queue.flushQueuedTask(fn)

Sometimes, it's necessary for a task to be immediately invoked. For example, an observation might depend on another observation currently in the queue. If this happens, the queued task can be run immediately.

const task = function task() {
    console.log( "taskA" );
};

priorityQueue.enqueue( task, null, [], { priority: 5 } );
priorityQueue.enqueue( function() {
    console.log( "taskB - start" );
    priorityQueue.flushQueuedTask( task );
    console.log( "taskB - end" );
}, null, [], { priority: 0 } );

// Logs:
//   taskB - start
//   taskA
//   taskB - end