react

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Sebastian Markbåge 7ec4c55971 createRoot(..., {hydrate:true}) -> hydrateRoot(...) (#21687 )

This adds a new top level API for hydrating a root. It takes the initial
children as part of its constructor. These are unlike other render calls
in that they have to represent what the server sent and they can't be
batched with other updates.

I also changed the options to move the hydrationOptions to the top level
since now these options are all hydration options.

I kept the createRoot one just temporarily to make it easier to codemod
internally but I'm doing a follow up to delete.

As part of this I un-dried a couple of paths. ReactDOMLegacy was intended
to be built on top of the new API but it didn't actually use those root
APIs because there are special paths. It also doesn't actually use most of
the commmon paths since all the options are ignored. It also made it hard
to add only warnings for legacy only or new only code paths.

I also forked the create/hydrate paths because they're subtly different
since now the options are different. The containers are also different
because I now error for comment nodes during hydration which just doesn't
work at all but eventually we'll error for all createRoot calls.

After some iteration it might make sense to break out some common paths but
for now it's easier to iterate on the duplicates.

2021-06-15 13:37:53 -07:00