export declare class LinkedList {
    constructor();
    head: any;
    tail: any;
    first: () => any;
    last: () => any;
    toArray: () => any;
    push: (data: any) => void;
    unshift: (data: any) => void;
    fromArray: (data: any) => void;
    pop: () => any;
    shift: () => any;
    clear: () => void;
}