Find a nested label's time

Labels are timeline-specific, so you can't tell a timeline to move its playhead to a label that exists in a nested timeline. So here's a helper function that lets you find a nested label and calculate where that lines up on the [parent/ancestor] timeline:

function getNestedLabelTime(timeline, label) {
  let children = timeline.getChildren(true, false, true),
    i = children.length,
    tl,
    time;
  while (i--) {
    if (label in children[i].labels) {
      tl = children[i];
      time = tl.labels[label];
      break;
    }
  }
  if (tl) {
    while (tl !== timeline) {
      time = tl.startTime() + time / tl.timeScale();
      tl = tl.parent;
    }
  }
  return time;
}

So here's an example usage: tl.seek(getNestedLabelTime(tl, "someNestedLabel"))