Probably not - we wrote it alongside connect-web, so it also launched very recently :)

We do think it's the best option for protobuf code generation in TypeScript, though. It comes from quite a few years of experience with proto & TS: the primary author is also the author and maintainer of protobuf-ts, and we had the author of ts-proto review it and give us a thumbs-up before launch.

There _could_ be Bazel rules for it - we certainly write enough other Bazel integrations. Mind filing an issue on https://github.com/bufbuild/protobuf-es?