Angular Universal

ng-universal.ts

const functions = require("firebase-functions");
import * as express from "express";

import {ngExpressEngine} from "@nguniversal/express-engine";

const {AppServerModule} = require("../dist/app/server/main");
const index = "../dist/app/browser/index";

const app = express();

app.engine(
    "html",
    ngExpressEngine({
      bootstrap: AppServerModule,
    }),
);

app.set("view engine", "html");

app.get("/**/*", (req, res) => {
  res.render(index, {
    req,
    res,
  });
});

exports.ssr = functions.https.onRequest(app);