8000 Question(v4): What is the behavior of the error message for the `file` schema in `@zod/mini`? · Issue #4262 · colinhacks/zod · GitHub
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Question(v4): What is the behavior of the error message for the file schema in @zod/mini? #4262

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chimame opened this issue Apr 23, 2025 · 1 comment
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Question(v4): What is the behavior of the error message for the file schema in @zod/mini? #4262

chimame opened this issue Apr 23, 2025 · 1 comment

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@chimame
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chimame commented Apr 23, 2025

Overview

Error messages output differ depending on whether the file schema is used in ESM or CJS. Is this the intended behavior?

Details

I checked this with the sample code.

import { file } from '@zod/mini';
const fileEsm = file();
const fileCjs = require('@zod/mini').file();
console.log(fileEsm.safeParse('').error, fileCjs.safeParse('').error);
// $ZodError {
//   issues: [
//     {
//       expected: 'file',
//       code: 'invalid_type',
//       path: [],
//       message: 'Invalid input: expected file, received string'
//     }
//   ]
// } $ZodError {
//   issues: [
//     {
//       expected: 'file',
//       code: 'invalid_type',
//       path: [],
//       message: 'Invalid input' <-- different error messages are output.
//     }
//   ]
// }
```ts
@chimame chimame mentioned this issue Apr 23, 2025
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@colinhacks
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Zod Mini isn't supposed to load the English locale by default...without a locale all error messages default to "Invalid input". Perhaps the code that loads the en.ts locale in "zod/v4" is getting eagerly executed in one environment but not the other?

That said, I'm not able to replicate on the latest betas. How are you running this file? Could you upgrade and again with the latest beta?

PS: Note that you'll need to rewrite your v4 imports to "zod/v4-mini" after upgrading; for more information, see #4371 for details

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