send/server/bin/dev.js

const assets = require('../../common/assets');
const routes = require('../routes');
const pages = require('../routes/pages');
const tests = require('../../test/frontend/routes');
const express = require('express');
const expressWs = require('@dannycoates/express-ws');
const morgan = require('morgan');
const config = require('../config');

const ID_REGEX = '([0-9a-fA-F]{10, 16})';

module.exports = function(app, devServer) {
  const wsapp = express();
  expressWs(wsapp, null, { perMessageDeflate: false });
  routes(wsapp);
  wsapp.ws('/api/ws', require('../routes/ws'));
  wsapp.listen(8081, config.listen_address);

  assets.setMiddleware(devServer.middleware);
  app.use(morgan('dev', { stream: process.stderr }));
  function android(req, res) {
    const index = devServer.middleware.fileSystem
      .readFileSync(devServer.middleware.getFilenameFromUrl('/android.html'))
      .toString()
      .replace(
        '<base href="file:///android_asset/" />',
        '<base href="http://localhost:8080/" />'
      );
    res.set('Content-Type', 'text/html');
    res.send(index);
  }
  if (process.env.ANDROID) {
    // map all html routes to the android index.html
    app.get('/', android);
    app.get(`/share/:id${ID_REGEX}`, android);
    app.get('/completed', android);
    app.get('/preferences', android);
    app.get('/options', android);
    app.get('/oauth', android);
  }
  routes(app);
  tests(app);
  // webpack-dev-server routes haven't been added yet
  // so wait for next tick to add 404 handler
  process.nextTick(() => app.use(pages.notfound));
};