import { FExecutionContext, FInitableBase } from '@freemework/common';
import { WorkflowDataCacheFacade } from './WorkflowDataCacheFacade.js';
export declare class WorkflowRunner extends FInitableBase {
    private static _instance;
    private readonly _log;
    private readonly _tags;
    private readonly _workflowDataCacheFacade;
    private _sqlSyncTickCounter;
    private _nextWorkerTickTimeout;
    private _nextWorkerTickSleep;
    private _currentJob;
    static getInstance(): WorkflowRunner;
    constructor(workflowDataCacheFacade: WorkflowDataCacheFacade, workerTags: ReadonlyArray<string>);
    get tags(): ReadonlyArray<string>;
    resumeBreakpoint(executionContext: FExecutionContext, workflowUuid: string, breakpointOid: string): Promise<void>;
    protected onInit(): void;
    protected onDispose(): Promise<void>;
    private safeBackgroundWorkerScheduler;
    private backgroundWorker;
}