'use strict' import ansiHTML from 'ansi-html' import co from 'co' import serialize from 'serialize-javascript' import { getContext, setAnsiColors, encodeHtml } from './utils' const debug = require('debug')('nuxt:render') // force blue color debug.color = 4 setAnsiColors(ansiHTML) export function render (req, res) { if (!this.renderer && !this.dev) { console.error('> No build files found, please run `nuxt build` before launching `nuxt start`') // eslint-disable-line no-console process.exit(1) } /* istanbul ignore if */ if (!this.renderer || !this.appTemplate) { return new Promise((resolve) => { setTimeout(() => { resolve(this.render(req, res)) }, 1000) }) } const self = this const context = getContext(req, res) return co(function * () { res.statusCode = 200 if (self.dev) { // Call webpack middleware only in development yield self.webpackDevMiddleware(req, res) yield self.webpackHotMiddleware(req, res) } if (!self.dev && self.options.performance.gzip === true) { yield self.gzipMiddleware(req, res) } // If base in req.url, remove it for the middleware and vue-router if (self.options.router.base !== '/' && req.url.indexOf(self.options.router.base) === 0) { // Compatibility with base url for dev server req.url = req.url.replace(self.options.router.base, '/') } // Serve static/ files yield self.serveStatic(req, res) // Serve .nuxt/dist/ files (only for production) if (!self.dev && req.url.indexOf(self.options.build.publicPath) === 0) { const url = req.url req.url = req.url.replace(self.options.build.publicPath, '/') yield self.serveStaticNuxt(req, res) /* istanbul ignore next */ req.url = url } }) .then(() => { /* istanbul ignore if */ if (this.dev && req.url.indexOf(self.options.build.publicPath) === 0 && req.url.includes('.hot-update.json')) { res.statusCode = 404 return { html: '' } } return this.renderRoute(req.url, context) }) .then(({ html, error, redirected }) => { if (redirected) { return html } if (error) { res.statusCode = context.nuxt.error.statusCode || 500 } res.setHeader('Content-Type', 'text/html; charset=utf-8') res.setHeader('Content-Length', Buffer.byteLength(html)) res.end(html, 'utf8') return html }) .catch((err) => { const html = this.errorTemplate({ error: err, stack: ansiHTML(encodeHtml(err.stack)) }) res.statusCode = 500 res.setHeader('Content-Type', 'text/html; charset=utf-8') res.setHeader('Content-Length', Buffer.byteLength(html)) res.end(html, 'utf8') return err }) } export function renderRoute (url, context = {}) { debug(`Rendering url ${url}`) // Add url and isSever to the context context.url = url context.isServer = true // Call rendertoSting from the bundleRenderer and generate the HTML (will update the context as well) const self = this return co(function * () { let APP = yield self.renderToString(context) if (!context.nuxt.serverRendered) { APP = '
' } const m = context.meta.inject() let HEAD = m.meta.text() + m.title.text() + m.link.text() + m.style.text() + m.script.text() + m.noscript.text() if (self.options.router.base !== '/') { HEAD += `` } HEAD += context.styles APP += `` const html = self.appTemplate({ HTML_ATTRS: 'data-n-head-ssr ' + m.htmlAttrs.text(), BODY_ATTRS: m.bodyAttrs.text(), HEAD, APP }) return { html, error: context.nuxt.error, redirected: context.redirected } }) } // Function used to do dom checking via jsdom let jsdom = null export function renderAndGetWindow (url, opts = {}) { /* istanbul ignore if */ if (!jsdom) { try { jsdom = require('jsdom') } catch (e) { console.error('Fail when calling nuxt.renderAndGetWindow(url)') // eslint-disable-line no-console console.error('jsdom module is not installed') // eslint-disable-line no-console console.error('Please install jsdom with: npm install --save-dev jsdom') // eslint-disable-line no-console process.exit(1) } } let virtualConsole = jsdom.createVirtualConsole().sendTo(console) if (opts.virtualConsole === false) { virtualConsole = undefined } url = url || 'http://localhost:3000' return new Promise((resolve, reject) => { jsdom.env({ url: url, features: { FetchExternalResources: ['script', 'link'], ProcessExternalResources: ['script'] }, virtualConsole, done (err, window) { if (err) return reject(err) // Mock window.scrollTo window.scrollTo = function () {} // If Nuxt could not be loaded (error from the server-side) if (!window.__NUXT__) { let error = new Error('Could not load the nuxt app') error.body = window.document.getElementsByTagName('body')[0].innerHTML return reject(error) } // Used by nuxt.js to say when the components are loaded and the app ready window.onNuxtReady(() => { resolve(window) }) } }) }) }