add a constructor to AuthHttpError class

[FabienDehopre]

This fixes the issue #160

[chenkie]

Thanks for this. Tests are passing?

[FabienDehopre]

I did run the command npm run test and all the tests executed successfully.

[FabienDehopre]

In fact, this will not solve the issue for the moment because it seems that browsers don't allow extending built-in class for the moment.
See these issues in TypeScript repo:
microsoft/TypeScript#7639
microsoft/TypeScript#1168

[escardin]

Perhaps something like this? https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error#Custom_Error_Types

[jostschmithals]

I had solved the problem by modifying the extension in the source code like this (but I saw this discussion only now):

export class AuthHttpError extends Error {  
  constructor(message) {  
    super(message);  
    this.message = message;  
  }  
}

For me (using typescript 2.0.3) this simple solution works in all browsers.