interface TokenResponse {
    access_token: string;
    refresh_token: string;
    [key: string]: any;
}
export interface AuthParams {
    app_id: string;
    app_secret: string;
    user_token?: string;
    refresh_token?: string;
}
export declare function getAuthorizationCode(app_id: string, redirectUri: string, timeoutMs?: number): Promise<string>;
export declare function refreshAccessToken(refreshToken: string): Promise<TokenResponse>;
export declare function getAccessToken({ app_id, app_secret, user_token, refresh_token }: AuthParams, redirectUri: string): Promise<TokenResponse>;
export {};