From cdfd61ac567479def66e4b840f5c55a25189ee98 Mon Sep 17 00:00:00 2001
From: Titus Wormer <tituswormer@gmail.com>
Date: Tue, 8 Mar 2022 11:27:46 +0100
Subject: [PATCH] Fix ESM loader for Node 16- and React 18

Related-to: https://github.com/wooorm/xdm/commit/a778c57.
Related-to: https://github.com/mdx-js/mdx/pull/1808.
---
 lib/integration/node.js | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/integration/node.js b/lib/integration/node.js
index ca0ea28..1228bca 100644
--- a/lib/integration/node.js
+++ b/lib/integration/node.js
@@ -88,9 +88,15 @@ export function createLoader(options = {}) {
     }
 
     const file = await process(new VFile({value, path: new URL(context.url)}))
+    let source = String(file)
+
+    if (fixRuntimeWithoutExportMap) {
+      source = String(file).replace(/\/jsx-runtime(?=["'])/g, '$&.js')
+    }
+
     // V8 on Erbium.
     /* c8 ignore next 2 */
-    return {source: String(file).replace(/\/jsx-runtime(?=["'])/g, '$&.js')}
+    return {source}
   }
   /* c8 ignore end */
 }