + dir.name + \" \" + hook + \" hook\");\n }\n }\n}\n\nvar baseModules = [ref, directives];\n/* */\n\nfunction updateAttrs(oldVnode, vnode) {\n var opts = vnode.componentOptions;\n\n if (isDef(opts) && opts.Ctor.options.inheritAttrs === false) {\n return;\n }\n\n if (isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) {\n return;\n }\n\n var key, cur, old;\n var elm = vnode.elm;\n var oldAttrs = oldVnode.data.attrs || {};\n var attrs = vnode.data.attrs || {}; // clone observed objects, as the user probably wants to mutate it\n\n if (isDef(attrs.__ob__)) {\n attrs = vnode.data.attrs = extend({}, attrs);\n }\n\n for (key in attrs) {\n cur = attrs[key];\n old = oldAttrs[key];\n\n if (old !== cur) {\n setAttr(elm, key, cur, vnode.data.pre);\n }\n } // #4391: in IE9, setting type can reset value for input[type=radio]\n // #6666: IE/Edge forces progress value down to 1 before setting a max\n\n /* istanbul ignore if */\n\n\n if ((isIE || isEdge) && attrs.value !== oldAttrs.value) {\n setAttr(elm, 'value', attrs.value);\n }\n\n for (key in oldAttrs) {\n if (isUndef(attrs[key])) {\n if (isXlink(key)) {\n elm.removeAttributeNS(xlinkNS, getXlinkProp(key));\n } else if (!isEnumeratedAttr(key)) {\n elm.removeAttribute(key);\n }\n }\n }\n}\n\nfunction setAttr(el, key, value, isInPre) {\n if (isInPre || el.tagName.indexOf('-') > -1) {\n baseSetAttr(el, key, value);\n } else if (isBooleanAttr(key)) {\n // set attribute for blank value\n // e.g. <option disabled>Select one</option>\n if (isFalsyAttrValue(value)) {\n el.removeAttribute(key);\n } else {\n // technically allowfullscreen is a boolean attribute for <iframe>,\n // but Flash expects a value of \"true\" when used on <embed> tag\n value = key === 'allowfullscreen' && el.tagName === 'EMBED' ? 'true' : key;\n el.setAttribute(key, value);\n }\n } else if (isEnumeratedAttr(key)) {\n el.setAttribute(key, convertEnumeratedValue(key, value));\n } else if (isXlink(key)) {\n if (isFalsyAttrValue(value)) {\n el.removeAttributeNS(xlinkNS, getXlinkProp(key));\n } else {\n el.setAttributeNS(xlinkNS, key, value);\n }\n } else {\n baseSetAttr(el, key, value);\n }\n}\n\nfunction baseSetAttr(el, key, value) {\n if (isFalsyAttrValue(value)) {\n el.removeAttribute(key);\n } else {\n // #7138: IE10 & 11 fires input event when setting placeholder on\n // <textarea>... block the first input event and remove the blocker\n // immediately.\n\n /* istanbul ignore if */\n if (isIE && !isIE9 && el.tagName === 'TEXTAREA' && key === 'placeholder' && value !== '' && !el.__ieph) {\n var blocker = function (e) {\n e.stopImmediatePropagation();\n el.removeEventListener('input', blocker);\n };\n\n el.addEventListener('input', blocker); // $flow-disable-line\n\n el.__ieph = true;\n /* IE placeholder patched */\n }\n\n el.setAttribute(key, value);\n }\n}\n\nvar attrs = {\n create: updateAttrs,\n update: updateAttrs\n};\n/* */\n\nfunction updateClass(oldVnode, vnode) {\n var el = vnode.elm;\n var data = vnode.data;\n var oldData = oldVnode.data;\n\n if (isUndef(data.staticClass) && isUndef(data.class) && (isUndef(oldData) || isUndef(oldData.staticClass) && isUndef(oldData.class))) {\n return;\n }\n\n var cls = genClassForVnode(vnode); // handle transition classes\n\n var transitionClass = el._transitionClasses;\n\n if (isDef(transitionClass)) {\n cls = concat(cls, stringifyClass(transitionClass));\n } // set the class\n\n\n if (cls !== el._prevClass) {\n el.setAttribute('class', cls);\n el._prevClass = cls;\n }\n}\n\nvar klass = {\n create: updateClass,\n update: updateClass\n};\n/* */\n\n/* */\n\n/* */\n\n/* */\n// in some cases, the event used has to be determined at runtime\n// so we used some reserved tokens during compile.\n\nvar RANGE_TOKEN = '__r';\nvar CHECKBOX_RADIO_TOKEN = '__c';\n/* */\n// normalize v-model event tokens that can only be determined at runtime.\n// it's important to place the event as the first in the array because\n// the whole point is ensuring the v-model callback gets called before\n// user-attached handlers.\n\nfunction normalizeEvents(on) {\n /* istanbul ignore if */\n if (isDef(on[RANGE_TOKEN])) {\n // IE input[type=range] only supports `change` event\n var event = isIE ? 'change' : 'input';\n on[event] = [].concat(on[RANGE_TOKEN], on[event] || []);\n delete on[RANGE_TOKEN];\n } // This was originally intended to fix #4521 but no longer necessary\n // after 2.5. Keeping it for backwards compat with generated code from < 2.4\n\n /* istanbul ignore if */\n\n\n if (isDef(on[CHECKBOX_RADIO_TOKEN])) {\n on.change = [].concat(on[CHECKBOX_RADIO_TOKEN], on.change || []);\n delete on[CHECKBOX_RADIO_TOKEN];\n }\n}\n\nvar target$1;\n\nfunction createOnceHandler$1(event, handler, capture) {\n var _target = target$1; // save current target element in closure\n\n return function onceHandler() {\n var res = handler.apply(null, arguments);\n\n if (res !== null) {\n remove$2(event, onceHandler, capture, _target);\n }\n };\n} // #9446: Firefox <= 53 (in particular, ESR 52) has incorrect Event.timeStamp\n// implementation and does not fire microtasks in between event propagation, so\n// safe to exclude.\n\n\nvar useMicrotaskFix = isUsingMicroTask && !(isFF && Number(isFF[1]) <= 53);\n\nfunction add$1(name, handler, capture, passive) {\n // async edge case #6566: inner click event triggers patch, event handler\n // attached to outer element during patch, and triggered again. This\n // happens because browsers fire microtask ticks between event propagation.\n // the solution is simple: we save the timestamp when a handler is attached,\n // and the handler would only fire if the event passed to it was fired\n // AFTER it was attached.\n if (useMicrotaskFix) {\n var attachedTimestamp = currentFlushTimestamp;\n var original = handler;\n\n handler = original._wrapper = function (e) {\n if ( // no bubbling, should always fire.\n // this is just a safety net in case event.timeStamp is unreliable in\n // certain weird environments...\n e.target === e.currentTarget || // event is fired after handler attachment\n e.timeStamp >= attachedTimestamp || // bail for environments that have buggy event.timeStamp implementations\n // #9462 iOS 9 bug: event.timeStamp is 0 after history.pushState\n // #9681 QtWebEngine event.timeStamp is negative value\n e.timeStamp <= 0 || // #9448 bail if event is fired in another document in a multi-page\n // electron/nw.js app, since event.timeStamp will be using a different\n // starting reference\n e.target.ownerDocument !== document) {\n return original.apply(this, arguments);\n }\n };\n }\n\n target$1.addEventListener(name, handler, supportsPassive ? {\n capture: capture,\n passive: passive\n } : capture);\n}\n\nfunction remove$2(name, handler, capture, _target) {\n (_target || target$1).removeEventListener(name, handler._wrapper || handler, capture);\n}\n\nfunction updateDOMListeners(oldVnode, vnode) {\n if (isUndef(oldVnode.data.on) && isUndef(vnode.data.on)) {\n return;\n }\n\n var on = vnode.data.on || {};\n var oldOn = oldVnode.data.on || {};\n target$1 = vnode.elm;\n normalizeEvents(on);\n updateListeners(on, oldOn, add$1, remove$2, createOnceHandler$1, vnode.context);\n target$1 = undefined;\n}\n\nvar events = {\n create: updateDOMListeners,\n update: updateDOMListeners\n};\n/* */\n\nvar svgContainer;\n\nfunction updateDOMProps(oldVnode, vnode) {\n if (isUndef(oldVnode.data.domProps) && isUndef(vnode.data.domProps)) {\n return;\n }\n\n var key, cur;\n var elm = vnode.elm;\n var oldProps = oldVnode.data.domProps || {};\n var props = vnode.data.domProps || {}; // clone observed objects, as the user probably wants to mutate it\n\n if (isDef(props.__ob__)) {\n props = vnode.data.domProps = extend({}, props);\n }\n\n for (key in oldProps) {\n if (!(key in props)) {\n elm[key] = '';\n }\n }\n\n for (key in props) {\n cur = props[key]; // ignore children if the node has textContent or innerHTML,\n // as these will throw away existing DOM nodes and cause removal errors\n // on subsequent patches (#3360)\n\n if (key === 'textContent' || key === 'innerHTML') {\n if (vnode.children) {\n vnode.children.length = 0;\n }\n\n if (cur === oldProps[key]) {\n continue;\n } // #6601 work around Chrome version <= 55 bug where single textNode\n // replaced by innerHTML/textContent retains its parentNode property\n\n\n if (elm.childNodes.length === 1) {\n elm.removeChild(elm.childNodes[0]);\n }\n }\n\n if (key === 'value' && elm.tagName !== 'PROGRESS') {\n // store value as _value as well since\n // non-string values will be stringified\n elm._value = cur; // avoid resetting cursor position when value is the same\n\n var strCur = isUndef(cur) ? '' : String(cur);\n\n if (shouldUpdateValue(elm, strCur)) {\n elm.value = strCur;\n }\n } else if (key === 'innerHTML' && isSVG(elm.tagName) && isUndef(elm.innerHTML)) {\n // IE doesn't support innerHTML for SVG elements\n svgContainer = svgContainer || document.createElement('div');\n svgContainer.innerHTML = \"<svg>\" + cur + \"</svg>\";\n var svg = svgContainer.firstChild;\n\n while (elm.firstChild) {\n elm.removeChild(elm.firstChild);\n }\n\n while (svg.firstChild) {\n elm.appendChild(svg.firstChild);\n }\n } else if ( // skip the update if old and new VDOM state is the same.\n // `value` is handled separately because the DOM value may be temporarily\n // out of sync with VDOM state due to focus, composition and modifiers.\n // This #4521 by skipping the unnecessary `checked` update.\n cur !== oldProps[key]) {\n // some property updates can throw\n // e.g. `value` on <progress> w/ non-finite value\n try {\n elm[key] = cur;\n } catch (e) {}\n }\n }\n} // check platforms/web/util/attrs.js acceptValue\n\n\nfunction shouldUpdateValue(elm, checkVal) {\n return !elm.composing && (elm.tagName === 'OPTION' || isNotInFocusAndDirty(elm, checkVal) || isDirtyWithModifiers(elm, checkVal));\n}\n\nfunction isNotInFocusAndDirty(elm, checkVal) {\n // return true when textbox (.number and .trim) loses focus and its value is\n // not equal to the updated value\n var notInFocus = true; // #6157\n // work around IE bug when accessing document.activeElement in an iframe\n\n try {\n notInFocus = document.activeElement !== elm;\n } catch (e) {}\n\n return notInFocus && elm.value !== checkVal;\n}\n\nfunction isDirtyWithModifiers(elm, newVal) {\n var value = elm.value;\n var modifiers = elm._vModifiers; // injected by v-model runtime\n\n if (isDef(modifiers)) {\n if (modifiers.number) {\n return toNumber(value) !== toNumber(newVal);\n }\n\n if (modifiers.trim) {\n return value.trim() !== newVal.trim();\n }\n }\n\n return value !== newVal;\n}\n\nvar domProps = {\n create: updateDOMProps,\n update: updateDOMProps\n};\n/* */\n\nvar parseStyleText = cached(function (cssText) {\n var res = {};\n var listDelimiter = /;(?![^(]*\\))/g;\n var propertyDelimiter = /:(.+)/;\n cssText.split(listDelimiter).forEach(function (item) {\n if (item) {\n var tmp = item.split(propertyDelimiter);\n tmp.length > 1 && (res[tmp[0].trim()] = tmp[1].trim());\n }\n });\n return res;\n}); // merge static and dynamic style data on the same vnode\n\nfunction normalizeStyleData(data) {\n var style = normalizeStyleBinding(data.style); // static style is pre-processed into an object during compilation\n // and is always a fresh object, so it's safe to merge into it\n\n return data.staticStyle ? extend(data.staticStyle, style) : style;\n} // normalize possible array / string values into Object\n\n\nfunction normalizeStyleBinding(bindingStyle) {\n if (Array.isArray(bindingStyle)) {\n return toObject(bindingStyle);\n }\n\n if (typeof bindingStyle === 'string') {\n return parseStyleText(bindingStyle);\n }\n\n return bindingStyle;\n}\n/**\n * parent component style should be after child's\n * so that parent component's style could override it\n */\n\n\nfunction getStyle(vnode, checkChild) {\n var res = {};\n var styleData;\n\n if (checkChild) {\n var childNode = vnode;\n\n while (childNode.componentInstance) {\n childNode = childNode.componentInstance._vnode;\n\n if (childNode && childNode.data && (styleData = normalizeStyleData(childNode.data))) {\n extend(res, styleData);\n }\n }\n }\n\n if (styleData = normalizeStyleData(vnode.data)) {\n extend(res, styleData);\n }\n\n var parentNode = vnode;\n\n while (parentNode = parentNode.parent) {\n if (parentNode.data && (styleData = normalizeStyleData(parentNode.data))) {\n extend(res, styleData);\n }\n }\n\n return res;\n}\n/* */\n\n\nvar cssVarRE = /^--/;\nvar importantRE = /\\s*!important$/;\n\nvar setProp = function (el, name, val) {\n /* istanbul ignore if */\n if (cssVarRE.test(name)) {\n el.style.setProperty(name, val);\n } else if (importantRE.test(val)) {\n el.style.setProperty(hyphenate(name), val.replace(importantRE, ''), 'important');\n } else {\n var normalizedName = normalize(name);\n\n if (Array.isArray(val)) {\n // Support values array created by autoprefixer, e.g.\n // {display: [\"-webkit-box\", \"-ms-flexbox\", \"flex\"]}\n // Set them one by one, and the browser will only set those it can recognize\n for (var i = 0, len = val.length; i < len; i++) {\n el.style[normalizedName] = val[i];\n }\n } else {\n el.style[normalizedName] = val;\n }\n }\n};\n\nvar vendorNames = ['Webkit', 'Moz', 'ms'];\nvar emptyStyle;\nvar normalize = cached(function (prop) {\n emptyStyle = emptyStyle || document.createElement('div').style;\n prop = camelize(prop);\n\n if (prop !== 'filter' && prop in emptyStyle) {\n return prop;\n }\n\n var capName = prop.charAt(0).toUpperCase() + prop.slice(1);\n\n for (var i = 0; i < vendorNames.length; i++) {\n var name = vendorNames[i] + capName;\n\n if (name in emptyStyle) {\n return name;\n }\n }\n});\n\nfunction updateStyle(oldVnode, vnode) {\n var data = vnode.data;\n var oldData = oldVnode.data;\n\n if (isUndef(data.staticStyle) && isUndef(data.style) && isUndef(oldData.staticStyle) && isUndef(oldData.style)) {\n return;\n }\n\n var cur, name;\n var el = vnode.elm;\n var oldStaticStyle = oldData.staticStyle;\n var oldStyleBinding = oldData.normalizedStyle || oldData.style || {}; // if static style exists, stylebinding already merged into it when doing normalizeStyleData\n\n var oldStyle = oldStaticStyle || oldStyleBinding;\n var style = normalizeStyleBinding(vnode.data.style) || {}; // store normalized style under a different key for next diff\n // make sure to clone it if it's reactive, since the user likely wants\n // to mutate it.\n\n vnode.data.normalizedStyle = isDef(style.__ob__) ? extend({}, style) : style;\n var newStyle = getStyle(vnode, true);\n\n for (name in oldStyle) {\n if (isUndef(newStyle[name])) {\n setProp(el, name, '');\n }\n }\n\n for (name in newStyle) {\n cur = newStyle[name];\n\n if (cur !== oldStyle[name]) {\n // ie9 setting to null has no effect, must use empty string\n setProp(el, name, cur == null ? '' : cur);\n }\n }\n}\n\nvar style = {\n create: updateStyle,\n update: updateStyle\n};\n/* */\n\nvar whitespaceRE = /\\s+/;\n/**\n * Add class with compatibility for SVG since classList is not supported on\n * SVG elements in IE\n */\n\nfunction addClass(el, cls) {\n /* istanbul ignore if */\n if (!cls || !(cls = cls.trim())) {\n return;\n }\n /* istanbul ignore else */\n\n\n if (el.classList) {\n if (cls.indexOf(' ') > -1) {\n cls.split(whitespaceRE).forEach(function (c) {\n return el.classList.add(c);\n });\n } else {\n el.classList.add(cls);\n }\n } else {\n var cur = \" \" + (el.getAttribute('class') || '') + \" \";\n\n if (cur.indexOf(' ' + cls + ' ') < 0) {\n el.setAttribute('class', (cur + cls).trim());\n }\n }\n}\n/**\n * Remove class with compatibility for SVG since classList is not supported on\n * SVG elements in IE\n */\n\n\nfunction removeClass(el, cls) {\n /* istanbul ignore if */\n if (!cls || !(cls = cls.trim())) {\n return;\n }\n /* istanbul ignore else */\n\n\n if (el.classList) {\n if (cls.indexOf(' ') > -1) {\n cls.split(whitespaceRE).forEach(function (c) {\n return el.classList.remove(c);\n });\n } else {\n el.classList.remove(cls);\n }\n\n if (!el.classList.length) {\n el.removeAttribute('class');\n }\n } else {\n var cur = \" \" + (el.getAttribute('class') || '') + \" \";\n var tar = ' ' + cls + ' ';\n\n while (cur.indexOf(tar) >= 0) {\n cur = cur.replace(tar, ' ');\n }\n\n cur = cur.trim();\n\n if (cur) {\n el.setAttribute('class', cur);\n } else {\n el.removeAttribute('class');\n }\n }\n}\n/* */\n\n\nfunction resolveTransition(def$$1) {\n if (!def$$1) {\n return;\n }\n /* istanbul ignore else */\n\n\n if (typeof def$$1 === 'object') {\n var res = {};\n\n if (def$$1.css !== false) {\n extend(res, autoCssTransition(def$$1.name || 'v'));\n }\n\n extend(res, def$$1);\n return res;\n } else if (typeof def$$1 === 'string') {\n return autoCssTransition(def$$1);\n }\n}\n\nvar autoCssTransition = cached(function (name) {\n return {\n enterClass: name + \"-enter\",\n enterToClass: name + \"-enter-to\",\n enterActiveClass: name + \"-enter-active\",\n leaveClass: name + \"-leave\",\n leaveToClass: name + \"-leave-to\",\n leaveActiveClass: name + \"-leave-active\"\n };\n});\nvar hasTransition = inBrowser && !isIE9;\nvar TRANSITION = 'transition';\nvar ANIMATION = 'animation'; // Transition property/event sniffing\n\nvar transitionProp = 'transition';\nvar transitionEndEvent = 'transitionend';\nvar animationProp = 'animation';\nvar animationEndEvent = 'animationend';\n\nif (hasTransition) {\n /* istanbul ignore if */\n if (window.ontransitionend === undefined && window.onwebkittransitionend !== undefined) {\n transitionProp = 'WebkitTransition';\n transitionEndEvent = 'webkitTransitionEnd';\n }\n\n if (window.onanimationend === undefined && window.onwebkitanimationend !== undefined) {\n animationProp = 'WebkitAnimation';\n animationEndEvent = 'webkitAnimationEnd';\n }\n} // binding to window is necessary to make hot reload work in IE in strict mode\n\n\nvar raf = inBrowser ? window.requestAnimationFrame ? window.requestAnimationFrame.bind(window) : setTimeout :\n/* istanbul ignore next */\nfunction (fn) {\n return fn();\n};\n\nfunction nextFrame(fn) {\n raf(function () {\n raf(fn);\n });\n}\n\nfunction addTransitionClass(el, cls) {\n var transitionClasses = el._transitionClasses || (el._transitionClasses = []);\n\n if (transitionClasses.indexOf(cls) < 0) {\n transitionClasses.push(cls);\n addClass(el, cls);\n }\n}\n\nfunction removeTransitionClass(el, cls) {\n if (el._transitionClasses) {\n remove(el._transitionClasses, cls);\n }\n\n removeClass(el, cls);\n}\n\nfunction whenTransitionEnds(el, expectedType, cb) {\n var ref = getTransitionInfo(el, expectedType);\n var type = ref.type;\n var timeout = ref.timeout;\n var propCount = ref.propCount;\n\n if (!type) {\n return cb();\n }\n\n var event = type === TRANSITION ? transitionEndEvent : animationEndEvent;\n var ended = 0;\n\n var end = function () {\n el.removeEventListener(event, onEnd);\n cb();\n };\n\n var onEnd = function (e) {\n if (e.target === el) {\n if (++ended >= propCount) {\n end();\n }\n }\n };\n\n setTimeout(function () {\n if (ended < propCount) {\n end();\n }\n }, timeout + 1);\n el.addEventListener(event, onEnd);\n}\n\nvar transformRE = /\\b(transform|all)(,|$)/;\n\nfunction getTransitionInfo(el, expectedType) {\n var styles = window.getComputedStyle(el); // JSDOM may return undefined for transition properties\n\n var transitionDelays = (styles[transitionProp + 'Delay'] || '').split(', ');\n var transitionDurations = (styles[transitionProp + 'Duration'] || '').split(', ');\n var transitionTimeout = getTimeout(transitionDelays, transitionDurations);\n var animationDelays = (styles[animationProp + 'Delay'] || '').split(', ');\n var animationDurations = (styles[animationProp + 'Duration'] || '').split(', ');\n var animationTimeout = getTimeout(animationDelays, animationDurations);\n var type;\n var timeout = 0;\n var propCount = 0;\n /* istanbul ignore if */\n\n if (expectedType === TRANSITION) {\n if (transitionTimeout > 0) {\n type = TRANSITION;\n timeout = transitionTimeout;\n propCount = transitionDurations.length;\n }\n } else if (expectedType === ANIMATION) {\n if (animationTimeout > 0) {\n type = ANIMATION;\n timeout = animationTimeout;\n propCount = animationDurations.length;\n }\n } else {\n timeout = Math.max(transitionTimeout, animationTimeout);\n type = timeout > 0 ? transitionTimeout > animationTimeout ? TRANSITION : ANIMATION : null;\n propCount = type ? type === TRANSITION ? transitionDurations.length : animationDurations.length : 0;\n }\n\n var hasTransform = type === TRANSITION && transformRE.test(styles[transitionProp + 'Property']);\n return {\n type: type,\n timeout: timeout,\n propCount: propCount,\n hasTransform: hasTransform\n };\n}\n\nfunction getTimeout(delays, durations) {\n /* istanbul ignore next */\n while (delays.length < durations.length) {\n delays = delays.concat(delays);\n }\n\n return Math.max.apply(null, durations.map(function (d, i) {\n return toMs(d) + toMs(delays[i]);\n }));\n} // Old versions of Chromium (below 61.0.3163.100) formats floating pointer numbers\n// in a locale-dependent way, using a comma instead of a dot.\n// If comma is not replaced with a dot, the input will be rounded down (i.e. acting\n// as a floor function) causing unexpected behaviors\n\n\nfunction toMs(s) {\n return Number(s.slice(0, -1).replace(',', '.')) * 1000;\n}\n/* */\n\n\nfunction enter(vnode, toggleDisplay) {\n var el = vnode.elm; // call leave callback now\n\n if (isDef(el._leaveCb)) {\n el._leaveCb.cancelled = true;\n\n el._leaveCb();\n }\n\n var data = resolveTransition(vnode.data.transition);\n\n if (isUndef(data)) {\n return;\n }\n /* istanbul ignore if */\n\n\n if (isDef(el._enterCb) || el.nodeType !== 1) {\n return;\n }\n\n var css = data.css;\n var type = data.type;\n var enterClass = data.enterClass;\n var enterToClass = data.enterToClass;\n var enterActiveClass = data.enterActiveClass;\n var appearClass = data.appearClass;\n var appearToClass = data.appearToClass;\n var appearActiveClass = data.appearActiveClass;\n var beforeEnter = data.beforeEnter;\n var enter = data.enter;\n var afterEnter = data.afterEnter;\n var enterCancelled = data.enterCancelled;\n var beforeAppear = data.beforeAppear;\n var appear = data.appear;\n var afterAppear = data.afterAppear;\n var appearCancelled = data.appearCancelled;\n var duration = data.duration; // activeInstance will always be the <transition> component managing this\n // transition. One edge case to check is when the <transition> is placed\n // as the root node of a child component. In that case we need to check\n // <transition>'s parent for appear check.\n\n var context = activeInstance;\n var transitionNode = activeInstance.$vnode;\n\n while (transitionNode && transitionNode.parent) {\n context = transitionNode.context;\n transitionNode = transitionNode.parent;\n }\n\n var isAppear = !context._isMounted || !vnode.isRootInsert;\n\n if (isAppear && !appear && appear !== '') {\n return;\n }\n\n var startClass = isAppear && appearClass ? appearClass : enterClass;\n var activeClass = isAppear && appearActiveClass ? appearActiveClass : enterActiveClass;\n var toClass = isAppear && appearToClass ? appearToClass : enterToClass;\n var beforeEnterHook = isAppear ? beforeAppear || beforeEnter : beforeEnter;\n var enterHook = isAppear ? typeof appear === 'function' ? appear : enter : enter;\n var afterEnterHook = isAppear ? afterAppear || afterEnter : afterEnter;\n var enterCancelledHook = isAppear ? appearCancelled || enterCancelled : enterCancelled;\n var explicitEnterDuration = toNumber(isObject(duration) ? duration.enter : duration);\n\n if (process.env.NODE_ENV !== 'production' && explicitEnterDuration != null) {\n checkDuration(explicitEnterDuration, 'enter', vnode);\n }\n\n var expectsCSS = css !== false && !isIE9;\n var userWantsControl = getHookArgumentsLength(enterHook);\n var cb = el._enterCb = once(function () {\n if (expectsCSS) {\n removeTransitionClass(el, toClass);\n removeTransitionClass(el, activeClass);\n }\n\n if (cb.cancelled) {\n if (expectsCSS) {\n removeTransitionClass(el, startClass);\n }\n\n enterCancelledHook && enterCancelledHook(el);\n } else {\n afterEnterHook && afterEnterHook(el);\n }\n\n el._enterCb = null;\n });\n\n if (!vnode.data.show) {\n // remove pending leave element on enter by injecting an insert hook\n mergeVNodeHook(vnode, 'insert', function () {\n var parent = el.parentNode;\n var pendingNode = parent && parent._pending && parent._pending[vnode.key];\n\n if (pendingNode && pendingNode.tag === vnode.tag && pendingNode.elm._leaveCb) {\n pendingNode.elm._leaveCb();\n }\n\n enterHook && enterHook(el, cb);\n });\n } // start enter transition\n\n\n beforeEnterHook && beforeEnterHook(el);\n\n if (expectsCSS) {\n addTransitionClass(el, startClass);\n addTransitionClass(el, activeClass);\n nextFrame(function () {\n removeTransitionClass(el, startClass);\n\n if (!cb.cancelled) {\n addTransitionClass(el, toClass);\n\n if (!userWantsControl) {\n if (isValidDuration(explicitEnterDuration)) {\n setTimeout(cb, explicitEnterDuration);\n } else {\n whenTransitionEnds(el, type, cb);\n }\n }\n }\n });\n }\n\n if (vnode.data.show) {\n toggleDisplay && toggleDisplay();\n enterHook && enterHook(el, cb);\n }\n\n if (!expectsCSS && !userWantsControl) {\n cb();\n }\n}\n\nfunction leave(vnode, rm) {\n var el = vnode.elm; // call enter callback now\n\n if (isDef(el._enterCb)) {\n el._enterCb.cancelled = true;\n\n el._enterCb();\n }\n\n var data = resolveTransition(vnode.data.transition);\n\n if (isUndef(data) || el.nodeType !== 1) {\n return rm();\n }\n /* istanbul ignore if */\n\n\n if (isDef(el._leaveCb)) {\n return;\n }\n\n var css = data.css;\n var type = data.type;\n var leaveClass = data.leaveClass;\n var leaveToClass = data.leaveToClass;\n var leaveActiveClass = data.leaveActiveClass;\n var beforeLeave = data.beforeLeave;\n var leave = data.leave;\n var afterLeave = data.afterLeave;\n var leaveCancelled = data.leaveCancelled;\n var delayLeave = data.delayLeave;\n var duration = data.duration;\n var expectsCSS = css !== false && !isIE9;\n var userWantsControl = getHookArgumentsLength(leave);\n var explicitLeaveDuration = toNumber(isObject(duration) ? duration.leave : duration);\n\n if (process.env.NODE_ENV !== 'production' && isDef(explicitLeaveDuration)) {\n checkDuration(explicitLeaveDuration, 'leave', vnode);\n }\n\n var cb = el._leaveCb = once(function () {\n if (el.parentNode && el.parentNode._pending) {\n el.parentNode._pending[vnode.key] = null;\n }\n\n if (expectsCSS) {\n removeTransitionClass(el, leaveToClass);\n removeTransitionClass(el, leaveActiveClass);\n }\n\n if (cb.cancelled) {\n if (expectsCSS) {\n removeTransitionClass(el, leaveClass);\n }\n\n leaveCancelled && leaveCancelled(el);\n } else {\n rm();\n afterLeave && afterLeave(el);\n }\n\n el._leaveCb = null;\n });\n\n if (delayLeave) {\n delayLeave(performLeave);\n } else {\n performLeave();\n }\n\n function performLeave() {\n // the delayed leave may have already been cancelled\n if (cb.cancelled) {\n return;\n } // record leaving element\n\n\n if (!vnode.data.show && el.parentNode) {\n (el.parentNode._pending || (el.parentNode._pending = {}))[vnode.key] = vnode;\n }\n\n beforeLeave && beforeLeave(el);\n\n if (expectsCSS) {\n addTransitionClass(el, leaveClass);\n addTransitionClass(el, leaveActiveClass);\n nextFrame(function () {\n removeTransitionClass(el, leaveClass);\n\n if (!cb.cancelled) {\n addTransitionClass(el, leaveToClass);\n\n if (!userWantsControl) {\n if (isValidDuration(explicitLeaveDuration)) {\n setTimeout(cb, explicitLeaveDuration);\n } else {\n whenTransitionEnds(el, type, cb);\n }\n }\n }\n });\n }\n\n leave && leave(el, cb);\n\n if (!expectsCSS && !userWantsControl) {\n cb();\n }\n }\n} // only used in dev mode\n\n\nfunction checkDuration(val, name, vnode) {\n if (typeof val !== 'number') {\n warn(\"<transition> explicit \" + name + \" duration is not a valid number - \" + \"got \" + JSON.stringify(val) + \".\", vnode.context);\n } else if (isNaN(val)) {\n warn(\"<transition> explicit \" + name + \" duration is NaN - \" + 'the duration expression might be incorrect.', vnode.context);\n }\n}\n\nfunction isValidDuration(val) {\n return typeof val === 'number' && !isNaN(val);\n}\n/**\n * Normalize a transition hook's argument length. The hook may be:\n * - a merged hook (invoker) with the original in .fns\n * - a wrapped component method (check ._length)\n * - a plain function (.length)\n */\n\n\nfunction getHookArgumentsLength(fn) {\n if (isUndef(fn)) {\n return false;\n }\n\n var invokerFns = fn.fns;\n\n if (isDef(invokerFns)) {\n // invoker\n return getHookArgumentsLength(Array.isArray(invokerFns) ? invokerFns[0] : invokerFns);\n } else {\n return (fn._length || fn.length) > 1;\n }\n}\n\nfunction _enter(_, vnode) {\n if (vnode.data.show !== true) {\n enter(vnode);\n }\n}\n\nvar transition = inBrowser ? {\n create: _enter,\n activate: _enter,\n remove: function remove$$1(vnode, rm) {\n /* istanbul ignore else */\n if (vnode.data.show !== true) {\n leave(vnode, rm);\n } else {\n rm();\n }\n }\n} : {};\nvar platformModules = [attrs, klass, events, domProps, style, transition];\n/* */\n// the directive module should be applied last, after all\n// built-in modules have been applied.\n\nvar modules = platformModules.concat(baseModules);\nvar patch = createPatchFunction({\n nodeOps: nodeOps,\n modules: modules\n});\n/**\n * Not type checking this file because flow doesn't like attaching\n * properties to Elements.\n */\n\n/* istanbul ignore if */\n\nif (isIE9) {\n // http://www.matts411.com/post/internet-explorer-9-oninput/\n document.addEventListener('selectionchange', function () {\n var el = document.activeElement;\n\n if (el && el.vmodel) {\n trigger(el, 'input');\n }\n });\n}\n\nvar directive = {\n inserted: function inserted(el, binding, vnode, oldVnode) {\n if (vnode.tag === 'select') {\n // #6903\n if (oldVnode.elm && !oldVnode.elm._vOptions) {\n mergeVNodeHook(vnode, 'postpatch', function () {\n directive.componentUpdated(el, binding, vnode);\n });\n } else {\n setSelected(el, binding, vnode.context);\n }\n\n el._vOptions = [].map.call(el.options, getValue);\n } else if (vnode.tag === 'textarea' || isTextInputType(el.type)) {\n el._vModifiers = binding.modifiers;\n\n if (!binding.modifiers.lazy) {\n el.addEventListener('compositionstart', onCompositionStart);\n el.addEventListener('compositionend', onCompositionEnd); // Safari < 10.2 & UIWebView doesn't fire compositionend when\n // switching focus before confirming composition choice\n // this also fixes the issue where some browsers e.g. iOS Chrome\n // fires \"change\" instead of \"input\" on autocomplete.\n\n el.addEventListener('change', onCompositionEnd);\n /* istanbul ignore if */\n\n if (isIE9) {\n el.vmodel = true;\n }\n }\n }\n },\n componentUpdated: function componentUpdated(el, binding, vnode) {\n if (vnode.tag === 'select') {\n setSelected(el, binding, vnode.context); // in case the options rendered by v-for have changed,\n // it's possible that the value is out-of-sync with the rendered options.\n // detect such cases and filter out values that no longer has a matching\n // option in the DOM.\n\n var prevOptions = el._vOptions;\n var curOptions = el._vOptions = [].map.call(el.options, getValue);\n\n if (curOptions.some(function (o, i) {\n return !looseEqual(o, prevOptions[i]);\n })) {\n // trigger change event if\n // no matching option found for at least one value\n var needReset = el.multiple ? binding.value.some(function (v) {\n return hasNoMatchingOption(v, curOptions);\n }) : binding.value !== binding.oldValue && hasNoMatchingOption(binding.value, curOptions);\n\n if (needReset) {\n trigger(el, 'change');\n }\n }\n }\n }\n};\n\nfunction setSelected(el, binding, vm) {\n actuallySetSelected(el, binding, vm);\n /* istanbul ignore if */\n\n if (isIE || isEdge) {\n setTimeout(function () {\n actuallySetSelected(el, binding, vm);\n }, 0);\n }\n}\n\nfunction actuallySetSelected(el, binding, vm) {\n var value = binding.value;\n var isMultiple = el.multiple;\n\n if (isMultiple && !Array.isArray(value)) {\n process.env.NODE_ENV !== 'production' && warn(\"<select multiple v-model=\\\"\" + binding.expression + \"\\\"> \" + \"expects an Array value for its binding, but got \" + Object.prototype.toString.call(value).slice(8, -1), vm);\n return;\n }\n\n var selected, option;\n\n for (var i = 0, l = el.options.length; i < l; i++) {\n option = el.options[i];\n\n if (isMultiple) {\n selected = looseIndexOf(value, getValue(option)) > -1;\n\n if (option.selected !== selected) {\n option.selected = selected;\n }\n } else {\n if (looseEqual(getValue(option), value)) {\n if (el.selectedIndex !== i) {\n el.selectedIndex = i;\n }\n\n return;\n }\n }\n }\n\n if (!isMultiple) {\n el.selectedIndex = -1;\n }\n}\n\nfunction hasNoMatchingOption(value, options) {\n return options.every(function (o) {\n return !looseEqual(o, value);\n });\n}\n\nfunction getValue(option) {\n return '_value' in option ? option._value : option.value;\n}\n\nfunction onCompositionStart(e) {\n e.target.composing = true;\n}\n\nfunction onCompositionEnd(e) {\n // prevent triggering an input event for no reason\n if (!e.target.composing) {\n return;\n }\n\n e.target.composing = false;\n trigger(e.target, 'input');\n}\n\nfunction trigger(el, type) {\n var e = document.createEvent('HTMLEvents');\n e.initEvent(type, true, true);\n el.dispatchEvent(e);\n}\n/* */\n// recursively search for possible transition defined inside the component root\n\n\nfunction locateNode(vnode) {\n return vnode.componentInstance && (!vnode.data || !vnode.data.transition) ? locateNode(vnode.componentInstance._vnode) : vnode;\n}\n\nvar show = {\n bind: function bind(el, ref, vnode) {\n var value = ref.value;\n vnode = locateNode(vnode);\n var transition$$1 = vnode.data && vnode.data.transition;\n var originalDisplay = el.__vOriginalDisplay = el.style.display === 'none' ? '' : el.style.display;\n\n if (value && transition$$1) {\n vnode.data.show = true;\n enter(vnode, function () {\n el.style.display = originalDisplay;\n });\n } else {\n el.style.display = value ? originalDisplay : 'none';\n }\n },\n update: function update(el, ref, vnode) {\n var value = ref.value;\n var oldValue = ref.oldValue;\n /* istanbul ignore if */\n\n if (!value === !oldValue) {\n return;\n }\n\n vnode = locateNode(vnode);\n var transition$$1 = vnode.data && vnode.data.transition;\n\n if (transition$$1) {\n vnode.data.show = true;\n\n if (value) {\n enter(vnode, function () {\n el.style.display = el.__vOriginalDisplay;\n });\n } else {\n leave(vnode, function () {\n el.style.display = 'none';\n });\n }\n } else {\n el.style.display = value ? el.__vOriginalDisplay : 'none';\n }\n },\n unbind: function unbind(el, binding, vnode, oldVnode, isDestroy) {\n if (!isDestroy) {\n el.style.display = el.__vOriginalDisplay;\n }\n }\n};\nvar platformDirectives = {\n model: directive,\n show: show\n};\n/* */\n\nvar transitionProps = {\n name: String,\n appear: Boolean,\n css: Boolean,\n mode: String,\n type: String,\n enterClass: String,\n leaveClass: String,\n enterToClass: String,\n leaveToClass: String,\n enterActiveClass: String,\n leaveActiveClass: String,\n appearClass: String,\n appearActiveClass: String,\n appearToClass: String,\n duration: [Number, String, Object]\n}; // in case the child is also an abstract component, e.g. <keep-alive>\n// we want to recursively retrieve the real component to be rendered\n\nfunction getRealChild(vnode) {\n var compOptions = vnode && vnode.componentOptions;\n\n if (compOptions && compOptions.Ctor.options.abstract) {\n return getRealChild(getFirstComponentChild(compOptions.children));\n } else {\n return vnode;\n }\n}\n\nfunction extractTransitionData(comp) {\n var data = {};\n var options = comp.$options; // props\n\n for (var key in options.propsData) {\n data[key] = comp[key];\n } // events.\n // extract listeners and pass them directly to the transition methods\n\n\n var listeners = options._parentListeners;\n\n for (var key$1 in listeners) {\n data[camelize(key$1)] = listeners[key$1];\n }\n\n return data;\n}\n\nfunction placeholder(h, rawChild) {\n if (/\\d-keep-alive$/.test(rawChild.tag)) {\n return h('keep-alive', {\n props: rawChild.componentOptions.propsData\n });\n }\n}\n\nfunction hasParentTransition(vnode) {\n while (vnode = vnode.parent) {\n if (vnode.data.transition) {\n return true;\n }\n }\n}\n\nfunction isSameChild(child, oldChild) {\n return oldChild.key === child.key && oldChild.tag === child.tag;\n}\n\nvar isNotTextNode = function (c) {\n return c.tag || isAsyncPlaceholder(c);\n};\n\nvar isVShowDirective = function (d) {\n return d.name === 'show';\n};\n\nvar Transition = {\n name: 'transition',\n props: transitionProps,\n abstract: true,\n render: function render(h) {\n var this$1 = this;\n var children = this.$slots.default;\n\n if (!children) {\n return;\n } // filter out text nodes (possible whitespaces)\n\n\n children = children.filter(isNotTextNode);\n /* istanbul ignore if */\n\n if (!children.length) {\n return;\n } // warn multiple elements\n\n\n if (process.env.NODE_ENV !== 'production' && children.length > 1) {\n warn('<transition> can only be used on a single element. Use ' + '<transition-group> for lists.', this.$parent);\n }\n\n var mode = this.mode; // warn invalid mode\n\n if (process.env.NODE_ENV !== 'production' && mode && mode !== 'in-out' && mode !== 'out-in') {\n warn('invalid <transition> mode: ' + mode, this.$parent);\n }\n\n var rawChild = children[0]; // if this is a component root node and the component's\n // parent container node also has transition, skip.\n\n if (hasParentTransition(this.$vnode)) {\n return rawChild;\n } // apply transition data to child\n // use getRealChild() to ignore abstract components e.g. keep-alive\n\n\n var child = getRealChild(rawChild);\n /* istanbul ignore if */\n\n if (!child) {\n return rawChild;\n }\n\n if (this._leaving) {\n return placeholder(h, rawChild);\n } // ensure a key that is unique to the vnode type and to this transition\n // component instance. This key will be used to remove pending leaving nodes\n // during entering.\n\n\n var id = \"__transition-\" + this._uid + \"-\";\n child.key = child.key == null ? child.isComment ? id + 'comment' : id + child.tag : isPrimitive(child.key) ? String(child.key).indexOf(id) === 0 ? child.key : id + child.key : child.key;\n var data = (child.data || (child.data = {})).transition = extractTransitionData(this);\n var oldRawChild = this._vnode;\n var oldChild = getRealChild(oldRawChild); // mark v-show\n // so that the transition module can hand over the control to the directive\n\n if (child.data.directives && child.data.directives.some(isVShowDirective)) {\n child.data.show = true;\n }\n\n if (oldChild && oldChild.data && !isSameChild(child, oldChild) && !isAsyncPlaceholder(oldChild) && // #6687 component root is a comment node\n !(oldChild.componentInstance && oldChild.componentInstance._vnode.isComment)) {\n // replace old child transition data with fresh one\n // important for dynamic transitions!\n var oldData = oldChild.data.transition = extend({}, data); // handle transition mode\n\n if (mode === 'out-in') {\n // return placeholder node and queue update when leave finishes\n this._leaving = true;\n mergeVNodeHook(oldData, 'afterLeave', function () {\n this$1._leaving = false;\n this$1.$forceUpdate();\n });\n return placeholder(h, rawChild);\n } else if (mode === 'in-out') {\n if (isAsyncPlaceholder(child)) {\n return oldRawChild;\n }\n\n var delayedLeave;\n\n var performLeave = function () {\n delayedLeave();\n };\n\n mergeVNodeHook(data, 'afterEnter', performLeave);\n mergeVNodeHook(data, 'enterCancelled', performLeave);\n mergeVNodeHook(oldData, 'delayLeave', function (leave) {\n delayedLeave = leave;\n });\n }\n }\n\n return rawChild;\n }\n};\n/* */\n\nvar props = extend({\n tag: String,\n moveClass: String\n}, transitionProps);\ndelete props.mode;\nvar TransitionGroup = {\n props: props,\n beforeMount: function beforeMount() {\n var this$1 = this;\n var update = this._update;\n\n this._update = function (vnode, hydrating) {\n var restoreActiveInstance = setActiveInstance(this$1); // force removing pass\n\n this$1.__patch__(this$1._vnode, this$1.kept, false, // hydrating\n true // removeOnly (!important, avoids unnecessary moves)\n );\n\n this$1._vnode = this$1.kept;\n restoreActiveInstance();\n update.call(this$1, vnode, hydrating);\n };\n },\n render: function render(h) {\n var tag = this.tag || this.$vnode.data.tag || 'span';\n var map = Object.create(null);\n var prevChildren = this.prevChildren = this.children;\n var rawChildren = this.$slots.default || [];\n var children = this.children = [];\n var transitionData = extractTransitionData(this);\n\n for (var i = 0; i < rawChildren.length; i++) {\n var c = rawChildren[i];\n\n if (c.tag) {\n if (c.key != null && String(c.key).indexOf('__vlist') !== 0) {\n children.push(c);\n map[c.key] = c;\n (c.data || (c.data = {})).transition = transitionData;\n } else if (process.env.NODE_ENV !== 'production') {\n var opts = c.componentOptions;\n var name = opts ? opts.Ctor.options.name || opts.tag || '' : c.tag;\n warn(\"<transition-group> children must be keyed: <\" + name + \">\");\n }\n }\n }\n\n if (prevChildren) {\n var kept = [];\n var removed = [];\n\n for (var i$1 = 0; i$1 < prevChildren.length; i$1++) {\n var c$1 = prevChildren[i$1];\n c$1.data.transition = transitionData;\n c$1.data.pos = c$1.elm.getBoundingClientRect();\n\n if (map[c$1.key]) {\n kept.push(c$1);\n } else {\n removed.push(c$1);\n }\n }\n\n this.kept = h(tag, null, kept);\n this.removed = removed;\n }\n\n return h(tag, null, children);\n },\n updated: function updated() {\n var children = this.prevChildren;\n var moveClass = this.moveClass || (this.name || 'v') + '-move';\n\n if (!children.length || !this.hasMove(children[0].elm, moveClass)) {\n return;\n } // we divide the work into three loops to avoid mixing DOM reads and writes\n // in each iteration - which helps prevent layout thrashing.\n\n\n children.forEach(callPendingCbs);\n children.forEach(recordPosition);\n children.forEach(applyTranslation); // force reflow to put everything in position\n // assign to this to avoid being removed in tree-shaking\n // $flow-disable-line\n\n this._reflow = document.body.offsetHeight;\n children.forEach(function (c) {\n if (c.data.moved) {\n var el = c.elm;\n var s = el.style;\n addTransitionClass(el, moveClass);\n s.transform = s.WebkitTransform = s.transitionDuration = '';\n el.addEventListener(transitionEndEvent, el._moveCb = function cb(e) {\n if (e && e.target !== el) {\n return;\n }\n\n if (!e || /transform$/.test(e.propertyName)) {\n el.removeEventListener(transitionEndEvent, cb);\n el._moveCb = null;\n removeTransitionClass(el, moveClass);\n }\n });\n }\n });\n },\n methods: {\n hasMove: function hasMove(el, moveClass) {\n /* istanbul ignore if */\n if (!hasTransition) {\n return false;\n }\n /* istanbul ignore if */\n\n\n if (this._hasMove) {\n return this._hasMove;\n } // Detect whether an element with the move class applied has\n // CSS transitions. Since the element may be inside an entering\n // transition at this very moment, we make a clone of it and remove\n // all other transition classes applied to ensure only the move class\n // is applied.\n\n\n var clone = el.cloneNode();\n\n if (el._transitionClasses) {\n el._transitionClasses.forEach(function (cls) {\n removeClass(clone, cls);\n });\n }\n\n addClass(clone, moveClass);\n clone.style.display = 'none';\n this.$el.appendChild(clone);\n var info = getTransitionInfo(clone);\n this.$el.removeChild(clone);\n return this._hasMove = info.hasTransform;\n }\n }\n};\n\nfunction callPendingCbs(c) {\n /* istanbul ignore if */\n if (c.elm._moveCb) {\n c.elm._moveCb();\n }\n /* istanbul ignore if */\n\n\n if (c.elm._enterCb) {\n c.elm._enterCb();\n }\n}\n\nfunction recordPosition(c) {\n c.data.newPos = c.elm.getBoundingClientRect();\n}\n\nfunction applyTranslation(c) {\n var oldPos = c.data.pos;\n var newPos = c.data.newPos;\n var dx = oldPos.left - newPos.left;\n var dy = oldPos.top - newPos.top;\n\n if (dx || dy) {\n c.data.moved = true;\n var s = c.elm.style;\n s.transform = s.WebkitTransform = \"translate(\" + dx + \"px,\" + dy + \"px)\";\n s.transitionDuration = '0s';\n }\n}\n\nvar platformComponents = {\n Transition: Transition,\n TransitionGroup: TransitionGroup\n};\n/* */\n// install platform specific utils\n\nVue.config.mustUseProp = mustUseProp;\nVue.config.isReservedTag = isReservedTag;\nVue.config.isReservedAttr = isReservedAttr;\nVue.config.getTagNamespace = getTagNamespace;\nVue.config.isUnknownElement = isUnknownElement; // install platform runtime directives & components\n\nextend(Vue.options.directives, platformDirectives);\nextend(Vue.options.components, platformComponents); // install platform patch function\n\nVue.prototype.__patch__ = inBrowser ? patch : noop; // public mount method\n\nVue.prototype.$mount = function (el, hydrating) {\n el = el && inBrowser ? query(el) : undefined;\n return mountComponent(this, el, hydrating);\n}; // devtools global hook\n\n/* istanbul ignore next */\n\n\nif (inBrowser) {\n setTimeout(function () {\n if (config.devtools) {\n if (devtools) {\n devtools.emit('init', Vue);\n } else if (process.env.NODE_ENV !== 'production' && process.env.NODE_ENV !== 'test') {\n console[console.info ? 'info' : 'log']('Download the Vue Devtools extension for a better development experience:\\n' + 'https://github.com/vuejs/vue-devtools');\n }\n }\n\n if (process.env.NODE_ENV !== 'production' && process.env.NODE_ENV !== 'test' && config.productionTip !== false && typeof console !== 'undefined') {\n console[console.info ? 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Only returns true\n * for plain JavaScript objects.\n */\nfunction isPlainObject (obj) {\n return _toString.call(obj) === '[object Object]'\n}\n\nfunction isRegExp (v) {\n return _toString.call(v) === '[object RegExp]'\n}\n\n/**\n * Check if val is a valid array index.\n */\nfunction isValidArrayIndex (val) {\n var n = parseFloat(String(val));\n return n >= 0 && Math.floor(n) === n && isFinite(val)\n}\n\nfunction isPromise (val) {\n return (\n isDef(val) &&\n typeof val.then === 'function' &&\n typeof val.catch === 'function'\n )\n}\n\n/**\n * Convert a value to a string that is actually rendered.\n */\nfunction toString (val) {\n return val == null\n ? ''\n : Array.isArray(val) || (isPlainObject(val) && val.toString === _toString)\n ? JSON.stringify(val, null, 2)\n : String(val)\n}\n\n/**\n * Convert an input value to a number for persistence.\n * If the conversion fails, return original string.\n */\nfunction toNumber (val) {\n var n = parseFloat(val);\n return isNaN(n) ? val : n\n}\n\n/**\n * Make a map and return a function for checking if a key\n * is in that map.\n */\nfunction makeMap (\n str,\n expectsLowerCase\n) {\n var map = Object.create(null);\n var list = str.split(',');\n for (var i = 0; i < list.length; i++) {\n map[list[i]] = true;\n }\n return expectsLowerCase\n ? function (val) { return map[val.toLowerCase()]; }\n : function (val) { return map[val]; }\n}\n\n/**\n * Check if a tag is a built-in tag.\n */\nvar isBuiltInTag = makeMap('slot,component', true);\n\n/**\n * Check if an attribute is a reserved attribute.\n */\nvar isReservedAttribute = makeMap('key,ref,slot,slot-scope,is');\n\n/**\n * Remove an item from an array.\n */\nfunction remove (arr, item) {\n if (arr.length) {\n var index = arr.indexOf(item);\n if (index > -1) {\n return arr.splice(index, 1)\n }\n }\n}\n\n/**\n * Check whether an object has the property.\n */\nvar hasOwnProperty = Object.prototype.hasOwnProperty;\nfunction hasOwn (obj, key) {\n return hasOwnProperty.call(obj, key)\n}\n\n/**\n * Create a cached version of a pure function.\n */\nfunction cached (fn) {\n var cache = Object.create(null);\n return (function cachedFn (str) {\n var hit = cache[str];\n return hit || (cache[str] = fn(str))\n })\n}\n\n/**\n * Camelize a hyphen-delimited string.\n */\nvar camelizeRE = /-(\\w)/g;\nvar camelize = cached(function (str) {\n return str.replace(camelizeRE, function (_, c) { return c ? c.toUpperCase() : ''; })\n});\n\n/**\n * Capitalize a string.\n */\nvar capitalize = cached(function (str) {\n return str.charAt(0).toUpperCase() + str.slice(1)\n});\n\n/**\n * Hyphenate a camelCase string.\n */\nvar hyphenateRE = /\\B([A-Z])/g;\nvar hyphenate = cached(function (str) {\n return str.replace(hyphenateRE, '-$1').toLowerCase()\n});\n\n/**\n * Simple bind polyfill for environments that do not support it,\n * e.g., PhantomJS 1.x. Technically, we don't need this anymore\n * since native bind is now performant enough in most browsers.\n * But removing it would mean breaking code that was able to run in\n * PhantomJS 1.x, so this must be kept for backward compatibility.\n */\n\n/* istanbul ignore next */\nfunction polyfillBind (fn, ctx) {\n function boundFn (a) {\n var l = arguments.length;\n return l\n ? l > 1\n ? fn.apply(ctx, arguments)\n : fn.call(ctx, a)\n : fn.call(ctx)\n }\n\n boundFn._length = fn.length;\n return boundFn\n}\n\nfunction nativeBind (fn, ctx) {\n return fn.bind(ctx)\n}\n\nvar bind = Function.prototype.bind\n ? nativeBind\n : polyfillBind;\n\n/**\n * Convert an Array-like object to a real Array.\n */\nfunction toArray (list, start) {\n start = start || 0;\n var i = list.length - start;\n var ret = new Array(i);\n while (i--) {\n ret[i] = list[i + start];\n }\n return ret\n}\n\n/**\n * Mix properties into target object.\n */\nfunction extend (to, _from) {\n for (var key in _from) {\n to[key] = _from[key];\n }\n return to\n}\n\n/**\n * Merge an Array of Objects into a single Object.\n */\nfunction toObject (arr) {\n var res = {};\n for (var i = 0; i < arr.length; i++) {\n if (arr[i]) {\n extend(res, arr[i]);\n }\n }\n return res\n}\n\n/* eslint-disable no-unused-vars */\n\n/**\n * Perform no operation.\n * Stubbing args to make Flow happy without leaving useless transpiled code\n * with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/).\n */\nfunction noop (a, b, c) {}\n\n/**\n * Always return false.\n */\nvar no = function (a, b, c) { return false; };\n\n/* eslint-enable no-unused-vars */\n\n/**\n * Return the same value.\n */\nvar identity = function (_) { return _; };\n\n/**\n * Check if two values are loosely equal - that is,\n * if they are plain objects, do they have the same shape?\n */\nfunction looseEqual (a, b) {\n if (a === b) { return true }\n var isObjectA = isObject(a);\n var isObjectB = isObject(b);\n if (isObjectA && isObjectB) {\n try {\n var isArrayA = Array.isArray(a);\n var isArrayB = Array.isArray(b);\n if (isArrayA && isArrayB) {\n return a.length === b.length && a.every(function (e, i) {\n return looseEqual(e, b[i])\n })\n } else if (a instanceof Date && b instanceof Date) {\n return a.getTime() === b.getTime()\n } else if (!isArrayA && !isArrayB) {\n var keysA = Object.keys(a);\n var keysB = Object.keys(b);\n return keysA.length === keysB.length && keysA.every(function (key) {\n return looseEqual(a[key], b[key])\n })\n } else {\n /* istanbul ignore next */\n return false\n }\n } catch (e) {\n /* istanbul ignore next */\n return false\n }\n } else if (!isObjectA && !isObjectB) {\n return String(a) === String(b)\n } else {\n return false\n }\n}\n\n/**\n * Return the first index at which a loosely equal value can be\n * found in the array (if value is a plain object, the array must\n * contain an object of the same shape), or -1 if it is not present.\n */\nfunction looseIndexOf (arr, val) {\n for (var i = 0; i < arr.length; i++) {\n if (looseEqual(arr[i], val)) { return i }\n }\n return -1\n}\n\n/**\n * Ensure a function is called only once.\n */\nfunction once (fn) {\n var called = false;\n return function () {\n if (!called) {\n called = true;\n fn.apply(this, arguments);\n }\n }\n}\n\nvar SSR_ATTR = 'data-server-rendered';\n\nvar ASSET_TYPES = [\n 'component',\n 'directive',\n 'filter'\n];\n\nvar LIFECYCLE_HOOKS = [\n 'beforeCreate',\n 'created',\n 'beforeMount',\n 'mounted',\n 'beforeUpdate',\n 'updated',\n 'beforeDestroy',\n 'destroyed',\n 'activated',\n 'deactivated',\n 'errorCaptured',\n 'serverPrefetch'\n];\n\n/* */\n\n\n\nvar config = ({\n /**\n * Option merge strategies (used in core/util/options)\n */\n // $flow-disable-line\n optionMergeStrategies: Object.create(null),\n\n /**\n * Whether to suppress warnings.\n */\n silent: false,\n\n /**\n * Show production mode tip message on boot?\n */\n productionTip: process.env.NODE_ENV !== 'production',\n\n /**\n * Whether to enable devtools\n */\n devtools: process.env.NODE_ENV !== 'production',\n\n /**\n * Whether to record perf\n */\n performance: false,\n\n /**\n * Error handler for watcher errors\n */\n errorHandler: null,\n\n /**\n * Warn handler for watcher warns\n */\n warnHandler: null,\n\n /**\n * Ignore certain custom elements\n */\n ignoredElements: [],\n\n /**\n * Custom user key aliases for v-on\n */\n // $flow-disable-line\n keyCodes: Object.create(null),\n\n /**\n * Check if a tag is reserved so that it cannot be registered as a\n * component. This is platform-dependent and may be overwritten.\n */\n isReservedTag: no,\n\n /**\n * Check if an attribute is reserved so that it cannot be used as a component\n * prop. This is platform-dependent and may be overwritten.\n */\n isReservedAttr: no,\n\n /**\n * Check if a tag is an unknown element.\n * Platform-dependent.\n */\n isUnknownElement: no,\n\n /**\n * Get the namespace of an element\n */\n getTagNamespace: noop,\n\n /**\n * Parse the real tag name for the specific platform.\n */\n parsePlatformTagName: identity,\n\n /**\n * Check if an attribute must be bound using property, e.g. value\n * Platform-dependent.\n */\n mustUseProp: no,\n\n /**\n * Perform updates asynchronously. Intended to be used by Vue Test Utils\n * This will significantly reduce performance if set to false.\n */\n async: true,\n\n /**\n * Exposed for legacy reasons\n */\n _lifecycleHooks: LIFECYCLE_HOOKS\n});\n\n/* */\n\n/**\n * unicode letters used for parsing html tags, component names and property paths.\n * using https://www.w3.org/TR/html53/semantics-scripting.html#potentialcustomelementname\n * skipping \\u10000-\\uEFFFF due to it freezing up PhantomJS\n */\nvar unicodeRegExp = /a-zA-Z\\u00B7\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u037D\\u037F-\\u1FFF\\u200C-\\u200D\\u203F-\\u2040\\u2070-\\u218F\\u2C00-\\u2FEF\\u3001-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFFD/;\n\n/**\n * Check if a string starts with $ or _\n */\nfunction isReserved (str) {\n var c = (str + '').charCodeAt(0);\n return c === 0x24 || c === 0x5F\n}\n\n/**\n * Define a property.\n */\nfunction def (obj, key, val, enumerable) {\n Object.defineProperty(obj, key, {\n value: val,\n enumerable: !!enumerable,\n writable: true,\n configurable: true\n });\n}\n\n/**\n * Parse simple path.\n */\nvar bailRE = new RegExp((\"[^\" + (unicodeRegExp.source) + \".$_\\\\d]\"));\nfunction parsePath (path) {\n if (bailRE.test(path)) {\n return\n }\n var segments = path.split('.');\n return function (obj) {\n for (var i = 0; i < segments.length; i++) {\n if (!obj) { return }\n obj = obj[segments[i]];\n }\n return obj\n }\n}\n\n/* */\n\n// can we use __proto__?\nvar hasProto = '__proto__' in {};\n\n// Browser environment sniffing\nvar inBrowser = typeof window !== 'undefined';\nvar inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform;\nvar weexPlatform = inWeex && WXEnvironment.platform.toLowerCase();\nvar UA = inBrowser && window.navigator.userAgent.toLowerCase();\nvar isIE = UA && /msie|trident/.test(UA);\nvar isIE9 = UA && UA.indexOf('msie 9.0') > 0;\nvar isEdge = UA && UA.indexOf('edge/') > 0;\nvar isAndroid = (UA && UA.indexOf('android') > 0) || (weexPlatform === 'android');\nvar isIOS = (UA && /iphone|ipad|ipod|ios/.test(UA)) || (weexPlatform === 'ios');\nvar isChrome = UA && /chrome\\/\\d+/.test(UA) && !isEdge;\nvar isPhantomJS = UA && /phantomjs/.test(UA);\nvar isFF = UA && UA.match(/firefox\\/(\\d+)/);\n\n// Firefox has a \"watch\" function on Object.prototype...\nvar nativeWatch = ({}).watch;\n\nvar supportsPassive = false;\nif (inBrowser) {\n try {\n var opts = {};\n Object.defineProperty(opts, 'passive', ({\n get: function get () {\n /* istanbul ignore next */\n supportsPassive = true;\n }\n })); // https://github.com/facebook/flow/issues/285\n window.addEventListener('test-passive', null, opts);\n } catch (e) {}\n}\n\n// this needs to be lazy-evaled because vue may be required before\n// vue-server-renderer can set VUE_ENV\nvar _isServer;\nvar isServerRendering = function () {\n if (_isServer === undefined) {\n /* istanbul ignore if */\n if (!inBrowser && !inWeex && typeof global !== 'undefined') {\n // detect presence of vue-server-renderer and avoid\n // Webpack shimming the process\n _isServer = global['process'] && global['process'].env.VUE_ENV === 'server';\n } else {\n _isServer = false;\n }\n }\n return _isServer\n};\n\n// detect devtools\nvar devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__;\n\n/* istanbul ignore next */\nfunction isNative (Ctor) {\n return typeof Ctor === 'function' && /native code/.test(Ctor.toString())\n}\n\nvar hasSymbol =\n typeof Symbol !== 'undefined' && isNative(Symbol) &&\n typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys);\n\nvar _Set;\n/* istanbul ignore if */ // $flow-disable-line\nif (typeof Set !== 'undefined' && isNative(Set)) {\n // use native Set when available.\n _Set = Set;\n} else {\n // a non-standard Set polyfill that only works with primitive keys.\n _Set = /*@__PURE__*/(function () {\n function Set () {\n this.set = Object.create(null);\n }\n Set.prototype.has = function has (key) {\n return this.set[key] === true\n };\n Set.prototype.add = function add (key) {\n this.set[key] = true;\n };\n Set.prototype.clear = function clear () {\n this.set = Object.create(null);\n };\n\n return Set;\n }());\n}\n\n/* */\n\nvar warn = noop;\nvar tip = noop;\nvar generateComponentTrace = (noop); // work around flow check\nvar formatComponentName = (noop);\n\nif (process.env.NODE_ENV !== 'production') {\n var hasConsole = typeof console !== 'undefined';\n var classifyRE = /(?:^|[-_])(\\w)/g;\n var classify = function (str) { return str\n .replace(classifyRE, function (c) { return c.toUpperCase(); })\n .replace(/[-_]/g, ''); };\n\n warn = function (msg, vm) {\n var trace = vm ? generateComponentTrace(vm) : '';\n\n if (config.warnHandler) {\n config.warnHandler.call(null, msg, vm, trace);\n } else if (hasConsole && (!config.silent)) {\n console.error((\"[Vue warn]: \" + msg + trace));\n }\n };\n\n tip = function (msg, vm) {\n if (hasConsole && (!config.silent)) {\n console.warn(\"[Vue tip]: \" + msg + (\n vm ? generateComponentTrace(vm) : ''\n ));\n }\n };\n\n formatComponentName = function (vm, includeFile) {\n if (vm.$root === vm) {\n return '<Root>'\n }\n var options = typeof vm === 'function' && vm.cid != null\n ? vm.options\n : vm._isVue\n ? vm.$options || vm.constructor.options\n : vm;\n var name = options.name || options._componentTag;\n var file = options.__file;\n if (!name && file) {\n var match = file.match(/([^/\\\\]+)\\.vue$/);\n name = match && match[1];\n }\n\n return (\n (name ? (\"<\" + (classify(name)) + \">\") : \"<Anonymous>\") +\n (file && includeFile !== false ? (\" at \" + file) : '')\n )\n };\n\n var repeat = function (str, n) {\n var res = '';\n while (n) {\n if (n % 2 === 1) { res += str; }\n if (n > 1) { str += str; }\n n >>= 1;\n }\n return res\n };\n\n generateComponentTrace = function (vm) {\n if (vm._isVue && vm.$parent) {\n var tree = [];\n var currentRecursiveSequence = 0;\n while (vm) {\n if (tree.length > 0) {\n var last = tree[tree.length - 1];\n if (last.constructor === vm.constructor) {\n currentRecursiveSequence++;\n vm = vm.$parent;\n continue\n } else if (currentRecursiveSequence > 0) {\n tree[tree.length - 1] = [last, currentRecursiveSequence];\n currentRecursiveSequence = 0;\n }\n }\n tree.push(vm);\n vm = vm.$parent;\n }\n return '\\n\\nfound in\\n\\n' + tree\n .map(function (vm, i) { return (\"\" + (i === 0 ? '---> ' : repeat(' ', 5 + i * 2)) + (Array.isArray(vm)\n ? ((formatComponentName(vm[0])) + \"... (\" + (vm[1]) + \" recursive calls)\")\n : formatComponentName(vm))); })\n .join('\\n')\n } else {\n return (\"\\n\\n(found in \" + (formatComponentName(vm)) + \")\")\n }\n };\n}\n\n/* */\n\nvar uid = 0;\n\n/**\n * A dep is an observable that can have multiple\n * directives subscribing to it.\n */\nvar Dep = function Dep () {\n this.id = uid++;\n this.subs = [];\n};\n\nDep.prototype.addSub = function addSub (sub) {\n this.subs.push(sub);\n};\n\nDep.prototype.removeSub = function removeSub (sub) {\n remove(this.subs, sub);\n};\n\nDep.prototype.depend = function depend () {\n if (Dep.target) {\n Dep.target.addDep(this);\n }\n};\n\nDep.prototype.notify = function notify () {\n // stabilize the subscriber list first\n var subs = this.subs.slice();\n if (process.env.NODE_ENV !== 'production' && !config.async) {\n // subs aren't sorted in scheduler if not running async\n // we need to sort them now to make sure they fire in correct\n // order\n subs.sort(function (a, b) { return a.id - b.id; });\n }\n for (var i = 0, l = subs.length; i < l; i++) {\n subs[i].update();\n }\n};\n\n// The current target watcher being evaluated.\n// This is globally unique because only one watcher\n// can be evaluated at a time.\nDep.target = null;\nvar targetStack = [];\n\nfunction pushTarget (target) {\n targetStack.push(target);\n Dep.target = target;\n}\n\nfunction popTarget () {\n targetStack.pop();\n Dep.target = targetStack[targetStack.length - 1];\n}\n\n/* */\n\nvar VNode = function VNode (\n tag,\n data,\n children,\n text,\n elm,\n context,\n componentOptions,\n asyncFactory\n) {\n this.tag = tag;\n this.data = data;\n this.children = children;\n this.text = text;\n this.elm = elm;\n this.ns = undefined;\n this.context = context;\n this.fnContext = undefined;\n this.fnOptions = undefined;\n this.fnScopeId = undefined;\n this.key = data && data.key;\n this.componentOptions = componentOptions;\n this.componentInstance = undefined;\n this.parent = undefined;\n this.raw = false;\n this.isStatic = false;\n this.isRootInsert = true;\n this.isComment = false;\n this.isCloned = false;\n this.isOnce = false;\n this.asyncFactory = asyncFactory;\n this.asyncMeta = undefined;\n this.isAsyncPlaceholder = false;\n};\n\nvar prototypeAccessors = { child: { configurable: true } };\n\n// DEPRECATED: alias for componentInstance for backwards compat.\n/* istanbul ignore next */\nprototypeAccessors.child.get = function () {\n return this.componentInstance\n};\n\nObject.defineProperties( VNode.prototype, prototypeAccessors );\n\nvar createEmptyVNode = function (text) {\n if ( text === void 0 ) text = '';\n\n var node = new VNode();\n node.text = text;\n node.isComment = true;\n return node\n};\n\nfunction createTextVNode (val) {\n return new VNode(undefined, undefined, undefined, String(val))\n}\n\n// optimized shallow clone\n// used for static nodes and slot nodes because they may be reused across\n// multiple renders, cloning them avoids errors when DOM manipulations rely\n// on their elm reference.\nfunction cloneVNode (vnode) {\n var cloned = new VNode(\n vnode.tag,\n vnode.data,\n // #7975\n // clone children array to avoid mutating original in case of cloning\n // a child.\n vnode.children && vnode.children.slice(),\n vnode.text,\n vnode.elm,\n vnode.context,\n vnode.componentOptions,\n vnode.asyncFactory\n );\n cloned.ns = vnode.ns;\n cloned.isStatic = vnode.isStatic;\n cloned.key = vnode.key;\n cloned.isComment = vnode.isComment;\n cloned.fnContext = vnode.fnContext;\n cloned.fnOptions = vnode.fnOptions;\n cloned.fnScopeId = vnode.fnScopeId;\n cloned.asyncMeta = vnode.asyncMeta;\n cloned.isCloned = true;\n return cloned\n}\n\n/*\n * not type checking this file because flow doesn't play well with\n * dynamically accessing methods on Array prototype\n */\n\nvar arrayProto = Array.prototype;\nvar arrayMethods = Object.create(arrayProto);\n\nvar methodsToPatch = [\n 'push',\n 'pop',\n 'shift',\n 'unshift',\n 'splice',\n 'sort',\n 'reverse'\n];\n\n/**\n * Intercept mutating methods and emit events\n */\nmethodsToPatch.forEach(function (method) {\n // cache original method\n var original = arrayProto[method];\n def(arrayMethods, method, function mutator () {\n var args = [], len = arguments.length;\n while ( len-- ) args[ len ] = arguments[ len ];\n\n var result = original.apply(this, args);\n var ob = this.__ob__;\n var inserted;\n switch (method) {\n case 'push':\n case 'unshift':\n inserted = args;\n break\n case 'splice':\n inserted = args.slice(2);\n break\n }\n if (inserted) { ob.observeArray(inserted); }\n // notify change\n ob.dep.notify();\n return result\n });\n});\n\n/* */\n\nvar arrayKeys = Object.getOwnPropertyNames(arrayMethods);\n\n/**\n * In some cases we may want to disable observation inside a component's\n * update computation.\n */\nvar shouldObserve = true;\n\nfunction toggleObserving (value) {\n shouldObserve = value;\n}\n\n/**\n * Observer class that is attached to each observed\n * object. Once attached, the observer converts the target\n * object's property keys into getter/setters that\n * collect dependencies and dispatch updates.\n */\nvar Observer = function Observer (value) {\n this.value = value;\n this.dep = new Dep();\n this.vmCount = 0;\n def(value, '__ob__', this);\n if (Array.isArray(value)) {\n if (hasProto) {\n protoAugment(value, arrayMethods);\n } else {\n copyAugment(value, arrayMethods, arrayKeys);\n }\n this.observeArray(value);\n } else {\n this.walk(value);\n }\n};\n\n/**\n * Walk through all properties and convert them into\n * getter/setters. This method should only be called when\n * value type is Object.\n */\nObserver.prototype.walk = function walk (obj) {\n var keys = Object.keys(obj);\n for (var i = 0; i < keys.length; i++) {\n defineReactive$$1(obj, keys[i]);\n }\n};\n\n/**\n * Observe a list of Array items.\n */\nObserver.prototype.observeArray = function observeArray (items) {\n for (var i = 0, l = items.length; i < l; i++) {\n observe(items[i]);\n }\n};\n\n// helpers\n\n/**\n * Augment a target Object or Array by intercepting\n * the prototype chain using __proto__\n */\nfunction protoAugment (target, src) {\n /* eslint-disable no-proto */\n target.__proto__ = src;\n /* eslint-enable no-proto */\n}\n\n/**\n * Augment a target Object or Array by defining\n * hidden properties.\n */\n/* istanbul ignore next */\nfunction copyAugment (target, src, keys) {\n for (var i = 0, l = keys.length; i < l; i++) {\n var key = keys[i];\n def(target, key, src[key]);\n }\n}\n\n/**\n * Attempt to create an observer instance for a value,\n * returns the new observer if successfully observed,\n * or the existing observer if the value already has one.\n */\nfunction observe (value, asRootData) {\n if (!isObject(value) || value instanceof VNode) {\n return\n }\n var ob;\n if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {\n ob = value.__ob__;\n } else if (\n shouldObserve &&\n !isServerRendering() &&\n (Array.isArray(value) || isPlainObject(value)) &&\n Object.isExtensible(value) &&\n !value._isVue\n ) {\n ob = new Observer(value);\n }\n if (asRootData && ob) {\n ob.vmCount++;\n }\n return ob\n}\n\n/**\n * Define a reactive property on an Object.\n */\nfunction defineReactive$$1 (\n obj,\n key,\n val,\n customSetter,\n shallow\n) {\n var dep = new Dep();\n\n var property = Object.getOwnPropertyDescriptor(obj, key);\n if (property && property.configurable === false) {\n return\n }\n\n // cater for pre-defined getter/setters\n var getter = property && property.get;\n var setter = property && property.set;\n if ((!getter || setter) && arguments.length === 2) {\n val = obj[key];\n }\n\n var childOb = !shallow && observe(val);\n Object.defineProperty(obj, key, {\n enumerable: true,\n configurable: true,\n get: function reactiveGetter () {\n var value = getter ? getter.call(obj) : val;\n if (Dep.target) {\n dep.depend();\n if (childOb) {\n childOb.dep.depend();\n if (Array.isArray(value)) {\n dependArray(value);\n }\n }\n }\n return value\n },\n set: function reactiveSetter (newVal) {\n var value = getter ? getter.call(obj) : val;\n /* eslint-disable no-self-compare */\n if (newVal === value || (newVal !== newVal && value !== value)) {\n return\n }\n /* eslint-enable no-self-compare */\n if (process.env.NODE_ENV !== 'production' && customSetter) {\n customSetter();\n }\n // #7981: for accessor properties without setter\n if (getter && !setter) { return }\n if (setter) {\n setter.call(obj, newVal);\n } else {\n val = newVal;\n }\n childOb = !shallow && observe(newVal);\n dep.notify();\n }\n });\n}\n\n/**\n * Set a property on an object. Adds the new property and\n * triggers change notification if the property doesn't\n * already exist.\n */\nfunction set (target, key, val) {\n if (process.env.NODE_ENV !== 'production' &&\n (isUndef(target) || isPrimitive(target))\n ) {\n warn((\"Cannot set reactive property on undefined, null, or primitive value: \" + ((target))));\n }\n if (Array.isArray(target) && isValidArrayIndex(key)) {\n target.length = Math.max(target.length, key);\n target.splice(key, 1, val);\n return val\n }\n if (key in target && !(key in Object.prototype)) {\n target[key] = val;\n return val\n }\n var ob = (target).__ob__;\n if (target._isVue || (ob && ob.vmCount)) {\n process.env.NODE_ENV !== 'production' && warn(\n 'Avoid adding reactive properties to a Vue instance or its root $data ' +\n 'at runtime - declare it upfront in the data option.'\n );\n return val\n }\n if (!ob) {\n target[key] = val;\n return val\n }\n defineReactive$$1(ob.value, key, val);\n ob.dep.notify();\n return val\n}\n\n/**\n * Delete a property and trigger change if necessary.\n */\nfunction del (target, key) {\n if (process.env.NODE_ENV !== 'production' &&\n (isUndef(target) || isPrimitive(target))\n ) {\n warn((\"Cannot delete reactive property on undefined, null, or primitive value: \" + ((target))));\n }\n if (Array.isArray(target) && isValidArrayIndex(key)) {\n target.splice(key, 1);\n return\n }\n var ob = (target).__ob__;\n if (target._isVue || (ob && ob.vmCount)) {\n process.env.NODE_ENV !== 'production' && warn(\n 'Avoid deleting properties on a Vue instance or its root $data ' +\n '- just set it to null.'\n );\n return\n }\n if (!hasOwn(target, key)) {\n return\n }\n delete target[key];\n if (!ob) {\n return\n }\n ob.dep.notify();\n}\n\n/**\n * Collect dependencies on array elements when the array is touched, since\n * we cannot intercept array element access like property getters.\n */\nfunction dependArray (value) {\n for (var e = (void 0), i = 0, l = value.length; i < l; i++) {\n e = value[i];\n e && e.__ob__ && e.__ob__.dep.depend();\n if (Array.isArray(e)) {\n dependArray(e);\n }\n }\n}\n\n/* */\n\n/**\n * Option overwriting strategies are functions that handle\n * how to merge a parent option value and a child option\n * value into the final value.\n */\nvar strats = config.optionMergeStrategies;\n\n/**\n * Options with restrictions\n */\nif (process.env.NODE_ENV !== 'production') {\n strats.el = strats.propsData = function (parent, child, vm, key) {\n if (!vm) {\n warn(\n \"option \\\"\" + key + \"\\\" can only be used during instance \" +\n 'creation with the `new` keyword.'\n );\n }\n return defaultStrat(parent, child)\n };\n}\n\n/**\n * Helper that recursively merges two data objects together.\n */\nfunction mergeData (to, from) {\n if (!from) { return to }\n var key, toVal, fromVal;\n\n var keys = hasSymbol\n ? Reflect.ownKeys(from)\n : Object.keys(from);\n\n for (var i = 0; i < keys.length; i++) {\n key = keys[i];\n // in case the object is already observed...\n if (key === '__ob__') { continue }\n toVal = to[key];\n fromVal = from[key];\n if (!hasOwn(to, key)) {\n set(to, key, fromVal);\n } else if (\n toVal !== fromVal &&\n isPlainObject(toVal) &&\n isPlainObject(fromVal)\n ) {\n mergeData(toVal, fromVal);\n }\n }\n return to\n}\n\n/**\n * Data\n */\nfunction mergeDataOrFn (\n parentVal,\n childVal,\n vm\n) {\n if (!vm) {\n // in a Vue.extend merge, both should be functions\n if (!childVal) {\n return parentVal\n }\n if (!parentVal) {\n return childVal\n }\n // when parentVal & childVal are both present,\n // we need to return a function that returns the\n // merged result of both functions... no need to\n // check if parentVal is a function here because\n // it has to be a function to pass previous merges.\n return function mergedDataFn () {\n return mergeData(\n typeof childVal === 'function' ? childVal.call(this, this) : childVal,\n typeof parentVal === 'function' ? parentVal.call(this, this) : parentVal\n )\n }\n } else {\n return function mergedInstanceDataFn () {\n // instance merge\n var instanceData = typeof childVal === 'function'\n ? childVal.call(vm, vm)\n : childVal;\n var defaultData = typeof parentVal === 'function'\n ? parentVal.call(vm, vm)\n : parentVal;\n if (instanceData) {\n return mergeData(instanceData, defaultData)\n } else {\n return defaultData\n }\n }\n }\n}\n\nstrats.data = function (\n parentVal,\n childVal,\n vm\n) {\n if (!vm) {\n if (childVal && typeof childVal !== 'function') {\n process.env.NODE_ENV !== 'production' && warn(\n 'The \"data\" option should be a function ' +\n 'that returns a per-instance value in component ' +\n 'definitions.',\n vm\n );\n\n return parentVal\n }\n return mergeDataOrFn(parentVal, childVal)\n }\n\n return mergeDataOrFn(parentVal, childVal, vm)\n};\n\n/**\n * Hooks and props are merged as arrays.\n */\nfunction mergeHook (\n parentVal,\n childVal\n) {\n var res = childVal\n ? parentVal\n ? parentVal.concat(childVal)\n : Array.isArray(childVal)\n ? childVal\n : [childVal]\n : parentVal;\n return res\n ? dedupeHooks(res)\n : res\n}\n\nfunction dedupeHooks (hooks) {\n var res = [];\n for (var i = 0; i < hooks.length; i++) {\n if (res.indexOf(hooks[i]) === -1) {\n res.push(hooks[i]);\n }\n }\n return res\n}\n\nLIFECYCLE_HOOKS.forEach(function (hook) {\n strats[hook] = mergeHook;\n});\n\n/**\n * Assets\n *\n * When a vm is present (instance creation), we need to do\n * a three-way merge between constructor options, instance\n * options and parent options.\n */\nfunction mergeAssets (\n parentVal,\n childVal,\n vm,\n key\n) {\n var res = Object.create(parentVal || null);\n if (childVal) {\n process.env.NODE_ENV !== 'production' && assertObjectType(key, childVal, vm);\n return extend(res, childVal)\n } else {\n return res\n }\n}\n\nASSET_TYPES.forEach(function (type) {\n strats[type + 's'] = mergeAssets;\n});\n\n/**\n * Watchers.\n *\n * Watchers hashes should not overwrite one\n * another, so we merge them as arrays.\n */\nstrats.watch = function (\n parentVal,\n childVal,\n vm,\n key\n) {\n // work around Firefox's Object.prototype.watch...\n if (parentVal === nativeWatch) { parentVal = undefined; }\n if (childVal === nativeWatch) { childVal = undefined; }\n /* istanbul ignore if */\n if (!childVal) { return Object.create(parentVal || null) }\n if (process.env.NODE_ENV !== 'production') {\n assertObjectType(key, childVal, vm);\n }\n if (!parentVal) { return childVal }\n var ret = {};\n extend(ret, parentVal);\n for (var key$1 in childVal) {\n var parent = ret[key$1];\n var child = childVal[key$1];\n if (parent && !Array.isArray(parent)) {\n parent = [parent];\n }\n ret[key$1] = parent\n ? parent.concat(child)\n : Array.isArray(child) ? child : [child];\n }\n return ret\n};\n\n/**\n * Other object hashes.\n */\nstrats.props =\nstrats.methods =\nstrats.inject =\nstrats.computed = function (\n parentVal,\n childVal,\n vm,\n key\n) {\n if (childVal && process.env.NODE_ENV !== 'production') {\n assertObjectType(key, childVal, vm);\n }\n if (!parentVal) { return childVal }\n var ret = Object.create(null);\n extend(ret, parentVal);\n if (childVal) { extend(ret, childVal); }\n return ret\n};\nstrats.provide = mergeDataOrFn;\n\n/**\n * Default strategy.\n */\nvar defaultStrat = function (parentVal, childVal) {\n return childVal === undefined\n ? parentVal\n : childVal\n};\n\n/**\n * Validate component names\n */\nfunction checkComponents (options) {\n for (var key in options.components) {\n validateComponentName(key);\n }\n}\n\nfunction validateComponentName (name) {\n if (!new RegExp((\"^[a-zA-Z][\\\\-\\\\.0-9_\" + (unicodeRegExp.source) + \"]*$\")).test(name)) {\n warn(\n 'Invalid component name: \"' + name + '\". Component names ' +\n 'should conform to valid custom element name in html5 specification.'\n );\n }\n if (isBuiltInTag(name) || config.isReservedTag(name)) {\n warn(\n 'Do not use built-in or reserved HTML elements as component ' +\n 'id: ' + name\n );\n }\n}\n\n/**\n * Ensure all props option syntax are normalized into the\n * Object-based format.\n */\nfunction normalizeProps (options, vm) {\n var props = options.props;\n if (!props) { return }\n var res = {};\n var i, val, name;\n if (Array.isArray(props)) {\n i = props.length;\n while (i--) {\n val = props[i];\n if (typeof val === 'string') {\n name = camelize(val);\n res[name] = { type: null };\n } else if (process.env.NODE_ENV !== 'production') {\n warn('props must be strings when using array syntax.');\n }\n }\n } else if (isPlainObject(props)) {\n for (var key in props) {\n val = props[key];\n name = camelize(key);\n res[name] = isPlainObject(val)\n ? val\n : { type: val };\n }\n } else if (process.env.NODE_ENV !== 'production') {\n warn(\n \"Invalid value for option \\\"props\\\": expected an Array or an Object, \" +\n \"but got \" + (toRawType(props)) + \".\",\n vm\n );\n }\n options.props = res;\n}\n\n/**\n * Normalize all injections into Object-based format\n */\nfunction normalizeInject (options, vm) {\n var inject = options.inject;\n if (!inject) { return }\n var normalized = options.inject = {};\n if (Array.isArray(inject)) {\n for (var i = 0; i < inject.length; i++) {\n normalized[inject[i]] = { from: inject[i] };\n }\n } else if (isPlainObject(inject)) {\n for (var key in inject) {\n var val = inject[key];\n normalized[key] = isPlainObject(val)\n ? extend({ from: key }, val)\n : { from: val };\n }\n } else if (process.env.NODE_ENV !== 'production') {\n warn(\n \"Invalid value for option \\\"inject\\\": expected an Array or an Object, \" +\n \"but got \" + (toRawType(inject)) + \".\",\n vm\n );\n }\n}\n\n/**\n * Normalize raw function directives into object format.\n */\nfunction normalizeDirectives (options) {\n var dirs = options.directives;\n if (dirs) {\n for (var key in dirs) {\n var def$$1 = dirs[key];\n if (typeof def$$1 === 'function') {\n dirs[key] = { bind: def$$1, update: def$$1 };\n }\n }\n }\n}\n\nfunction assertObjectType (name, value, vm) {\n if (!isPlainObject(value)) {\n warn(\n \"Invalid value for option \\\"\" + name + \"\\\": expected an Object, \" +\n \"but got \" + (toRawType(value)) + \".\",\n vm\n );\n }\n}\n\n/**\n * Merge two option objects into a new one.\n * Core utility used in both instantiation and inheritance.\n */\nfunction mergeOptions (\n parent,\n child,\n vm\n) {\n if (process.env.NODE_ENV !== 'production') {\n checkComponents(child);\n }\n\n if (typeof child === 'function') {\n child = child.options;\n }\n\n normalizeProps(child, vm);\n normalizeInject(child, vm);\n normalizeDirectives(child);\n\n // Apply extends and mixins on the child options,\n // but only if it is a raw options object that isn't\n // the result of another mergeOptions call.\n // Only merged options has the _base property.\n if (!child._base) {\n if (child.extends) {\n parent = mergeOptions(parent, child.extends, vm);\n }\n if (child.mixins) {\n for (var i = 0, l = child.mixins.length; i < l; i++) {\n parent = mergeOptions(parent, child.mixins[i], vm);\n }\n }\n }\n\n var options = {};\n var key;\n for (key in parent) {\n mergeField(key);\n }\n for (key in child) {\n if (!hasOwn(parent, key)) {\n mergeField(key);\n }\n }\n function mergeField (key) {\n var strat = strats[key] || defaultStrat;\n options[key] = strat(parent[key], child[key], vm, key);\n }\n return options\n}\n\n/**\n * Resolve an asset.\n * This function is used because child instances need access\n * to assets defined in its ancestor chain.\n */\nfunction resolveAsset (\n options,\n type,\n id,\n warnMissing\n) {\n /* istanbul ignore if */\n if (typeof id !== 'string') {\n return\n }\n var assets = options[type];\n // check local registration variations first\n if (hasOwn(assets, id)) { return assets[id] }\n var camelizedId = camelize(id);\n if (hasOwn(assets, camelizedId)) { return assets[camelizedId] }\n var PascalCaseId = capitalize(camelizedId);\n if (hasOwn(assets, PascalCaseId)) { return assets[PascalCaseId] }\n // fallback to prototype chain\n var res = assets[id] || assets[camelizedId] || assets[PascalCaseId];\n if (process.env.NODE_ENV !== 'production' && warnMissing && !res) {\n warn(\n 'Failed to resolve ' + type.slice(0, -1) + ': ' + id,\n options\n );\n }\n return res\n}\n\n/* */\n\n\n\nfunction validateProp (\n key,\n propOptions,\n propsData,\n vm\n) {\n var prop = propOptions[key];\n var absent = !hasOwn(propsData, key);\n var value = propsData[key];\n // boolean casting\n var booleanIndex = getTypeIndex(Boolean, prop.type);\n if (booleanIndex > -1) {\n if (absent && !hasOwn(prop, 'default')) {\n value = false;\n } else if (value === '' || value === hyphenate(key)) {\n // only cast empty string / same name to boolean if\n // boolean has higher priority\n var stringIndex = getTypeIndex(String, prop.type);\n if (stringIndex < 0 || booleanIndex < stringIndex) {\n value = true;\n }\n }\n }\n // check default value\n if (value === undefined) {\n value = getPropDefaultValue(vm, prop, key);\n // since the default value is a fresh copy,\n // make sure to observe it.\n var prevShouldObserve = shouldObserve;\n toggleObserving(true);\n observe(value);\n toggleObserving(prevShouldObserve);\n }\n if (\n process.env.NODE_ENV !== 'production' &&\n // skip validation for weex recycle-list child component props\n !(false)\n ) {\n assertProp(prop, key, value, vm, absent);\n }\n return value\n}\n\n/**\n * Get the default value of a prop.\n */\nfunction getPropDefaultValue (vm, prop, key) {\n // no default, return undefined\n if (!hasOwn(prop, 'default')) {\n return undefined\n }\n var def = prop.default;\n // warn against non-factory defaults for Object & Array\n if (process.env.NODE_ENV !== 'production' && isObject(def)) {\n warn(\n 'Invalid default value for prop \"' + key + '\": ' +\n 'Props with type Object/Array must use a factory function ' +\n 'to return the default value.',\n vm\n );\n }\n // the raw prop value was also undefined from previous render,\n // return previous default value to avoid unnecessary watcher trigger\n if (vm && vm.$options.propsData &&\n vm.$options.propsData[key] === undefined &&\n vm._props[key] !== undefined\n ) {\n return vm._props[key]\n }\n // call factory function for non-Function types\n // a value is Function if its prototype is function even across different execution context\n return typeof def === 'function' && getType(prop.type) !== 'Function'\n ? def.call(vm)\n : def\n}\n\n/**\n * Assert whether a prop is valid.\n */\nfunction assertProp (\n prop,\n name,\n value,\n vm,\n absent\n) {\n if (prop.required && absent) {\n warn(\n 'Missing required prop: \"' + name + '\"',\n vm\n );\n return\n }\n if (value == null && !prop.required) {\n return\n }\n var type = prop.type;\n var valid = !type || type === true;\n var expectedTypes = [];\n if (type) {\n if (!Array.isArray(type)) {\n type = [type];\n }\n for (var i = 0; i < type.length && !valid; i++) {\n var assertedType = assertType(value, type[i], vm);\n expectedTypes.push(assertedType.expectedType || '');\n valid = assertedType.valid;\n }\n }\n\n var haveExpectedTypes = expectedTypes.some(function (t) { return t; });\n if (!valid && haveExpectedTypes) {\n warn(\n getInvalidTypeMessage(name, value, expectedTypes),\n vm\n );\n return\n }\n var validator = prop.validator;\n if (validator) {\n if (!validator(value)) {\n warn(\n 'Invalid prop: custom validator check failed for prop \"' + name + '\".',\n vm\n );\n }\n }\n}\n\nvar simpleCheckRE = /^(String|Number|Boolean|Function|Symbol|BigInt)$/;\n\nfunction assertType (value, type, vm) {\n var valid;\n var expectedType = getType(type);\n if (simpleCheckRE.test(expectedType)) {\n var t = typeof value;\n valid = t === expectedType.toLowerCase();\n // for primitive wrapper objects\n if (!valid && t === 'object') {\n valid = value instanceof type;\n }\n } else if (expectedType === 'Object') {\n valid = isPlainObject(value);\n } else if (expectedType === 'Array') {\n valid = Array.isArray(value);\n } else {\n try {\n valid = value instanceof type;\n } catch (e) {\n warn('Invalid prop type: \"' + String(type) + '\" is not a constructor', vm);\n valid = false;\n }\n }\n return {\n valid: valid,\n expectedType: expectedType\n }\n}\n\nvar functionTypeCheckRE = /^\\s*function (\\w+)/;\n\n/**\n * Use function string name to check built-in types,\n * because a simple equality check will fail when running\n * across different vms / iframes.\n */\nfunction getType (fn) {\n var match = fn && fn.toString().match(functionTypeCheckRE);\n return match ? match[1] : ''\n}\n\nfunction isSameType (a, b) {\n return getType(a) === getType(b)\n}\n\nfunction getTypeIndex (type, expectedTypes) {\n if (!Array.isArray(expectedTypes)) {\n return isSameType(expectedTypes, type) ? 0 : -1\n }\n for (var i = 0, len = expectedTypes.length; i < len; i++) {\n if (isSameType(expectedTypes[i], type)) {\n return i\n }\n }\n return -1\n}\n\nfunction getInvalidTypeMessage (name, value, expectedTypes) {\n var message = \"Invalid prop: type check failed for prop \\\"\" + name + \"\\\".\" +\n \" Expected \" + (expectedTypes.map(capitalize).join(', '));\n var expectedType = expectedTypes[0];\n var receivedType = toRawType(value);\n // check if we need to specify expected value\n if (\n expectedTypes.length === 1 &&\n isExplicable(expectedType) &&\n isExplicable(typeof value) &&\n !isBoolean(expectedType, receivedType)\n ) {\n message += \" with value \" + (styleValue(value, expectedType));\n }\n message += \", got \" + receivedType + \" \";\n // check if we need to specify received value\n if (isExplicable(receivedType)) {\n message += \"with value \" + (styleValue(value, receivedType)) + \".\";\n }\n return message\n}\n\nfunction styleValue (value, type) {\n if (type === 'String') {\n return (\"\\\"\" + value + \"\\\"\")\n } else if (type === 'Number') {\n return (\"\" + (Number(value)))\n } else {\n return (\"\" + value)\n }\n}\n\nvar EXPLICABLE_TYPES = ['string', 'number', 'boolean'];\nfunction isExplicable (value) {\n return EXPLICABLE_TYPES.some(function (elem) { return value.toLowerCase() === elem; })\n}\n\nfunction isBoolean () {\n var args = [], len = arguments.length;\n while ( len-- ) args[ len ] = arguments[ len ];\n\n return args.some(function (elem) { return elem.toLowerCase() === 'boolean'; })\n}\n\n/* */\n\nfunction handleError (err, vm, info) {\n // Deactivate deps tracking while processing error handler to avoid possible infinite rendering.\n // See: https://github.com/vuejs/vuex/issues/1505\n pushTarget();\n try {\n if (vm) {\n var cur = vm;\n while ((cur = cur.$parent)) {\n var hooks = cur.$options.errorCaptured;\n if (hooks) {\n for (var i = 0; i < hooks.length; i++) {\n try {\n var capture = hooks[i].call(cur, err, vm, info) === false;\n if (capture) { return }\n } catch (e) {\n globalHandleError(e, cur, 'errorCaptured hook');\n }\n }\n }\n }\n }\n globalHandleError(err, vm, info);\n } finally {\n popTarget();\n }\n}\n\nfunction invokeWithErrorHandling (\n handler,\n context,\n args,\n vm,\n info\n) {\n var res;\n try {\n res = args ? handler.apply(context, args) : handler.call(context);\n if (res && !res._isVue && isPromise(res) && !res._handled) {\n res.catch(function (e) { return handleError(e, vm, info + \" (Promise/async)\"); });\n // issue #9511\n // avoid catch triggering multiple times when nested calls\n res._handled = true;\n }\n } catch (e) {\n handleError(e, vm, info);\n }\n return res\n}\n\nfunction globalHandleError (err, vm, info) {\n if (config.errorHandler) {\n try {\n return config.errorHandler.call(null, err, vm, info)\n } catch (e) {\n // if the user intentionally throws the original error in the handler,\n // do not log it twice\n if (e !== err) {\n logError(e, null, 'config.errorHandler');\n }\n }\n }\n logError(err, vm, info);\n}\n\nfunction logError (err, vm, info) {\n if (process.env.NODE_ENV !== 'production') {\n warn((\"Error in \" + info + \": \\\"\" + (err.toString()) + \"\\\"\"), vm);\n }\n /* istanbul ignore else */\n if ((inBrowser || inWeex) && typeof console !== 'undefined') {\n console.error(err);\n } else {\n throw err\n }\n}\n\n/* */\n\nvar isUsingMicroTask = false;\n\nvar callbacks = [];\nvar pending = false;\n\nfunction flushCallbacks () {\n pending = false;\n var copies = callbacks.slice(0);\n callbacks.length = 0;\n for (var i = 0; i < copies.length; i++) {\n copies[i]();\n }\n}\n\n// Here we have async deferring wrappers using microtasks.\n// In 2.5 we used (macro) tasks (in combination with microtasks).\n// However, it has subtle problems when state is changed right before repaint\n// (e.g. #6813, out-in transitions).\n// Also, using (macro) tasks in event handler would cause some weird behaviors\n// that cannot be circumvented (e.g. #7109, #7153, #7546, #7834, #8109).\n// So we now use microtasks everywhere, again.\n// A major drawback of this tradeoff is that there are some scenarios\n// where microtasks have too high a priority and fire in between supposedly\n// sequential events (e.g. #4521, #6690, which have workarounds)\n// or even between bubbling of the same event (#6566).\nvar timerFunc;\n\n// The nextTick behavior leverages the microtask queue, which can be accessed\n// via either native Promise.then or MutationObserver.\n// MutationObserver has wider support, however it is seriously bugged in\n// UIWebView in iOS >= 9.3.3 when triggered in touch event handlers. It\n// completely stops working after triggering a few times... so, if native\n// Promise is available, we will use it:\n/* istanbul ignore next, $flow-disable-line */\nif (typeof Promise !== 'undefined' && isNative(Promise)) {\n var p = Promise.resolve();\n timerFunc = function () {\n p.then(flushCallbacks);\n // In problematic UIWebViews, Promise.then doesn't completely break, but\n // it can get stuck in a weird state where callbacks are pushed into the\n // microtask queue but the queue isn't being flushed, until the browser\n // needs to do some other work, e.g. handle a timer. Therefore we can\n // \"force\" the microtask queue to be flushed by adding an empty timer.\n if (isIOS) { setTimeout(noop); }\n };\n isUsingMicroTask = true;\n} else if (!isIE && typeof MutationObserver !== 'undefined' && (\n isNative(MutationObserver) ||\n // PhantomJS and iOS 7.x\n MutationObserver.toString() === '[object MutationObserverConstructor]'\n)) {\n // Use MutationObserver where native Promise is not available,\n // e.g. PhantomJS, iOS7, Android 4.4\n // (#6466 MutationObserver is unreliable in IE11)\n var counter = 1;\n var observer = new MutationObserver(flushCallbacks);\n var textNode = document.createTextNode(String(counter));\n observer.observe(textNode, {\n characterData: true\n });\n timerFunc = function () {\n counter = (counter + 1) % 2;\n textNode.data = String(counter);\n };\n isUsingMicroTask = true;\n} else if (typeof setImmediate !== 'undefined' && isNative(setImmediate)) {\n // Fallback to setImmediate.\n // Technically it leverages the (macro) task queue,\n // but it is still a better choice than setTimeout.\n timerFunc = function () {\n setImmediate(flushCallbacks);\n };\n} else {\n // Fallback to setTimeout.\n timerFunc = function () {\n setTimeout(flushCallbacks, 0);\n };\n}\n\nfunction nextTick (cb, ctx) {\n var _resolve;\n callbacks.push(function () {\n if (cb) {\n try {\n cb.call(ctx);\n } catch (e) {\n handleError(e, ctx, 'nextTick');\n }\n } else if (_resolve) {\n _resolve(ctx);\n }\n });\n if (!pending) {\n pending = true;\n timerFunc();\n }\n // $flow-disable-line\n if (!cb && typeof Promise !== 'undefined') {\n return new Promise(function (resolve) {\n _resolve = resolve;\n })\n }\n}\n\n/* */\n\n/* not type checking this file because flow doesn't play well with Proxy */\n\nvar initProxy;\n\nif (process.env.NODE_ENV !== 'production') {\n var allowedGlobals = makeMap(\n 'Infinity,undefined,NaN,isFinite,isNaN,' +\n 'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' +\n 'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,BigInt,' +\n 'require' // for Webpack/Browserify\n );\n\n var warnNonPresent = function (target, key) {\n warn(\n \"Property or method \\\"\" + key + \"\\\" is not defined on the instance but \" +\n 'referenced during render. Make sure that this property is reactive, ' +\n 'either in the data option, or for class-based components, by ' +\n 'initializing the property. ' +\n 'See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.',\n target\n );\n };\n\n var warnReservedPrefix = function (target, key) {\n warn(\n \"Property \\\"\" + key + \"\\\" must be accessed with \\\"$data.\" + key + \"\\\" because \" +\n 'properties starting with \"$\" or \"_\" are not proxied in the Vue instance to ' +\n 'prevent conflicts with Vue internals. ' +\n 'See: https://vuejs.org/v2/api/#data',\n target\n );\n };\n\n var hasProxy =\n typeof Proxy !== 'undefined' && isNative(Proxy);\n\n if (hasProxy) {\n var isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta,exact');\n config.keyCodes = new Proxy(config.keyCodes, {\n set: function set (target, key, value) {\n if (isBuiltInModifier(key)) {\n warn((\"Avoid overwriting built-in modifier in config.keyCodes: .\" + key));\n return false\n } else {\n target[key] = value;\n return true\n }\n }\n });\n }\n\n var hasHandler = {\n has: function has (target, key) {\n var has = key in target;\n var isAllowed = allowedGlobals(key) ||\n (typeof key === 'string' && key.charAt(0) === '_' && !(key in target.$data));\n if (!has && !isAllowed) {\n if (key in target.$data) { warnReservedPrefix(target, key); }\n else { warnNonPresent(target, key); }\n }\n return has || !isAllowed\n }\n };\n\n var getHandler = {\n get: function get (target, key) {\n if (typeof key === 'string' && !(key in target)) {\n if (key in target.$data) { warnReservedPrefix(target, key); }\n else { warnNonPresent(target, key); }\n }\n return target[key]\n }\n };\n\n initProxy = function initProxy (vm) {\n if (hasProxy) {\n // determine which proxy handler to use\n var options = vm.$options;\n var handlers = options.render && options.render._withStripped\n ? getHandler\n : hasHandler;\n vm._renderProxy = new Proxy(vm, handlers);\n } else {\n vm._renderProxy = vm;\n }\n };\n}\n\n/* */\n\nvar seenObjects = new _Set();\n\n/**\n * Recursively traverse an object to evoke all converted\n * getters, so that every nested property inside the object\n * is collected as a \"deep\" dependency.\n */\nfunction traverse (val) {\n _traverse(val, seenObjects);\n seenObjects.clear();\n}\n\nfunction _traverse (val, seen) {\n var i, keys;\n var isA = Array.isArray(val);\n if ((!isA && !isObject(val)) || Object.isFrozen(val) || val instanceof VNode) {\n return\n }\n if (val.__ob__) {\n var depId = val.__ob__.dep.id;\n if (seen.has(depId)) {\n return\n }\n seen.add(depId);\n }\n if (isA) {\n i = val.length;\n while (i--) { _traverse(val[i], seen); }\n } else {\n keys = Object.keys(val);\n i = keys.length;\n while (i--) { _traverse(val[keys[i]], seen); }\n }\n}\n\nvar mark;\nvar measure;\n\nif (process.env.NODE_ENV !== 'production') {\n var perf = inBrowser && window.performance;\n /* istanbul ignore if */\n if (\n perf &&\n perf.mark &&\n perf.measure &&\n perf.clearMarks &&\n perf.clearMeasures\n ) {\n mark = function (tag) { return perf.mark(tag); };\n measure = function (name, startTag, endTag) {\n perf.measure(name, startTag, endTag);\n perf.clearMarks(startTag);\n perf.clearMarks(endTag);\n // perf.clearMeasures(name)\n };\n }\n}\n\n/* */\n\nvar normalizeEvent = cached(function (name) {\n var passive = name.charAt(0) === '&';\n name = passive ? name.slice(1) : name;\n var once$$1 = name.charAt(0) === '~'; // Prefixed last, checked first\n name = once$$1 ? name.slice(1) : name;\n var capture = name.charAt(0) === '!';\n name = capture ? name.slice(1) : name;\n return {\n name: name,\n once: once$$1,\n capture: capture,\n passive: passive\n }\n});\n\nfunction createFnInvoker (fns, vm) {\n function invoker () {\n var arguments$1 = arguments;\n\n var fns = invoker.fns;\n if (Array.isArray(fns)) {\n var cloned = fns.slice();\n for (var i = 0; i < cloned.length; i++) {\n invokeWithErrorHandling(cloned[i], null, arguments$1, vm, \"v-on handler\");\n }\n } else {\n // return handler return value for single handlers\n return invokeWithErrorHandling(fns, null, arguments, vm, \"v-on handler\")\n }\n }\n invoker.fns = fns;\n return invoker\n}\n\nfunction updateListeners (\n on,\n oldOn,\n add,\n remove$$1,\n createOnceHandler,\n vm\n) {\n var name, def$$1, cur, old, event;\n for (name in on) {\n def$$1 = cur = on[name];\n old = oldOn[name];\n event = normalizeEvent(name);\n if (isUndef(cur)) {\n process.env.NODE_ENV !== 'production' && warn(\n \"Invalid handler for event \\\"\" + (event.name) + \"\\\": got \" + String(cur),\n vm\n );\n } else if (isUndef(old)) {\n if (isUndef(cur.fns)) {\n cur = on[name] = createFnInvoker(cur, vm);\n }\n if (isTrue(event.once)) {\n cur = on[name] = createOnceHandler(event.name, cur, event.capture);\n }\n add(event.name, cur, event.capture, event.passive, event.params);\n } else if (cur !== old) {\n old.fns = cur;\n on[name] = old;\n }\n }\n for (name in oldOn) {\n if (isUndef(on[name])) {\n event = normalizeEvent(name);\n remove$$1(event.name, oldOn[name], event.capture);\n }\n }\n}\n\n/* */\n\nfunction mergeVNodeHook (def, hookKey, hook) {\n if (def instanceof VNode) {\n def = def.data.hook || (def.data.hook = {});\n }\n var invoker;\n var oldHook = def[hookKey];\n\n function wrappedHook () {\n hook.apply(this, arguments);\n // important: remove merged hook to ensure it's called only once\n // and prevent memory leak\n remove(invoker.fns, wrappedHook);\n }\n\n if (isUndef(oldHook)) {\n // no existing hook\n invoker = createFnInvoker([wrappedHook]);\n } else {\n /* istanbul ignore if */\n if (isDef(oldHook.fns) && isTrue(oldHook.merged)) {\n // already a merged invoker\n invoker = oldHook;\n invoker.fns.push(wrappedHook);\n } else {\n // existing plain hook\n invoker = createFnInvoker([oldHook, wrappedHook]);\n }\n }\n\n invoker.merged = true;\n def[hookKey] = invoker;\n}\n\n/* */\n\nfunction extractPropsFromVNodeData (\n data,\n Ctor,\n tag\n) {\n // we are only extracting raw values here.\n // validation and default values are handled in the child\n // component itself.\n var propOptions = Ctor.options.props;\n if (isUndef(propOptions)) {\n return\n }\n var res = {};\n var attrs = data.attrs;\n var props = data.props;\n if (isDef(attrs) || isDef(props)) {\n for (var key in propOptions) {\n var altKey = hyphenate(key);\n if (process.env.NODE_ENV !== 'production') {\n var keyInLowerCase = key.toLowerCase();\n if (\n key !== keyInLowerCase &&\n attrs && hasOwn(attrs, keyInLowerCase)\n ) {\n tip(\n \"Prop \\\"\" + keyInLowerCase + \"\\\" is passed to component \" +\n (formatComponentName(tag || Ctor)) + \", but the declared prop name is\" +\n \" \\\"\" + key + \"\\\". \" +\n \"Note that HTML attributes are case-insensitive and camelCased \" +\n \"props need to use their kebab-case equivalents when using in-DOM \" +\n \"templates. You should probably use \\\"\" + altKey + \"\\\" instead of \\\"\" + key + \"\\\".\"\n );\n }\n }\n checkProp(res, props, key, altKey, true) ||\n checkProp(res, attrs, key, altKey, false);\n }\n }\n return res\n}\n\nfunction checkProp (\n res,\n hash,\n key,\n altKey,\n preserve\n) {\n if (isDef(hash)) {\n if (hasOwn(hash, key)) {\n res[key] = hash[key];\n if (!preserve) {\n delete hash[key];\n }\n return true\n } else if (hasOwn(hash, altKey)) {\n res[key] = hash[altKey];\n if (!preserve) {\n delete hash[altKey];\n }\n return true\n }\n }\n return false\n}\n\n/* */\n\n// The template compiler attempts to minimize the need for normalization by\n// statically analyzing the template at compile time.\n//\n// For plain HTML markup, normalization can be completely skipped because the\n// generated render function is guaranteed to return Array<VNode>. There are\n// two cases where extra normalization is needed:\n\n// 1. When the children contains components - because a functional component\n// may return an Array instead of a single root. In this case, just a simple\n// normalization is needed - if any child is an Array, we flatten the whole\n// thing with Array.prototype.concat. It is guaranteed to be only 1-level deep\n// because functional components already normalize their own children.\nfunction simpleNormalizeChildren (children) {\n for (var i = 0; i < children.length; i++) {\n if (Array.isArray(children[i])) {\n return Array.prototype.concat.apply([], children)\n }\n }\n return children\n}\n\n// 2. When the children contains constructs that always generated nested Arrays,\n// e.g. <template>, <slot>, v-for, or when the children is provided by user\n// with hand-written render functions / JSX. In such cases a full normalization\n// is needed to cater to all possible types of children values.\nfunction normalizeChildren (children) {\n return isPrimitive(children)\n ? [createTextVNode(children)]\n : Array.isArray(children)\n ? normalizeArrayChildren(children)\n : undefined\n}\n\nfunction isTextNode (node) {\n return isDef(node) && isDef(node.text) && isFalse(node.isComment)\n}\n\nfunction normalizeArrayChildren (children, nestedIndex) {\n var res = [];\n var i, c, lastIndex, last;\n for (i = 0; i < children.length; i++) {\n c = children[i];\n if (isUndef(c) || typeof c === 'boolean') { continue }\n lastIndex = res.length - 1;\n last = res[lastIndex];\n // nested\n if (Array.isArray(c)) {\n if (c.length > 0) {\n c = normalizeArrayChildren(c, ((nestedIndex || '') + \"_\" + i));\n // merge adjacent text nodes\n if (isTextNode(c[0]) && isTextNode(last)) {\n res[lastIndex] = createTextVNode(last.text + (c[0]).text);\n c.shift();\n }\n res.push.apply(res, c);\n }\n } else if (isPrimitive(c)) {\n if (isTextNode(last)) {\n // merge adjacent text nodes\n // this is necessary for SSR hydration because text nodes are\n // essentially merged when rendered to HTML strings\n res[lastIndex] = createTextVNode(last.text + c);\n } else if (c !== '') {\n // convert primitive to vnode\n res.push(createTextVNode(c));\n }\n } else {\n if (isTextNode(c) && isTextNode(last)) {\n // merge adjacent text nodes\n res[lastIndex] = createTextVNode(last.text + c.text);\n } else {\n // default key for nested array children (likely generated by v-for)\n if (isTrue(children._isVList) &&\n isDef(c.tag) &&\n isUndef(c.key) &&\n isDef(nestedIndex)) {\n c.key = \"__vlist\" + nestedIndex + \"_\" + i + \"__\";\n }\n res.push(c);\n }\n }\n }\n return res\n}\n\n/* */\n\nfunction initProvide (vm) {\n var provide = vm.$options.provide;\n if (provide) {\n vm._provided = typeof provide === 'function'\n ? provide.call(vm)\n : provide;\n }\n}\n\nfunction initInjections (vm) {\n var result = resolveInject(vm.$options.inject, vm);\n if (result) {\n toggleObserving(false);\n Object.keys(result).forEach(function (key) {\n /* istanbul ignore else */\n if (process.env.NODE_ENV !== 'production') {\n defineReactive$$1(vm, key, result[key], function () {\n warn(\n \"Avoid mutating an injected value directly since the changes will be \" +\n \"overwritten whenever the provided component re-renders. \" +\n \"injection being mutated: \\\"\" + key + \"\\\"\",\n vm\n );\n });\n } else {\n defineReactive$$1(vm, key, result[key]);\n }\n });\n toggleObserving(true);\n }\n}\n\nfunction resolveInject (inject, vm) {\n if (inject) {\n // inject is :any because flow is not smart enough to figure out cached\n var result = Object.create(null);\n var keys = hasSymbol\n ? Reflect.ownKeys(inject)\n : Object.keys(inject);\n\n for (var i = 0; i < keys.length; i++) {\n var key = keys[i];\n // #6574 in case the inject object is observed...\n if (key === '__ob__') { continue }\n var provideKey = inject[key].from;\n var source = vm;\n while (source) {\n if (source._provided && hasOwn(source._provided, provideKey)) {\n result[key] = source._provided[provideKey];\n break\n }\n source = source.$parent;\n }\n if (!source) {\n if ('default' in inject[key]) {\n var provideDefault = inject[key].default;\n result[key] = typeof provideDefault === 'function'\n ? provideDefault.call(vm)\n : provideDefault;\n } else if (process.env.NODE_ENV !== 'production') {\n warn((\"Injection \\\"\" + key + \"\\\" not found\"), vm);\n }\n }\n }\n return result\n }\n}\n\n/* */\n\n\n\n/**\n * Runtime helper for resolving raw children VNodes into a slot object.\n */\nfunction resolveSlots (\n children,\n context\n) {\n if (!children || !children.length) {\n return {}\n }\n var slots = {};\n for (var i = 0, l = children.length; i < l; i++) {\n var child = children[i];\n var data = child.data;\n // remove slot attribute if the node is resolved as a Vue slot node\n if (data && data.attrs && data.attrs.slot) {\n delete data.attrs.slot;\n }\n // named slots should only be respected if the vnode was rendered in the\n // same context.\n if ((child.context === context || child.fnContext === context) &&\n data && data.slot != null\n ) {\n var name = data.slot;\n var slot = (slots[name] || (slots[name] = []));\n if (child.tag === 'template') {\n slot.push.apply(slot, child.children || []);\n } else {\n slot.push(child);\n }\n } else {\n (slots.default || (slots.default = [])).push(child);\n }\n }\n // ignore slots that contains only whitespace\n for (var name$1 in slots) {\n if (slots[name$1].every(isWhitespace)) {\n delete slots[name$1];\n }\n }\n return slots\n}\n\nfunction isWhitespace (node) {\n return (node.isComment && !node.asyncFactory) || node.text === ' '\n}\n\n/* */\n\nfunction isAsyncPlaceholder (node) {\n return node.isComment && node.asyncFactory\n}\n\n/* */\n\nfunction normalizeScopedSlots (\n slots,\n normalSlots,\n prevSlots\n) {\n var res;\n var hasNormalSlots = Object.keys(normalSlots).length > 0;\n var isStable = slots ? !!slots.$stable : !hasNormalSlots;\n var key = slots && slots.$key;\n if (!slots) {\n res = {};\n } else if (slots._normalized) {\n // fast path 1: child component re-render only, parent did not change\n return slots._normalized\n } else if (\n isStable &&\n prevSlots &&\n prevSlots !== emptyObject &&\n key === prevSlots.$key &&\n !hasNormalSlots &&\n !prevSlots.$hasNormal\n ) {\n // fast path 2: stable scoped slots w/ no normal slots to proxy,\n // only need to normalize once\n return prevSlots\n } else {\n res = {};\n for (var key$1 in slots) {\n if (slots[key$1] && key$1[0] !== '$') {\n res[key$1] = normalizeScopedSlot(normalSlots, key$1, slots[key$1]);\n }\n }\n }\n // expose normal slots on scopedSlots\n for (var key$2 in normalSlots) {\n if (!(key$2 in res)) {\n res[key$2] = proxyNormalSlot(normalSlots, key$2);\n }\n }\n // avoriaz seems to mock a non-extensible $scopedSlots object\n // and when that is passed down this would cause an error\n if (slots && Object.isExtensible(slots)) {\n (slots)._normalized = res;\n }\n def(res, '$stable', isStable);\n def(res, '$key', key);\n def(res, '$hasNormal', hasNormalSlots);\n return res\n}\n\nfunction normalizeScopedSlot(normalSlots, key, fn) {\n var normalized = function () {\n var res = arguments.length ? fn.apply(null, arguments) : fn({});\n res = res && typeof res === 'object' && !Array.isArray(res)\n ? [res] // single vnode\n : normalizeChildren(res);\n var vnode = res && res[0];\n return res && (\n !vnode ||\n (res.length === 1 && vnode.isComment && !isAsyncPlaceholder(vnode)) // #9658, #10391\n ) ? undefined\n : res\n };\n // this is a slot using the new v-slot syntax without scope. although it is\n // compiled as a scoped slot, render fn users would expect it to be present\n // on this.$slots because the usage is semantically a normal slot.\n if (fn.proxy) {\n Object.defineProperty(normalSlots, key, {\n get: normalized,\n enumerable: true,\n configurable: true\n });\n }\n return normalized\n}\n\nfunction proxyNormalSlot(slots, key) {\n return function () { return slots[key]; }\n}\n\n/* */\n\n/**\n * Runtime helper for rendering v-for lists.\n */\nfunction renderList (\n val,\n render\n) {\n var ret, i, l, keys, key;\n if (Array.isArray(val) || typeof val === 'string') {\n ret = new Array(val.length);\n for (i = 0, l = val.length; i < l; i++) {\n ret[i] = render(val[i], i);\n }\n } else if (typeof val === 'number') {\n ret = new Array(val);\n for (i = 0; i < val; i++) {\n ret[i] = render(i + 1, i);\n }\n } else if (isObject(val)) {\n if (hasSymbol && val[Symbol.iterator]) {\n ret = [];\n var iterator = val[Symbol.iterator]();\n var result = iterator.next();\n while (!result.done) {\n ret.push(render(result.value, ret.length));\n result = iterator.next();\n }\n } else {\n keys = Object.keys(val);\n ret = new Array(keys.length);\n for (i = 0, l = keys.length; i < l; i++) {\n key = keys[i];\n ret[i] = render(val[key], key, i);\n }\n }\n }\n if (!isDef(ret)) {\n ret = [];\n }\n (ret)._isVList = true;\n return ret\n}\n\n/* */\n\n/**\n * Runtime helper for rendering <slot>\n */\nfunction renderSlot (\n name,\n fallbackRender,\n props,\n bindObject\n) {\n var scopedSlotFn = this.$scopedSlots[name];\n var nodes;\n if (scopedSlotFn) {\n // scoped slot\n props = props || {};\n if (bindObject) {\n if (process.env.NODE_ENV !== 'production' && !isObject(bindObject)) {\n warn('slot v-bind without argument expects an Object', this);\n }\n props = extend(extend({}, bindObject), props);\n }\n nodes =\n scopedSlotFn(props) ||\n (typeof fallbackRender === 'function' ? fallbackRender() : fallbackRender);\n } else {\n nodes =\n this.$slots[name] ||\n (typeof fallbackRender === 'function' ? fallbackRender() : fallbackRender);\n }\n\n var target = props && props.slot;\n if (target) {\n return this.$createElement('template', { slot: target }, nodes)\n } else {\n return nodes\n }\n}\n\n/* */\n\n/**\n * Runtime helper for resolving filters\n */\nfunction resolveFilter (id) {\n return resolveAsset(this.$options, 'filters', id, true) || identity\n}\n\n/* */\n\nfunction isKeyNotMatch (expect, actual) {\n if (Array.isArray(expect)) {\n return expect.indexOf(actual) === -1\n } else {\n return expect !== actual\n }\n}\n\n/**\n * Runtime helper for checking keyCodes from config.\n * exposed as Vue.prototype._k\n * passing in eventKeyName as last argument separately for backwards compat\n */\nfunction checkKeyCodes (\n eventKeyCode,\n key,\n builtInKeyCode,\n eventKeyName,\n builtInKeyName\n) {\n var mappedKeyCode = config.keyCodes[key] || builtInKeyCode;\n if (builtInKeyName && eventKeyName && !config.keyCodes[key]) {\n return isKeyNotMatch(builtInKeyName, eventKeyName)\n } else if (mappedKeyCode) {\n return isKeyNotMatch(mappedKeyCode, eventKeyCode)\n } else if (eventKeyName) {\n return hyphenate(eventKeyName) !== key\n }\n return eventKeyCode === undefined\n}\n\n/* */\n\n/**\n * Runtime helper for merging v-bind=\"object\" into a VNode's data.\n */\nfunction bindObjectProps (\n data,\n tag,\n value,\n asProp,\n isSync\n) {\n if (value) {\n if (!isObject(value)) {\n process.env.NODE_ENV !== 'production' && warn(\n 'v-bind without argument expects an Object or Array value',\n this\n );\n } else {\n if (Array.isArray(value)) {\n value = toObject(value);\n }\n var hash;\n var loop = function ( key ) {\n if (\n key === 'class' ||\n key === 'style' ||\n isReservedAttribute(key)\n ) {\n hash = data;\n } else {\n var type = data.attrs && data.attrs.type;\n hash = asProp || config.mustUseProp(tag, type, key)\n ? data.domProps || (data.domProps = {})\n : data.attrs || (data.attrs = {});\n }\n var camelizedKey = camelize(key);\n var hyphenatedKey = hyphenate(key);\n if (!(camelizedKey in hash) && !(hyphenatedKey in hash)) {\n hash[key] = value[key];\n\n if (isSync) {\n var on = data.on || (data.on = {});\n on[(\"update:\" + key)] = function ($event) {\n value[key] = $event;\n };\n }\n }\n };\n\n for (var key in value) loop( key );\n }\n }\n return data\n}\n\n/* */\n\n/**\n * Runtime helper for rendering static trees.\n */\nfunction renderStatic (\n index,\n isInFor\n) {\n var cached = this._staticTrees || (this._staticTrees = []);\n var tree = cached[index];\n // if has already-rendered static tree and not inside v-for,\n // we can reuse the same tree.\n if (tree && !isInFor) {\n return tree\n }\n // otherwise, render a fresh tree.\n tree = cached[index] = this.$options.staticRenderFns[index].call(\n this._renderProxy,\n null,\n this // for render fns generated for functional component templates\n );\n markStatic(tree, (\"__static__\" + index), false);\n return tree\n}\n\n/**\n * Runtime helper for v-once.\n * Effectively it means marking the node as static with a unique key.\n */\nfunction markOnce (\n tree,\n index,\n key\n) {\n markStatic(tree, (\"__once__\" + index + (key ? (\"_\" + key) : \"\")), true);\n return tree\n}\n\nfunction markStatic (\n tree,\n key,\n isOnce\n) {\n if (Array.isArray(tree)) {\n for (var i = 0; i < tree.length; i++) {\n if (tree[i] && typeof tree[i] !== 'string') {\n markStaticNode(tree[i], (key + \"_\" + i), isOnce);\n }\n }\n } else {\n markStaticNode(tree, key, isOnce);\n }\n}\n\nfunction markStaticNode (node, key, isOnce) {\n node.isStatic = true;\n node.key = key;\n node.isOnce = isOnce;\n}\n\n/* */\n\nfunction bindObjectListeners (data, value) {\n if (value) {\n if (!isPlainObject(value)) {\n process.env.NODE_ENV !== 'production' && warn(\n 'v-on without argument expects an Object value',\n this\n );\n } else {\n var on = data.on = data.on ? extend({}, data.on) : {};\n for (var key in value) {\n var existing = on[key];\n var ours = value[key];\n on[key] = existing ? [].concat(existing, ours) : ours;\n }\n }\n }\n return data\n}\n\n/* */\n\nfunction resolveScopedSlots (\n fns, // see flow/vnode\n res,\n // the following are added in 2.6\n hasDynamicKeys,\n contentHashKey\n) {\n res = res || { $stable: !hasDynamicKeys };\n for (var i = 0; i < fns.length; i++) {\n var slot = fns[i];\n if (Array.isArray(slot)) {\n resolveScopedSlots(slot, res, hasDynamicKeys);\n } else if (slot) {\n // marker for reverse proxying v-slot without scope on this.$slots\n if (slot.proxy) {\n slot.fn.proxy = true;\n }\n res[slot.key] = slot.fn;\n }\n }\n if (contentHashKey) {\n (res).$key = contentHashKey;\n }\n return res\n}\n\n/* */\n\nfunction bindDynamicKeys (baseObj, values) {\n for (var i = 0; i < values.length; i += 2) {\n var key = values[i];\n if (typeof key === 'string' && key) {\n baseObj[values[i]] = values[i + 1];\n } else if (process.env.NODE_ENV !== 'production' && key !== '' && key !== null) {\n // null is a special value for explicitly removing a binding\n warn(\n (\"Invalid value for dynamic directive argument (expected string or null): \" + key),\n this\n );\n }\n }\n return baseObj\n}\n\n// helper to dynamically append modifier runtime markers to event names.\n// ensure only append when value is already string, otherwise it will be cast\n// to string and cause the type check to miss.\nfunction prependModifier (value, symbol) {\n return typeof value === 'string' ? symbol + value : value\n}\n\n/* */\n\nfunction installRenderHelpers (target) {\n target._o = markOnce;\n target._n = toNumber;\n target._s = toString;\n target._l = renderList;\n target._t = renderSlot;\n target._q = looseEqual;\n target._i = looseIndexOf;\n target._m = renderStatic;\n target._f = resolveFilter;\n target._k = checkKeyCodes;\n target._b = bindObjectProps;\n target._v = createTextVNode;\n target._e = createEmptyVNode;\n target._u = resolveScopedSlots;\n target._g = bindObjectListeners;\n target._d = bindDynamicKeys;\n target._p = prependModifier;\n}\n\n/* */\n\nfunction FunctionalRenderContext (\n data,\n props,\n children,\n parent,\n Ctor\n) {\n var this$1 = this;\n\n var options = Ctor.options;\n // ensure the createElement function in functional components\n // gets a unique context - this is necessary for correct named slot check\n var contextVm;\n if (hasOwn(parent, '_uid')) {\n contextVm = Object.create(parent);\n // $flow-disable-line\n contextVm._original = parent;\n } else {\n // the context vm passed in is a functional context as well.\n // in this case we want to make sure we are able to get a hold to the\n // real context instance.\n contextVm = parent;\n // $flow-disable-line\n parent = parent._original;\n }\n var isCompiled = isTrue(options._compiled);\n var needNormalization = !isCompiled;\n\n this.data = data;\n this.props = props;\n this.children = children;\n this.parent = parent;\n this.listeners = data.on || emptyObject;\n this.injections = resolveInject(options.inject, parent);\n this.slots = function () {\n if (!this$1.$slots) {\n normalizeScopedSlots(\n data.scopedSlots,\n this$1.$slots = resolveSlots(children, parent)\n );\n }\n return this$1.$slots\n };\n\n Object.defineProperty(this, 'scopedSlots', ({\n enumerable: true,\n get: function get () {\n return normalizeScopedSlots(data.scopedSlots, this.slots())\n }\n }));\n\n // support for compiled functional template\n if (isCompiled) {\n // exposing $options for renderStatic()\n this.$options = options;\n // pre-resolve slots for renderSlot()\n this.$slots = this.slots();\n this.$scopedSlots = normalizeScopedSlots(data.scopedSlots, this.$slots);\n }\n\n if (options._scopeId) {\n this._c = function (a, b, c, d) {\n var vnode = createElement(contextVm, a, b, c, d, needNormalization);\n if (vnode && !Array.isArray(vnode)) {\n vnode.fnScopeId = options._scopeId;\n vnode.fnContext = parent;\n }\n return vnode\n };\n } else {\n this._c = function (a, b, c, d) { return createElement(contextVm, a, b, c, d, needNormalization); };\n }\n}\n\ninstallRenderHelpers(FunctionalRenderContext.prototype);\n\nfunction createFunctionalComponent (\n Ctor,\n propsData,\n data,\n contextVm,\n children\n) {\n var options = Ctor.options;\n var props = {};\n var propOptions = options.props;\n if (isDef(propOptions)) {\n for (var key in propOptions) {\n props[key] = validateProp(key, propOptions, propsData || emptyObject);\n }\n } else {\n if (isDef(data.attrs)) { mergeProps(props, data.attrs); }\n if (isDef(data.props)) { mergeProps(props, data.props); }\n }\n\n var renderContext = new FunctionalRenderContext(\n data,\n props,\n children,\n contextVm,\n Ctor\n );\n\n var vnode = options.render.call(null, renderContext._c, renderContext);\n\n if (vnode instanceof VNode) {\n return cloneAndMarkFunctionalResult(vnode, data, renderContext.parent, options, renderContext)\n } else if (Array.isArray(vnode)) {\n var vnodes = normalizeChildren(vnode) || [];\n var res = new Array(vnodes.length);\n for (var i = 0; i < vnodes.length; i++) {\n res[i] = cloneAndMarkFunctionalResult(vnodes[i], data, renderContext.parent, options, renderContext);\n }\n return res\n }\n}\n\nfunction cloneAndMarkFunctionalResult (vnode, data, contextVm, options, renderContext) {\n // #7817 clone node before setting fnContext, otherwise if the node is reused\n // (e.g. it was from a cached normal slot) the fnContext causes named slots\n // that should not be matched to match.\n var clone = cloneVNode(vnode);\n clone.fnContext = contextVm;\n clone.fnOptions = options;\n if (process.env.NODE_ENV !== 'production') {\n (clone.devtoolsMeta = clone.devtoolsMeta || {}).renderContext = renderContext;\n }\n if (data.slot) {\n (clone.data || (clone.data = {})).slot = data.slot;\n }\n return clone\n}\n\nfunction mergeProps (to, from) {\n for (var key in from) {\n to[camelize(key)] = from[key];\n }\n}\n\n/* */\n\n/* */\n\n/* */\n\n/* */\n\n// inline hooks to be invoked on component VNodes during patch\nvar componentVNodeHooks = {\n init: function init (vnode, hydrating) {\n if (\n vnode.componentInstance &&\n !vnode.componentInstance._isDestroyed &&\n vnode.data.keepAlive\n ) {\n // kept-alive components, treat as a patch\n var mountedNode = vnode; // work around flow\n componentVNodeHooks.prepatch(mountedNode, mountedNode);\n } else {\n var child = vnode.componentInstance = createComponentInstanceForVnode(\n vnode,\n activeInstance\n );\n child.$mount(hydrating ? vnode.elm : undefined, hydrating);\n }\n },\n\n prepatch: function prepatch (oldVnode, vnode) {\n var options = vnode.componentOptions;\n var child = vnode.componentInstance = oldVnode.componentInstance;\n updateChildComponent(\n child,\n options.propsData, // updated props\n options.listeners, // updated listeners\n vnode, // new parent vnode\n options.children // new children\n );\n },\n\n insert: function insert (vnode) {\n var context = vnode.context;\n var componentInstance = vnode.componentInstance;\n if (!componentInstance._isMounted) {\n componentInstance._isMounted = true;\n callHook(componentInstance, 'mounted');\n }\n if (vnode.data.keepAlive) {\n if (context._isMounted) {\n // vue-router#1212\n // During updates, a kept-alive component's child components may\n // change, so directly walking the tree here may call activated hooks\n // on incorrect children. Instead we push them into a queue which will\n // be processed after the whole patch process ended.\n queueActivatedComponent(componentInstance);\n } else {\n activateChildComponent(componentInstance, true /* direct */);\n }\n }\n },\n\n destroy: function destroy (vnode) {\n var componentInstance = vnode.componentInstance;\n if (!componentInstance._isDestroyed) {\n if (!vnode.data.keepAlive) {\n componentInstance.$destroy();\n } else {\n deactivateChildComponent(componentInstance, true /* direct */);\n }\n }\n }\n};\n\nvar hooksToMerge = Object.keys(componentVNodeHooks);\n\nfunction createComponent (\n Ctor,\n data,\n context,\n children,\n tag\n) {\n if (isUndef(Ctor)) {\n return\n }\n\n var baseCtor = context.$options._base;\n\n // plain options object: turn it into a constructor\n if (isObject(Ctor)) {\n Ctor = baseCtor.extend(Ctor);\n }\n\n // if at this stage it's not a constructor or an async component factory,\n // reject.\n if (typeof Ctor !== 'function') {\n if (process.env.NODE_ENV !== 'production') {\n warn((\"Invalid Component definition: \" + (String(Ctor))), context);\n }\n return\n }\n\n // async component\n var asyncFactory;\n if (isUndef(Ctor.cid)) {\n asyncFactory = Ctor;\n Ctor = resolveAsyncComponent(asyncFactory, baseCtor);\n if (Ctor === undefined) {\n // return a placeholder node for async component, which is rendered\n // as a comment node but preserves all the raw information for the node.\n // the information will be used for async server-rendering and hydration.\n return createAsyncPlaceholder(\n asyncFactory,\n data,\n context,\n children,\n tag\n )\n }\n }\n\n data = data || {};\n\n // resolve constructor options in case global mixins are applied after\n // component constructor creation\n resolveConstructorOptions(Ctor);\n\n // transform component v-model data into props & events\n if (isDef(data.model)) {\n transformModel(Ctor.options, data);\n }\n\n // extract props\n var propsData = extractPropsFromVNodeData(data, Ctor, tag);\n\n // functional component\n if (isTrue(Ctor.options.functional)) {\n return createFunctionalComponent(Ctor, propsData, data, context, children)\n }\n\n // extract listeners, since these needs to be treated as\n // child component listeners instead of DOM listeners\n var listeners = data.on;\n // replace with listeners with .native modifier\n // so it gets processed during parent component patch.\n data.on = data.nativeOn;\n\n if (isTrue(Ctor.options.abstract)) {\n // abstract components do not keep anything\n // other than props & listeners & slot\n\n // work around flow\n var slot = data.slot;\n data = {};\n if (slot) {\n data.slot = slot;\n }\n }\n\n // install component management hooks onto the placeholder node\n installComponentHooks(data);\n\n // return a placeholder vnode\n var name = Ctor.options.name || tag;\n var vnode = new VNode(\n (\"vue-component-\" + (Ctor.cid) + (name ? (\"-\" + name) : '')),\n data, undefined, undefined, undefined, context,\n { Ctor: Ctor, propsData: propsData, listeners: listeners, tag: tag, children: children },\n asyncFactory\n );\n\n return vnode\n}\n\nfunction createComponentInstanceForVnode (\n // we know it's MountedComponentVNode but flow doesn't\n vnode,\n // activeInstance in lifecycle state\n parent\n) {\n var options = {\n _isComponent: true,\n _parentVnode: vnode,\n parent: parent\n };\n // check inline-template render functions\n var inlineTemplate = vnode.data.inlineTemplate;\n if (isDef(inlineTemplate)) {\n options.render = inlineTemplate.render;\n options.staticRenderFns = inlineTemplate.staticRenderFns;\n }\n return new vnode.componentOptions.Ctor(options)\n}\n\nfunction installComponentHooks (data) {\n var hooks = data.hook || (data.hook = {});\n for (var i = 0; i < hooksToMerge.length; i++) {\n var key = hooksToMerge[i];\n var existing = hooks[key];\n var toMerge = componentVNodeHooks[key];\n if (existing !== toMerge && !(existing && existing._merged)) {\n hooks[key] = existing ? mergeHook$1(toMerge, existing) : toMerge;\n }\n }\n}\n\nfunction mergeHook$1 (f1, f2) {\n var merged = function (a, b) {\n // flow complains about extra args which is why we use any\n f1(a, b);\n f2(a, b);\n };\n merged._merged = true;\n return merged\n}\n\n// transform component v-model info (value and callback) into\n// prop and event handler respectively.\nfunction transformModel (options, data) {\n var prop = (options.model && options.model.prop) || 'value';\n var event = (options.model && options.model.event) || 'input'\n ;(data.attrs || (data.attrs = {}))[prop] = data.model.value;\n var on = data.on || (data.on = {});\n var existing = on[event];\n var callback = data.model.callback;\n if (isDef(existing)) {\n if (\n Array.isArray(existing)\n ? existing.indexOf(callback) === -1\n : existing !== callback\n ) {\n on[event] = [callback].concat(existing);\n }\n } else {\n on[event] = callback;\n }\n}\n\n/* */\n\nvar SIMPLE_NORMALIZE = 1;\nvar ALWAYS_NORMALIZE = 2;\n\n// wrapper function for providing a more flexible interface\n// without getting yelled at by flow\nfunction createElement (\n context,\n tag,\n data,\n children,\n normalizationType,\n alwaysNormalize\n) {\n if (Array.isArray(data) || isPrimitive(data)) {\n normalizationType = children;\n children = data;\n data = undefined;\n }\n if (isTrue(alwaysNormalize)) {\n normalizationType = ALWAYS_NORMALIZE;\n }\n return _createElement(context, tag, data, children, normalizationType)\n}\n\nfunction _createElement (\n context,\n tag,\n data,\n children,\n normalizationType\n) {\n if (isDef(data) && isDef((data).__ob__)) {\n process.env.NODE_ENV !== 'production' && warn(\n \"Avoid using observed data object as vnode data: \" + (JSON.stringify(data)) + \"\\n\" +\n 'Always create fresh vnode data objects in each render!',\n context\n );\n return createEmptyVNode()\n }\n // object syntax in v-bind\n if (isDef(data) && isDef(data.is)) {\n tag = data.is;\n }\n if (!tag) {\n // in case of component :is set to falsy value\n return createEmptyVNode()\n }\n // warn against non-primitive key\n if (process.env.NODE_ENV !== 'production' &&\n isDef(data) && isDef(data.key) && !isPrimitive(data.key)\n ) {\n {\n warn(\n 'Avoid using non-primitive value as key, ' +\n 'use string/number value instead.',\n context\n );\n }\n }\n // support single function children as default scoped slot\n if (Array.isArray(children) &&\n typeof children[0] === 'function'\n ) {\n data = data || {};\n data.scopedSlots = { default: children[0] };\n children.length = 0;\n }\n if (normalizationType === ALWAYS_NORMALIZE) {\n children = normalizeChildren(children);\n } else if (normalizationType === SIMPLE_NORMALIZE) {\n children = simpleNormalizeChildren(children);\n }\n var vnode, ns;\n if (typeof tag === 'string') {\n var Ctor;\n ns = (context.$vnode && context.$vnode.ns) || config.getTagNamespace(tag);\n if (config.isReservedTag(tag)) {\n // platform built-in elements\n if (process.env.NODE_ENV !== 'production' && isDef(data) && isDef(data.nativeOn) && data.tag !== 'component') {\n warn(\n (\"The .native modifier for v-on is only valid on components but it was used on <\" + tag + \">.\"),\n context\n );\n }\n vnode = new VNode(\n config.parsePlatformTagName(tag), data, children,\n undefined, undefined, context\n );\n } else if ((!data || !data.pre) && isDef(Ctor = resolveAsset(context.$options, 'components', tag))) {\n // component\n vnode = createComponent(Ctor, data, context, children, tag);\n } else {\n // unknown or unlisted namespaced elements\n // check at runtime because it may get assigned a namespace when its\n // parent normalizes children\n vnode = new VNode(\n tag, data, children,\n undefined, undefined, context\n );\n }\n } else {\n // direct component options / constructor\n vnode = createComponent(tag, data, context, children);\n }\n if (Array.isArray(vnode)) {\n return vnode\n } else if (isDef(vnode)) {\n if (isDef(ns)) { applyNS(vnode, ns); }\n if (isDef(data)) { registerDeepBindings(data); }\n return vnode\n } else {\n return createEmptyVNode()\n }\n}\n\nfunction applyNS (vnode, ns, force) {\n vnode.ns = ns;\n if (vnode.tag === 'foreignObject') {\n // use default namespace inside foreignObject\n ns = undefined;\n force = true;\n }\n if (isDef(vnode.children)) {\n for (var i = 0, l = vnode.children.length; i < l; i++) {\n var child = vnode.children[i];\n if (isDef(child.tag) && (\n isUndef(child.ns) || (isTrue(force) && child.tag !== 'svg'))) {\n applyNS(child, ns, force);\n }\n }\n }\n}\n\n// ref #5318\n// necessary to ensure parent re-render when deep bindings like :style and\n// :class are used on slot nodes\nfunction registerDeepBindings (data) {\n if (isObject(data.style)) {\n traverse(data.style);\n }\n if (isObject(data.class)) {\n traverse(data.class);\n }\n}\n\n/* */\n\nfunction initRender (vm) {\n vm._vnode = null; // the root of the child tree\n vm._staticTrees = null; // v-once cached trees\n var options = vm.$options;\n var parentVnode = vm.$vnode = options._parentVnode; // the placeholder node in parent tree\n var renderContext = parentVnode && parentVnode.context;\n vm.$slots = resolveSlots(options._renderChildren, renderContext);\n vm.$scopedSlots = emptyObject;\n // bind the createElement fn to this instance\n // so that we get proper render context inside it.\n // args order: tag, data, children, normalizationType, alwaysNormalize\n // internal version is used by render functions compiled from templates\n vm._c = function (a, b, c, d) { return createElement(vm, a, b, c, d, false); };\n // normalization is always applied for the public version, used in\n // user-written render functions.\n vm.$createElement = function (a, b, c, d) { return createElement(vm, a, b, c, d, true); };\n\n // $attrs & $listeners are exposed for easier HOC creation.\n // they need to be reactive so that HOCs using them are always updated\n var parentData = parentVnode && parentVnode.data;\n\n /* istanbul ignore else */\n if (process.env.NODE_ENV !== 'production') {\n defineReactive$$1(vm, '$attrs', parentData && parentData.attrs || emptyObject, function () {\n !isUpdatingChildComponent && warn(\"$attrs is readonly.\", vm);\n }, true);\n defineReactive$$1(vm, '$listeners', options._parentListeners || emptyObject, function () {\n !isUpdatingChildComponent && warn(\"$listeners is readonly.\", vm);\n }, true);\n } else {\n defineReactive$$1(vm, '$attrs', parentData && parentData.attrs || emptyObject, null, true);\n defineReactive$$1(vm, '$listeners', options._parentListeners || emptyObject, null, true);\n }\n}\n\nvar currentRenderingInstance = null;\n\nfunction renderMixin (Vue) {\n // install runtime convenience helpers\n installRenderHelpers(Vue.prototype);\n\n Vue.prototype.$nextTick = function (fn) {\n return nextTick(fn, this)\n };\n\n Vue.prototype._render = function () {\n var vm = this;\n var ref = vm.$options;\n var render = ref.render;\n var _parentVnode = ref._parentVnode;\n\n if (_parentVnode) {\n vm.$scopedSlots = normalizeScopedSlots(\n _parentVnode.data.scopedSlots,\n vm.$slots,\n vm.$scopedSlots\n );\n }\n\n // set parent vnode. this allows render functions to have access\n // to the data on the placeholder node.\n vm.$vnode = _parentVnode;\n // render self\n var vnode;\n try {\n // There's no need to maintain a stack because all render fns are called\n // separately from one another. Nested component's render fns are called\n // when parent component is patched.\n currentRenderingInstance = vm;\n vnode = render.call(vm._renderProxy, vm.$createElement);\n } catch (e) {\n handleError(e, vm, \"render\");\n // return error render result,\n // or previous vnode to prevent render error causing blank component\n /* istanbul ignore else */\n if (process.env.NODE_ENV !== 'production' && vm.$options.renderError) {\n try {\n vnode = vm.$options.renderError.call(vm._renderProxy, vm.$createElement, e);\n } catch (e) {\n handleError(e, vm, \"renderError\");\n vnode = vm._vnode;\n }\n } else {\n vnode = vm._vnode;\n }\n } finally {\n currentRenderingInstance = null;\n }\n // if the returned array contains only a single node, allow it\n if (Array.isArray(vnode) && vnode.length === 1) {\n vnode = vnode[0];\n }\n // return empty vnode in case the render function errored out\n if (!(vnode instanceof VNode)) {\n if (process.env.NODE_ENV !== 'production' && Array.isArray(vnode)) {\n warn(\n 'Multiple root nodes returned from render function. Render function ' +\n 'should return a single root node.',\n vm\n );\n }\n vnode = createEmptyVNode();\n }\n // set parent\n vnode.parent = _parentVnode;\n return vnode\n };\n}\n\n/* */\n\nfunction ensureCtor (comp, base) {\n if (\n comp.__esModule ||\n (hasSymbol && comp[Symbol.toStringTag] === 'Module')\n ) {\n comp = comp.default;\n }\n return isObject(comp)\n ? base.extend(comp)\n : comp\n}\n\nfunction createAsyncPlaceholder (\n factory,\n data,\n context,\n children,\n tag\n) {\n var node = createEmptyVNode();\n node.asyncFactory = factory;\n node.asyncMeta = { data: data, context: context, children: children, tag: tag };\n return node\n}\n\nfunction resolveAsyncComponent (\n factory,\n baseCtor\n) {\n if (isTrue(factory.error) && isDef(factory.errorComp)) {\n return factory.errorComp\n }\n\n if (isDef(factory.resolved)) {\n return factory.resolved\n }\n\n var owner = currentRenderingInstance;\n if (owner && isDef(factory.owners) && factory.owners.indexOf(owner) === -1) {\n // already pending\n factory.owners.push(owner);\n }\n\n if (isTrue(factory.loading) && isDef(factory.loadingComp)) {\n return factory.loadingComp\n }\n\n if (owner && !isDef(factory.owners)) {\n var owners = factory.owners = [owner];\n var sync = true;\n var timerLoading = null;\n var timerTimeout = null\n\n ;(owner).$on('hook:destroyed', function () { return remove(owners, owner); });\n\n var forceRender = function (renderCompleted) {\n for (var i = 0, l = owners.length; i < l; i++) {\n (owners[i]).$forceUpdate();\n }\n\n if (renderCompleted) {\n owners.length = 0;\n if (timerLoading !== null) {\n clearTimeout(timerLoading);\n timerLoading = null;\n }\n if (timerTimeout !== null) {\n clearTimeout(timerTimeout);\n timerTimeout = null;\n }\n }\n };\n\n var resolve = once(function (res) {\n // cache resolved\n factory.resolved = ensureCtor(res, baseCtor);\n // invoke callbacks only if this is not a synchronous resolve\n // (async resolves are shimmed as synchronous during SSR)\n if (!sync) {\n forceRender(true);\n } else {\n owners.length = 0;\n }\n });\n\n var reject = once(function (reason) {\n process.env.NODE_ENV !== 'production' && warn(\n \"Failed to resolve async component: \" + (String(factory)) +\n (reason ? (\"\\nReason: \" + reason) : '')\n );\n if (isDef(factory.errorComp)) {\n factory.error = true;\n forceRender(true);\n }\n });\n\n var res = factory(resolve, reject);\n\n if (isObject(res)) {\n if (isPromise(res)) {\n // () => Promise\n if (isUndef(factory.resolved)) {\n res.then(resolve, reject);\n }\n } else if (isPromise(res.component)) {\n res.component.then(resolve, reject);\n\n if (isDef(res.error)) {\n factory.errorComp = ensureCtor(res.error, baseCtor);\n }\n\n if (isDef(res.loading)) {\n factory.loadingComp = ensureCtor(res.loading, baseCtor);\n if (res.delay === 0) {\n factory.loading = true;\n } else {\n timerLoading = setTimeout(function () {\n timerLoading = null;\n if (isUndef(factory.resolved) && isUndef(factory.error)) {\n factory.loading = true;\n forceRender(false);\n }\n }, res.delay || 200);\n }\n }\n\n if (isDef(res.timeout)) {\n timerTimeout = setTimeout(function () {\n timerTimeout = null;\n if (isUndef(factory.resolved)) {\n reject(\n process.env.NODE_ENV !== 'production'\n ? (\"timeout (\" + (res.timeout) + \"ms)\")\n : null\n );\n }\n }, res.timeout);\n }\n }\n }\n\n sync = false;\n // return in case resolved synchronously\n return factory.loading\n ? factory.loadingComp\n : factory.resolved\n }\n}\n\n/* */\n\nfunction getFirstComponentChild (children) {\n if (Array.isArray(children)) {\n for (var i = 0; i < children.length; i++) {\n var c = children[i];\n if (isDef(c) && (isDef(c.componentOptions) || isAsyncPlaceholder(c))) {\n return c\n }\n }\n }\n}\n\n/* */\n\n/* */\n\nfunction initEvents (vm) {\n vm._events = Object.create(null);\n vm._hasHookEvent = false;\n // init parent attached events\n var listeners = vm.$options._parentListeners;\n if (listeners) {\n updateComponentListeners(vm, listeners);\n }\n}\n\nvar target;\n\nfunction add (event, fn) {\n target.$on(event, fn);\n}\n\nfunction remove$1 (event, fn) {\n target.$off(event, fn);\n}\n\nfunction createOnceHandler (event, fn) {\n var _target = target;\n return function onceHandler () {\n var res = fn.apply(null, arguments);\n if (res !== null) {\n _target.$off(event, onceHandler);\n }\n }\n}\n\nfunction updateComponentListeners (\n vm,\n listeners,\n oldListeners\n) {\n target = vm;\n updateListeners(listeners, oldListeners || {}, add, remove$1, createOnceHandler, vm);\n target = undefined;\n}\n\nfunction eventsMixin (Vue) {\n var hookRE = /^hook:/;\n Vue.prototype.$on = function (event, fn) {\n var vm = this;\n if (Array.isArray(event)) {\n for (var i = 0, l = event.length; i < l; i++) {\n vm.$on(event[i], fn);\n }\n } else {\n (vm._events[event] || (vm._events[event] = [])).push(fn);\n // optimize hook:event cost by using a boolean flag marked at registration\n // instead of a hash lookup\n if (hookRE.test(event)) {\n vm._hasHookEvent = true;\n }\n }\n return vm\n };\n\n Vue.prototype.$once = function (event, fn) {\n var vm = this;\n function on () {\n vm.$off(event, on);\n fn.apply(vm, arguments);\n }\n on.fn = fn;\n vm.$on(event, on);\n return vm\n };\n\n Vue.prototype.$off = function (event, fn) {\n var vm = this;\n // all\n if (!arguments.length) {\n vm._events = Object.create(null);\n return vm\n }\n // array of events\n if (Array.isArray(event)) {\n for (var i$1 = 0, l = event.length; i$1 < l; i$1++) {\n vm.$off(event[i$1], fn);\n }\n return vm\n }\n // specific event\n var cbs = vm._events[event];\n if (!cbs) {\n return vm\n }\n if (!fn) {\n vm._events[event] = null;\n return vm\n }\n // specific handler\n var cb;\n var i = cbs.length;\n while (i--) {\n cb = cbs[i];\n if (cb === fn || cb.fn === fn) {\n cbs.splice(i, 1);\n break\n }\n }\n return vm\n };\n\n Vue.prototype.$emit = function (event) {\n var vm = this;\n if (process.env.NODE_ENV !== 'production') {\n var lowerCaseEvent = event.toLowerCase();\n if (lowerCaseEvent !== event && vm._events[lowerCaseEvent]) {\n tip(\n \"Event \\\"\" + lowerCaseEvent + \"\\\" is emitted in component \" +\n (formatComponentName(vm)) + \" but the handler is registered for \\\"\" + event + \"\\\". \" +\n \"Note that HTML attributes are case-insensitive and you cannot use \" +\n \"v-on to listen to camelCase events when using in-DOM templates. \" +\n \"You should probably use \\\"\" + (hyphenate(event)) + \"\\\" instead of \\\"\" + event + \"\\\".\"\n );\n }\n }\n var cbs = vm._events[event];\n if (cbs) {\n cbs = cbs.length > 1 ? toArray(cbs) : cbs;\n var args = toArray(arguments, 1);\n var info = \"event handler for \\\"\" + event + \"\\\"\";\n for (var i = 0, l = cbs.length; i < l; i++) {\n invokeWithErrorHandling(cbs[i], vm, args, vm, info);\n }\n }\n return vm\n };\n}\n\n/* */\n\nvar activeInstance = null;\nvar isUpdatingChildComponent = false;\n\nfunction setActiveInstance(vm) {\n var prevActiveInstance = activeInstance;\n activeInstance = vm;\n return function () {\n activeInstance = prevActiveInstance;\n }\n}\n\nfunction initLifecycle (vm) {\n var options = vm.$options;\n\n // locate first non-abstract parent\n var parent = options.parent;\n if (parent && !options.abstract) {\n while (parent.$options.abstract && parent.$parent) {\n parent = parent.$parent;\n }\n parent.$children.push(vm);\n }\n\n vm.$parent = parent;\n vm.$root = parent ? parent.$root : vm;\n\n vm.$children = [];\n vm.$refs = {};\n\n vm._watcher = null;\n vm._inactive = null;\n vm._directInactive = false;\n vm._isMounted = false;\n vm._isDestroyed = false;\n vm._isBeingDestroyed = false;\n}\n\nfunction lifecycleMixin (Vue) {\n Vue.prototype._update = function (vnode, hydrating) {\n var vm = this;\n var prevEl = vm.$el;\n var prevVnode = vm._vnode;\n var restoreActiveInstance = setActiveInstance(vm);\n vm._vnode = vnode;\n // Vue.prototype.__patch__ is injected in entry points\n // based on the rendering backend used.\n if (!prevVnode) {\n // initial render\n vm.$el = vm.__patch__(vm.$el, vnode, hydrating, false /* removeOnly */);\n } else {\n // updates\n vm.$el = vm.__patch__(prevVnode, vnode);\n }\n restoreActiveInstance();\n // update __vue__ reference\n if (prevEl) {\n prevEl.__vue__ = null;\n }\n if (vm.$el) {\n vm.$el.__vue__ = vm;\n }\n // if parent is an HOC, update its $el as well\n if (vm.$vnode && vm.$parent && vm.$vnode === vm.$parent._vnode) {\n vm.$parent.$el = vm.$el;\n }\n // updated hook is called by the scheduler to ensure that children are\n // updated in a parent's updated hook.\n };\n\n Vue.prototype.$forceUpdate = function () {\n var vm = this;\n if (vm._watcher) {\n vm._watcher.update();\n }\n };\n\n Vue.prototype.$destroy = function () {\n var vm = this;\n if (vm._isBeingDestroyed) {\n return\n }\n callHook(vm, 'beforeDestroy');\n vm._isBeingDestroyed = true;\n // remove self from parent\n var parent = vm.$parent;\n if (parent && !parent._isBeingDestroyed && !vm.$options.abstract) {\n remove(parent.$children, vm);\n }\n // teardown watchers\n if (vm._watcher) {\n vm._watcher.teardown();\n }\n var i = vm._watchers.length;\n while (i--) {\n vm._watchers[i].teardown();\n }\n // remove reference from data ob\n // frozen object may not have observer.\n if (vm._data.__ob__) {\n vm._data.__ob__.vmCount--;\n }\n // call the last hook...\n vm._isDestroyed = true;\n // invoke destroy hooks on current rendered tree\n vm.__patch__(vm._vnode, null);\n // fire destroyed hook\n callHook(vm, 'destroyed');\n // turn off all instance listeners.\n vm.$off();\n // remove __vue__ reference\n if (vm.$el) {\n vm.$el.__vue__ = null;\n }\n // release circular reference (#6759)\n if (vm.$vnode) {\n vm.$vnode.parent = null;\n }\n };\n}\n\nfunction mountComponent (\n vm,\n el,\n hydrating\n) {\n vm.$el = el;\n if (!vm.$options.render) {\n vm.$options.render = createEmptyVNode;\n if (process.env.NODE_ENV !== 'production') {\n /* istanbul ignore if */\n if ((vm.$options.template && vm.$options.template.charAt(0) !== '#') ||\n vm.$options.el || el) {\n warn(\n 'You are using the runtime-only build of Vue where the template ' +\n 'compiler is not available. Either pre-compile the templates into ' +\n 'render functions, or use the compiler-included build.',\n vm\n );\n } else {\n warn(\n 'Failed to mount component: template or render function not defined.',\n vm\n );\n }\n }\n }\n callHook(vm, 'beforeMount');\n\n var updateComponent;\n /* istanbul ignore if */\n if (process.env.NODE_ENV !== 'production' && config.performance && mark) {\n updateComponent = function () {\n var name = vm._name;\n var id = vm._uid;\n var startTag = \"vue-perf-start:\" + id;\n var endTag = \"vue-perf-end:\" + id;\n\n mark(startTag);\n var vnode = vm._render();\n mark(endTag);\n measure((\"vue \" + name + \" render\"), startTag, endTag);\n\n mark(startTag);\n vm._update(vnode, hydrating);\n mark(endTag);\n measure((\"vue \" + name + \" patch\"), startTag, endTag);\n };\n } else {\n updateComponent = function () {\n vm._update(vm._render(), hydrating);\n };\n }\n\n // we set this to vm._watcher inside the watcher's constructor\n // since the watcher's initial patch may call $forceUpdate (e.g. inside child\n // component's mounted hook), which relies on vm._watcher being already defined\n new Watcher(vm, updateComponent, noop, {\n before: function before () {\n if (vm._isMounted && !vm._isDestroyed) {\n callHook(vm, 'beforeUpdate');\n }\n }\n }, true /* isRenderWatcher */);\n hydrating = false;\n\n // manually mounted instance, call mounted on self\n // mounted is called for render-created child components in its inserted hook\n if (vm.$vnode == null) {\n vm._isMounted = true;\n callHook(vm, 'mounted');\n }\n return vm\n}\n\nfunction updateChildComponent (\n vm,\n propsData,\n listeners,\n parentVnode,\n renderChildren\n) {\n if (process.env.NODE_ENV !== 'production') {\n isUpdatingChildComponent = true;\n }\n\n // determine whether component has slot children\n // we need to do this before overwriting $options._renderChildren.\n\n // check if there are dynamic scopedSlots (hand-written or compiled but with\n // dynamic slot names). Static scoped slots compiled from template has the\n // \"$stable\" marker.\n var newScopedSlots = parentVnode.data.scopedSlots;\n var oldScopedSlots = vm.$scopedSlots;\n var hasDynamicScopedSlot = !!(\n (newScopedSlots && !newScopedSlots.$stable) ||\n (oldScopedSlots !== emptyObject && !oldScopedSlots.$stable) ||\n (newScopedSlots && vm.$scopedSlots.$key !== newScopedSlots.$key) ||\n (!newScopedSlots && vm.$scopedSlots.$key)\n );\n\n // Any static slot children from the parent may have changed during parent's\n // update. Dynamic scoped slots may also have changed. In such cases, a forced\n // update is necessary to ensure correctness.\n var needsForceUpdate = !!(\n renderChildren || // has new static slots\n vm.$options._renderChildren || // has old static slots\n hasDynamicScopedSlot\n );\n\n vm.$options._parentVnode = parentVnode;\n vm.$vnode = parentVnode; // update vm's placeholder node without re-render\n\n if (vm._vnode) { // update child tree's parent\n vm._vnode.parent = parentVnode;\n }\n vm.$options._renderChildren = renderChildren;\n\n // update $attrs and $listeners hash\n // these are also reactive so they may trigger child update if the child\n // used them during render\n vm.$attrs = parentVnode.data.attrs || emptyObject;\n vm.$listeners = listeners || emptyObject;\n\n // update props\n if (propsData && vm.$options.props) {\n toggleObserving(false);\n var props = vm._props;\n var propKeys = vm.$options._propKeys || [];\n for (var i = 0; i < propKeys.length; i++) {\n var key = propKeys[i];\n var propOptions = vm.$options.props; // wtf flow?\n props[key] = validateProp(key, propOptions, propsData, vm);\n }\n toggleObserving(true);\n // keep a copy of raw propsData\n vm.$options.propsData = propsData;\n }\n\n // update listeners\n listeners = listeners || emptyObject;\n var oldListeners = vm.$options._parentListeners;\n vm.$options._parentListeners = listeners;\n updateComponentListeners(vm, listeners, oldListeners);\n\n // resolve slots + force update if has children\n if (needsForceUpdate) {\n vm.$slots = resolveSlots(renderChildren, parentVnode.context);\n vm.$forceUpdate();\n }\n\n if (process.env.NODE_ENV !== 'production') {\n isUpdatingChildComponent = false;\n }\n}\n\nfunction isInInactiveTree (vm) {\n while (vm && (vm = vm.$parent)) {\n if (vm._inactive) { return true }\n }\n return false\n}\n\nfunction activateChildComponent (vm, direct) {\n if (direct) {\n vm._directInactive = false;\n if (isInInactiveTree(vm)) {\n return\n }\n } else if (vm._directInactive) {\n return\n }\n if (vm._inactive || vm._inactive === null) {\n vm._inactive = false;\n for (var i = 0; i < vm.$children.length; i++) {\n activateChildComponent(vm.$children[i]);\n }\n callHook(vm, 'activated');\n }\n}\n\nfunction deactivateChildComponent (vm, direct) {\n if (direct) {\n vm._directInactive = true;\n if (isInInactiveTree(vm)) {\n return\n }\n }\n if (!vm._inactive) {\n vm._inactive = true;\n for (var i = 0; i < vm.$children.length; i++) {\n deactivateChildComponent(vm.$children[i]);\n }\n callHook(vm, 'deactivated');\n }\n}\n\nfunction callHook (vm, hook) {\n // #7573 disable dep collection when invoking lifecycle hooks\n pushTarget();\n var handlers = vm.$options[hook];\n var info = hook + \" hook\";\n if (handlers) {\n for (var i = 0, j = handlers.length; i < j; i++) {\n invokeWithErrorHandling(handlers[i], vm, null, vm, info);\n }\n }\n if (vm._hasHookEvent) {\n vm.$emit('hook:' + hook);\n }\n popTarget();\n}\n\n/* */\n\nvar MAX_UPDATE_COUNT = 100;\n\nvar queue = [];\nvar activatedChildren = [];\nvar has = {};\nvar circular = {};\nvar waiting = false;\nvar flushing = false;\nvar index = 0;\n\n/**\n * Reset the scheduler's state.\n */\nfunction resetSchedulerState () {\n index = queue.length = activatedChildren.length = 0;\n has = {};\n if (process.env.NODE_ENV !== 'production') {\n circular = {};\n }\n waiting = flushing = false;\n}\n\n// Async edge case #6566 requires saving the timestamp when event listeners are\n// attached. However, calling performance.now() has a perf overhead especially\n// if the page has thousands of event listeners. Instead, we take a timestamp\n// every time the scheduler flushes and use that for all event listeners\n// attached during that flush.\nvar currentFlushTimestamp = 0;\n\n// Async edge case fix requires storing an event listener's attach timestamp.\nvar getNow = Date.now;\n\n// Determine what event timestamp the browser is using. Annoyingly, the\n// timestamp can either be hi-res (relative to page load) or low-res\n// (relative to UNIX epoch), so in order to compare time we have to use the\n// same timestamp type when saving the flush timestamp.\n// All IE versions use low-res event timestamps, and have problematic clock\n// implementations (#9632)\nif (inBrowser && !isIE) {\n var performance = window.performance;\n if (\n performance &&\n typeof performance.now === 'function' &&\n getNow() > document.createEvent('Event').timeStamp\n ) {\n // if the event timestamp, although evaluated AFTER the Date.now(), is\n // smaller than it, it means the event is using a hi-res timestamp,\n // and we need to use the hi-res version for event listener timestamps as\n // well.\n getNow = function () { return performance.now(); };\n }\n}\n\n/**\n * Flush both queues and run the watchers.\n */\nfunction flushSchedulerQueue () {\n currentFlushTimestamp = getNow();\n flushing = true;\n var watcher, id;\n\n // Sort queue before flush.\n // This ensures that:\n // 1. Components are updated from parent to child. (because parent is always\n // created before the child)\n // 2. A component's user watchers are run before its render watcher (because\n // user watchers are created before the render watcher)\n // 3. If a component is destroyed during a parent component's watcher run,\n // its watchers can be skipped.\n queue.sort(function (a, b) { return a.id - b.id; });\n\n // do not cache length because more watchers might be pushed\n // as we run existing watchers\n for (index = 0; index < queue.length; index++) {\n watcher = queue[index];\n if (watcher.before) {\n watcher.before();\n }\n id = watcher.id;\n has[id] = null;\n watcher.run();\n // in dev build, check and stop circular updates.\n if (process.env.NODE_ENV !== 'production' && has[id] != null) {\n circular[id] = (circular[id] || 0) + 1;\n if (circular[id] > MAX_UPDATE_COUNT) {\n warn(\n 'You may have an infinite update loop ' + (\n watcher.user\n ? (\"in watcher with expression \\\"\" + (watcher.expression) + \"\\\"\")\n : \"in a component render function.\"\n ),\n watcher.vm\n );\n break\n }\n }\n }\n\n // keep copies of post queues before resetting state\n var activatedQueue = activatedChildren.slice();\n var updatedQueue = queue.slice();\n\n resetSchedulerState();\n\n // call component updated and activated hooks\n callActivatedHooks(activatedQueue);\n callUpdatedHooks(updatedQueue);\n\n // devtool hook\n /* istanbul ignore if */\n if (devtools && config.devtools) {\n devtools.emit('flush');\n }\n}\n\nfunction callUpdatedHooks (queue) {\n var i = queue.length;\n while (i--) {\n var watcher = queue[i];\n var vm = watcher.vm;\n if (vm._watcher === watcher && vm._isMounted && !vm._isDestroyed) {\n callHook(vm, 'updated');\n }\n }\n}\n\n/**\n * Queue a kept-alive component that was activated during patch.\n * The queue will be processed after the entire tree has been patched.\n */\nfunction queueActivatedComponent (vm) {\n // setting _inactive to false here so that a render function can\n // rely on checking whether it's in an inactive tree (e.g. router-view)\n vm._inactive = false;\n activatedChildren.push(vm);\n}\n\nfunction callActivatedHooks (queue) {\n for (var i = 0; i < queue.length; i++) {\n queue[i]._inactive = true;\n activateChildComponent(queue[i], true /* true */);\n }\n}\n\n/**\n * Push a watcher into the watcher queue.\n * Jobs with duplicate IDs will be skipped unless it's\n * pushed when the queue is being flushed.\n */\nfunction queueWatcher (watcher) {\n var id = watcher.id;\n if (has[id] == null) {\n has[id] = true;\n if (!flushing) {\n queue.push(watcher);\n } else {\n // if already flushing, splice the watcher based on its id\n // if already past its id, it will be run next immediately.\n var i = queue.length - 1;\n while (i > index && queue[i].id > watcher.id) {\n i--;\n }\n queue.splice(i + 1, 0, watcher);\n }\n // queue the flush\n if (!waiting) {\n waiting = true;\n\n if (process.env.NODE_ENV !== 'production' && !config.async) {\n flushSchedulerQueue();\n return\n }\n nextTick(flushSchedulerQueue);\n }\n }\n}\n\n/* */\n\n\n\nvar uid$2 = 0;\n\n/**\n * A watcher parses an expression, collects dependencies,\n * and fires callback when the expression value changes.\n * This is used for both the $watch() api and directives.\n */\nvar Watcher = function Watcher (\n vm,\n expOrFn,\n cb,\n options,\n isRenderWatcher\n) {\n this.vm = vm;\n if (isRenderWatcher) {\n vm._watcher = this;\n }\n vm._watchers.push(this);\n // options\n if (options) {\n this.deep = !!options.deep;\n this.user = !!options.user;\n this.lazy = !!options.lazy;\n this.sync = !!options.sync;\n this.before = options.before;\n } else {\n this.deep = this.user = this.lazy = this.sync = false;\n }\n this.cb = cb;\n this.id = ++uid$2; // uid for batching\n this.active = true;\n this.dirty = this.lazy; // for lazy watchers\n this.deps = [];\n this.newDeps = [];\n this.depIds = new _Set();\n this.newDepIds = new _Set();\n this.expression = process.env.NODE_ENV !== 'production'\n ? expOrFn.toString()\n : '';\n // parse expression for getter\n if (typeof expOrFn === 'function') {\n this.getter = expOrFn;\n } else {\n this.getter = parsePath(expOrFn);\n if (!this.getter) {\n this.getter = noop;\n process.env.NODE_ENV !== 'production' && warn(\n \"Failed watching path: \\\"\" + expOrFn + \"\\\" \" +\n 'Watcher only accepts simple dot-delimited paths. ' +\n 'For full control, use a function instead.',\n vm\n );\n }\n }\n this.value = this.lazy\n ? undefined\n : this.get();\n};\n\n/**\n * Evaluate the getter, and re-collect dependencies.\n */\nWatcher.prototype.get = function get () {\n pushTarget(this);\n var value;\n var vm = this.vm;\n try {\n value = this.getter.call(vm, vm);\n } catch (e) {\n if (this.user) {\n handleError(e, vm, (\"getter for watcher \\\"\" + (this.expression) + \"\\\"\"));\n } else {\n throw e\n }\n } finally {\n // \"touch\" every property so they are all tracked as\n // dependencies for deep watching\n if (this.deep) {\n traverse(value);\n }\n popTarget();\n this.cleanupDeps();\n }\n return value\n};\n\n/**\n * Add a dependency to this directive.\n */\nWatcher.prototype.addDep = function addDep (dep) {\n var id = dep.id;\n if (!this.newDepIds.has(id)) {\n this.newDepIds.add(id);\n this.newDeps.push(dep);\n if (!this.depIds.has(id)) {\n dep.addSub(this);\n }\n }\n};\n\n/**\n * Clean up for dependency collection.\n */\nWatcher.prototype.cleanupDeps = function cleanupDeps () {\n var i = this.deps.length;\n while (i--) {\n var dep = this.deps[i];\n if (!this.newDepIds.has(dep.id)) {\n dep.removeSub(this);\n }\n }\n var tmp = this.depIds;\n this.depIds = this.newDepIds;\n this.newDepIds = tmp;\n this.newDepIds.clear();\n tmp = this.deps;\n this.deps = this.newDeps;\n this.newDeps = tmp;\n this.newDeps.length = 0;\n};\n\n/**\n * Subscriber interface.\n * Will be called when a dependency changes.\n */\nWatcher.prototype.update = function update () {\n /* istanbul ignore else */\n if (this.lazy) {\n this.dirty = true;\n } else if (this.sync) {\n this.run();\n } else {\n queueWatcher(this);\n }\n};\n\n/**\n * Scheduler job interface.\n * Will be called by the scheduler.\n */\nWatcher.prototype.run = function run () {\n if (this.active) {\n var value = this.get();\n if (\n value !== this.value ||\n // Deep watchers and watchers on Object/Arrays should fire even\n // when the value is the same, because the value may\n // have mutated.\n isObject(value) ||\n this.deep\n ) {\n // set new value\n var oldValue = this.value;\n this.value = value;\n if (this.user) {\n var info = \"callback for watcher \\\"\" + (this.expression) + \"\\\"\";\n invokeWithErrorHandling(this.cb, this.vm, [value, oldValue], this.vm, info);\n } else {\n this.cb.call(this.vm, value, oldValue);\n }\n }\n }\n};\n\n/**\n * Evaluate the value of the watcher.\n * This only gets called for lazy watchers.\n */\nWatcher.prototype.evaluate = function evaluate () {\n this.value = this.get();\n this.dirty = false;\n};\n\n/**\n * Depend on all deps collected by this watcher.\n */\nWatcher.prototype.depend = function depend () {\n var i = this.deps.length;\n while (i--) {\n this.deps[i].depend();\n }\n};\n\n/**\n * Remove self from all dependencies' subscriber list.\n */\nWatcher.prototype.teardown = function teardown () {\n if (this.active) {\n // remove self from vm's watcher list\n // this is a somewhat expensive operation so we skip it\n // if the vm is being destroyed.\n if (!this.vm._isBeingDestroyed) {\n remove(this.vm._watchers, this);\n }\n var i = this.deps.length;\n while (i--) {\n this.deps[i].removeSub(this);\n }\n this.active = false;\n }\n};\n\n/* */\n\nvar sharedPropertyDefinition = {\n enumerable: true,\n configurable: true,\n get: noop,\n set: noop\n};\n\nfunction proxy (target, sourceKey, key) {\n sharedPropertyDefinition.get = function proxyGetter () {\n return this[sourceKey][key]\n };\n sharedPropertyDefinition.set = function proxySetter (val) {\n this[sourceKey][key] = val;\n };\n Object.defineProperty(target, key, sharedPropertyDefinition);\n}\n\nfunction initState (vm) {\n vm._watchers = [];\n var opts = vm.$options;\n if (opts.props) { initProps(vm, opts.props); }\n if (opts.methods) { initMethods(vm, opts.methods); }\n if (opts.data) {\n initData(vm);\n } else {\n observe(vm._data = {}, true /* asRootData */);\n }\n if (opts.computed) { initComputed(vm, opts.computed); }\n if (opts.watch && opts.watch !== nativeWatch) {\n initWatch(vm, opts.watch);\n }\n}\n\nfunction initProps (vm, propsOptions) {\n var propsData = vm.$options.propsData || {};\n var props = vm._props = {};\n // cache prop keys so that future props updates can iterate using Array\n // instead of dynamic object key enumeration.\n var keys = vm.$options._propKeys = [];\n var isRoot = !vm.$parent;\n // root instance props should be converted\n if (!isRoot) {\n toggleObserving(false);\n }\n var loop = function ( key ) {\n keys.push(key);\n var value = validateProp(key, propsOptions, propsData, vm);\n /* istanbul ignore else */\n if (process.env.NODE_ENV !== 'production') {\n var hyphenatedKey = hyphenate(key);\n if (isReservedAttribute(hyphenatedKey) ||\n config.isReservedAttr(hyphenatedKey)) {\n warn(\n (\"\\\"\" + hyphenatedKey + \"\\\" is a reserved attribute and cannot be used as component prop.\"),\n vm\n );\n }\n defineReactive$$1(props, key, value, function () {\n if (!isRoot && !isUpdatingChildComponent) {\n warn(\n \"Avoid mutating a prop directly since the value will be \" +\n \"overwritten whenever the parent component re-renders. \" +\n \"Instead, use a data or computed property based on the prop's \" +\n \"value. Prop being mutated: \\\"\" + key + \"\\\"\",\n vm\n );\n }\n });\n } else {\n defineReactive$$1(props, key, value);\n }\n // static props are already proxied on the component's prototype\n // during Vue.extend(). We only need to proxy props defined at\n // instantiation here.\n if (!(key in vm)) {\n proxy(vm, \"_props\", key);\n }\n };\n\n for (var key in propsOptions) loop( key );\n toggleObserving(true);\n}\n\nfunction initData (vm) {\n var data = vm.$options.data;\n data = vm._data = typeof data === 'function'\n ? getData(data, vm)\n : data || {};\n if (!isPlainObject(data)) {\n data = {};\n process.env.NODE_ENV !== 'production' && warn(\n 'data functions should return an object:\\n' +\n 'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function',\n vm\n );\n }\n // proxy data on instance\n var keys = Object.keys(data);\n var props = vm.$options.props;\n var methods = vm.$options.methods;\n var i = keys.length;\n while (i--) {\n var key = keys[i];\n if (process.env.NODE_ENV !== 'production') {\n if (methods && hasOwn(methods, key)) {\n warn(\n (\"Method \\\"\" + key + \"\\\" has already been defined as a data property.\"),\n vm\n );\n }\n }\n if (props && hasOwn(props, key)) {\n process.env.NODE_ENV !== 'production' && warn(\n \"The data property \\\"\" + key + \"\\\" is already declared as a prop. \" +\n \"Use prop default value instead.\",\n vm\n );\n } else if (!isReserved(key)) {\n proxy(vm, \"_data\", key);\n }\n }\n // observe data\n observe(data, true /* asRootData */);\n}\n\nfunction getData (data, vm) {\n // #7573 disable dep collection when invoking data getters\n pushTarget();\n try {\n return data.call(vm, vm)\n } catch (e) {\n handleError(e, vm, \"data()\");\n return {}\n } finally {\n popTarget();\n }\n}\n\nvar computedWatcherOptions = { lazy: true };\n\nfunction initComputed (vm, computed) {\n // $flow-disable-line\n var watchers = vm._computedWatchers = Object.create(null);\n // computed properties are just getters during SSR\n var isSSR = isServerRendering();\n\n for (var key in computed) {\n var userDef = computed[key];\n var getter = typeof userDef === 'function' ? userDef : userDef.get;\n if (process.env.NODE_ENV !== 'production' && getter == null) {\n warn(\n (\"Getter is missing for computed property \\\"\" + key + \"\\\".\"),\n vm\n );\n }\n\n if (!isSSR) {\n // create internal watcher for the computed property.\n watchers[key] = new Watcher(\n vm,\n getter || noop,\n noop,\n computedWatcherOptions\n );\n }\n\n // component-defined computed properties are already defined on the\n // component prototype. We only need to define computed properties defined\n // at instantiation here.\n if (!(key in vm)) {\n defineComputed(vm, key, userDef);\n } else if (process.env.NODE_ENV !== 'production') {\n if (key in vm.$data) {\n warn((\"The computed property \\\"\" + key + \"\\\" is already defined in data.\"), vm);\n } else if (vm.$options.props && key in vm.$options.props) {\n warn((\"The computed property \\\"\" + key + \"\\\" is already defined as a prop.\"), vm);\n } else if (vm.$options.methods && key in vm.$options.methods) {\n warn((\"The computed property \\\"\" + key + \"\\\" is already defined as a method.\"), vm);\n }\n }\n }\n}\n\nfunction defineComputed (\n target,\n key,\n userDef\n) {\n var shouldCache = !isServerRendering();\n if (typeof userDef === 'function') {\n sharedPropertyDefinition.get = shouldCache\n ? createComputedGetter(key)\n : createGetterInvoker(userDef);\n sharedPropertyDefinition.set = noop;\n } else {\n sharedPropertyDefinition.get = userDef.get\n ? shouldCache && userDef.cache !== false\n ? createComputedGetter(key)\n : createGetterInvoker(userDef.get)\n : noop;\n sharedPropertyDefinition.set = userDef.set || noop;\n }\n if (process.env.NODE_ENV !== 'production' &&\n sharedPropertyDefinition.set === noop) {\n sharedPropertyDefinition.set = function () {\n warn(\n (\"Computed property \\\"\" + key + \"\\\" was assigned to but it has no setter.\"),\n this\n );\n };\n }\n Object.defineProperty(target, key, sharedPropertyDefinition);\n}\n\nfunction createComputedGetter (key) {\n return function computedGetter () {\n var watcher = this._computedWatchers && this._computedWatchers[key];\n if (watcher) {\n if (watcher.dirty) {\n watcher.evaluate();\n }\n if (Dep.target) {\n watcher.depend();\n }\n return watcher.value\n }\n }\n}\n\nfunction createGetterInvoker(fn) {\n return function computedGetter () {\n return fn.call(this, this)\n }\n}\n\nfunction initMethods (vm, methods) {\n var props = vm.$options.props;\n for (var key in methods) {\n if (process.env.NODE_ENV !== 'production') {\n if (typeof methods[key] !== 'function') {\n warn(\n \"Method \\\"\" + key + \"\\\" has type \\\"\" + (typeof methods[key]) + \"\\\" in the component definition. \" +\n \"Did you reference the function correctly?\",\n vm\n );\n }\n if (props && hasOwn(props, key)) {\n warn(\n (\"Method \\\"\" + key + \"\\\" has already been defined as a prop.\"),\n vm\n );\n }\n if ((key in vm) && isReserved(key)) {\n warn(\n \"Method \\\"\" + key + \"\\\" conflicts with an existing Vue instance method. \" +\n \"Avoid defining component methods that start with _ or $.\"\n );\n }\n }\n vm[key] = typeof methods[key] !== 'function' ? noop : bind(methods[key], vm);\n }\n}\n\nfunction initWatch (vm, watch) {\n for (var key in watch) {\n var handler = watch[key];\n if (Array.isArray(handler)) {\n for (var i = 0; i < handler.length; i++) {\n createWatcher(vm, key, handler[i]);\n }\n } else {\n createWatcher(vm, key, handler);\n }\n }\n}\n\nfunction createWatcher (\n vm,\n expOrFn,\n handler,\n options\n) {\n if (isPlainObject(handler)) {\n options = handler;\n handler = handler.handler;\n }\n if (typeof handler === 'string') {\n handler = vm[handler];\n }\n return vm.$watch(expOrFn, handler, options)\n}\n\nfunction stateMixin (Vue) {\n // flow somehow has problems with directly declared definition object\n // when using Object.defineProperty, so we have to procedurally build up\n // the object here.\n var dataDef = {};\n dataDef.get = function () { return this._data };\n var propsDef = {};\n propsDef.get = function () { return this._props };\n if (process.env.NODE_ENV !== 'production') {\n dataDef.set = function () {\n warn(\n 'Avoid replacing instance root $data. ' +\n 'Use nested data properties instead.',\n this\n );\n };\n propsDef.set = function () {\n warn(\"$props is readonly.\", this);\n };\n }\n Object.defineProperty(Vue.prototype, '$data', dataDef);\n Object.defineProperty(Vue.prototype, '$props', propsDef);\n\n Vue.prototype.$set = set;\n Vue.prototype.$delete = del;\n\n Vue.prototype.$watch = function (\n expOrFn,\n cb,\n options\n ) {\n var vm = this;\n if (isPlainObject(cb)) {\n return createWatcher(vm, expOrFn, cb, options)\n }\n options = options || {};\n options.user = true;\n var watcher = new Watcher(vm, expOrFn, cb, options);\n if (options.immediate) {\n var info = \"callback for immediate watcher \\\"\" + (watcher.expression) + \"\\\"\";\n pushTarget();\n invokeWithErrorHandling(cb, vm, [watcher.value], vm, info);\n popTarget();\n }\n return function unwatchFn () {\n watcher.teardown();\n }\n };\n}\n\n/* */\n\nvar uid$3 = 0;\n\nfunction initMixin (Vue) {\n Vue.prototype._init = function (options) {\n var vm = this;\n // a uid\n vm._uid = uid$3++;\n\n var startTag, endTag;\n /* istanbul ignore if */\n if (process.env.NODE_ENV !== 'production' && config.performance && mark) {\n startTag = \"vue-perf-start:\" + (vm._uid);\n endTag = \"vue-perf-end:\" + (vm._uid);\n mark(startTag);\n }\n\n // a flag to avoid this being observed\n vm._isVue = true;\n // merge options\n if (options && options._isComponent) {\n // optimize internal component instantiation\n // since dynamic options merging is pretty slow, and none of the\n // internal component options needs special treatment.\n initInternalComponent(vm, options);\n } else {\n vm.$options = mergeOptions(\n resolveConstructorOptions(vm.constructor),\n options || {},\n vm\n );\n }\n /* istanbul ignore else */\n if (process.env.NODE_ENV !== 'production') {\n initProxy(vm);\n } else {\n vm._renderProxy = vm;\n }\n // expose real self\n vm._self = vm;\n initLifecycle(vm);\n initEvents(vm);\n initRender(vm);\n callHook(vm, 'beforeCreate');\n initInjections(vm); // resolve injections before data/props\n initState(vm);\n initProvide(vm); // resolve provide after data/props\n callHook(vm, 'created');\n\n /* istanbul ignore if */\n if (process.env.NODE_ENV !== 'production' && config.performance && mark) {\n vm._name = formatComponentName(vm, false);\n mark(endTag);\n measure((\"vue \" + (vm._name) + \" init\"), startTag, endTag);\n }\n\n if (vm.$options.el) {\n vm.$mount(vm.$options.el);\n }\n };\n}\n\nfunction initInternalComponent (vm, options) {\n var opts = vm.$options = Object.create(vm.constructor.options);\n // doing this because it's faster than dynamic enumeration.\n var parentVnode = options._parentVnode;\n opts.parent = options.parent;\n opts._parentVnode = parentVnode;\n\n var vnodeComponentOptions = parentVnode.componentOptions;\n opts.propsData = vnodeComponentOptions.propsData;\n opts._parentListeners = vnodeComponentOptions.listeners;\n opts._renderChildren = vnodeComponentOptions.children;\n opts._componentTag = vnodeComponentOptions.tag;\n\n if (options.render) {\n opts.render = options.render;\n opts.staticRenderFns = options.staticRenderFns;\n }\n}\n\nfunction resolveConstructorOptions (Ctor) {\n var options = Ctor.options;\n if (Ctor.super) {\n var superOptions = resolveConstructorOptions(Ctor.super);\n var cachedSuperOptions = Ctor.superOptions;\n if (superOptions !== cachedSuperOptions) {\n // super option changed,\n // need to resolve new options.\n Ctor.superOptions = superOptions;\n // check if there are any late-modified/attached options (#4976)\n var modifiedOptions = resolveModifiedOptions(Ctor);\n // update base extend options\n if (modifiedOptions) {\n extend(Ctor.extendOptions, modifiedOptions);\n }\n options = Ctor.options = mergeOptions(superOptions, Ctor.extendOptions);\n if (options.name) {\n options.components[options.name] = Ctor;\n }\n }\n }\n return options\n}\n\nfunction resolveModifiedOptions (Ctor) {\n var modified;\n var latest = Ctor.options;\n var sealed = Ctor.sealedOptions;\n for (var key in latest) {\n if (latest[key] !== sealed[key]) {\n if (!modified) { modified = {}; }\n modified[key] = latest[key];\n }\n }\n return modified\n}\n\nfunction Vue (options) {\n if (process.env.NODE_ENV !== 'production' &&\n !(this instanceof Vue)\n ) {\n warn('Vue is a constructor and should be called with the `new` keyword');\n }\n this._init(options);\n}\n\ninitMixin(Vue);\nstateMixin(Vue);\neventsMixin(Vue);\nlifecycleMixin(Vue);\nrenderMixin(Vue);\n\n/* */\n\nfunction initUse (Vue) {\n Vue.use = function (plugin) {\n var installedPlugins = (this._installedPlugins || (this._installedPlugins = []));\n if (installedPlugins.indexOf(plugin) > -1) {\n return this\n }\n\n // additional parameters\n var args = toArray(arguments, 1);\n args.unshift(this);\n if (typeof plugin.install === 'function') {\n plugin.install.apply(plugin, args);\n } else if (typeof plugin === 'function') {\n plugin.apply(null, args);\n }\n installedPlugins.push(plugin);\n return this\n };\n}\n\n/* */\n\nfunction initMixin$1 (Vue) {\n Vue.mixin = function (mixin) {\n this.options = mergeOptions(this.options, mixin);\n return this\n };\n}\n\n/* */\n\nfunction initExtend (Vue) {\n /**\n * Each instance constructor, including Vue, has a unique\n * cid. This enables us to create wrapped \"child\n * constructors\" for prototypal inheritance and cache them.\n */\n Vue.cid = 0;\n var cid = 1;\n\n /**\n * Class inheritance\n */\n Vue.extend = function (extendOptions) {\n extendOptions = extendOptions || {};\n var Super = this;\n var SuperId = Super.cid;\n var cachedCtors = extendOptions._Ctor || (extendOptions._Ctor = {});\n if (cachedCtors[SuperId]) {\n return cachedCtors[SuperId]\n }\n\n var name = extendOptions.name || Super.options.name;\n if (process.env.NODE_ENV !== 'production' && name) {\n validateComponentName(name);\n }\n\n var Sub = function VueComponent (options) {\n this._init(options);\n };\n Sub.prototype = Object.create(Super.prototype);\n Sub.prototype.constructor = Sub;\n Sub.cid = cid++;\n Sub.options = mergeOptions(\n Super.options,\n extendOptions\n );\n Sub['super'] = Super;\n\n // For props and computed properties, we define the proxy getters on\n // the Vue instances at extension time, on the extended prototype. This\n // avoids Object.defineProperty calls for each instance created.\n if (Sub.options.props) {\n initProps$1(Sub);\n }\n if (Sub.options.computed) {\n initComputed$1(Sub);\n }\n\n // allow further extension/mixin/plugin usage\n Sub.extend = Super.extend;\n Sub.mixin = Super.mixin;\n Sub.use = Super.use;\n\n // create asset registers, so extended classes\n // can have their private assets too.\n ASSET_TYPES.forEach(function (type) {\n Sub[type] = Super[type];\n });\n // enable recursive self-lookup\n if (name) {\n Sub.options.components[name] = Sub;\n }\n\n // keep a reference to the super options at extension time.\n // later at instantiation we can check if Super's options have\n // been updated.\n Sub.superOptions = Super.options;\n Sub.extendOptions = extendOptions;\n Sub.sealedOptions = extend({}, Sub.options);\n\n // cache constructor\n cachedCtors[SuperId] = Sub;\n return Sub\n };\n}\n\nfunction initProps$1 (Comp) {\n var props = Comp.options.props;\n for (var key in props) {\n proxy(Comp.prototype, \"_props\", key);\n }\n}\n\nfunction initComputed$1 (Comp) {\n var computed = Comp.options.computed;\n for (var key in computed) {\n defineComputed(Comp.prototype, key, computed[key]);\n }\n}\n\n/* */\n\nfunction initAssetRegisters (Vue) {\n /**\n * Create asset registration methods.\n */\n ASSET_TYPES.forEach(function (type) {\n Vue[type] = function (\n id,\n definition\n ) {\n if (!definition) {\n return this.options[type + 's'][id]\n } else {\n /* istanbul ignore if */\n if (process.env.NODE_ENV !== 'production' && type === 'component') {\n validateComponentName(id);\n }\n if (type === 'component' && isPlainObject(definition)) {\n definition.name = definition.name || id;\n definition = this.options._base.extend(definition);\n }\n if (type === 'directive' && typeof definition === 'function') {\n definition = { bind: definition, update: definition };\n }\n this.options[type + 's'][id] = definition;\n return definition\n }\n };\n });\n}\n\n/* */\n\n\n\n\n\nfunction getComponentName (opts) {\n return opts && (opts.Ctor.options.name || opts.tag)\n}\n\nfunction matches (pattern, name) {\n if (Array.isArray(pattern)) {\n return pattern.indexOf(name) > -1\n } else if (typeof pattern === 'string') {\n return pattern.split(',').indexOf(name) > -1\n } else if (isRegExp(pattern)) {\n return pattern.test(name)\n }\n /* istanbul ignore next */\n return false\n}\n\nfunction pruneCache (keepAliveInstance, filter) {\n var cache = keepAliveInstance.cache;\n var keys = keepAliveInstance.keys;\n var _vnode = keepAliveInstance._vnode;\n for (var key in cache) {\n var entry = cache[key];\n if (entry) {\n var name = entry.name;\n if (name && !filter(name)) {\n pruneCacheEntry(cache, key, keys, _vnode);\n }\n }\n }\n}\n\nfunction pruneCacheEntry (\n cache,\n key,\n keys,\n current\n) {\n var entry = cache[key];\n if (entry && (!current || entry.tag !== current.tag)) {\n entry.componentInstance.$destroy();\n }\n cache[key] = null;\n remove(keys, key);\n}\n\nvar patternTypes = [String, RegExp, Array];\n\nvar KeepAlive = {\n name: 'keep-alive',\n abstract: true,\n\n props: {\n include: patternTypes,\n exclude: patternTypes,\n max: [String, Number]\n },\n\n methods: {\n cacheVNode: function cacheVNode() {\n var ref = this;\n var cache = ref.cache;\n var keys = ref.keys;\n var vnodeToCache = ref.vnodeToCache;\n var keyToCache = ref.keyToCache;\n if (vnodeToCache) {\n var tag = vnodeToCache.tag;\n var componentInstance = vnodeToCache.componentInstance;\n var componentOptions = vnodeToCache.componentOptions;\n cache[keyToCache] = {\n name: getComponentName(componentOptions),\n tag: tag,\n componentInstance: componentInstance,\n };\n keys.push(keyToCache);\n // prune oldest entry\n if (this.max && keys.length > parseInt(this.max)) {\n pruneCacheEntry(cache, keys[0], keys, this._vnode);\n }\n this.vnodeToCache = null;\n }\n }\n },\n\n created: function created () {\n this.cache = Object.create(null);\n this.keys = [];\n },\n\n destroyed: function destroyed () {\n for (var key in this.cache) {\n pruneCacheEntry(this.cache, key, this.keys);\n }\n },\n\n mounted: function mounted () {\n var this$1 = this;\n\n this.cacheVNode();\n this.$watch('include', function (val) {\n pruneCache(this$1, function (name) { return matches(val, name); });\n });\n this.$watch('exclude', function (val) {\n pruneCache(this$1, function (name) { return !matches(val, name); });\n });\n },\n\n updated: function updated () {\n this.cacheVNode();\n },\n\n render: function render () {\n var slot = this.$slots.default;\n var vnode = getFirstComponentChild(slot);\n var componentOptions = vnode && vnode.componentOptions;\n if (componentOptions) {\n // check pattern\n var name = getComponentName(componentOptions);\n var ref = this;\n var include = ref.include;\n var exclude = ref.exclude;\n if (\n // not included\n (include && (!name || !matches(include, name))) ||\n // excluded\n (exclude && name && matches(exclude, name))\n ) {\n return vnode\n }\n\n var ref$1 = this;\n var cache = ref$1.cache;\n var keys = ref$1.keys;\n var key = vnode.key == null\n // same constructor may get registered as different local components\n // so cid alone is not enough (#3269)\n ? componentOptions.Ctor.cid + (componentOptions.tag ? (\"::\" + (componentOptions.tag)) : '')\n : vnode.key;\n if (cache[key]) {\n vnode.componentInstance = cache[key].componentInstance;\n // make current key freshest\n remove(keys, key);\n keys.push(key);\n } else {\n // delay setting the cache until update\n this.vnodeToCache = vnode;\n this.keyToCache = key;\n }\n\n vnode.data.keepAlive = true;\n }\n return vnode || (slot && slot[0])\n }\n};\n\nvar builtInComponents = {\n KeepAlive: KeepAlive\n};\n\n/* */\n\nfunction initGlobalAPI (Vue) {\n // config\n var configDef = {};\n configDef.get = function () { return config; };\n if (process.env.NODE_ENV !== 'production') {\n configDef.set = function () {\n warn(\n 'Do not replace the Vue.config object, set individual fields instead.'\n );\n };\n }\n Object.defineProperty(Vue, 'config', configDef);\n\n // exposed util methods.\n // NOTE: these are not considered part of the public API - avoid relying on\n // them unless you are aware of the risk.\n Vue.util = {\n warn: warn,\n extend: extend,\n mergeOptions: mergeOptions,\n defineReactive: defineReactive$$1\n };\n\n Vue.set = set;\n Vue.delete = del;\n Vue.nextTick = nextTick;\n\n // 2.6 explicit observable API\n Vue.observable = function (obj) {\n observe(obj);\n return obj\n };\n\n Vue.options = Object.create(null);\n ASSET_TYPES.forEach(function (type) {\n Vue.options[type + 's'] = Object.create(null);\n });\n\n // this is used to identify the \"base\" constructor to extend all plain-object\n // components with in Weex's multi-instance scenarios.\n Vue.options._base = Vue;\n\n extend(Vue.options.components, builtInComponents);\n\n initUse(Vue);\n initMixin$1(Vue);\n initExtend(Vue);\n initAssetRegisters(Vue);\n}\n\ninitGlobalAPI(Vue);\n\nObject.defineProperty(Vue.prototype, '$isServer', {\n get: isServerRendering\n});\n\nObject.defineProperty(Vue.prototype, '$ssrContext', {\n get: function get () {\n /* istanbul ignore next */\n return this.$vnode && this.$vnode.ssrContext\n }\n});\n\n// expose FunctionalRenderContext for ssr runtime helper installation\nObject.defineProperty(Vue, 'FunctionalRenderContext', {\n value: FunctionalRenderContext\n});\n\nVue.version = '2.6.14';\n\n/* */\n\n// these are reserved for web because they are directly compiled away\n// during template compilation\nvar isReservedAttr = makeMap('style,class');\n\n// attributes that should be using props for binding\nvar acceptValue = makeMap('input,textarea,option,select,progress');\nvar mustUseProp = function (tag, type, attr) {\n return (\n (attr === 'value' && acceptValue(tag)) && type !== 'button' ||\n (attr === 'selected' && tag === 'option') ||\n (attr === 'checked' && tag === 'input') ||\n (attr === 'muted' && tag === 'video')\n )\n};\n\nvar isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck');\n\nvar isValidContentEditableValue = makeMap('events,caret,typing,plaintext-only');\n\nvar convertEnumeratedValue = function (key, value) {\n return isFalsyAttrValue(value) || value === 'false'\n ? 'false'\n // allow arbitrary string value for contenteditable\n : key === 'contenteditable' && isValidContentEditableValue(value)\n ? value\n : 'true'\n};\n\nvar isBooleanAttr = makeMap(\n 'allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,' +\n 'default,defaultchecked,defaultmuted,defaultselected,defer,disabled,' +\n 'enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,' +\n 'muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,' +\n 'required,reversed,scoped,seamless,selected,sortable,' +\n 'truespeed,typemustmatch,visible'\n);\n\nvar xlinkNS = 'http://www.w3.org/1999/xlink';\n\nvar isXlink = function (name) {\n return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink'\n};\n\nvar getXlinkProp = function (name) {\n return isXlink(name) ? name.slice(6, name.length) : ''\n};\n\nvar isFalsyAttrValue = function (val) {\n return val == null || val === false\n};\n\n/* */\n\nfunction genClassForVnode (vnode) {\n var data = vnode.data;\n var parentNode = vnode;\n var childNode = vnode;\n while (isDef(childNode.componentInstance)) {\n childNode = childNode.componentInstance._vnode;\n if (childNode && childNode.data) {\n data = mergeClassData(childNode.data, data);\n }\n }\n while (isDef(parentNode = parentNode.parent)) {\n if (parentNode && parentNode.data) {\n data = mergeClassData(data, parentNode.data);\n }\n }\n return renderClass(data.staticClass, data.class)\n}\n\nfunction mergeClassData (child, parent) {\n return {\n staticClass: concat(child.staticClass, parent.staticClass),\n class: isDef(child.class)\n ? [child.class, parent.class]\n : parent.class\n }\n}\n\nfunction renderClass (\n staticClass,\n dynamicClass\n) {\n if (isDef(staticClass) || isDef(dynamicClass)) {\n return concat(staticClass, stringifyClass(dynamicClass))\n }\n /* istanbul ignore next */\n return ''\n}\n\nfunction concat (a, b) {\n return a ? b ? (a + ' ' + b) : a : (b || '')\n}\n\nfunction stringifyClass (value) {\n if (Array.isArray(value)) {\n return stringifyArray(value)\n }\n if (isObject(value)) {\n return stringifyObject(value)\n }\n if (typeof value === 'string') {\n return value\n }\n /* istanbul ignore next */\n return ''\n}\n\nfunction stringifyArray (value) {\n var res = '';\n var stringified;\n for (var i = 0, l = value.length; i < l; i++) {\n if (isDef(stringified = stringifyClass(value[i])) && stringified !== '') {\n if (res) { res += ' '; }\n res += stringified;\n }\n }\n return res\n}\n\nfunction stringifyObject (value) {\n var res = '';\n for (var key in value) {\n if (value[key]) {\n if (res) { res += ' '; }\n res += key;\n }\n }\n return res\n}\n\n/* */\n\nvar namespaceMap = {\n svg: 'http://www.w3.org/2000/svg',\n math: 'http://www.w3.org/1998/Math/MathML'\n};\n\nvar isHTMLTag = makeMap(\n 'html,body,base,head,link,meta,style,title,' +\n 'address,article,aside,footer,header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,' +\n 'div,dd,dl,dt,figcaption,figure,picture,hr,img,li,main,ol,p,pre,ul,' +\n 'a,b,abbr,bdi,bdo,br,cite,code,data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,' +\n 's,samp,small,span,strong,sub,sup,time,u,var,wbr,area,audio,map,track,video,' +\n 'embed,object,param,source,canvas,script,noscript,del,ins,' +\n 'caption,col,colgroup,table,thead,tbody,td,th,tr,' +\n 'button,datalist,fieldset,form,input,label,legend,meter,optgroup,option,' +\n 'output,progress,select,textarea,' +\n 'details,dialog,menu,menuitem,summary,' +\n 'content,element,shadow,template,blockquote,iframe,tfoot'\n);\n\n// this map is intentionally selective, only covering SVG elements that may\n// contain child elements.\nvar isSVG = makeMap(\n 'svg,animate,circle,clippath,cursor,defs,desc,ellipse,filter,font-face,' +\n 'foreignobject,g,glyph,image,line,marker,mask,missing-glyph,path,pattern,' +\n 'polygon,polyline,rect,switch,symbol,text,textpath,tspan,use,view',\n true\n);\n\nvar isReservedTag = function (tag) {\n return isHTMLTag(tag) || isSVG(tag)\n};\n\nfunction getTagNamespace (tag) {\n if (isSVG(tag)) {\n return 'svg'\n }\n // basic support for MathML\n // note it doesn't support other MathML elements being component roots\n if (tag === 'math') {\n return 'math'\n }\n}\n\nvar unknownElementCache = Object.create(null);\nfunction isUnknownElement (tag) {\n /* istanbul ignore if */\n if (!inBrowser) {\n return true\n }\n if (isReservedTag(tag)) {\n return false\n }\n tag = tag.toLowerCase();\n /* istanbul ignore if */\n if (unknownElementCache[tag] != null) {\n return unknownElementCache[tag]\n }\n var el = document.createElement(tag);\n if (tag.indexOf('-') > -1) {\n // http://stackoverflow.com/a/28210364/1070244\n return (unknownElementCache[tag] = (\n el.constructor === window.HTMLUnknownElement ||\n el.constructor === window.HTMLElement\n ))\n } else {\n return (unknownElementCache[tag] = /HTMLUnknownElement/.test(el.toString()))\n }\n}\n\nvar isTextInputType = makeMap('text,number,password,search,email,tel,url');\n\n/* */\n\n/**\n * Query an element selector if it's not an element already.\n */\nfunction query (el) {\n if (typeof el === 'string') {\n var selected = document.querySelector(el);\n if (!selected) {\n process.env.NODE_ENV !== 'production' && warn(\n 'Cannot find element: ' + el\n );\n return document.createElement('div')\n }\n return selected\n } else {\n return el\n }\n}\n\n/* */\n\nfunction createElement$1 (tagName, vnode) {\n var elm = document.createElement(tagName);\n if (tagName !== 'select') {\n return elm\n }\n // false or null will remove the attribute but undefined will not\n if (vnode.data && vnode.data.attrs && vnode.data.attrs.multiple !== undefined) {\n elm.setAttribute('multiple', 'multiple');\n }\n return elm\n}\n\nfunction createElementNS (namespace, tagName) {\n return document.createElementNS(namespaceMap[namespace], tagName)\n}\n\nfunction createTextNode (text) {\n return document.createTextNode(text)\n}\n\nfunction createComment (text) {\n return document.createComment(text)\n}\n\nfunction insertBefore (parentNode, newNode, referenceNode) {\n parentNode.insertBefore(newNode, referenceNode);\n}\n\nfunction removeChild (node, child) {\n node.removeChild(child);\n}\n\nfunction appendChild (node, child) {\n node.appendChild(child);\n}\n\nfunction parentNode (node) {\n return node.parentNode\n}\n\nfunction nextSibling (node) {\n return node.nextSibling\n}\n\nfunction tagName (node) {\n return node.tagName\n}\n\nfunction setTextContent (node, text) {\n node.textContent = text;\n}\n\nfunction setStyleScope (node, scopeId) {\n node.setAttribute(scopeId, '');\n}\n\nvar nodeOps = /*#__PURE__*/Object.freeze({\n createElement: createElement$1,\n createElementNS: createElementNS,\n createTextNode: createTextNode,\n createComment: createComment,\n insertBefore: insertBefore,\n removeChild: removeChild,\n appendChild: appendChild,\n parentNode: parentNode,\n nextSibling: nextSibling,\n tagName: tagName,\n setTextContent: setTextContent,\n setStyleScope: setStyleScope\n});\n\n/* */\n\nvar ref = {\n create: function create (_, vnode) {\n registerRef(vnode);\n },\n update: function update (oldVnode, vnode) {\n if (oldVnode.data.ref !== vnode.data.ref) {\n registerRef(oldVnode, true);\n registerRef(vnode);\n }\n },\n destroy: function destroy (vnode) {\n registerRef(vnode, true);\n }\n};\n\nfunction registerRef (vnode, isRemoval) {\n var key = vnode.data.ref;\n if (!isDef(key)) { return }\n\n var vm = vnode.context;\n var ref = vnode.componentInstance || vnode.elm;\n var refs = vm.$refs;\n if (isRemoval) {\n if (Array.isArray(refs[key])) {\n remove(refs[key], ref);\n } else if (refs[key] === ref) {\n refs[key] = undefined;\n }\n } else {\n if (vnode.data.refInFor) {\n if (!Array.isArray(refs[key])) {\n refs[key] = [ref];\n } else if (refs[key].indexOf(ref) < 0) {\n // $flow-disable-line\n refs[key].push(ref);\n }\n } else {\n refs[key] = ref;\n }\n }\n}\n\n/**\n * Virtual DOM patching algorithm based on Snabbdom by\n * Simon Friis Vindum (@paldepind)\n * Licensed under the MIT License\n * https://github.com/paldepind/snabbdom/blob/master/LICENSE\n *\n * modified by Evan You (@yyx990803)\n *\n * Not type-checking this because this file is perf-critical and the cost\n * of making flow understand it is not worth it.\n */\n\nvar emptyNode = new VNode('', {}, []);\n\nvar hooks = ['create', 'activate', 'update', 'remove', 'destroy'];\n\nfunction sameVnode (a, b) {\n return (\n a.key === b.key &&\n a.asyncFactory === b.asyncFactory && (\n (\n a.tag === b.tag &&\n a.isComment === b.isComment &&\n isDef(a.data) === isDef(b.data) &&\n sameInputType(a, b)\n ) || (\n isTrue(a.isAsyncPlaceholder) &&\n isUndef(b.asyncFactory.error)\n )\n )\n )\n}\n\nfunction sameInputType (a, b) {\n if (a.tag !== 'input') { return true }\n var i;\n var typeA = isDef(i = a.data) && isDef(i = i.attrs) && i.type;\n var typeB = isDef(i = b.data) && isDef(i = i.attrs) && i.type;\n return typeA === typeB || isTextInputType(typeA) && isTextInputType(typeB)\n}\n\nfunction createKeyToOldIdx (children, beginIdx, endIdx) {\n var i, key;\n var map = {};\n for (i = beginIdx; i <= endIdx; ++i) {\n key = children[i].key;\n if (isDef(key)) { map[key] = i; }\n }\n return map\n}\n\nfunction createPatchFunction (backend) {\n var i, j;\n var cbs = {};\n\n var modules = backend.modules;\n var nodeOps = backend.nodeOps;\n\n for (i = 0; i < hooks.length; ++i) {\n cbs[hooks[i]] = [];\n for (j = 0; j < modules.length; ++j) {\n if (isDef(modules[j][hooks[i]])) {\n cbs[hooks[i]].push(modules[j][hooks[i]]);\n }\n }\n }\n\n function emptyNodeAt (elm) {\n return new VNode(nodeOps.tagName(elm).toLowerCase(), {}, [], undefined, elm)\n }\n\n function createRmCb (childElm, listeners) {\n function remove$$1 () {\n if (--remove$$1.listeners === 0) {\n removeNode(childElm);\n }\n }\n remove$$1.listeners = listeners;\n return remove$$1\n }\n\n function removeNode (el) {\n var parent = nodeOps.parentNode(el);\n // element may have already been removed due to v-html / v-text\n if (isDef(parent)) {\n nodeOps.removeChild(parent, el);\n }\n }\n\n function isUnknownElement$$1 (vnode, inVPre) {\n return (\n !inVPre &&\n !vnode.ns &&\n !(\n config.ignoredElements.length &&\n config.ignoredElements.some(function (ignore) {\n return isRegExp(ignore)\n ? ignore.test(vnode.tag)\n : ignore === vnode.tag\n })\n ) &&\n config.isUnknownElement(vnode.tag)\n )\n }\n\n var creatingElmInVPre = 0;\n\n function createElm (\n vnode,\n insertedVnodeQueue,\n parentElm,\n refElm,\n nested,\n ownerArray,\n index\n ) {\n if (isDef(vnode.elm) && isDef(ownerArray)) {\n // This vnode was used in a previous render!\n // now it's used as a new node, overwriting its elm would cause\n // potential patch errors down the road when it's used as an insertion\n // reference node. Instead, we clone the node on-demand before creating\n // associated DOM element for it.\n vnode = ownerArray[index] = cloneVNode(vnode);\n }\n\n vnode.isRootInsert = !nested; // for transition enter check\n if (createComponent(vnode, insertedVnodeQueue, parentElm, refElm)) {\n return\n }\n\n var data = vnode.data;\n var children = vnode.children;\n var tag = vnode.tag;\n if (isDef(tag)) {\n if (process.env.NODE_ENV !== 'production') {\n if (data && data.pre) {\n creatingElmInVPre++;\n }\n if (isUnknownElement$$1(vnode, creatingElmInVPre)) {\n warn(\n 'Unknown custom element: <' + tag + '> - did you ' +\n 'register the component correctly? For recursive components, ' +\n 'make sure to provide the \"name\" option.',\n vnode.context\n );\n }\n }\n\n vnode.elm = vnode.ns\n ? nodeOps.createElementNS(vnode.ns, tag)\n : nodeOps.createElement(tag, vnode);\n setScope(vnode);\n\n /* istanbul ignore if */\n {\n createChildren(vnode, children, insertedVnodeQueue);\n if (isDef(data)) {\n invokeCreateHooks(vnode, insertedVnodeQueue);\n }\n insert(parentElm, vnode.elm, refElm);\n }\n\n if (process.env.NODE_ENV !== 'production' && data && data.pre) {\n creatingElmInVPre--;\n }\n } else if (isTrue(vnode.isComment)) {\n vnode.elm = nodeOps.createComment(vnode.text);\n insert(parentElm, vnode.elm, refElm);\n } else {\n vnode.elm = nodeOps.createTextNode(vnode.text);\n insert(parentElm, vnode.elm, refElm);\n }\n }\n\n function createComponent (vnode, insertedVnodeQueue, parentElm, refElm) {\n var i = vnode.data;\n if (isDef(i)) {\n var isReactivated = isDef(vnode.componentInstance) && i.keepAlive;\n if (isDef(i = i.hook) && isDef(i = i.init)) {\n i(vnode, false /* hydrating */);\n }\n // after calling the init hook, if the vnode is a child component\n // it should've created a child instance and mounted it. the child\n // component also has set the placeholder vnode's elm.\n // in that case we can just return the element and be done.\n if (isDef(vnode.componentInstance)) {\n initComponent(vnode, insertedVnodeQueue);\n insert(parentElm, vnode.elm, refElm);\n if (isTrue(isReactivated)) {\n reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm);\n }\n return true\n }\n }\n }\n\n function initComponent (vnode, insertedVnodeQueue) {\n if (isDef(vnode.data.pendingInsert)) {\n insertedVnodeQueue.push.apply(insertedVnodeQueue, vnode.data.pendingInsert);\n vnode.data.pendingInsert = null;\n }\n vnode.elm = vnode.componentInstance.$el;\n if (isPatchable(vnode)) {\n invokeCreateHooks(vnode, insertedVnodeQueue);\n setScope(vnode);\n } else {\n // empty component root.\n // skip all element-related modules except for ref (#3455)\n registerRef(vnode);\n // make sure to invoke the insert hook\n insertedVnodeQueue.push(vnode);\n }\n }\n\n function reactivateComponent (vnode, insertedVnodeQueue, parentElm, refElm) {\n var i;\n // hack for #4339: a reactivated component with inner transition\n // does not trigger because the inner node's created hooks are not called\n // again. It's not ideal to involve module-specific logic in here but\n // there doesn't seem to be a better way to do it.\n var innerNode = vnode;\n while (innerNode.componentInstance) {\n innerNode = innerNode.componentInstance._vnode;\n if (isDef(i = innerNode.data) && isDef(i = i.transition)) {\n for (i = 0; i < cbs.activate.length; ++i) {\n cbs.activate[i](emptyNode, innerNode);\n }\n insertedVnodeQueue.push(innerNode);\n break\n }\n }\n // unlike a newly created component,\n // a reactivated keep-alive component doesn't insert itself\n insert(parentElm, vnode.elm, refElm);\n }\n\n function insert (parent, elm, ref$$1) {\n if (isDef(parent)) {\n if (isDef(ref$$1)) {\n if (nodeOps.parentNode(ref$$1) === parent) {\n nodeOps.insertBefore(parent, elm, ref$$1);\n }\n } else {\n nodeOps.appendChild(parent, elm);\n }\n }\n }\n\n function createChildren (vnode, children, insertedVnodeQueue) {\n if (Array.isArray(children)) {\n if (process.env.NODE_ENV !== 'production') {\n checkDuplicateKeys(children);\n }\n for (var i = 0; i < children.length; ++i) {\n createElm(children[i], insertedVnodeQueue, vnode.elm, null, true, children, i);\n }\n } else if (isPrimitive(vnode.text)) {\n nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(String(vnode.text)));\n }\n }\n\n function isPatchable (vnode) {\n while (vnode.componentInstance) {\n vnode = vnode.componentInstance._vnode;\n }\n return isDef(vnode.tag)\n }\n\n function invokeCreateHooks (vnode, insertedVnodeQueue) {\n for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {\n cbs.create[i$1](emptyNode, vnode);\n }\n i = vnode.data.hook; // Reuse variable\n if (isDef(i)) {\n if (isDef(i.create)) { i.create(emptyNode, vnode); }\n if (isDef(i.insert)) { insertedVnodeQueue.push(vnode); }\n }\n }\n\n // set scope id attribute for scoped CSS.\n // this is implemented as a special case to avoid the overhead\n // of going through the normal attribute patching process.\n function setScope (vnode) {\n var i;\n if (isDef(i = vnode.fnScopeId)) {\n nodeOps.setStyleScope(vnode.elm, i);\n } else {\n var ancestor = vnode;\n while (ancestor) {\n if (isDef(i = ancestor.context) && isDef(i = i.$options._scopeId)) {\n nodeOps.setStyleScope(vnode.elm, i);\n }\n ancestor = ancestor.parent;\n }\n }\n // for slot content they should also get the scopeId from the host instance.\n if (isDef(i = activeInstance) &&\n i !== vnode.context &&\n i !== vnode.fnContext &&\n isDef(i = i.$options._scopeId)\n ) {\n nodeOps.setStyleScope(vnode.elm, i);\n }\n }\n\n function addVnodes (parentElm, refElm, vnodes, startIdx, endIdx, insertedVnodeQueue) {\n for (; startIdx <= endIdx; ++startIdx) {\n createElm(vnodes[startIdx], insertedVnodeQueue, parentElm, refElm, false, vnodes, startIdx);\n }\n }\n\n function invokeDestroyHook (vnode) {\n var i, j;\n var data = vnode.data;\n if (isDef(data)) {\n if (isDef(i = data.hook) && isDef(i = i.destroy)) { i(vnode); }\n for (i = 0; i < cbs.destroy.length; ++i) { cbs.destroy[i](vnode); }\n }\n if (isDef(i = vnode.children)) {\n for (j = 0; j < vnode.children.length; ++j) {\n invokeDestroyHook(vnode.children[j]);\n }\n }\n }\n\n function removeVnodes (vnodes, startIdx, endIdx) {\n for (; startIdx <= endIdx; ++startIdx) {\n var ch = vnodes[startIdx];\n if (isDef(ch)) {\n if (isDef(ch.tag)) {\n removeAndInvokeRemoveHook(ch);\n invokeDestroyHook(ch);\n } else { // Text node\n removeNode(ch.elm);\n }\n }\n }\n }\n\n function removeAndInvokeRemoveHook (vnode, rm) {\n if (isDef(rm) || isDef(vnode.data)) {\n var i;\n var listeners = cbs.remove.length + 1;\n if (isDef(rm)) {\n // we have a recursively passed down rm callback\n // increase the listeners count\n rm.listeners += listeners;\n } else {\n // directly removing\n rm = createRmCb(vnode.elm, listeners);\n }\n // recursively invoke hooks on child component root node\n if (isDef(i = vnode.componentInstance) && isDef(i = i._vnode) && isDef(i.data)) {\n removeAndInvokeRemoveHook(i, rm);\n }\n for (i = 0; i < cbs.remove.length; ++i) {\n cbs.remove[i](vnode, rm);\n }\n if (isDef(i = vnode.data.hook) && isDef(i = i.remove)) {\n i(vnode, rm);\n } else {\n rm();\n }\n } else {\n removeNode(vnode.elm);\n }\n }\n\n function updateChildren (parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) {\n var oldStartIdx = 0;\n var newStartIdx = 0;\n var oldEndIdx = oldCh.length - 1;\n var oldStartVnode = oldCh[0];\n var oldEndVnode = oldCh[oldEndIdx];\n var newEndIdx = newCh.length - 1;\n var newStartVnode = newCh[0];\n var newEndVnode = newCh[newEndIdx];\n var oldKeyToIdx, idxInOld, vnodeToMove, refElm;\n\n // removeOnly is a special flag used only by <transition-group>\n // to ensure removed elements stay in correct relative positions\n // during leaving transitions\n var canMove = !removeOnly;\n\n if (process.env.NODE_ENV !== 'production') {\n checkDuplicateKeys(newCh);\n }\n\n while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {\n if (isUndef(oldStartVnode)) {\n oldStartVnode = oldCh[++oldStartIdx]; // Vnode has been moved left\n } else if (isUndef(oldEndVnode)) {\n oldEndVnode = oldCh[--oldEndIdx];\n } else if (sameVnode(oldStartVnode, newStartVnode)) {\n patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);\n oldStartVnode = oldCh[++oldStartIdx];\n newStartVnode = newCh[++newStartIdx];\n } else if (sameVnode(oldEndVnode, newEndVnode)) {\n patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);\n oldEndVnode = oldCh[--oldEndIdx];\n newEndVnode = newCh[--newEndIdx];\n } else if (sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right\n patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);\n canMove && nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm));\n oldStartVnode = oldCh[++oldStartIdx];\n newEndVnode = newCh[--newEndIdx];\n } else if (sameVnode(oldEndVnode, newStartVnode)) { // Vnode moved left\n patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);\n canMove && nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm);\n oldEndVnode = oldCh[--oldEndIdx];\n newStartVnode = newCh[++newStartIdx];\n } else {\n if (isUndef(oldKeyToIdx)) { oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx); }\n idxInOld = isDef(newStartVnode.key)\n ? oldKeyToIdx[newStartVnode.key]\n : findIdxInOld(newStartVnode, oldCh, oldStartIdx, oldEndIdx);\n if (isUndef(idxInOld)) { // New element\n createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);\n } else {\n vnodeToMove = oldCh[idxInOld];\n if (sameVnode(vnodeToMove, newStartVnode)) {\n patchVnode(vnodeToMove, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);\n oldCh[idxInOld] = undefined;\n canMove && nodeOps.insertBefore(parentElm, vnodeToMove.elm, oldStartVnode.elm);\n } else {\n // same key but different element. treat as new element\n createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);\n }\n }\n newStartVnode = newCh[++newStartIdx];\n }\n }\n if (oldStartIdx > oldEndIdx) {\n refElm = isUndef(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;\n addVnodes(parentElm, refElm, newCh, newStartIdx, newEndIdx, insertedVnodeQueue);\n } else if (newStartIdx > newEndIdx) {\n removeVnodes(oldCh, oldStartIdx, oldEndIdx);\n }\n }\n\n function checkDuplicateKeys (children) {\n var seenKeys = {};\n for (var i = 0; i < children.length; i++) {\n var vnode = children[i];\n var key = vnode.key;\n if (isDef(key)) {\n if (seenKeys[key]) {\n warn(\n (\"Duplicate keys detected: '\" + key + \"'. This may cause an update error.\"),\n vnode.context\n );\n } else {\n seenKeys[key] = true;\n }\n }\n }\n }\n\n function findIdxInOld (node, oldCh, start, end) {\n for (var i = start; i < end; i++) {\n var c = oldCh[i];\n if (isDef(c) && sameVnode(node, c)) { return i }\n }\n }\n\n function patchVnode (\n oldVnode,\n vnode,\n insertedVnodeQueue,\n ownerArray,\n index,\n removeOnly\n ) {\n if (oldVnode === vnode) {\n return\n }\n\n if (isDef(vnode.elm) && isDef(ownerArray)) {\n // clone reused vnode\n vnode = ownerArray[index] = cloneVNode(vnode);\n }\n\n var elm = vnode.elm = oldVnode.elm;\n\n if (isTrue(oldVnode.isAsyncPlaceholder)) {\n if (isDef(vnode.asyncFactory.resolved)) {\n hydrate(oldVnode.elm, vnode, insertedVnodeQueue);\n } else {\n vnode.isAsyncPlaceholder = true;\n }\n return\n }\n\n // reuse element for static trees.\n // note we only do this if the vnode is cloned -\n // if the new node is not cloned it means the render functions have been\n // reset by the hot-reload-api and we need to do a proper re-render.\n if (isTrue(vnode.isStatic) &&\n isTrue(oldVnode.isStatic) &&\n vnode.key === oldVnode.key &&\n (isTrue(vnode.isCloned) || isTrue(vnode.isOnce))\n ) {\n vnode.componentInstance = oldVnode.componentInstance;\n return\n }\n\n var i;\n var data = vnode.data;\n if (isDef(data) && isDef(i = data.hook) && isDef(i = i.prepatch)) {\n i(oldVnode, vnode);\n }\n\n var oldCh = oldVnode.children;\n var ch = vnode.children;\n if (isDef(data) && isPatchable(vnode)) {\n for (i = 0; i < cbs.update.length; ++i) { cbs.update[i](oldVnode, vnode); }\n if (isDef(i = data.hook) && isDef(i = i.update)) { i(oldVnode, vnode); }\n }\n if (isUndef(vnode.text)) {\n if (isDef(oldCh) && isDef(ch)) {\n if (oldCh !== ch) { updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly); }\n } else if (isDef(ch)) {\n if (process.env.NODE_ENV !== 'production') {\n checkDuplicateKeys(ch);\n }\n if (isDef(oldVnode.text)) { nodeOps.setTextContent(elm, ''); }\n addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue);\n } else if (isDef(oldCh)) {\n removeVnodes(oldCh, 0, oldCh.length - 1);\n } else if (isDef(oldVnode.text)) {\n nodeOps.setTextContent(elm, '');\n }\n } else if (oldVnode.text !== vnode.text) {\n nodeOps.setTextContent(elm, vnode.text);\n }\n if (isDef(data)) {\n if (isDef(i = data.hook) && isDef(i = i.postpatch)) { i(oldVnode, vnode); }\n }\n }\n\n function invokeInsertHook (vnode, queue, initial) {\n // delay insert hooks for component root nodes, invoke them after the\n // element is really inserted\n if (isTrue(initial) && isDef(vnode.parent)) {\n vnode.parent.data.pendingInsert = queue;\n } else {\n for (var i = 0; i < queue.length; ++i) {\n queue[i].data.hook.insert(queue[i]);\n }\n }\n }\n\n var hydrationBailed = false;\n // list of modules that can skip create hook during hydration because they\n // are already rendered on the client or has no need for initialization\n // Note: style is excluded because it relies on initial clone for future\n // deep updates (#7063).\n var isRenderedModule = makeMap('attrs,class,staticClass,staticStyle,key');\n\n // Note: this is a browser-only function so we can assume elms are DOM nodes.\n function hydrate (elm, vnode, insertedVnodeQueue, inVPre) {\n var i;\n var tag = vnode.tag;\n var data = vnode.data;\n var children = vnode.children;\n inVPre = inVPre || (data && data.pre);\n vnode.elm = elm;\n\n if (isTrue(vnode.isComment) && isDef(vnode.asyncFactory)) {\n vnode.isAsyncPlaceholder = true;\n return true\n }\n // assert node match\n if (process.env.NODE_ENV !== 'production') {\n if (!assertNodeMatch(elm, vnode, inVPre)) {\n return false\n }\n }\n if (isDef(data)) {\n if (isDef(i = data.hook) && isDef(i = i.init)) { i(vnode, true /* hydrating */); }\n if (isDef(i = vnode.componentInstance)) {\n // child component. it should have hydrated its own tree.\n initComponent(vnode, insertedVnodeQueue);\n return true\n }\n }\n if (isDef(tag)) {\n if (isDef(children)) {\n // empty element, allow client to pick up and populate children\n if (!elm.hasChildNodes()) {\n createChildren(vnode, children, insertedVnodeQueue);\n } else {\n // v-html and domProps: innerHTML\n if (isDef(i = data) && isDef(i = i.domProps) && isDef(i = i.innerHTML)) {\n if (i !== elm.innerHTML) {\n /* istanbul ignore if */\n if (process.env.NODE_ENV !== 'production' &&\n typeof console !== 'undefined' &&\n !hydrationBailed\n ) {\n hydrationBailed = true;\n console.warn('Parent: ', elm);\n console.warn('server innerHTML: ', i);\n console.warn('client innerHTML: ', elm.innerHTML);\n }\n return false\n }\n } else {\n // iterate and compare children lists\n var childrenMatch = true;\n var childNode = elm.firstChild;\n for (var i$1 = 0; i$1 < children.length; i$1++) {\n if (!childNode || !hydrate(childNode, children[i$1], insertedVnodeQueue, inVPre)) {\n childrenMatch = false;\n break\n }\n childNode = childNode.nextSibling;\n }\n // if childNode is not null, it means the actual childNodes list is\n // longer than the virtual children list.\n if (!childrenMatch || childNode) {\n /* istanbul ignore if */\n if (process.env.NODE_ENV !== 'production' &&\n typeof console !== 'undefined' &&\n !hydrationBailed\n ) {\n hydrationBailed = true;\n console.warn('Parent: ', elm);\n console.warn('Mismatching childNodes vs. VNodes: ', elm.childNodes, children);\n }\n return false\n }\n }\n }\n }\n if (isDef(data)) {\n var fullInvoke = false;\n for (var key in data) {\n if (!isRenderedModule(key)) {\n fullInvoke = true;\n invokeCreateHooks(vnode, insertedVnodeQueue);\n break\n }\n }\n if (!fullInvoke && data['class']) {\n // ensure collecting deps for deep class bindings for future updates\n traverse(data['class']);\n }\n }\n } else if (elm.data !== vnode.text) {\n elm.data = vnode.text;\n }\n return true\n }\n\n function assertNodeMatch (node, vnode, inVPre) {\n if (isDef(vnode.tag)) {\n return vnode.tag.indexOf('vue-component') === 0 || (\n !isUnknownElement$$1(vnode, inVPre) &&\n vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase())\n )\n } else {\n return node.nodeType === (vnode.isComment ? 8 : 3)\n }\n }\n\n return function patch (oldVnode, vnode, hydrating, removeOnly) {\n if (isUndef(vnode)) {\n if (isDef(oldVnode)) { invokeDestroyHook(oldVnode); }\n return\n }\n\n var isInitialPatch = false;\n var insertedVnodeQueue = [];\n\n if (isUndef(oldVnode)) {\n // empty mount (likely as component), create new root element\n isInitialPatch = true;\n createElm(vnode, insertedVnodeQueue);\n } else {\n var isRealElement = isDef(oldVnode.nodeType);\n if (!isRealElement && sameVnode(oldVnode, vnode)) {\n // patch existing root node\n patchVnode(oldVnode, vnode, insertedVnodeQueue, null, null, removeOnly);\n } else {\n if (isRealElement) {\n // mounting to a real element\n // check if this is server-rendered content and if we can perform\n // a successful hydration.\n if (oldVnode.nodeType === 1 && oldVnode.hasAttribute(SSR_ATTR)) {\n oldVnode.removeAttribute(SSR_ATTR);\n hydrating = true;\n }\n if (isTrue(hydrating)) {\n if (hydrate(oldVnode, vnode, insertedVnodeQueue)) {\n invokeInsertHook(vnode, insertedVnodeQueue, true);\n return oldVnode\n } else if (process.env.NODE_ENV !== 'production') {\n warn(\n 'The client-side rendered virtual DOM tree is not matching ' +\n 'server-rendered content. This is likely caused by incorrect ' +\n 'HTML markup, for example nesting block-level elements inside ' +\n '<p>, or missing <tbody>. Bailing hydration and performing ' +\n 'full client-side render.'\n );\n }\n }\n // either not server-rendered, or hydration failed.\n // create an empty node and replace it\n oldVnode = emptyNodeAt(oldVnode);\n }\n\n // replacing existing element\n var oldElm = oldVnode.elm;\n var parentElm = nodeOps.parentNode(oldElm);\n\n // create new node\n createElm(\n vnode,\n insertedVnodeQueue,\n // extremely rare edge case: do not insert if old element is in a\n // leaving transition. Only happens when combining transition +\n // keep-alive + HOCs. (#4590)\n oldElm._leaveCb ? null : parentElm,\n nodeOps.nextSibling(oldElm)\n );\n\n // update parent placeholder node element, recursively\n if (isDef(vnode.parent)) {\n var ancestor = vnode.parent;\n var patchable = isPatchable(vnode);\n while (ancestor) {\n for (var i = 0; i < cbs.destroy.length; ++i) {\n cbs.destroy[i](ancestor);\n }\n ancestor.elm = vnode.elm;\n if (patchable) {\n for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {\n cbs.create[i$1](emptyNode, ancestor);\n }\n // #6513\n // invoke insert hooks that may have been merged by create hooks.\n // e.g. for directives that uses the \"inserted\" hook.\n var insert = ancestor.data.hook.insert;\n if (insert.merged) {\n // start at index 1 to avoid re-invoking component mounted hook\n for (var i$2 = 1; i$2 < insert.fns.length; i$2++) {\n insert.fns[i$2]();\n }\n }\n } else {\n registerRef(ancestor);\n }\n ancestor = ancestor.parent;\n }\n }\n\n // destroy old node\n if (isDef(parentElm)) {\n removeVnodes([oldVnode], 0, 0);\n } else if (isDef(oldVnode.tag)) {\n invokeDestroyHook(oldVnode);\n }\n }\n }\n\n invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch);\n return vnode.elm\n }\n}\n\n/* */\n\nvar directives = {\n create: updateDirectives,\n update: updateDirectives,\n destroy: function unbindDirectives (vnode) {\n updateDirectives(vnode, emptyNode);\n }\n};\n\nfunction updateDirectives (oldVnode, vnode) {\n if (oldVnode.data.directives || vnode.data.directives) {\n _update(oldVnode, vnode);\n }\n}\n\nfunction _update (oldVnode, vnode) {\n var isCreate = oldVnode === emptyNode;\n var isDestroy = vnode === emptyNode;\n var oldDirs = normalizeDirectives$1(oldVnode.data.directives, oldVnode.context);\n var newDirs = normalizeDirectives$1(vnode.data.directives, vnode.context);\n\n var dirsWithInsert = [];\n var dirsWithPostpatch = [];\n\n var key, oldDir, dir;\n for (key in newDirs) {\n oldDir = oldDirs[key];\n dir = newDirs[key];\n if (!oldDir) {\n // new directive, bind\n callHook$1(dir, 'bind', vnode, oldVnode);\n if (dir.def && dir.def.inserted) {\n dirsWithInsert.push(dir);\n }\n } else {\n // existing directive, update\n dir.oldValue = oldDir.value;\n dir.oldArg = oldDir.arg;\n callHook$1(dir, 'update', vnode, oldVnode);\n if (dir.def && dir.def.componentUpdated) {\n dirsWithPostpatch.push(dir);\n }\n }\n }\n\n if (dirsWithInsert.length) {\n var callInsert = function () {\n for (var i = 0; i < dirsWithInsert.length; i++) {\n callHook$1(dirsWithInsert[i], 'inserted', vnode, oldVnode);\n }\n };\n if (isCreate) {\n mergeVNodeHook(vnode, 'insert', callInsert);\n } else {\n callInsert();\n }\n }\n\n if (dirsWithPostpatch.length) {\n mergeVNodeHook(vnode, 'postpatch', function () {\n for (var i = 0; i < dirsWithPostpatch.length; i++) {\n callHook$1(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode);\n }\n });\n }\n\n if (!isCreate) {\n for (key in oldDirs) {\n if (!newDirs[key]) {\n // no longer present, unbind\n callHook$1(oldDirs[key], 'unbind', oldVnode, oldVnode, isDestroy);\n }\n }\n }\n}\n\nvar emptyModifiers = Object.create(null);\n\nfunction normalizeDirectives$1 (\n dirs,\n vm\n) {\n var res = Object.create(null);\n if (!dirs) {\n // $flow-disable-line\n return res\n }\n var i, dir;\n for (i = 0; i < dirs.length; i++) {\n dir = dirs[i];\n if (!dir.modifiers) {\n // $flow-disable-line\n dir.modifiers = emptyModifiers;\n }\n res[getRawDirName(dir)] = dir;\n dir.def = resolveAsset(vm.$options, 'directives', dir.name, true);\n }\n // $flow-disable-line\n return res\n}\n\nfunction getRawDirName (dir) {\n return dir.rawName || ((dir.name) + \".\" + (Object.keys(dir.modifiers || {}).join('.')))\n}\n\nfunction callHook$1 (dir, hook, vnode, oldVnode, isDestroy) {\n var fn = dir.def && dir.def[hook];\n if (fn) {\n try {\n fn(vnode.elm, dir, vnode, oldVnode, isDestroy);\n } catch (e) {\n handleError(e, vnode.context, (\"directive \" + (dir.name) + \" \" + hook + \" hook\"));\n }\n }\n}\n\nvar baseModules = [\n ref,\n directives\n];\n\n/* */\n\nfunction updateAttrs (oldVnode, vnode) {\n var opts = vnode.componentOptions;\n if (isDef(opts) && opts.Ctor.options.inheritAttrs === false) {\n return\n }\n if (isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) {\n return\n }\n var key, cur, old;\n var elm = vnode.elm;\n var oldAttrs = oldVnode.data.attrs || {};\n var attrs = vnode.data.attrs || {};\n // clone observed objects, as the user probably wants to mutate it\n if (isDef(attrs.__ob__)) {\n attrs = vnode.data.attrs = extend({}, attrs);\n }\n\n for (key in attrs) {\n cur = attrs[key];\n old = oldAttrs[key];\n if (old !== cur) {\n setAttr(elm, key, cur, vnode.data.pre);\n }\n }\n // #4391: in IE9, setting type can reset value for input[type=radio]\n // #6666: IE/Edge forces progress value down to 1 before setting a max\n /* istanbul ignore if */\n if ((isIE || isEdge) && attrs.value !== oldAttrs.value) {\n setAttr(elm, 'value', attrs.value);\n }\n for (key in oldAttrs) {\n if (isUndef(attrs[key])) {\n if (isXlink(key)) {\n elm.removeAttributeNS(xlinkNS, getXlinkProp(key));\n } else if (!isEnumeratedAttr(key)) {\n elm.removeAttribute(key);\n }\n }\n }\n}\n\nfunction setAttr (el, key, value, isInPre) {\n if (isInPre || el.tagName.indexOf('-') > -1) {\n baseSetAttr(el, key, value);\n } else if (isBooleanAttr(key)) {\n // set attribute for blank value\n // e.g. <option disabled>Select one</option>\n if (isFalsyAttrValue(value)) {\n el.removeAttribute(key);\n } else {\n // technically allowfullscreen is a boolean attribute for <iframe>,\n // but Flash expects a value of \"true\" when used on <embed> tag\n value = key === 'allowfullscreen' && el.tagName === 'EMBED'\n ? 'true'\n : key;\n el.setAttribute(key, value);\n }\n } else if (isEnumeratedAttr(key)) {\n el.setAttribute(key, convertEnumeratedValue(key, value));\n } else if (isXlink(key)) {\n if (isFalsyAttrValue(value)) {\n el.removeAttributeNS(xlinkNS, getXlinkProp(key));\n } else {\n el.setAttributeNS(xlinkNS, key, value);\n }\n } else {\n baseSetAttr(el, key, value);\n }\n}\n\nfunction baseSetAttr (el, key, value) {\n if (isFalsyAttrValue(value)) {\n el.removeAttribute(key);\n } else {\n // #7138: IE10 & 11 fires input event when setting placeholder on\n // <textarea>... block the first input event and remove the blocker\n // immediately.\n /* istanbul ignore if */\n if (\n isIE && !isIE9 &&\n el.tagName === 'TEXTAREA' &&\n key === 'placeholder' && value !== '' && !el.__ieph\n ) {\n var blocker = function (e) {\n e.stopImmediatePropagation();\n el.removeEventListener('input', blocker);\n };\n el.addEventListener('input', blocker);\n // $flow-disable-line\n el.__ieph = true; /* IE placeholder patched */\n }\n el.setAttribute(key, value);\n }\n}\n\nvar attrs = {\n create: updateAttrs,\n update: updateAttrs\n};\n\n/* */\n\nfunction updateClass (oldVnode, vnode) {\n var el = vnode.elm;\n var data = vnode.data;\n var oldData = oldVnode.data;\n if (\n isUndef(data.staticClass) &&\n isUndef(data.class) && (\n isUndef(oldData) || (\n isUndef(oldData.staticClass) &&\n isUndef(oldData.class)\n )\n )\n ) {\n return\n }\n\n var cls = genClassForVnode(vnode);\n\n // handle transition classes\n var transitionClass = el._transitionClasses;\n if (isDef(transitionClass)) {\n cls = concat(cls, stringifyClass(transitionClass));\n }\n\n // set the class\n if (cls !== el._prevClass) {\n el.setAttribute('class', cls);\n el._prevClass = cls;\n }\n}\n\nvar klass = {\n create: updateClass,\n update: updateClass\n};\n\n/* */\n\n/* */\n\n/* */\n\n/* */\n\n// in some cases, the event used has to be determined at runtime\n// so we used some reserved tokens during compile.\nvar RANGE_TOKEN = '__r';\nvar CHECKBOX_RADIO_TOKEN = '__c';\n\n/* */\n\n// normalize v-model event tokens that can only be determined at runtime.\n// it's important to place the event as the first in the array because\n// the whole point is ensuring the v-model callback gets called before\n// user-attached handlers.\nfunction normalizeEvents (on) {\n /* istanbul ignore if */\n if (isDef(on[RANGE_TOKEN])) {\n // IE input[type=range] only supports `change` event\n var event = isIE ? 'change' : 'input';\n on[event] = [].concat(on[RANGE_TOKEN], on[event] || []);\n delete on[RANGE_TOKEN];\n }\n // This was originally intended to fix #4521 but no longer necessary\n // after 2.5. Keeping it for backwards compat with generated code from < 2.4\n /* istanbul ignore if */\n if (isDef(on[CHECKBOX_RADIO_TOKEN])) {\n on.change = [].concat(on[CHECKBOX_RADIO_TOKEN], on.change || []);\n delete on[CHECKBOX_RADIO_TOKEN];\n }\n}\n\nvar target$1;\n\nfunction createOnceHandler$1 (event, handler, capture) {\n var _target = target$1; // save current target element in closure\n return function onceHandler () {\n var res = handler.apply(null, arguments);\n if (res !== null) {\n remove$2(event, onceHandler, capture, _target);\n }\n }\n}\n\n// #9446: Firefox <= 53 (in particular, ESR 52) has incorrect Event.timeStamp\n// implementation and does not fire microtasks in between event propagation, so\n// safe to exclude.\nvar useMicrotaskFix = isUsingMicroTask && !(isFF && Number(isFF[1]) <= 53);\n\nfunction add$1 (\n name,\n handler,\n capture,\n passive\n) {\n // async edge case #6566: inner click event triggers patch, event handler\n // attached to outer element during patch, and triggered again. This\n // happens because browsers fire microtask ticks between event propagation.\n // the solution is simple: we save the timestamp when a handler is attached,\n // and the handler would only fire if the event passed to it was fired\n // AFTER it was attached.\n if (useMicrotaskFix) {\n var attachedTimestamp = currentFlushTimestamp;\n var original = handler;\n handler = original._wrapper = function (e) {\n if (\n // no bubbling, should always fire.\n // this is just a safety net in case event.timeStamp is unreliable in\n // certain weird environments...\n e.target === e.currentTarget ||\n // event is fired after handler attachment\n e.timeStamp >= attachedTimestamp ||\n // bail for environments that have buggy event.timeStamp implementations\n // #9462 iOS 9 bug: event.timeStamp is 0 after history.pushState\n // #9681 QtWebEngine event.timeStamp is negative value\n e.timeStamp <= 0 ||\n // #9448 bail if event is fired in another document in a multi-page\n // electron/nw.js app, since event.timeStamp will be using a different\n // starting reference\n e.target.ownerDocument !== document\n ) {\n return original.apply(this, arguments)\n }\n };\n }\n target$1.addEventListener(\n name,\n handler,\n supportsPassive\n ? { capture: capture, passive: passive }\n : capture\n );\n}\n\nfunction remove$2 (\n name,\n handler,\n capture,\n _target\n) {\n (_target || target$1).removeEventListener(\n name,\n handler._wrapper || handler,\n capture\n );\n}\n\nfunction updateDOMListeners (oldVnode, vnode) {\n if (isUndef(oldVnode.data.on) && isUndef(vnode.data.on)) {\n return\n }\n var on = vnode.data.on || {};\n var oldOn = oldVnode.data.on || {};\n target$1 = vnode.elm;\n normalizeEvents(on);\n updateListeners(on, oldOn, add$1, remove$2, createOnceHandler$1, vnode.context);\n target$1 = undefined;\n}\n\nvar events = {\n create: updateDOMListeners,\n update: updateDOMListeners\n};\n\n/* */\n\nvar svgContainer;\n\nfunction updateDOMProps (oldVnode, vnode) {\n if (isUndef(oldVnode.data.domProps) && isUndef(vnode.data.domProps)) {\n return\n }\n var key, cur;\n var elm = vnode.elm;\n var oldProps = oldVnode.data.domProps || {};\n var props = vnode.data.domProps || {};\n // clone observed objects, as the user probably wants to mutate it\n if (isDef(props.__ob__)) {\n props = vnode.data.domProps = extend({}, props);\n }\n\n for (key in oldProps) {\n if (!(key in props)) {\n elm[key] = '';\n }\n }\n\n for (key in props) {\n cur = props[key];\n // ignore children if the node has textContent or innerHTML,\n // as these will throw away existing DOM nodes and cause removal errors\n // on subsequent patches (#3360)\n if (key === 'textContent' || key === 'innerHTML') {\n if (vnode.children) { vnode.children.length = 0; }\n if (cur === oldProps[key]) { continue }\n // #6601 work around Chrome version <= 55 bug where single textNode\n // replaced by innerHTML/textContent retains its parentNode property\n if (elm.childNodes.length === 1) {\n elm.removeChild(elm.childNodes[0]);\n }\n }\n\n if (key === 'value' && elm.tagName !== 'PROGRESS') {\n // store value as _value as well since\n // non-string values will be stringified\n elm._value = cur;\n // avoid resetting cursor position when value is the same\n var strCur = isUndef(cur) ? '' : String(cur);\n if (shouldUpdateValue(elm, strCur)) {\n elm.value = strCur;\n }\n } else if (key === 'innerHTML' && isSVG(elm.tagName) && isUndef(elm.innerHTML)) {\n // IE doesn't support innerHTML for SVG elements\n svgContainer = svgContainer || document.createElement('div');\n svgContainer.innerHTML = \"<svg>\" + cur + \"</svg>\";\n var svg = svgContainer.firstChild;\n while (elm.firstChild) {\n elm.removeChild(elm.firstChild);\n }\n while (svg.firstChild) {\n elm.appendChild(svg.firstChild);\n }\n } else if (\n // skip the update if old and new VDOM state is the same.\n // `value` is handled separately because the DOM value may be temporarily\n // out of sync with VDOM state due to focus, composition and modifiers.\n // This #4521 by skipping the unnecessary `checked` update.\n cur !== oldProps[key]\n ) {\n // some property updates can throw\n // e.g. `value` on <progress> w/ non-finite value\n try {\n elm[key] = cur;\n } catch (e) {}\n }\n }\n}\n\n// check platforms/web/util/attrs.js acceptValue\n\n\nfunction shouldUpdateValue (elm, checkVal) {\n return (!elm.composing && (\n elm.tagName === 'OPTION' ||\n isNotInFocusAndDirty(elm, checkVal) ||\n isDirtyWithModifiers(elm, checkVal)\n ))\n}\n\nfunction isNotInFocusAndDirty (elm, checkVal) {\n // return true when textbox (.number and .trim) loses focus and its value is\n // not equal to the updated value\n var notInFocus = true;\n // #6157\n // work around IE bug when accessing document.activeElement in an iframe\n try { notInFocus = document.activeElement !== elm; } catch (e) {}\n return notInFocus && elm.value !== checkVal\n}\n\nfunction isDirtyWithModifiers (elm, newVal) {\n var value = elm.value;\n var modifiers = elm._vModifiers; // injected by v-model runtime\n if (isDef(modifiers)) {\n if (modifiers.number) {\n return toNumber(value) !== toNumber(newVal)\n }\n if (modifiers.trim) {\n return value.trim() !== newVal.trim()\n }\n }\n return value !== newVal\n}\n\nvar domProps = {\n create: updateDOMProps,\n update: updateDOMProps\n};\n\n/* */\n\nvar parseStyleText = cached(function (cssText) {\n var res = {};\n var listDelimiter = /;(?![^(]*\\))/g;\n var propertyDelimiter = /:(.+)/;\n cssText.split(listDelimiter).forEach(function (item) {\n if (item) {\n var tmp = item.split(propertyDelimiter);\n tmp.length > 1 && (res[tmp[0].trim()] = tmp[1].trim());\n }\n });\n return res\n});\n\n// merge static and dynamic style data on the same vnode\nfunction normalizeStyleData (data) {\n var style = normalizeStyleBinding(data.style);\n // static style is pre-processed into an object during compilation\n // and is always a fresh object, so it's safe to merge into it\n return data.staticStyle\n ? extend(data.staticStyle, style)\n : style\n}\n\n// normalize possible array / string values into Object\nfunction normalizeStyleBinding (bindingStyle) {\n if (Array.isArray(bindingStyle)) {\n return toObject(bindingStyle)\n }\n if (typeof bindingStyle === 'string') {\n return parseStyleText(bindingStyle)\n }\n return bindingStyle\n}\n\n/**\n * parent component style should be after child's\n * so that parent component's style could override it\n */\nfunction getStyle (vnode, checkChild) {\n var res = {};\n var styleData;\n\n if (checkChild) {\n var childNode = vnode;\n while (childNode.componentInstance) {\n childNode = childNode.componentInstance._vnode;\n if (\n childNode && childNode.data &&\n (styleData = normalizeStyleData(childNode.data))\n ) {\n extend(res, styleData);\n }\n }\n }\n\n if ((styleData = normalizeStyleData(vnode.data))) {\n extend(res, styleData);\n }\n\n var parentNode = vnode;\n while ((parentNode = parentNode.parent)) {\n if (parentNode.data && (styleData = normalizeStyleData(parentNode.data))) {\n extend(res, styleData);\n }\n }\n return res\n}\n\n/* */\n\nvar cssVarRE = /^--/;\nvar importantRE = /\\s*!important$/;\nvar setProp = function (el, name, val) {\n /* istanbul ignore if */\n if (cssVarRE.test(name)) {\n el.style.setProperty(name, val);\n } else if (importantRE.test(val)) {\n el.style.setProperty(hyphenate(name), val.replace(importantRE, ''), 'important');\n } else {\n var normalizedName = normalize(name);\n if (Array.isArray(val)) {\n // Support values array created by autoprefixer, e.g.\n // {display: [\"-webkit-box\", \"-ms-flexbox\", \"flex\"]}\n // Set them one by one, and the browser will only set those it can recognize\n for (var i = 0, len = val.length; i < len; i++) {\n el.style[normalizedName] = val[i];\n }\n } else {\n el.style[normalizedName] = val;\n }\n }\n};\n\nvar vendorNames = ['Webkit', 'Moz', 'ms'];\n\nvar emptyStyle;\nvar normalize = cached(function (prop) {\n emptyStyle = emptyStyle || document.createElement('div').style;\n prop = camelize(prop);\n if (prop !== 'filter' && (prop in emptyStyle)) {\n return prop\n }\n var capName = prop.charAt(0).toUpperCase() + prop.slice(1);\n for (var i = 0; i < vendorNames.length; i++) {\n var name = vendorNames[i] + capName;\n if (name in emptyStyle) {\n return name\n }\n }\n});\n\nfunction updateStyle (oldVnode, vnode) {\n var data = vnode.data;\n var oldData = oldVnode.data;\n\n if (isUndef(data.staticStyle) && isUndef(data.style) &&\n isUndef(oldData.staticStyle) && isUndef(oldData.style)\n ) {\n return\n }\n\n var cur, name;\n var el = vnode.elm;\n var oldStaticStyle = oldData.staticStyle;\n var oldStyleBinding = oldData.normalizedStyle || oldData.style || {};\n\n // if static style exists, stylebinding already merged into it when doing normalizeStyleData\n var oldStyle = oldStaticStyle || oldStyleBinding;\n\n var style = normalizeStyleBinding(vnode.data.style) || {};\n\n // store normalized style under a different key for next diff\n // make sure to clone it if it's reactive, since the user likely wants\n // to mutate it.\n vnode.data.normalizedStyle = isDef(style.__ob__)\n ? extend({}, style)\n : style;\n\n var newStyle = getStyle(vnode, true);\n\n for (name in oldStyle) {\n if (isUndef(newStyle[name])) {\n setProp(el, name, '');\n }\n }\n for (name in newStyle) {\n cur = newStyle[name];\n if (cur !== oldStyle[name]) {\n // ie9 setting to null has no effect, must use empty string\n setProp(el, name, cur == null ? '' : cur);\n }\n }\n}\n\nvar style = {\n create: updateStyle,\n update: updateStyle\n};\n\n/* */\n\nvar whitespaceRE = /\\s+/;\n\n/**\n * Add class with compatibility for SVG since classList is not supported on\n * SVG elements in IE\n */\nfunction addClass (el, cls) {\n /* istanbul ignore if */\n if (!cls || !(cls = cls.trim())) {\n return\n }\n\n /* istanbul ignore else */\n if (el.classList) {\n if (cls.indexOf(' ') > -1) {\n cls.split(whitespaceRE).forEach(function (c) { return el.classList.add(c); });\n } else {\n el.classList.add(cls);\n }\n } else {\n var cur = \" \" + (el.getAttribute('class') || '') + \" \";\n if (cur.indexOf(' ' + cls + ' ') < 0) {\n el.setAttribute('class', (cur + cls).trim());\n }\n }\n}\n\n/**\n * Remove class with compatibility for SVG since classList is not supported on\n * SVG elements in IE\n */\nfunction removeClass (el, cls) {\n /* istanbul ignore if */\n if (!cls || !(cls = cls.trim())) {\n return\n }\n\n /* istanbul ignore else */\n if (el.classList) {\n if (cls.indexOf(' ') > -1) {\n cls.split(whitespaceRE).forEach(function (c) { return el.classList.remove(c); });\n } else {\n el.classList.remove(cls);\n }\n if (!el.classList.length) {\n el.removeAttribute('class');\n }\n } else {\n var cur = \" \" + (el.getAttribute('class') || '') + \" \";\n var tar = ' ' + cls + ' ';\n while (cur.indexOf(tar) >= 0) {\n cur = cur.replace(tar, ' ');\n }\n cur = cur.trim();\n if (cur) {\n el.setAttribute('class', cur);\n } else {\n el.removeAttribute('class');\n }\n }\n}\n\n/* */\n\nfunction resolveTransition (def$$1) {\n if (!def$$1) {\n return\n }\n /* istanbul ignore else */\n if (typeof def$$1 === 'object') {\n var res = {};\n if (def$$1.css !== false) {\n extend(res, autoCssTransition(def$$1.name || 'v'));\n }\n extend(res, def$$1);\n return res\n } else if (typeof def$$1 === 'string') {\n return autoCssTransition(def$$1)\n }\n}\n\nvar autoCssTransition = cached(function (name) {\n return {\n enterClass: (name + \"-enter\"),\n enterToClass: (name + \"-enter-to\"),\n enterActiveClass: (name + \"-enter-active\"),\n leaveClass: (name + \"-leave\"),\n leaveToClass: (name + \"-leave-to\"),\n leaveActiveClass: (name + \"-leave-active\")\n }\n});\n\nvar hasTransition = inBrowser && !isIE9;\nvar TRANSITION = 'transition';\nvar ANIMATION = 'animation';\n\n// Transition property/event sniffing\nvar transitionProp = 'transition';\nvar transitionEndEvent = 'transitionend';\nvar animationProp = 'animation';\nvar animationEndEvent = 'animationend';\nif (hasTransition) {\n /* istanbul ignore if */\n if (window.ontransitionend === undefined &&\n window.onwebkittransitionend !== undefined\n ) {\n transitionProp = 'WebkitTransition';\n transitionEndEvent = 'webkitTransitionEnd';\n }\n if (window.onanimationend === undefined &&\n window.onwebkitanimationend !== undefined\n ) {\n animationProp = 'WebkitAnimation';\n animationEndEvent = 'webkitAnimationEnd';\n }\n}\n\n// binding to window is necessary to make hot reload work in IE in strict mode\nvar raf = inBrowser\n ? window.requestAnimationFrame\n ? window.requestAnimationFrame.bind(window)\n : setTimeout\n : /* istanbul ignore next */ function (fn) { return fn(); };\n\nfunction nextFrame (fn) {\n raf(function () {\n raf(fn);\n });\n}\n\nfunction addTransitionClass (el, cls) {\n var transitionClasses = el._transitionClasses || (el._transitionClasses = []);\n if (transitionClasses.indexOf(cls) < 0) {\n transitionClasses.push(cls);\n addClass(el, cls);\n }\n}\n\nfunction removeTransitionClass (el, cls) {\n if (el._transitionClasses) {\n remove(el._transitionClasses, cls);\n }\n removeClass(el, cls);\n}\n\nfunction whenTransitionEnds (\n el,\n expectedType,\n cb\n) {\n var ref = getTransitionInfo(el, expectedType);\n var type = ref.type;\n var timeout = ref.timeout;\n var propCount = ref.propCount;\n if (!type) { return cb() }\n var event = type === TRANSITION ? transitionEndEvent : animationEndEvent;\n var ended = 0;\n var end = function () {\n el.removeEventListener(event, onEnd);\n cb();\n };\n var onEnd = function (e) {\n if (e.target === el) {\n if (++ended >= propCount) {\n end();\n }\n }\n };\n setTimeout(function () {\n if (ended < propCount) {\n end();\n }\n }, timeout + 1);\n el.addEventListener(event, onEnd);\n}\n\nvar transformRE = /\\b(transform|all)(,|$)/;\n\nfunction getTransitionInfo (el, expectedType) {\n var styles = window.getComputedStyle(el);\n // JSDOM may return undefined for transition properties\n var transitionDelays = (styles[transitionProp + 'Delay'] || '').split(', ');\n var transitionDurations = (styles[transitionProp + 'Duration'] || '').split(', ');\n var transitionTimeout = getTimeout(transitionDelays, transitionDurations);\n var animationDelays = (styles[animationProp + 'Delay'] || '').split(', ');\n var animationDurations = (styles[animationProp + 'Duration'] || '').split(', ');\n var animationTimeout = getTimeout(animationDelays, animationDurations);\n\n var type;\n var timeout = 0;\n var propCount = 0;\n /* istanbul ignore if */\n if (expectedType === TRANSITION) {\n if (transitionTimeout > 0) {\n type = TRANSITION;\n timeout = transitionTimeout;\n propCount = transitionDurations.length;\n }\n } else if (expectedType === ANIMATION) {\n if (animationTimeout > 0) {\n type = ANIMATION;\n timeout = animationTimeout;\n propCount = animationDurations.length;\n }\n } else {\n timeout = Math.max(transitionTimeout, animationTimeout);\n type = timeout > 0\n ? transitionTimeout > animationTimeout\n ? TRANSITION\n : ANIMATION\n : null;\n propCount = type\n ? type === TRANSITION\n ? transitionDurations.length\n : animationDurations.length\n : 0;\n }\n var hasTransform =\n type === TRANSITION &&\n transformRE.test(styles[transitionProp + 'Property']);\n return {\n type: type,\n timeout: timeout,\n propCount: propCount,\n hasTransform: hasTransform\n }\n}\n\nfunction getTimeout (delays, durations) {\n /* istanbul ignore next */\n while (delays.length < durations.length) {\n delays = delays.concat(delays);\n }\n\n return Math.max.apply(null, durations.map(function (d, i) {\n return toMs(d) + toMs(delays[i])\n }))\n}\n\n// Old versions of Chromium (below 61.0.3163.100) formats floating pointer numbers\n// in a locale-dependent way, using a comma instead of a dot.\n// If comma is not replaced with a dot, the input will be rounded down (i.e. acting\n// as a floor function) causing unexpected behaviors\nfunction toMs (s) {\n return Number(s.slice(0, -1).replace(',', '.')) * 1000\n}\n\n/* */\n\nfunction enter (vnode, toggleDisplay) {\n var el = vnode.elm;\n\n // call leave callback now\n if (isDef(el._leaveCb)) {\n el._leaveCb.cancelled = true;\n el._leaveCb();\n }\n\n var data = resolveTransition(vnode.data.transition);\n if (isUndef(data)) {\n return\n }\n\n /* istanbul ignore if */\n if (isDef(el._enterCb) || el.nodeType !== 1) {\n return\n }\n\n var css = data.css;\n var type = data.type;\n var enterClass = data.enterClass;\n var enterToClass = data.enterToClass;\n var enterActiveClass = data.enterActiveClass;\n var appearClass = data.appearClass;\n var appearToClass = data.appearToClass;\n var appearActiveClass = data.appearActiveClass;\n var beforeEnter = data.beforeEnter;\n var enter = data.enter;\n var afterEnter = data.afterEnter;\n var enterCancelled = data.enterCancelled;\n var beforeAppear = data.beforeAppear;\n var appear = data.appear;\n var afterAppear = data.afterAppear;\n var appearCancelled = data.appearCancelled;\n var duration = data.duration;\n\n // activeInstance will always be the <transition> component managing this\n // transition. One edge case to check is when the <transition> is placed\n // as the root node of a child component. In that case we need to check\n // <transition>'s parent for appear check.\n var context = activeInstance;\n var transitionNode = activeInstance.$vnode;\n while (transitionNode && transitionNode.parent) {\n context = transitionNode.context;\n transitionNode = transitionNode.parent;\n }\n\n var isAppear = !context._isMounted || !vnode.isRootInsert;\n\n if (isAppear && !appear && appear !== '') {\n return\n }\n\n var startClass = isAppear && appearClass\n ? appearClass\n : enterClass;\n var activeClass = isAppear && appearActiveClass\n ? appearActiveClass\n : enterActiveClass;\n var toClass = isAppear && appearToClass\n ? appearToClass\n : enterToClass;\n\n var beforeEnterHook = isAppear\n ? (beforeAppear || beforeEnter)\n : beforeEnter;\n var enterHook = isAppear\n ? (typeof appear === 'function' ? appear : enter)\n : enter;\n var afterEnterHook = isAppear\n ? (afterAppear || afterEnter)\n : afterEnter;\n var enterCancelledHook = isAppear\n ? (appearCancelled || enterCancelled)\n : enterCancelled;\n\n var explicitEnterDuration = toNumber(\n isObject(duration)\n ? duration.enter\n : duration\n );\n\n if (process.env.NODE_ENV !== 'production' && explicitEnterDuration != null) {\n checkDuration(explicitEnterDuration, 'enter', vnode);\n }\n\n var expectsCSS = css !== false && !isIE9;\n var userWantsControl = getHookArgumentsLength(enterHook);\n\n var cb = el._enterCb = once(function () {\n if (expectsCSS) {\n removeTransitionClass(el, toClass);\n removeTransitionClass(el, activeClass);\n }\n if (cb.cancelled) {\n if (expectsCSS) {\n removeTransitionClass(el, startClass);\n }\n enterCancelledHook && enterCancelledHook(el);\n } else {\n afterEnterHook && afterEnterHook(el);\n }\n el._enterCb = null;\n });\n\n if (!vnode.data.show) {\n // remove pending leave element on enter by injecting an insert hook\n mergeVNodeHook(vnode, 'insert', function () {\n var parent = el.parentNode;\n var pendingNode = parent && parent._pending && parent._pending[vnode.key];\n if (pendingNode &&\n pendingNode.tag === vnode.tag &&\n pendingNode.elm._leaveCb\n ) {\n pendingNode.elm._leaveCb();\n }\n enterHook && enterHook(el, cb);\n });\n }\n\n // start enter transition\n beforeEnterHook && beforeEnterHook(el);\n if (expectsCSS) {\n addTransitionClass(el, startClass);\n addTransitionClass(el, activeClass);\n nextFrame(function () {\n removeTransitionClass(el, startClass);\n if (!cb.cancelled) {\n addTransitionClass(el, toClass);\n if (!userWantsControl) {\n if (isValidDuration(explicitEnterDuration)) {\n setTimeout(cb, explicitEnterDuration);\n } else {\n whenTransitionEnds(el, type, cb);\n }\n }\n }\n });\n }\n\n if (vnode.data.show) {\n toggleDisplay && toggleDisplay();\n enterHook && enterHook(el, cb);\n }\n\n if (!expectsCSS && !userWantsControl) {\n cb();\n }\n}\n\nfunction leave (vnode, rm) {\n var el = vnode.elm;\n\n // call enter callback now\n if (isDef(el._enterCb)) {\n el._enterCb.cancelled = true;\n el._enterCb();\n }\n\n var data = resolveTransition(vnode.data.transition);\n if (isUndef(data) || el.nodeType !== 1) {\n return rm()\n }\n\n /* istanbul ignore if */\n if (isDef(el._leaveCb)) {\n return\n }\n\n var css = data.css;\n var type = data.type;\n var leaveClass = data.leaveClass;\n var leaveToClass = data.leaveToClass;\n var leaveActiveClass = data.leaveActiveClass;\n var beforeLeave = data.beforeLeave;\n var leave = data.leave;\n var afterLeave = data.afterLeave;\n var leaveCancelled = data.leaveCancelled;\n var delayLeave = data.delayLeave;\n var duration = data.duration;\n\n var expectsCSS = css !== false && !isIE9;\n var userWantsControl = getHookArgumentsLength(leave);\n\n var explicitLeaveDuration = toNumber(\n isObject(duration)\n ? duration.leave\n : duration\n );\n\n if (process.env.NODE_ENV !== 'production' && isDef(explicitLeaveDuration)) {\n checkDuration(explicitLeaveDuration, 'leave', vnode);\n }\n\n var cb = el._leaveCb = once(function () {\n if (el.parentNode && el.parentNode._pending) {\n el.parentNode._pending[vnode.key] = null;\n }\n if (expectsCSS) {\n removeTransitionClass(el, leaveToClass);\n removeTransitionClass(el, leaveActiveClass);\n }\n if (cb.cancelled) {\n if (expectsCSS) {\n removeTransitionClass(el, leaveClass);\n }\n leaveCancelled && leaveCancelled(el);\n } else {\n rm();\n afterLeave && afterLeave(el);\n }\n el._leaveCb = null;\n });\n\n if (delayLeave) {\n delayLeave(performLeave);\n } else {\n performLeave();\n }\n\n function performLeave () {\n // the delayed leave may have already been cancelled\n if (cb.cancelled) {\n return\n }\n // record leaving element\n if (!vnode.data.show && el.parentNode) {\n (el.parentNode._pending || (el.parentNode._pending = {}))[(vnode.key)] = vnode;\n }\n beforeLeave && beforeLeave(el);\n if (expectsCSS) {\n addTransitionClass(el, leaveClass);\n addTransitionClass(el, leaveActiveClass);\n nextFrame(function () {\n removeTransitionClass(el, leaveClass);\n if (!cb.cancelled) {\n addTransitionClass(el, leaveToClass);\n if (!userWantsControl) {\n if (isValidDuration(explicitLeaveDuration)) {\n setTimeout(cb, explicitLeaveDuration);\n } else {\n whenTransitionEnds(el, type, cb);\n }\n }\n }\n });\n }\n leave && leave(el, cb);\n if (!expectsCSS && !userWantsControl) {\n cb();\n }\n }\n}\n\n// only used in dev mode\nfunction checkDuration (val, name, vnode) {\n if (typeof val !== 'number') {\n warn(\n \"<transition> explicit \" + name + \" duration is not a valid number - \" +\n \"got \" + (JSON.stringify(val)) + \".\",\n vnode.context\n );\n } else if (isNaN(val)) {\n warn(\n \"<transition> explicit \" + name + \" duration is NaN - \" +\n 'the duration expression might be incorrect.',\n vnode.context\n );\n }\n}\n\nfunction isValidDuration (val) {\n return typeof val === 'number' && !isNaN(val)\n}\n\n/**\n * Normalize a transition hook's argument length. The hook may be:\n * - a merged hook (invoker) with the original in .fns\n * - a wrapped component method (check ._length)\n * - a plain function (.length)\n */\nfunction getHookArgumentsLength (fn) {\n if (isUndef(fn)) {\n return false\n }\n var invokerFns = fn.fns;\n if (isDef(invokerFns)) {\n // invoker\n return getHookArgumentsLength(\n Array.isArray(invokerFns)\n ? invokerFns[0]\n : invokerFns\n )\n } else {\n return (fn._length || fn.length) > 1\n }\n}\n\nfunction _enter (_, vnode) {\n if (vnode.data.show !== true) {\n enter(vnode);\n }\n}\n\nvar transition = inBrowser ? {\n create: _enter,\n activate: _enter,\n remove: function remove$$1 (vnode, rm) {\n /* istanbul ignore else */\n if (vnode.data.show !== true) {\n leave(vnode, rm);\n } else {\n rm();\n }\n }\n} : {};\n\nvar platformModules = [\n attrs,\n klass,\n events,\n domProps,\n style,\n transition\n];\n\n/* */\n\n// the directive module should be applied last, after all\n// built-in modules have been applied.\nvar modules = platformModules.concat(baseModules);\n\nvar patch = createPatchFunction({ nodeOps: nodeOps, modules: modules });\n\n/**\n * Not type checking this file because flow doesn't like attaching\n * properties to Elements.\n */\n\n/* istanbul ignore if */\nif (isIE9) {\n // http://www.matts411.com/post/internet-explorer-9-oninput/\n document.addEventListener('selectionchange', function () {\n var el = document.activeElement;\n if (el && el.vmodel) {\n trigger(el, 'input');\n }\n });\n}\n\nvar directive = {\n inserted: function inserted (el, binding, vnode, oldVnode) {\n if (vnode.tag === 'select') {\n // #6903\n if (oldVnode.elm && !oldVnode.elm._vOptions) {\n mergeVNodeHook(vnode, 'postpatch', function () {\n directive.componentUpdated(el, binding, vnode);\n });\n } else {\n setSelected(el, binding, vnode.context);\n }\n el._vOptions = [].map.call(el.options, getValue);\n } else if (vnode.tag === 'textarea' || isTextInputType(el.type)) {\n el._vModifiers = binding.modifiers;\n if (!binding.modifiers.lazy) {\n el.addEventListener('compositionstart', onCompositionStart);\n el.addEventListener('compositionend', onCompositionEnd);\n // Safari < 10.2 & UIWebView doesn't fire compositionend when\n // switching focus before confirming composition choice\n // this also fixes the issue where some browsers e.g. iOS Chrome\n // fires \"change\" instead of \"input\" on autocomplete.\n el.addEventListener('change', onCompositionEnd);\n /* istanbul ignore if */\n if (isIE9) {\n el.vmodel = true;\n }\n }\n }\n },\n\n componentUpdated: function componentUpdated (el, binding, vnode) {\n if (vnode.tag === 'select') {\n setSelected(el, binding, vnode.context);\n // in case the options rendered by v-for have changed,\n // it's possible that the value is out-of-sync with the rendered options.\n // detect such cases and filter out values that no longer has a matching\n // option in the DOM.\n var prevOptions = el._vOptions;\n var curOptions = el._vOptions = [].map.call(el.options, getValue);\n if (curOptions.some(function (o, i) { return !looseEqual(o, prevOptions[i]); })) {\n // trigger change event if\n // no matching option found for at least one value\n var needReset = el.multiple\n ? binding.value.some(function (v) { return hasNoMatchingOption(v, curOptions); })\n : binding.value !== binding.oldValue && hasNoMatchingOption(binding.value, curOptions);\n if (needReset) {\n trigger(el, 'change');\n }\n }\n }\n }\n};\n\nfunction setSelected (el, binding, vm) {\n actuallySetSelected(el, binding, vm);\n /* istanbul ignore if */\n if (isIE || isEdge) {\n setTimeout(function () {\n actuallySetSelected(el, binding, vm);\n }, 0);\n }\n}\n\nfunction actuallySetSelected (el, binding, vm) {\n var value = binding.value;\n var isMultiple = el.multiple;\n if (isMultiple && !Array.isArray(value)) {\n process.env.NODE_ENV !== 'production' && warn(\n \"<select multiple v-model=\\\"\" + (binding.expression) + \"\\\"> \" +\n \"expects an Array value for its binding, but got \" + (Object.prototype.toString.call(value).slice(8, -1)),\n vm\n );\n return\n }\n var selected, option;\n for (var i = 0, l = el.options.length; i < l; i++) {\n option = el.options[i];\n if (isMultiple) {\n selected = looseIndexOf(value, getValue(option)) > -1;\n if (option.selected !== selected) {\n option.selected = selected;\n }\n } else {\n if (looseEqual(getValue(option), value)) {\n if (el.selectedIndex !== i) {\n el.selectedIndex = i;\n }\n return\n }\n }\n }\n if (!isMultiple) {\n el.selectedIndex = -1;\n }\n}\n\nfunction hasNoMatchingOption (value, options) {\n return options.every(function (o) { return !looseEqual(o, value); })\n}\n\nfunction getValue (option) {\n return '_value' in option\n ? option._value\n : option.value\n}\n\nfunction onCompositionStart (e) {\n e.target.composing = true;\n}\n\nfunction onCompositionEnd (e) {\n // prevent triggering an input event for no reason\n if (!e.target.composing) { return }\n e.target.composing = false;\n trigger(e.target, 'input');\n}\n\nfunction trigger (el, type) {\n var e = document.createEvent('HTMLEvents');\n e.initEvent(type, true, true);\n el.dispatchEvent(e);\n}\n\n/* */\n\n// recursively search for possible transition defined inside the component root\nfunction locateNode (vnode) {\n return vnode.componentInstance && (!vnode.data || !vnode.data.transition)\n ? locateNode(vnode.componentInstance._vnode)\n : vnode\n}\n\nvar show = {\n bind: function bind (el, ref, vnode) {\n var value = ref.value;\n\n vnode = locateNode(vnode);\n var transition$$1 = vnode.data && vnode.data.transition;\n var originalDisplay = el.__vOriginalDisplay =\n el.style.display === 'none' ? '' : el.style.display;\n if (value && transition$$1) {\n vnode.data.show = true;\n enter(vnode, function () {\n el.style.display = originalDisplay;\n });\n } else {\n el.style.display = value ? originalDisplay : 'none';\n }\n },\n\n update: function update (el, ref, vnode) {\n var value = ref.value;\n var oldValue = ref.oldValue;\n\n /* istanbul ignore if */\n if (!value === !oldValue) { return }\n vnode = locateNode(vnode);\n var transition$$1 = vnode.data && vnode.data.transition;\n if (transition$$1) {\n vnode.data.show = true;\n if (value) {\n enter(vnode, function () {\n el.style.display = el.__vOriginalDisplay;\n });\n } else {\n leave(vnode, function () {\n el.style.display = 'none';\n });\n }\n } else {\n el.style.display = value ? el.__vOriginalDisplay : 'none';\n }\n },\n\n unbind: function unbind (\n el,\n binding,\n vnode,\n oldVnode,\n isDestroy\n ) {\n if (!isDestroy) {\n el.style.display = el.__vOriginalDisplay;\n }\n }\n};\n\nvar platformDirectives = {\n model: directive,\n show: show\n};\n\n/* */\n\nvar transitionProps = {\n name: String,\n appear: Boolean,\n css: Boolean,\n mode: String,\n type: String,\n enterClass: String,\n leaveClass: String,\n enterToClass: String,\n leaveToClass: String,\n enterActiveClass: String,\n leaveActiveClass: String,\n appearClass: String,\n appearActiveClass: String,\n appearToClass: String,\n duration: [Number, String, Object]\n};\n\n// in case the child is also an abstract component, e.g. <keep-alive>\n// we want to recursively retrieve the real component to be rendered\nfunction getRealChild (vnode) {\n var compOptions = vnode && vnode.componentOptions;\n if (compOptions && compOptions.Ctor.options.abstract) {\n return getRealChild(getFirstComponentChild(compOptions.children))\n } else {\n return vnode\n }\n}\n\nfunction extractTransitionData (comp) {\n var data = {};\n var options = comp.$options;\n // props\n for (var key in options.propsData) {\n data[key] = comp[key];\n }\n // events.\n // extract listeners and pass them directly to the transition methods\n var listeners = options._parentListeners;\n for (var key$1 in listeners) {\n data[camelize(key$1)] = listeners[key$1];\n }\n return data\n}\n\nfunction placeholder (h, rawChild) {\n if (/\\d-keep-alive$/.test(rawChild.tag)) {\n return h('keep-alive', {\n props: rawChild.componentOptions.propsData\n })\n }\n}\n\nfunction hasParentTransition (vnode) {\n while ((vnode = vnode.parent)) {\n if (vnode.data.transition) {\n return true\n }\n }\n}\n\nfunction isSameChild (child, oldChild) {\n return oldChild.key === child.key && oldChild.tag === child.tag\n}\n\nvar isNotTextNode = function (c) { return c.tag || isAsyncPlaceholder(c); };\n\nvar isVShowDirective = function (d) { return d.name === 'show'; };\n\nvar Transition = {\n name: 'transition',\n props: transitionProps,\n abstract: true,\n\n render: function render (h) {\n var this$1 = this;\n\n var children = this.$slots.default;\n if (!children) {\n return\n }\n\n // filter out text nodes (possible whitespaces)\n children = children.filter(isNotTextNode);\n /* istanbul ignore if */\n if (!children.length) {\n return\n }\n\n // warn multiple elements\n if (process.env.NODE_ENV !== 'production' && children.length > 1) {\n warn(\n '<transition> can only be used on a single element. Use ' +\n '<transition-group> for lists.',\n this.$parent\n );\n }\n\n var mode = this.mode;\n\n // warn invalid mode\n if (process.env.NODE_ENV !== 'production' &&\n mode && mode !== 'in-out' && mode !== 'out-in'\n ) {\n warn(\n 'invalid <transition> mode: ' + mode,\n this.$parent\n );\n }\n\n var rawChild = children[0];\n\n // if this is a component root node and the component's\n // parent container node also has transition, skip.\n if (hasParentTransition(this.$vnode)) {\n return rawChild\n }\n\n // apply transition data to child\n // use getRealChild() to ignore abstract components e.g. keep-alive\n var child = getRealChild(rawChild);\n /* istanbul ignore if */\n if (!child) {\n return rawChild\n }\n\n if (this._leaving) {\n return placeholder(h, rawChild)\n }\n\n // ensure a key that is unique to the vnode type and to this transition\n // component instance. This key will be used to remove pending leaving nodes\n // during entering.\n var id = \"__transition-\" + (this._uid) + \"-\";\n child.key = child.key == null\n ? child.isComment\n ? id + 'comment'\n : id + child.tag\n : isPrimitive(child.key)\n ? (String(child.key).indexOf(id) === 0 ? child.key : id + child.key)\n : child.key;\n\n var data = (child.data || (child.data = {})).transition = extractTransitionData(this);\n var oldRawChild = this._vnode;\n var oldChild = getRealChild(oldRawChild);\n\n // mark v-show\n // so that the transition module can hand over the control to the directive\n if (child.data.directives && child.data.directives.some(isVShowDirective)) {\n child.data.show = true;\n }\n\n if (\n oldChild &&\n oldChild.data &&\n !isSameChild(child, oldChild) &&\n !isAsyncPlaceholder(oldChild) &&\n // #6687 component root is a comment node\n !(oldChild.componentInstance && oldChild.componentInstance._vnode.isComment)\n ) {\n // replace old child transition data with fresh one\n // important for dynamic transitions!\n var oldData = oldChild.data.transition = extend({}, data);\n // handle transition mode\n if (mode === 'out-in') {\n // return placeholder node and queue update when leave finishes\n this._leaving = true;\n mergeVNodeHook(oldData, 'afterLeave', function () {\n this$1._leaving = false;\n this$1.$forceUpdate();\n });\n return placeholder(h, rawChild)\n } else if (mode === 'in-out') {\n if (isAsyncPlaceholder(child)) {\n return oldRawChild\n }\n var delayedLeave;\n var performLeave = function () { delayedLeave(); };\n mergeVNodeHook(data, 'afterEnter', performLeave);\n mergeVNodeHook(data, 'enterCancelled', performLeave);\n mergeVNodeHook(oldData, 'delayLeave', function (leave) { delayedLeave = leave; });\n }\n }\n\n return rawChild\n }\n};\n\n/* */\n\nvar props = extend({\n tag: String,\n moveClass: String\n}, transitionProps);\n\ndelete props.mode;\n\nvar TransitionGroup = {\n props: props,\n\n beforeMount: function beforeMount () {\n var this$1 = this;\n\n var update = this._update;\n this._update = function (vnode, hydrating) {\n var restoreActiveInstance = setActiveInstance(this$1);\n // force removing pass\n this$1.__patch__(\n this$1._vnode,\n this$1.kept,\n false, // hydrating\n true // removeOnly (!important, avoids unnecessary moves)\n );\n this$1._vnode = this$1.kept;\n restoreActiveInstance();\n update.call(this$1, vnode, hydrating);\n };\n },\n\n render: function render (h) {\n var tag = this.tag || this.$vnode.data.tag || 'span';\n var map = Object.create(null);\n var prevChildren = this.prevChildren = this.children;\n var rawChildren = this.$slots.default || [];\n var children = this.children = [];\n var transitionData = extractTransitionData(this);\n\n for (var i = 0; i < rawChildren.length; i++) {\n var c = rawChildren[i];\n if (c.tag) {\n if (c.key != null && String(c.key).indexOf('__vlist') !== 0) {\n children.push(c);\n map[c.key] = c\n ;(c.data || (c.data = {})).transition = transitionData;\n } else if (process.env.NODE_ENV !== 'production') {\n var opts = c.componentOptions;\n var name = opts ? (opts.Ctor.options.name || opts.tag || '') : c.tag;\n warn((\"<transition-group> children must be keyed: <\" + name + \">\"));\n }\n }\n }\n\n if (prevChildren) {\n var kept = [];\n var removed = [];\n for (var i$1 = 0; i$1 < prevChildren.length; i$1++) {\n var c$1 = prevChildren[i$1];\n c$1.data.transition = transitionData;\n c$1.data.pos = c$1.elm.getBoundingClientRect();\n if (map[c$1.key]) {\n kept.push(c$1);\n } else {\n removed.push(c$1);\n }\n }\n this.kept = h(tag, null, kept);\n this.removed = removed;\n }\n\n return h(tag, null, children)\n },\n\n updated: function updated () {\n var children = this.prevChildren;\n var moveClass = this.moveClass || ((this.name || 'v') + '-move');\n if (!children.length || !this.hasMove(children[0].elm, moveClass)) {\n return\n }\n\n // we divide the work into three loops to avoid mixing DOM reads and writes\n // in each iteration - which helps prevent layout thrashing.\n children.forEach(callPendingCbs);\n children.forEach(recordPosition);\n children.forEach(applyTranslation);\n\n // force reflow to put everything in position\n // assign to this to avoid being removed in tree-shaking\n // $flow-disable-line\n this._reflow = document.body.offsetHeight;\n\n children.forEach(function (c) {\n if (c.data.moved) {\n var el = c.elm;\n var s = el.style;\n addTransitionClass(el, moveClass);\n s.transform = s.WebkitTransform = s.transitionDuration = '';\n el.addEventListener(transitionEndEvent, el._moveCb = function cb (e) {\n if (e && e.target !== el) {\n return\n }\n if (!e || /transform$/.test(e.propertyName)) {\n el.removeEventListener(transitionEndEvent, cb);\n el._moveCb = null;\n removeTransitionClass(el, moveClass);\n }\n });\n }\n });\n },\n\n methods: {\n hasMove: function hasMove (el, moveClass) {\n /* istanbul ignore if */\n if (!hasTransition) {\n return false\n }\n /* istanbul ignore if */\n if (this._hasMove) {\n return this._hasMove\n }\n // Detect whether an element with the move class applied has\n // CSS transitions. Since the element may be inside an entering\n // transition at this very moment, we make a clone of it and remove\n // all other transition classes applied to ensure only the move class\n // is applied.\n var clone = el.cloneNode();\n if (el._transitionClasses) {\n el._transitionClasses.forEach(function (cls) { removeClass(clone, cls); });\n }\n addClass(clone, moveClass);\n clone.style.display = 'none';\n this.$el.appendChild(clone);\n var info = getTransitionInfo(clone);\n this.$el.removeChild(clone);\n return (this._hasMove = info.hasTransform)\n }\n }\n};\n\nfunction callPendingCbs (c) {\n /* istanbul ignore if */\n if (c.elm._moveCb) {\n c.elm._moveCb();\n }\n /* istanbul ignore if */\n if (c.elm._enterCb) {\n c.elm._enterCb();\n }\n}\n\nfunction recordPosition (c) {\n c.data.newPos = c.elm.getBoundingClientRect();\n}\n\nfunction applyTranslation (c) {\n var oldPos = c.data.pos;\n var newPos = c.data.newPos;\n var dx = oldPos.left - newPos.left;\n var dy = oldPos.top - newPos.top;\n if (dx || dy) {\n c.data.moved = true;\n var s = c.elm.style;\n s.transform = s.WebkitTransform = \"translate(\" + dx + \"px,\" + dy + \"px)\";\n s.transitionDuration = '0s';\n }\n}\n\nvar platformComponents = {\n Transition: Transition,\n TransitionGroup: TransitionGroup\n};\n\n/* */\n\n// install platform specific utils\nVue.config.mustUseProp = mustUseProp;\nVue.config.isReservedTag = isReservedTag;\nVue.config.isReservedAttr = isReservedAttr;\nVue.config.getTagNamespace = getTagNamespace;\nVue.config.isUnknownElement = isUnknownElement;\n\n// install platform runtime directives & components\nextend(Vue.options.directives, platformDirectives);\nextend(Vue.options.components, platformComponents);\n\n// install platform patch function\nVue.prototype.__patch__ = inBrowser ? patch : noop;\n\n// public mount method\nVue.prototype.$mount = function (\n el,\n hydrating\n) {\n el = el && inBrowser ? query(el) : undefined;\n return mountComponent(this, el, hydrating)\n};\n\n// devtools global hook\n/* istanbul ignore next */\nif (inBrowser) {\n setTimeout(function () {\n if (config.devtools) {\n if (devtools) {\n devtools.emit('init', Vue);\n } else if (\n process.env.NODE_ENV !== 'production' &&\n process.env.NODE_ENV !== 'test'\n ) {\n console[console.info ? 'info' : 'log'](\n 'Download the Vue Devtools extension for a better development experience:\\n' +\n 'https://github.com/vuejs/vue-devtools'\n );\n }\n }\n if (process.env.NODE_ENV !== 'production' &&\n process.env.NODE_ENV !== 'test' &&\n config.productionTip !== false &&\n typeof console !== 'undefined'\n ) {\n console[console.info ? 'info' : 'log'](\n \"You are running Vue in development mode.\\n\" +\n \"Make sure to turn on production mode when deploying for production.\\n\" +\n \"See more tips at https://vuejs.org/guide/deployment.html\"\n );\n }\n }, 0);\n}\n\n/* */\n\nexport default Vue;\n"]},"metadata":{},"sourceType":"module"} |