vue-storefront/core/scripts/server.js

A Vue.js, PWA eCommerce frontend

const fs = require('fs')
const path = require('path')
const express = require('express')
const favicon = require('serve-favicon')
const rootPath = require('app-root-path').path
const resolve = file => path.resolve(rootPath, file)

const isProd = process.env.NODE_ENV === 'production'
process.noDeprecation = true

const app = express()

let renderer
if (isProd) {
  // In production: create server renderer using server bundle and index HTML
  // template from real fs.
  // The server bundle is generated by vue-ssr-webpack-plugin.
  const bundle = require(resolve('dist/vue-ssr-bundle.json'))
  // src/index.template.html is processed by html-webpack-plugin to inject
  // build assets and output as dist/index.html.
  const template = fs.readFileSync(resolve('dist/index.html'), 'utf-8')
  renderer = createRenderer(bundle, template)
} else {
  // In development: setup the dev server with watch and hot-reload,
  // and create a new renderer on bundle / index template update.
	require(resolve('core/build/dev-server'))(app, (bundle, template) => {
    renderer = createRenderer(bundle, template)
  })
}

function createRenderer (bundle, template) {
  // https://github.com/vuejs/vue/blob/dev/packages/vue-server-renderer/README.md#why-use-bundlerenderer
  return require('vue-server-renderer').createBundleRenderer(bundle, {
    template,
    cache: require('lru-cache')({
      max: 1000,
      maxAge: 1000 * 60 * 15
    })
  })
}

const serve = (path, cache, options) => express.static(resolve(path), Object.assign({
  maxAge: cache && isProd ? 60 * 60 * 24 * 30 : 0
}, options))

const theme = require(resolve('core/build/config.json')).theme

app.use('/dist', serve('dist', true))
app.use('/assets', serve('core/assets', true))
app.use('/assets', serve('src/themes/' + theme + '/assets', true))
app.use(favicon(resolve('core/assets/logo.png')))
app.use('/service-worker.js', serve('dist/service-worker.js', {
  setHeaders: {'Content-Type': 'text/javascript; charset=UTF-8'}
}))

app.use('/service-worker-ext.js', serve('dist/service-worker-ext.js', {
  setHeaders: {'Content-Type': 'text/javascript; charset=UTF-8'}
}))

app.get('*', (req, res) => {
  if (!res.get('Content-Type')) {
    res.append('Content-Type', 'text/html')
  }

  if (!renderer) {
    return res.end('Vue Storefront: waiting for compilation... refresh in 30s :-) Thanks!')
  }

  const s = Date.now()

  const errorHandler = err => {
    if (err && err.code === 404) {
      // res.status(404).end('404 | Page Not Found')
      res.redirect('/page-not-found')
    } else {
      // Render Error Page or Redirect
      res.status(500).end('500 | Internal Server Error')
      console.error(`error during render : ${req.url}`)
      console.error(err)
    }
  }

  renderer.renderToStream({ url: req.url })
    .on('error', errorHandler)
    .on('end', () => console.log(`whole request: ${Date.now() - s}ms`))
    .pipe(res)
})

const port = process.env.PORT || 3000
app.listen(port, () => {
  console.log(`Vue Storefront Server started at http://localhost:${port}`)
})