/**
 * Represents a node in a linked list.
 * @template T The type of value stored in the node.
 */
export declare class Node<T> {
    value: T;
    next: Node<T> | null;
    /**
     * Creates a new node.
     * @param {T} value - The value to be stored in the node.
     */
    constructor(value: T);
}
/**
 * Represents a singly linked list.
 * @template T The type of elements in the linked list.
 * @example
 * const list = new LinkedList<number>();
 * list.append(1).append(2);
 * console.log(list.toArray()); // [1, 2]
 */
export declare class LinkedList<T> {
    head: Node<T> | null;
    /**
     * Appends a value to the end of the linked list.
     * @param {T} value - The value to append.
     * @returns {LinkedList<T>} The linked list instance for chaining.
     */
    append(value: T): this;
    /**
     * Checks if the linked list contains a specific value.
     * @param {T} value - The value to check for.
     * @returns {boolean} True if the value is in the linked list, false otherwise.
     */
    contains(value: T): boolean;
    /**
     * Removes a value from the linked list.
     * @param {T} value - The value to remove.
     * @returns {boolean} True if the value was removed, false otherwise.
     */
    remove(value: T): boolean;
    /**
     * Inserts a value at a specific index in the linked list.
     * @param {T} value - The value to insert.
     * @param {number} index - The index at which to insert the value.
     * @returns {LinkedList<T>} The linked list instance for chaining.
     */
    insertAt(value: T, index: number): this;
    /**
     * Serializes the linked list to a JSON string.
     * @returns {string} The serialized linked list.
     */
    serialize(): string;
    /**
     * Deserializes a JSON string to populate the linked list.
     * @param {string} data - The JSON string to deserialize.
     */
    deserialize(data: string): void;
    /**
     * Searches for a value in the linked list and returns its index.
     * @param {T} value - The value to search for.
     * @returns {number} The index of the value, or -1 if not found.
     */
    search(value: T): number;
}