Extending Error in Javascript with ES6 syntax & Babel

Question

I am trying to extend Error with ES6 and Babel. It isn\'t working out.

class MyError extends Error {
  constructor(m) {
    super(m);
  }
}

var error = new          


        

Answer 1

Not using Babel, but in plain ES6, the following seems to work fine for me:

class CustomError extends Error {
    constructor(...args) {
        super(...args);
        this.name = this.constructor.name;
    }
}

Testing from REPL:

> const ce = new CustomError('foobar');
> ce.name
'CustomError'
> ce.message
'foobar'
> ce instanceof CustomError
true
> ce.stack
'CustomError: foobar\n    at CustomError (repl:3:1)\n ...'

As you can see, the stack contains both the error name and message. I'm not sure if I'm missing something, but all the other answers seem to over-complicate things.