Function startHtmlServer

packages/react-server-cli/src/commands/start.js:63–125

(serverRoutes, port, bindIp, httpsOptions, customMiddlewarePath)

// http://host:port/. returns an object with two properties, started and stop;
// see the default function doc for explanation.
const startHtmlServer = (serverRoutes, port, bindIp, httpsOptions, customMiddlewarePath) => {
	const server = express();
	const httpServer = httpsOptions ? https.createServer(httpsOptions, server) : http.createServer(server);
	let middlewareSetup = (server, rsMiddleware) => {
		server.use(compression());
		server.use(bodyParser.urlencoded({ extended: false }));
		server.use(bodyParser.json());
		server.use(helmet());
		rsMiddleware();
	};

	return {
		stop: serverToStopPromise(httpServer),
		started: new Promise((resolve, reject) => {
			logger.info("Starting HTML server...");

			let rsMiddlewareCalled = false;
			const rsMiddleware = () => {
				rsMiddlewareCalled = true;

				expressState.extend(server);

				// parse cookies into req.cookies property
				server.use(cookieParser());

				// sets the namespace that data will be exposed into client-side
				// TODO: express-state doesn't do much for us until we're using a templating library
				server.set('state namespace', '__reactServerState');

				server.use((req, res, next) => {
					reactServer.middleware(req, res, next, require(serverRoutes));
				});
			};

			if (customMiddlewarePath) {
				const customMiddlewareDirAb = path.resolve(process.cwd(), customMiddlewarePath);
				middlewareSetup = require(customMiddlewareDirAb).default;
			}

			middlewareSetup(server, rsMiddleware);

			if (!rsMiddlewareCalled) {
				console.error("Error react-server middleware was never setup in custom middleware function");
				reject("Custom middleware did not setup react-server middleware");
				return;
			}

			httpServer.on('error', (e) => {
				console.error("Error starting up HTML server");
				console.error(e);
				reject(e);
			});
			httpServer.listen(port, bindIp, (e) => {
				if (e) {
					reject(e);
					return;
				}
				logger.info(`Started HTML server over ${httpsOptions ? "HTTPS" : "HTTP"} on ${bindIp}:${port}`);