Adds an API to explicitly prioritize hydrating the path to a particular DOM node without relying on events to do it.
The API uses the current scheduler priority to schedule it. For the same priority, the last one wins. This allows a similar effect as continuous events. This is useful for example to hydrate based on scroll position, or prioritize components that will upgrade to client-rendered-only content.
I considered having an API that explicitly overrides the current target(s). However that makes it difficult to coordinate across components in an app.
This just hydrates one target at a time but if it is blocked on I/O we could consider increasing priority of later targets too.
Currently, when a node suspends, if its subtree contains a portal, the portal is not hidden. This hides portals in the subtree when it's not wrapped in a host component .
* Prioritize the last continuous target
This ensures that the current focus target is always hydrated first.
Slightly higher than the usual Never expiration time used for hydration.
The priority increases with each new queued item so that the last always
wins.
* Don't export the moving target
It's not useful for comparison purposes anyway.
The error transform works by replacing calls to `invariant` with
an `if` statement.
Since we're replacing a call expression with a statement, Babel wraps
the new statement in an immediately-invoked function expression (IIFE).
This wrapper is unnecessary in practice because our `invariant` calls
are always part of their own expression statement.
In the production bundle, the function wrappers are removed by Closure.
But they remain in the development bundles.
This commit updates the transform to confirm that an `invariant` call
expression's parent node is an expression statement. (If not, it throws
a transform error.)
Then, it replaces the expression statement instead of the expression
itself, effectively removing the extraneous IIFE wrapper.
* Regression test: Suspense + hydration + legacy
* Allow Suspense Mismatch on the Client to Silently Proceed
This fixes but isn't actually the semantics that we want this case to have.
* Update useEditableValue to mirror value cahnges
Previously, the hook initialized local state (in useState) to mirror the prop/state value. Updates to the value were ignored though. (Once the state was initialized, it was never updated.) The new hook updates the local/editable state to mirror the external value unless there are already pending, local edits being made.
* Optimistic CHANGELOG update
* Added additional useEditableValue() unit test cases