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Sebastian Markbåge 9d4fba0788 [Flight] Eval Fake Server Component Functions to Recreate Native Stacks (#29632 )

We have three kinds of stacks that we send in the RSC protocol:

- The stack trace where a replayed `console.log` was called on the
server.
- The JSX callsite that created a Server Component which then later
called another component.
- The JSX callsite that created a Host or Client Component.

These stack frames disappear in native stacks on the client since
they're executed on the server. This evals a fake file which only has
one call in it on the same line/column as the server. Then we call
through these fake modules to "replay" the callstack. We then replay the
`console.log` within this stack, or call `console.createTask` in this
stack to recreate the stack.

The main concern with this approach is the performance. It adds
significant cost to create all these eval:ed functions but it should
eventually balance out.

This doesn't yet apply source maps to these. With source maps it'll be
able to show the server source code when clicking the links.

I don't love how these appear.

- Because we haven't yet initialized the client module we don't have the
name of the client component we're about to render yet which leads to
the `<...>` task name.
- The `(async)` suffix Chrome adds is still a problem.
- The VMxxxx prefix is used to disambiguate which is noisy. Might be
helped by source maps.
- The continuation of the async stacks end up rooted somewhere in the
bootstrapping of the app. This might be ok when the bootstrapping ends
up ignore listed but it's kind of a problem that you can't clear the
async stack.

2024-05-30 12:00:46 -04:00

npm

Don't minify symbols in production builds (#28881 )

2024-04-20 11:23:46 -04:00

src

[Flight] Eval Fake Server Component Functions to Recreate Native Stacks (#29632 )

2024-05-30 12:00:46 -04:00

flight.js

[Codemod] Update copyright header to Meta (#25315 )

2022-10-18 11:19:24 -04:00

index.js

[Codemod] Update copyright header to Meta (#25315 )