Revert "revert: markdoc asset bleed (#7178)"

This reverts commit 57e65d247f.

.changeset/tiny-phones-reply.md

@@ -1,7 +0,0 @@
----
-'@astrojs/markdoc': patch
-'@astrojs/mdx': patch
-'astro': patch
----
-
-Fix: revert Markdoc asset bleed changes. Production build issues were discovered that deserve a different fix.

examples/with-markdoc/src/content/config.ts

@@ -1,9 +0,0 @@
-import { defineCollection, z } from 'astro:content';
-
-const docs = defineCollection({
-	schema: z.object({
-		title: z.string(),
-	}),
-});
-
-export const collections = { docs };

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

@@ -1275,6 +1275,12 @@ export interface ContentEntryType {
 		}
 	): rollup.LoadResult | Promise<rollup.LoadResult>;
 	contentModuleTypes?: string;
+	/**
+	 * Handle asset propagation for rendered content to avoid bleed.
+	 * Ex. MDX content can import styles and scripts, so `handlePropagation` should be true.
+	 * @default true
+	 */
+	handlePropagation?: boolean;
 }
 
 type GetContentEntryInfoReturnType = {

packages/astro/src/content/consts.ts

@@ -1,11 +1,18 @@
 export const PROPAGATED_ASSET_FLAG = 'astroPropagatedAssets';
+export const CONTENT_RENDER_FLAG = 'astroRenderContent';
 export const CONTENT_FLAG = 'astroContentCollectionEntry';
 export const DATA_FLAG = 'astroDataCollectionEntry';
-export const CONTENT_FLAGS = [CONTENT_FLAG, DATA_FLAG, PROPAGATED_ASSET_FLAG] as const;
 
 export const VIRTUAL_MODULE_ID = 'astro:content';
 export const LINKS_PLACEHOLDER = '@@ASTRO-LINKS@@';
 export const STYLES_PLACEHOLDER = '@@ASTRO-STYLES@@';
 export const SCRIPTS_PLACEHOLDER = '@@ASTRO-SCRIPTS@@';
 
+export const CONTENT_FLAGS = [
+	CONTENT_FLAG,
+	CONTENT_RENDER_FLAG,
+	DATA_FLAG,
+	PROPAGATED_ASSET_FLAG,
+] as const;
+
 export const CONTENT_TYPES_FILE = 'types.d.ts';

packages/astro/src/content/runtime.ts

@@ -270,62 +270,82 @@ async function render({
 	const baseMod = await renderEntryImport();
 	if (baseMod == null || typeof baseMod !== 'object') throw UnexpectedRenderError;
 
-	const { collectedStyles, collectedLinks, collectedScripts, getMod } = baseMod;
-	if (typeof getMod !== 'function') throw UnexpectedRenderError;
-	const mod = await getMod();
-	if (mod == null || typeof mod !== 'object') throw UnexpectedRenderError;
+	if (
+		baseMod.default != null &&
+		typeof baseMod.default === 'object' &&
+		baseMod.default.__astroPropagation === true
+	) {
+		const { collectedStyles, collectedLinks, collectedScripts, getMod } = baseMod.default;
+		if (typeof getMod !== 'function') throw UnexpectedRenderError;
+		const propagationMod = await getMod();
+		if (propagationMod == null || typeof propagationMod !== 'object') throw UnexpectedRenderError;
 
-	const Content = createComponent({
-		factory(result, baseProps, slots) {
-			let styles = '',
-				links = '',
-				scripts = '';
-			if (Array.isArray(collectedStyles)) {
-				styles = collectedStyles
-					.map((style: any) => {
-						return renderUniqueStylesheet(result, {
-							type: 'inline',
-							content: style,
-						});
-					})
-					.join('');
-			}
-			if (Array.isArray(collectedLinks)) {
-				links = collectedLinks
-					.map((link: any) => {
-						return renderUniqueStylesheet(result, {
-							type: 'external',
-							src: prependForwardSlash(link),
-						});
-					})
-					.join('');
-			}
-			if (Array.isArray(collectedScripts)) {
-				scripts = collectedScripts.map((script: any) => renderScriptElement(script)).join('');
-			}
+		const Content = createComponent({
+			factory(result, baseProps, slots) {
+				let styles = '',
+					links = '',
+					scripts = '';
+				if (Array.isArray(collectedStyles)) {
+					styles = collectedStyles
+						.map((style: any) => {
+							return renderUniqueStylesheet(result, {
+								type: 'inline',
+								content: style,
+							});
+						})
+						.join('');
+				}
+				if (Array.isArray(collectedLinks)) {
+					links = collectedLinks
+						.map((link: any) => {
+							return renderUniqueStylesheet(result, {
+								type: 'external',
+								src: prependForwardSlash(link),
+							});
+						})
+						.join('');
+				}
+				if (Array.isArray(collectedScripts)) {
+					scripts = collectedScripts.map((script: any) => renderScriptElement(script)).join('');
+				}
 
-			let props = baseProps;
-			// Auto-apply MDX components export
-			if (id.endsWith('mdx')) {
-				props = {
-					components: mod.components ?? {},
-					...baseProps,
-				};
-			}
+				let props = baseProps;
+				// Auto-apply MDX components export
+				if (id.endsWith('mdx')) {
+					props = {
+						components: propagationMod.components ?? {},
+						...baseProps,
+					};
+				}
 
-			return createHeadAndContent(
-				unescapeHTML(styles + links + scripts) as any,
-				renderTemplate`${renderComponent(result, 'Content', mod.Content, props, slots)}`
-			);
-		},
-		propagation: 'self',
-	});
+				return createHeadAndContent(
+					unescapeHTML(styles + links + scripts) as any,
+					renderTemplate`${renderComponent(
+						result,
+						'Content',
+						propagationMod.Content,
+						props,
+						slots
+					)}`
+				);
+			},
+			propagation: 'self',
+		});
 
-	return {
-		Content,
-		headings: mod.getHeadings?.() ?? [],
-		remarkPluginFrontmatter: mod.frontmatter ?? {},
-	};
+		return {
+			Content,
+			headings: propagationMod.getHeadings?.() ?? [],
+			remarkPluginFrontmatter: propagationMod.frontmatter ?? {},
+		};
+	} else if (baseMod.Content && typeof baseMod.Content === 'function') {
+		return {
+			Content: baseMod.Content,
+			headings: baseMod.getHeadings?.() ?? [],
+			remarkPluginFrontmatter: baseMod.frontmatter ?? {},
+		};
+	} else {
+		throw UnexpectedRenderError;
+	}
 }
 
 export function createReference({ lookupMap }: { lookupMap: ContentLookupMap }) {

packages/astro/src/content/template/virtual-mod.mjs

@@ -46,7 +46,7 @@ function createGlobLookup(glob) {
 }
 
 const renderEntryGlob = import.meta.glob('@@RENDER_ENTRY_GLOB_PATH@@', {
-	query: { astroPropagatedAssets: true },
+	query: { astroRenderContent: true },
 });
 const collectionToRenderEntryMap = createCollectionToGlobResultMap({
 	globResult: renderEntryGlob,

packages/astro/src/content/utils.ts

@@ -14,6 +14,7 @@ import type {
 } from '../@types/astro.js';
 import { VALID_INPUT_FORMATS } from '../assets/consts.js';
 import { AstroError, AstroErrorData } from '../core/errors/index.js';
+
 import { formatYAMLException, isYAMLException } from '../core/errors/utils.js';
 import { CONTENT_FLAGS, CONTENT_TYPES_FILE } from './consts.js';
 import { errorMap } from './error-map.js';
@@ -328,7 +329,7 @@ export function parseFrontmatter(fileContents: string, filePath: string) {
  */
 export const globalContentConfigObserver = contentObservable({ status: 'init' });
 
-export function hasContentFlag(viteId: string, flag: (typeof CONTENT_FLAGS)[number]) {
+export function hasContentFlag(viteId: string, flag: (typeof CONTENT_FLAGS)[number]): boolean {
 	const flags = new URLSearchParams(viteId.split('?')[1] ?? '');
 	return flags.has(flag);
 }

packages/astro/src/content/vite-plugin-content-assets.ts

@@ -1,4 +1,5 @@
-import { pathToFileURL } from 'url';
+import { extname } from 'node:path';
+import { pathToFileURL } from 'node:url';
 import type { Plugin } from 'vite';
 import type { AstroSettings } from '../@types/astro.js';
 import { moduleIsTopLevelPage, walkParentInfos } from '../core/build/graph.js';
@@ -11,16 +12,13 @@ import { joinPaths, prependForwardSlash } from '../core/path.js';
 import { getStylesForURL } from '../core/render/dev/css.js';
 import { getScriptsForURL } from '../core/render/dev/scripts.js';
 import {
+	CONTENT_RENDER_FLAG,
 	LINKS_PLACEHOLDER,
 	PROPAGATED_ASSET_FLAG,
 	SCRIPTS_PLACEHOLDER,
 	STYLES_PLACEHOLDER,
 } from './consts.js';
-
-function isPropagatedAsset(viteId: string) {
-	const flags = new URLSearchParams(viteId.split('?')[1]);
-	return flags.has(PROPAGATED_ASSET_FLAG);
-}
+import { hasContentFlag } from './utils.js';
 
 export function astroContentAssetPropagationPlugin({
 	mode,
@@ -32,13 +30,31 @@ export function astroContentAssetPropagationPlugin({
 	let devModuleLoader: ModuleLoader;
 	return {
 		name: 'astro:content-asset-propagation',
+		enforce: 'pre',
+		async resolveId(id, importer, opts) {
+			if (hasContentFlag(id, CONTENT_RENDER_FLAG)) {
+				const base = id.split('?')[0];
+
+				for (const { extensions, handlePropagation = true } of settings.contentEntryTypes) {
+					if (handlePropagation && extensions.includes(extname(base))) {
+						return this.resolve(`${base}?${PROPAGATED_ASSET_FLAG}`, importer, {
+							skipSelf: true,
+							...opts,
+						});
+					}
+				}
+				// Resolve to the base id (no content flags)
+				// if Astro doesn't need to handle propagation.
+				return this.resolve(base, importer, { skipSelf: true, ...opts });
+			}
+		},
 		configureServer(server) {
 			if (mode === 'dev') {
 				devModuleLoader = createViteLoader(server);
 			}
 		},
 		async transform(_, id, options) {
-			if (isPropagatedAsset(id)) {
+			if (hasContentFlag(id, PROPAGATED_ASSET_FLAG)) {
 				const basePath = id.split('?')[0];
 				let stringifiedLinks: string, stringifiedStyles: string, stringifiedScripts: string;
 
@@ -73,14 +89,17 @@ export function astroContentAssetPropagationPlugin({
 				}
 
 				const code = `
-					export async function getMod() {
+					async function getMod() {
 						return import(${JSON.stringify(basePath)});
 					}
-					export const collectedLinks = ${stringifiedLinks};
-					export const collectedStyles = ${stringifiedStyles};
-					export const collectedScripts = ${stringifiedScripts};
+					const collectedLinks = ${stringifiedLinks};
+					const collectedStyles = ${stringifiedStyles};
+					const collectedScripts = ${stringifiedScripts};
+					const defaultMod = { __astroPropagation: true, getMod, collectedLinks, collectedStyles, collectedScripts };
+					export default defaultMod;
 				`;
-
+				// ^ Use a default export for tools like Markdoc
+				// to catch the `__astroPropagation` identifier
 				return { code, map: { mappings: '' } };
 			}
 		},

packages/astro/src/core/render/dev/vite.ts

@@ -1,7 +1,6 @@
 import type { ModuleLoader, ModuleNode } from '../../module-loader/index';
 
 import npath from 'path';
-import { PROPAGATED_ASSET_FLAG } from '../../../content/consts.js';
 import { SUPPORTED_MARKDOWN_FILE_EXTENSIONS } from '../../constants.js';
 import { unwrapId } from '../../util.js';
 import { isCSSRequest } from './util.js';
@@ -10,9 +9,10 @@ import { isCSSRequest } from './util.js';
  * List of file extensions signalling we can (and should) SSR ahead-of-time
  * See usage below
  */
-const fileExtensionsToSSR = new Set(['.astro', ...SUPPORTED_MARKDOWN_FILE_EXTENSIONS]);
+const fileExtensionsToSSR = new Set(['.astro', '.mdoc', ...SUPPORTED_MARKDOWN_FILE_EXTENSIONS]);
 
 const STRIP_QUERY_PARAMS_REGEX = /\?.*$/;
+const ASTRO_PROPAGATED_ASSET_REGEX = /\?astroPropagatedAssets/;
 
 /** recursively crawl the module graph to get all style files imported by parent id */
 export async function* crawlGraph(
@@ -23,7 +23,6 @@ export async function* crawlGraph(
 ): AsyncGenerator<ModuleNode, void, unknown> {
 	const id = unwrapId(_id);
 	const importedModules = new Set<ModuleNode>();
-	if (new URL(id, 'file://').searchParams.has(PROPAGATED_ASSET_FLAG)) return;
 
 	const moduleEntriesForId = isRootFile
 		? // "getModulesByFile" pulls from a delayed module cache (fun implementation detail),
@@ -44,6 +43,7 @@ export async function* crawlGraph(
 		if (id === entry.id) {
 			scanned.add(id);
 			const entryIsStyle = isCSSRequest(id);
+
 			for (const importedModule of entry.importedModules) {
 				// some dynamically imported modules are *not* server rendered in time
 				// to only SSR modules that we can safely transform, we check against
@@ -60,15 +60,13 @@ export async function* crawlGraph(
 					if (entryIsStyle && !isCSSRequest(importedModulePathname)) {
 						continue;
 					}
+					const isFileTypeNeedingSSR = fileExtensionsToSSR.has(
+						npath.extname(importedModulePathname)
+					);
 					if (
-						fileExtensionsToSSR.has(
-							npath.extname(
-								// Use `id` instead of `pathname` to preserve query params.
-								// Should not SSR a module with an unexpected query param,
-								// like "?astroPropagatedAssets"
-								importedModule.id
-							)
-						)
+						isFileTypeNeedingSSR &&
+						// Should not SSR a module with ?astroPropagatedAssets
+						!ASTRO_PROPAGATED_ASSET_REGEX.test(importedModule.id)
 					) {
 						const mod = loader.getModuleById(importedModule.id);
 						if (!mod?.ssrModule) {

packages/astro/src/vite-plugin-head/index.ts

@@ -9,7 +9,8 @@ import { getTopLevelPages, walkParentInfos } from '../core/build/graph.js';
 import type { BuildInternals } from '../core/build/internal.js';
 import { getAstroMetadata } from '../vite-plugin-astro/index.js';
 
-const injectExp = /^\/\/\s*astro-head-inject/;
+// Detect this in comments, both in .astro components and in js/ts files.
+const injectExp = /(^\/\/|\/\/!)\s*astro-head-inject/;
 
 export default function configHeadVitePlugin({
 	settings,
@@ -32,6 +33,7 @@ export default function configHeadVitePlugin({
 		seen.add(id);
 		const mod = server.moduleGraph.getModuleById(id);
 		const info = this.getModuleInfo(id);
+
 		if (info?.meta.astro) {
 			const astroMetadata = getAstroMetadata(info);
 			if (astroMetadata) {

packages/astro/src/vite-plugin-markdown/content-entry-type.ts

@@ -13,6 +13,8 @@ export const markdownContentEntryType: ContentEntryType = {
 			rawData: parsed.matter,
 		};
 	},
+	// We need to handle propagation for Markdown because they support layouts which will bring in styles.
+	handlePropagation: true,
 };
 
 /**
@@ -30,6 +32,9 @@ export const mdxContentEntryType: ContentEntryType = {
 			rawData: parsed.matter,
 		};
 	},
+	// MDX can import scripts and styles,
+	// so wrap all MDX files with script / style propagation checks
+	handlePropagation: true,
 	contentModuleTypes: `declare module 'astro:content' {
 	interface Render {
 		'.mdx': Promise<{

packages/integrations/markdoc/components/Renderer.astro

@@ -1,4 +1,5 @@
 ---
+//! astro-head-inject
 import type { Config } from '@markdoc/markdoc';
 import Markdoc from '@markdoc/markdoc';
 import { ComponentNode, createTreeNode } from './TreeNode.js';
@@ -14,4 +15,4 @@ const ast = Markdoc.Ast.fromJSON(stringifiedAst);
 const content = Markdoc.transform(ast, config);
 ---
 
-<ComponentNode treeNode={createTreeNode(content)} />
+<ComponentNode treeNode={await createTreeNode(content)} />

packages/integrations/markdoc/components/TreeNode.ts

@@ -2,7 +2,16 @@ import type { AstroInstance } from 'astro';
 import { Fragment } from 'astro/jsx-runtime';
 import type { RenderableTreeNode } from '@markdoc/markdoc';
 import Markdoc from '@markdoc/markdoc';
-import { createComponent, renderComponent, render } from 'astro/runtime/server/index.js';
+import {
+	createComponent,
+	renderComponent,
+	render,
+	renderScriptElement,
+	renderUniqueStylesheet,
+	createHeadAndContent,
+	unescapeHTML,
+	renderTemplate,
+} from 'astro/runtime/server/index.js';
 
 export type TreeNode =
 	| {
@@ -12,6 +21,9 @@ export type TreeNode =
 	| {
 			type: 'component';
 			component: AstroInstance['default'];
+			collectedLinks?: string[];
+			collectedStyles?: string[];
+			collectedScripts?: string[];
 			props: Record<string, any>;
 			children: TreeNode[];
 	  }
@@ -32,20 +44,67 @@ export const ComponentNode = createComponent({
 				)}`,
 		};
 		if (treeNode.type === 'component') {
-			return renderComponent(
-				result,
-				treeNode.component.name,
-				treeNode.component,
-				treeNode.props,
-				slots
+			let styles = '',
+				links = '',
+				scripts = '';
+			if (Array.isArray(treeNode.collectedStyles)) {
+				styles = treeNode.collectedStyles
+					.map((style: any) =>
+						renderUniqueStylesheet({
+							type: 'inline',
+							content: style,
+						})
+					)
+					.join('');
+			}
+			if (Array.isArray(treeNode.collectedLinks)) {
+				links = treeNode.collectedLinks
+					.map((link: any) => {
+						return renderUniqueStylesheet(result, {
+							href: link[0] === '/' ? link : '/' + link,
+						});
+					})
+					.join('');
+			}
+			if (Array.isArray(treeNode.collectedScripts)) {
+				scripts = treeNode.collectedScripts
+					.map((script: any) => renderScriptElement(script))
+					.join('');
+			}
+
+			const head = unescapeHTML(styles + links + scripts);
+
+			let headAndContent = createHeadAndContent(
+				head,
+				renderTemplate`${renderComponent(
+					result,
+					treeNode.component.name,
+					treeNode.component,
+					treeNode.props,
+					slots
+				)}`
 			);
+
+			// Let the runtime know that this component is being used.
+			result.propagators.set(
+				{},
+				{
+					init() {
+						return headAndContent;
+					},
+				}
+			);
+
+			return headAndContent;
 		}
 		return renderComponent(result, treeNode.tag, treeNode.tag, treeNode.attributes, slots);
 	},
-	propagation: 'none',
+	propagation: 'self',
 });
 
-export function createTreeNode(node: RenderableTreeNode | RenderableTreeNode[]): TreeNode {
+export async function createTreeNode(
+	node: RenderableTreeNode | RenderableTreeNode[]
+): Promise<TreeNode> {
 	if (typeof node === 'string' || typeof node === 'number') {
 		return { type: 'text', content: String(node) };
 	} else if (Array.isArray(node)) {
@@ -53,16 +112,17 @@ export function createTreeNode(node: RenderableTreeNode | RenderableTreeNode[]):
 			type: 'component',
 			component: Fragment,
 			props: {},
-			children: node.map((child) => createTreeNode(child)),
+			children: await Promise.all(node.map((child) => createTreeNode(child))),
 		};
 	} else if (node === null || typeof node !== 'object' || !Markdoc.Tag.isTag(node)) {
 		return { type: 'text', content: '' };
 	}
 
+	const children = await Promise.all(node.children.map((child) => createTreeNode(child)));
+
 	if (typeof node.name === 'function') {
 		const component = node.name;
 		const props = node.attributes;
-		const children = node.children.map((child) => createTreeNode(child));
 
 		return {
 			type: 'component',
@@ -70,12 +130,38 @@ export function createTreeNode(node: RenderableTreeNode | RenderableTreeNode[]):
 			props,
 			children,
 		};
+	} else if (isPropagatedAssetsModule(node.name)) {
+		const { collectedStyles, collectedLinks, collectedScripts } = node.name;
+		const component = (await node.name.getMod())?.default ?? Fragment;
+		const props = node.attributes;
+
+		return {
+			type: 'component',
+			component,
+			collectedStyles,
+			collectedLinks,
+			collectedScripts,
+			props,
+			children,
+		};
 	} else {
 		return {
 			type: 'element',
 			tag: node.name,
 			attributes: node.attributes,
-			children: node.children.map((child) => createTreeNode(child)),
+			children,
 		};
 	}
 }
+
+type PropagatedAssetsModule = {
+	__astroPropagation: true;
+	getMod: () => Promise<AstroInstance['default']>;
+	collectedStyles: string[];
+	collectedLinks: string[];
+	collectedScripts: string[];
+};
+
+function isPropagatedAssetsModule(module: any): module is PropagatedAssetsModule {
+	return typeof module === 'object' && module != null && '__astroPropagation' in module;
+}

packages/integrations/markdoc/src/index.ts

@@ -32,7 +32,11 @@ export default function markdocIntegration(legacyConfig?: any): AstroIntegration
 		name: '@astrojs/markdoc',
 		hooks: {
 			'astro:config:setup': async (params) => {
-				const { config: astroConfig, addContentEntryType } = params as SetupHookParams;
+				const {
+					config: astroConfig,
+					updateConfig,
+					addContentEntryType,
+				} = params as SetupHookParams;
 
 				markdocConfigResult = await loadMarkdocConfig(astroConfig);
 				const userMarkdocConfig = markdocConfigResult?.config ?? {};
@@ -49,6 +53,9 @@ export default function markdocIntegration(legacyConfig?: any): AstroIntegration
 				addContentEntryType({
 					extensions: ['.mdoc'],
 					getEntryInfo,
+					// Markdoc handles script / style propagation
+					// for Astro components internally
+					handlePropagation: false,
 					async getRenderModule({ entry, viteId }) {
 						const ast = Markdoc.parse(entry.body);
 						const pluginContext = this;
@@ -88,7 +95,10 @@ export default function markdocIntegration(legacyConfig?: any): AstroIntegration
 							});
 						}
 
-						const res = `import { jsx as h } from 'astro/jsx-runtime';
+						const res = `import {
+							createComponent,
+							renderComponent,
+						} from 'astro/runtime/server/index.js';
 						import { Renderer } from '@astrojs/markdoc/components';
 						import { collectHeadings, setupConfig, Markdoc } from '@astrojs/markdoc/runtime';
 import * as entry from ${JSON.stringify(viteId + '?astroContentCollectionEntry')};
@@ -119,14 +129,24 @@ export function getHeadings() {
 	const content = Markdoc.transform(ast, config);
 	return collectHeadings(Array.isArray(content) ? content : content.children);
 }
-export async function Content (props) {
-	const config = setupConfig({
-		...userConfig,
-		variables: { ...userConfig.variables, ...props },
-	}, entry);
 
-	return h(Renderer, { config, stringifiedAst });
-}`;
+export const Content = createComponent({
+	factory(result, props) {
+		const config = setupConfig({
+			...userConfig,
+			variables: { ...userConfig.variables, ...props },
+		}, entry);
+		
+		return renderComponent(
+			result,
+			Renderer.name,
+			Renderer,
+			{ stringifiedAst, config },
+			{}
+		);
+	},
+	propagation: 'self',
+});`;
 						return { code: res };
 					},
 					contentModuleTypes: await fs.promises.readFile(
@@ -134,6 +154,27 @@ export async function Content (props) {
 						'utf-8'
 					),
 				});
+
+				updateConfig({
+					vite: {
+						plugins: [
+							{
+								name: '@astrojs/markdoc:astro-propagated-assets',
+								enforce: 'pre',
+								// Astro component styles and scripts should only be injected
+								// When a given Markdoc file actually uses that component.
+								// Add the `astroPropagatedAssets` flag to inject only when rendered.
+								resolveId(this: rollup.TransformPluginContext, id: string, importer: string) {
+									if (importer === markdocConfigResult?.fileUrl.pathname && id.endsWith('.astro')) {
+										return this.resolve(id + '?astroPropagatedAssets', importer, {
+											skipSelf: true,
+										});
+									}
+								},
+							},
+						],
+					},
+				});
 			},
 			'astro:server:setup': async ({ server }) => {
 				server.watcher.on('all', (event, entry) => {

packages/integrations/markdoc/src/nodes/heading.ts

@@ -37,13 +37,14 @@ export const heading: Schema = {
 		const slug = getSlug(attributes, children, config.ctx.headingSlugger);
 
 		const render = config.nodes?.heading?.render ?? `h${level}`;
+
 		const tagProps =
 			// For components, pass down `level` as a prop,
 			// alongside `__collectHeading` for our `headings` collector.
 			// Avoid accidentally rendering `level` as an HTML attribute otherwise!
-			typeof render === 'function'
-				? { ...attributes, id: slug, __collectHeading: true, level }
-				: { ...attributes, id: slug };
+			typeof render === 'string'
+				? { ...attributes, id: slug }
+				: { ...attributes, id: slug, __collectHeading: true, level };
 
 		return new Markdoc.Tag(render, tagProps, children);
 	},

packages/integrations/mdx/src/index.ts

@@ -55,6 +55,9 @@ export default function mdx(partialMdxOptions: Partial<MdxOptions> = {}): AstroI
 						new URL('../template/content-module-types.d.ts', import.meta.url),
 						'utf-8'
 					),
+					// MDX can import scripts and styles,
+					// so wrap all MDX files with script / style propagation checks
+					handlePropagation: true,
 				});
 
 				const extendMarkdownConfig =