import tzdata from "tzdata"; import * as z from "zod"; // @note: This is a custom validation that checks if the timezone is valid and exists in the tzdb library export const timeZone = z.string().refine((tz: string) => Object.keys(tzdata.zones).includes(tz), { message: `Expected one of the following: ${Object.keys(tzdata.zones).join(", ")}`, });