index.js

const { createServer } = require("http");
const { parse } = require("url");
const { join } = require("path");
const moduleAlias = require("module-alias");
const dev = process.env.NODE_ENV !== "production";

if (!dev) {
  moduleAlias.addAlias("react", "preact-compat");
  moduleAlias.addAlias("react-dom", "preact-compat");
}

const next = require("next");
const routes = require("./routes");

const app = next({ dev });
const pagesHandler = routes.getRequestHandler(app);

function staticHandler(req, res) {
  const parsedUrl = parse(req.url, true);
  const rootStaticFiles = ["/service-worker.js"];
  if (parsedUrl.pathname === "/favicon.ico") {
    const filePath = join(__dirname, "static", parsedUrl.pathname);
    app.serveStatic(req, res, filePath);
  } else if (rootStaticFiles.includes(parsedUrl.pathname)) {
    const filePath = join(__dirname, ".next", parsedUrl.pathname);
    app.serveStatic(req, res, filePath);
  } else {
    pagesHandler(req, res, parsedUrl);
  }
}

app.prepare().then(() => {
  createServer(staticHandler).listen(process.env.PORT || 3000);
});