ts-patch

> If you figure out how to do this completely, please contact me—I must know! I think you want to use a TypeScript compiler extension / ts-patch This is a bit difficult as it's not very well documented, but take a look at the examples in https://github.com/nonara/ts-patch Essentially, you add a preprocessing stage to the compiler that can either enforce rules or alter the code It could quietly transform all object like types into having read-only semantics. This would then make any mutation error out, with a message like you were attempting to violate field properties. You would need to decide what to do about Proxies though. Maybe you just tolerate that as an escape hatch (like eval or calling plain JS) Could be a fun project!

I think it's fair to be skeptical, but I'm aligned with the overall approach the author took and I think the approach itself is what is interesting (pure TS + AOT). Author + contributors and ts-patch team[0] seem up for a rewrite in Go based on that thread! Might be bumpy, but a pure TS approach is really appealing. I'm rooting for them :) [0] https://github.com/nonara/ts-patch/issues/181#issuecomment-2...

yup, just found that, super neat, I am 100% interested in using this for other runtime validation... It's interesting because I've always been under the impression the TS team was against the use of types at runtime (that's why projects like https://github.com/nonara/ts-patch exist), but now they're doing it themselves with this project... I wonder what the performance overhead of starting up an instance of tsc in memory is? Is this suitable for low latency situations? Lots of testing to do...

I recently learned about Typescript transformers[0] and wish they were better supported in a first-class manner. Working with ttypescript or ts-patch[1] is easy enough, but it still feels like you're doing something you shouldn't be doing. My goal was to pass the Typescript types to the JS runtime, maybe there's a better way and GPT-4 just led me astray... [0] https://github.com/itsdouges/typescript-transformer-handbook [1] https://github.com/nonara/ts-patch