import { type IExecutionPayload } from "@twin.org/dataspace-models";
import { type IEngineCoreClone } from "@twin.org/engine-models";
/**
 * Dataspace Task Startup Method.
 * @param engineCloneData Engine clone data used to initialise a worker-thread engine instance.
 * @returns A promise that resolves when the engine has started and is ready to process tasks.
 */
export declare function appRunnerStart(engineCloneData: IEngineCoreClone): Promise<void>;
/**
 * Dataspace Task End.
 * @returns A promise that resolves when the engine has stopped and all resources are released.
 */
export declare function appRunnerEnd(): Promise<void>;
/**
 * Dataspace Task.
 * @param engineCloneData Engine clone data used to initialise a worker-thread engine instance.
 * @param payload The execution payload describing the activity and target app.
 * @returns The result produced by the app's handleActivity method.
 */
export declare function appRunner(engineCloneData: IEngineCoreClone, payload: IExecutionPayload): Promise<unknown>;