ES6 Promise in Internet Explorer 9

[jessedijkstra]

I've tried to use the ES6 Promise through BabelJS with Webpack in Internet Explorer 9, but the moment I include a Promise IE9 errors.

It gives me the following error: 'SCRIPTXXX: Invalid calling object'.

Debugging the error points to the following line in the code:

  // Modern browsers, skip implementation for WebWorkers
  // IE8 has postMessage, but it's sync & typeof its postMessage is object
  } else if(addEventListener && isFunction(postMessage) && !global.importScripts){
    defer = function(id){
      postMessage(id, '*');
    };
    addEventListener('message', listner, false);
  // WebWorkers

It gives me the error at the addEventListener('message', listner, false); statement.

I hope I have time to debug the error further the coming weekend, but for now I'm using the es6-promise polyfill which works fine.

[zloirock]

Looks like #62 - webpack problem, but I'll try fix at core-js side when I'll have time.

[jessedijkstra]

Awesome, thanks.