export default class LinkedNode<T> {
    private key;
    private value;
    private nextKey;
    private beforeKey;
    constructor(key: string, value: T, nextKey?: string, beforeKey?: string);
    hasNext(): boolean;
    hasBefore(): boolean;
    getNextKey(): string;
    getBeforeKey(): string;
    getValue(): T;
    getKey(): string;
    setNextKey(key: string): void;
    setBeforeKey(key: string): void;
    setValue(value: T): void;
    setKey(key: string): void;
}