Support node 24 on GCF Gen1 (for Authentication function triggers)

[th0rgall]

Related issues

Yes, this is a new instance of #1653, but for for node v24 instead of v22.

[REQUIRED] Version info

node: v24.12.0

firebase-functions: 7.0.3

firebase-tools: 15.2.1

firebase-admin: 13.6.0

[REQUIRED] Test case

Not applicable.

[REQUIRED] Steps to reproduce

1. Create a Firebase Authentication trigger function, which is only available on Firebase Functions v1 (as documented in https://firebase.google.com/docs/functions/1st-gen/auth-events)
2. Have an engine specifier of >=24 in your function's package.json
3. Try to deploy said function, get the error: Runtime "nodejs24" is not supported on GCF Gen1 for function [your function name]

[REQUIRED] Expected behavior

I want to use a single node version in my Firebase project, and I would like it to be the latest active LTS node version.

[REQUIRED] Actual behavior

Error: Runtime "nodejs24" is not supported on GCF Gen1 for function [your function name]

Firebase both pushes users to migrate to v2 functions (which support Node v24), and at the same time it does not make Authentication triggers available on v2 (and/or: does not keep the Node engine support in GCF Gen1 functions aligned with Gen2). This makes deployments inconvenient and messy.

Were you able to successfully deploy your functions?

No.

[cabljac]

Hi! thanks for raising this. It's been received. We will provide updates as soon as they're available

[milo-stadion]

Any update on this @cabljac? This is preventing us from upgrading to node 24

[rossano-montori-elp]

This is just frustrating, the problem could be solved in either keep both v1 and v2 always at the same support for nodejs or start providing the same capabilities in v2 functions.

Auth triggers are essentials, v2 requires them as well imo.

Let's forget 'bun' doesn't ever get mentioned in gcp docs.

[HassanBahati]

Hi all, we were able to reproduce this issue via this minimum reproducible example: MRE. We shall notify as soon as we have developments around it. Cheers!

[andrewbrennanfr]

Hi 👋 To be clear, the fix you are working on is supporting node24 in GCF Gen1? Or making available this original reporters function available in Gen2?

[cabljac]

Hi all!

So from what I understand, auth triggers are definitely on the roadmap for Gen 2 functions. I think there is one upstream blocker they're waiting on before they can roll this out.

It sounds like this would resolve the underlying issue of messy deployment setups

There's another issue tracking that here:

#1383

I can't provide an answer right now on a timeline for node 24 on v1 unfortunately. If we receive further information that we can share, we will as soon as possible.