import { BaseHelper } from '../../base/base.helper';
import { ValueOrPromise } from '../../common/types';
import { MessagePort, Transferable } from 'node:worker_threads';
import { IWorkerBus, IWorkerMessageBusHandler } from './types';
export declare abstract class AbstractWorkerMessageBusHandlerHelper<IConsumePayload> extends BaseHelper implements IWorkerMessageBusHandler<IConsumePayload> {
    onMessage: (opts: {
        message: IConsumePayload;
    }) => ValueOrPromise<void>;
    onClose: () => ValueOrPromise<void>;
    onError: (opts: {
        error: Error;
    }) => ValueOrPromise<void>;
    onExit: (opts: {
        exitCode: number | string;
    }) => ValueOrPromise<void>;
}
export declare class BaseWorkerMessageBusHandlerHelper<IConsumePayload> extends AbstractWorkerMessageBusHandlerHelper<IConsumePayload> {
    constructor(opts: {
        scope: string;
        onMessage: (opts: {
            message: IConsumePayload;
        }) => ValueOrPromise<void>;
        onClose?: () => ValueOrPromise<void>;
        onError?: (opts: {
            error: Error;
        }) => ValueOrPromise<void>;
        onExit?: (opts: {
            exitCode: number | string;
        }) => ValueOrPromise<void>;
    });
}
export declare abstract class AbstractWorkerBusHelper<IConsumePayload, IPublishPayload> extends BaseHelper implements IWorkerBus<IConsumePayload, IPublishPayload> {
    port: MessagePort;
    handler: IWorkerMessageBusHandler<IConsumePayload>;
    abstract onBeforePostMessage?(opts: {
        message: IPublishPayload;
    }): ValueOrPromise<void>;
    abstract onAfterPostMessage?(opts: {
        message: IPublishPayload;
    }): ValueOrPromise<void>;
    abstract postMessage(opts: {
        message: IPublishPayload;
        transferList: readonly Transferable[] | undefined;
    }): ValueOrPromise<void>;
}
export declare class BaseWorkerBusHelper<IConsumePayload, IPublishPayload> extends AbstractWorkerBusHelper<IConsumePayload, IPublishPayload> {
    constructor(opts: {
        scope: string;
        port: MessagePort;
        busHandler: IWorkerMessageBusHandler<IConsumePayload>;
    });
    onBeforePostMessage?(opts: {
        message: IPublishPayload;
    }): ValueOrPromise<void>;
    onAfterPostMessage?(opts: {
        message: IPublishPayload;
    }): ValueOrPromise<void>;
    postMessage(opts: {
        message: IPublishPayload;
        transferList: readonly Transferable[] | undefined;
    }): ValueOrPromise<void>;
}
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