Preact and Reakit are both awesome libraries, I'd like to be able to use them both, with TypeScript. The issue I'm running into is that Reakit components (e.g. Checkbox) fail to typecheck when using the as prop. I believe this happens because the as prop is typed for React which causes some incompatibility with Preact. I've "solved" the issue by patching the PropsWithAs type from reakit-utils. I'm wondering what library authors are ought to do to fix this problem, because adding types for Preact doesn't seem very sustainable 🤔.
Take a look at ./src/app.tsx to see the issue in action. Run npm run patch-package to apply the "fix" to reakit-utils, which makes things typecheck properly.