export interface Session {
    token: string;
    accountId: string;
    countryCode?: string | null;
    region: string;
    apiBaseUrl: string;
    authFlowUsed?: 'legacy' | 'new';
    /**
     * Identifies this installation to VeSync. Issued tokens are bound to it (the JWT payload carries a
     * `terminalId` claim), so it must stay stable across logins and restarts — a fresh id makes every login
     * look like a brand-new device to VeSync.
     */
    terminalId?: string;
    /** Client app id, kept alongside `terminalId` so the client identity is stable too. */
    appId?: string;
    issuedAt?: number | null;
    expiresAt?: number | null;
    lastValidatedAt?: number | null;
    libraryVersion?: string;
}
export interface SessionStore {
    load(): Promise<Session | null>;
    save(session: Session): Promise<void>;
    clear(): Promise<void>;
}
/**
 * Decode a JWT token payload to extract iat/exp without verifying the signature.
 */
export declare function decodeJwtTimestamps(token: string): {
    iat?: number;
    exp?: number;
} | null;