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Is it somehow possible to visualize (or debug) recompositions?

There’s no official tooling for this yet, but it’s being explored.

Google Play team created a modifier which helps with recomposition visualization:
<https://github.com/android/snippets/blob/master/compose/recomposehighlighter/src/main/java/com/example/android/compose/recomposehighlighter/RecomposeHighlighter.kt>

and the link to the original post: <https://android-developers.googleblog.com/2022/03/play-time-with-jetpack-compose.html>