JavaScript rethrowing an Exception preserving the stack trace

Question

In Chrome, when an exception occurs, it prints a stack trace to the console log. This is extremely useful, but unfortunately in cases where an exception has been rethrown th

Answer 1

The best you can do is grab the original stack and print it. I use this in unit testing tools.

try{
  ...
}
catch(e){
    console.log(e.stack);
    console.log(e.message);
    throw(e);
}

Answer 2

In my situation console.log() was not possible. What I did is:

}catch( error ){
 // 'throw' replaces the stack trace.
 // To preserve the stack add it to the message.
 error.message += '; Stack trace: ' + error.stack;
 throw error;
}

Answer 3

This is a known bug in Chrome, and unfortunately there's no workaround that I'm aware of.