feat: allow ?worker&url to only get the worker url

packages/playground/worker/__tests__/worker.spec.ts

@@ -73,3 +73,11 @@ if (isBuild) {
     expect(content).toMatch(`window.Blob`)
   })
 }
+
+test('?worker&url import', async () => {
+  if (isBuild) {
+    expect(await page.textContent('.worker-url')).toMatch('/assets/my-worker.')
+  } else {
+    expect(await page.textContent('.worker-url')).toMatch('/my-worker.ts?worker_file')
+  }
+})

packages/playground/worker/index.html

@@ -19,12 +19,18 @@
   <span class="tick-count">0</span>
 </div>
 
+<p>
+  ?worker&url import
+  <code class="worker-url"></code>
+</p>
+
 <script type="module">
   import Worker from './my-worker?worker'
   import InlineWorker from './my-worker?worker&inline'
   import SharedWorker from './my-shared-worker?sharedworker&name=shared'
   import TSOutputWorker from './possible-ts-output-worker?worker'
   import { mode } from './workerImport'
+  import WorkerUrl from './my-worker?worker&url'
 
   document.querySelector('.mode-true').textContent = mode
 
@@ -67,7 +73,9 @@
     inlineWorker.postMessage('ping')
   })
 
+  text('.worker-url', WorkerUrl)
+
   function text(el, text) {
     document.querySelector(el).textContent = text
   }
-</script>
+</script>

packages/vite/src/node/plugins/worker.ts

@@ -103,6 +103,10 @@ export function webWorkerPlugin(config: ResolvedConfig): Plugin {
         url = injectQuery(url, WorkerFileId)
       }
 
+      if (query.url != null) {
+        return `export default ${JSON.stringify(url)}`
+      }
+
       const workerConstructor =
         query.sharedworker != null ? 'SharedWorker' : 'Worker'
       const workerOptions = { type: 'module' }