import { HistoricalPricing } from '@refinitiv-data/types';
import { AbstractTradingSessionService } from './classes';
export declare class TradingSessionServiceImpl extends AbstractTradingSessionService implements HistoricalPricing.TimeSeries.Services.TradingSessionService {
    private stateService;
    private ricTimeZoneOffset;
    private tradingSessionSets;
    private ricTZ;
    constructor(stateService: HistoricalPricing.TimeSeries.Services.StateService);
    init(ric: string): Promise<void>;
    summarize(dateTimeGMT: Date): string | null;
    private _setTimeZoneOffset;
    private _rolloverSummarize;
    private _sessionSummarize;
    private _getTradingSessionSet;
    /**
     * +-3 day conditions i.e. trade_wed="mon" is referring to `last mon` not `next mon`
     */
    private _diff;
    private _calculateDifferenceInDays;
    private _extractRolloverTimeFromString;
}