Workers can log to the console just fine.

src/sample/worker/main.ts

@@ -14,12 +14,6 @@ const init: SampleInit = async ({ canvas, pageState }) => {
     // complexity. Here we establish a convention that all messages to and from the worker will
     // have a `type` field that we can use to determine the content of the message.
     switch (ev.data.type) {
-      case 'log': {
-        // Workers don't have a built-in mechanism for logging to the console, so it's useful to
-        // create a way to echo console messages.
-        console.log(ev.data.message);
-        break;
-      }
       default: {
         console.error(`Unknown Message Type: ${ev.data.type}`);
       }

src/sample/worker/worker.ts

@@ -21,10 +21,9 @@ self.addEventListener('message', (ev) => {
       try {
         init(ev.data.offscreenCanvas);
       } catch (err) {
-        self.postMessage({
-          type: 'log',
-          message: `Error while initializing WebGPU in worker process: ${err.message}`,
-        });
+        console.error(
+          `Error while initializing WebGPU in worker process: ${err.message}`
+        );
       }
       break;
     }