Function shiftNode

shiftNode<L extends IDoublyLinkedList<IDoublyLinkedListNode>>(
instance: L,
): undefined | NonNullable<L["head"]>
Removes and returns the first node from a doubly linked list.
- Time Complexity: O(1)
- Space Complexity: O(1)
Type Parameters
- L extends IDoublyLinkedList<IDoublyLinkedListNode>
  The type of the list.
Parameters
- instance: L
  The list instance.
Returns undefined | NonNullable<L["head"]>
The removed node, or undefined if the list is empty.
- Defined in src/core/doubly-linked-list/list.ts:133