import { AppSyncClient } from '../common_services';
import { DeviceStatusCheckFn, DbStreamConverterFn } from '../types.d';
export declare abstract class UpdateEventPublisher {
    private readonly appSyncClient$;
    readonly checkDeviceStatus: DeviceStatusCheckFn;
    constructor(appSyncClient$: AppSyncClient, checkDeviceStatus: DeviceStatusCheckFn);
    abstract prepareUpdateEventRequest(item: any, keys: any): any;
    /**
     *
     * @param stream stream of update events coming from DynamoDb
     * @param streamConverterFn Function used to convert the event records to type interfaces
     */
    publishUpdateEventToSubscribers<T>(stream: Array<any>, streamConverterFn: DbStreamConverterFn<T>): Promise<void>;
}