How do I submit a bugfix for multiple branches?

[Luke Albao]

Hello! 

I'm a node user, and I've traced a small bug to a change back in v8.x of v8. I'd like to submit a patch, but I'm unsure of the best way to go about this. It would be great to have this affect any downstream release that is used by a supported Node version. 

It's a small change and I'd be thrilled to land it. Is that something I can do in v8/v8, or should I try to land patches in nodejs/nodejs branches and then get them back upstream?

Thanks!

Luke

[Ben Noordhuis]

Node.js maintainer and V8 committer speaking. The bug fix should first
land in V8's ToT (tip-of-top). When merged, open a cherry-pick pull
request to node's main branch.

Your cherry-pick is normally back-ported to release branches
automatically (first Current, then later LTS.) If it doesn't apply
cleanly or causes test suite regressions, you'll get a ping on your
pull request with a request to back-port it manually.

If you have a fix for an issue that doesn't exist in upstream V8
anymore, you can open a node pull request targeting the affected
branch directly but mention in the pull request why you're skipping
the "upstream first" process, otherwise it'll get rejected out of
hand.

More details here:
https://github.com/nodejs/node/blob/main/doc/contributing/maintaining/maintaining-V8.md