/**
 * A picture, full screen, on a scrim — the thing a thumbnail opens into.
 *
 * Both apps had written this by hand and neither had got it right: Peek's
 * `ImageLightbox` and the `FrameLightbox` before it were `createPortal` plus a
 * fixed `<div>`, with no Escape, no focus trap and nothing to return focus to
 * (Peek scan F5, P4; migration B22, Katerina 10 September). Ship never had one
 * at all, so a screenshot in an issue could not be looked at.
 *
 * On Base UI's `Dialog`, like `DialogShell`: the portal, the backdrop, Escape,
 * the outside press and the focus trap are its, and what is written here is the
 * picture, the scrim and the close button.
 *
 * **The close button is this component's own**, not an `IconButton`: a 26px
 * square with no fill is hard to find on top of a photograph, which is why Peek
 * had written an escape note beside its own. A 32px round button on an elevated
 * fill with a hairline reads on any picture.
 */
export interface LightboxProps {
    /** The picture to show. Swapping it — a thumbnail for the original, once it
     *  arrives — swaps what is on screen, with no flash of nothing. */
    src: string;
    /** What the picture is. Names the viewer for assistive tech too. */
    alt: string;
    onClose: () => void;
    /** Extra classes on the picture itself. */
    className?: string;
}
export declare function Lightbox({ src, alt, onClose, className }: LightboxProps): import("react").JSX.Element;
//# sourceMappingURL=Lightbox.d.ts.map