2 files changed, 4 insertions, 2 deletions
diff --git a/js/compiler.ts b/js/compiler.ts
index 6172b614f..1a85de5f5 100644
--- a/js/compiler.ts
+++ b/js/compiler.ts
@@ -46,7 +46,6 @@ type SourceMap = string;
 interface CompilerLookup {
   specifier: ModuleSpecifier;
   referrer: ContainingFile;
-  isWorker: boolean;
   cmdId: number;
 }
 
diff --git a/js/workers.ts b/js/workers.ts
index 6b768bf08..456449d48 100644
--- a/js/workers.ts
+++ b/js/workers.ts
@@ -129,10 +129,13 @@ export async function workerMain(): Promise<void> {
       log("workerMain got null message. quitting.");
       break;
     }
+
     if (window["onmessage"]) {
       const event = { data };
       window.onmessage(event);
-    } else {
+    }
+
+    if (!window["onmessage"]) {
       break;
     }
   }