interface MessageTarget {
    postMessage: (message: unknown, targetOrigin: string) => void;
}
export interface DispatchWindow extends MessageTarget {
    parent: MessageTarget;
}
/**
 * Post `FUSION_SESSION_EXPIRED` to the Fusion host so it re-mints the session
 * cookie. Call from your dynamic-import / chunk-load error boundary. Targets the
 * host (ancestor) origin, falling back to `'*'` when it can't be resolved (the
 * host validates `event.origin` and the payload is a non-secret constant). No-op
 * outside an iframe or in SSR. `resolveHostOrigin` is injected for tests.
 */
export declare const dispatchSessionExpired: (win?: DispatchWindow | undefined, resolveHostOrigin?: () => string) => void;
export {};