import * as runner_pb from '../proto/runner_pb';
import { Task } from './api';
export declare const rootTaskName = "@insta/root";
export declare const rootTaskId = "@insta/root";
export declare function hashTaskId(value: string): string;
export declare function discoverRecursively(task: Task<void, void>, taskRequest: runner_pb.RegisterTaskRequest): Promise<void>;
export declare const rootTask: Task<void, void>;
/**
 * Returns the ids of the root tasks children.
 */
export declare function getRootTaskChildrenIds(): any[];
export declare function setTaskContext(newContext: Task<void, void>): void;
export declare function getTaskContext(): Task<void, void>;
export declare function getActiveTasks(): Set<Task<void, void>>;
declare type TaskImpersonation = {
    id: string;
    executionId: string;
};
/**
 * Executes a function as if it was executed under the task specified in `task`.
 *
 * @param fn The function to execute.
 * @param task The task impersonation.
 */
export declare function impersonateTask(fn: () => Promise<any>, task: TaskImpersonation): Promise<void>;
export {};