Sample of zod bundling options https://github.com/colinhacks/zod/issues/4433

handler.ts

import * as z from "zod/v4-mini";

const DAY_IN_MINUTES = 24 * 60;

export const CarbonAwareTimeWindowPayloadScheme = z.object({
  location: z.enum(["de", "fr", "at"]),
  earliestDateTime: z.optional(z.iso.datetime()),
  latestStartInMinutes: z._default(z.optional(z.number()), DAY_IN_MINUTES),
});

export type CarbonAwareTimeWindowPayload = z.infer<
  typeof CarbonAwareTimeWindowPayloadScheme
>;

export const CarbonAwareTimeWindowResponseScheme = z.object({
  waitTimeInSecondsForOptimalExecution: z.number(),
  optimalExecutionDateTime: z.optional(z.string()),
});

export type CarbonAwareTimeWindowResponse = z.infer<
  typeof CarbonAwareTimeWindowResponseScheme
>;

export const handler = async () => {
  return {
    statusCode: 200,
    body: JSON.stringify({
      message: "This is a placeholder for the Carbon Aware Computing handler.",
    }),
  };
};