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If you want this problem solved, vote on the generators issue in v8:

http://code.google.com/p/v8/issues/detail?id=2355

If v8 implements this, both Firefox and Chrome as well as node.js will have yield, enabling libraries like taskjs [1] to be used.

From taskjs.org:

  spawn(function*() {
      var data = yield $.ajax(url);
      $('#result').html(data);
      var status = $('#status').html('Download complete.');
      yield status.fadeIn().promise();
      yield sleep(2000);
      status.fadeOut();
  });
[1]: http://taskjs.org/



Does anyone here have experience with using one of those X-to-JS compilers that do a similar thing but without requiring those Javascript extensions? The only one I hear people talking about a lot is icedcofeescript but I'm not a big cofeescript fan...

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