fix: expose MarkdownHeading type from astro

examples/docs/src/components/RightSidebar/TableOfContents.tsx

@@ -1,11 +1,11 @@
 import type { FunctionalComponent } from 'preact';
 import { h, Fragment } from 'preact';
 import { useState, useEffect, useRef } from 'preact/hooks';
+import { MarkdownHeading } from 'astro';
 
-const TableOfContents: FunctionalComponent<{ headings: any[] }> = ({ headings = [] }) => {
+const TableOfContents: FunctionalComponent<{ headings: MarkdownHeading[] }> = ({ headings = [] }) => {
 	const itemOffsets = useRef([]);
 	const [activeId, setActiveId] = useState<string>(undefined);
-
 	useEffect(() => {
 		const getItemOffsets = () => {
 			const titles = document.querySelectorAll('article :is(h1, h2, h3, h4)');

packages/astro/src/@types/astro.ts

@@ -16,6 +16,14 @@ import type { AstroConfigSchema } from '../core/config';
 import type { ViteConfigWithSSR } from '../core/create-vite';
 import type { AstroComponentFactory, Metadata } from '../runtime/server';
 export type { SSRManifest } from '../core/app/types';
+export type {
+	MarkdownHeading,
+	MarkdownMetadata,
+	MarkdownRenderingResult,
+	RehypePlugins,
+	RemarkPlugins,
+	ShikiConfig,
+} from '@astrojs/markdown-remark';
 
 export interface AstroBuiltinProps {
 	'client:load'?: boolean;