Bug: Custom error messages are ignored in zod.date() after transform or coerce

[ZeRiix]

Description

When a Zod schema uses a transformation (transform) or coercion (coerce) to validate a date, the custom error message defined in the configuration of zod.date() is ignored. Instead, the schema returns Zod's default error message: "Invalid date".

Reproduction example

Here is a minimal code snippet to reproduce the issue:

import * as z from "zod";

const zod = z;

const dateInString = "im not a date";

// Case with transform + pipe
console.log(
  "test pipe",
  zod
    .string()
    .transform((date) => new Date(date)) // Transforms the string into a Date
    .pipe(zod.date({ message: "test pipe" })) // Defines a custom error message
    .safeParse(dateInString).error?.errors.map((error) => error.message)
);

// Case with coerce
console.log(
  "test coerce",
  zod.coerce.date({ message: "test coerce" }) // Defines a custom error message
    .safeParse(dateInString).error?.errors.map((error) => error.message)
);

Expected result

In both cases, when the input dateInString is not a valid date, the schema should return the custom error messages:

• "test pipe" for the first case.
• "test coerce" for the second case.

Observed result

However, in both cases, the schema returns the default error message:

test pipe > ["Invalid date"]
test coerce > ["Invalid date"]

Versions

Node: v20.11.1
Zod: v3.24.0

Additional notes

This issue may be problematic for users who want to handle errors with context-specific messages. Thank you for the fantastic work on Zod, and I hope this issue can be resolved! See