TanStack Start: show server function name in traces, errors and other places

[valerii15298]

Problem Statement

When using server functions in traces/errors I see something like this:

/_serverFn/be42578bc8c2e98bb15e6670dd74cb9041e03d44f3988047fbb63f2b32a2eb7c

It is really difficult to understand which server function it is... Which makes debugging a lot harder

Solution Brainstorm

When creating server function there is name attached to it.

const doSomething = createServerFn().handler(() => "so some work");
console.dir(doSomething.serverFnMeta); // has name key

Also in middleware there is serverFnMeta which has name.
Since sentry already has the global function middleware which executes before every server function, it should be possible to get server function name from there.

Would be good to show name of server function to improve debugging.

Additional Context

Related: #20594

Priority

No response

[linear-code]

JS-2617

[nicohrubec]

Hey, thanks for writing in. I agree this would be good to show and I tried to make this work a while back. The issue back then was that at the point where I was trying to grab the server function name, the name was already encoded and there was no way to get the original server function name. Maybe this has changed since then, I'll give it another try.