Yes, Bun is very much in beta, but it's already really, really good. I'm fine using it with my hobby projects right now, but once it gets to 1.0 I'll give serious consideration to using it in production code too. The API is really simple, and I love how it just understands Typescript, so you can throw any code in your repo at it and it chugs away happily.
Yes, being able to just run TS directly is very appealing. When I last tried, neither bun nor deno nor ts-node worked out of the box for me. The other two seem to be a bit stuck in the weeds (deno aggressively trying to do its own thing, then backtracking and adding node compatibility back in; ts-node hampered by having to work around weird design decisions in both node and TS) so I wouldn’t be surprised if bun ends up as the winning TS engine.
