/**
 * Represents a doubly linked list.
 */
export declare class LinkedList<T> implements Iterable<T> {
    private _head?;
    private _tail?;
    private _length;
    static of<T>(...items: T[]): LinkedList<T>;
    static from<T>(iterable: Iterable<T>): LinkedList<T>;
    addFirst(value: T): LinkedListNode<T>;
    addFirstNode(node: LinkedListNode<T>): void;
    addLast(value: T): LinkedListNode<T>;
    addLastNode(node: LinkedListNode<T>): void;
    insertBefore(targetNode: LinkedListNode<T>, value: T): LinkedListNode<T>;
    insertBeforeNode(targetNode: LinkedListNode<T>, newNode: LinkedListNode<T>): void;
    insertAfter(targetNode: LinkedListNode<T>, value: T): LinkedListNode<T>;
    insertAfterNode(targetNode: LinkedListNode<T>, newNode: LinkedListNode<T>): void;
    private _checkAttachedNode;
    private _checkNewNode;
    private _insertEmpty;
    private _insertBefore;
    private _insertAfter;
    delete(value: T): boolean;
    removeNode(node: LinkedListNode<T>): void;
    removeFirst(): boolean;
    removeLast(): boolean;
    clear(): void;
    private _remove;
    get firstNode(): LinkedListNode<T> | undefined;
    get lastNode(): LinkedListNode<T> | undefined;
    get length(): number;
    find(value: T): LinkedListNode<T> | undefined;
    findLast(value: T): LinkedListNode<T> | undefined;
    includes(value: T): boolean;
    nodes(): Iterator<LinkedListNode<T>, void, unknown>;
    [Symbol.iterator](): Iterator<T, void, unknown>;
}
export declare class LinkedListNode<T> {
    value: T;
    constructor(value: T);
    get list(): LinkedList<T> | undefined;
    get prev(): LinkedListNode<T> | undefined;
    get next(): LinkedListNode<T> | undefined;
}
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