Request validation

All you need to enable request validation is to register a validationFail handler.

function validationFailHandler(c: Context, _req: Request, res: Response) {
  return res.status(400).json({ status: 400, err: c.validation.errors });
}
api.register("validationFail", validationFailHandler);

Once registered, this handler gets called if any JSON Schemas in either operation parameters (in: path, query, header, cookie) or requestPayload don't match the request.

The context object c gets a validation property with the validation result.