import type { SessionTokenSet } from "@inrupt/solid-client-authn-core";
/**
 * Refresh the Access Token and ID Token using the Refresh Token.
 * The tokens may not be expired in order to be refreshed.
 *
 * @param tokenSet the tokens to refresh
 * @returns a new set of tokens
 * @since 2.4.0
 * @example
 * ```
 * const refreshedTokens = await refreshTokens(previousTokenSet);
 * const session = await Session.fromTokens(refreshedTokens, sessionId);
 * ```
 */
export declare function refreshTokens(tokenSet: SessionTokenSet): Promise<SessionTokenSet>;
/**
 * Performs an RP-initiated logout at the OpenID Provider associated to a user session using the provided token set.
 * After this has completed, the user will be logged out of their OpenID Provider. This terminates their current browsing
 * session on any active Solid application.
 *
 * @param tokenSet The set of tokens associated to the session being logged out. This must contain a valid ID token.
 * @param redirectHandler Function to redirect the user to the logout URL
 * @param postLogoutUrl An optional URL to be redirected to by the OpenID Provider after logout has been completed
 * @returns A Promise that resolves once the logout process is initiated
 * @since unreleased
 * @example
 * ```typescript
 * // Express.js logout endpoint
 * app.get("/logout", async (req, res) => {
 *   const tokenSet = ...;
 *   await logout(
 *     tokenSet,
 *     // Provide an express.js-specific redirect handler
 *     (url) => {
 *       res.redirect(url);
 *     }
 *   );
 * });
 * ```
 */
export declare function logout(tokenSet: SessionTokenSet, redirectHandler: (url: string) => void, postLogoutUrl?: string): Promise<void>;