Validation Example

Validate query and body with Zod by exporting a schema from your route:

import { z } from "zod";

export const schema = {
  get: { query: z.object({ limit: z.coerce.number().optional() }) },
  post: { body: z.object({ name: z.string().min(1), price: z.number() }) },
};

export function GET(req: BurgerRequest<{ query: z.infer<typeof schema.get.query> }>) {
  const { limit } = req.validated?.query ?? {};
  return Response.json({ items: [], limit });
}

See Validation, Schema Definition, and the Todo API tutorial.