/* eslint consistent-return:0 import/order:0 */ // 先挂环境变量 require('./env'); const express = require('express'); const logger = require('./logger'); const argv = require('./argv'); const port = require('./port'); const setup = require('./middlewares/frontendMiddleware'); const isDev = process.env.NODE_ENV !== 'production'; const ngrok = (isDev && process.env.ENABLE_TUNNEL) || argv.tunnel ? require('ngrok') : false; const { resolve } = require('path'); const app = express(); // If you need a backend, e.g. an API, add your custom backend-specific middleware here // app.use('/api', myApi); // In production we need to pass these values in instead of relying on webpack setup(app, { outputPath: resolve(process.cwd(), 'build'), publicPath: '/', }); // get the intended host and port number, use localhost and port 3000 if not provided const customHost = argv.host || process.env.HOST; const host = customHost || null; // Let http.Server use its default IPv6/4 host const prettyHost = (host !== 'origin' && customHost) || 'localhost'; // use the gzipped bundle app.get('*.js', (req, res, next) => { req.url = req.url + '.gz'; // eslint-disable-line res.set('Content-Encoding', 'gzip'); next(); }); // Start your app. app.listen(port, host, async err => { if (err) { return logger.error(err.message); } // Connect to ngrok in dev mode if (ngrok) { let url; try { url = await ngrok.connect(port); } catch (e) { return logger.error(e); } logger.appStarted(port, prettyHost, url); } else { logger.appStarted(port, prettyHost); } });