From 48042266f02df12b7a97a2abdd310553aff80f64 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Mon, 22 Dec 2025 09:07:44 +0000
Subject: [PATCH 1/3] Initial plan


From 2966f54e015977c8c83f487cc8aa47fcc1ce19ae Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Mon, 22 Dec 2025 09:15:34 +0000
Subject: [PATCH 2/3] Fix multi-line new URL parsing with trailing comma

Co-authored-by: sapphi-red <49056869+sapphi-red@users.noreply.github.com>
---
 .../plugins/workerImportMetaUrl.spec.ts       | 32 +++++++++++++++++++
 .../src/node/plugins/workerImportMetaUrl.ts   |  2 +-
 2 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/packages/vite/src/node/__tests__/plugins/workerImportMetaUrl.spec.ts b/packages/vite/src/node/__tests__/plugins/workerImportMetaUrl.spec.ts
index a6d60a84b345f3..3fbf2f9886c17c 100644
--- a/packages/vite/src/node/__tests__/plugins/workerImportMetaUrl.spec.ts
+++ b/packages/vite/src/node/__tests__/plugins/workerImportMetaUrl.spec.ts
@@ -221,4 +221,36 @@ new Worker(
       `"repro(new Worker(new URL(/* @vite-ignore */ "/worker?worker_file&type=classic", '' + import.meta.url)), { type: "module" })"`,
     )
   })
+
+  test('with multi-line new URL and trailing comma', async () => {
+    expect(
+      await transform(`new Worker(
+  new URL(
+    "./worker.js",
+    import.meta.url,
+  )
+)`),
+    ).toMatchInlineSnapshot(`
+      "new Worker(
+        new URL(/* @vite-ignore */ "/worker.js?worker_file&type=classic", '' + import.meta.url)
+      )"
+    `)
+  })
+
+  test('with multi-line new URL, trailing comma, and worker options', async () => {
+    expect(
+      await transform(`const worker = new Worker(
+  new URL(
+    "../some-loooooooooooooooooong-file-path-of-module-name.js",
+    import.meta.url,
+  ),
+  { type: "module" },
+)`),
+    ).toMatchInlineSnapshot(`
+      "const worker = new Worker(
+        new URL(/* @vite-ignore */ "/@fs/home/runner/work/vite/some-loooooooooooooooooong-file-path-of-module-name.js?worker_file&type=module", '' + import.meta.url),
+        { type: "module" },
+      )"
+    `)
+  })
 })
diff --git a/packages/vite/src/node/plugins/workerImportMetaUrl.ts b/packages/vite/src/node/plugins/workerImportMetaUrl.ts
index a8b25a262ff0f4..991783b64e075b 100644
--- a/packages/vite/src/node/plugins/workerImportMetaUrl.ts
+++ b/packages/vite/src/node/plugins/workerImportMetaUrl.ts
@@ -209,7 +209,7 @@ export function workerImportMetaUrlPlugin(config: ResolvedConfig): Plugin {
         let s: MagicString | undefined
         const cleanString = stripLiteral(code)
         const workerImportMetaUrlRE =
-          /\bnew\s+(?:Worker|SharedWorker)\s*\(\s*(new\s+URL\s*\(\s*('[^']+'|"[^"]+"|`[^`]+`)\s*,\s*import\.meta\.url\s*\))/dg
+          /\bnew\s+(?:Worker|SharedWorker)\s*\(\s*(new\s+URL\s*\(\s*('[^']+'|"[^"]+"|`[^`]+`)\s*,\s*import\.meta\.url\s*(?:,\s*)?\))/dg
 
         let match: RegExpExecArray | null
         while ((match = workerImportMetaUrlRE.exec(cleanString))) {

From 80808a95b915a14df04fb70f630538ba10c61d77 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Mon, 22 Dec 2025 10:35:36 +0000
Subject: [PATCH 3/3] Simplify test case to use ./worker.js for consistency

Co-authored-by: sapphi-red <49056869+sapphi-red@users.noreply.github.com>
---
 .../src/node/__tests__/plugins/workerImportMetaUrl.spec.ts    | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/vite/src/node/__tests__/plugins/workerImportMetaUrl.spec.ts b/packages/vite/src/node/__tests__/plugins/workerImportMetaUrl.spec.ts
index 3fbf2f9886c17c..348e3e39be0147 100644
--- a/packages/vite/src/node/__tests__/plugins/workerImportMetaUrl.spec.ts
+++ b/packages/vite/src/node/__tests__/plugins/workerImportMetaUrl.spec.ts
@@ -241,14 +241,14 @@ new Worker(
     expect(
       await transform(`const worker = new Worker(
   new URL(
-    "../some-loooooooooooooooooong-file-path-of-module-name.js",
+    "./worker.js",
     import.meta.url,
   ),
   { type: "module" },
 )`),
     ).toMatchInlineSnapshot(`
       "const worker = new Worker(
-        new URL(/* @vite-ignore */ "/@fs/home/runner/work/vite/some-loooooooooooooooooong-file-path-of-module-name.js?worker_file&type=module", '' + import.meta.url),
+        new URL(/* @vite-ignore */ "/worker.js?worker_file&type=module", '' + import.meta.url),
         { type: "module" },
       )"
     `)