From a221f9b3b7bee9a419b256a563428243014b3a4e Mon Sep 17 00:00:00 2001
From: Xavier Stouder <xavier@stouder.io>
Date: Thu, 10 Aug 2023 01:23:03 +0200
Subject: [PATCH] fix: do not wrongfully match application/javascript mime

Fixes: https://github.com/nodejs/node/issues/48957
---
 lib/internal/modules/esm/formats.js | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/lib/internal/modules/esm/formats.js b/lib/internal/modules/esm/formats.js
index 63742914597c46..f401a18e6340a2 100644
--- a/lib/internal/modules/esm/formats.js
+++ b/lib/internal/modules/esm/formats.js
@@ -24,12 +24,7 @@ if (experimentalWasmModules) {
  * @returns {string | null}
  */
 function mimeToFormat(mime) {
-  if (
-    RegExpPrototypeExec(
-      /\s*(text|application)\/javascript\s*(;\s*charset=utf-?8\s*)?/i,
-      mime,
-    ) !== null
-  ) return 'module';
+  if (mime === 'text/javascript') return 'module';
   if (mime === 'application/json') return 'json';
   if (experimentalWasmModules && mime === 'application/wasm') return 'wasm';
   return null;