diff --git a/tsconfig.json b/tsconfig.json
index bda19f5..40c1296 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -18,6 +18,7 @@
 		"noUnusedParameters": true,
 		"noFallthroughCasesInSwitch": true,
 		"noEmitOnError": true,
+		"useDefineForClassFields": true,
 		"forceConsistentCasingInFileNames": true,
 		"skipLibCheck": true
 	}