declare function hasDOM(): boolean;
export interface BoundedModal {
    root: HTMLElement;
    overlay: HTMLElement;
    panel: HTMLElement;
    content: HTMLElement;
    iframe: HTMLIFrameElement | null;
    iframeOrigin: string;
    iframeReady: boolean;
    onBackdrop: (() => void) | null;
    onIframeMessage: ((d: Record<string, unknown>) => void) | null;
    chain: Promise<unknown>;
    fitObserver: ResizeObserver | null;
    generation: number;
    onSupersede: (() => void) | null;
}
export declare function getModal(): BoundedModal;
export declare function modalIsMounted(): boolean;
export declare function showModal(m: BoundedModal): void;
export declare function hideModal(m: BoundedModal, after?: () => void): void;
export declare function setPanelHeight(m: BoundedModal, px: number): void;
/**
 * Measure the currently mounted native content and tween the panel to fit it.
 * Re-fits automatically when the card's intrinsic height changes - notably after
 * the Newsreader/Schibsted web fonts swap in (which grows line boxes a few px
 * after first paint) and on inline view swaps (email -> OTP code -> success).
 */
export declare function fitPanelToContent(m: BoundedModal): void;
/** Switch the modal into NATIVE-content mode: detach any iframe, mount `node`. */
export declare function mountContent(m: BoundedModal, node: HTMLElement): void;
/** Get (or lazily create) the warm iframe for signer/hosted-page mode. */
export declare function ensureIframe(m: BoundedModal, url: string, origin: string): HTMLIFrameElement;
/**
 * Destroy the warm signer iframe if one is currently mounted for `origin`, and report
 * whether there was one. Logout needs this: a signing session can live in that document's
 * MEMORY (the signer keeps an in-memory mirror when the browser blocks its storage), and a
 * throwaway iframe opened by the sweep can only ever clear the shared store, never another
 * document's memory. Removing the iframe discards its browsing context, which takes the
 * mirror with it.
 *
 * Deliberately does NOT call getModal(): that would BUILD a modal just to tear it down, on
 * every logout of every app, most of which never mounted one.
 */
export declare function detachWarmSignerIframe(origin: string): boolean;
export declare function detachIframe(m: BoundedModal): void;
export declare function ensureFonts(): void;
export { hasDOM };