diff --git a/packages/core/src/server/compiler.js b/packages/core/src/server/compiler.js
index 7422c1b..6dc4663 100644
--- a/packages/core/src/server/compiler.js
+++ b/packages/core/src/server/compiler.js
@@ -143,7 +143,7 @@ class Compiler {
       [
         'prepend',
         {
-          prepend: 'const __non_webpack_require__ = require;',
+          prepend: '"undefined" === typeof global.__non_webpack_require__ && (global.__non_webpack_require__ = require);',
         },
         '__non_webpack_require__',
       ],