Javascript 使用express时发生firebase服务错误（已启用区域）

我创建了一个函数

ssr

，它使用express服务器来处理请求，但是当我通过http请求运行该函数时

http://localhost:4201//us-central1/ssr

，我得到一个错误：

import * as functions from "firebase-functions";
const app = require("../server");  

//this function works
export const test = functions.https.onRequest((request, response) => {
  response.send("firebase function works");
});

//this function doesn't work
export const ssr = functions.https.onRequest(app);

我认为这个错误是由angular zone

import“zone.js/dist/zone节点”引起的

server.ts（简化）：

TypeError:func不是函数
运行函数时（firebase tools\lib\emulator\functionsEmulatorRuntime.js:621:20）
在firebase tools\lib\emulator\functionsEmulatorRuntime.js:596:19
在Generator.next（
你解决问题了吗？我在一个基本的express项目上也得到了同样的结果否，@AAverin。。。
import "zone.js/dist/zone-node";
import express from "express";
import * as bodyParser from "body-parser";
import cors from "cors"; 


const PORT = process.env.PORT || 4200;
const DIST_FOLDER = join(process.cwd(), "./dist/browser"); 

const {
  AppServerModuleNgFactory,
  LAZY_MODULE_MAP,
  ngExpressEngine,
  provideModuleMap
} = require("./dist/server/main");

app.engine(
  "html",
  ngExpressEngine({
    bootstrap: AppServerModuleNgFactory,
    providers: [provideModuleMap(LAZY_MODULE_MAP)]
  })
);

app.set("view engine", "html");
app.set("views", DIST_FOLDER);
app.use(bodyParser.json());
app.use(cors());


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


app.listen(PORT, () => {
  console.log(`Node Express server listening on http://localhost:${PORT}`);
});

export { app }; //for firebase


TypeError: func is not a function
    at runFunction (firebase-tools\lib\emulator\functionsEmulatorRuntime.js:621:20)
    at firebase-tools\lib\emulator\functionsEmulatorRuntime.js:596:19
    at Generator.next (<anonymous>)
    at firebase-tools\lib\emulator\functionsEmulatorRuntime.js:7:71
    at new ZoneAwarePromise (zone.js\dist\zone-node.js:931:29)
    at __awaiter (firebase-tools\lib\emulator\functionsEmulatorRuntime.js:3:12)
    at runFunction (firebase-tools\lib\emulator\functionsEmulatorRuntime.js:593:12)
    at firebase-tools\lib\emulator\functionsEmulatorRuntime.js:620:15
    at Generator.next (<anonymous>)
    at firebase-tools\lib\emulator\functionsEmulatorRuntime.js:7:71