export declare function resolveMountTarget(selector?: string): HTMLElement | null;
export declare function getPopupMountParent(mountTarget?: string): HTMLElement;
export declare function getPopupWidgetRoot(widgetKey: string): HTMLElement | null;
/** True when the popup trigger and/or iframe container exists in the expected mount location. */
export declare function isPopupWidgetInMountTarget(widgetKey: string, mountTarget?: string): boolean;
/** Moves popup DOM into the configured mount target when it was appended elsewhere (e.g. Turbo swaps). */
export declare function relocatePopupWidgetIfNeeded(widgetKey: string, mountTarget?: string): boolean;
export declare function appendPopupWidgetFragment(fragment: DocumentFragment, mountTarget?: string): void;