export declare const FRONTEGG_LOCATION_CHANGE: "frontegg_locationchange";
/**
 * Returns the full client-side URL (pathname + search + hash).
 * Used as the change-detection fingerprint so that URL changes
 * in any segment (path, query, hash) are captured.
 */
export declare function getCurrentUri(): string;
/**
 * Monkey-patches `history.pushState` and `history.replaceState` to dispatch
 * a {@link FRONTEGG_LOCATION_CHANGE} event so components can react to
 * programmatic navigation without polling.
 *
 * @returns `true` if the patch was applied (or was already applied),
 *          `false` if patching failed (e.g. non-writable History methods
 *          in hardened/frozen environments).
 *
 * Idempotent across multiple bundle instances — patch state is stored on
 * `window` via `Symbol.for`, so even if several copies of this module are
 * loaded (microfrontends, version mismatches, local dev) the History API
 * is only patched once.
 *
 * Limitation: if another library overwrites `history.pushState`/`replaceState`
 * AFTER this patch runs, the custom event will stop firing.
 */
export declare function patchHistoryEvents(): boolean;
/**
 * Subscribes `callback` to all location-change sources:
 *
 *  1. `popstate`                     — browser back/forward
 *  2. `hashchange`                   — hash fragment changes
 *  3. `frontegg_onRedirectTo_fired`  — Frontegg internal redirects
 *  4. `FRONTEGG_LOCATION_CHANGE`     — our patched pushState/replaceState
 *  5. Low-frequency polling fallback — only enabled when the History patch
 *     fails (non-writable / hardened environment)
 *
 * Calls `callback` once after setup to catch navigations that occurred
 * between render and listener registration.
 *
 * @returns A cleanup function that removes all listeners and timers.
 */
export declare function subscribeToLocationChanges(callback: () => void): () => void;