mirror of
https://github.com/nuxt/nuxt.git
synced 2024-11-06 06:03:58 +00:00
562 lines
17 KiB
JavaScript
562 lines
17 KiB
JavaScript
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 {
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applyAsyncData,
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sanitizeComponent,
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resolveRouteComponents,
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getMatchedComponents,
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getChangedComponentsInstances,
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flatMapComponents,
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setContext,
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middlewareSeries,
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promisify,
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getLocation,
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compile
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} from './utils'
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const noopData = () => { return {} }
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const noopFetch = () => {}
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// Global shared references
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let _lastPaths = []
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let _lastComponentsFiles = []
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let app
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let router
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<% if (store) { %>let store<% } %>
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// Try to rehydrate SSR data from window
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const NUXT = window.__NUXT__ || {}
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<% if (debug || mode === 'spa') { %>
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// Setup global Vue error handler
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const defaultErrorHandler = Vue.config.errorHandler
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Vue.config.errorHandler = function (err, vm, info) {
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const nuxtError = {
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statusCode: err.statusCode || err.name || 'Whoops!',
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message: err.message || err.toString()
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}
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// Show Nuxt Error Page
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if(vm && vm.$root && vm.$root.$nuxt && vm.$root.$nuxt.error && info !== 'render function') {
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vm.$root.$nuxt.error(nuxtError)
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}
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// Call other handler if exist
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if (typeof defaultErrorHandler === 'function') {
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return defaultErrorHandler(...arguments)
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}
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// Log to console
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if (process.env.NODE_ENV !== 'production') {
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console.error(err)
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} else {
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console.error(err.message || nuxtError.message)
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}
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}
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<% } %>
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// Create and mount App
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createApp()
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.then(mountApp)
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.catch(err => {
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console.error('[nuxt] Error while initializing app', err)
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})
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function componentOption(component, key, ...args) {
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if (!component || !component.options || !component.options[key]) {
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return {}
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}
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const option = component.options[key]
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if (typeof option === 'function') {
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return option(...args)
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}
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return option
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}
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function mapTransitions(Components, to, from) {
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const componentTransitions = component => {
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const transition = componentOption(component, 'transition', to, from) || {}
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return (typeof transition === 'string' ? { name: transition } : transition)
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}
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return Components.map(Component => {
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// Clone original object to prevent overrides
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const transitions = Object.assign({}, componentTransitions(Component))
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// Combine transitions & prefer `leave` transitions of 'from' route
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if (from && from.matched.length && from.matched[0].components.default) {
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const from_transitions = componentTransitions(from.matched[0].components.default)
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Object.keys(from_transitions)
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.filter(key => from_transitions[key] && key.toLowerCase().indexOf('leave') !== -1)
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.forEach(key => { transitions[key] = from_transitions[key] })
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}
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return transitions
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})
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}
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async function loadAsyncComponents (to, from, next) {
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// Check if route path changed (this._pathChanged), only if the page is not an error (for validate())
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this._pathChanged = !!app.nuxt.err || from.path !== to.path
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<% if (loading) { %>
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if (this._pathChanged && this.$loading.start) {
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this.$loading.start()
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}
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<% } %>
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try {
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await resolveRouteComponents(to)
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next()
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} catch (err) {
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err = err || {}
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const 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 applySSRData(Component, ssrData) {
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if (NUXT.serverRendered && ssrData) {
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applyAsyncData(Component, ssrData)
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}
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Component._Ctor = Component
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return Component
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}
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// Get matched components
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function resolveComponents(router) {
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const path = getLocation(router.options.base, router.options.mode)
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return flatMapComponents(router.match(path), async (Component, _, match, key, index) => {
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// If component is not resolved yet, resolve it
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if (typeof Component === 'function' && !Component.options) {
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Component = await Component()
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}
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// Sanitize it and save it
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const _Component = applySSRData(sanitizeComponent(Component), NUXT.data ? NUXT.data[index] : null)
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match.components[key] = _Component
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return _Component
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})
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}
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function callMiddleware (Components, context, layout) {
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let midd = <%= serialize(router.middleware, { isJSON: true }) %>
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let unknownMiddleware = false
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// If layout is undefined, only call global middleware
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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 name === 'function') return 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 middlewareSeries(midd, context)
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}
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async function render (to, from, next) {
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if (this._pathChanged === false) return next()
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// nextCalled is true when redirected
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let nextCalled = false
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const _next = path => {
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<% if(loading) { %>if(this.$loading.finish) this.$loading.finish()<% } %>
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if (nextCalled) return
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nextCalled = true
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next(path)
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}
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// Update context
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await setContext(app, {
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route: to,
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from,
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next: _next.bind(this)
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})
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this._dateLastError = app.nuxt.dateErr
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this._hadError = !!app.nuxt.err
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// Get route's matched components
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const Components = getMatchedComponents(to)
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// If no Components matched, generate 404
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if (!Components.length) {
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// Default layout
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await callMiddleware.call(this, Components, app.context)
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if (app.context._redirected) return
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// Load layout for error page
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const layout = await this.loadLayout(typeof NuxtError.layout === 'function' ? NuxtError.layout(app.context) : NuxtError.layout)
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await callMiddleware.call(this, Components, app.context, layout)
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if (app.context._redirected) return
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// Show error page
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app.context.error({ statusCode: 404, message: '<%= messages.error_404 %>' })
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return next()
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}
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// Update ._data and other properties if hot reloaded
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Components.forEach(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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// Apply transitions
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this.setTransitions(mapTransitions(Components, to, from))
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try {
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// Call middleware
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await callMiddleware.call(this, Components, app.context)
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if (app.context._redirected) return
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if (app.context._errored) return next()
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// Set layout
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let layout = Components[0].options.layout
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if (typeof layout === 'function') {
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layout = layout(app.context)
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}
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layout = await this.loadLayout(layout)
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// Call middleware for layout
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await callMiddleware.call(this, Components, app.context, layout)
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if (app.context._redirected) return
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if (app.context._errored) return next()
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// Call .validate()
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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 || {},
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<% if(store) { %>store<% } %>
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})
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})
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// ...If .validate() returned false
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if (!isValid) {
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this.error({ statusCode: 404, message: '<%= messages.error_404 %>' })
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return next()
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}
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// Call asyncData & fetch hooks on components matched by the route.
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await 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 && this._isMounted && Component._path === _lastPaths[i]) {
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return Promise.resolve()
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}
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let promises = []
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const hasAsyncData = Component.options.asyncData && typeof Component.options.asyncData === 'function'
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const hasFetch = !!Component.options.fetch
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<% if(loading) { %>const loadingIncrease = (hasAsyncData && hasFetch) ? 30 : 45<% } %>
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// Call asyncData(context)
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if (hasAsyncData) {
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const promise = promisify(Component.options.asyncData, app.context)
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.then(asyncDataResult => {
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applyAsyncData(Component, asyncDataResult)
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<% if(loading) { %>if(this.$loading.increase) this.$loading.increase(loadingIncrease)<% } %>
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})
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promises.push(promise)
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}
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// Call fetch(context)
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if (hasFetch) {
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let p = Component.options.fetch(app.context)
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if (!p || (!(p instanceof Promise) && (typeof p.then !== 'function'))) {
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p = Promise.resolve(p)
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}
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p.then(fetchResult => {
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<% if(loading) { %>if(this.$loading.increase) this.$loading.increase(loadingIncrease)<% } %>
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})
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promises.push(p)
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}
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return Promise.all(promises)
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}))
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_lastPaths = Components.map((Component, i) => compile(to.matched[i].path)(to.params))
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<% if(loading) { %>if(this.$loading.finish) this.$loading.finish()<% } %>
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// If not redirected
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if (!nextCalled) next()
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} catch (error) {
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if (!error) 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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// Load error layout
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let layout = NuxtError.layout
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if (typeof layout === 'function') {
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layout = layout(app.context)
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}
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await this.loadLayout(layout)
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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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// 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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function showNextPage(to) {
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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(app.context)
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}
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this.setLayout(layout)
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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 $data ourselves
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function fixPrepatch (to, from) {
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if (this._pathChanged === false) return
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Vue.nextTick(() => {
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const instances = getChangedComponentsInstances(to, from)
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var dlen = to.matched.length - instances.length
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_lastComponentsFiles = instances.map((instance, i) => {
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if (!instance) return '';
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if (_lastPaths[dlen + i] === instance.constructor._path && typeof instance.constructor.options.data === 'function') {
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const newData = instance.constructor.options.data.call(instance)
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for (let key in newData) {
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Vue.set(instance.$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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showNextPage.call(this, to)
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<% if (isDev) { %>
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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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}
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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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// Special JSDOM
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if (typeof window._onNuxtLoaded === 'function') {
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window._onNuxtLoaded(app)
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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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<% if (isDev) { %>
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// Special hot reload with asyncData(context)
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function getNuxtChildComponents($parent, $components = []) {
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$parent.$children.forEach(($child) => {
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if ($child.$vnode.data.nuxtChild && !$components.find(c =>(c.$options.__file === $child.$options.__file))) {
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$components.push($child)
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}
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if ($child.$children && $child.$children.length) {
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getNuxtChildComponents($child, $components)
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}
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})
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return $components
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}
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function hotReloadAPI (_app) {
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if (!module.hot) return
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let $components = getNuxtChildComponents(_app.$nuxt, [])
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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.$forceUpdate = async () => {
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let Components = getMatchedComponents(router.currentRoute)
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let Component = Components[depth]
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if (!Component) return _forceUpdate()
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if (typeof Component === 'object' && !Component.options) {
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// Updated via vue-router resolveAsyncComponents()
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Component = Vue.extend(Component)
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Component._Ctor = Component
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}
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this.error()
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let promises = []
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const next = function (path) {
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<%= (loading ? 'this.$loading.finish && this.$loading.finish()' : '') %>
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router.push(path)
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}
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await setContext(app, {
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route: router.currentRoute,
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isHMR: true,
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next: next.bind(this)
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})
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const context = app.context
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<%= (loading ? 'this.$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.$loading.finish()' : '') %>
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_forceUpdate()
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setTimeout(() => hotReloadAPI(this), 100)
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})
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}
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}
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<% } %>
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async function mountApp(__app) {
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// Set global variables
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app = __app.app
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router = __app.router
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<% if (store) { %>store = __app.store <% } %>
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// Resolve route components
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const Components = await Promise.all(resolveComponents(router))
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// Create Vue instance
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const _app = new Vue(app)
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<% if (mode !== 'spa') { %>
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// Load layout
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const layout = NUXT.layout || 'default'
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await _app.loadLayout(layout)
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_app.setLayout(layout)
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<% } %>
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// Mounts Vue app to DOM element
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const mountApp = () => {
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_app.$mount('#__nuxt')
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// Listen for first Vue update
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Vue.nextTick(() => {
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// Call window.onNuxtReady callbacks
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nuxtReady(_app)
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<% if (isDev) { %>
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// Enable hot reloading
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hotReloadAPI(_app)
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<% } %>
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})
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}
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// Enable transitions
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_app.setTransitions = _app.$options.nuxt.setTransitions.bind(_app)
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if (Components.length) {
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_app.setTransitions(mapTransitions(Components, router.currentRoute))
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_lastPaths = router.currentRoute.matched.map(route => compile(route.path)(router.currentRoute.params))
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_lastComponentsFiles = Components.map(Component => Component.options.__file)
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}
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// Initialize error handler
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_app.$loading = {} // To avoid error while _app.$nuxt does not exist
|
|
if (NUXT.error) _app.error(NUXT.error)
|
|
|
|
// Add router hooks
|
|
router.beforeEach(loadAsyncComponents.bind(_app))
|
|
router.beforeEach(render.bind(_app))
|
|
router.afterEach(normalizeComponents)
|
|
router.afterEach(fixPrepatch.bind(_app))
|
|
|
|
// If page already is server rendered
|
|
if (NUXT.serverRendered) {
|
|
mountApp()
|
|
return
|
|
}
|
|
|
|
// First render on client-side
|
|
render.call(_app, router.currentRoute, router.currentRoute, (path) => {
|
|
// If not redirected
|
|
if (!path) {
|
|
normalizeComponents(router.currentRoute, router.currentRoute)
|
|
showNextPage.call(_app, router.currentRoute)
|
|
// Dont call fixPrepatch.call(_app, router.currentRoute, router.currentRoute) since it's first render
|
|
mountApp()
|
|
return
|
|
}
|
|
|
|
// Push the path and then mount app
|
|
router.push(path, () => mountApp(), (err) => console.error(err))
|
|
})
|
|
}
|