import type { Composition, Item } from '@predy-js/specification';
import { RenderLevel } from '@predy-js/specification';
/**
 * Parent | Self
 *        | B+  B   A+   A   S
 *        |--------------------
 *  B+    | B+  B   A    A   S
 *  B     | B+  B   /    /   /
 *  A+    | A+  /  A+   A   S
 *  A     | A   /   A    A   /
 *  S     | S   /   S    /   S
 * @param parentLevel
 * @param selfLevel
 */
export declare function mergeRenderLevel(parentLevel?: RenderLevel, selfLevel?: RenderLevel): RenderLevel;
export declare function expandCompositionItems(compositions: Composition[], id: string): Item[];