export declare class NamiProfileManager {
    static instance: NamiProfileManager;
    private externalId?;
    constructor();
    setExternalId(externalId: string | undefined): NamiProfileManager;
    getExternalId(): string | undefined;
    isLoggedIn(): boolean;
    private save;
    private load;
    login(externalId: string): Promise<void>;
    logout(): Promise<void>;
}