Function dateTimeSchema

Validates datetime inputs and normalizes them to Date objects.

Accepts:

• ISO-8601 datetime strings (validated strictly)
• Date objects (passed through as-is)

Rejects epoch numbers, date-only strings, and other loose inputs.

Composable with .optional(), .nullable(), etc. at the call site:

z.object({
  start: dateTimeSchema(),
  clockIn: dateTimeSchema().optional(),
});
Copy

z.input → string | Date z.output → Date