export interface StoredCredentials {
    baseUrl: string;
    clientId: string;
    clientSecret?: string;
    registrationAccessToken?: string;
    registrationClientUri?: string;
    accessToken?: string;
    refreshToken?: string;
    tokenType?: string;
    scope?: string;
    expiresAt?: number;
}
export interface TokenResponse {
    access_token: string;
    token_type: string;
    expires_in?: number;
    refresh_token?: string;
    scope?: string;
    id_token?: string;
}
export declare function defaultCredentialsPath(): string;
export declare function loadCredentials(path: string): Promise<StoredCredentials | null>;
export declare function saveCredentials(path: string, creds: StoredCredentials): Promise<void>;
export declare function applyTokenResponse(base: StoredCredentials, token: TokenResponse, now?: number): StoredCredentials;
export declare function isTokenExpired(creds: StoredCredentials, now?: number): boolean;