vue-js

/*!

Vue.js v2.5.16
(c) 2014-2018 Evan You
Released under the MIT License. */ (function (global, factory) { typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : typeof define === 'function' && define.amd ? define(factory) : (global.Vue = factory()); }(this, (function () { 'use strict';

/* */

var emptyObject = Object.freeze({});

// these helpers produces better vm code in JS engines due to their // explicitness and function inlining function isUndef (v) { return v === undefined || v === null }

function isDef (v) { return v !== undefined && v !== null }

function isTrue (v) { return v === true }

function isFalse (v) { return v === false }

/**

Check if value is primitive */ function isPrimitive (value) { return ( typeof value === 'string' || typeof value === 'number' || // $flow-disable-line typeof value === 'symbol' || typeof value === 'boolean' ) }

/**

Quick object check - this is primarily used to tell
Objects from primitive values when we know the value
is a JSON-compliant type. */ function isObject (obj) { return obj !== null && typeof obj === 'object' }

/**

Get the raw type string of a value e.g. [object Object] */ var _toString = Object.prototype.toString;

function toRawType (value) { return _toString.call(value).slice(8, -1) }

/**

Strict object type check. Only returns true
for plain JavaScript objects. */ function isPlainObject (obj) { return _toString.call(obj) === '[object Object]' }

function isRegExp (v) { return _toString.call(v) === '[object RegExp]' }

/**

Check if val is a valid array index. */ function isValidArrayIndex (val) { var n = parseFloat(String(val)); return n >= 0 && Math.floor(n) === n && isFinite(val) }

/**

Convert a value to a string that is actually rendered. */ function toString (val) { return val == null ? '' : typeof val === 'object' ? JSON.stringify(val, null, 2) : String(val) }

/**

Convert a input value to a number for persistence.
If the conversion fails, return original string. */ function toNumber (val) { var n = parseFloat(val); return isNaN(n) ? val : n }

/**

Make a map and return a function for checking if a key
is in that map. */ function makeMap ( str, expectsLowerCase ) { var map = Object.create(null); var list = str.split(','); for (var i = 0; i < list.length; i++) { map[list[i]] = true; } return expectsLowerCase ? function (val) { return map[val.toLowerCase()]; } : function (val) { return map[val]; } }

/**

Check if a tag is a built-in tag. */ var isBuiltInTag = makeMap('slot,component', true);

/**

Check if a attribute is a reserved attribute. */ var isReservedAttribute = makeMap('key,ref,slot,slot-scope,is');

/**

Remove an item from an array */ function remove (arr, item) { if (arr.length) { var index = arr.indexOf(item); if (index > -1) { return arr.splice(index, 1) } } }

/**

Check whether the object has the property. */ var hasOwnProperty = Object.prototype.hasOwnProperty; function hasOwn (obj, key) { return hasOwnProperty.call(obj, key) }

/**

Create a cached version of a pure function. */ function cached (fn) { var cache = Object.create(null); return (function cachedFn (str) { var hit = cache[str]; return hit || (cache[str] = fn(str)) }) }

/**

Camelize a hyphen-delimited string. */ var camelizeRE = /-(\w)/g; var camelize = cached(function (str) { return str.replace(camelizeRE, function (_, c) { return c ? c.toUpperCase() : ''; }) });

/**

Capitalize a string. */ var capitalize = cached(function (str) { return str.charAt(0).toUpperCase() + str.slice(1) });

/**

Hyphenate a camelCase string. */ var hyphenateRE = /\B([A-Z])/g; var hyphenate = cached(function (str) { return str.replace(hyphenateRE, '-$1').toLowerCase() });

/**

Simple bind polyfill for environments that do not support it... e.g.
PhantomJS 1.x. Technically we don't need this anymore since native bind is
now more performant in most browsers, but removing it would be breaking for
code that was able to run in PhantomJS 1.x, so this must be kept for
backwards compatibility. */

/* istanbul ignore next */ function polyfillBind (fn, ctx) { function boundFn (a) { var l = arguments.length; return l ? l > 1 ? fn.apply(ctx, arguments) : fn.call(ctx, a) : fn.call(ctx) }

boundFn._length = fn.length; return boundFn }

function nativeBind (fn, ctx) { return fn.bind(ctx) }

var bind = Function.prototype.bind ? nativeBind : polyfillBind;

/**

Convert an Array-like object to a real Array. */ function toArray (list, start) { start = start || 0; var i = list.length - start; var ret = new Array(i); while (i--) { ret[i] = list[i + start]; } return ret }

/**

Mix properties into target object. */ function extend (to, _from) { for (var key in _from) { to[key] = _from[key]; } return to }

/**

Merge an Array of Objects into a single Object. */ function toObject (arr) { var res = {}; for (var i = 0; i < arr.length; i++) { if (arr[i]) { extend(res, arr[i]); } } return res }

/**

Perform no operation.
Stubbing args to make Flow happy without leaving useless transpiled code
with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/) */ function noop (a, b, c) {}

/**

Always return false. */ var no = function (a, b, c) { return false; };

/**

Return same value */ var identity = function (_) { return _; };

/**

Generate a static keys string from compiler modules. */ function genStaticKeys (modules) { return modules.reduce(function (keys, m) { return keys.concat(m.staticKeys || []) }, []).join(',') }

/**

Check if two values are loosely equal - that is,
if they are plain objects, do they have the same shape? / function looseEqual (a, b) { if (a === b) { return true } var isObjectA = isObject(a); var isObjectB = isObject(b); if (isObjectA && isObjectB) { try { var isArrayA = Array.isArray(a); var isArrayB = Array.isArray(b); if (isArrayA && isArrayB) { return a.length === b.length && a.every(function (e, i) { return looseEqual(e, b[i]) }) } else if (!isArrayA && !isArrayB) { var keysA = Object.keys(a); var keysB = Object.keys(b); return keysA.length === keysB.length && keysA.every(function (key) { return looseEqual(a[key], b[key]) }) } else { / istanbul ignore next / return false } } catch (e) { / istanbul ignore next */ return false } } else if (!isObjectA && !isObjectB) { return String(a) === String(b) } else { return false } }

function looseIndexOf (arr, val) { for (var i = 0; i < arr.length; i++) { if (looseEqual(arr[i], val)) { return i } } return -1 }

/**

Ensure a function is called only once. */ function once (fn) { var called = false; return function () { if (!called) { called = true; fn.apply(this, arguments); } } }

var SSR_ATTR = 'data-server-rendered';

var ASSET_TYPES = [ 'component', 'directive', 'filter' ];

var LIFECYCLE_HOOKS = [ 'beforeCreate', 'created', 'beforeMount', 'mounted', 'beforeUpdate', 'updated', 'beforeDestroy', 'destroyed', 'activated', 'deactivated', 'errorCaptured' ];

/* */

var config = ({ /**

Option merge strategies (used in core/util/options) */ // $flow-disable-line optionMergeStrategies: Object.create(null),

/**

Whether to suppress warnings. */ silent: false,

/**

Show production mode tip message on boot? */ productionTip: "development" !== 'production',

/**

Whether to enable devtools */ devtools: "development" !== 'production',

/**

Whether to record perf */ performance: false,

/**

Error handler for watcher errors */ errorHandler: null,

/**

Warn handler for watcher warns */ warnHandler: null,

/**

Ignore certain custom elements */ ignoredElements: [],

/**

Custom user key aliases for v-on */ // $flow-disable-line keyCodes: Object.create(null),

/**

Check if a tag is reserved so that it cannot be registered as a
component. This is platform-dependent and may be overwritten. */ isReservedTag: no,

/**

Check if an attribute is reserved so that it cannot be used as a component
prop. This is platform-dependent and may be overwritten. */ isReservedAttr: no,

/**

Check if a tag is an unknown element.
Platform-dependent. */ isUnknownElement: no,

/**

Get the namespace of an element */ getTagNamespace: noop,

/**

Parse the real tag name for the specific platform. */ parsePlatformTagName: identity,

/**

Check if an attribute must be bound using property, e.g. value
Platform-dependent. */ mustUseProp: no,

/**

Exposed for legacy reasons */ _lifecycleHooks: LIFECYCLE_HOOKS })

/* */

/**

Check if a string starts with $ or _ */ function isReserved (str) { var c = (str + '').charCodeAt(0); return c === 0x24 || c === 0x5F }

/**

Define a property. */ function def (obj, key, val, enumerable) { Object.defineProperty(obj, key, { value: val, enumerable: !!enumerable, writable: true, configurable: true }); }

/**

Parse simple path. */ var bailRE = /[^\w.$]/; function parsePath (path) { if (bailRE.test(path)) { return } var segments = path.split('.'); return function (obj) { for (var i = 0; i < segments.length; i++) { if (!obj) { return } obj = obj[segments[i]]; } return obj } }

/* */

// can we use proto? var hasProto = 'proto' in {};

// Browser environment sniffing var inBrowser = typeof window !== 'undefined'; var inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform; var weexPlatform = inWeex && WXEnvironment.platform.toLowerCase(); var UA = inBrowser && window.navigator.userAgent.toLowerCase(); var isIE = UA && /msie|trident/.test(UA); var isIE9 = UA && UA.indexOf('msie 9.0') > 0; var isEdge = UA && UA.indexOf('edge/') > 0; var isAndroid = (UA && UA.indexOf('android') > 0) || (weexPlatform === 'android'); var isIOS = (UA && /iphone|ipad|ipod|ios/.test(UA)) || (weexPlatform === 'ios'); var isChrome = UA && /chrome/\d+/.test(UA) && !isEdge;

// Firefox has a "watch" function on Object.prototype... var nativeWatch = ({}).watch;

var supportsPassive = false; if (inBrowser) { try { var opts = {}; Object.defineProperty(opts, 'passive', ({ get: function get () { /* istanbul ignore next */ supportsPassive = true; } })); // facebook/flow#285 window.addEventListener('test-passive', null, opts); } catch (e) {} }

// this needs to be lazy-evaled because vue may be required before // vue-server-renderer can set VUE_ENV var _isServer; var isServerRendering = function () { if (_isServer === undefined) { /* istanbul ignore if */ if (!inBrowser && !inWeex && typeof global !== 'undefined') { // detect presence of vue-server-renderer and avoid // Webpack shimming the process _isServer = global['process'].env.VUE_ENV === 'server'; } else { _isServer = false; } } return _isServer };

// detect devtools var devtools = inBrowser && window.VUE_DEVTOOLS_GLOBAL_HOOK;

/* istanbul ignore next */ function isNative (Ctor) { return typeof Ctor === 'function' && /native code/.test(Ctor.toString()) }

var hasSymbol = typeof Symbol !== 'undefined' && isNative(Symbol) && typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys);

var _Set; /* istanbul ignore if */ // $flow-disable-line if (typeof Set !== 'undefined' && isNative(Set)) { // use native Set when available. _Set = Set; } else { // a non-standard Set polyfill that only works with primitive keys. _Set = (function () { function Set () { this.set = Object.create(null); } Set.prototype.has = function has (key) { return this.set[key] === true }; Set.prototype.add = function add (key) { this.set[key] = true; }; Set.prototype.clear = function clear () { this.set = Object.create(null); };

return Set;

}()); }

/* */

var warn = noop; var tip = noop; var generateComponentTrace = (noop); // work around flow check var formatComponentName = (noop);

{ var hasConsole = typeof console !== 'undefined'; var classifyRE = /(?:^|[-])(\w)/g; var classify = function (str) { return str .replace(classifyRE, function (c) { return c.toUpperCase(); }) .replace(/[-]/g, ''); };

warn = function (msg, vm) { var trace = vm ? generateComponentTrace(vm) : '';

if (config.warnHandler) {
  config.warnHandler.call(null, msg, vm, trace);
} else if (hasConsole && (!config.silent)) {
  console.error(("[Vue warn]: " + msg + trace));
}

};

tip = function (msg, vm) { if (hasConsole && (!config.silent)) { console.warn("[Vue tip]: " + msg + ( vm ? generateComponentTrace(vm) : '' )); } };

formatComponentName = function (vm, includeFile) { if (vm.$root === vm) { return '' } var options = typeof vm === 'function' && vm.cid != null ? vm.options : vm._isVue ? vm.$options || vm.constructor.options : vm || {}; var name = options.name || options._componentTag; var file = options.__file; if (!name && file) { var match = file.match(/([^/\\]+).vue$/); name = match && match[1]; }

return (
  (name ? ("<" + (classify(name)) + ">") : "<Anonymous>") +
  (file && includeFile !== false ? (" at " + file) : '')
)

};

var repeat = function (str, n) { var res = ''; while (n) { if (n % 2 === 1) { res += str; } if (n > 1) { str += str; } n >>= 1; } return res };

generateComponentTrace = function (vm) { if (vm._isVue && vm.$parent) { var tree = []; var currentRecursiveSequence = 0; while (vm) { if (tree.length > 0) { var last = tree[tree.length - 1]; if (last.constructor === vm.constructor) { currentRecursiveSequence++; vm = vm.$parent; continue } else if (currentRecursiveSequence > 0) { tree[tree.length - 1] = [last, currentRecursiveSequence]; currentRecursiveSequence = 0; } } tree.push(vm); vm = vm.$parent; } return '\n\nfound in\n\n' + tree .map(function (vm, i) { return ("" + (i === 0 ? '---> ' : repeat(' ', 5 + i * 2)) + (Array.isArray(vm) ? ((formatComponentName(vm[0])) + "... (" + (vm[1]) + " recursive calls)") : formatComponentName(vm))); }) .join('\n') } else { return ("\n\n(found in " + (formatComponentName(vm)) + ")") } }; }

/* */

var uid = 0;

/**

A dep is an observable that can have multiple
directives subscribing to it. */ var Dep = function Dep () { this.id = uid++; this.subs = []; };

Dep.prototype.addSub = function addSub (sub) { this.subs.push(sub); };

Dep.prototype.removeSub = function removeSub (sub) { remove(this.subs, sub); };

Dep.prototype.depend = function depend () { if (Dep.target) { Dep.target.addDep(this); } };

Dep.prototype.notify = function notify () { // stabilize the subscriber list first var subs = this.subs.slice(); for (var i = 0, l = subs.length; i < l; i++) { subs[i].update(); } };

// the current target watcher being evaluated. // this is globally unique because there could be only one // watcher being evaluated at any time. Dep.target = null; var targetStack = [];

function pushTarget (_target) { if (Dep.target) { targetStack.push(Dep.target); } Dep.target = _target; }

function popTarget () { Dep.target = targetStack.pop(); }

/* */

var VNode = function VNode ( tag, data, children, text, elm, context, componentOptions, asyncFactory ) { this.tag = tag; this.data = data; this.children = children; this.text = text; this.elm = elm; this.ns = undefined; this.context = context; this.fnContext = undefined; this.fnOptions = undefined; this.fnScopeId = undefined; this.key = data && data.key; this.componentOptions = componentOptions; this.componentInstance = undefined; this.parent = undefined; this.raw = false; this.isStatic = false; this.isRootInsert = true; this.isComment = false; this.isCloned = false; this.isOnce = false; this.asyncFactory = asyncFactory; this.asyncMeta = undefined; this.isAsyncPlaceholder = false; };

var prototypeAccessors = { child: { configurable: true } };

// DEPRECATED: alias for componentInstance for backwards compat. /* istanbul ignore next */ prototypeAccessors.child.get = function () { return this.componentInstance };

Object.defineProperties( VNode.prototype, prototypeAccessors );

var createEmptyVNode = function (text) { if ( text === void 0 ) text = '';

var node = new VNode(); node.text = text; node.isComment = true; return node };

function createTextVNode (val) { return new VNode(undefined, undefined, undefined, String(val)) }

// optimized shallow clone // used for static nodes and slot nodes because they may be reused across // multiple renders, cloning them avoids errors when DOM manipulations rely // on their elm reference. function cloneVNode (vnode) { var cloned = new VNode( vnode.tag, vnode.data, vnode.children, vnode.text, vnode.elm, vnode.context, vnode.componentOptions, vnode.asyncFactory ); cloned.ns = vnode.ns; cloned.isStatic = vnode.isStatic; cloned.key = vnode.key; cloned.isComment = vnode.isComment; cloned.fnContext = vnode.fnContext; cloned.fnOptions = vnode.fnOptions; cloned.fnScopeId = vnode.fnScopeId; cloned.isCloned = true; return cloned }

/*

not type checking this file because flow doesn't play well with
dynamically accessing methods on Array prototype */

var arrayProto = Array.prototype; var arrayMethods = Object.create(arrayProto);

var methodsToPatch = [ 'push', 'pop', 'shift', 'unshift', 'splice', 'sort', 'reverse' ];

/**

Intercept mutating methods and emit events */ methodsToPatch.forEach(function (method) { // cache original method var original = arrayProto[method]; def(arrayMethods, method, function mutator () { var args = [], len = arguments.length; while ( len-- ) args[ len ] = arguments[ len ];

var result = original.apply(this, args); var ob = this.ob; var inserted; switch (method) { case 'push': case 'unshift': inserted = args; break case 'splice': inserted = args.slice(2); break } if (inserted) { ob.observeArray(inserted); } // notify change ob.dep.notify(); return result }); });

/* */

var arrayKeys = Object.getOwnPropertyNames(arrayMethods);

/**

In some cases we may want to disable observation inside a component's
update computation. */ var shouldObserve = true;

function toggleObserving (value) { shouldObserve = value; }

/**

Observer class that is attached to each observed
object. Once attached, the observer converts the target
object's property keys into getter/setters that
collect dependencies and dispatch updates. */ var Observer = function Observer (value) { this.value = value; this.dep = new Dep(); this.vmCount = 0; def(value, 'ob', this); if (Array.isArray(value)) { var augment = hasProto ? protoAugment : copyAugment; augment(value, arrayMethods, arrayKeys); this.observeArray(value); } else { this.walk(value); } };

/**

Walk through each property and convert them into
getter/setters. This method should only be called when
value type is Object. */ Observer.prototype.walk = function walk (obj) { var keys = Object.keys(obj); for (var i = 0; i < keys.length; i++) { defineReactive(obj, keys[i]); } };

/**

Observe a list of Array items. */ Observer.prototype.observeArray = function observeArray (items) { for (var i = 0, l = items.length; i < l; i++) { observe(items[i]); } };

// helpers

/**

Augment an target Object or Array by intercepting
the prototype chain using proto / function protoAugment (target, src, keys) { / eslint-disable no-proto / target.proto = src; / eslint-enable no-proto */ }

/**

Augment an target Object or Array by defining
hidden properties. / / istanbul ignore next */ function copyAugment (target, src, keys) { for (var i = 0, l = keys.length; i < l; i++) { var key = keys[i]; def(target, key, src[key]); } }

/**

Attempt to create an observer instance for a value,
returns the new observer if successfully observed,
or the existing observer if the value already has one. */ function observe (value, asRootData) { if (!isObject(value) || value instanceof VNode) { return } var ob; if (hasOwn(value, 'ob') && value.ob instanceof Observer) { ob = value.ob; } else if ( shouldObserve && !isServerRendering() && (Array.isArray(value) || isPlainObject(value)) && Object.isExtensible(value) && !value._isVue ) { ob = new Observer(value); } if (asRootData && ob) { ob.vmCount++; } return ob }

/**

Define a reactive property on an Object. */ function defineReactive ( obj, key, val, customSetter, shallow ) { var dep = new Dep();

var property = Object.getOwnPropertyDescriptor(obj, key); if (property && property.configurable === false) { return }

// cater for pre-defined getter/setters var getter = property && property.get; if (!getter && arguments.length === 2) { val = obj[key]; } var setter = property && property.set;

/**

Set a property on an object. Adds the new property and
triggers change notification if the property doesn't
already exist. */ function set (target, key, val) { if ("development" !== 'production' && (isUndef(target) || isPrimitive(target)) ) { warn(("Cannot set reactive property on undefined, null, or primitive value: " + ((target)))); } if (Array.isArray(target) && isValidArrayIndex(key)) { target.length = Math.max(target.length, key); target.splice(key, 1, val); return val } if (key in target && !(key in Object.prototype)) { target[key] = val; return val } var ob = (target).ob; if (target._isVue || (ob && ob.vmCount)) { "development" !== 'production' && warn( 'Avoid adding reactive properties to a Vue instance or its root $data ' + 'at runtime - declare it upfront in the data option.' ); return val } if (!ob) { target[key] = val; return val } defineReactive(ob.value, key, val); ob.dep.notify(); return val }

/**

Delete a property and trigger change if necessary. */ function del (target, key) { if ("development" !== 'production' && (isUndef(target) || isPrimitive(target)) ) { warn(("Cannot delete reactive property on undefined, null, or primitive value: " + ((target)))); } if (Array.isArray(target) && isValidArrayIndex(key)) { target.splice(key, 1); return } var ob = (target).ob; if (target._isVue || (ob && ob.vmCount)) { "development" !== 'production' && warn( 'Avoid deleting properties on a Vue instance or its root $data ' + '- just set it to null.' ); return } if (!hasOwn(target, key)) { return } delete target[key]; if (!ob) { return } ob.dep.notify(); }

/**

Collect dependencies on array elements when the array is touched, since
we cannot intercept array element access like property getters. */ function dependArray (value) { for (var e = (void 0), i = 0, l = value.length; i < l; i++) { e = value[i]; e && e.ob && e.ob.dep.depend(); if (Array.isArray(e)) { dependArray(e); } } }

/* */

/**

Option overwriting strategies are functions that handle
how to merge a parent option value and a child option
value into the final value. */ var strats = config.optionMergeStrategies;

/**

Options with restrictions */ { strats.el = strats.propsData = function (parent, child, vm, key) { if (!vm) { warn( "option "" + key + "" can only be used during instance " + 'creation with the new keyword.' ); } return defaultStrat(parent, child) }; }

/**

Helper that recursively merges two data objects together. */ function mergeData (to, from) { if (!from) { return to } var key, toVal, fromVal; var keys = Object.keys(from); for (var i = 0; i < keys.length; i++) { key = keys[i]; toVal = to[key]; fromVal = from[key]; if (!hasOwn(to, key)) { set(to, key, fromVal); } else if (isPlainObject(toVal) && isPlainObject(fromVal)) { mergeData(toVal, fromVal); } } return to }

/**

Data */ function mergeDataOrFn ( parentVal, childVal, vm ) { if (!vm) { // in a Vue.extend merge, both should be functions if (!childVal) { return parentVal } if (!parentVal) { return childVal } // when parentVal & childVal are both present, // we need to return a function that returns the // merged result of both functions... no need to // check if parentVal is a function here because // it has to be a function to pass previous merges. return function mergedDataFn () { return mergeData( typeof childVal === 'function' ? childVal.call(this, this) : childVal, typeof parentVal === 'function' ? parentVal.call(this, this) : parentVal ) } } else { return function mergedInstanceDataFn () { // instance merge var instanceData = typeof childVal === 'function' ? childVal.call(vm, vm) : childVal; var defaultData = typeof parentVal === 'function' ? parentVal.call(vm, vm) : parentVal; if (instanceData) { return mergeData(instanceData, defaultData) } else { return defaultData } } } }

strats.data = function ( parentVal, childVal, vm ) { if (!vm) { if (childVal && typeof childVal !== 'function') { "development" !== 'production' && warn( 'The "data" option should be a function ' + 'that returns a per-instance value in component ' + 'definitions.', vm );

  return parentVal
}
return mergeDataOrFn(parentVal, childVal)

}

return mergeDataOrFn(parentVal, childVal, vm) };

/**

Hooks and props are merged as arrays. */ function mergeHook ( parentVal, childVal ) { return childVal ? parentVal ? parentVal.concat(childVal) : Array.isArray(childVal) ? childVal : [childVal] : parentVal }

LIFECYCLE_HOOKS.forEach(function (hook) { strats[hook] = mergeHook; });

/**

Assets
When a vm is present (instance creation), we need to do
a three-way merge between constructor options, instance
options and parent options. */ function mergeAssets ( parentVal, childVal, vm, key ) { var res = Object.create(parentVal || null); if (childVal) { "development" !== 'production' && assertObjectType(key, childVal, vm); return extend(res, childVal) } else { return res } }

ASSET_TYPES.forEach(function (type) { strats[type + 's'] = mergeAssets; });

/**

Watchers.
Watchers hashes should not overwrite one
another, so we merge them as arrays. / strats.watch = function ( parentVal, childVal, vm, key ) { // work around Firefox's Object.prototype.watch... if (parentVal === nativeWatch) { parentVal = undefined; } if (childVal === nativeWatch) { childVal = undefined; } / istanbul ignore if */ if (!childVal) { return Object.create(parentVal || null) } { assertObjectType(key, childVal, vm); } if (!parentVal) { return childVal } var ret = {}; extend(ret, parentVal); for (var key$1 in childVal) { var parent = ret[key$1]; var child = childVal[key$1]; if (parent && !Array.isArray(parent)) { parent = [parent]; } ret[key$1] = parent ? parent.concat(child) : Array.isArray(child) ? child : [child]; } return ret };

/**

Other object hashes. */ strats.props = strats.methods = strats.inject = strats.computed = function ( parentVal, childVal, vm, key ) { if (childVal && "development" !== 'production') { assertObjectType(key, childVal, vm); } if (!parentVal) { return childVal } var ret = Object.create(null); extend(ret, parentVal); if (childVal) { extend(ret, childVal); } return ret }; strats.provide = mergeDataOrFn;

/**

Default strategy. */ var defaultStrat = function (parentVal, childVal) { return childVal === undefined ? parentVal : childVal };

/**

Validate component names */ function checkComponents (options) { for (var key in options.components) { validateComponentName(key); } }

function validateComponentName (name) { if (!/^[a-zA-Z][\w-]*$/.test(name)) { warn( 'Invalid component name: "' + name + '". Component names ' + 'can only contain alphanumeric characters and the hyphen, ' + 'and must start with a letter.' ); } if (isBuiltInTag(name) || config.isReservedTag(name)) { warn( 'Do not use built-in or reserved HTML elements as component ' + 'id: ' + name ); } }

/**

Ensure all props option syntax are normalized into the
Object-based format. */ function normalizeProps (options, vm) { var props = options.props; if (!props) { return } var res = {}; var i, val, name; if (Array.isArray(props)) { i = props.length; while (i--) { val = props[i]; if (typeof val === 'string') { name = camelize(val); res[name] = { type: null }; } else { warn('props must be strings when using array syntax.'); } } } else if (isPlainObject(props)) { for (var key in props) { val = props[key]; name = camelize(key); res[name] = isPlainObject(val) ? val : { type: val }; } } else { warn( "Invalid value for option "props": expected an Array or an Object, " + "but got " + (toRawType(props)) + ".", vm ); } options.props = res; }

/**

Normalize all injections into Object-based format */ function normalizeInject (options, vm) { var inject = options.inject; if (!inject) { return } var normalized = options.inject = {}; if (Array.isArray(inject)) { for (var i = 0; i < inject.length; i++) { normalized[inject[i]] = { from: inject[i] }; } } else if (isPlainObject(inject)) { for (var key in inject) { var val = inject[key]; normalized[key] = isPlainObject(val) ? extend({ from: key }, val) : { from: val }; } } else { warn( "Invalid value for option "inject": expected an Array or an Object, " + "but got " + (toRawType(inject)) + ".", vm ); } }

/**

Normalize raw function directives into object format. */ function normalizeDirectives (options) { var dirs = options.directives; if (dirs) { for (var key in dirs) { var def = dirs[key]; if (typeof def === 'function') { dirs[key] = { bind: def, update: def }; } } } }

function assertObjectType (name, value, vm) { if (!isPlainObject(value)) { warn( "Invalid value for option "" + name + "": expected an Object, " + "but got " + (toRawType(value)) + ".", vm ); } }

/**

Merge two option objects into a new one.
Core utility used in both instantiation and inheritance. */ function mergeOptions ( parent, child, vm ) { { checkComponents(child); }

if (typeof child === 'function') { child = child.options; }

normalizeProps(child, vm); normalizeInject(child, vm); normalizeDirectives(child); var extendsFrom = child.extends; if (extendsFrom) { parent = mergeOptions(parent, extendsFrom, vm); } if (child.mixins) { for (var i = 0, l = child.mixins.length; i < l; i++) { parent = mergeOptions(parent, child.mixins[i], vm); } } var options = {}; var key; for (key in parent) { mergeField(key); } for (key in child) { if (!hasOwn(parent, key)) { mergeField(key); } } function mergeField (key) { var strat = strats[key] || defaultStrat; options[key] = strat(parent[key], child[key], vm, key); } return options }

/**

Resolve an asset.
This function is used because child instances need access
to assets defined in its ancestor chain. / function resolveAsset ( options, type, id, warnMissing ) { / istanbul ignore if */ if (typeof id !== 'string') { return } var assets = options[type]; // check local registration variations first if (hasOwn(assets, id)) { return assets[id] } var camelizedId = camelize(id); if (hasOwn(assets, camelizedId)) { return assets[camelizedId] } var PascalCaseId = capitalize(camelizedId); if (hasOwn(assets, PascalCaseId)) { return assets[PascalCaseId] } // fallback to prototype chain var res = assets[id] || assets[camelizedId] || assets[PascalCaseId]; if ("development" !== 'production' && warnMissing && !res) { warn( 'Failed to resolve ' + type.slice(0, -1) + ': ' + id, options ); } return res }

/* */

/**

Get the default value of a prop. */ function getPropDefaultValue (vm, prop, key) { // no default, return undefined if (!hasOwn(prop, 'default')) { return undefined } var def = prop.default; // warn against non-factory defaults for Object & Array if ("development" !== 'production' && isObject(def)) { warn( 'Invalid default value for prop "' + key + '": ' + 'Props with type Object/Array must use a factory function ' + 'to return the default value.', vm ); } // the raw prop value was also undefined from previous render, // return previous default value to avoid unnecessary watcher trigger if (vm && vm.$options.propsData && vm.$options.propsData[key] === undefined && vm._props[key] !== undefined ) { return vm._props[key] } // call factory function for non-Function types // a value is Function if its prototype is function even across different execution context return typeof def === 'function' && getType(prop.type) !== 'Function' ? def.call(vm) : def }

/**

Assert whether a prop is valid. */ function assertProp ( prop, name, value, vm, absent ) { if (prop.required && absent) { warn( 'Missing required prop: "' + name + '"', vm ); return } if (value == null && !prop.required) { return } var type = prop.type; var valid = !type || type === true; var expectedTypes = []; if (type) { if (!Array.isArray(type)) { type = [type]; } for (var i = 0; i < type.length && !valid; i++) { var assertedType = assertType(value, type[i]); expectedTypes.push(assertedType.expectedType || ''); valid = assertedType.valid; } } if (!valid) { warn( "Invalid prop: type check failed for prop "" + name + ""." + " Expected " + (expectedTypes.map(capitalize).join(', ')) + ", got " + (toRawType(value)) + ".", vm ); return } var validator = prop.validator; if (validator) { if (!validator(value)) { warn( 'Invalid prop: custom validator check failed for prop "' + name + '".', vm ); } } }

var simpleCheckRE = /^(String|Number|Boolean|Function|Symbol)$/;

/**

Use function string name to check built-in types,
because a simple equality check will fail when running
across different vms / iframes. / function getType (fn) { var match = fn && fn.toString().match(/^\sfunction (\w+)/); return match ? match[1] : '' }

function isSameType (a, b) { return getType(a) === getType(b) }

function getTypeIndex (type, expectedTypes) { if (!Array.isArray(expectedTypes)) { return isSameType(expectedTypes, type) ? 0 : -1 } for (var i = 0, len = expectedTypes.length; i < len; i++) { if (isSameType(expectedTypes[i], type)) { return i } } return -1 }

/* */

function globalHandleError (err, vm, info) { if (config.errorHandler) { try { return config.errorHandler.call(null, err, vm, info) } catch (e) { logError(e, null, 'config.errorHandler'); } } logError(err, vm, info); }

function logError (err, vm, info) { { warn(("Error in " + info + ": "" + (err.toString()) + """), vm); } /* istanbul ignore else */ if ((inBrowser || inWeex) && typeof console !== 'undefined') { console.error(err); } else { throw err } }

/* / / globals MessageChannel */

var callbacks = []; var pending = false;

function flushCallbacks () { pending = false; var copies = callbacks.slice(0); callbacks.length = 0; for (var i = 0; i < copies.length; i++) { copiesi; } }

// Here we have async deferring wrappers using both microtasks and (macro) tasks. // In < 2.4 we used microtasks everywhere, but there are some scenarios where // microtasks have too high a priority and fire in between supposedly // sequential events (e.g. #4521, #6690) or even between bubbling of the same // event (#6566). However, using (macro) tasks everywhere also has subtle problems // when state is changed right before repaint (e.g. #6813, out-in transitions). // Here we use microtask by default, but expose a way to force (macro) task when // needed (e.g. in event handlers attached by v-on). var microTimerFunc; var macroTimerFunc; var useMacroTask = false;

// Determine (macro) task defer implementation. // Technically setImmediate should be the ideal choice, but it's only available // in IE. The only polyfill that consistently queues the callback after all DOM // events triggered in the same loop is by using MessageChannel. /* istanbul ignore if / if (typeof setImmediate !== 'undefined' && isNative(setImmediate)) { macroTimerFunc = function () { setImmediate(flushCallbacks); }; } else if (typeof MessageChannel !== 'undefined' && ( isNative(MessageChannel) || // PhantomJS MessageChannel.toString() === '[object MessageChannelConstructor]' )) { var channel = new MessageChannel(); var port = channel.port2; channel.port1.onmessage = flushCallbacks; macroTimerFunc = function () { port.postMessage(1); }; } else { / istanbul ignore next */ macroTimerFunc = function () { setTimeout(flushCallbacks, 0); }; }

// Determine microtask defer implementation. /* istanbul ignore next, $flow-disable-line */ if (typeof Promise !== 'undefined' && isNative(Promise)) { var p = Promise.resolve(); microTimerFunc = function () { p.then(flushCallbacks); // in problematic UIWebViews, Promise.then doesn't completely break, but // it can get stuck in a weird state where callbacks are pushed into the // microtask queue but the queue isn't being flushed, until the browser // needs to do some other work, e.g. handle a timer. Therefore we can // "force" the microtask queue to be flushed by adding an empty timer. if (isIOS) { setTimeout(noop); } }; } else { // fallback to macro microTimerFunc = macroTimerFunc; }

/**

Wrap a function so that if any code inside triggers state change,
the changes are queued using a (macro) task instead of a microtask. */ function withMacroTask (fn) { return fn._withTask || (fn._withTask = function () { useMacroTask = true; var res = fn.apply(null, arguments); useMacroTask = false; return res }) }

/* */

var mark; var measure;

{ var perf = inBrowser && window.performance; /* istanbul ignore if */ if ( perf && perf.mark && perf.measure && perf.clearMarks && perf.clearMeasures ) { mark = function (tag) { return perf.mark(tag); }; measure = function (name, startTag, endTag) { perf.measure(name, startTag, endTag); perf.clearMarks(startTag); perf.clearMarks(endTag); perf.clearMeasures(name); }; } }

/* not type checking this file because flow doesn't play well with Proxy */

var initProxy;

{ var allowedGlobals = makeMap( 'Infinity,undefined,NaN,isFinite,isNaN,' + 'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' + 'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,' + 'require' // for Webpack/Browserify );

var warnNonPresent = function (target, key) { warn( "Property or method "" + key + "" is not defined on the instance but " + 'referenced during render. Make sure 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 ); };

var hasProxy = typeof Proxy !== 'undefined' && isNative(Proxy);

if (hasProxy) { var isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta,exact'); config.keyCodes = new Proxy(config.keyCodes, { set: function set (target, key, value) { if (isBuiltInModifier(key)) { warn(("Avoid overwriting built-in modifier in config.keyCodes: ." + key)); return false } else { target[key] = value; return true } } }); }

var getHandler = { get: function get (target, key) { if (typeof key === 'string' && !(key in target)) { warnNonPresent(target, key); } return target[key] } };

initProxy = function initProxy (vm) { if (hasProxy) { // determine which proxy handler to use var options = vm.$options; var handlers = options.render && options.render._withStripped ? getHandler : hasHandler; vm._renderProxy = new Proxy(vm, handlers); } else { vm._renderProxy = vm; } }; }

/* */

var seenObjects = new _Set();

/**

Recursively traverse an object to evoke all converted
getters, so that every nested property inside the object
is collected as a "deep" dependency. */ function traverse (val) { _traverse(val, seenObjects); seenObjects.clear(); }

/* */

var normalizeEvent = cached(function (name) { var passive = name.charAt(0) === '&'; name = passive ? name.slice(1) : name; var once$$1 = name.charAt(0) === '~'; // Prefixed last, checked first name = once$$1 ? name.slice(1) : name; var capture = name.charAt(0) === '!'; name = capture ? name.slice(1) : name; return { name: name, once: once$$1, capture: capture, passive: passive } });

function createFnInvoker (fns) { function invoker () { var arguments$1 = arguments;

var fns = invoker.fns;
if (Array.isArray(fns)) {
  var cloned = fns.slice();
  for (var i = 0; i < cloned.length; i++) {
    cloned[i].apply(null, arguments$1);
  }
} else {
  // return handler return value for single handlers
  return fns.apply(null, arguments)
}

} invoker.fns = fns; return invoker }

/* */

function mergeVNodeHook (def, hookKey, hook) { if (def instanceof VNode) { def = def.data.hook || (def.data.hook = {}); } var invoker; var oldHook = def[hookKey];

function wrappedHook () { hook.apply(this, arguments); // important: remove merged hook to ensure it's called only once // and prevent memory leak remove(invoker.fns, wrappedHook); }

if (isUndef(oldHook)) { // no existing hook invoker = createFnInvoker([wrappedHook]); } else { /* istanbul ignore if */ if (isDef(oldHook.fns) && isTrue(oldHook.merged)) { // already a merged invoker invoker = oldHook; invoker.fns.push(wrappedHook); } else { // existing plain hook invoker = createFnInvoker([oldHook, wrappedHook]); } }

invoker.merged = true; def[hookKey] = invoker; }

/* */

/* */

// The template compiler attempts to minimize the need for normalization by // statically analyzing the template at compile time. // // For plain HTML markup, normalization can be completely skipped because the // generated render function is guaranteed to return Array. There are // two cases where extra normalization is needed:

// 1. When the children contains components - because a functional component // may return an Array instead of a single root. In this case, just a simple // normalization is needed - if any child is an Array, we flatten the whole // thing with Array.prototype.concat. It is guaranteed to be only 1-level deep // because functional components already normalize their own children. function simpleNormalizeChildren (children) { for (var i = 0; i < children.length; i++) { if (Array.isArray(children[i])) { return Array.prototype.concat.apply([], children) } } return children }

// 2. When the children contains constructs that always generated nested Arrays, // e.g. , , v-for, or when the children is provided by user // with hand-written render functions / JSX. In such cases a full normalization // is needed to cater to all possible types of children values. function normalizeChildren (children) { return isPrimitive(children) ? [createTextVNode(children)] : Array.isArray(children) ? normalizeArrayChildren(children) : undefined }

function isTextNode (node) { return isDef(node) && isDef(node.text) && isFalse(node.isComment) }

/* */

function ensureCtor (comp, base) { if ( comp.__esModule || (hasSymbol && comp[Symbol.toStringTag] === 'Module') ) { comp = comp.default; } return isObject(comp) ? base.extend(comp) : comp }

function createAsyncPlaceholder ( factory, data, context, children, tag ) { var node = createEmptyVNode(); node.asyncFactory = factory; node.asyncMeta = { data: data, context: context, children: children, tag: tag }; return node }

function resolveAsyncComponent ( factory, baseCtor, context ) { if (isTrue(factory.error) && isDef(factory.errorComp)) { return factory.errorComp }

if (isDef(factory.resolved)) { return factory.resolved }

if (isTrue(factory.loading) && isDef(factory.loadingComp)) { return factory.loadingComp }

if (isDef(factory.contexts)) { // already pending factory.contexts.push(context); } else { var contexts = factory.contexts = [context]; var sync = true;

var forceRender = function () {
  for (var i = 0, l = contexts.length; i < l; i++) {
    contexts[i].$forceUpdate();
  }
};

var resolve = once(function (res) {
  // cache resolved
  factory.resolved = ensureCtor(res, baseCtor);
  // invoke callbacks only if this is not a synchronous resolve
  // (async resolves are shimmed as synchronous during SSR)
  if (!sync) {
    forceRender();
  }
});

var reject = once(function (reason) {
  "development" !== 'production' && warn(
    "Failed to resolve async component: " + (String(factory)) +
    (reason ? ("\nReason: " + reason) : '')
  );
  if (isDef(factory.errorComp)) {
    factory.error = true;
    forceRender();
  }
});

var res = factory(resolve, reject);

if (isObject(res)) {
  if (typeof res.then === 'function') {
    // () => Promise
    if (isUndef(factory.resolved)) {
      res.then(resolve, reject);
    }
  } else if (isDef(res.component) && typeof res.component.then === 'function') {
    res.component.then(resolve, reject);

    if (isDef(res.error)) {
      factory.errorComp = ensureCtor(res.error, baseCtor);
    }

    if (isDef(res.loading)) {
      factory.loadingComp = ensureCtor(res.loading, baseCtor);
      if (res.delay === 0) {
        factory.loading = true;
      } else {
        setTimeout(function () {
          if (isUndef(factory.resolved) && isUndef(factory.error)) {
            factory.loading = true;
            forceRender();
          }
        }, res.delay || 200);
      }
    }

    if (isDef(res.timeout)) {
      setTimeout(function () {
        if (isUndef(factory.resolved)) {
          reject(
            "timeout (" + (res.timeout) + "ms)"
          );
        }
      }, res.timeout);
    }
  }
}

sync = false;
// return in case resolved synchronously
return factory.loading
  ? factory.loadingComp
  : factory.resolved

} }

/* */

function isAsyncPlaceholder (node) { return node.isComment && node.asyncFactory }

/* */

/* */

function initEvents (vm) { vm._events = Object.create(null); vm._hasHookEvent = false; // init parent attached events var listeners = vm.$options._parentListeners; if (listeners) { updateComponentListeners(vm, listeners); } }

var target;

function add (event, fn, once) { if (once) { target.$once(event, fn); } else { target.$on(event, fn); } }

function remove$1 (event, fn) { target.$off(event, fn); }

function updateComponentListeners ( vm, listeners, oldListeners ) { target = vm; updateListeners(listeners, oldListeners || {}, add, remove$1, vm); target = undefined; }

function eventsMixin (Vue) { var hookRE = /^hook:/; Vue.prototype.$on = function (event, fn) { var this$1 = this;

var vm = this;
if (Array.isArray(event)) {
  for (var i = 0, l = event.length; i < l; i++) {
    this$1.$on(event[i], fn);
  }
} else {
  (vm._events[event] || (vm._events[event] = [])).push(fn);
  // optimize hook:event cost by using a boolean flag marked at registration
  // instead of a hash lookup
  if (hookRE.test(event)) {
    vm._hasHookEvent = true;
  }
}
return vm

};

Vue.prototype.$once = function (event, fn) { var vm = this; function on () { vm.$off(event, on); fn.apply(vm, arguments); } on.fn = fn; vm.$on(event, on); return vm };

Vue.prototype.$off = function (event, fn) { var this$1 = this;

var vm = this;
// all
if (!arguments.length) {
  vm._events = Object.create(null);
  return vm
}
// array of events
if (Array.isArray(event)) {
  for (var i = 0, l = event.length; i < l; i++) {
    this$1.$off(event[i], fn);
  }
  return vm
}
// specific event
var cbs = vm._events[event];
if (!cbs) {
  return vm
}
if (!fn) {
  vm._events[event] = null;
  return vm
}
if (fn) {
  // specific handler
  var cb;
  var i$1 = cbs.length;
  while (i$1--) {
    cb = cbs[i$1];
    if (cb === fn || cb.fn === fn) {
      cbs.splice(i$1, 1);
      break
    }
  }
}
return vm

};

Vue.prototype.$emit = function (event) { var vm = this; { var lowerCaseEvent = event.toLowerCase(); if (lowerCaseEvent !== event && vm._events[lowerCaseEvent]) { tip( "Event "" + lowerCaseEvent + "" is emitted in component " + (formatComponentName(vm)) + " but the handler is registered for "" + event + "". " + "Note that HTML attributes are case-insensitive and you cannot use " + "v-on to listen to camelCase events when using in-DOM templates. " + "You should probably use "" + (hyphenate(event)) + "" instead of "" + event + ""." ); } } var cbs = vm._events[event]; if (cbs) { cbs = cbs.length > 1 ? toArray(cbs) : cbs; var args = toArray(arguments, 1); for (var i = 0, l = cbs.length; i < l; i++) { try { cbs[i].apply(vm, args); } catch (e) { handleError(e, vm, ("event handler for "" + event + """)); } } } return vm }; }

/* */

/**

Runtime helper for resolving raw children VNodes into a slot object. */ function resolveSlots ( children, context ) { var slots = {}; if (!children) { return slots } for (var i = 0, l = children.length; i < l; i++) { var child = children[i]; var data = child.data; // remove slot attribute if the node is resolved as a Vue slot node if (data && data.attrs && data.attrs.slot) { delete data.attrs.slot; } // named slots should only be respected if the vnode was rendered in the // same context. if ((child.context === context || child.fnContext === context) && data && data.slot != null ) { var name = data.slot; var slot = (slots[name] || (slots[name] = [])); if (child.tag === 'template') { slot.push.apply(slot, child.children || []); } else { slot.push(child); } } else { (slots.default || (slots.default = [])).push(child); } } // ignore slots that contains only whitespace for (var name$1 in slots) { if (slots[name$1].every(isWhitespace)) { delete slots[name$1]; } } return slots }

function isWhitespace (node) { return (node.isComment && !node.asyncFactory) || node.text === ' ' }

/* */

var activeInstance = null; var isUpdatingChildComponent = false;

function initLifecycle (vm) { var options = vm.$options;

// locate first non-abstract parent var parent = options.parent; if (parent && !options.abstract) { while (parent.$options.abstract && parent.$parent) { parent = parent.$parent; } parent.$children.push(vm); }

vm.$parent = parent; vm.$root = parent ? parent.$root : vm;

vm.$children = []; vm.$refs = {};

vm._watcher = null; vm._inactive = null; vm._directInactive = false; vm._isMounted = false; vm._isDestroyed = false; vm._isBeingDestroyed = false; }

Vue.prototype.$forceUpdate = function () { var vm = this; if (vm._watcher) { vm._watcher.update(); } };

Vue.prototype.$destroy = function () { var vm = this; if (vm._isBeingDestroyed) { return } callHook(vm, 'beforeDestroy'); vm._isBeingDestroyed = true; // remove self from parent var parent = vm.$parent; if (parent && !parent._isBeingDestroyed && !vm.$options.abstract) { remove(parent.$children, vm); } // teardown watchers if (vm._watcher) { vm._watcher.teardown(); } var i = vm._watchers.length; while (i--) { vm._watchers[i].teardown(); } // remove reference from data ob // frozen object may not have observer. if (vm._data.ob) { vm._data.ob.vmCount--; } // call the last hook... vm._isDestroyed = true; // invoke destroy hooks on current rendered tree vm.patch(vm._vnode, null); // fire destroyed hook callHook(vm, 'destroyed'); // turn off all instance listeners. vm.$off(); // remove vue reference if (vm.$el) { vm.$el.vue = null; } // release circular reference (#6759) if (vm.$vnode) { vm.$vnode.parent = null; } }; }

var updateComponent; /* istanbul ignore if */ if ("development" !== 'production' && config.performance && mark) { updateComponent = function () { var name = vm._name; var id = vm._uid; var startTag = "vue-perf-start:" + id; var endTag = "vue-perf-end:" + id;

  mark(startTag);
  var vnode = vm._render();
  mark(endTag);
  measure(("vue " + name + " render"), startTag, endTag);

  mark(startTag);
  vm._update(vnode, hydrating);
  mark(endTag);
  measure(("vue " + name + " patch"), startTag, endTag);
};

} else { updateComponent = function () { vm._update(vm._render(), hydrating); }; }

// we set this to vm._watcher inside the watcher's constructor // since the watcher's initial patch may call $forceUpdate (e.g. inside child // component's mounted hook), which relies on vm._watcher being already defined new Watcher(vm, updateComponent, noop, null, true /* isRenderWatcher */); hydrating = false;

// manually mounted instance, call mounted on self // mounted is called for render-created child components in its inserted hook if (vm.$vnode == null) { vm._isMounted = true; callHook(vm, 'mounted'); } return vm }

function updateChildComponent ( vm, propsData, listeners, parentVnode, renderChildren ) { { isUpdatingChildComponent = true; }

// determine whether component has slot children // we need to do this before overwriting $options._renderChildren var hasChildren = !!( renderChildren || // has new static slots vm.$options._renderChildren || // has old static slots parentVnode.data.scopedSlots || // has new scoped slots vm.$scopedSlots !== emptyObject // has old scoped slots );

vm.$options._parentVnode = parentVnode; vm.$vnode = parentVnode; // update vm's placeholder node without re-render

if (vm._vnode) { // update child tree's parent vm._vnode.parent = parentVnode; } vm.$options._renderChildren = renderChildren;

// update $attrs and $listeners hash // these are also reactive so they may trigger child update if the child // used them during render vm.$attrs = parentVnode.data.attrs || emptyObject; vm.$listeners = listeners || emptyObject;

// update props if (propsData && vm.$options.props) { toggleObserving(false); var props = vm._props; var propKeys = vm.$options._propKeys || []; for (var i = 0; i < propKeys.length; i++) { var key = propKeys[i]; var propOptions = vm.$options.props; // wtf flow? props[key] = validateProp(key, propOptions, propsData, vm); } toggleObserving(true); // keep a copy of raw propsData vm.$options.propsData = propsData; }

// update listeners listeners = listeners || emptyObject; var oldListeners = vm.$options._parentListeners; vm.$options._parentListeners = listeners; updateComponentListeners(vm, listeners, oldListeners);

// resolve slots + force update if has children if (hasChildren) { vm.$slots = resolveSlots(renderChildren, parentVnode.context); vm.$forceUpdate(); }

{ isUpdatingChildComponent = false; } }

function isInInactiveTree (vm) { while (vm && (vm = vm.$parent)) { if (vm._inactive) { return true } } return false }

/* */

var MAX_UPDATE_COUNT = 100;

var queue = []; var activatedChildren = []; var has = {}; var circular = {}; var waiting = false; var flushing = false; var index = 0;

/**

Reset the scheduler's state. */ function resetSchedulerState () { index = queue.length = activatedChildren.length = 0; has = {}; { circular = {}; } waiting = flushing = false; }

/**

Flush both queues and run the watchers. */ function flushSchedulerQueue () { flushing = true; var watcher, id;

// Sort queue before flush. // This ensures that: // 1. Components are updated from parent to child. (because parent is always // created before the child) // 2. A component's user watchers are run before its render watcher (because // user watchers are created before the render watcher) // 3. If a component is destroyed during a parent component's watcher run, // its watchers can be skipped. queue.sort(function (a, b) { return a.id - b.id; });

// do not cache length because more watchers might be pushed // as we run existing watchers for (index = 0; index < queue.length; index++) { watcher = queue[index]; id = watcher.id; has[id] = null; watcher.run(); // in dev build, check and stop circular updates. if ("development" !== 'production' && has[id] != null) { circular[id] = (circular[id] || 0) + 1; if (circular[id] > MAX_UPDATE_COUNT) { warn( 'You may have an infinite update loop ' + ( watcher.user ? ("in watcher with expression "" + (watcher.expression) + """) : "in a component render function." ), watcher.vm ); break } } }

// keep copies of post queues before resetting state var activatedQueue = activatedChildren.slice(); var updatedQueue = queue.slice();

resetSchedulerState();

// call component updated and activated hooks callActivatedHooks(activatedQueue); callUpdatedHooks(updatedQueue);

// devtool hook /* istanbul ignore if */ if (devtools && config.devtools) { devtools.emit('flush'); } }

function callUpdatedHooks (queue) { var i = queue.length; while (i--) { var watcher = queue[i]; var vm = watcher.vm; if (vm._watcher === watcher && vm._isMounted) { callHook(vm, 'updated'); } } }

/**

Queue a kept-alive component that was activated during patch.
The queue will be processed after the entire tree has been patched. */ function queueActivatedComponent (vm) { // setting _inactive to false here so that a render function can // rely on checking whether it's in an inactive tree (e.g. router-view) vm._inactive = false; activatedChildren.push(vm); }

function callActivatedHooks (queue) { for (var i = 0; i < queue.length; i++) { queue[i]._inactive = true; activateChildComponent(queue[i], true /* true */); } }

/**

Push a watcher into the watcher queue.
Jobs with duplicate IDs will be skipped unless it's
pushed when the queue is being flushed. */ function queueWatcher (watcher) { var id = watcher.id; if (has[id] == null) { has[id] = true; if (!flushing) { queue.push(watcher); } else { // if already flushing, splice the watcher based on its id // if already past its id, it will be run next immediately. var i = queue.length - 1; while (i > index && queue[i].id > watcher.id) { i--; } queue.splice(i + 1, 0, watcher); } // queue the flush if (!waiting) { waiting = true; nextTick(flushSchedulerQueue); } } }

/* */

var uid$1 = 0;

/**

A watcher parses an expression, collects dependencies,
and fires callback when the expression value changes.
This is used for both the $watch() api and directives. */ var Watcher = function Watcher ( vm, expOrFn, cb, options, isRenderWatcher ) { this.vm = vm; if (isRenderWatcher) { vm._watcher = this; } vm._watchers.push(this); // options if (options) { this.deep = !!options.deep; this.user = !!options.user; this.lazy = !!options.lazy; this.sync = !!options.sync; } else { this.deep = this.user = this.lazy = this.sync = false; } this.cb = cb; this.id = ++uid$1; // uid for batching this.active = true; this.dirty = this.lazy; // for lazy watchers this.deps = []; this.newDeps = []; this.depIds = new _Set(); this.newDepIds = new _Set(); this.expression = expOrFn.toString(); // parse expression for getter if (typeof expOrFn === 'function') { this.getter = expOrFn; } else { this.getter = parsePath(expOrFn); if (!this.getter) { this.getter = function () {}; "development" !== 'production' && warn( "Failed watching path: "" + expOrFn + "" " + 'Watcher only accepts simple dot-delimited paths. ' + 'For full control, use a function instead.', vm ); } } this.value = this.lazy ? undefined : this.get(); };

/**

Evaluate the getter, and re-collect dependencies. */ Watcher.prototype.get = function get () { pushTarget(this); var value; var vm = this.vm; try { value = this.getter.call(vm, vm); } catch (e) { if (this.user) { handleError(e, vm, ("getter for watcher "" + (this.expression) + """)); } else { throw e } } finally { // "touch" every property so they are all tracked as // dependencies for deep watching if (this.deep) { traverse(value); } popTarget(); this.cleanupDeps(); } return value };

/**

Add a dependency to this directive. */ Watcher.prototype.addDep = function addDep (dep) { var id = dep.id; if (!this.newDepIds.has(id)) { this.newDepIds.add(id); this.newDeps.push(dep); if (!this.depIds.has(id)) { dep.addSub(this); } } };

/**

Clean up for dependency collection. */ Watcher.prototype.cleanupDeps = function cleanupDeps () { var this$1 = this;

var i = this.deps.length; while (i--) { var dep = this$1.deps[i]; if (!this$1.newDepIds.has(dep.id)) { dep.removeSub(this$1); } } var tmp = this.depIds; this.depIds = this.newDepIds; this.newDepIds = tmp; this.newDepIds.clear(); tmp = this.deps; this.deps = this.newDeps; this.newDeps = tmp; this.newDeps.length = 0; };

/**

Subscriber interface.
Will be called when a dependency changes. / Watcher.prototype.update = function update () { / istanbul ignore else */ if (this.lazy) { this.dirty = true; } else if (this.sync) { this.run(); } else { queueWatcher(this); } };

/**

Scheduler job interface.
Will be called by the scheduler. */ Watcher.prototype.run = function run () { if (this.active) { var value = this.get(); if ( value !== this.value || // Deep watchers and watchers on Object/Arrays should fire even // when the value is the same, because the value may // have mutated. isObject(value) || this.deep ) { // set new value var oldValue = this.value; this.value = value; if (this.user) { try { this.cb.call(this.vm, value, oldValue); } catch (e) { handleError(e, this.vm, ("callback for watcher "" + (this.expression) + """)); } } else { this.cb.call(this.vm, value, oldValue); } } } };

/**

Evaluate the value of the watcher.
This only gets called for lazy watchers. */ Watcher.prototype.evaluate = function evaluate () { this.value = this.get(); this.dirty = false; };

/**

Depend on all deps collected by this watcher. */ Watcher.prototype.depend = function depend () { var this$1 = this;

var i = this.deps.length; while (i--) { this$1.deps[i].depend(); } };

/**

Remove self from all dependencies' subscriber list. */ Watcher.prototype.teardown = function teardown () { var this$1 = this;

if (this.active) { // remove self from vm's watcher list // this is a somewhat expensive operation so we skip it // if the vm is being destroyed. if (!this.vm._isBeingDestroyed) { remove(this.vm._watchers, this); } var i = this.deps.length; while (i--) { this$1.deps[i].removeSub(this$1); } this.active = false; } };

/* */

var sharedPropertyDefinition = { enumerable: true, configurable: true, get: noop, set: noop };

for (var key in propsOptions) loop( key ); toggleObserving(true); }

function initData (vm) { var data = vm.$options.data; data = vm._data = typeof data === 'function' ? getData(data, vm) : data || {}; if (!isPlainObject(data)) { data = {}; "development" !== 'production' && warn( 'data functions should return an object:\n' + 'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function', vm ); } // proxy data on instance var keys = Object.keys(data); var props = vm.$options.props; var methods = vm.$options.methods; var i = keys.length; while (i--) { var key = keys[i]; { if (methods && hasOwn(methods, key)) { warn( ("Method "" + key + "" has already been defined as a data property."), vm ); } } if (props && hasOwn(props, key)) { "development" !== 'production' && warn( "The data property "" + key + "" is already declared as a prop. " + "Use prop default value instead.", vm ); } else if (!isReserved(key)) { proxy(vm, "_data", key); } } // observe data observe(data, true /* asRootData */); }

var computedWatcherOptions = { lazy: true };

function initComputed (vm, computed) { // $flow-disable-line var watchers = vm._computedWatchers = Object.create(null); // computed properties are just getters during SSR var isSSR = isServerRendering();

for (var key in computed) { var userDef = computed[key]; var getter = typeof userDef === 'function' ? userDef : userDef.get; if ("development" !== 'production' && getter == null) { warn( ("Getter is missing for computed property "" + key + ""."), vm ); }

if (!isSSR) {
  // create internal watcher for the computed property.
  watchers[key] = new Watcher(
    vm,
    getter || noop,
    noop,
    computedWatcherOptions
  );
}

// component-defined computed properties are already defined on the
// component prototype. We only need to define computed properties defined
// at instantiation here.
if (!(key in vm)) {
  defineComputed(vm, key, userDef);
} else {
  if (key in vm.$data) {
    warn(("The computed property \"" + key + "\" is already defined in data."), vm);
  } else if (vm.$options.props && key in vm.$options.props) {
    warn(("The computed property \"" + key + "\" is already defined as a prop."), vm);
  }
}

} }

Vue.prototype.$set = set; Vue.prototype.$delete = del;

Vue.prototype.$watch = function ( expOrFn, cb, options ) { var vm = this; if (isPlainObject(cb)) { return createWatcher(vm, expOrFn, cb, options) } options = options || {}; options.user = true; var watcher = new Watcher(vm, expOrFn, cb, options); if (options.immediate) { cb.call(vm, watcher.value); } return function unwatchFn () { watcher.teardown(); } }; }

/* */

function initProvide (vm) { var provide = vm.$options.provide; if (provide) { vm._provided = typeof provide === 'function' ? provide.call(vm) : provide; } }

function resolveInject (inject, vm) { if (inject) { // inject is :any because flow is not smart enough to figure out cached var result = Object.create(null); var keys = hasSymbol ? Reflect.ownKeys(inject).filter(function (key) { /* istanbul ignore next */ return Object.getOwnPropertyDescriptor(inject, key).enumerable }) : Object.keys(inject);

for (var i = 0; i < keys.length; i++) {
  var key = keys[i];
  var provideKey = inject[key].from;
  var source = vm;
  while (source) {
    if (source._provided && hasOwn(source._provided, provideKey)) {
      result[key] = source._provided[provideKey];
      break
    }
    source = source.$parent;
  }
  if (!source) {
    if ('default' in inject[key]) {
      var provideDefault = inject[key].default;
      result[key] = typeof provideDefault === 'function'
        ? provideDefault.call(vm)
        : provideDefault;
    } else {
      warn(("Injection \"" + key + "\" not found"), vm);
    }
  }
}
return result

} }

/* */

/**

Runtime helper for rendering v-for lists. */ function renderList ( val, render ) { var ret, i, l, keys, key; if (Array.isArray(val) || typeof val === 'string') { ret = new Array(val.length); for (i = 0, l = val.length; i < l; i++) { ret[i] = render(val[i], i); } } else if (typeof val === 'number') { ret = new Array(val); for (i = 0; i < val; i++) { ret[i] = render(i + 1, i); } } else if (isObject(val)) { keys = Object.keys(val); ret = new Array(keys.length); for (i = 0, l = keys.length; i < l; i++) { key = keys[i]; ret[i] = render(val[key], key, i); } } if (isDef(ret)) { (ret)._isVList = true; } return ret }

/* */

/**

Runtime helper for rendering */ function renderSlot ( name, fallback, props, bindObject ) { var scopedSlotFn = this.$scopedSlots[name]; var nodes; if (scopedSlotFn) { // scoped slot props = props || {}; if (bindObject) { if ("development" !== 'production' && !isObject(bindObject)) { warn( 'slot v-bind without argument expects an Object', this ); } props = extend(extend({}, bindObject), props); } nodes = scopedSlotFn(props) || fallback; } else { var slotNodes = this.$slots[name]; // warn duplicate slot usage if (slotNodes) { if ("development" !== 'production' && slotNodes._rendered) { warn( "Duplicate presence of slot "" + name + "" found in the same render tree " + "- this will likely cause render errors.", this ); } slotNodes._rendered = true; } nodes = slotNodes || fallback; }

var target = props && props.slot; if (target) { return this.$createElement('template', { slot: target }, nodes) } else { return nodes } }

/* */

/**

Runtime helper for resolving filters */ function resolveFilter (id) { return resolveAsset(this.$options, 'filters', id, true) || identity }

/* */

function isKeyNotMatch (expect, actual) { if (Array.isArray(expect)) { return expect.indexOf(actual) === -1 } else { return expect !== actual } }

/**

Runtime helper for checking keyCodes from config.
exposed as Vue.prototype._k
passing in eventKeyName as last argument separately for backwards compat */ function checkKeyCodes ( eventKeyCode, key, builtInKeyCode, eventKeyName, builtInKeyName ) { var mappedKeyCode = config.keyCodes[key] || builtInKeyCode; if (builtInKeyName && eventKeyName && !config.keyCodes[key]) { return isKeyNotMatch(builtInKeyName, eventKeyName) } else if (mappedKeyCode) { return isKeyNotMatch(mappedKeyCode, eventKeyCode) } else if (eventKeyName) { return hyphenate(eventKeyName) !== key } }

/* */

/**

Runtime helper for merging v-bind="object" into a VNode's data. */ function bindObjectProps ( data, tag, value, asProp, isSync ) { if (value) { if (!isObject(value)) { "development" !== 'production' && warn( 'v-bind without argument expects an Object or Array value', this ); } else { if (Array.isArray(value)) { value = toObject(value); } var hash; var loop = function ( key ) { if ( key === 'class' || key === 'style' || isReservedAttribute(key) ) { hash = data; } else { var type = data.attrs && data.attrs.type; hash = asProp || config.mustUseProp(tag, type, key) ? data.domProps || (data.domProps = {}) : data.attrs || (data.attrs = {}); } if (!(key in hash)) { hash[key] = value[key];
```
   if (isSync) {
     var on = data.on || (data.on = {});
     on[("update:" + key)] = function ($event) {
       value[key] = $event;
     };
   }
 }
```
};

for (var key in value) loop( key ); } } return data }

/* */

/**

Runtime helper for rendering static trees. */ function renderStatic ( index, isInFor ) { var cached = this._staticTrees || (this._staticTrees = []); var tree = cached[index]; // if has already-rendered static tree and not inside v-for, // we can reuse the same tree. if (tree && !isInFor) { return tree } // otherwise, render a fresh tree. tree = cached[index] = this.$options.staticRenderFns[index].call( this._renderProxy, null, this // for render fns generated for functional component templates ); markStatic(tree, ("static" + index), false); return tree }

/**

Runtime helper for v-once.
Effectively it means marking the node as static with a unique key. */ function markOnce ( tree, index, key ) { markStatic(tree, ("once" + index + (key ? ("_" + key) : "")), true); return tree }

function markStaticNode (node, key, isOnce) { node.isStatic = true; node.key = key; node.isOnce = isOnce; }

/* */

/* */

function installRenderHelpers (target) { target._o = markOnce; target._n = toNumber; target._s = toString; target._l = renderList; target._t = renderSlot; target._q = looseEqual; target._i = looseIndexOf; target._m = renderStatic; target._f = resolveFilter; target._k = checkKeyCodes; target._b = bindObjectProps; target._v = createTextVNode; target._e = createEmptyVNode; target._u = resolveScopedSlots; target._g = bindObjectListeners; }

/* */

function FunctionalRenderContext ( data, props, children, parent, Ctor ) { var options = Ctor.options; // ensure the createElement function in functional components // gets a unique context - this is necessary for correct named slot check var contextVm; if (hasOwn(parent, '_uid')) { contextVm = Object.create(parent); // $flow-disable-line contextVm._original = parent; } else { // the context vm passed in is a functional context as well. // in this case we want to make sure we are able to get a hold to the // real context instance. contextVm = parent; // $flow-disable-line parent = parent._original; } var isCompiled = isTrue(options._compiled); var needNormalization = !isCompiled;

this.data = data; this.props = props; this.children = children; this.parent = parent; this.listeners = data.on || emptyObject; this.injections = resolveInject(options.inject, parent); this.slots = function () { return resolveSlots(children, parent); };

// support for compiled functional template if (isCompiled) { // exposing $options for renderStatic() this.$options = options; // pre-resolve slots for renderSlot() this.$slots = this.slots(); this.$scopedSlots = data.scopedSlots || emptyObject; }

if (options._scopeId) { this._c = function (a, b, c, d) { var vnode = createElement(contextVm, a, b, c, d, needNormalization); if (vnode && !Array.isArray(vnode)) { vnode.fnScopeId = options._scopeId; vnode.fnContext = parent; } return vnode }; } else { this._c = function (a, b, c, d) { return createElement(contextVm, a, b, c, d, needNormalization); }; } }

installRenderHelpers(FunctionalRenderContext.prototype);

var renderContext = new FunctionalRenderContext( data, props, children, contextVm, Ctor );

var vnode = options.render.call(null, renderContext._c, renderContext);

if (vnode instanceof VNode) { return cloneAndMarkFunctionalResult(vnode, data, renderContext.parent, options) } else if (Array.isArray(vnode)) { var vnodes = normalizeChildren(vnode) || []; var res = new Array(vnodes.length); for (var i = 0; i < vnodes.length; i++) { res[i] = cloneAndMarkFunctionalResult(vnodes[i], data, renderContext.parent, options); } return res } }

function mergeProps (to, from) { for (var key in from) { to[camelize(key)] = from[key]; } }

/* */

// Register the component hook to weex native render engine. // The hook will be triggered by native, not javascript.

// Updates the state of the component to weex native render engine.

/* */

// https://github.com/Hanks10100/weex-native-directive/tree/master/component

// listening on native callback

/* */

// inline hooks to be invoked on component VNodes during patch var componentVNodeHooks = { init: function init ( vnode, hydrating, parentElm, refElm ) { if ( vnode.componentInstance && !vnode.componentInstance._isDestroyed && vnode.data.keepAlive ) { // kept-alive components, treat as a patch var mountedNode = vnode; // work around flow componentVNodeHooks.prepatch(mountedNode, mountedNode); } else { var child = vnode.componentInstance = createComponentInstanceForVnode( vnode, activeInstance, parentElm, refElm ); child.$mount(hydrating ? vnode.elm : undefined, hydrating); } },

prepatch: function prepatch (oldVnode, vnode) { var options = vnode.componentOptions; var child = vnode.componentInstance = oldVnode.componentInstance; updateChildComponent( child, options.propsData, // updated props options.listeners, // updated listeners vnode, // new parent vnode options.children // new children ); },

insert: function insert (vnode) { var context = vnode.context; var componentInstance = vnode.componentInstance; if (!componentInstance._isMounted) { componentInstance._isMounted = true; callHook(componentInstance, 'mounted'); } if (vnode.data.keepAlive) { if (context._isMounted) { // vue-router#1212 // During updates, a kept-alive component's child components may // change, so directly walking the tree here may call activated hooks // on incorrect children. Instead we push them into a queue which will // be processed after the whole patch process ended. queueActivatedComponent(componentInstance); } else { activateChildComponent(componentInstance, true /* direct */); } } },

destroy: function destroy (vnode) { var componentInstance = vnode.componentInstance; if (!componentInstance._isDestroyed) { if (!vnode.data.keepAlive) { componentInstance.$destroy(); } else { deactivateChildComponent(componentInstance, true /* direct */); } } } };

var hooksToMerge = Object.keys(componentVNodeHooks);

function createComponent ( Ctor, data, context, children, tag ) { if (isUndef(Ctor)) { return }

var baseCtor = context.$options._base;

// plain options object: turn it into a constructor if (isObject(Ctor)) { Ctor = baseCtor.extend(Ctor); }

// if at this stage it's not a constructor or an async component factory, // reject. if (typeof Ctor !== 'function') { { warn(("Invalid Component definition: " + (String(Ctor))), context); } return }

// async component var asyncFactory; if (isUndef(Ctor.cid)) { asyncFactory = Ctor; Ctor = resolveAsyncComponent(asyncFactory, baseCtor, context); if (Ctor === undefined) { // return a placeholder node for async component, which is rendered // as a comment node but preserves all the raw information for the node. // the information will be used for async server-rendering and hydration. return createAsyncPlaceholder( asyncFactory, data, context, children, tag ) } }

data = data || {};

// resolve constructor options in case global mixins are applied after // component constructor creation resolveConstructorOptions(Ctor);

// transform component v-model data into props & events if (isDef(data.model)) { transformModel(Ctor.options, data); }

// extract props var propsData = extractPropsFromVNodeData(data, Ctor, tag);

// functional component if (isTrue(Ctor.options.functional)) { return createFunctionalComponent(Ctor, propsData, data, context, children) }

// extract listeners, since these needs to be treated as // child component listeners instead of DOM listeners var listeners = data.on; // replace with listeners with .native modifier // so it gets processed during parent component patch. data.on = data.nativeOn;

if (isTrue(Ctor.options.abstract)) { // abstract components do not keep anything // other than props & listeners & slot

// work around flow
var slot = data.slot;
data = {};
if (slot) {
  data.slot = slot;
}

}

// install component management hooks onto the placeholder node installComponentHooks(data);

// return a placeholder vnode var name = Ctor.options.name || tag; var vnode = new VNode( ("vue-component-" + (Ctor.cid) + (name ? ("-" + name) : '')), data, undefined, undefined, undefined, context, { Ctor: Ctor, propsData: propsData, listeners: listeners, tag: tag, children: children }, asyncFactory );

// Weex specific: invoke recycle-list optimized @render function for // extracting cell-slot template. // https://github.com/Hanks10100/weex-native-directive/tree/master/component /* istanbul ignore if */ return vnode }

// transform component v-model info (value and callback) into // prop and event handler respectively. function transformModel (options, data) { var prop = (options.model && options.model.prop) || 'value'; var event = (options.model && options.model.event) || 'input';(data.props || (data.props = {}))[prop] = data.model.value; var on = data.on || (data.on = {}); if (isDef(on[event])) { on[event] = [data.model.callback].concat(on[event]); } else { on[event] = data.model.callback; } }

/* */

var SIMPLE_NORMALIZE = 1; var ALWAYS_NORMALIZE = 2;

// wrapper function for providing a more flexible interface // without getting yelled at by flow function createElement ( context, tag, data, children, normalizationType, alwaysNormalize ) { if (Array.isArray(data) || isPrimitive(data)) { normalizationType = children; children = data; data = undefined; } if (isTrue(alwaysNormalize)) { normalizationType = ALWAYS_NORMALIZE; } return _createElement(context, tag, data, children, normalizationType) }

// ref #5318 // necessary to ensure parent re-render when deep bindings like :style and // :class are used on slot nodes function registerDeepBindings (data) { if (isObject(data.style)) { traverse(data.style); } if (isObject(data.class)) { traverse(data.class); } }

/* */

function initRender (vm) { vm._vnode = null; // the root of the child tree vm._staticTrees = null; // v-once cached trees var options = vm.$options; var parentVnode = vm.$vnode = options._parentVnode; // the placeholder node in parent tree var renderContext = parentVnode && parentVnode.context; vm.$slots = resolveSlots(options._renderChildren, renderContext); vm.$scopedSlots = emptyObject; // bind the createElement fn to this instance // so that we get proper render context inside it. // args order: tag, data, children, normalizationType, alwaysNormalize // internal version is used by render functions compiled from templates vm._c = function (a, b, c, d) { return createElement(vm, a, b, c, d, false); }; // normalization is always applied for the public version, used in // user-written render functions. vm.$createElement = function (a, b, c, d) { return createElement(vm, a, b, c, d, true); };

// $attrs & $listeners are exposed for easier HOC creation. // they need to be reactive so that HOCs using them are always updated var parentData = parentVnode && parentVnode.data;

/* istanbul ignore else */ { defineReactive(vm, '$attrs', parentData && parentData.attrs || emptyObject, function () { !isUpdatingChildComponent && warn("$attrs is readonly.", vm); }, true); defineReactive(vm, '$listeners', options._parentListeners || emptyObject, function () { !isUpdatingChildComponent && warn("$listeners is readonly.", vm); }, true); } }

function renderMixin (Vue) { // install runtime convenience helpers installRenderHelpers(Vue.prototype);

Vue.prototype.$nextTick = function (fn) { return nextTick(fn, this) };

Vue.prototype._render = function () { var vm = this; var ref = vm.$options; var render = ref.render; var _parentVnode = ref._parentVnode;

// reset _rendered flag on slots for duplicate slot check
{
  for (var key in vm.$slots) {
    // $flow-disable-line
    vm.$slots[key]._rendered = false;
  }
}

if (_parentVnode) {
  vm.$scopedSlots = _parentVnode.data.scopedSlots || emptyObject;
}

// set parent vnode. this allows render functions to have access
// to the data on the placeholder node.
vm.$vnode = _parentVnode;
// render self
var vnode;
try {
  vnode = render.call(vm._renderProxy, vm.$createElement);
} catch (e) {
  handleError(e, vm, "render");
  // return error render result,
  // or previous vnode to prevent render error causing blank component
  /* istanbul ignore else */
  {
    if (vm.$options.renderError) {
      try {
        vnode = vm.$options.renderError.call(vm._renderProxy, vm.$createElement, e);
      } catch (e) {
        handleError(e, vm, "renderError");
        vnode = vm._vnode;
      }
    } else {
      vnode = vm._vnode;
    }
  }
}
// return empty vnode in case the render function errored out
if (!(vnode instanceof VNode)) {
  if ("development" !== 'production' && Array.isArray(vnode)) {
    warn(
      'Multiple root nodes returned from render function. Render function ' +
      'should return a single root node.',
      vm
    );
  }
  vnode = createEmptyVNode();
}
// set parent
vnode.parent = _parentVnode;
return vnode

}; }

/* */

var uid$3 = 0;

function initMixin (Vue) { Vue.prototype._init = function (options) { var vm = this; // a uid vm._uid = uid$3++;

var startTag, endTag;
/* istanbul ignore if */
if ("development" !== 'production' && config.performance && mark) {
  startTag = "vue-perf-start:" + (vm._uid);
  endTag = "vue-perf-end:" + (vm._uid);
  mark(startTag);
}

// a flag to avoid this being observed
vm._isVue = true;
// merge options
if (options && options._isComponent) {
  // optimize internal component instantiation
  // since dynamic options merging is pretty slow, and none of the
  // internal component options needs special treatment.
  initInternalComponent(vm, options);
} else {
  vm.$options = mergeOptions(
    resolveConstructorOptions(vm.constructor),
    options || {},
    vm
  );
}
/* istanbul ignore else */
{
  initProxy(vm);
}
// expose real self
vm._self = vm;
initLifecycle(vm);
initEvents(vm);
initRender(vm);
callHook(vm, 'beforeCreate');
initInjections(vm); // resolve injections before data/props
initState(vm);
initProvide(vm); // resolve provide after data/props
callHook(vm, 'created');

/* istanbul ignore if */
if ("development" !== 'production' && config.performance && mark) {
  vm._name = formatComponentName(vm, false);
  mark(endTag);
  measure(("vue " + (vm._name) + " init"), startTag, endTag);
}

if (vm.$options.el) {
  vm.$mount(vm.$options.el);
}

}; }

function initInternalComponent (vm, options) { var opts = vm.$options = Object.create(vm.constructor.options); // doing this because it's faster than dynamic enumeration. var parentVnode = options._parentVnode; opts.parent = options.parent; opts._parentVnode = parentVnode; opts._parentElm = options._parentElm; opts._refElm = options._refElm;

var vnodeComponentOptions = parentVnode.componentOptions; opts.propsData = vnodeComponentOptions.propsData; opts._parentListeners = vnodeComponentOptions.listeners; opts._renderChildren = vnodeComponentOptions.children; opts._componentTag = vnodeComponentOptions.tag;

if (options.render) { opts.render = options.render; opts.staticRenderFns = options.staticRenderFns; } }

function Vue (options) { if ("development" !== 'production' && !(this instanceof Vue) ) { warn('Vue is a constructor and should be called with the new keyword'); } this._init(options); }

initMixin(Vue); stateMixin(Vue); eventsMixin(Vue); lifecycleMixin(Vue); renderMixin(Vue);

/* */

function initUse (Vue) { Vue.use = function (plugin) { var installedPlugins = (this._installedPlugins || (this._installedPlugins = [])); if (installedPlugins.indexOf(plugin) > -1) { return this }

// additional parameters
var args = toArray(arguments, 1);
args.unshift(this);
if (typeof plugin.install === 'function') {
  plugin.install.apply(plugin, args);
} else if (typeof plugin === 'function') {
  plugin.apply(null, args);
}
installedPlugins.push(plugin);
return this

}; }

/* */

function initMixin$1 (Vue) { Vue.mixin = function (mixin) { this.options = mergeOptions(this.options, mixin); return this }; }

/* */

function initExtend (Vue) { /**

Each instance constructor, including Vue, has a unique
cid. This enables us to create wrapped "child
constructors" for prototypal inheritance and cache them. */ Vue.cid = 0; var cid = 1;

/**

Class inheritance */ Vue.extend = function (extendOptions) { extendOptions = extendOptions || {}; var Super = this; var SuperId = Super.cid; var cachedCtors = extendOptions._Ctor || (extendOptions._Ctor = {}); if (cachedCtors[SuperId]) { return cachedCtors[SuperId] }

var name = extendOptions.name || Super.options.name;
if ("development" !== 'production' && name) {
  validateComponentName(name);
}

var Sub = function VueComponent (options) {
  this._init(options);
};
Sub.prototype = Object.create(Super.prototype);
Sub.prototype.constructor = Sub;
Sub.cid = cid++;
Sub.options = mergeOptions(
  Super.options,
  extendOptions
);
Sub['super'] = Super;

// For props and computed properties, we define the proxy getters on
// the Vue instances at extension time, on the extended prototype. This
// avoids Object.defineProperty calls for each instance created.
if (Sub.options.props) {
  initProps$1(Sub);
}
if (Sub.options.computed) {
  initComputed$1(Sub);
}

// allow further extension/mixin/plugin usage
Sub.extend = Super.extend;
Sub.mixin = Super.mixin;
Sub.use = Super.use;

// create asset registers, so extended classes
// can have their private assets too.
ASSET_TYPES.forEach(function (type) {
  Sub[type] = Super[type];
});
// enable recursive self-lookup
if (name) {
  Sub.options.components[name] = Sub;
}

// keep a reference to the super options at extension time.
// later at instantiation we can check if Super's options have
// been updated.
Sub.superOptions = Super.options;
Sub.extendOptions = extendOptions;
Sub.sealedOptions = extend({}, Sub.options);

// cache constructor
cachedCtors[SuperId] = Sub;
return Sub

}; }

function initProps$1 (Comp) { var props = Comp.options.props; for (var key in props) { proxy(Comp.prototype, "_props", key); } }

function initComputed$1 (Comp) { var computed = Comp.options.computed; for (var key in computed) { defineComputed(Comp.prototype, key, computed[key]); } }

/* */

function initAssetRegisters (Vue) { /**

Create asset registration methods. / ASSET_TYPES.forEach(function (type) { Vue[type] = function ( id, definition ) { if (!definition) { return this.options[type + 's'][id] } else { / istanbul ignore if */ if ("development" !== 'production' && type === 'component') { validateComponentName(id); } if (type === 'component' && isPlainObject(definition)) { definition.name = definition.name || id; definition = this.options._base.extend(definition); } if (type === 'directive' && typeof definition === 'function') { definition = { bind: definition, update: definition }; } this.options[type + 's'][id] = definition; return definition } }; }); }

/* */

function getComponentName (opts) { return opts && (opts.Ctor.options.name || opts.tag) }

function matches (pattern, name) { if (Array.isArray(pattern)) { return pattern.indexOf(name) > -1 } else if (typeof pattern === 'string') { return pattern.split(',').indexOf(name) > -1 } else if (isRegExp(pattern)) { return pattern.test(name) } /* istanbul ignore next */ return false }

function pruneCacheEntry ( cache, key, keys, current ) { var cached$$1 = cache[key]; if (cached$$1 && (!current || cached$$1.tag !== current.tag)) { cached$$1.componentInstance.$destroy(); } cache[key] = null; remove(keys, key); }

var patternTypes = [String, RegExp, Array];

var KeepAlive = { name: 'keep-alive', abstract: true,

props: { include: patternTypes, exclude: patternTypes, max: [String, Number] },

created: function created () { this.cache = Object.create(null); this.keys = []; },

destroyed: function destroyed () { var this$1 = this;

for (var key in this$1.cache) {
  pruneCacheEntry(this$1.cache, key, this$1.keys);
}

},

mounted: function mounted () { var this$1 = this;

this.$watch('include', function (val) {
  pruneCache(this$1, function (name) { return matches(val, name); });
});
this.$watch('exclude', function (val) {
  pruneCache(this$1, function (name) { return !matches(val, name); });
});

},

render: function render () { var slot = this.$slots.default; var vnode = getFirstComponentChild(slot); var componentOptions = vnode && vnode.componentOptions; if (componentOptions) { // check pattern var name = getComponentName(componentOptions); var ref = this; var include = ref.include; var exclude = ref.exclude; if ( // not included (include && (!name || !matches(include, name))) || // excluded (exclude && name && matches(exclude, name)) ) { return vnode }

  var ref$1 = this;
  var cache = ref$1.cache;
  var keys = ref$1.keys;
  var key = vnode.key == null
    // same constructor may get registered as different local components
    // so cid alone is not enough (#3269)
    ? componentOptions.Ctor.cid + (componentOptions.tag ? ("::" + (componentOptions.tag)) : '')
    : vnode.key;
  if (cache[key]) {
    vnode.componentInstance = cache[key].componentInstance;
    // make current key freshest
    remove(keys, key);
    keys.push(key);
  } else {
    cache[key] = vnode;
    keys.push(key);
    // prune oldest entry
    if (this.max && keys.length > parseInt(this.max)) {
      pruneCacheEntry(cache, keys[0], keys, this._vnode);
    }
  }

  vnode.data.keepAlive = true;
}
return vnode || (slot && slot[0])

} }

var builtInComponents = { KeepAlive: KeepAlive }

/* */

// exposed util methods. // NOTE: these are not considered part of the public API - avoid relying on // them unless you are aware of the risk. Vue.util = { warn: warn, extend: extend, mergeOptions: mergeOptions, defineReactive: defineReactive };

Vue.set = set; Vue.delete = del; Vue.nextTick = nextTick;

Vue.options = Object.create(null); ASSET_TYPES.forEach(function (type) { Vue.options[type + 's'] = Object.create(null); });

// this is used to identify the "base" constructor to extend all plain-object // components with in Weex's multi-instance scenarios. Vue.options._base = Vue;

extend(Vue.options.components, builtInComponents);

initUse(Vue); initMixin$1(Vue); initExtend(Vue); initAssetRegisters(Vue); }

initGlobalAPI(Vue);

Object.defineProperty(Vue.prototype, '$isServer', { get: isServerRendering });

Object.defineProperty(Vue.prototype, '$ssrContext', { get: function get () { /* istanbul ignore next */ return this.$vnode && this.$vnode.ssrContext } });

// expose FunctionalRenderContext for ssr runtime helper installation Object.defineProperty(Vue, 'FunctionalRenderContext', { value: FunctionalRenderContext });

Vue.version = '2.5.16';

/* */

// these are reserved for web because they are directly compiled away // during template compilation var isReservedAttr = makeMap('style,class');

// attributes that should be using props for binding var acceptValue = makeMap('input,textarea,option,select,progress'); var mustUseProp = function (tag, type, attr) { return ( (attr === 'value' && acceptValue(tag)) && type !== 'button' || (attr === 'selected' && tag === 'option') || (attr === 'checked' && tag === 'input') || (attr === 'muted' && tag === 'video') ) };

var isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck');

var 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,translate,' + 'truespeed,typemustmatch,visible' );

var xlinkNS = 'http://www.w3.org/1999/xlink';

var isXlink = function (name) { return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink' };

var getXlinkProp = function (name) { return isXlink(name) ? name.slice(6, name.length) : '' };

var isFalsyAttrValue = function (val) { return val == null || val === false };

/* */

function mergeClassData (child, parent) { return { staticClass: concat(child.staticClass, parent.staticClass), class: isDef(child.class) ? [child.class, parent.class] : parent.class } }

function renderClass ( staticClass, dynamicClass ) { if (isDef(staticClass) || isDef(dynamicClass)) { return concat(staticClass, stringifyClass(dynamicClass)) } /* istanbul ignore next */ return '' }

function concat (a, b) { return a ? b ? (a + ' ' + b) : a : (b || '') }

function stringifyClass (value) { if (Array.isArray(value)) { return stringifyArray(value) } if (isObject(value)) { return stringifyObject(value) } if (typeof value === 'string') { return value } /* istanbul ignore next */ return '' }

function stringifyObject (value) { var res = ''; for (var key in value) { if (value[key]) { if (res) { res += ' '; } res += key; } } return res }

/* */

var namespaceMap = { svg: 'http://www.w3.org/2000/svg', math: 'http://www.w3.org/1998/Math/MathML' };

var 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 // contain child elements. var 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 );

var isPreTag = function (tag) { return tag === 'pre'; };

var isReservedTag = function (tag) { return isHTMLTag(tag) || isSVG(tag) };

function getTagNamespace (tag) { if (isSVG(tag)) { return 'svg' } // basic support for MathML // note it doesn't support other MathML elements being component roots if (tag === 'math') { return 'math' } }

var unknownElementCache = Object.create(null); function isUnknownElement (tag) { /* istanbul ignore if / if (!inBrowser) { return true } if (isReservedTag(tag)) { return false } tag = tag.toLowerCase(); / istanbul ignore if */ if (unknownElementCache[tag] != null) { return unknownElementCache[tag] } var el = document.createElement(tag); if (tag.indexOf('-') > -1) { // http://stackoverflow.com/a/28210364/1070244 return (unknownElementCache[tag] = ( el.constructor === window.HTMLUnknownElement || el.constructor === window.HTMLElement )) } else { return (unknownElementCache[tag] = /HTMLUnknownElement/.test(el.toString())) } }

var isTextInputType = makeMap('text,number,password,search,email,tel,url');

/* */

/**

Query an element selector if it's not an element already. */ function query (el) { if (typeof el === 'string') { var selected = document.querySelector(el); if (!selected) { "development" !== 'production' && warn( 'Cannot find element: ' + el ); return document.createElement('div') } return selected } else { return el } }

/* */

function createElement$1 (tagName, vnode) { var elm = document.createElement(tagName); if (tagName !== 'select') { return elm } // false or null will remove the attribute but undefined will not if (vnode.data && vnode.data.attrs && vnode.data.attrs.multiple !== undefined) { elm.setAttribute('multiple', 'multiple'); } return elm }

function createElementNS (namespace, tagName) { return document.createElementNS(namespaceMap[namespace], tagName) }

function createTextNode (text) { return document.createTextNode(text) }

function createComment (text) { return document.createComment(text) }

function insertBefore (parentNode, newNode, referenceNode) { parentNode.insertBefore(newNode, referenceNode); }

function removeChild (node, child) { node.removeChild(child); }

function appendChild (node, child) { node.appendChild(child); }

function parentNode (node) { return node.parentNode }

function nextSibling (node) { return node.nextSibling }

function tagName (node) { return node.tagName }

function setTextContent (node, text) { node.textContent = text; }

function setStyleScope (node, scopeId) { node.setAttribute(scopeId, ''); }

var nodeOps = Object.freeze({ createElement: createElement$1, createElementNS: createElementNS, createTextNode: createTextNode, createComment: createComment, insertBefore: insertBefore, removeChild: removeChild, appendChild: appendChild, parentNode: parentNode, nextSibling: nextSibling, tagName: tagName, setTextContent: setTextContent, setStyleScope: setStyleScope });

/* */

function registerRef (vnode, isRemoval) { var key = vnode.data.ref; if (!isDef(key)) { return }

/**

Virtual DOM patching algorithm based on Snabbdom by
Simon Friis Vindum (@paldepind)
Licensed under the MIT License
https://github.com/paldepind/snabbdom/blob/master/LICENSE
modified by Evan You (@yyx990803)
Not type-checking this because this file is perf-critical and the cost
of making flow understand it is not worth it. */

var emptyNode = new VNode('', {}, []);

var hooks = ['create', 'activate', 'update', 'remove', 'destroy'];

function sameVnode (a, b) { return ( a.key === b.key && ( ( a.tag === b.tag && a.isComment === b.isComment && isDef(a.data) === isDef(b.data) && sameInputType(a, b) ) || ( isTrue(a.isAsyncPlaceholder) && a.asyncFactory === b.asyncFactory && isUndef(b.asyncFactory.error) ) ) ) }

function sameInputType (a, b) { if (a.tag !== 'input') { return true } var i; var typeA = isDef(i = a.data) && isDef(i = i.attrs) && i.type; var typeB = isDef(i = b.data) && isDef(i = i.attrs) && i.type; return typeA === typeB || isTextInputType(typeA) && isTextInputType(typeB) }

function createKeyToOldIdx (children, beginIdx, endIdx) { var i, key; var map = {}; for (i = beginIdx; i <= endIdx; ++i) { key = children[i].key; if (isDef(key)) { map[key] = i; } } return map }

function createPatchFunction (backend) { var i, j; var cbs = {};

var modules = backend.modules; var nodeOps = backend.nodeOps;

for (i = 0; i < hooks.length; ++i) { cbs[hooks[i]] = []; for (j = 0; j < modules.length; ++j) { if (isDef(modules[j][hooks[i]])) { cbs[hooks[i]].push(modules[j][hooks[i]]); } } }

function emptyNodeAt (elm) { return new VNode(nodeOps.tagName(elm).toLowerCase(), {}, [], undefined, elm) }

function createRmCb (childElm, listeners) { function remove () { if (--remove.listeners === 0) { removeNode(childElm); } } remove.listeners = listeners; return remove }

function removeNode (el) { var parent = nodeOps.parentNode(el); // element may have already been removed due to v-html / v-text if (isDef(parent)) { nodeOps.removeChild(parent, el); } }

function isUnknownElement$$1 (vnode, inVPre) { return ( !inVPre && !vnode.ns && !( config.ignoredElements.length && config.ignoredElements.some(function (ignore) { return isRegExp(ignore) ? ignore.test(vnode.tag) : ignore === vnode.tag }) ) && config.isUnknownElement(vnode.tag) ) }

var creatingElmInVPre = 0;

function createElm ( vnode, insertedVnodeQueue, parentElm, refElm, nested, ownerArray, index ) { if (isDef(vnode.elm) && isDef(ownerArray)) { // This vnode was used in a previous render! // now it's used as a new node, overwriting its elm would cause // potential patch errors down the road when it's used as an insertion // reference node. Instead, we clone the node on-demand before creating // associated DOM element for it. vnode = ownerArray[index] = cloneVNode(vnode); }

vnode.isRootInsert = !nested; // for transition enter check
if (createComponent(vnode, insertedVnodeQueue, parentElm, refElm)) {
  return
}

var data = vnode.data;
var children = vnode.children;
var tag = vnode.tag;
if (isDef(tag)) {
  {
    if (data && data.pre) {
      creatingElmInVPre++;
    }
    if (isUnknownElement$$1(vnode, creatingElmInVPre)) {
      warn(
        'Unknown custom element: <' + tag + '> - did you ' +
        'register the component correctly? For recursive components, ' +
        'make sure to provide the "name" option.',
        vnode.context
      );
    }
  }

  vnode.elm = vnode.ns
    ? nodeOps.createElementNS(vnode.ns, tag)
    : nodeOps.createElement(tag, vnode);
  setScope(vnode);

  /* istanbul ignore if */
  {
    createChildren(vnode, children, insertedVnodeQueue);
    if (isDef(data)) {
      invokeCreateHooks(vnode, insertedVnodeQueue);
    }
    insert(parentElm, vnode.elm, refElm);
  }

  if ("development" !== 'production' && data && data.pre) {
    creatingElmInVPre--;
  }
} else if (isTrue(vnode.isComment)) {
  vnode.elm = nodeOps.createComment(vnode.text);
  insert(parentElm, vnode.elm, refElm);
} else {
  vnode.elm = nodeOps.createTextNode(vnode.text);
  insert(parentElm, vnode.elm, refElm);
}

}

function insert (parent, elm, ref$$1) { if (isDef(parent)) { if (isDef(ref$$1)) { if (ref$$1.parentNode === parent) { nodeOps.insertBefore(parent, elm, ref$$1); } } else { nodeOps.appendChild(parent, elm); } } }

function isPatchable (vnode) { while (vnode.componentInstance) { vnode = vnode.componentInstance._vnode; } return isDef(vnode.tag) }

// set scope id attribute for scoped CSS. // this is implemented as a special case to avoid the overhead // of going through the normal attribute patching process. function setScope (vnode) { var i; if (isDef(i = vnode.fnScopeId)) { nodeOps.setStyleScope(vnode.elm, i); } else { var ancestor = vnode; while (ancestor) { if (isDef(i = ancestor.context) && isDef(i = i.$options._scopeId)) { nodeOps.setStyleScope(vnode.elm, i); } ancestor = ancestor.parent; } } // for slot content they should also get the scopeId from the host instance. if (isDef(i = activeInstance) && i !== vnode.context && i !== vnode.fnContext && isDef(i = i.$options._scopeId) ) { nodeOps.setStyleScope(vnode.elm, i); } }

function addVnodes (parentElm, refElm, vnodes, startIdx, endIdx, insertedVnodeQueue) { for (; startIdx <= endIdx; ++startIdx) { createElm(vnodes[startIdx], insertedVnodeQueue, parentElm, refElm, false, vnodes, startIdx); } }

function invokeDestroyHook (vnode) { var i, j; var data = vnode.data; if (isDef(data)) { if (isDef(i = data.hook) && isDef(i = i.destroy)) { i(vnode); } for (i = 0; i < cbs.destroy.length; ++i) { cbs.destroyi; } } if (isDef(i = vnode.children)) { for (j = 0; j < vnode.children.length; ++j) { invokeDestroyHook(vnode.children[j]); } } }

function updateChildren (parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) { var oldStartIdx = 0; var newStartIdx = 0; var oldEndIdx = oldCh.length - 1; var oldStartVnode = oldCh[0]; var oldEndVnode = oldCh[oldEndIdx]; var newEndIdx = newCh.length - 1; var newStartVnode = newCh[0]; var newEndVnode = newCh[newEndIdx]; var oldKeyToIdx, idxInOld, vnodeToMove, refElm;

// removeOnly is a special flag used only by <transition-group>
// to ensure removed elements stay in correct relative positions
// during leaving transitions
var canMove = !removeOnly;

{
  checkDuplicateKeys(newCh);
}

while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {
  if (isUndef(oldStartVnode)) {
    oldStartVnode = oldCh[++oldStartIdx]; // Vnode has been moved left
  } else if (isUndef(oldEndVnode)) {
    oldEndVnode = oldCh[--oldEndIdx];
  } else if (sameVnode(oldStartVnode, newStartVnode)) {
    patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue);
    oldStartVnode = oldCh[++oldStartIdx];
    newStartVnode = newCh[++newStartIdx];
  } else if (sameVnode(oldEndVnode, newEndVnode)) {
    patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue);
    oldEndVnode = oldCh[--oldEndIdx];
    newEndVnode = newCh[--newEndIdx];
  } else if (sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right
    patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue);
    canMove && nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm));
    oldStartVnode = oldCh[++oldStartIdx];
    newEndVnode = newCh[--newEndIdx];
  } else if (sameVnode(oldEndVnode, newStartVnode)) { // Vnode moved left
    patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue);
    canMove && nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm);
    oldEndVnode = oldCh[--oldEndIdx];
    newStartVnode = newCh[++newStartIdx];
  } else {
    if (isUndef(oldKeyToIdx)) { oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx); }
    idxInOld = isDef(newStartVnode.key)
      ? oldKeyToIdx[newStartVnode.key]
      : findIdxInOld(newStartVnode, oldCh, oldStartIdx, oldEndIdx);
    if (isUndef(idxInOld)) { // New element
      createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
    } else {
      vnodeToMove = oldCh[idxInOld];
      if (sameVnode(vnodeToMove, newStartVnode)) {
        patchVnode(vnodeToMove, newStartVnode, insertedVnodeQueue);
        oldCh[idxInOld] = undefined;
        canMove && nodeOps.insertBefore(parentElm, vnodeToMove.elm, oldStartVnode.elm);
      } else {
        // same key but different element. treat as new element
        createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
      }
    }
    newStartVnode = newCh[++newStartIdx];
  }
}
if (oldStartIdx > oldEndIdx) {
  refElm = isUndef(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;
  addVnodes(parentElm, refElm, newCh, newStartIdx, newEndIdx, insertedVnodeQueue);
} else if (newStartIdx > newEndIdx) {
  removeVnodes(parentElm, oldCh, oldStartIdx, oldEndIdx);
}

}

function findIdxInOld (node, oldCh, start, end) { for (var i = start; i < end; i++) { var c = oldCh[i]; if (isDef(c) && sameVnode(node, c)) { return i } } }

function patchVnode (oldVnode, vnode, insertedVnodeQueue, removeOnly) { if (oldVnode === vnode) { return }

var elm = vnode.elm = oldVnode.elm;

if (isTrue(oldVnode.isAsyncPlaceholder)) {
  if (isDef(vnode.asyncFactory.resolved)) {
    hydrate(oldVnode.elm, vnode, insertedVnodeQueue);
  } else {
    vnode.isAsyncPlaceholder = true;
  }
  return
}

// reuse element for static trees.
// note we only do this if the vnode is cloned -
// if the new node is not cloned it means the render functions have been
// reset by the hot-reload-api and we need to do a proper re-render.
if (isTrue(vnode.isStatic) &&
  isTrue(oldVnode.isStatic) &&
  vnode.key === oldVnode.key &&
  (isTrue(vnode.isCloned) || isTrue(vnode.isOnce))
) {
  vnode.componentInstance = oldVnode.componentInstance;
  return
}

var i;
var data = vnode.data;
if (isDef(data) && isDef(i = data.hook) && isDef(i = i.prepatch)) {
  i(oldVnode, vnode);
}

var oldCh = oldVnode.children;
var ch = vnode.children;
if (isDef(data) && isPatchable(vnode)) {
  for (i = 0; i < cbs.update.length; ++i) { cbs.update[i](oldVnode, vnode); }
  if (isDef(i = data.hook) && isDef(i = i.update)) { i(oldVnode, vnode); }
}
if (isUndef(vnode.text)) {
  if (isDef(oldCh) && isDef(ch)) {
    if (oldCh !== ch) { updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly); }
  } else if (isDef(ch)) {
    if (isDef(oldVnode.text)) { nodeOps.setTextContent(elm, ''); }
    addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue);
  } else if (isDef(oldCh)) {
    removeVnodes(elm, oldCh, 0, oldCh.length - 1);
  } else if (isDef(oldVnode.text)) {
    nodeOps.setTextContent(elm, '');
  }
} else if (oldVnode.text !== vnode.text) {
  nodeOps.setTextContent(elm, vnode.text);
}
if (isDef(data)) {
  if (isDef(i = data.hook) && isDef(i = i.postpatch)) { i(oldVnode, vnode); }
}

}

var hydrationBailed = false; // list of modules that can skip create hook during hydration because they // are already rendered on the client or has no need for initialization // Note: style is excluded because it relies on initial clone for future // deep updates (#7063). var isRenderedModule = makeMap('attrs,class,staticClass,staticStyle,key');

// Note: this is a browser-only function so we can assume elms are DOM nodes. function hydrate (elm, vnode, insertedVnodeQueue, inVPre) { var i; var tag = vnode.tag; var data = vnode.data; var children = vnode.children; inVPre = inVPre || (data && data.pre); vnode.elm = elm;

if (isTrue(vnode.isComment) && isDef(vnode.asyncFactory)) {
  vnode.isAsyncPlaceholder = true;
  return true
}
// assert node match
{
  if (!assertNodeMatch(elm, vnode, inVPre)) {
    return false
  }
}
if (isDef(data)) {
  if (isDef(i = data.hook) && isDef(i = i.init)) { i(vnode, true /* hydrating */); }
  if (isDef(i = vnode.componentInstance)) {
    // child component. it should have hydrated its own tree.
    initComponent(vnode, insertedVnodeQueue);
    return true
  }
}
if (isDef(tag)) {
  if (isDef(children)) {
    // empty element, allow client to pick up and populate children
    if (!elm.hasChildNodes()) {
      createChildren(vnode, children, insertedVnodeQueue);
    } else {
      // v-html and domProps: innerHTML
      if (isDef(i = data) && isDef(i = i.domProps) && isDef(i = i.innerHTML)) {
        if (i !== elm.innerHTML) {
          /* istanbul ignore if */
          if ("development" !== 'production' &&
            typeof console !== 'undefined' &&
            !hydrationBailed
          ) {
            hydrationBailed = true;
            console.warn('Parent: ', elm);
            console.warn('server innerHTML: ', i);
            console.warn('client innerHTML: ', elm.innerHTML);
          }
          return false
        }
      } else {
        // iterate and compare children lists
        var childrenMatch = true;
        var childNode = elm.firstChild;
        for (var i$1 = 0; i$1 < children.length; i$1++) {
          if (!childNode || !hydrate(childNode, children[i$1], insertedVnodeQueue, inVPre)) {
            childrenMatch = false;
            break
          }
          childNode = childNode.nextSibling;
        }
        // if childNode is not null, it means the actual childNodes list is
        // longer than the virtual children list.
        if (!childrenMatch || childNode) {
          /* istanbul ignore if */
          if ("development" !== 'production' &&
            typeof console !== 'undefined' &&
            !hydrationBailed
          ) {
            hydrationBailed = true;
            console.warn('Parent: ', elm);
            console.warn('Mismatching childNodes vs. VNodes: ', elm.childNodes, children);
          }
          return false
        }
      }
    }
  }
  if (isDef(data)) {
    var fullInvoke = false;
    for (var key in data) {
      if (!isRenderedModule(key)) {
        fullInvoke = true;
        invokeCreateHooks(vnode, insertedVnodeQueue);
        break
      }
    }
    if (!fullInvoke && data['class']) {
      // ensure collecting deps for deep class bindings for future updates
      traverse(data['class']);
    }
  }
} else if (elm.data !== vnode.text) {
  elm.data = vnode.text;
}
return true

}

function assertNodeMatch (node, vnode, inVPre) { if (isDef(vnode.tag)) { return vnode.tag.indexOf('vue-component') === 0 || ( !isUnknownElement$$1(vnode, inVPre) && vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase()) ) } else { return node.nodeType === (vnode.isComment ? 8 : 3) } }

return function patch (oldVnode, vnode, hydrating, removeOnly, parentElm, refElm) { if (isUndef(vnode)) { if (isDef(oldVnode)) { invokeDestroyHook(oldVnode); } return }

var isInitialPatch = false;
var insertedVnodeQueue = [];

if (isUndef(oldVnode)) {
  // empty mount (likely as component), create new root element
  isInitialPatch = true;
  createElm(vnode, insertedVnodeQueue, parentElm, refElm);
} else {
  var isRealElement = isDef(oldVnode.nodeType);
  if (!isRealElement && sameVnode(oldVnode, vnode)) {
    // patch existing root node
    patchVnode(oldVnode, vnode, insertedVnodeQueue, removeOnly);
  } else {
    if (isRealElement) {
      // mounting to a real element
      // check if this is server-rendered content and if we can perform
      // a successful hydration.
      if (oldVnode.nodeType === 1 && oldVnode.hasAttribute(SSR_ATTR)) {
        oldVnode.removeAttribute(SSR_ATTR);
        hydrating = true;
      }
      if (isTrue(hydrating)) {
        if (hydrate(oldVnode, vnode, insertedVnodeQueue)) {
          invokeInsertHook(vnode, insertedVnodeQueue, true);
          return oldVnode
        } else {
          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.'
          );
        }
      }
      // either not server-rendered, or hydration failed.
      // create an empty node and replace it
      oldVnode = emptyNodeAt(oldVnode);
    }

    // replacing existing element
    var oldElm = oldVnode.elm;
    var parentElm$1 = nodeOps.parentNode(oldElm);

    // create new node
    createElm(
      vnode,
      insertedVnodeQueue,
      // extremely rare edge case: do not insert if old element is in a
      // leaving transition. Only happens when combining transition +
      // keep-alive + HOCs. (#4590)
      oldElm._leaveCb ? null : parentElm$1,
      nodeOps.nextSibling(oldElm)
    );

    // update parent placeholder node element, recursively
    if (isDef(vnode.parent)) {
      var ancestor = vnode.parent;
      var patchable = isPatchable(vnode);
      while (ancestor) {
        for (var i = 0; i < cbs.destroy.length; ++i) {
          cbs.destroy[i](ancestor);
        }
        ancestor.elm = vnode.elm;
        if (patchable) {
          for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
            cbs.create[i$1](emptyNode, ancestor);
          }
          // #6513
          // invoke insert hooks that may have been merged by create hooks.
          // e.g. for directives that uses the "inserted" hook.
          var insert = ancestor.data.hook.insert;
          if (insert.merged) {
            // start at index 1 to avoid re-invoking component mounted hook
            for (var i$2 = 1; i$2 < insert.fns.length; i$2++) {
              insert.fns[i$2]();
            }
          }
        } else {
          registerRef(ancestor);
        }
        ancestor = ancestor.parent;
      }
    }

    // destroy old node
    if (isDef(parentElm$1)) {
      removeVnodes(parentElm$1, [oldVnode], 0, 0);
    } else if (isDef(oldVnode.tag)) {
      invokeDestroyHook(oldVnode);
    }
  }
}

invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch);
return vnode.elm

} }

/* */

var directives = { create: updateDirectives, update: updateDirectives, destroy: function unbindDirectives (vnode) { updateDirectives(vnode, emptyNode); } }

function updateDirectives (oldVnode, vnode) { if (oldVnode.data.directives || vnode.data.directives) { _update(oldVnode, vnode); } }

function _update (oldVnode, vnode) { var isCreate = oldVnode === emptyNode; var isDestroy = vnode === emptyNode; var oldDirs = normalizeDirectives$1(oldVnode.data.directives, oldVnode.context); var newDirs = normalizeDirectives$1(vnode.data.directives, vnode.context);

var dirsWithInsert = []; var dirsWithPostpatch = [];

var key, oldDir, dir; for (key in newDirs) { oldDir = oldDirs[key]; dir = newDirs[key]; if (!oldDir) { // new directive, bind callHook$1(dir, 'bind', vnode, oldVnode); if (dir.def && dir.def.inserted) { dirsWithInsert.push(dir); } } else { // existing directive, update dir.oldValue = oldDir.value; callHook$1(dir, 'update', vnode, oldVnode); if (dir.def && dir.def.componentUpdated) { dirsWithPostpatch.push(dir); } } }

if (dirsWithInsert.length) { var callInsert = function () { for (var i = 0; i < dirsWithInsert.length; i++) { callHook$1(dirsWithInsert[i], 'inserted', vnode, oldVnode); } }; if (isCreate) { mergeVNodeHook(vnode, 'insert', callInsert); } else { callInsert(); } }

if (dirsWithPostpatch.length) { mergeVNodeHook(vnode, 'postpatch', function () { for (var i = 0; i < dirsWithPostpatch.length; i++) { callHook$1(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode); } }); }

if (!isCreate) { for (key in oldDirs) { if (!newDirs[key]) { // no longer present, unbind callHook$1(oldDirs[key], 'unbind', oldVnode, oldVnode, isDestroy); } } } }

var emptyModifiers = Object.create(null);

function getRawDirName (dir) { return dir.rawName || ((dir.name) + "." + (Object.keys(dir.modifiers || {}).join('.'))) }

var baseModules = [ ref, directives ]

/* */

for (key in attrs) { cur = attrs[key]; old = oldAttrs[key]; if (old !== cur) { setAttr(elm, key, cur); } } // #4391: in IE9, setting type can reset value for input[type=radio] // #6666: IE/Edge forces progress value down to 1 before setting a max /* istanbul ignore if */ if ((isIE || isEdge) && attrs.value !== oldAttrs.value) { setAttr(elm, 'value', attrs.value); } for (key in oldAttrs) { if (isUndef(attrs[key])) { if (isXlink(key)) { elm.removeAttributeNS(xlinkNS, getXlinkProp(key)); } else if (!isEnumeratedAttr(key)) { elm.removeAttribute(key); } } } }

var attrs = { create: updateAttrs, update: updateAttrs }

/* */

function updateClass (oldVnode, vnode) { var el = vnode.elm; var data = vnode.data; var oldData = oldVnode.data; if ( isUndef(data.staticClass) && isUndef(data.class) && ( isUndef(oldData) || ( isUndef(oldData.staticClass) && isUndef(oldData.class) ) ) ) { return }

var cls = genClassForVnode(vnode);

// handle transition classes var transitionClass = el._transitionClasses; if (isDef(transitionClass)) { cls = concat(cls, stringifyClass(transitionClass)); }

// set the class if (cls !== el._prevClass) { el.setAttribute('class', cls); el._prevClass = cls; } }

var klass = { create: updateClass, update: updateClass }

/* */

var validDivisionCharRE = /[\w).+-_$]]/;

function parseFilters (exp) { var inSingle = false; var inDouble = false; var inTemplateString = false; var inRegex = false; var curly = 0; var square = 0; var paren = 0; var lastFilterIndex = 0; var c, prev, i, expression, filters;

for (i = 0; i < exp.length; i++) { prev = c; c = exp.charCodeAt(i); if (inSingle) { if (c === 0x27 && prev !== 0x5C) { inSingle = false; } } else if (inDouble) { if (c === 0x22 && prev !== 0x5C) { inDouble = false; } } else if (inTemplateString) { if (c === 0x60 && prev !== 0x5C) { inTemplateString = false; } } else if (inRegex) { if (c === 0x2f && prev !== 0x5C) { inRegex = false; } } else if ( c === 0x7C && // pipe exp.charCodeAt(i + 1) !== 0x7C && exp.charCodeAt(i - 1) !== 0x7C && !curly && !square && !paren ) { if (expression === undefined) { // first filter, end of expression lastFilterIndex = i + 1; expression = exp.slice(0, i).trim(); } else { pushFilter(); } } else { switch (c) { case 0x22: inDouble = true; break // " case 0x27: inSingle = true; break // ' case 0x60: inTemplateString = true; break // ` case 0x28: paren++; break // ( case 0x29: paren--; break // ) case 0x5B: square++; break // [ case 0x5D: square--; break // ] case 0x7B: curly++; break // { case 0x7D: curly--; break // } } if (c === 0x2f) { // / var j = i - 1; var p = (void 0); // find first non-whitespace prev char for (; j >= 0; j--) { p = exp.charAt(j); if (p !== ' ') { break } } if (!p || !validDivisionCharRE.test(p)) { inRegex = true; } } } }

if (expression === undefined) { expression = exp.slice(0, i).trim(); } else if (lastFilterIndex !== 0) { pushFilter(); }

function pushFilter () { (filters || (filters = [])).push(exp.slice(lastFilterIndex, i).trim()); lastFilterIndex = i + 1; }

if (filters) { for (i = 0; i < filters.length; i++) { expression = wrapFilter(expression, filters[i]); } }

return expression }

/* */

function baseWarn (msg) { console.error(("[Vue compiler]: " + msg)); }

function pluckModuleFunction ( modules, key ) { return modules ? modules.map(function (m) { return m[key]; }).filter(function (_) { return _; }) : [] }

function addProp (el, name, value) { (el.props || (el.props = [])).push({ name: name, value: value }); el.plain = false; }

function addAttr (el, name, value) { (el.attrs || (el.attrs = [])).push({ name: name, value: value }); el.plain = false; }

// add a raw attr (use this in preTransforms) function addRawAttr (el, name, value) { el.attrsMap[name] = value; el.attrsList.push({ name: name, value: value }); }

function addDirective ( el, name, rawName, value, arg, modifiers ) { (el.directives || (el.directives = [])).push({ name: name, rawName: rawName, value: value, arg: arg, modifiers: modifiers }); el.plain = false; }

function addHandler ( el, name, value, modifiers, important, warn ) { modifiers = modifiers || emptyObject; // warn prevent and passive modifier /* istanbul ignore if */ if ( "development" !== 'production' && warn && modifiers.prevent && modifiers.passive ) { warn( 'passive and prevent can't be used together. ' + 'Passive handler can't prevent default event.' ); }

// check capture modifier if (modifiers.capture) { delete modifiers.capture; name = '!' + name; // mark the event as captured } if (modifiers.once) { delete modifiers.once; name = '~' + name; // mark the event as once } /* istanbul ignore if */ if (modifiers.passive) { delete modifiers.passive; name = '&' + name; // mark the event as passive }

// normalize click.right and click.middle since they don't actually fire // this is technically browser-specific, but at least for now browsers are // the only target envs that have right/middle clicks. if (name === 'click') { if (modifiers.right) { name = 'contextmenu'; delete modifiers.right; } else if (modifiers.middle) { name = 'mouseup'; } }

var events; if (modifiers.native) { delete modifiers.native; events = el.nativeEvents || (el.nativeEvents = {}); } else { events = el.events || (el.events = {}); }

var newHandler = { value: value.trim() }; if (modifiers !== emptyObject) { newHandler.modifiers = modifiers; }

el.plain = false; }

function getBindingAttr ( el, name, getStatic ) { var dynamicValue = getAndRemoveAttr(el, ':' + name) || getAndRemoveAttr(el, 'v-bind:' + name); if (dynamicValue != null) { return parseFilters(dynamicValue) } else if (getStatic !== false) { var staticValue = getAndRemoveAttr(el, name); if (staticValue != null) { return JSON.stringify(staticValue) } } }

// note: this only removes the attr from the Array (attrsList) so that it // doesn't get processed by processAttrs. // By default it does NOT remove it from the map (attrsMap) because the map is // needed during codegen. function getAndRemoveAttr ( el, name, removeFromMap ) { var val; if ((val = el.attrsMap[name]) != null) { var list = el.attrsList; for (var i = 0, l = list.length; i < l; i++) { if (list[i].name === name) { list.splice(i, 1); break } } } if (removeFromMap) { delete el.attrsMap[name]; } return val }

/* */

/**

Cross-platform code generation for component v-model */ function genComponentModel ( el, value, modifiers ) { var ref = modifiers || {}; var number = ref.number; var trim = ref.trim;

var baseValueExpression = '$$v'; var valueExpression = baseValueExpression; if (trim) { valueExpression = "(typeof " + baseValueExpression + " === 'string'" + "? " + baseValueExpression + ".trim()" + ": " + baseValueExpression + ")"; } if (number) { valueExpression = "_n(" + valueExpression + ")"; } var assignment = genAssignmentCode(value, valueExpression);

el.model = { value: ("(" + value + ")"), expression: (""" + value + """), callback: ("function (" + baseValueExpression + ") {" + assignment + "}") }; }

/**

Cross-platform codegen helper for generating v-model value assignment code. */ function genAssignmentCode ( value, assignment ) { var res = parseModel(value); if (res.key === null) { return (value + "=" + assignment) } else { return ("$set(" + (res.exp) + ", " + (res.key) + ", " + assignment + ")") } }

/**

Parse a v-model expression into a base path and a final key segment.
Handles both dot-path and possible square brackets.
Possible cases:
- test
- test[key]
- test[test1[key]]
- test["a"][key]
- xxx.test[a[a].test1[key]]
- test.xxx.a["asa"][test1[key]]

*/

var len; var str; var chr; var index$1; var expressionPos; var expressionEndPos;

function parseModel (val) { // Fix vuejs/vue#7730 // allow v-model="obj.val " (trailing whitespace) val = val.trim(); len = val.length;

if (val.indexOf('[') < 0 || val.lastIndexOf(']') < len - 1) { index$1 = val.lastIndexOf('.'); if (index$1 > -1) { return { exp: val.slice(0, index$1), key: '"' + val.slice(index$1 + 1) + '"' } } else { return { exp: val, key: null } } }

str = val; index$1 = expressionPos = expressionEndPos = 0;

while (!eof()) { chr = next(); /* istanbul ignore if */ if (isStringStart(chr)) { parseString(chr); } else if (chr === 0x5B) { parseBracket(chr); } }

return { exp: val.slice(0, expressionPos), key: val.slice(expressionPos + 1, expressionEndPos) } }

function next () { return str.charCodeAt(++index$1) }

function eof () { return index$1 >= len }

function isStringStart (chr) { return chr === 0x22 || chr === 0x27 }

function parseString (chr) { var stringQuote = chr; while (!eof()) { chr = next(); if (chr === stringQuote) { break } } }

/* */

var warn$1;

// in some cases, the event used has to be determined at runtime // so we used some reserved tokens during compile. var RANGE_TOKEN = '__r'; var CHECKBOX_RADIO_TOKEN = '__c';

function model ( el, dir, _warn ) { warn$1 = _warn; var value = dir.value; var modifiers = dir.modifiers; var tag = el.tag; var type = el.attrsMap.type;

{ // inputs with type="file" are read only and setting the input's // value will throw an error. if (tag === 'input' && type === 'file') { warn$1( "<" + (el.tag) + " v-model="" + value + "" type="file">:\n" + "File inputs are read only. Use a v-on:change listener instead." ); } }

if (el.component) { genComponentModel(el, value, modifiers); // component v-model doesn't need extra runtime return false } else if (tag === 'select') { genSelect(el, value, modifiers); } else if (tag === 'input' && type === 'checkbox') { genCheckboxModel(el, value, modifiers); } else if (tag === 'input' && type === 'radio') { genRadioModel(el, value, modifiers); } else if (tag === 'input' || tag === 'textarea') { genDefaultModel(el, value, modifiers); } else if (!config.isReservedTag(tag)) { genComponentModel(el, value, modifiers); // component v-model doesn't need extra runtime return false } else { warn$1( "<" + (el.tag) + " v-model="" + value + "">: " + "v-model is not supported on this element type. " + 'If you are working with contenteditable, it's recommended to ' + 'wrap a library dedicated for that purpose inside a custom component.' ); }

// ensure runtime directive metadata return true }

function genRadioModel ( el, value, modifiers ) { var number = modifiers && modifiers.number; var valueBinding = getBindingAttr(el, 'value') || 'null'; valueBinding = number ? ("_n(" + valueBinding + ")") : valueBinding; addProp(el, 'checked', ("_q(" + value + "," + valueBinding + ")")); addHandler(el, 'change', genAssignmentCode(value, valueBinding), null, true); }

function genSelect ( el, value, modifiers ) { var number = modifiers && modifiers.number; var selectedVal = "Array.prototype.filter" + ".call($event.target.options,function(o){return o.selected})" + ".map(function(o){var val = "_value" in o ? o._value : o.value;" + "return " + (number ? '_n(val)' : 'val') + "})";

var assignment = '$event.target.multiple ? $$selectedVal : $$selectedVal[0]'; var code = "var $$selectedVal = " + selectedVal + ";"; code = code + " " + (genAssignmentCode(value, assignment)); addHandler(el, 'change', code, null, true); }

function genDefaultModel ( el, value, modifiers ) { var type = el.attrsMap.type;

// warn if v-bind:value conflicts with v-model // except for inputs with v-bind:type { var value$1 = el.attrsMap['v-bind:value'] || el.attrsMap[':value']; var typeBinding = el.attrsMap['v-bind:type'] || el.attrsMap[':type']; if (value$1 && !typeBinding) { var binding = el.attrsMap['v-bind:value'] ? 'v-bind:value' : ':value'; warn$1( binding + "="" + value$1 + "" conflicts with v-model on the same element " + 'because the latter already expands to a value binding internally' ); } }

var ref = modifiers || {}; var lazy = ref.lazy; var number = ref.number; var trim = ref.trim; var needCompositionGuard = !lazy && type !== 'range'; var event = lazy ? 'change' : type === 'range' ? RANGE_TOKEN : 'input';

var valueExpression = '$event.target.value'; if (trim) { valueExpression = "$event.target.value.trim()"; } if (number) { valueExpression = "_n(" + valueExpression + ")"; }

var code = genAssignmentCode(value, valueExpression); if (needCompositionGuard) { code = "if($event.target.composing)return;" + code; }

addProp(el, 'value', ("(" + value + ")")); addHandler(el, event, code, null, true); if (trim || number) { addHandler(el, 'blur', '$forceUpdate()'); } }

/* */

// normalize v-model event tokens that can only be determined at runtime. // it's important to place the event as the first in the array because // the whole point is ensuring the v-model callback gets called before // user-attached handlers. function normalizeEvents (on) { /* istanbul ignore if / if (isDef(on[RANGE_TOKEN])) { // IE input[type=range] only supports change event var event = isIE ? 'change' : 'input'; on[event] = [].concat(on[RANGE_TOKEN], on[event] || []); delete on[RANGE_TOKEN]; } // This was originally intended to fix #4521 but no longer necessary // after 2.5. Keeping it for backwards compat with generated code from < 2.4 / istanbul ignore if */ if (isDef(on[CHECKBOX_RADIO_TOKEN])) { on.change = [].concat(on[CHECKBOX_RADIO_TOKEN], on.change || []); delete on[CHECKBOX_RADIO_TOKEN]; } }

var target$1;

function remove$2 ( event, handler, capture, _target ) { (_target || target$1).removeEventListener( event, handler._withTask || handler, capture ); }

var events = { create: updateDOMListeners, update: updateDOMListeners }

/* */

for (key in oldProps) { if (isUndef(props[key])) { elm[key] = ''; } } for (key in props) { cur = props[key]; // ignore children if the node has textContent or innerHTML, // as these will throw away existing DOM nodes and cause removal errors // on subsequent patches (#3360) if (key === 'textContent' || key === 'innerHTML') { if (vnode.children) { vnode.children.length = 0; } if (cur === oldProps[key]) { continue } // #6601 work around Chrome version <= 55 bug where single textNode // replaced by innerHTML/textContent retains its parentNode property if (elm.childNodes.length === 1) { elm.removeChild(elm.childNodes[0]); } }

if (key === 'value') {
  // store value as _value as well since
  // non-string values will be stringified
  elm._value = cur;
  // avoid resetting cursor position when value is the same
  var strCur = isUndef(cur) ? '' : String(cur);
  if (shouldUpdateValue(elm, strCur)) {
    elm.value = strCur;
  }
} else {
  elm[key] = cur;
}

} }

// check platforms/web/util/attrs.js acceptValue

function shouldUpdateValue (elm, checkVal) { return (!elm.composing && ( elm.tagName === 'OPTION' || isNotInFocusAndDirty(elm, checkVal) || isDirtyWithModifiers(elm, checkVal) )) }

function isNotInFocusAndDirty (elm, checkVal) { // return true when textbox (.number and .trim) loses focus and its value is // not equal to the updated value var notInFocus = true; // #6157 // work around IE bug when accessing document.activeElement in an iframe try { notInFocus = document.activeElement !== elm; } catch (e) {} return notInFocus && elm.value !== checkVal }

function isDirtyWithModifiers (elm, newVal) { var value = elm.value; var modifiers = elm._vModifiers; // injected by v-model runtime if (isDef(modifiers)) { if (modifiers.lazy) { // inputs with lazy should only be updated when not in focus return false } if (modifiers.number) { return toNumber(value) !== toNumber(newVal) } if (modifiers.trim) { return value.trim() !== newVal.trim() } } return value !== newVal }

var domProps = { create: updateDOMProps, update: updateDOMProps }

/* */

// merge static and dynamic style data on the same vnode function normalizeStyleData (data) { var style = normalizeStyleBinding(data.style); // static style is pre-processed into an object during compilation // and is always a fresh object, so it's safe to merge into it return data.staticStyle ? extend(data.staticStyle, style) : style }

// normalize possible array / string values into Object function normalizeStyleBinding (bindingStyle) { if (Array.isArray(bindingStyle)) { return toObject(bindingStyle) } if (typeof bindingStyle === 'string') { return parseStyleText(bindingStyle) } return bindingStyle }

/**

parent component style should be after child's
so that parent component's style could override it */ function getStyle (vnode, checkChild) { var res = {}; var styleData;

if (checkChild) { var childNode = vnode; while (childNode.componentInstance) { childNode = childNode.componentInstance._vnode; if ( childNode && childNode.data && (styleData = normalizeStyleData(childNode.data)) ) { extend(res, styleData); } } }

if ((styleData = normalizeStyleData(vnode.data))) { extend(res, styleData); }

var parentNode = vnode; while ((parentNode = parentNode.parent)) { if (parentNode.data && (styleData = normalizeStyleData(parentNode.data))) { extend(res, styleData); } } return res }

/* */

var vendorNames = ['Webkit', 'Moz', 'ms'];

var emptyStyle; var normalize = cached(function (prop) { emptyStyle = emptyStyle || document.createElement('div').style; prop = camelize(prop); if (prop !== 'filter' && (prop in emptyStyle)) { return prop } var capName = prop.charAt(0).toUpperCase() + prop.slice(1); for (var i = 0; i < vendorNames.length; i++) { var name = vendorNames[i] + capName; if (name in emptyStyle) { return name } } });

function updateStyle (oldVnode, vnode) { var data = vnode.data; var oldData = oldVnode.data;

if (isUndef(data.staticStyle) && isUndef(data.style) && isUndef(oldData.staticStyle) && isUndef(oldData.style) ) { return }

var cur, name; var el = vnode.elm; var oldStaticStyle = oldData.staticStyle; var oldStyleBinding = oldData.normalizedStyle || oldData.style || {};

// if static style exists, stylebinding already merged into it when doing normalizeStyleData var oldStyle = oldStaticStyle || oldStyleBinding;

var style = normalizeStyleBinding(vnode.data.style) || {};

// store normalized style under a different key for next diff // make sure to clone it if it's reactive, since the user likely wants // to mutate it. vnode.data.normalizedStyle = isDef(style.ob) ? extend({}, style) : style;

var newStyle = getStyle(vnode, true);

for (name in oldStyle) { if (isUndef(newStyle[name])) { setProp(el, name, ''); } } for (name in newStyle) { cur = newStyle[name]; if (cur !== oldStyle[name]) { // ie9 setting to null has no effect, must use empty string setProp(el, name, cur == null ? '' : cur); } } }

var style = { create: updateStyle, update: updateStyle }

/* */

/**

Add class with compatibility for SVG since classList is not supported on
SVG elements in IE / function addClass (el, cls) { / istanbul ignore if */ if (!cls || !(cls = cls.trim())) { return }

/* istanbul ignore else */ if (el.classList) { if (cls.indexOf(' ') > -1) { cls.split(/\s+/).forEach(function (c) { return el.classList.add(c); }); } else { el.classList.add(cls); } } else { var cur = " " + (el.getAttribute('class') || '') + " "; if (cur.indexOf(' ' + cls + ' ') < 0) { el.setAttribute('class', (cur + cls).trim()); } } }

/**

Remove class with compatibility for SVG since classList is not supported on
SVG elements in IE / function removeClass (el, cls) { / istanbul ignore if */ if (!cls || !(cls = cls.trim())) { return }

/* istanbul ignore else */ if (el.classList) { if (cls.indexOf(' ') > -1) { cls.split(/\s+/).forEach(function (c) { return el.classList.remove(c); }); } else { el.classList.remove(cls); } if (!el.classList.length) { el.removeAttribute('class'); } } else { var cur = " " + (el.getAttribute('class') || '') + " "; var tar = ' ' + cls + ' '; while (cur.indexOf(tar) >= 0) { cur = cur.replace(tar, ' '); } cur = cur.trim(); if (cur) { el.setAttribute('class', cur); } else { el.removeAttribute('class'); } } }

/* */

var autoCssTransition = cached(function (name) { return { enterClass: (name + "-enter"), enterToClass: (name + "-enter-to"), enterActiveClass: (name + "-enter-active"), leaveClass: (name + "-leave"), leaveToClass: (name + "-leave-to"), leaveActiveClass: (name + "-leave-active") } });

var hasTransition = inBrowser && !isIE9; var TRANSITION = 'transition'; var ANIMATION = 'animation';

// Transition property/event sniffing var transitionProp = 'transition'; var transitionEndEvent = 'transitionend'; var animationProp = 'animation'; var animationEndEvent = 'animationend'; if (hasTransition) { /* istanbul ignore if */ if (window.ontransitionend === undefined && window.onwebkittransitionend !== undefined ) { transitionProp = 'WebkitTransition'; transitionEndEvent = 'webkitTransitionEnd'; } if (window.onanimationend === undefined && window.onwebkitanimationend !== undefined ) { animationProp = 'WebkitAnimation'; animationEndEvent = 'webkitAnimationEnd'; } }

// binding to window is necessary to make hot reload work in IE in strict mode var raf = inBrowser ? window.requestAnimationFrame ? window.requestAnimationFrame.bind(window) : setTimeout : /* istanbul ignore next */ function (fn) { return fn(); };

function nextFrame (fn) { raf(function () { raf(fn); }); }

function addTransitionClass (el, cls) { var transitionClasses = el._transitionClasses || (el._transitionClasses = []); if (transitionClasses.indexOf(cls) < 0) { transitionClasses.push(cls); addClass(el, cls); } }

function removeTransitionClass (el, cls) { if (el._transitionClasses) { remove(el._transitionClasses, cls); } removeClass(el, cls); }

var transformRE = /\b(transform|all)(,|$)/;

function getTransitionInfo (el, expectedType) { var styles = window.getComputedStyle(el); var transitionDelays = styles[transitionProp + 'Delay'].split(', '); var transitionDurations = styles[transitionProp + 'Duration'].split(', '); var transitionTimeout = getTimeout(transitionDelays, transitionDurations); var animationDelays = styles[animationProp + 'Delay'].split(', '); var animationDurations = styles[animationProp + 'Duration'].split(', '); var animationTimeout = getTimeout(animationDelays, animationDurations);

var type; var timeout = 0; var propCount = 0; /* istanbul ignore if */ if (expectedType === TRANSITION) { if (transitionTimeout > 0) { type = TRANSITION; timeout = transitionTimeout; propCount = transitionDurations.length; } } else if (expectedType === ANIMATION) { if (animationTimeout > 0) { type = ANIMATION; timeout = animationTimeout; propCount = animationDurations.length; } } else { timeout = Math.max(transitionTimeout, animationTimeout); type = timeout > 0 ? transitionTimeout > animationTimeout ? TRANSITION : ANIMATION : null; propCount = type ? type === TRANSITION ? transitionDurations.length : animationDurations.length : 0; } var hasTransform = type === TRANSITION && transformRE.test(styles[transitionProp + 'Property']); return { type: type, timeout: timeout, propCount: propCount, hasTransform: hasTransform } }

function getTimeout (delays, durations) { /* istanbul ignore next */ while (delays.length < durations.length) { delays = delays.concat(delays); }

return Math.max.apply(null, durations.map(function (d, i) { return toMs(d) + toMs(delays[i]) })) }

function toMs (s) { return Number(s.slice(0, -1)) * 1000 }

/* */

function enter (vnode, toggleDisplay) { var el = vnode.elm;

// call leave callback now if (isDef(el._leaveCb)) { el._leaveCb.cancelled = true; el._leaveCb(); }

var data = resolveTransition(vnode.data.transition); if (isUndef(data)) { return }

/* istanbul ignore if */ if (isDef(el._enterCb) || el.nodeType !== 1) { return }

var css = data.css; var type = data.type; var enterClass = data.enterClass; var enterToClass = data.enterToClass; var enterActiveClass = data.enterActiveClass; var appearClass = data.appearClass; var appearToClass = data.appearToClass; var appearActiveClass = data.appearActiveClass; var beforeEnter = data.beforeEnter; var enter = data.enter; var afterEnter = data.afterEnter; var enterCancelled = data.enterCancelled; var beforeAppear = data.beforeAppear; var appear = data.appear; var afterAppear = data.afterAppear; var appearCancelled = data.appearCancelled; var duration = data.duration;

// activeInstance will always be the component managing this // transition. One edge case to check is when the is placed // as the root node of a child component. In that case we need to check // 's parent for appear check. var context = activeInstance; var transitionNode = activeInstance.$vnode; while (transitionNode && transitionNode.parent) { transitionNode = transitionNode.parent; context = transitionNode.context; }

var isAppear = !context._isMounted || !vnode.isRootInsert;

if (isAppear && !appear && appear !== '') { return }

var startClass = isAppear && appearClass ? appearClass : enterClass; var activeClass = isAppear && appearActiveClass ? appearActiveClass : enterActiveClass; var toClass = isAppear && appearToClass ? appearToClass : enterToClass;

var beforeEnterHook = isAppear ? (beforeAppear || beforeEnter) : beforeEnter; var enterHook = isAppear ? (typeof appear === 'function' ? appear : enter) : enter; var afterEnterHook = isAppear ? (afterAppear || afterEnter) : afterEnter; var enterCancelledHook = isAppear ? (appearCancelled || enterCancelled) : enterCancelled;

var explicitEnterDuration = toNumber( isObject(duration) ? duration.enter : duration );

if ("development" !== 'production' && explicitEnterDuration != null) { checkDuration(explicitEnterDuration, 'enter', vnode); }

var expectsCSS = css !== false && !isIE9; var userWantsControl = getHookArgumentsLength(enterHook);

if (!vnode.data.show) { // remove pending leave element on enter by injecting an insert hook mergeVNodeHook(vnode, 'insert', function () { var parent = el.parentNode; var pendingNode = parent && parent._pending && parent._pending[vnode.key]; if (pendingNode && pendingNode.tag === vnode.tag && pendingNode.elm._leaveCb ) { pendingNode.elm._leaveCb(); } enterHook && enterHook(el, cb); }); }

// start enter transition beforeEnterHook && beforeEnterHook(el); if (expectsCSS) { addTransitionClass(el, startClass); addTransitionClass(el, activeClass); nextFrame(function () { removeTransitionClass(el, startClass); if (!cb.cancelled) { addTransitionClass(el, toClass); if (!userWantsControl) { if (isValidDuration(explicitEnterDuration)) { setTimeout(cb, explicitEnterDuration); } else { whenTransitionEnds(el, type, cb); } } } }); }

if (vnode.data.show) { toggleDisplay && toggleDisplay(); enterHook && enterHook(el, cb); }

if (!expectsCSS && !userWantsControl) { cb(); } }

function leave (vnode, rm) { var el = vnode.elm;

// call enter callback now if (isDef(el._enterCb)) { el._enterCb.cancelled = true; el._enterCb(); }

var data = resolveTransition(vnode.data.transition); if (isUndef(data) || el.nodeType !== 1) { return rm() }

/* istanbul ignore if */ if (isDef(el._leaveCb)) { return }

var css = data.css; var type = data.type; var leaveClass = data.leaveClass; var leaveToClass = data.leaveToClass; var leaveActiveClass = data.leaveActiveClass; var beforeLeave = data.beforeLeave; var leave = data.leave; var afterLeave = data.afterLeave; var leaveCancelled = data.leaveCancelled; var delayLeave = data.delayLeave; var duration = data.duration;

var expectsCSS = css !== false && !isIE9; var userWantsControl = getHookArgumentsLength(leave);

var explicitLeaveDuration = toNumber( isObject(duration) ? duration.leave : duration );

if ("development" !== 'production' && isDef(explicitLeaveDuration)) { checkDuration(explicitLeaveDuration, 'leave', vnode); }

if (delayLeave) { delayLeave(performLeave); } else { performLeave(); }

// only used in dev mode function checkDuration (val, name, vnode) { if (typeof val !== 'number') { warn( " explicit " + name + " duration is not a valid number - " + "got " + (JSON.stringify(val)) + ".", vnode.context ); } else if (isNaN(val)) { warn( " explicit " + name + " duration is NaN - " + 'the duration expression might be incorrect.', vnode.context ); } }

function isValidDuration (val) { return typeof val === 'number' && !isNaN(val) }

/**

Normalize a transition hook's argument length. The hook may be:
- a merged hook (invoker) with the original in .fns
- a wrapped component method (check ._length)
- a plain function (.length) */ function getHookArgumentsLength (fn) { if (isUndef(fn)) { return false } var invokerFns = fn.fns; if (isDef(invokerFns)) { // invoker return getHookArgumentsLength( Array.isArray(invokerFns) ? invokerFns[0] : invokerFns ) } else { return (fn._length || fn.length) > 1 } }

function enter (, vnode) { if (vnode.data.show !== true) { enter(vnode); } }

var transition = inBrowser ? { create: _enter, activate: _enter, remove: function remove$$1 (vnode, rm) { /* istanbul ignore else */ if (vnode.data.show !== true) { leave(vnode, rm); } else { rm(); } } } : {}

var platformModules = [ attrs, klass, events, domProps, style, transition ]

/* */

// the directive module should be applied last, after all // built-in modules have been applied. var modules = platformModules.concat(baseModules);

var patch = createPatchFunction({ nodeOps: nodeOps, modules: modules });

/**

Not type checking this file because flow doesn't like attaching
properties to Elements. */

/* istanbul ignore if */ if (isIE9) { // http://www.matts411.com/post/internet-explorer-9-oninput/ document.addEventListener('selectionchange', function () { var el = document.activeElement; if (el && el.vmodel) { trigger(el, 'input'); } }); }

componentUpdated: function componentUpdated (el, binding, vnode) { if (vnode.tag === 'select') { setSelected(el, binding, vnode.context); // in case the options rendered by v-for have changed, // it's possible that the value is out-of-sync with the rendered options. // detect such cases and filter out values that no longer has a matching // option in the DOM. var prevOptions = el._vOptions; var curOptions = el._vOptions = [].map.call(el.options, getValue); if (curOptions.some(function (o, i) { return !looseEqual(o, prevOptions[i]); })) { // trigger change event if // no matching option found for at least one value var needReset = el.multiple ? binding.value.some(function (v) { return hasNoMatchingOption(v, curOptions); }) : binding.value !== binding.oldValue && hasNoMatchingOption(binding.value, curOptions); if (needReset) { trigger(el, 'change'); } } } } };

function setSelected (el, binding, vm) { actuallySetSelected(el, binding, vm); /* istanbul ignore if */ if (isIE || isEdge) { setTimeout(function () { actuallySetSelected(el, binding, vm); }, 0); } }

function hasNoMatchingOption (value, options) { return options.every(function (o) { return !looseEqual(o, value); }) }

function getValue (option) { return '_value' in option ? option._value : option.value }

function onCompositionStart (e) { e.target.composing = true; }

function onCompositionEnd (e) { // prevent triggering an input event for no reason if (!e.target.composing) { return } e.target.composing = false; trigger(e.target, 'input'); }

function trigger (el, type) { var e = document.createEvent('HTMLEvents'); e.initEvent(type, true, true); el.dispatchEvent(e); }

/* */

// recursively search for possible transition defined inside the component root function locateNode (vnode) { return vnode.componentInstance && (!vnode.data || !vnode.data.transition) ? locateNode(vnode.componentInstance._vnode) : vnode }

var show = { bind: function bind (el, ref, vnode) { var value = ref.value;

vnode = locateNode(vnode);
var transition$$1 = vnode.data && vnode.data.transition;
var originalDisplay = el.__vOriginalDisplay =
  el.style.display === 'none' ? '' : el.style.display;
if (value && transition$$1) {
  vnode.data.show = true;
  enter(vnode, function () {
    el.style.display = originalDisplay;
  });
} else {
  el.style.display = value ? originalDisplay : 'none';
}

},

update: function update (el, ref, vnode) { var value = ref.value; var oldValue = ref.oldValue;

/* istanbul ignore if */
if (!value === !oldValue) { return }
vnode = locateNode(vnode);
var transition$$1 = vnode.data && vnode.data.transition;
if (transition$$1) {
  vnode.data.show = true;
  if (value) {
    enter(vnode, function () {
      el.style.display = el.__vOriginalDisplay;
    });
  } else {
    leave(vnode, function () {
      el.style.display = 'none';
    });
  }
} else {
  el.style.display = value ? el.__vOriginalDisplay : 'none';
}

},

unbind: function unbind ( el, binding, vnode, oldVnode, isDestroy ) { if (!isDestroy) { el.style.display = el.__vOriginalDisplay; } } }

var platformDirectives = { model: directive, show: show }

/* */

// Provides transition support for a single element/component. // supports transition mode (out-in / in-out)

var transitionProps = { name: String, appear: Boolean, css: Boolean, mode: String, type: String, enterClass: String, leaveClass: String, enterToClass: String, leaveToClass: String, enterActiveClass: String, leaveActiveClass: String, appearClass: String, appearActiveClass: String, appearToClass: String, duration: [Number, String, Object] };

// in case the child is also an abstract component, e.g. // we want to recursively retrieve the real component to be rendered function getRealChild (vnode) { var compOptions = vnode && vnode.componentOptions; if (compOptions && compOptions.Ctor.options.abstract) { return getRealChild(getFirstComponentChild(compOptions.children)) } else { return vnode } }

function placeholder (h, rawChild) { if (/\d-keep-alive$/.test(rawChild.tag)) { return h('keep-alive', { props: rawChild.componentOptions.propsData }) } }

function hasParentTransition (vnode) { while ((vnode = vnode.parent)) { if (vnode.data.transition) { return true } } }

function isSameChild (child, oldChild) { return oldChild.key === child.key && oldChild.tag === child.tag }

var Transition = { name: 'transition', props: transitionProps, abstract: true,

render: function render (h) { var this$1 = this;

var children = this.$slots.default;
if (!children) {
  return
}

// filter out text nodes (possible whitespaces)
children = children.filter(function (c) { return c.tag || isAsyncPlaceholder(c); });
/* istanbul ignore if */
if (!children.length) {
  return
}

// warn multiple elements
if ("development" !== 'production' && children.length > 1) {
  warn(
    '<transition> can only be used on a single element. Use ' +
    '<transition-group> for lists.',
    this.$parent
  );
}

var mode = this.mode;

// warn invalid mode
if ("development" !== 'production' &&
  mode && mode !== 'in-out' && mode !== 'out-in'
) {
  warn(
    'invalid <transition> mode: ' + mode,
    this.$parent
  );
}

var rawChild = children[0];

// if this is a component root node and the component's
// parent container node also has transition, skip.
if (hasParentTransition(this.$vnode)) {
  return rawChild
}

// apply transition data to child
// use getRealChild() to ignore abstract components e.g. keep-alive
var child = getRealChild(rawChild);
/* istanbul ignore if */
if (!child) {
  return rawChild
}

if (this._leaving) {
  return placeholder(h, rawChild)
}

// ensure a key that is unique to the vnode type and to this transition
// component instance. This key will be used to remove pending leaving nodes
// during entering.
var id = "__transition-" + (this._uid) + "-";
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;

var data = (child.data || (child.data = {})).transition = extractTransitionData(this);
var oldRawChild = this._vnode;
var oldChild = getRealChild(oldRawChild);

// mark v-show
// so that the transition module can hand over the control to the directive
if (child.data.directives && child.data.directives.some(function (d) { return d.name === 'show'; })) {
  child.data.show = true;
}

if (
  oldChild &&
  oldChild.data &&
  !isSameChild(child, oldChild) &&
  !isAsyncPlaceholder(oldChild) &&
  // #6687 component root is a comment node
  !(oldChild.componentInstance && oldChild.componentInstance._vnode.isComment)
) {
  // replace old child transition data with fresh one
  // important for dynamic transitions!
  var oldData = oldChild.data.transition = extend({}, data);
  // handle transition mode
  if (mode === 'out-in') {
    // return placeholder node and queue update when leave finishes
    this._leaving = true;
    mergeVNodeHook(oldData, 'afterLeave', function () {
      this$1._leaving = false;
      this$1.$forceUpdate();
    });
    return placeholder(h, rawChild)
  } else if (mode === 'in-out') {
    if (isAsyncPlaceholder(child)) {
      return oldRawChild
    }
    var delayedLeave;
    var performLeave = function () { delayedLeave(); };
    mergeVNodeHook(data, 'afterEnter', performLeave);
    mergeVNodeHook(data, 'enterCancelled', performLeave);
    mergeVNodeHook(oldData, 'delayLeave', function (leave) { delayedLeave = leave; });
  }
}

return rawChild

} }

/* */

// Provides transition support for list items. // supports move transitions using the FLIP technique.

// Because the vdom's children update algorithm is "unstable" - i.e. // it doesn't guarantee the relative positioning of removed elements, // we force transition-group to update its children into two passes: // in the first pass, we remove all nodes that need to be removed, // triggering their leaving transition; in the second pass, we insert/move // into the final desired state. This way in the second pass removed // nodes will remain where they should be.

var props = extend({ tag: String, moveClass: String }, transitionProps);

delete props.mode;

var TransitionGroup = { props: props,

render: function render (h) { var tag = this.tag || this.$vnode.data.tag || 'span'; var map = Object.create(null); var prevChildren = this.prevChildren = this.children; var rawChildren = this.$slots.default || []; var children = this.children = []; var transitionData = extractTransitionData(this);

for (var i = 0; i < rawChildren.length; i++) {
  var c = rawChildren[i];
  if (c.tag) {
    if (c.key != null && String(c.key).indexOf('__vlist') !== 0) {
      children.push(c);
      map[c.key] = c
      ;(c.data || (c.data = {})).transition = transitionData;
    } else {
      var opts = c.componentOptions;
      var name = opts ? (opts.Ctor.options.name || opts.tag || '') : c.tag;
      warn(("<transition-group> children must be keyed: <" + name + ">"));
    }
  }
}

if (prevChildren) {
  var kept = [];
  var removed = [];
  for (var i$1 = 0; i$1 < prevChildren.length; i$1++) {
    var c$1 = prevChildren[i$1];
    c$1.data.transition = transitionData;
    c$1.data.pos = c$1.elm.getBoundingClientRect();
    if (map[c$1.key]) {
      kept.push(c$1);
    } else {
      removed.push(c$1);
    }
  }
  this.kept = h(tag, null, kept);
  this.removed = removed;
}

return h(tag, null, children)

},

beforeUpdate: function beforeUpdate () { // force removing pass this.patch( this._vnode, this.kept, false, // hydrating true // removeOnly (!important, avoids unnecessary moves) ); this._vnode = this.kept; },

updated: function updated () { var children = this.prevChildren; var moveClass = this.moveClass || ((this.name || 'v') + '-move'); if (!children.length || !this.hasMove(children[0].elm, moveClass)) { return }

// we divide the work into three loops to avoid mixing DOM reads and writes
// in each iteration - which helps prevent layout thrashing.
children.forEach(callPendingCbs);
children.forEach(recordPosition);
children.forEach(applyTranslation);

// force reflow to put everything in position
// assign to this to avoid being removed in tree-shaking
// $flow-disable-line
this._reflow = document.body.offsetHeight;

children.forEach(function (c) {
  if (c.data.moved) {
    var el = c.elm;
    var s = el.style;
    addTransitionClass(el, moveClass);
    s.transform = s.WebkitTransform = s.transitionDuration = '';
    el.addEventListener(transitionEndEvent, el._moveCb = function cb (e) {
      if (!e || /transform$/.test(e.propertyName)) {
        el.removeEventListener(transitionEndEvent, cb);
        el._moveCb = null;
        removeTransitionClass(el, moveClass);
      }
    });
  }
});

},

methods: { hasMove: function hasMove (el, moveClass) { /* istanbul ignore if / if (!hasTransition) { return false } / istanbul ignore if */ if (this._hasMove) { return this._hasMove } // Detect whether an element with the move class applied has // CSS transitions. Since the element may be inside an entering // transition at this very moment, we make a clone of it and remove // all other transition classes applied to ensure only the move class // is applied. var clone = el.cloneNode(); if (el._transitionClasses) { el._transitionClasses.forEach(function (cls) { removeClass(clone, cls); }); } addClass(clone, moveClass); clone.style.display = 'none'; this.$el.appendChild(clone); var info = getTransitionInfo(clone); this.$el.removeChild(clone); return (this._hasMove = info.hasTransform) } } }

function callPendingCbs (c) { /* istanbul ignore if / if (c.elm._moveCb) { c.elm._moveCb(); } / istanbul ignore if */ if (c.elm._enterCb) { c.elm._enterCb(); } }

function recordPosition (c) { c.data.newPos = c.elm.getBoundingClientRect(); }

function applyTranslation (c) { var oldPos = c.data.pos; var newPos = c.data.newPos; var dx = oldPos.left - newPos.left; var dy = oldPos.top - newPos.top; if (dx || dy) { c.data.moved = true; var s = c.elm.style; s.transform = s.WebkitTransform = "translate(" + dx + "px," + dy + "px)"; s.transitionDuration = '0s'; } }

var platformComponents = { Transition: Transition, TransitionGroup: TransitionGroup }

/* */

// install platform specific utils Vue.config.mustUseProp = mustUseProp; Vue.config.isReservedTag = isReservedTag; Vue.config.isReservedAttr = isReservedAttr; Vue.config.getTagNamespace = getTagNamespace; Vue.config.isUnknownElement = isUnknownElement;

// install platform runtime directives & components extend(Vue.options.directives, platformDirectives); extend(Vue.options.components, platformComponents);

// install platform patch function Vue.prototype.patch = inBrowser ? patch : noop;

// public mount method Vue.prototype.$mount = function ( el, hydrating ) { el = el && inBrowser ? query(el) : undefined; return mountComponent(this, el, hydrating) };

// devtools global hook /* istanbul ignore next */ if (inBrowser) { setTimeout(function () { if (config.devtools) { if (devtools) { devtools.emit('init', Vue); } else if ( "development" !== 'production' && "development" !== 'test' && isChrome ) { console[console.info ? 'info' : 'log']( 'Download the Vue Devtools extension for a better development experience:\n' + 'https://github.com/vuejs/vue-devtools' ); } } if ("development" !== 'production' && "development" !== 'test' && config.productionTip !== false && typeof console !== 'undefined' ) { console[console.info ? 'info' : 'log']( "You are running Vue in development mode.\n" + "Make sure to turn on production mode when deploying for production.\n" + "See more tips at https://vuejs.org/guide/deployment.html" ); } }, 0); }

/* */

var defaultTagRE = /{{((?:.|\n)+?)}}/g; var regexEscapeRE = /[-.*+?^${}()|[]/\]/g;

var buildRegex = cached(function (delimiters) { var open = delimiters[0].replace(regexEscapeRE, '\$&'); var close = delimiters[1].replace(regexEscapeRE, '\$&'); return new RegExp(open + '((?:.|\n)+?)' + close, 'g') });

/* */

function transformNode (el, options) { var warn = options.warn || baseWarn; var staticClass = getAndRemoveAttr(el, 'class'); if ("development" !== 'production' && staticClass) { var res = parseText(staticClass, options.delimiters); if (res) { warn( "class="" + staticClass + "": " + 'Interpolation inside attributes has been removed. ' + 'Use v-bind or the colon shorthand instead. For example, ' + 'instead of

, use

.' ); } } if (staticClass) { el.staticClass = JSON.stringify(staticClass); } var classBinding = getBindingAttr(el, 'class', false /* getStatic */); if (classBinding) { el.classBinding = classBinding; } }

function genData (el) { var data = ''; if (el.staticClass) { data += "staticClass:" + (el.staticClass) + ","; } if (el.classBinding) { data += "class:" + (el.classBinding) + ","; } return data }

var klass$1 = { staticKeys: ['staticClass'], transformNode: transformNode, genData: genData }

/* */

function transformNode$1 (el, options) { var warn = options.warn || baseWarn; var staticStyle = getAndRemoveAttr(el, 'style'); if (staticStyle) { /* istanbul ignore if */ { var res = parseText(staticStyle, options.delimiters); if (res) { warn( "style="" + staticStyle + "": " + 'Interpolation inside attributes has been removed. ' + 'Use v-bind or the colon shorthand instead. For example, ' + 'instead of

, use

.' ); } } el.staticStyle = JSON.stringify(parseStyleText(staticStyle)); }

var styleBinding = getBindingAttr(el, 'style', false /* getStatic */); if (styleBinding) { el.styleBinding = styleBinding; } }

function genData$1 (el) { var data = ''; if (el.staticStyle) { data += "staticStyle:" + (el.staticStyle) + ","; } if (el.styleBinding) { data += "style:(" + (el.styleBinding) + "),"; } return data }

var style$1 = { staticKeys: ['staticStyle'], transformNode: transformNode$1, genData: genData$1 }

/* */

var decoder;

var he = { decode: function decode (html) { decoder = decoder || document.createElement('div'); decoder.innerHTML = html; return decoder.textContent } }

/* */

var isUnaryTag = makeMap( 'area,base,br,col,embed,frame,hr,img,input,isindex,keygen,' + 'link,meta,param,source,track,wbr' );

// Elements that you can, intentionally, leave open // (and which close themselves) var canBeLeftOpenTag = makeMap( 'colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr,source' );

// HTML5 tags https://html.spec.whatwg.org/multipage/indices.html#elements-3 // Phrasing Content https://html.spec.whatwg.org/multipage/dom.html#phrasing-content var isNonPhrasingTag = makeMap( 'address,article,aside,base,blockquote,body,caption,col,colgroup,dd,' + 'details,dialog,div,dl,dt,fieldset,figcaption,figure,footer,form,' + 'h1,h2,h3,h4,h5,h6,head,header,hgroup,hr,html,legend,li,menuitem,meta,' + 'optgroup,option,param,rp,rt,source,style,summary,tbody,td,tfoot,th,thead,' + 'title,tr,track' );

/**

Not type-checking this file because it's mostly vendor code. */

/*!

HTML Parser By John Resig (ejohn.org)
Modified by Juriy "kangax" Zaytsev
Original code by Erik Arvidsson, Mozilla Public License
http://erik.eae.net/simplehtmlparser/simplehtmlparser.js */

// Regular Expressions for parsing tags and attributes var attribute = /^\s*([^\s"'<>\/=]+)(?:\s*(=)\s*(?:"([^"])"+|'([^'])'+|([^\s"'=<>`]+)))?/; // could use https://www.w3.org/TR/1999/REC-xml-names-19990114/#NT-QName // but for Vue templates we can enforce a simple charset var ncname = '[a-zA-Z_][\w\-\.]'; var qnameCapture = "((?:" + ncname + "\:)?" + ncname + ")"; var startTagOpen = new RegExp(("^<" + qnameCapture)); var startTagClose = /^\s(/?)>/; var endTag = new RegExp(("^<\/" + qnameCapture + "[^>]*>")); var doctype = /^]+>/i; // #7298: escape - to avoid being pased as HTML comment when inlined in page var comment = /^<!--/; var conditionalComment = /^<![/;

var IS_REGEX_CAPTURING_BROKEN = false; 'x'.replace(/x(.)?/g, function (m, g) { IS_REGEX_CAPTURING_BROKEN = g === ''; });

// Special Elements (can contain anything) var isPlainTextElement = makeMap('script,style,textarea', true); var reCache = {};

var decodingMap = { '<': '<', '>': '>', '"': '"', '&': '&', ' ': '\n', ' ': '\t' }; var encodedAttr = /&(?:lt|gt|quot|amp);/g; var encodedAttrWithNewLines = /&(?:lt|gt|quot|amp|#10|#9);/g;

// #5992 var isIgnoreNewlineTag = makeMap('pre,textarea', true); var shouldIgnoreFirstNewline = function (tag, html) { return tag && isIgnoreNewlineTag(tag) && html[0] === '\n'; };

function decodeAttr (value, shouldDecodeNewlines) { var re = shouldDecodeNewlines ? encodedAttrWithNewLines : encodedAttr; return value.replace(re, function (match) { return decodingMap[match]; }) }

function parseHTML (html, options) { var stack = []; var expectHTML = options.expectHTML; var isUnaryTag$$1 = options.isUnaryTag || no; var canBeLeftOpenTag$$1 = options.canBeLeftOpenTag || no; var index = 0; var last, lastTag; while (html) { last = html; // Make sure we're not in a plaintext content element like script/style if (!lastTag || !isPlainTextElement(lastTag)) { var textEnd = html.indexOf('<'); if (textEnd === 0) { // Comment: if (comment.test(html)) { var commentEnd = html.indexOf('-->');

      if (commentEnd >= 0) {
        if (options.shouldKeepComment) {
          options.comment(html.substring(4, commentEnd));
        }
        advance(commentEnd + 3);
        continue
      }
    }

    // http://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment
    if (conditionalComment.test(html)) {
      var conditionalEnd = html.indexOf(']>');

      if (conditionalEnd >= 0) {
        advance(conditionalEnd + 2);
        continue
      }
    }

    // Doctype:
    var doctypeMatch = html.match(doctype);
    if (doctypeMatch) {
      advance(doctypeMatch[0].length);
      continue
    }

    // End tag:
    var endTagMatch = html.match(endTag);
    if (endTagMatch) {
      var curIndex = index;
      advance(endTagMatch[0].length);
      parseEndTag(endTagMatch[1], curIndex, index);
      continue
    }

    // Start tag:
    var startTagMatch = parseStartTag();
    if (startTagMatch) {
      handleStartTag(startTagMatch);
      if (shouldIgnoreFirstNewline(lastTag, html)) {
        advance(1);
      }
      continue
    }
  }

  var text = (void 0), rest = (void 0), next = (void 0);
  if (textEnd >= 0) {
    rest = html.slice(textEnd);
    while (
      !endTag.test(rest) &&
      !startTagOpen.test(rest) &&
      !comment.test(rest) &&
      !conditionalComment.test(rest)
    ) {
      // < in plain text, be forgiving and treat it as text
      next = rest.indexOf('<', 1);
      if (next < 0) { break }
      textEnd += next;
      rest = html.slice(textEnd);
    }
    text = html.substring(0, textEnd);
    advance(textEnd);
  }

  if (textEnd < 0) {
    text = html;
    html = '';
  }

  if (options.chars && text) {
    options.chars(text);
  }
} else {
  var endTagLength = 0;
  var stackedTag = lastTag.toLowerCase();
  var reStackedTag = reCache[stackedTag] || (reCache[stackedTag] = new RegExp('([\\s\\S]*?)(</' + stackedTag + '[^>]*>)', 'i'));
  var rest$1 = html.replace(reStackedTag, function (all, text, endTag) {
    endTagLength = endTag.length;
    if (!isPlainTextElement(stackedTag) && stackedTag !== 'noscript') {
      text = text
        .replace(/<!\--([\s\S]*?)-->/g, '$1') // #7298
        .replace(/<!\[CDATA\[([\s\S]*?)]]>/g, '$1');
    }
    if (shouldIgnoreFirstNewline(stackedTag, text)) {
      text = text.slice(1);
    }
    if (options.chars) {
      options.chars(text);
    }
    return ''
  });
  index += html.length - rest$1.length;
  html = rest$1;
  parseEndTag(stackedTag, index - endTagLength, index);
}

if (html === last) {
  options.chars && options.chars(html);
  if ("development" !== 'production' && !stack.length && options.warn) {
    options.warn(("Mal-formatted tag at end of template: \"" + html + "\""));
  }
  break
}

}

// Clean up any remaining tags parseEndTag();

function advance (n) { index += n; html = html.substring(n); }

function handleStartTag (match) { var tagName = match.tagName; var unarySlash = match.unarySlash;

if (expectHTML) {
  if (lastTag === 'p' && isNonPhrasingTag(tagName)) {
    parseEndTag(lastTag);
  }
  if (canBeLeftOpenTag$$1(tagName) && lastTag === tagName) {
    parseEndTag(tagName);
  }
}

var unary = isUnaryTag$$1(tagName) || !!unarySlash;

var l = match.attrs.length;
var attrs = new Array(l);
for (var i = 0; i < l; i++) {
  var args = match.attrs[i];
  // hackish work around FF bug https://bugzilla.mozilla.org/show_bug.cgi?id=369778
  if (IS_REGEX_CAPTURING_BROKEN && args[0].indexOf('""') === -1) {
    if (args[3] === '') { delete args[3]; }
    if (args[4] === '') { delete args[4]; }
    if (args[5] === '') { delete args[5]; }
  }
  var value = args[3] || args[4] || args[5] || '';
  var shouldDecodeNewlines = tagName === 'a' && args[1] === 'href'
    ? options.shouldDecodeNewlinesForHref
    : options.shouldDecodeNewlines;
  attrs[i] = {
    name: args[1],
    value: decodeAttr(value, shouldDecodeNewlines)
  };
}

if (!unary) {
  stack.push({ tag: tagName, lowerCasedTag: tagName.toLowerCase(), attrs: attrs });
  lastTag = tagName;
}

if (options.start) {
  options.start(tagName, attrs, unary, match.start, match.end);
}

}

function parseEndTag (tagName, start, end) { var pos, lowerCasedTagName; if (start == null) { start = index; } if (end == null) { end = index; }

if (tagName) {
  lowerCasedTagName = tagName.toLowerCase();
}

// Find the closest opened tag of the same type
if (tagName) {
  for (pos = stack.length - 1; pos >= 0; pos--) {
    if (stack[pos].lowerCasedTag === lowerCasedTagName) {
      break
    }
  }
} else {
  // If no tag name is provided, clean shop
  pos = 0;
}

if (pos >= 0) {
  // Close all the open elements, up the stack
  for (var i = stack.length - 1; i >= pos; i--) {
    if ("development" !== 'production' &&
      (i > pos || !tagName) &&
      options.warn
    ) {
      options.warn(
        ("tag <" + (stack[i].tag) + "> has no matching end tag.")
      );
    }
    if (options.end) {
      options.end(stack[i].tag, start, end);
    }
  }

  // Remove the open elements from the stack
  stack.length = pos;
  lastTag = pos && stack[pos - 1].tag;
} else if (lowerCasedTagName === 'br') {
  if (options.start) {
    options.start(tagName, [], true, start, end);
  }
} else if (lowerCasedTagName === 'p') {
  if (options.start) {
    options.start(tagName, [], false, start, end);
  }
  if (options.end) {
    options.end(tagName, start, end);
  }
}

} }

/* */

var onRE = /^@|^v-on:/; var dirRE = /^v-|^@|^:/; var forAliasRE = /([^]?)\s+(?:in|of)\s+([^])/; var forIteratorRE = /,([^,\}\]])(?:,([^,\}\]]))?$/; var stripParensRE = /^(|)$/g;

var argRE = /:(.*)$/; var bindRE = /^:|^v-bind:/; var modifierRE = /.[^.]+/g;

var decodeHTMLCached = cached(he.decode);

// configurable state var warn$2; var delimiters; var transforms; var preTransforms; var postTransforms; var platformIsPreTag; var platformMustUseProp; var platformGetTagNamespace;

function createASTElement ( tag, attrs, parent ) { return { type: 1, tag: tag, attrsList: attrs, attrsMap: makeAttrsMap(attrs), parent: parent, children: [] } }

/**

Convert HTML string to AST. */ function parse ( template, options ) { warn$2 = options.warn || baseWarn;

platformIsPreTag = options.isPreTag || no; platformMustUseProp = options.mustUseProp || no; platformGetTagNamespace = options.getTagNamespace || no;

transforms = pluckModuleFunction(options.modules, 'transformNode'); preTransforms = pluckModuleFunction(options.modules, 'preTransformNode'); postTransforms = pluckModuleFunction(options.modules, 'postTransformNode');

delimiters = options.delimiters;

var stack = []; var preserveWhitespace = options.preserveWhitespace !== false; var root; var currentParent; var inVPre = false; var inPre = false; var warned = false;

function warnOnce (msg) { if (!warned) { warned = true; warn$2(msg); } }

parseHTML(template, { warn: warn$2, expectHTML: options.expectHTML, isUnaryTag: options.isUnaryTag, canBeLeftOpenTag: options.canBeLeftOpenTag, shouldDecodeNewlines: options.shouldDecodeNewlines, shouldDecodeNewlinesForHref: options.shouldDecodeNewlinesForHref, shouldKeepComment: options.comments, start: function start (tag, attrs, unary) { // check namespace. // inherit parent ns if there is one var ns = (currentParent && currentParent.ns) || platformGetTagNamespace(tag);

  // handle IE svg bug
  /* istanbul ignore if */
  if (isIE && ns === 'svg') {
    attrs = guardIESVGBug(attrs);
  }

  var element = createASTElement(tag, attrs, currentParent);
  if (ns) {
    element.ns = ns;
  }

  if (isForbiddenTag(element) && !isServerRendering()) {
    element.forbidden = true;
    "development" !== 'production' && warn$2(
      'Templates should only be responsible for mapping the state to the ' +
      'UI. Avoid placing tags with side-effects in your templates, such as ' +
      "<" + tag + ">" + ', as they will not be parsed.'
    );
  }

  // apply pre-transforms
  for (var i = 0; i < preTransforms.length; i++) {
    element = preTransforms[i](element, options) || element;
  }

  if (!inVPre) {
    processPre(element);
    if (element.pre) {
      inVPre = true;
    }
  }
  if (platformIsPreTag(element.tag)) {
    inPre = true;
  }
  if (inVPre) {
    processRawAttrs(element);
  } else if (!element.processed) {
    // structural directives
    processFor(element);
    processIf(element);
    processOnce(element);
    // element-scope stuff
    processElement(element, options);
  }

  function checkRootConstraints (el) {
    {
      if (el.tag === 'slot' || el.tag === 'template') {
        warnOnce(
          "Cannot use <" + (el.tag) + "> as component root element because it may " +
          'contain multiple nodes.'
        );
      }
      if (el.attrsMap.hasOwnProperty('v-for')) {
        warnOnce(
          'Cannot use v-for on stateful component root element because ' +
          'it renders multiple elements.'
        );
      }
    }
  }

  // tree management
  if (!root) {
    root = element;
    checkRootConstraints(root);
  } else if (!stack.length) {
    // allow root elements with v-if, v-else-if and v-else
    if (root.if && (element.elseif || element.else)) {
      checkRootConstraints(element);
      addIfCondition(root, {
        exp: element.elseif,
        block: element
      });
    } else {
      warnOnce(
        "Component template should contain exactly one root element. " +
        "If you are using v-if on multiple elements, " +
        "use v-else-if to chain them instead."
      );
    }
  }
  if (currentParent && !element.forbidden) {
    if (element.elseif || element.else) {
      processIfConditions(element, currentParent);
    } else if (element.slotScope) { // scoped slot
      currentParent.plain = false;
      var name = element.slotTarget || '"default"';(currentParent.scopedSlots || (currentParent.scopedSlots = {}))[name] = element;
    } else {
      currentParent.children.push(element);
      element.parent = currentParent;
    }
  }
  if (!unary) {
    currentParent = element;
    stack.push(element);
  } else {
    closeElement(element);
  }
},

end: function end () {
  // remove trailing whitespace
  var element = stack[stack.length - 1];
  var lastNode = element.children[element.children.length - 1];
  if (lastNode && lastNode.type === 3 && lastNode.text === ' ' && !inPre) {
    element.children.pop();
  }
  // pop stack
  stack.length -= 1;
  currentParent = stack[stack.length - 1];
  closeElement(element);
},

chars: function chars (text) {
  if (!currentParent) {
    {
      if (text === template) {
        warnOnce(
          'Component template requires a root element, rather than just text.'
        );
      } else if ((text = text.trim())) {
        warnOnce(
          ("text \"" + text + "\" outside root element will be ignored.")
        );
      }
    }
    return
  }
  // IE textarea placeholder bug
  /* istanbul ignore if */
  if (isIE &&
    currentParent.tag === 'textarea' &&
    currentParent.attrsMap.placeholder === text
  ) {
    return
  }
  var children = currentParent.children;
  text = inPre || text.trim()
    ? isTextTag(currentParent) ? text : decodeHTMLCached(text)
    // only preserve whitespace if its not right after a starting tag
    : preserveWhitespace && children.length ? ' ' : '';
  if (text) {
    var res;
    if (!inVPre && text !== ' ' && (res = parseText(text, delimiters))) {
      children.push({
        type: 2,
        expression: res.expression,
        tokens: res.tokens,
        text: text
      });
    } else if (text !== ' ' || !children.length || children[children.length - 1].text !== ' ') {
      children.push({
        type: 3,
        text: text
      });
    }
  }
},
comment: function comment (text) {
  currentParent.children.push({
    type: 3,
    text: text,
    isComment: true
  });
}

}); return root }

function processPre (el) { if (getAndRemoveAttr(el, 'v-pre') != null) { el.pre = true; } }

function processElement (element, options) { processKey(element);

// determine whether this is a plain element after // removing structural attributes element.plain = !element.key && !element.attrsList.length;

processRef(element); processSlot(element); processComponent(element); for (var i = 0; i < transforms.length; i++) { element = transforms[i](element, options) || element; } processAttrs(element); }

function processRef (el) { var ref = getBindingAttr(el, 'ref'); if (ref) { el.ref = ref; el.refInFor = checkInFor(el); } }

function processFor (el) { var exp; if ((exp = getAndRemoveAttr(el, 'v-for'))) { var res = parseFor(exp); if (res) { extend(el, res); } else { warn$2( ("Invalid v-for expression: " + exp) ); } } }

function addIfCondition (el, condition) { if (!el.ifConditions) { el.ifConditions = []; } el.ifConditions.push(condition); }

function processOnce (el) { var once$$1 = getAndRemoveAttr(el, 'v-once'); if (once$$1 != null) { el.once = true; } }

function processComponent (el) { var binding; if ((binding = getBindingAttr(el, 'is'))) { el.component = binding; } if (getAndRemoveAttr(el, 'inline-template') != null) { el.inlineTemplate = true; } }

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