import { Filter } from '../types.ts';
import { RealTimeFeedBase } from './realtimefeed.ts';
export declare class BitflyerRealTimeFeed extends RealTimeFeedBase {
    protected wssURL: string;
    protected mapToSubscribeMessages(filters: Filter<string>[]): any[];
    protected messageIsError(message: any): boolean;
    protected onMessage: (msg: any) => void;
}
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