There is no way to determine that an error thrown is a `ZodError`

In Zod v1, to determine whether a thrown error is an error thrown by Zod, I did if (error.constructor.name === 'ZodError') {...}.

In Zod v3, this is not possible anymore (at least when importing the module using ESM), because you minimize the source code, and the name of the constructor becomes "n" 😬.

Would love it if there was a way to know if the error is a Zod error. As a suggestion, have the code values all start with a ZOD_ERROR prefix, or have an isZodError field in the error, or perhaps even ensure that the constructor name will still be ZodError.

Currently, I’m working around this by a heuristic: checking that the error has a path property that is an array. 😱

BTW, kudos for adding ESM support! 🎉

[colinhacks]

I now manually set this.name = "ZodError"; in the ZodError constructor so I believe your old approach should work again in zod@3.7+

[giltayar]

@colinhacks I actually don’t remember 😊, but the code spefically uses error.constructor.name. But I did have a problem. My guess is that I used Zod in another realm (e.g. a Node.js VM), it threw the exception, and I caught it in the main code.

But as I said above, once I realized I can use instanceof, I’m fine with not fixing this. I’ll close it.

And, again, thanks for the ESM support!