declare class ListNode {
    val: number;
    next: ListNode | null;
    constructor(val: number, next?: ListNode | null);
    getLastNode(): ListNode;
    push(...nums: number[]): this;
    static from(list: number[]): ListNode;
    toArray(): number[];
    sort(compareFn?: (a: number, b: number) => number): ListNode;
}

export { ListNode as default };