Is it possible to customize the error messages?

[erapoport]

I find this very long - "An attempt was made to perform an operation that is invalid", especially because it seems the wrong message for NotPermittedError.

I know I can create my own classes, but the whole point for me is to have your thought-out list of errors, not the ability to create my own per-se.

So I thought to ask if that part of the error can be easily customized.

Thanks!

[David Fenster]

Yes, of course. You can override the generateMessage method on the prototype.
That being said, the constructor allows you to append a clarifying message simply by passing a string to the constructor.

What could you suggest for a revised message?

[erapoport]

Something about being not permitted :)

Thanks, I'll try with generateMessage

[erapoport]

This is what I did:

errors.NotPermittedError.prototype.generateMessage = function ()
{
      return "Operation not permitted: " + this.message;
};

I don't know enough about ES6 scoping to understand why the exact same thing doesn't work with () =>, it says this is undefined :-\

Thanks, it was really easy 👍