import { InternalPanel } from '../types/internal-panels';
/**
 * Flex direction of DOM elements inside the panel.
 */
export declare function panelFlexDirection(panel: InternalPanel): string;
/**
 * The CSS height of the panel.
 */
export declare const panelHeight: (panel: InternalPanel) => string | null;
/**
 * The CSS width of the panel.
 */
export declare const panelWidth: (panel: InternalPanel) => string | null;
/**
 * The horizontal alignment of the panel.
 */
export declare const isHorizontal: (panel: InternalPanel) => boolean;
/**
 * The vertical alignment of the panel.
 */
export declare const isVertical: (panel: InternalPanel) => boolean;