1 files changed, 4 insertions, 28 deletions
diff --git a/packages/integrations/mdx/src/astro-data-utils.ts b/packages/integrations/mdx/src/astro-data-utils.ts
index 3300c7b55..7c7f6119b 100644
--- a/packages/integrations/mdx/src/astro-data-utils.ts
+++ b/packages/integrations/mdx/src/astro-data-utils.ts
@@ -1,6 +1,4 @@
 import type { MarkdownAstroData } from 'astro';
-import { name as isValidIdentifierName } from 'estree-util-is-identifier-name';
-import type { MdxjsEsm } from 'mdast-util-mdx';
 import type { Data, VFile } from 'vfile';
 import { jsToTreeNode } from './utils.js';
 
@@ -12,35 +10,13 @@ export function remarkInitializeAstroData() {
 	};
 }
 
-export function rehypeApplyFrontmatterExport(
-	pageFrontmatter: Record<string, any>,
-	exportName = 'frontmatter'
-) {
+const EXPORT_NAME = 'frontmatter';
+
+export function rehypeApplyFrontmatterExport(pageFrontmatter: Record<string, any>) {
 	return function (tree: any, vfile: VFile) {
-		if (!isValidIdentifierName(exportName)) {
-			throw new Error(
-				`[MDX] ${JSON.stringify(
-					exportName
-				)} is not a valid frontmatter export name! Make sure "frontmatterOptions.name" could be used as a JS export (i.e. "export const frontmatterName = ...")`
-			);
-		}
 		const { frontmatter: injectedFrontmatter } = safelyGetAstroData(vfile.data);
 		const frontmatter = { ...injectedFrontmatter, ...pageFrontmatter };
-		let exportNodes: MdxjsEsm[] = [];
-		if (!exportName) {
-			exportNodes = Object.entries(frontmatter).map(([k, v]) => {
-				if (!isValidIdentifierName(k)) {
-					throw new Error(
-						`[MDX] A remark or rehype plugin tried to inject ${JSON.stringify(
-							k
-						)} as a top-level export, which is not a valid export name.`
-					);
-				}
-				return jsToTreeNode(`export const ${k} = ${JSON.stringify(v)};`);
-			});
-		} else {
-			exportNodes = [jsToTreeNode(`export const ${exportName} = ${JSON.stringify(frontmatter)};`)];
-		}
+		const exportNodes = [jsToTreeNode(`export const ${EXPORT_NAME} = ${JSON.stringify(frontmatter)};`)];
 		tree.children = exportNodes.concat(tree.children);
 	};
 }