/// <reference types="node" />
import { EventEmitter } from 'events';
import { InternalTaskContext } from './InternalTaskContext';
import { Database } from '@journeyapps/db';
export declare class TaskContext extends EventEmitter {
    private context;
    readonly appId: string;
    readonly env: string;
    readonly name: string;
    readonly traceId: string;
    readonly source: string;
    constructor(context: InternalTaskContext);
    get userId(): string;
    get backend(): import("./TaskContextBackend").TaskContextBackend;
    /** @internal */
    get DB(): Database;
    toJSON(): {
        appId: string;
        env: string;
        name: string;
        traceId: string;
        source: string;
        backend: import("./TaskContextBackend").TaskContextBackend;
        userId: string;
        DB: string;
    };
}