import { Application } from './types/Application';
import { LDClient, LDOptions } from 'launchdarkly-js-client-sdk';
import { UserAccount } from './types/UserAccount';
export declare class FeatureToggleClientService {
    private static instance;
    private userInstance;
    private applicationInstance;
    private requestTimeout;
    private constructor();
    getUserInstance(): LDClient;
    getApplicationInstance(): LDClient;
    setRequestTimeouts(timeout: number): void;
    static getInstance(): FeatureToggleClientService;
    initializeUser(payload: UserAccount, ldclientSdkKey: string, options?: LDOptions): void;
    initializeApplication(payload: Application, ldclientSdkKey: string, options?: LDOptions): void;
    private solveRequestWithTimeout;
    isFeatureEnabled(featureKey: string, defaultValue?: boolean): Promise<any>;
    isUserFeatureEnabled(featureKey: string, defaultValue?: boolean): Promise<any>;
    isApplicationFeatureEnabled(featureKey: string, defaultValue?: boolean): Promise<any>;
}