From 6b55313560dd7819bc9847823c4e1ce7c1d43ccc Mon Sep 17 00:00:00 2001
From: Jack Westbrook <jack.westbrook@gmail.com>
Date: Thu, 7 Mar 2024 14:35:17 +0100
Subject: [PATCH] feat(frontend): provide a corsworker for vite

---
 public/app/core/utils/CorsWorker.ts | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/public/app/core/utils/CorsWorker.ts b/public/app/core/utils/CorsWorker.ts
index d8bf41d2aff..6c01343af2c 100644
--- a/public/app/core/utils/CorsWorker.ts
+++ b/public/app/core/utils/CorsWorker.ts
@@ -19,3 +19,15 @@ export class CorsWorker extends window.Worker {
     URL.revokeObjectURL(objectURL);
   }
 }
+
+// Vite equivalent of the above CorsWorker to allow loading workers from a different origin
+export function WorkaroundWorker(workerUrl: string, options: WorkerOptions) {
+  const js = `import ${JSON.stringify(new URL(workerUrl, import.meta.url))}`;
+  const blob = new Blob([js], { type: 'application/javascript' });
+  const objURL = URL.createObjectURL(blob);
+  const worker = new Worker(objURL, { type: 'module', name: options?.name });
+  worker.addEventListener('error', (e) => {
+    URL.revokeObjectURL(objURL);
+  });
+  return worker;
+}