title: When will proper stack traces be provided on window.onError function?
body: <p>Exceptions/Errors in many other programming languages (say java, ruby) always provide stacktrace/backtrace information.</p>
  
  <p>In JavaScript unhandled Errors get caught by window.onError.</p>
  
  <p>Although that function does not get the Error object, so we have no access to the object's stack property.</p>
  
  <p>Is there any reliable source of information about <strong>when</strong> will there be any change on that?</p>