diff --git a/rspack.config.ts b/rspack.config.ts
index 775e35e55..8d8abfccc 100644
--- a/rspack.config.ts
+++ b/rspack.config.ts
@@ -44,6 +44,9 @@ const config: rspack.Configuration = {
               syntax: 'typescript',
               decorators: true,
             },
+            transform: {
+              useDefineForClassFields: false,
+            },
             externalHelpers: true,
           },
           env: { targets },
diff --git a/tsconfig.json b/tsconfig.json
index 1217f044b..4a731ffe3 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -13,6 +13,7 @@
         "strictFunctionTypes": true,
         "strictNullChecks": true,
         "useUnknownInCatchVariables": true,
+        "useDefineForClassFields": false,
         "resolveJsonModule": true,
         "lib": [
             "es2017",