[RFC] post-build script in TS 🤑

[louisgv]

nit: would be nice if this script could also be in TS 🤑 (maybe run it via tsx, or run it via some type of bundling technique (prob overkill for a postbuild script)

Also would be nice if we don't have to use require, and instead use async import instead.

I think we can put this under a future issue