import { BaseError } from 'make-error';
import { type ReadStoredData } from './storage';
/**
 * Base error class for storage-related issues.
 */
export declare class StoredDataError extends BaseError {
    /**
     * Creates an instance of StoredDataError.
     *
     * @param message Optional error message.
     */
    constructor(message?: string);
}
/**
 * Error thrown when requested data does not exist in storage.
 */
export declare class DataDoesNotExistError extends StoredDataError {
    /**
     * Creates an instance of DataDoesNotExistError.
     *
     * @param message Optional error message.
     */
    constructor(message?: string);
}
/**
 * Error thrown when data exists in storage but is considered expired.
 *
 * @template T The type of the data that is expired.
 */
export declare class DataIsExpiredError<T> extends StoredDataError {
    readonly data: ReadStoredData<T>;
    /**
     * Creates an instance of DataIsExpiredError.
     *
     * @param data The expired data, including metadata.
     * @param message Optional error message. If not provided, a default message will be used.
     */
    constructor(data: ReadStoredData<T>, message?: string);
}