export declare class LinkedListNode<T> {
   value: T | null;
   next: LinkedListNode<T> | null;
   constructor(value: T | null, next?: LinkedListNode<T> | null);
}
export declare class LinkedList<T> {
   head: LinkedListNode<T> | null;
   tail: LinkedListNode<T> | null;
   constructor(head?: LinkedListNode<T> | null, tail?: LinkedListNode<T> | null);
   empty(): boolean;
   prepend(value: T): this;
   append(value: T): this;
   deleteHead(): LinkedListNode<T> | null;
}
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