Add component instance to ReactDebugTool's onStateUpdated

[omerts]

For sniffing state, it would be nice to actually get the component instance that has raised the onSetState event using ReactDebugTool

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[gaearon]

Hi, thank you for the pull request! I agree this is useful, but there is a work in progress on a special introspection API (#6389, extracted from #6046, and more to follow) that is aimed at providing introspection capabilities like this without exposing internal instances.

#6389 contains more details about the plan. I’ll close this PR as we don’t want to expose the internal instances in the new API (at least we’ll try not to). However I think we’ll be happy to take a contribution that adds something like getState(instanceID) to ReactDebugIntrospection after it lands (in a few weeks).

Cheers!

[omerts]

@gaearon Thanks for the detailed answer. Waiting for the update :)
By the way, we need this because we are working on actually replaying inner component states using the redux dev-tools extension ;)