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

Given this the accepted answer no longer works you could always use a factory as an alternative (repl):

function ErrorFactory(name) {
   return class AppError extends Error {
    constructor(message) {
      super(message);
      this.name = name;
      this.message = message; 
      if (typeof Error.captureStackTrace === 'function') {
        Error.captureStackTrace(this, this.constructor);
      } else { 
        this.stack = (new Error(message)).stack; 
      }
    }
  }     
}

// now I can extend
const MyError = ErrorFactory("MyError");


var myerror = new MyError("ll");
console.log(myerror.message);
console.log(myerror instanceof Error);
console.log(myerror.name);
console.log(myerror.stack);