Nuxt/lib/nuxt.js

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2016-11-07 01:34:58 +00:00
'use strict'
const debug = require('debug')('nuxt:render')
const _ = require('lodash')
const co = require('co')
const fs = require('fs')
const pify = require('pify')
const ansiHTML = require('ansi-html')
const serialize = require('serialize-javascript')
const build = require('./build')
const serveStatic = require('serve-static')
const { resolve, join } = require('path')
const { encodeHtml, getContext, setAnsiColors } = require('./utils')
setAnsiColors(ansiHTML)
class Nuxt {
constructor (options = {}, cb) {
var defaults = {
filenames: {
css: 'style.css',
vendor: 'vendor.bundle.js',
app: 'nuxt.bundle.js'
},
routes: [],
vendor: [],
css: [],
store: false,
cache: false,
loading: {
color: 'black',
failedColor: 'red',
height: '2px',
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duration: 5000
}
}
if (options.loading === true) delete options.loading
this.options = _.defaultsDeep(options, defaults)
// Env variables
this.isProd = process.env.NODE_ENV === 'production'
this.isDev = !process.env.NODE_ENV || process.env.NODE_ENV === 'development'
this.dir = (typeof options.rootDir === 'string' && options.rootDir ? options.rootDir : process.cwd())
// Template
this.appTemplate = _.template(fs.readFileSync(resolve(__dirname, 'views', 'app.html'), 'utf8'), {
imports: { serialize }
})
this.errorTemplate = _.template(fs.readFileSync(resolve(__dirname, 'views', 'error.html'), 'utf8'), {
imports: { ansiHTML, encodeHtml }
})
// renderer used by Vue.js (via createBundleRenderer)
this.renderer = null
// For serving .nuxt/dist/ files
this.serveStatic = pify(serveStatic(resolve(this.dir, '.nuxt', 'dist')))
// Add this.build
this.build = build.bind(this)
// Launch build and set this.renderer
return co(this.build)
.then((nuxt) => {
if (typeof cb === 'function') cb(null, nuxt)
return nuxt
})
.catch((err) => {
if (typeof cb === 'function') cb(err)
return err
})
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}
render (req, res) {
if (!this.renderer) {
setTimeout(() => {
this.render(req, res)
}, 1000)
return
}
const self = this
const context = getContext(req, res)
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co(function * () {
if (self.isDev) {
// Call webpack middlewares only in development
yield self.webpackDevMiddleware(req, res)
yield self.webpackHotMiddleware(req, res)
return
}
if (req.url.includes('/_nuxt/')) {
const url = req.url
req.url = req.url.replace('/_nuxt/', '/')
yield self.serveStatic(req, res)
req.url = url
}
})
.then(() => {
if (this.isDev && req.url.includes('/_nuxt/') && req.url.includes('.hot-update.json')) {
res.statusCode = 404
return res.end()
}
return this.renderRoute(req.url, context)
})
.then((html) => {
if (context.nuxt.error && context.nuxt.error.statusCode) {
res.statusCode = context.nuxt.error.statusCode
}
res.end(html, 'utf8')
})
.catch((err) => {
res.statusCode = 500
res.end(this.errorTemplate({ err }), 'utf8')
})
}
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 * () {
const html = yield self.renderToString(context)
if (context.nuxt && context.nuxt.error instanceof Error) {
context.nuxt.error = { statusCode: 500, message: context.nuxt.error.message }
}
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const app = self.appTemplate({
isProd: self.isProd, // Use to add the extracted CSS <link> in production
APP: html,
context: context,
files: {
css: join('/_nuxt/', self.options.filenames.css),
vendor: join('/_nuxt/', self.options.filenames.vendor),
app: join('/_nuxt/', self.options.filenames.app)
}
})
return app
})
}
stop (callback) {
let promises = []
if (this.webpackDevMiddleware) {
const p = new Promise((resolve, reject) => {
this.webpackDevMiddleware.close(() => resolve())
})
promises.push(p)
}
if (this.webpackServerWatcher) {
const p = new Promise((resolve, reject) => {
this.webpackServerWatcher.close(() => resolve())
})
promises.push(p)
}
return co(function * () {
yield promises
})
.then(function () {
if (typeof callback === 'function') callback()
})
}
}
module.exports = Nuxt