mirror of https://github.com/nuxt/nuxt.git
422 lines
14 KiB
JavaScript
422 lines
14 KiB
JavaScript
'use strict'
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import Vue from 'vue'
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import middleware from './middleware'
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import { createApp, NuxtError } from './index'
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import { applyAsyncData, getMatchedComponents, getMatchedComponentsInstances, flatMapComponents, getContext, promiseSeries, promisify, getLocation, compile } from './utils'
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const noopData = () => { return {} }
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const noopFetch = () => {}
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let _lastPaths = []
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let _lastComponentsFiles = []
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const { app, router<%= (store ? ', store' : '') %> } = createApp()
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function mapTransitions(Components, to, from) {
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return Components.map((Component) => {
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let transition = Component.options.transition
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if (typeof transition === 'function') {
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return transition(to, from)
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}
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return transition
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})
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}
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function loadAsyncComponents (to, from, next) {
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const resolveComponents = flatMapComponents(to, (Component, _, match, key) => {
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if (typeof Component === 'function' && !Component.options) {
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return new Promise(function (resolve, reject) {
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const _resolve = (Component) => {
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if (!Component.options) {
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Component = Vue.extend(Component) // fix issue #6
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Component._Ctor = Component
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} else {
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Component._Ctor = Component
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Component.extendOptions = Component.options
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}
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match.components[key] = Component
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resolve(Component)
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}
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Component().then(_resolve).catch(reject)
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})
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}
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return Component
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})
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const fromPath = from.fullPath.split('#')[0]
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const toPath = to.fullPath.split('#')[0]
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this._hashChanged = (fromPath === toPath)
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if (!this._hashChanged) {
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<%= (loading ? 'this.$loading.start && this.$loading.start()' : '') %>
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}
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Promise.all(resolveComponents)
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.then(() => next())
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.catch((err) => {
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let statusCode = err.statusCode || err.status || (err.response && err.response.status) || 500
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this.error({ statusCode, message: err.message })
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next(false)
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})
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}
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function callMiddleware (Components, context, layout) {
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// if layout is undefined, only call global middleware
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let midd = <%= serialize(router.middleware, { isJSON: true }) %>
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let unknownMiddleware = false
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if (typeof layout !== 'undefined') {
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midd = [] // exclude global middleware if layout defined (already called before)
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if (layout.middleware) {
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midd = midd.concat(layout.middleware)
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}
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Components.forEach((Component) => {
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if (Component.options.middleware) {
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midd = midd.concat(Component.options.middleware)
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}
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})
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}
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midd = midd.map((name) => {
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if (typeof middleware[name] !== 'function') {
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unknownMiddleware = true
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this.error({ statusCode: 500, message: 'Unknown middleware ' + name })
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}
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return middleware[name]
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})
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if (unknownMiddleware) return
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return promiseSeries(midd, context)
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}
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function render (to, from, next) {
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if (this._hashChanged) return next()
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const _next = function (path) {
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<%= (loading ? 'this.$loading.finish && this.$loading.finish()' : '') %>
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nextCalled = true
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next(path)
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}
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let context = getContext({ to<%= (store ? ', store' : '') %>, isClient: true, next: _next.bind(this), error: this.error.bind(this) })
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let Components = getMatchedComponents(to)
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this._context = context
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this._dateLastError = this.$options._nuxt.dateErr
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this._hadError = !!this.$options._nuxt.err
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if (!Components.length) {
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// Default layout
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callMiddleware.call(this, Components, context)
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.then(() => this.loadLayout(typeof NuxtError.layout === 'function' ? NuxtError.layout(context) : NuxtError.layout))
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.then(callMiddleware.bind(this, Components, context))
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.then(() => {
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this.error({ statusCode: 404, message: 'This page could not be found.' })
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return next()
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})
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return
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}
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// Update ._data and other properties if hot reloaded
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Components.forEach(function (Component) {
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if (Component._Ctor && Component._Ctor.options) {
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Component.options.asyncData = Component._Ctor.options.asyncData
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Component.options.fetch = Component._Ctor.options.fetch
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}
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})
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this.setTransitions(mapTransitions(Components, to, from))
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let nextCalled = false
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// Set layout
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callMiddleware.call(this, Components, context)
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.then(() => {
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let layout = Components[0].options.layout
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if (typeof layout === 'function') {
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layout = layout(context)
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}
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return this.loadLayout(layout)
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})
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.then(callMiddleware.bind(this, Components, context))
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.then(() => {
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// Pass validation?
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let isValid = true
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Components.forEach((Component) => {
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if (!isValid) return
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if (typeof Component.options.validate !== 'function') return
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isValid = Component.options.validate({
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params: to.params || {},
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query : to.query || {}<%= (store ? ', store: context.store' : '') %>
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})
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})
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if (!isValid) {
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this.error({ statusCode: 404, message: 'This page could not be found.' })
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return next()
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}
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return Promise.all(Components.map((Component, i) => {
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// Check if only children route changed
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Component._path = compile(to.matched[i].path)(to.params)
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if (!this._hadError && Component._path === _lastPaths[i] && (i + 1) !== Components.length) {
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return Promise.resolve()
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}
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let promises = []
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// asyncData method
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if (Component.options.asyncData && typeof Component.options.asyncData === 'function') {
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var promise = promisify(Component.options.asyncData, context)
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promise.then((asyncDataResult) => {
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applyAsyncData(Component, asyncDataResult)
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<%= (loading ? 'this.$loading.increase && this.$loading.increase(30)' : '') %>
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})
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promises.push(promise)
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}
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if (Component.options.fetch) {
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var p = Component.options.fetch(context)
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if (!p || (!(p instanceof Promise) && (typeof p.then !== 'function'))) { p = Promise.resolve(p) }
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<%= (loading ? 'p.then(() => this.$loading.increase && this.$loading.increase(30))' : '') %>
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promises.push(p)
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}
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return Promise.all(promises)
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}))
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})
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.then(() => {
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_lastPaths = Components.map((Component, i) => compile(to.matched[i].path)(to.params))
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<%= (loading ? 'this.$loading.finish && this.$loading.finish()' : '') %>
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// If not redirected
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if (!nextCalled) {
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next()
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}
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})
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.catch((error) => {
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_lastPaths = []
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error.statusCode = error.statusCode || error.status || (error.response && error.response.status) || 500
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let layout = NuxtError.layout
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if (typeof layout === 'function') {
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layout = layout(context)
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}
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this.loadLayout(layout)
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.then(() => {
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this.error(error)
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next(false)
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})
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})
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}
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// Fix components format in matched, it's due to code-splitting of vue-router
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function normalizeComponents (to, ___) {
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flatMapComponents(to, (Component, _, match, key) => {
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if (typeof Component === 'object' && !Component.options) {
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// Updated via vue-router resolveAsyncComponents()
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Component = Vue.extend(Component)
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Component._Ctor = Component
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match.components[key] = Component
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}
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return Component
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})
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}
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// When navigating on a different route but the same component is used, Vue.js
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// will not update the instance data, so we have to update $data ourselves
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function fixPrepatch (to, ___) {
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if (this._hashChanged) return
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Vue.nextTick(() => {
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let instances = getMatchedComponentsInstances(to)
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_lastComponentsFiles = instances.map((instance, i) => {
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if (!instance) return '';
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if (_lastPaths[i] === instance.constructor._path && typeof instance.constructor.options.data === 'function') {
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let newData = instance.constructor.options.data.call(instance)
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for (let key in newData) {
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Vue.set(instance.$data, key, newData[key])
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}
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}
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return instance.constructor.options.__file
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})
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// hide error component if no error
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if (this._hadError && this._dateLastError === this.$options._nuxt.dateErr) {
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this.error()
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}
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// Set layout
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let layout = this.$options._nuxt.err ? NuxtError.layout : to.matched[0].components.default.options.layout
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if (typeof layout === 'function') {
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layout = layout(this._context)
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}
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this.setLayout(layout)
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// hot reloading
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setTimeout(() => hotReloadAPI(this), 100)
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})
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}
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// Special hot reload with asyncData(context)
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function hotReloadAPI (_app) {
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if (!module.hot) return
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let $components = []
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let $nuxt = _app.$nuxt
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while ($nuxt && $nuxt.$children && $nuxt.$children.length) {
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$nuxt.$children.forEach(function (child, i) {
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if (child.$vnode.data.nuxtChild) {
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let hasAlready = false
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$components.forEach(function (component) {
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if (component.$options.__file === child.$options.__file) {
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hasAlready = true
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}
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})
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if (!hasAlready) {
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$components.push(child)
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}
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}
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$nuxt = child
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})
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}
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$components.forEach(addHotReload.bind(_app))
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}
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function addHotReload ($component, depth) {
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if ($component.$vnode.data._hasHotReload) return
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$component.$vnode.data._hasHotReload = true
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var _forceUpdate = $component.$forceUpdate.bind($component.$parent)
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$component.$vnode.context.$forceUpdate = () => {
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let Components = getMatchedComponents(router.currentRoute)
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let Component = Components[depth]
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if (!Component) return _forceUpdate()
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if (typeof Component === 'object' && !Component.options) {
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// Updated via vue-router resolveAsyncComponents()
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Component = Vue.extend(Component)
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Component._Ctor = Component
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}
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this.error()
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let promises = []
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const next = function (path) {
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<%= (loading ? 'this.$loading.finish && this.$loading.finish()' : '') %>
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router.push(path)
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}
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let context = getContext({ route: router.currentRoute<%= (store ? ', store' : '') %>, isClient: true, next: next.bind(this), error: this.error })
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<%= (loading ? 'this.$loading.start && this.$loading.start()' : '') %>
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callMiddleware.call(this, Components, context)
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.then(() => {
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// If layout changed
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if (depth !== 0) return Promise.resolve()
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let layout = Component.options.layout || 'default'
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if (typeof layout === 'function') {
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layout = layout(context)
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}
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if (this.layoutName === layout) return Promise.resolve()
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let promise = this.loadLayout(layout)
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promise.then(() => {
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this.setLayout(layout)
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Vue.nextTick(() => hotReloadAPI(this))
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})
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return promise
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})
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.then(() => {
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return callMiddleware.call(this, Components, context, this.layout)
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})
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.then(() => {
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// Call asyncData(context)
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let pAsyncData = promisify(Component.options.asyncData || noopData, context)
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pAsyncData.then((asyncDataResult) => {
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applyAsyncData(Component, asyncDataResult)
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<%= (loading ? 'this.$loading.increase && this.$loading.increase(30)' : '') %>
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})
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promises.push(pAsyncData)
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// Call fetch()
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Component.options.fetch = Component.options.fetch || noopFetch
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let pFetch = Component.options.fetch(context)
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if (!pFetch || (!(pFetch instanceof Promise) && (typeof pFetch.then !== 'function'))) { pFetch = Promise.resolve(pFetch) }
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<%= (loading ? 'pFetch.then(() => this.$loading.increase && this.$loading.increase(30))' : '') %>
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promises.push(pFetch)
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return Promise.all(promises)
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})
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.then(() => {
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<%= (loading ? 'this.$loading.finish && this.$loading.finish()' : '') %>
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_forceUpdate()
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setTimeout(() => hotReloadAPI(this), 100)
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})
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}
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}
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// Load vue app
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const NUXT = window.__NUXT__ || {}
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if (!NUXT) {
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throw new Error('[nuxt.js] cannot find the global variable __NUXT__, make sure the server is working.')
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}
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// Get matched components
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const path = getLocation(router.options.base)
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const resolveComponents = flatMapComponents(router.match(path), (Component, _, match, key, index) => {
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if (typeof Component === 'function' && !Component.options) {
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return new Promise(function (resolve, reject) {
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const _resolve = (Component) => {
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if (!Component.options) {
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Component = Vue.extend(Component) // fix issue #6
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Component._Ctor = Component
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} else {
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Component._Ctor = Component
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Component.extendOptions = Component.options
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}
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if (NUXT.serverRendered) {
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applyAsyncData(Component, NUXT.data[index])
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}
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match.components[key] = Component
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resolve(Component)
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}
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Component().then(_resolve).catch(reject)
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})
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}
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return Component
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})
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function nuxtReady (app) {
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window._nuxtReadyCbs.forEach((cb) => {
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if (typeof cb === 'function') {
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cb(app)
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}
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})
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// Add router hooks
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router.afterEach(function (to, from) {
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app.$nuxt.$emit('routeChanged', to, from)
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})
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}
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Promise.all(resolveComponents)
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.then((Components) => {
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const _app = new Vue(app)
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let layout = NUXT.layout || 'default'
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return _app.loadLayout(layout)
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.then(() => {
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_app.setLayout(layout)
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return { _app, Components }
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})
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})
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.then(({ _app, Components }) => {
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const mountApp = () => {
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_app.$mount('#__nuxt')
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Vue.nextTick(() => {
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// Hot reloading
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hotReloadAPI(_app)
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// Call window.onNuxtReady callbacks
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nuxtReady(_app)
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})
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}
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_app.setTransitions = _app.$options._nuxt.setTransitions.bind(_app)
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if (Components.length) {
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_app.setTransitions(mapTransitions(Components, router.currentRoute))
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_lastPaths = router.currentRoute.matched.map((route) => compile(route.path)(router.currentRoute.params))
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_lastComponentsFiles = Components.map((Component) => Component.options.__file)
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}
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_app.error = _app.$options._nuxt.error.bind(_app)
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_app.$loading = {} // to avoid error while _app.$nuxt does not exist
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if (NUXT.error) _app.error(NUXT.error)
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// Add router hooks
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router.beforeEach(loadAsyncComponents.bind(_app))
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router.beforeEach(render.bind(_app))
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router.afterEach(normalizeComponents)
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router.afterEach(fixPrepatch.bind(_app))
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if (NUXT.serverRendered) {
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mountApp()
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return
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}
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render.call(_app, router.currentRoute, router.currentRoute, function (path) {
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if (path) {
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let mounted = false
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router.afterEach(function () {
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if (mounted) return
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mounted = true
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mountApp()
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})
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router.push(path)
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return
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}
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normalizeComponents(router.currentRoute, router.currentRoute)
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fixPrepatch.call(_app, router.currentRoute, router.currentRoute)
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mountApp()
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})
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})
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.catch((err) => {
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console.error('[nuxt.js] Cannot load components', err) // eslint-disable-line no-console
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})
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