I wouldn't write JSON schema definitions directly. Check out typebox. It lets you define a schema in memory and immediately have access to the types https://git

I wouldn't write JSON schema definitions directly. Check out typebox. It lets you define a schema in memory and immediately have access to the types https://github.com/sinclairzx81/typebox https://github.com/sinclairzx81/typebox Combined with ajv you can even have more advanced custom validation with custom error messages.