diff --git a/packages/webpack/src/config/base.js b/packages/webpack/src/config/base.js
index 694e82010892..aa19e117c358 100644
--- a/packages/webpack/src/config/base.js
+++ b/packages/webpack/src/config/base.js
@@ -329,7 +329,7 @@ export default class WebpackBaseConfig {
         ]
       },
       {
-        test: /\.m?jsx?$/i,
+        test: /\.[mc]?jsx?$/i,
         type: 'javascript/auto',
         exclude: (file) => {
           file = file.split(/node_modules(.*)/)[1]