var Vue // late bind
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var version
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var map = Object.create(null)
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if (typeof window !== 'undefined') {
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window.__VUE_HOT_MAP__ = map
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}
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var installed = false
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var isBrowserify = false
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var initHookName = 'beforeCreate'
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exports.install = function (vue, browserify) {
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if (installed) { return }
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installed = true
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Vue = vue.__esModule ? vue.default : vue
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version = Vue.version.split('.').map(Number)
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isBrowserify = browserify
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// compat with < 2.0.0-alpha.7
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if (Vue.config._lifecycleHooks.indexOf('init') > -1) {
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initHookName = 'init'
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}
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exports.compatible = version[0] >= 2
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if (!exports.compatible) {
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console.warn(
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'[HMR] You are using a version of vue-hot-reload-api that is ' +
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'only compatible with Vue.js core ^2.0.0.'
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)
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return
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}
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}
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/**
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* Create a record for a hot module, which keeps track of its constructor
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* and instances
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*
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* @param {String} id
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* @param {Object} options
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*/
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exports.createRecord = function (id, options) {
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if(map[id]) { return }
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var Ctor = null
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if (typeof options === 'function') {
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Ctor = options
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options = Ctor.options
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}
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makeOptionsHot(id, options)
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map[id] = {
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Ctor: Ctor,
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options: options,
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instances: []
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}
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}
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/**
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* Check if module is recorded
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*
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* @param {String} id
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*/
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exports.isRecorded = function (id) {
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return typeof map[id] !== 'undefined'
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}
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/**
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* Make a Component options object hot.
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*
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* @param {String} id
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* @param {Object} options
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*/
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function makeOptionsHot(id, options) {
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if (options.functional) {
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var render = options.render
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options.render = function (h, ctx) {
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var instances = map[id].instances
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if (ctx && instances.indexOf(ctx.parent) < 0) {
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instances.push(ctx.parent)
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}
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return render(h, ctx)
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}
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} else {
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injectHook(options, initHookName, function() {
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var record = map[id]
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if (!record.Ctor) {
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record.Ctor = this.constructor
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}
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record.instances.push(this)
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})
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injectHook(options, 'beforeDestroy', function() {
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var instances = map[id].instances
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instances.splice(instances.indexOf(this), 1)
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})
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}
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}
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/**
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* Inject a hook to a hot reloadable component so that
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* we can keep track of it.
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*
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* @param {Object} options
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* @param {String} name
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* @param {Function} hook
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*/
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function injectHook(options, name, hook) {
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var existing = options[name]
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options[name] = existing
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? Array.isArray(existing) ? existing.concat(hook) : [existing, hook]
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: [hook]
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}
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function tryWrap(fn) {
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return function (id, arg) {
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try {
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fn(id, arg)
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} catch (e) {
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console.error(e)
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console.warn(
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'Something went wrong during Vue component hot-reload. Full reload required.'
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)
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}
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}
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}
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function updateOptions (oldOptions, newOptions) {
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for (var key in oldOptions) {
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if (!(key in newOptions)) {
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delete oldOptions[key]
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}
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}
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for (var key$1 in newOptions) {
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oldOptions[key$1] = newOptions[key$1]
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}
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}
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exports.rerender = tryWrap(function (id, options) {
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var record = map[id]
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if (!options) {
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record.instances.slice().forEach(function (instance) {
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instance.$forceUpdate()
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})
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return
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}
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if (typeof options === 'function') {
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options = options.options
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}
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if (record.Ctor) {
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record.Ctor.options.render = options.render
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record.Ctor.options.staticRenderFns = options.staticRenderFns
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record.instances.slice().forEach(function (instance) {
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instance.$options.render = options.render
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instance.$options.staticRenderFns = options.staticRenderFns
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// reset static trees
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// pre 2.5, all static trees are cached together on the instance
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if (instance._staticTrees) {
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instance._staticTrees = []
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}
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// 2.5.0
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if (Array.isArray(record.Ctor.options.cached)) {
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record.Ctor.options.cached = []
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}
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// 2.5.3
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if (Array.isArray(instance.$options.cached)) {
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instance.$options.cached = []
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}
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// post 2.5.4: v-once trees are cached on instance._staticTrees.
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// Pure static trees are cached on the staticRenderFns array
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// (both already reset above)
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// 2.6: temporarily mark rendered scoped slots as unstable so that
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// child components can be forced to update
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var restore = patchScopedSlots(instance)
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instance.$forceUpdate()
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instance.$nextTick(restore)
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})
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} else {
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// functional or no instance created yet
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record.options.render = options.render
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record.options.staticRenderFns = options.staticRenderFns
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// handle functional component re-render
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if (record.options.functional) {
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// rerender with full options
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if (Object.keys(options).length > 2) {
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updateOptions(record.options, options)
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} else {
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// template-only rerender.
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// need to inject the style injection code for CSS modules
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// to work properly.
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var injectStyles = record.options._injectStyles
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if (injectStyles) {
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var render = options.render
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record.options.render = function (h, ctx) {
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injectStyles.call(ctx)
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return render(h, ctx)
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}
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}
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}
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record.options._Ctor = null
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// 2.5.3
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if (Array.isArray(record.options.cached)) {
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record.options.cached = []
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}
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record.instances.slice().forEach(function (instance) {
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instance.$forceUpdate()
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})
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}
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}
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})
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exports.reload = tryWrap(function (id, options) {
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var record = map[id]
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if (options) {
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if (typeof options === 'function') {
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options = options.options
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}
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makeOptionsHot(id, options)
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if (record.Ctor) {
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if (version[1] < 2) {
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// preserve pre 2.2 behavior for global mixin handling
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record.Ctor.extendOptions = options
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}
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var newCtor = record.Ctor.super.extend(options)
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// prevent record.options._Ctor from being overwritten accidentally
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newCtor.options._Ctor = record.options._Ctor
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record.Ctor.options = newCtor.options
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record.Ctor.cid = newCtor.cid
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record.Ctor.prototype = newCtor.prototype
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if (newCtor.release) {
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// temporary global mixin strategy used in < 2.0.0-alpha.6
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newCtor.release()
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}
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} else {
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updateOptions(record.options, options)
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}
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}
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record.instances.slice().forEach(function (instance) {
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if (instance.$vnode && instance.$vnode.context) {
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instance.$vnode.context.$forceUpdate()
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} else {
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console.warn(
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'Root or manually mounted instance modified. Full reload required.'
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)
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}
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})
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})
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// 2.6 optimizes template-compiled scoped slots and skips updates if child
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// only uses scoped slots. We need to patch the scoped slots resolving helper
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// to temporarily mark all scoped slots as unstable in order to force child
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// updates.
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function patchScopedSlots (instance) {
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if (!instance._u) { return }
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// https://github.com/vuejs/vue/blob/dev/src/core/instance/render-helpers/resolve-scoped-slots.js
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var original = instance._u
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instance._u = function (slots) {
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try {
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// 2.6.4 ~ 2.6.6
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return original(slots, true)
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} catch (e) {
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// 2.5 / >= 2.6.7
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return original(slots, null, true)
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}
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}
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return function () {
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instance._u = original
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}
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}
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