TypeScript schema serialization

[FlatMapIO]

Inspired by the langfun project, I created a schema to TypeScript generation feature on valibot, which is used for structured queries with LLMs. After some time of use, I found this to be a very powerful method, allowing almost all models to reliably generate complex types of objects, while commercial LLMs that support JSON Schema often make errors. Today, I discovered that arktype is the most comprehensible solution for performing this task. I hope arktype can include a method to directly serialize the schema into TypeScript textual representation, with validation and descriptions serialized into field comments. This will make it very easy for us to implement a high-level LLM query library like langfun in TypeScript.