Remove @mdx-js/rollup dependency

.changeset/spotty-glasses-return.md

@@ -0,0 +1,5 @@
+---
+'@astrojs/mdx': patch
+---
+
+Remove `@mdx-js/rollup` dependency

packages/integrations/mdx/package.json

@@ -37,7 +37,6 @@
     "@astrojs/markdown-remark": "^2.2.1",
     "@astrojs/prism": "^2.1.2",
     "@mdx-js/mdx": "^2.3.0",
-    "@mdx-js/rollup": "^2.3.0",
     "acorn": "^8.8.0",
     "es-module-lexer": "^1.1.1",
     "estree-util-visit": "^1.2.0",

packages/integrations/mdx/src/index.ts

@@ -1,8 +1,7 @@
 import { markdownConfigDefaults } from '@astrojs/markdown-remark';
 import { toRemarkInitializeAstroData } from '@astrojs/markdown-remark/dist/internal.js';
-import { compile as mdxCompile } from '@mdx-js/mdx';
+import { compile as mdxCompile, type CompileOptions } from '@mdx-js/mdx';
 import type { PluggableList } from '@mdx-js/mdx/lib/core.js';
-import mdxPlugin, { type Options as MdxRollupPluginOptions } from '@mdx-js/rollup';
 import type { AstroIntegration, ContentEntryType, HookParameters } from 'astro';
 import { parse as parseESM } from 'es-module-lexer';
 import fs from 'node:fs/promises';
@@ -67,7 +66,7 @@ export default function mdx(partialMdxOptions: Partial<MdxOptions> = {}): AstroI
 					),
 				});
 
-				const mdxPluginOpts: MdxRollupPluginOptions = {
+				const mdxPluginOpts: CompileOptions = {
 					remarkPlugins: await getRemarkPlugins(mdxOptions, config),
 					rehypePlugins: getRehypePlugins(mdxOptions),
 					recmaPlugins: mdxOptions.recmaPlugins,
@@ -87,8 +86,8 @@ export default function mdx(partialMdxOptions: Partial<MdxOptions> = {}): AstroI
 					vite: {
 						plugins: [
 							{
+								name: '@mdx-js/rollup',
 								enforce: 'pre',
-								...mdxPlugin(mdxPluginOpts),
 								configResolved(resolved) {
 									importMetaEnv = { ...importMetaEnv, ...resolved.env };
 								},

packages/integrations/mdx/src/plugins.ts

@@ -5,7 +5,6 @@ import {
 } from '@astrojs/markdown-remark/dist/internal.js';
 import { nodeTypes } from '@mdx-js/mdx';
 import type { PluggableList } from '@mdx-js/mdx/lib/core.js';
-import type { Options as MdxRollupPluginOptions } from '@mdx-js/rollup';
 import type { AstroConfig } from 'astro';
 import type { Literal, MemberExpression } from 'estree';
 import { visit as estreeVisit } from 'estree-util-visit';
@@ -99,7 +98,7 @@ export function rehypeApplyFrontmatterExport() {
 export async function getRemarkPlugins(
 	mdxOptions: MdxOptions,
 	config: AstroConfig
-): Promise<MdxRollupPluginOptions['remarkPlugins']> {
+): Promise<PluggableList> {
 	let remarkPlugins: PluggableList = [
 		...(config.experimental.assets ? [remarkCollectImages, remarkImageToComponent] : []),
 	];
@@ -128,7 +127,7 @@ export async function getRemarkPlugins(
 	return remarkPlugins;
 }
 
-export function getRehypePlugins(mdxOptions: MdxOptions): MdxRollupPluginOptions['rehypePlugins'] {
+export function getRehypePlugins(mdxOptions: MdxOptions): PluggableList {
 	let rehypePlugins: PluggableList = [
 		// ensure `data.meta` is preserved in `properties.metastring` for rehype syntax highlighters
 		rehypeMetaString,