import { HatClient, HatClientConfig } from './index';
export declare class State {
    apiVersion: string;
    hatDomain: string;
    token: string;
    secure: boolean;
    authenticated: boolean;
    onTokenChange?: (token: string) => void;
    observers: Array<HatClient>;
    constructor(state: HatClientConfig);
    setToken(token: string): void;
    signOut(): void;
    addObserver(o: HatClient): void;
    notifyObservers(): void;
    private validateConfig;
}