import { Job, Runner, RunnerOptions, TaskSpec, WorkerUtils } from "graphile-worker";
import { ListenerExplorerService } from "./listener-explorer.service";
import { TaskExplorerService } from "./task-explorer.service";
export declare class WorkerService {
    private readonly options;
    private readonly listenerExplorerService;
    private readonly taskExplorerService;
    private readonly logger;
    private isMigrationDone;
    constructor(options: RunnerOptions, listenerExplorerService: ListenerExplorerService, taskExplorerService: TaskExplorerService);
    /**
     * Runs until either stopped by a signal event like `SIGINT` or by calling the `stop()` method on the resolved object.
     *
     * The resolved `Runner` object has a number of helpers on it, see [Runner object](https://github.com/graphile/worker#runner-object) for more information.
     */
    run(): Promise<Runner>;
    /**
     * Runs until there are no runnable jobs left, and then resolve.
     */
    runOnce(): Promise<void>;
    getWorkerUtils(): Promise<WorkerUtils>;
    addJob(identifier: string, payload?: unknown, spec?: TaskSpec): Promise<Job>;
    addJobs(jobs: Array<{
        identifier: string;
        payload?: unknown;
        spec?: TaskSpec;
    }>): Promise<Job[]>;
    private runMigrations;
    private hookEvents;
}