import { Message, Task } from './a2a.types';
export interface TaskAndHistory {
    task: Task;
    history: Message[];
}
/**
 * Simplified interface for task storage providers.
 * Stores and retrieves both the task and its full message history together.
 */
export interface TaskStore {
    /**
     * Saves a task and its associated message history.
     * Overwrites existing data if the task ID exists.
     * @param data An object containing the task and its history.
     * @returns A promise resolving when the save operation is complete.
     */
    save(data: TaskAndHistory): Promise<void>;
    /**
     * Loads a task and its history by task ID.
     * @param taskId The ID of the task to load.
     * @returns A promise resolving to an object containing the Task and its history, or null if not found.
     */
    load(taskId: string): Promise<TaskAndHistory | null>;
}
export declare class InMemoryTaskStore implements TaskStore {
    private store;
    load(taskId: string): Promise<TaskAndHistory | null>;
    save(data: TaskAndHistory): Promise<void>;
}