diff --git a/.babelrc.js b/.babelrc.js
index <HASH>..<HASH> 100644
--- a/.babelrc.js
+++ b/.babelrc.js
@@ -29,11 +29,4 @@ module.exports = {
       ],
 
   ignore: [/\/node_modules\/(?!@interactjs\/)/],
-
-  extensions: [
-    '.ts',
-    '.tsx',
-    '.js',
-    '.jsx',
-  ]
 }
diff --git a/scripts/bundler.js b/scripts/bundler.js
index <HASH>..<HASH> 100644
--- a/scripts/bundler.js
+++ b/scripts/bundler.js
@@ -44,6 +44,12 @@ module.exports = function (options) {
         sourceType: 'module',
         global: true,
         ...babelrc,
+        extensions: [
+          '.ts',
+          '.tsx',
+          '.js',
+          '.jsx',
+        ],
       }],
     ],
chore: move babelify extensions config to bundler