import { ITasksApi } from '../api/ITasksApi';
import { TaskRunner } from '../libs/tasks/TaskRunner';
import { TaskRun } from '../libs/tasks/TaskRun';
import { Cache } from '../libs/cache/Cache';
import { StorageRef } from '../libs/storage/StorageRef';
export declare class TasksStorageExtension implements ITasksApi {
    cache: Cache;
    storageRef: StorageRef;
    onBefore(runner: TaskRunner): void;
    onStart(run: TaskRun): void;
    onProgress(run: TaskRun): void;
    onStop(run: TaskRun): void;
    onAfter(runner: TaskRunner): void;
    onError(runner: TaskRun | TaskRunner): void;
    _onTaskRun(runner: TaskRun | TaskRunner): Promise<void>;
}