cannot deploy backend function

[Rayapati-Tejasree]

Hi!
i cloned your git and did the changes according to the readme file. I successfully run the project. But couldn't deploy the backend function bcz of deploy --only "pairing" cmd.
ERROR SYAS - Cannot understand what targets to deploy/serve. No targets in firebase.json match '--only pairing.
Should i config the json file or did i miss something?
I'm new starting stage to development and this stuff ! sorry if it is a dumb qns !It would be great if you would help me!

[simonbengtsson]

Likely there is some kind of config issues with your firebase project. I would advice you to follow the instructors in the documentation and deploy a "hello world" function first ensuring that work and then changing this code to the pairing function in this repository.

Firebase function docs: https://firebase.google.com/docs/functions

[tanishbajaj101]

i'm facing the same issue, were you able to solve it?

[gisborne]

Add me to the "me too" list.

[simonbengtsson]

Must be some missing/wrong in the readme then. Some suggestions

• Does it work if you run "firebase deploy"? ie without the only flag.
• Does it work to deploy a function if following official get started guide? https://firebase.google.com/docs/functions/get-started?gen=2nd

[gisborne]

Okay.

This led me to a bunch of things I needed to do.

On the Firebase admin page, I had to enable functions, which required me to set up billing and also to upgrade the project (I wasn't clear what this did), but seemed a separate step, required to turn on billing. which appears to be needed to turn on functions.

In the course of doing this, it walked me through doing a few things. Note that I chose to turn on linting when I installed firebase-tools, which is part of what I have to follow up on. Also, the latest version of firebase-tools appears to not work on Mac (I get /bin/sh: --: invalid option, so I had to downgrade firebase-tools:

npm -g install firebase-tools@12.0.0 #12.1.0 might work
npm install eslint

Also removed this:

,
      "predeploy": [
        "npm --prefix \"$RESOURCE_DIR\" run lint"
      ]

from firebase.json.

It seems my particular version of node (21) doesn't work. I tried this:

 sudo npm cache clean -f
 sudo npm install -g n
 sudo n stable
 brew install node@22
 node -v
v22.6.0

firebase deploy now gives me:

Error: Detected node engine >=16 in package.json, which is not a supported version. Valid versions are 10, 12, 14, 16, 18, 20, 22

I tried to fix this with "node": ">=16" in package.json, but as you see it still doesn't work. So I changed it to "22". Now I get:

Failed to create function projects/qrit-47b40/locations/us-central1/functions/pairing.

I've tried to get this to work, and I've changed a bunch of things so far without success.

Honestly, it looks like someone from this project should try going through this process themselves, although I will keep trying, but I will have trouble producing accurate instructions with all the flailing around I'm doing.

Also, it's a little troubling that I have to turn on billing, given that the instructions have us using an anonymous endpoint, so if we could not do that (it looks like billing is required for functions, so this probably means not using an anonymous account), that would probably be good.

[Rayapati-Tejasree]

i'm facing the same issue, were you able to solve it?

Hi! Sry for the delay, I'm not working on it anymore after that. But it asked for billing in firebase functions. I did changes in base code itself according to me where I managed to run the application but still I couldn't pair the devices.