export interface ContentBounds {
    width: number;
    height: number;
}
type ContentBoundsMeasurement = (element: Element) => ContentBounds;
/**
 * Measures the actual rendered bounds of a catalog root. Scroll metrics cover
 * tables and forms that overflow their wrapper; the descendant union covers
 * positioned content that is not represented by the wrapper's scroll box.
 */
export declare function measureContentBounds(element: Element): ContentBounds;
/**
 * Measures the authored content root itself instead of its overflow box.
 *
 * `data-pygmalion-content-bounds` is an explicit frame boundary. Its layout
 * border box already grows with normal-flow and max-content children, while
 * scroll metrics can be polluted by editor-only layers after DOM promotion.
 * Prefer untransformed layout metrics so canvas zoom never changes the model
 * frame size.
 */
export declare function measureContentBorderBounds(element: Element): ContentBounds;
/**
 * Reports stable rendered bounds after layout, font loading, resize, and DOM
 * mutation. Updates are coalesced through two animation frames so a font or
 * component layout commit cannot publish an intermediate frame size.
 */
export declare function observeContentBounds(element: Element, onBoundsChange: (bounds: ContentBounds) => void, measure?: ContentBoundsMeasurement): () => void;
/**
 * Follows the measurable catalog root inside a render host. Catalog components
 * may mount or be replaced after the frame effect runs, so observing only the
 * first query result can leave a persisted seed size in place indefinitely.
 */
export declare function observeContentBoundsTarget(container: Element, selector: string, onBoundsChange: (bounds: ContentBounds) => void, measure?: ContentBoundsMeasurement): () => void;
export {};