/**
 * Provides an inaccurate mechanism for detecting if a user held on an image long enough for it to bring up
 * the download sheet. We use a few factors to make an educated guess that this event has occured:
 *
 * 1. The user has held on the image for a long enough period of time.
 * 2. The 'touchcancel' or 'touchend' event was fired after they had passed that threshold
 * 3. The user has not moved on the image as they were holding with reasonable threshold
 */
export declare const setImagePossiblyRevealedDownloadSheetListeners: (element: HTMLImageElement, revealedCallback: () => void) => void;
export declare const removeImagePossiblyRevealedDownloadSheetListeners: (element: HTMLImageElement) => void;
export declare const addPrevent3dTouchListener: (element: HTMLElement, convertToClick?: boolean) => void;
/**
 * This is to be the inverse of what we add with Pressure.js.
 * Unfortunately, Pressure.js doesn't yet provide this feature so we
 * need to manually undo it.
 */
export declare const removePrevent3dTouchListener: (element: HTMLElement) => void;
export declare const setTapRecognizers: (element: HTMLElement, onSingleTap?: (e: Event) => void, onDoubleTap?: (e: Event) => void) => void;