onions-node/lib/vite_dev_server.js

onions-node backend

const initBackend = require('./init_backend')
const path = require('path')
const http = require('http')
module.exports = (configFilePath, rootPath, {createViteServer}) => {

  if (!configFilePath) {
    return (devServerConfig) => devServerConfig
  }
  let config
  try {
    if (!path.isAbsolute(configFilePath)) {
      configFilePath = path.join(rootPath, configFilePath)
    }
    config = require(configFilePath)
  } catch (e) {
    console.error(e)
    throw new Error('can not find config file, plz check your input!')
  }
  const originalBeforeHook = config.before
  config.before = async (app) => {
    const vite = await createViteServer({
      server: {
        middlewareMode: 'html',
        host: config.host || '0.0.0.0',
        port: config.port || 3000,
      }
    })
    app.use(vite.middlewares)
    originalBeforeHook && originalBeforeHook(app)
  }
  config.inDevServer = true
  const app = initBackend(config, rootPath)

  const port = normalizePort(config.port);
  app.set('port', port);

  /**
   * Create HTTP server.
   */

  const server = http.createServer(app);

  /**
   * Listen on provided port, on all network interfaces.
   */

  server.listen(port);
  server.on('error', onError);
  server.on('listening', onListening);

  /**
   * Normalize a port into a number, string, or false.
   */

  function normalizePort(val) {
    const port = parseInt(val, 10);

    if (isNaN(port)) {
      // named pipe
      return val;
    }

    if (port >= 0) {
      // port number
      return port;
    }

    return false;
  }

  /**
   * Event listener for HTTP server "error" event.
   */

  function onError(error) {
    if (error.syscall !== 'listen') {
      throw error;
    }

    const bind = typeof port === 'string' ? 'Pipe ' + port : 'Port ' + port;

    // handle specific listen errors with friendly messages
    switch (error.code) {
      case 'EACCES':
        console.error(bind + ' requires elevated privileges');
        process.exit(1);
        break;
      case 'EADDRINUSE':
        console.error(bind + ' is already in use');
        process.exit(1);
        break;
      default:
        throw error;
    }
  }

  /**
   * Event listener for HTTP server "listening" event.
   */

  function onListening() {
    const addr = server.address();
  }

}