export declare class CircularLinkedList<T> {
    private tail;
    private size;
    /**
     * Rotates the first element to the back of the list
     * @returns {void}
     */
    rotate(): void;
    /**
     * Adds new node to the head of the list
     * @param {T} element value to be added
     */
    addFirst(element: T): void;
    /**
     * Adds new node to the tail of the list
     * @param {T} element value to be added
     */
    addLast(element: T): void;
    /**
     * Removes node from the head of the list
     * @returns {T} value of first node
     */
    removeFirst(): T;
    /**
     * Returns value of the head
     * @returns {T} value of first node
     */
    first(): T;
    /**
     * Returns value of the tail
     * @returns {T} value of last node
     */
    last(): T;
    /**
     * Returns size of the list
     * @returns {number} size of list
     */
    getSize(): number;
    /**
     * Returns true if the list is empty, fasle otherwise
     * @returns {boolean} true if the list is empty
     */
    isEmpty(): boolean;
}