/**
 * 下单服务的service
 */
import { BehaviorSubject } from "rxjs";
import { MarginTypeEnum, TradeUnitEnum } from "../../../../../exchangeShared/types";
export declare class PlaceOrderService {
    static _instance: PlaceOrderService;
    constructor();
    static get instance(): PlaceOrderService;
    preference$: BehaviorSubject<boolean>;
    tradeUnit$: BehaviorSubject<TradeUnitEnum>;
    marginType$: BehaviorSubject<MarginTypeEnum>;
    leverage$: BehaviorSubject<number>;
    updatePreference(val: boolean): void;
    updateTradeUnit(val: TradeUnitEnum): void;
    updateLeverage(lev: any): void;
}