From 89cb78460bd983a668d6abfbf5cc1cb4540ce7c6 Mon Sep 17 00:00:00 2001
From: "vercel-gh-bot-2[bot]"
 <282331341+vercel-gh-bot-2[bot]@users.noreply.github.com>
Date: Tue, 21 Jul 2026 22:02:49 +0000
Subject: [PATCH] test(turbopack): cover package module specifiers in worker
 URLs

Next-Maintainer-Receipt: v1.ojGI4WblTRW96gOPpmw19HmxN8HHA7baxuJVc6SGtcQ
---
 .../app/package-module-specifier/page.js      | 31 +++++++++++++++++++
 .../node_modules/worker-package/index.js      |  3 ++
 .../node_modules/worker-package/package.json  | 15 +++++++++
 .../node_modules/worker-package/worker.js     |  1 +
 test/e2e/app-dir/worker/worker.test.ts        | 15 +++++++++
 5 files changed, 65 insertions(+)
 create mode 100644 test/e2e/app-dir/worker/app/package-module-specifier/page.js
 create mode 100644 test/e2e/app-dir/worker/node_modules/worker-package/index.js
 create mode 100644 test/e2e/app-dir/worker/node_modules/worker-package/package.json
 create mode 100644 test/e2e/app-dir/worker/node_modules/worker-package/worker.js

diff --git a/test/e2e/app-dir/worker/app/package-module-specifier/page.js b/test/e2e/app-dir/worker/app/package-module-specifier/page.js
new file mode 100644
index 000000000000..b0ce438102b9
--- /dev/null
+++ b/test/e2e/app-dir/worker/app/package-module-specifier/page.js
@@ -0,0 +1,31 @@
+'use client'
+
+import { useState } from 'react'
+import { createWorker } from 'worker-package'
+
+export default function Page() {
+  const [state, setState] = useState('default')
+
+  return (
+    <>
+      <button
+        onClick={() => {
+          try {
+            const worker = createWorker()
+            worker.addEventListener('message', (event) => {
+              setState(event.data)
+            })
+            worker.addEventListener('error', (event) => {
+              setState(`error: ${event.message}`)
+            })
+          } catch (error) {
+            setState(`error: ${error.message}`)
+          }
+        }}
+      >
+        Start worker
+      </button>
+      <p id="worker-state">{state}</p>
+    </>
+  )
+}
diff --git a/test/e2e/app-dir/worker/node_modules/worker-package/index.js b/test/e2e/app-dir/worker/node_modules/worker-package/index.js
new file mode 100644
index 000000000000..e8e9976cd400
--- /dev/null
+++ b/test/e2e/app-dir/worker/node_modules/worker-package/index.js
@@ -0,0 +1,3 @@
+export function createWorker() {
+  return new Worker(new URL('worker-package/worker.js', import.meta.url))
+}
diff --git a/test/e2e/app-dir/worker/node_modules/worker-package/package.json b/test/e2e/app-dir/worker/node_modules/worker-package/package.json
new file mode 100644
index 000000000000..20e02ccb8b48
--- /dev/null
+++ b/test/e2e/app-dir/worker/node_modules/worker-package/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "worker-package",
+  "version": "1.0.0",
+  "type": "module",
+  "exports": {
+    ".": {
+      "import": "./index.js",
+      "default": "./index.js"
+    },
+    "./*": {
+      "import": "./*",
+      "default": "./*"
+    }
+  }
+}
diff --git a/test/e2e/app-dir/worker/node_modules/worker-package/worker.js b/test/e2e/app-dir/worker/node_modules/worker-package/worker.js
new file mode 100644
index 000000000000..cbe93316aad8
--- /dev/null
+++ b/test/e2e/app-dir/worker/node_modules/worker-package/worker.js
@@ -0,0 +1 @@
+self.postMessage('worker-loaded')
diff --git a/test/e2e/app-dir/worker/worker.test.ts b/test/e2e/app-dir/worker/worker.test.ts
index 772af1b36fa8..155aca281328 100644
--- a/test/e2e/app-dir/worker/worker.test.ts
+++ b/test/e2e/app-dir/worker/worker.test.ts
@@ -56,6 +56,21 @@ describe('app dir - workers', () => {
     )
   })
 
+  it('should support package module specifiers in web worker URLs', async () => {
+    const browser = await next.browser('/package-module-specifier', {
+      beforePageLoad,
+    })
+    expect(await browser.elementByCss('#worker-state').text()).toBe('default')
+
+    await browser.elementByCss('button').click()
+
+    await retry(async () =>
+      expect(await browser.elementByCss('#worker-state').text()).toBe(
+        'worker-loaded'
+      )
+    )
+  })
+
   it('should not bundle web workers with string specifiers', async () => {
     const browser = await next.browser('/string', {
       beforePageLoad,