* Extract the top element frame from ReactDebugCurrentFrame
This is part of a larger refactor to decouple stack addendums. All
renderers have their own way of getting the stack of the currently
executing components.
There is one special case in Element Validator that adds an additional line
for the element being validated. This commit moves that special case in
into the validator.
There is another case where it looked like this was used in shallow
renderer but this is actually something different. It is part of the
component stack. It just happens to be that shallow renderer has a simpler
implementation of the component stack that just happens to be a single
element.
This will let us decouple the implementation to get a stack from
ReactDebugCurrentFrame and put that in each renderer.
* Stop using ReactComponentTreeHook for Fiber
Currently we fall back to ReactCurrentOwner in ReactComponentTreeHook for
stack addendums. We shouldn't need to because we should use
ReactDebugCurrrentFiber.
Ensure we always set both ReactDebugCurrentFiber and ReactDebugCurrentFrame
so that we can rely on these for all stacks.
* Make ReactDebugCurrentFrame implementation independent
Introduced ReactDebugCurrentStack for the Stack renderer which does the
same thing as ReactDebugCurrentFiber.
ReactDebugCurrentFrame no longer keeps track of the current fiber/debug id.
That's handled by the individual renderers.
Instead, it is now used to keep track of the current *implementation* of
the current stack frame. That way it is decoupled from the specifics of
the renderers. There can be multiple renderers in a context. What matters
is which one is currently executing a debuggable context (such as a render
function).
* Add debug frames to ReactPartialRenderer (ssr)
Basic functionality.
* Add shared modules to shallow renderer
This is now needed because we share describeComponentFrame.
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