fix: mock Worker for tests

Author: JavaZeroo

vitest.setup.js

@@ -16,3 +16,17 @@ if (!window.matchMedia) {
     })),
   });
 }
+
+// Mock Worker
+class Worker {
+  constructor(stringUrl) {
+    this.url = stringUrl;
+    this.onmessage = () => { };
+  }
+  postMessage(msg) {
+    this.onmessage({ data: msg });
+  }
+  terminate() { }
+}
+
+global.Worker = Worker;