Returns the top element of this Stack, or undefined if empty.
Optional options: AbortOptionsReturns the first item of this Queue, or undefined if empty.
Optional options: AbortOptionsRemoves and returns the top element of this Stack, or undefined if empty.
Optional options: AbortOptionsAdds an item to this Queue.
Optional options: AbortOptionsRemoves and returns the first item of this Queue, or undefined if empty.
Optional options: AbortOptionsAdds an element to the front of this Deque.
Optional options: AbortOptionsGenerated using TypeDoc
A Deque that supports peeking the front/back elements.