Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/39091
Changelog: [Internal]
Adds a simple typed logging hook to `react-native/dev-middleware`. This is intended to allow integrators to receive events from the dev server, apply any relevant sampling/processing, and log them to a backend. (To be clear, the open source version of React Native does not and will not collect any data.)
WARNING: The API will evolve over the coming weeks/months and is *not guaranteed to be stable* - it might even break between patch releases.
Reviewed By: huntie
Differential Revision: D48466760
fbshipit-source-id: ed1e21fb0dac5d6199ff1ee26017a1d33d9b7d92