@quasar/app-webpack/templates/ssr/js/server.js

Quasar Framework App CLI with Webpack

/**
 * More info about this file:
 * https://v2.quasar.dev/quasar-cli-webpack/developing-ssr/ssr-webserver
 *
 * Runs in Node context.
 */

/**
 * Make sure to yarn add / npm install (in your project root)
 * anything you import here (except for express and compression).
 */
import express from 'express'
import compression from 'compression'
import {
  defineSsrCreate,
  defineSsrInjectDevMiddleware,
  defineSsrListen,
  defineSsrClose,
  defineSsrServeStaticContent,
  defineSsrRenderPreloadTag
} from '#q-app/wrappers'

/**
 * Create your webserver and return its instance.
 * If needed, prepare your webserver to receive
 * connect-like middlewares.
 *
 * Can be async: defineSsrCreate(async ({ ... }) => { ... })
 */
export const create = defineSsrCreate((/* { ... } */) => {
  const app = express()

  // attackers can use this header to detect apps running Express
  // and then launch specifically-targeted attacks
  app.disable('x-powered-by')

  // place here any middlewares that
  // absolutely need to run before anything else
  if (process.env.PROD) {
    app.use(compression())
  }

  return app
})

/**
 * Used by Quasar SSR dev server to inject middleware into the webserver.
 * It uses it to handle Webpack dev server, handle public paths, etc.
 * The given middleware is compatible with `node:http`'s Server, Express, Connect, etc.
 *
 * Can be async: defineSsrInjectDevMiddleware(async ({ app }) => { ... })
 */
export const injectDevMiddleware = defineSsrInjectDevMiddleware(({ app }) => {
  return (middleware) => {
    app.use(middleware)
  }
})

/**
 * You need to make the server listen to the indicated port
 * and return the listening instance or whatever you need to
 * close the server with.
 *
 * The "listenResult" param for the "close()" definition below
 * is what you return here.
 *
 * For production, you can instead export your
 * handler for serverless use or whatever else fits your needs.
 *
 * Can be async: defineSsrListen(async ({ app, devHttpsApp, port }) => { ... })
 */
export const listen = defineSsrListen(({ app, devHttpsApp, port }) => {
  const server = devHttpsApp || app
  return server.listen(port, () => {
    if (process.env.PROD) {
      console.log('Server listening at port ' + port)
    }
  })
})

/**
 * Should close the server and free up any resources.
 * Will be used on development only when the server needs
 * to be rebooted.
 *
 * Should you need the result of the "listen()" call above,
 * you can use the "listenResult" param.
 *
 * Can be async: defineSsrClose(async ({ listenResult }) => { ... })
 */
export const close = defineSsrClose(({ listenResult }) => {
  return listenResult.close()
})

const maxAge = process.env.DEV
  ? 0
  : 1000 * 60 * 60 * 24 * 30

/**
 * Should return a function that will be used to configure the webserver
 * to serve static content at "urlPath" from "pathToServe" folder/file.
 *
 * Notice resolve.urlPath(urlPath) and resolve.public(pathToServe) usages.
 *
 * Can be async: defineSsrServeStaticContent(async ({ app, resolve }) => {
 * Can return an async function: return async ({ urlPath = '/', pathToServe = '.', opts = {} }) => {
 */
export const serveStaticContent = defineSsrServeStaticContent(({ app, resolve }) => {
  return ({ urlPath = '/', pathToServe = '.', opts = {} }) => {
    const serveFn = express.static(resolve.public(pathToServe), { maxAge, ...opts })
    app.use(resolve.urlPath(urlPath), serveFn)
  }
})

const jsRE = /\.js$/
const cssRE = /\.css$/
const woffRE = /\.woff$/
const woff2RE = /\.woff2$/
const gifRE = /\.gif$/
const jpgRE = /\.jpe?g$/
const pngRE = /\.png$/

/**
 * Should return a String with HTML output
 * (if any) for preloading indicated file
 */
export const renderPreloadTag = defineSsrRenderPreloadTag((file/* , { ssrContext } */) => {
  if (jsRE.test(file) === true) {
    return `<script src="${file}" defer crossorigin></script>`
  }

  if (cssRE.test(file) === true) {
    return `<link rel="stylesheet" href="${file}" crossorigin>`
  }

  if (woffRE.test(file) === true) {
    return `<link rel="preload" href="${file}" as="font" type="font/woff" crossorigin>`
  }

  if (woff2RE.test(file) === true) {
    return `<link rel="preload" href="${file}" as="font" type="font/woff2" crossorigin>`
  }

  if (gifRE.test(file) === true) {
    return `<link rel="preload" href="${file}" as="image" type="image/gif" crossorigin>`
  }

  if (jpgRE.test(file) === true) {
    return `<link rel="preload" href="${file}" as="image" type="image/jpeg" crossorigin>`
  }

  if (pngRE.test(file) === true) {
    return `<link rel="preload" href="${file}" as="image" type="image/png" crossorigin>`
  }

  return ''
})