RangeError when using queue with 5000+ tasks.

I have made a pull request with a test that fails. https://github.com/caolan/async/pull/509

RangeError Maximum call stack size exceeded

It is basicaly this

var q = async.queue(function(task,cb) { cb(); })
q.pause();

for (var i=0; i< 5000; i++) {
  q.push({ index: i });
}

q.resume();

When cb is called there can be RangeError’s I don’t know enough to figure out why though.

[caolan]

You need to call cb() asynchronously. Try setImmediate(cb) instead.

[bishopZ]

Btw, Frame.js v2 resolved this issue. https://github.com/bishopZ/Frame.js