A few months ago I wrote about the React Compiler, and my advice for existing code was to leave useMemo and useCallback alone at first, then clean them up slowly, with tests, once the compiler has been running for a while.

I'm curious how that went for people who actually did it.

The public numbers I found are from InfoQ's write-up: Sanity saw 20-30% less render time and latency on their Studio packages (1,231 of 1,411 components compiled on the first pass), and Wakelet's INP went from 275ms to 240ms.

If you're running it in production, did you rip out the manual memoization? Did anything break?

My article, if you want the details on the compiled output: https://neciudan.dev/react-compiler-explained