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Sebastian Markbåge f33a6b69c6 Track Owner for Server Components in DEV (#28753 )

This implements the concept of a DEV-only "owner" for Server Components.
The owner concept isn't really super useful. We barely use it anymore,
but we do have it as a concept in DevTools in a couple of cases so this
adds it for parity. However, this is mainly interesting because it could
be used to wire up future owner-based stacks.

I do this by outlining the DebugInfo for a Server Component
(ReactComponentInfo). Then I just rely on Flight deduping to refer to
that. I refer to the same thing by referential equality so that we can
associate a Server Component parent in DebugInfo with an owner.

If you suspend and replay a Server Component, we have to restore the
same owner. To do that, I did a little ugly hack and stashed it on the
thenable state object. Felt unnecessarily complicated to add a stateful
wrapper for this one dev-only case.

The owner could really be anything since it could be coming from a
different implementation. Because this is the first time we have an
owner other than Fiber, I have to fix up a bunch of places that assumes
Fiber. I mainly did the `typeof owner.tag === 'number'` to assume it's a
Fiber for now.

This also doesn't actually add it to DevTools / RN Inspector yet. I just
ignore them there for now.

Because Server Components can be async the owner isn't tracked after an
await. We need per-component AsyncLocalStorage for that. This can be
done in a follow up.

2024-04-05 12:48:52 -04:00

npm

Remove Blocks (#20138 )

2020-10-30 23:03:45 -07:00

src

Track Owner for Server Components in DEV (#28753 )

2024-04-05 12:48:52 -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 )