export interface ILinkedListItem<T> {
    readonly value: T;
    readonly next?: ILinkedListItem<T> | undefined;
    readonly prev?: ILinkedListItem<T> | undefined;
    readonly position: number;
    readonly list: LinkedList<T>;
}
export interface ILinkedList<T> extends Iterable<ILinkedListItem<T>> {
    readonly root: ILinkedListItem<T> | undefined;
    readonly last: ILinkedListItem<T> | undefined;
    readonly length: number;
    add(value: T): ILinkedListItem<T>;
    remove(item: ILinkedListItem<T>): void;
    removeLast(): void;
    removeFirst(): void;
    clear(): void;
}
interface LinkedListItem<T> extends ILinkedListItem<T> {
    next?: LinkedListItem<T>;
    prev?: LinkedListItem<T>;
    position: number;
    list: LinkedList<T>;
}
export declare class LinkedList<T> implements ILinkedList<T> {
    private _root;
    private _last;
    private _length;
    get root(): ILinkedListItem<T> | undefined;
    get last(): ILinkedListItem<T> | undefined;
    get length(): number;
    [Symbol.iterator](): Generator<LinkedListItem<T>, void, unknown>;
    add(value: T): ILinkedListItem<T>;
    remove(item: ILinkedListItem<T> | null | undefined): void;
    removeLast(): void;
    removeFirst(): void;
    clear(): void;
}
export {};