Next.js API Route with Zod Validation

import type { NextApiRequest, NextApiResponse } from 'next';
import { z } from 'zod';
const schema = z.object({ email: z.string().email(), amount: z.number().int().min(1) });
export default function handler(req: NextApiRequest, res: NextApiResponse) {
  if (req.method !== 'POST') return res.status(405).end();
  const parsed = schema.safeParse(req.body);
  if (!parsed.success) return res.status(422).json({ errors: parsed.error.flatten().fieldErrors });
  return res.status(200).json({ ok: true });
}