Firebase Cloud functions - Failed to load function definition from source: Restful Endpoints - Failed to add the endpoint defined - node.js

Question

I am using firebase cloud functions with typescript in node 16.14.
My index.ts look like this:
import { FunctionParser } from "firebase-backend";
exports = new FunctionParser({rootPath: __dirname, exports,
verbose:true}).exports;
Here is the addEvent.endpoint.ts:
import { Request, Response } from "express";
import { Endpoint, RequestType } from "firebase-backend";
// import * as functions from "firebase-functions";
const fs = require('firebase-admin');
const serviceAccount = require('./key.json');
fs.initializeApp({
credential: fs.credential.cert(serviceAccount)
});
const db = fs.firestore();
export default new Endpoint(
"addEvent",
RequestType.POST,
(request: Request, response: Response) => {
const message = request.body["message"];
db.collection("events").doc("adkakjagjh").set("message", message);
return response.status(201).send({
message: message
});
}
)
I have the following file structure as below.
My cloud functions worked just recently but some change that I am not aware of has made them error out with the following error for just this 1 endpoint "addEvent.endpoint.ts": Error: Failed to load function definition from source: Failed to generate manifest from function source: Error: Restful Endpoints - Failed to add the endpoint defined in C:/Development/EventFeeder/Backend/Firebase/functions/lib/users/restful/addEvent.endpoint.js to the users Api.
How can I fix this issue?
I am not sure what I need to try because the error message is not that specific about the problem's root cause.
I did not find any post about this particular problem.
I try to run the functions with "npm run build && firebase emulators:start --only functions" and "firebase emulators:start"
The issue disappear when I remove the addEvent.endpoint.ts file

Answer 1

I was facing the same problem, and I figured out that you shouldn't initialize the app (initializeApp()) in each endpoint, just write it in the index.ts one time and everything will work as expected.