Function cleanUpNextTick

docs/app/js/sanddance-app.js:52765–52771

()

var currentQueue;
var queueIndex = -1;
function cleanUpNextTick() {
    if (!draining || !currentQueue) return;
    draining = false;
    if (currentQueue.length) queue = currentQueue.concat(queue);
    else queueIndex = -1;
    if (queue.length) drainQueue();
}
function drainQueue() {
    if (draining) return;
    var timeout = runTimeout(cleanUpNextTick);