Schema with 'default: "0000-00-00"' became Zod validator 'default(0)'

[robogeek]

Description

I have an OpenAPI spec where one schema object is declared as so:

    dateTime:
      type: string
      format: date-time
      description: datetime in ISO 8601 format
      example: 2023-06-15T09:30:00Z
      default: "0000-00-00"

The idea of this default value is that it's a string parseable as a Date, but produces a value we can readily detect as invalid.

The generated code from openapi-typescript is:

/**
 * datetime in ISO 8601 format
 *
 * @format date-time
 * @example "2023-06-15T09:30:00.000Z"
 * @default 0000-00-00
 */
export type DateTime = string;

That's a good correspondence to the schema.

The output from ts-to-zod is:

export const dateTimeSchema = z.string().datetime().default(0);

The correspondence fell apart. It got string and datetime correct, but the default value went sideways. It's as if it evaluated @default 0000-00-00 as an arithmetic expression, producing a Number.

Name	Version
@openapi-codegen/typescript	8.0.0
ts-to-zoc	3.4.1
Node.js	20.10.0
OS + version	Ubuntu 20.04

Reproduction

See above

Expected result

export const dateTimeSchema = z.string().datetime().default('0000-00-00');