Plasma Dequeue: task update

projects/Plasma MVP/JavaScript/Dequeue/task.md

@@ -5,6 +5,6 @@ We're going to create two functions that will allow us to see the front item on
 Create two public functions: 
 
 1. a `dequeue` function which removes one item from the queue.
-2. a `peek` function which shows the item that will be removed from the queue on the next `dequeue`. Throw if there is no such item.
+2. a `peek` function which shows the item that will be removed from the queue on the next `dequeue`. This function should return two `uint` values: exit date and UTXO position (in that order). Throw an exception if there is no item on the front of the queue.
 
 > Remember that a Queue is a [FIFO Stucture](?tab=details).