feat: allow Render type injection

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

@@ -991,6 +991,7 @@ export interface ContentEntryType {
 		body: string;
 		slug: string;
 	}>;
+	contentModuleTypes?: string;
 }
 
 export interface AstroSettings {

packages/astro/src/content/template/types.d.ts

@@ -1,7 +1,17 @@
+declare module 'astro:content' {
+	interface Render {
+		'.md': Promise<{
+			Content: import('astro').MarkdownInstance<{}>['Content'];
+			headings: import('astro').MarkdownHeading[];
+			remarkPluginFrontmatter: Record<string, any>;
+		}>;
+	}
+}
+
 declare module 'astro:content' {
 	export { z } from 'astro/zod';
 	export type CollectionEntry<C extends keyof typeof entryMap> =
-		(typeof entryMap)[C][keyof (typeof entryMap)[C]] & Render;
+		(typeof entryMap)[C][keyof (typeof entryMap)[C]];
 
 	type BaseSchemaWithoutEffects =
 		| import('astro/zod').AnyZodObject
@@ -57,14 +67,6 @@ declare module 'astro:content' {
 		Required<ContentConfig['collections'][C]>['schema']
 	>;
 
-	type Render = {
-		render(): Promise<{
-			Content: import('astro').MarkdownInstance<{}>['Content'];
-			headings: import('astro').MarkdownHeading[];
-			remarkPluginFrontmatter: Record<string, any>;
-		}>;
-	};
-
 	const entryMap: {
 		// @@ENTRY_MAP@@
 	};

packages/astro/src/content/types-generator.ts

@@ -4,7 +4,7 @@ import type fsMod from 'node:fs';
 import * as path from 'node:path';
 import { fileURLToPath, pathToFileURL } from 'node:url';
 import { normalizePath, ViteDevServer } from 'vite';
-import type { AstroSettings } from '../@types/astro.js';
+import type { AstroSettings, ContentEntryType } from '../@types/astro.js';
 import { AstroError, AstroErrorData } from '../core/errors/index.js';
 import { info, LogOptions, warn } from '../core/logger/core.js';
 import { isRelativePath } from '../core/path.js';
@@ -63,7 +63,7 @@ export async function createContentTypesGenerator({
 	let events: EventWithOptions[] = [];
 	let debounceTimeout: NodeJS.Timeout | undefined;
 
-	const contentTypesBase = await fs.promises.readFile(contentPaths.typesTemplate, 'utf-8');
+	const typeTemplateContent = await fs.promises.readFile(contentPaths.typesTemplate, 'utf-8');
 
 	async function init(): Promise<
 		{ typesGenerated: true } | { typesGenerated: false; reason: 'no-content-dir' }
@@ -263,8 +263,9 @@ export async function createContentTypesGenerator({
 				fs,
 				contentTypes,
 				contentPaths,
-				contentTypesBase,
+				typeTemplateContent,
 				contentConfig: observable.status === 'loaded' ? observable.config : undefined,
+				contentEntryTypes: settings.contentEntryTypes,
 			});
 			if (observable.status === 'loaded' && ['info', 'warn'].includes(logLevel)) {
 				warnNonexistentCollections({
@@ -322,13 +323,15 @@ async function writeContentFiles({
 	fs,
 	contentPaths,
 	contentTypes,
-	contentTypesBase,
+	typeTemplateContent,
+	contentEntryTypes,
 	contentConfig,
 }: {
 	fs: typeof fsMod;
 	contentPaths: ContentPaths;
 	contentTypes: ContentTypes;
-	contentTypesBase: string;
+	typeTemplateContent: string;
+	contentEntryTypes: ContentEntryType[];
 	contentConfig?: ContentConfig;
 }) {
 	let contentTypesStr = '';
@@ -340,8 +343,11 @@ async function writeContentFiles({
 		for (const entryKey of entryKeys) {
 			const entryMetadata = contentTypes[collectionKey][entryKey];
 			const dataType = collectionConfig?.schema ? `InferEntrySchema<${collectionKey}>` : 'any';
+			const renderType = `{ render(): Render[${JSON.stringify(
+				path.extname(JSON.parse(entryKey))
+			)}] }`;
 			const slugType = JSON.stringify(entryMetadata.slug);
-			contentTypesStr += `${entryKey}: {\n  id: ${entryKey},\n  slug: ${slugType},\n  body: string,\n  collection: ${collectionKey},\n  data: ${dataType}\n},\n`;
+			contentTypesStr += `${entryKey}: {\n  id: ${entryKey},\n  slug: ${slugType},\n  body: string,\n  collection: ${collectionKey},\n  data: ${dataType}\n} & ${renderType},\n`;
 		}
 		contentTypesStr += `},\n`;
 	}
@@ -361,13 +367,21 @@ async function writeContentFiles({
 		configPathRelativeToCacheDir = configPathRelativeToCacheDir.replace(/\.ts$/, '');
 	}
 
-	contentTypesBase = contentTypesBase.replace('// @@ENTRY_MAP@@', contentTypesStr);
-	contentTypesBase = contentTypesBase.replace(
+	for (const contentEntryType of contentEntryTypes) {
+		if (contentEntryType.contentModuleTypes) {
+			typeTemplateContent = contentEntryType.contentModuleTypes + '\n' + typeTemplateContent;
+		}
+	}
+	typeTemplateContent = typeTemplateContent.replace('// @@ENTRY_MAP@@', contentTypesStr);
+	typeTemplateContent = typeTemplateContent.replace(
 		"'@@CONTENT_CONFIG_TYPE@@'",
 		contentConfig ? `typeof import(${JSON.stringify(configPathRelativeToCacheDir)})` : 'never'
 	);
 
-	await fs.promises.writeFile(new URL(CONTENT_TYPES_FILE, contentPaths.cacheDir), contentTypesBase);
+	await fs.promises.writeFile(
+		new URL(CONTENT_TYPES_FILE, contentPaths.cacheDir),
+		typeTemplateContent
+	);
 }
 
 function warnNonexistentCollections({

packages/integrations/mdx/src/index.ts

@@ -23,19 +23,6 @@ export type MdxOptions = Omit<typeof markdownConfigDefaults, 'remarkPlugins' | '
 	remarkRehype: RemarkRehypeOptions;
 };
 
-const contentEntryType = {
-	extensions: ['.mdx'],
-	async getEntryInfo({ fileUrl, contents }: { fileUrl: URL; contents: string }) {
-		const parsed = parseFrontmatter(contents, fileURLToPath(fileUrl));
-		return {
-			data: parsed.data,
-			body: parsed.content,
-			slug: parsed.data.slug,
-			rawData: parsed.matter,
-		};
-	},
-};
-
 export default function mdx(partialMdxOptions: Partial<MdxOptions> = {}): AstroIntegration {
 	return {
 		name: '@astrojs/mdx',
@@ -47,6 +34,23 @@ export default function mdx(partialMdxOptions: Partial<MdxOptions> = {}): AstroI
 				addContentEntryType,
 				command,
 			}: any) => {
+				const contentEntryType = {
+					extensions: ['.mdx'],
+					async getEntryInfo({ fileUrl, contents }: { fileUrl: URL; contents: string }) {
+						const parsed = parseFrontmatter(contents, fileURLToPath(fileUrl));
+						return {
+							data: parsed.data,
+							body: parsed.content,
+							slug: parsed.data.slug,
+							rawData: parsed.matter,
+						};
+					},
+					contentModuleTypes: await fs.readFile(
+						new URL('../template/content-module-types.d.ts', import.meta.url),
+						'utf-8'
+					),
+				};
+
 				addPageExtension('.mdx');
 				addContentEntryType(contentEntryType);
 

packages/integrations/mdx/template/content-module-types.d.ts

@@ -0,0 +1,9 @@
+declare module 'astro:content' {
+	interface Render {
+		'.mdx': Promise<{
+			Content: import('astro').MarkdownInstance<{}>['Content'];
+			headings: import('astro').MarkdownHeading[];
+			remarkPluginFrontmatter: Record<string, any>;
+		}>;
+	}
+}