import { Filter } from '../types';
import { RealTimeFeedBase } from './realtimefeed';
export declare class BitnomialRealTimeFeed extends RealTimeFeedBase {
    protected wssURL: string;
    protected channelMappings: {
        book: string[];
    };
    protected mapToSubscribeMessages(filters: Filter<string>[]): any[];
    protected messageIsError(message: any): boolean;
}
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