I’d like to validate untrusted config JSON submitted to my application against a TypeScript interface. If it’s bad, I’d like to serialize a TypeScript object with default values, and suggest it as a pattern.
Last time I looked, TypeScript didn’t provide runtime access to types and interfaces, so I’m not clear if that’s possible without build-time tomfoolery.
I’d prefer to avoid JSON schemas if I can, but I guess that’s an option too.
Are there libraries or new-ish language features that I could use?
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Maybe Zod would fit the bill.
https://github.com/fabien0102/ts-to-zod looks promising. Thanks!
Try Valibot. It is inspired by Zod.
According to the Valibot FAQ, the main difference with Zod is:
The functionality of Valibot is very similar to Zod. The biggest difference is the modular design of our API and the ability to reduce the bundle size to a minimum through tree shaking and code splitting. Depending on the schema, Valibot can reduce the bundle size up to 95% compared to Zod. Especially for client-side validation of forms and serverless environments this can be a big advantage.
Thanks! I’ll take a look.
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