import { EngineService } from '../engine';
import { ActivityData, ActivityMetadata, ActivityType, SignalActivity } from '../../types/activity';
import { JobState } from '../../types/job';
import { Activity } from './activity';
declare class Signal extends Activity {
    config: SignalActivity;
    constructor(config: ActivityType, data: ActivityData, metadata: ActivityMetadata, hook: ActivityData | null, engine: EngineService, context?: JobState);
    process(): Promise<string>;
    mapSignalData(): Record<string, any>;
    mapResolverData(): Record<string, any>;
    /**
     * The signal activity will hook one
     */
    hookOne(): Promise<string>;
    /**
     * The signal activity will hook all paused jobs that share the same job key.
     */
    hookAll(): Promise<string[]>;
}
export { Signal };