import { ProjectPluginStructure, UIDLElement, UIDLNode } from '@teleporthq/teleport-types';
/**
 * Traverses a UIDL node tree and calls `fn` for every UIDLElement found.
 * Handles element nodes, conditionals, repeats, slots, CMS nodes, and
 * data-source nodes.
 */
export declare const traverseElements: (node: UIDLNode, fn: (element: UIDLElement) => void) => void;
/**
 * Scans all pages and components in the project UIDL and calls `fn` for
 * every UIDLElement found anywhere in the project.
 */
export declare const traverseProjectElements: (uidl: ProjectPluginStructure['uidl'], fn: (element: UIDLElement) => void) => void;
/**
 * Returns true when any element in the project UIDL has one of the given
 * element/semantic types. Used by project plugins to detect primitive usage.
 */
export declare const projectUsesElementTypes: (uidl: ProjectPluginStructure['uidl'], elementTypes: Set<string>) => boolean;
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