I generally prefer Zod but in cases where I for one reason or another have to rely on JSON Schema, I use this package: https://www.npmjs.com/package/as-typed ht

I generally prefer Zod but in cases where I for one reason or another have to rely on JSON Schema, I use this package: https://www.npmjs.com/package/as-typed https://www.npmjs.com/package/as-typed which infers TS types directly from a such. No extra build steps required. I then use AJV for runtime validation.