diff --git a/ts2panda/src/index.ts b/ts2panda/src/index.ts
index 65d1334a5575de1b0bec5216bfc668b709fc7c3e..1cd69fd212b3b0fa6e70665fc7489696bde05b43 100644
--- a/ts2panda/src/index.ts
+++ b/ts2panda/src/index.ts
@@ -516,7 +516,9 @@ namespace Compiler {
             strictNullChecks: false,
             skipLibCheck: true,
             alwaysStrict: true,
-            importsNotUsedAsValues: ts.ImportsNotUsedAsValues.Remove
+            importsNotUsedAsValues: ts.ImportsNotUsedAsValues.Remove,
+            experimentalDecorators: true,
+            preserveConstEnums: true
         };
     }
 }
diff --git a/ts2panda/src/typeChecker.ts b/ts2panda/src/typeChecker.ts
index 34aafaf0bb37edf3ea01879f07ab31194c7c08fd..85764ad230978c4d07f81b6e5dc1a15d5c549cb1 100644
--- a/ts2panda/src/typeChecker.ts
+++ b/ts2panda/src/typeChecker.ts
@@ -458,7 +458,7 @@ export class TypeChecker {
                 let exportedName = "default";
                 let expressionType = this.getTypeAtLocation(expression);
                 if (expressionType) {
-                    let typeNode = expressionType.getSymbol().valueDeclaration;
+                    let typeNode = expressionType.getSymbol()?.valueDeclaration;
                     TypeRecorder.getInstance().addNonReExportedType(exportedName, typeNode, expression);
                 }
                 break;