typebox VS arktype

The documentation can be found here.

So far I like the commonly used approach in the Typescript community best:

1. Create your Schema using https://zod.dev or https://github.com/sinclairzx81/typebox

2. Generate your Types from the schema. It's very simple to create partial or composite types, e.g. UpdateModel, InsertModels, Arrays of them, etc.

3. Most modern Frameworks have first class support for validation, like is a great example Fastify (with typebox). Just reuse your schema definition.

That is very easy, obvious and effective.

There's a ton of schema validators out there and most devs have their personal favorite. Mine was zod and is now typebox + ajv.

If you're willing to document your API with an OpenAPI schema, then it should be possible to generate TypeScript types based on the OpenAPI schema with something like openapi-typescript. Also, Typebox can generate JSON schemas, maybe it can be used to generate something that the front-end can also use?

Well, I do provide extensibility for those bullet points you've listed to varying degrees (both schema and type representation), as well as offering a reference implementation for expressing a entirely different schema specification under the type system (specifically RFC8927 / JSON Type Definition). Reference implementation here. As for JSDoc, It's supported in code hints.

In setting out to build this service, we wanted to use gRPC for its APIs. We’ve been reaching for REST when building APIs so far, primarily out of necessity, i.e., our public APIs needed auto-generated client SDKs and docs for developers working with them. We built those APIs with Fastify and Typebox but felt burned by a code-first approach to generating an OpenAPI spec. I’ll spare you the details and save that experience/learning for another article. Suffice it to say we love gRPC’s schema-first approach. This blog post summarizes our feelings well

I primarily rely on that approach to benchmark ArkType's types.

I was one of the most outspoken supporters of this initiative until I started working on ArkType. That may sound oddly self-serving, and it would be naive to claim objectivity after having invested so much into my own solution to this problem. However, I don't think that's the primary reason I changed my mind.

Since it's not explicitly listed there, I feel I should shout out David Blass and his incredibly cool ArkType project: https://github.com/arktypeio/arktype

He sometimes (used to?) streams himself working on twitch and it's a really comfy place to hang out: https://www.twitch.tv/arktypeio

ArkType is a runtime validation library that can infer TypeScript definitions one-to-one and reuse them as highly-optimized validators for your data.

Could also try ArkType if you haven't seen it.

How would you say the functional chaining style overall compares to a parsed syntax like ArkType?

I'm working on a library called ArkType maybe of interest to you.

If you're interested in the possibilities of this kind of stuff in TypeScript, you should check out ArkType.

Have you tried ArkType?