import type { Root } from 'mdast';
export declare const MDX_COMPONENT_BOUNDARY_NAME = "_MdxComponentBoundary";
/**
 * Collects the names of function-valued exports declared in the MDX itself — `export function X`,
 * `export const X = () => …` / `function(){}`, and re-exported local functions (`export { X }`).
 * These are the user-authored components we treat as renderable (and, in remarkMdxRemoveUnknownJsx,
 * as "known"), as opposed to exported plain values which are not components.
 */
export declare function getExportedFunctionNames(tree: Root): Set<string>;
/**
 * Wraps each user-authored component usage in a `_MdxComponentBoundary` element so the client can
 * isolate it behind an error boundary — a single component that throws at render time then renders
 * nothing instead of crashing the whole page.
 */
export declare const remarkMdxClientComponentBoundaries: ({ allowlist }?: {
    allowlist?: string[];
}) => (tree: Root) => void;