import { BehaviorSubject } from 'rxjs/BehaviorSubject';
import { Observable } from 'rxjs/Observable';
import 'rxjs/add/operator/do';
export declare class NgaTokenService {
    protected options: any;
    protected defaultConfig: any;
    protected config: any;
    protected token$: BehaviorSubject<any>;
    constructor(options: any);
    setConfig(config: any): void;
    getConfigValue(key: string): any;
    set(token: any): Observable<any>;
    get(): Observable<any>;
    tokenChange(): Observable<any>;
    clear(): Observable<any>;
    protected publishToken(token: any): void;
}