import { UpdateChannelParams } from '@statechannels/client-api-schema';
import P from 'pino';
import { EngineConfig, MultipleChannelOutput, SingleChannelOutput } from '../types';
import { SingleThreadedEngine } from '../engine';
/**
 * A multi-threaded Nitro engine
 */
export declare class MultiThreadedEngine extends SingleThreadedEngine {
    private engineConfig;
    private workerManager;
    static create(engineConfig: EngineConfig, logger: P.Logger): Promise<MultiThreadedEngine>;
    protected constructor(engineConfig: EngineConfig, logger: P.Logger);
    updateChannel(args: UpdateChannelParams): Promise<SingleChannelOutput>;
    pushMessage(rawPayload: unknown): Promise<MultipleChannelOutput>;
    pushUpdate(rawPayload: unknown): Promise<SingleChannelOutput>;
    destroy(): Promise<void>;
    warmUpThreads(): Promise<void>;
}
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