How to uninstall Firebase functions emulator after installing it with "firebase init"

Question

I installed the Firebase Functions and Firestore emulators in my project with firebase init > emulators but now realize I don't need the Functions emulator any more so I'm trying to delete it.

How can I uninstall an emulator so that the firebase emulators:start command doesn't try to start it by default?

I tried the following but firebase init > emulators continues to show that the functions emulator is still enabled (green dot) and firebase emulators:start continues to start the functions emulator by default if I don't include the --only firestore flag.

• I reran firebase init > emulators and deselected functions
  • This didn't do anything
• I manually removed the entry from firebase.json

  "emulators": {
    "functions": { // <-- I removed this block
      "port": 5001
    },
    "firestore": {
      "port": 8080
    },
    "ui": {
      "enabled": true
    }
  }
  

• I cleared the emulator cache from ~/.cache/firebase/emulators
• I removed the functions block from firebase.json just to see if that was triggering it.

  {
    "functions": { // <-- I removed this block
      "predeploy": [
        "npm --prefix \"$RESOURCE_DIR\" run clean",
        "npm --prefix \"$RESOURCE_DIR\" run lint",
        "npm --prefix \"$RESOURCE_DIR\" run build"
      ],
      "source": "functions"
    },
    "firestore": {
      "rules": "firestore.rules",
      "indexes": "firestore.indexes.json"
    },
    "emulators": {
      "firestore": {
        "port": 8080
      },
      "ui": {
        "enabled": true
      }
    }
  }
  

After doing all of the above, firebase emulators:start still tries to start functions. I wondered if it might be because the firestore emulator depends on the functions emulator but if that were the case I don't know why it would let me run the firestore emulator alone with --only firestore

Answer 1

In my case, I deleted the Function directory from node_modules and I removed the functions block from firebase.json too.

I fixed it just running npm install firebase again.

Answer 2

If you don't want to use Cloud Functions in your project, you should remove the "functions" folder from your project directory as well.

Also, suggest that you file a bug for this on the firebase-tools GitHub. The fact that the functions emulator runs without configuration in firebase.json feels like a bug, and it didn't used to work that way.