Firebase functions keeps throwing undefined error when using firebase

I am using the base typescript install of firebase init functions. My project keeps throwing the following error:

> npm run build:watch | firebase emulators:start --only functions

i  emulators: Starting emulators: functions
⚠  functions: The following emulators are not running, calls to these services from the Functions emulator will affect production: auth, firestore, database, hosting, pubsub, storage, eventarc
⚠  Your requested "node" version "16" doesn't match your global version "18". Using node@18 from host.
i  ui: Emulator UI logging to ui-debug.log
i  functions: Watching "/Users/petertoth/Documents/AntlerSlackBotFE/firebase/functions" for Cloud Functions...
⬢  functions: Failed to load function definition from source: FirebaseError: Failed to load function definition from source: Failed to generate manifest from function source: TypeError: Cannot read properties of undefined (reading 'INTERNAL')

Env:

local:

% firebase -V: 11.9.0
% tsc -V: Version 4.8.3
% node --version: v18.7.0
% npm --version: 8.15.0

project:

"dependencies": {
    "firebase-admin": "^10.2.0",
    "firebase-functions": "^3.23.0"
  },
  "devDependencies": {
    "typescript": "^4.6.4"
  },

Steps to reproduce:

1. firebase init functions
2. copy and pasta the following into index.ts, the actual values of firebaseConfig do not matter:

const firebaseConfig = {
    apiKey: "no",
    authDomain: "Iamnot.myjazz.com",
    projectId: "heloogroot",
    storageBucket: "hello.bello.com",
    messagingSenderId: "123456789123",
    appId: "1:64646546:web:123456789123",
    measurementId: "G-JANDSJANS5"
  };


const app = initializeApp(firebaseConfig)
const fn = functions.region('europe-west1')
const db = getFirestore()


export const healthCheckDB = fn.https.onRequest(async (request, response) => {

    const result = (await db.doc('doesnmatter').get()).data()
    response.send(result)
});

3. run npm run build && firebase emulators:start --only functions