I want to customize the default exception handler behavior and to do that I want to override the ExceptionHandler class, but I get the next error when I use the next code
I think it's bug. ExceptionHandler must be exported here, but it's not.
ExceptionHandler
For now for experimenting you can import ExceptionHandler like:
import { ExceptionHandler } from 'angular2/src/core/facade/exceptions';
Check out this plunker