import type { ChannelStore, EventHubService } from '@pikku/core/channel';
import type { EventHubStore } from '@pikku/core/channel';
import type { Logger } from '@pikku/core/services';
import type { APIGatewayEvent } from 'aws-lambda';
export declare class LambdaEventHubService<EventTopics extends Record<string, any> = {}> implements EventHubService<EventTopics> {
    private logger;
    private channelStore;
    private eventHubStore;
    private callbackAPI;
    constructor(logger: Logger, event: APIGatewayEvent, channelStore: ChannelStore, eventHubStore: EventHubStore<EventTopics>);
    subscribe<T extends keyof EventTopics>(topic: T, channelId: string): Promise<void>;
    unsubscribe<T extends keyof EventTopics>(topic: T, channelId: string): Promise<void>;
    publish<T extends keyof EventTopics>(topic: T, channelId: string | null, data: EventTopics[T], isBinary?: boolean): Promise<void>;
    private sendMessages;
}