diff --git a/apps/journal/app/lib/oauth.server.ts b/apps/journal/app/lib/oauth.server.ts
index 539c6a3..a4c8c30 100644
--- a/apps/journal/app/lib/oauth.server.ts
+++ b/apps/journal/app/lib/oauth.server.ts
@@ -264,10 +264,9 @@ export async function getAuthenticatedUser(request: Request) {
 // --- Error type ---
 
 export class OAuthError extends Error {
-  constructor(
-    public code: string,
-    message: string,
-  ) {
+  code: string;
+  constructor(code: string, message: string) {
     super(message);
+    this.code = code;
   }
 }
diff --git a/tsconfig.base.json b/tsconfig.base.json
index 9166196..3257189 100644
--- a/tsconfig.base.json
+++ b/tsconfig.base.json
@@ -17,6 +17,7 @@
     "noUncheckedIndexedAccess": true,
     "noUncheckedSideEffectImports": false,
     "noEmit": true,
+    "erasableSyntaxOnly": true,
     "allowImportingTsExtensions": true
   },
   "exclude": ["node_modules", "build", "dist"]