import { Flashcard, HumanReadableDueDate } from "../types.js";
export default class Card implements Flashcard {
    interval: number;
    repetition: number;
    easeFactor: number;
    minEaseFactor: number;
    dueDate: number;
    learningAlgorithm: any;
    [key: string]: any;
    /**
     * Creates an instance of Card.
     * @param {Flashcard} card - The flashcard data.
     * @param {object} config - Configuration object for the card.
     */
    constructor(card: Flashcard, config: object);
    /**
     * Updates the difficulty of the card.
     * @param {number} difficulty - The difficulty rating.
     */
    updateDifficulty(difficulty: number): void;
    /**
     * Marks the card as "again".
     */
    again(): void;
    /**
     * Marks the card as "hard".
     */
    hard(): void;
    /**
     * Marks the card as "good".
     */
    good(): void;
    /**
     * Marks the card as "easy".
     */
    easy(): void;
    getPotentialDueDate(difficulty: number): number;
    getPotentialDueDates(difficulties: number[]): number[];
    getPotentialDueDatesHumanReadable(difficulties: number[]): HumanReadableDueDate[];
}