/**
 * Filters registered block settings, extending attributes to include `layout`.
 */
export declare function addAttribute(): void;
/**
 * Override the default edit UI to include layout controls
 *
 * @param {Function} BlockEdit Original component.
 *
 * @return {Function} Wrapped component.
 */
export declare const withLayoutControls: (Inner: import("react").ComponentType<any>) => (props: any) => import("react/jsx-runtime").JSX.Element[];
/**
 * Override the default block element to add the layout classes.
 *
 * @param {Function} BlockListBlock Original component.
 *
 * @return {Function} Wrapped component.
 */
export declare const withLayoutStyles: (Inner: import("react").ComponentType<any>) => (props: any) => import("react/jsx-runtime").JSX.Element;
export declare function initializeLayout(): void;