itty-router + zod query validation

zod-itty-router-middleware.ts

import { RequestHandler, IRequest, json } from "itty-router";
import { z } from "zod";

export const zodQuery =
  <T extends z.ZodRawShape>(
    rawShape: T
  ): RequestHandler<
    IRequest & { data: z.infer<z.ZodObject<typeof rawShape>> }
  > =>
  (request) => {
    request.data = z.object(rawShape).parse(request.query);
  };
  
  
router.get("/message", zodQuery({ name: z.string(), age: z.number() }), (req) => {
  const { name, age } = req.data // Is now validated and typed
  return json({ name, age })
})