diff --git a/packages/playground/worker/__tests__/es/es-worker.spec.ts b/packages/playground/worker/__tests__/es/es-worker.spec.ts
index a815596721c268..27f81b010df74f 100644
--- a/packages/playground/worker/__tests__/es/es-worker.spec.ts
+++ b/packages/playground/worker/__tests__/es/es-worker.spec.ts
@@ -51,8 +51,12 @@ test.concurrent.each([[true], [false]])('shared worker', async (doTick) => {
   await waitSharedWorkerTick(page)
 })
 
-test('worker emitted', async () => {
-  await untilUpdated(() => page.textContent('.nested-worker'), 'pong')
+test('worker emitted and import.meta.url in nested worker (serve)', async () => {
+  expect(await page.textContent('.nested-worker')).toMatch('/worker-nested')
+  expect(await page.textContent('.nested-worker-module')).toMatch('/sub-worker')
+  expect(await page.textContent('.nested-worker-constructor')).toMatch(
+    '"type":"constructor"'
+  )
 })
 
 if (isBuild) {
@@ -60,7 +64,7 @@ if (isBuild) {
   // assert correct files
   test('inlined code generation', async () => {
     const files = fs.readdirSync(assetsDir)
-    expect(files.length).toBe(21)
+    expect(files.length).toBe(26)
     const index = files.find((f) => f.includes('main-module'))
     const content = fs.readFileSync(path.resolve(assetsDir, index), 'utf-8')
     const worker = files.find((f) => f.includes('my-worker'))
@@ -79,6 +83,15 @@ if (isBuild) {
     expect(content).toMatch(`(window.URL||window.webkitURL).createObjectURL`)
     expect(content).toMatch(`window.Blob`)
   })
+
+  test('worker emitted and import.meta.url in nested worker (build)', async () => {
+    expect(await page.textContent('.nested-worker-module')).toMatch(
+      '"type":"module"'
+    )
+    expect(await page.textContent('.nested-worker-constructor')).toMatch(
+      '"type":"constructor"'
+    )
+  })
 }
 
 test('module worker', async () => {
@@ -100,3 +113,11 @@ test('emit chunk', async () => {
     '"A string/es/"'
   )
 })
+
+test('import.meta.glob in worker', async () => {
+  expect(await page.textContent('.importMetaGlob-worker')).toMatch('["')
+})
+
+test('import.meta.globEager in worker', async () => {
+  expect(await page.textContent('.importMetaGlobEager-worker')).toMatch('["')
+})
diff --git a/packages/playground/worker/__tests__/iife/worker.spec.ts b/packages/playground/worker/__tests__/iife/worker.spec.ts
index 9be78d57edd702..16750a893cb073 100644
--- a/packages/playground/worker/__tests__/iife/worker.spec.ts
+++ b/packages/playground/worker/__tests__/iife/worker.spec.ts
@@ -51,10 +51,11 @@ test.concurrent.each([[true], [false]])('shared worker', async (doTick) => {
   await waitSharedWorkerTick(page)
 })
 
-test('worker emitted and import.meta.url in nested worker', async () => {
-  await untilUpdated(
-    () => page.textContent('.nested-worker'),
-    'pong http://localhost:3000/iife/sub-worker.js?worker_file'
+test('worker emitted and import.meta.url in nested worker (serve)', async () => {
+  expect(await page.textContent('.nested-worker')).toMatch('/worker-nested')
+  expect(await page.textContent('.nested-worker-module')).toMatch('/sub-worker')
+  expect(await page.textContent('.nested-worker-constructor')).toMatch(
+    '"type":"constructor"'
   )
 })
 
@@ -63,7 +64,7 @@ if (isBuild) {
   // assert correct files
   test('inlined code generation', async () => {
     const files = fs.readdirSync(assetsDir)
-    expect(files.length).toBe(12)
+    expect(files.length).toBe(13)
     const index = files.find((f) => f.includes('main-module'))
     const content = fs.readFileSync(path.resolve(assetsDir, index), 'utf-8')
     const worker = files.find((f) => f.includes('my-worker'))
@@ -82,6 +83,15 @@ if (isBuild) {
     expect(content).toMatch(`(window.URL||window.webkitURL).createObjectURL`)
     expect(content).toMatch(`window.Blob`)
   })
+
+  test('worker emitted and import.meta.url in nested worker (build)', async () => {
+    expect(await page.textContent('.nested-worker-module')).toMatch(
+      '"type":"module"'
+    )
+    expect(await page.textContent('.nested-worker-constructor')).toMatch(
+      '"type":"constructor"'
+    )
+  })
 }
 
 test('module worker', async () => {
@@ -94,3 +104,7 @@ test('classic worker', async () => {
   expect(await page.textContent('.classic-worker')).toMatch('A classic')
   expect(await page.textContent('.classic-shared-worker')).toMatch('A classic')
 })
+
+test('import.meta.globEager in worker', async () => {
+  expect(await page.textContent('.importMetaGlobEager-worker')).toMatch('["')
+})
diff --git a/packages/playground/worker/__tests__/sourcemap-hidden/sourcemap-hidden-worker.spec.ts b/packages/playground/worker/__tests__/sourcemap-hidden/sourcemap-hidden-worker.spec.ts
index 1797ac5269e411..e4cb3318ebd5f5 100644
--- a/packages/playground/worker/__tests__/sourcemap-hidden/sourcemap-hidden-worker.spec.ts
+++ b/packages/playground/worker/__tests__/sourcemap-hidden/sourcemap-hidden-worker.spec.ts
@@ -9,7 +9,7 @@ if (isBuild) {
   test('sourcemap generation for web workers', async () => {
     const files = fs.readdirSync(assetsDir)
     // should have 2 worker chunk
-    expect(files.length).toBe(24)
+    expect(files.length).toBe(26)
     const index = files.find((f) => f.includes('main-module'))
     const content = fs.readFileSync(path.resolve(assetsDir, index), 'utf-8')
     const indexSourcemap = getSourceMapUrl(content)
diff --git a/packages/playground/worker/__tests__/sourcemap-inline/sourcemap-inline-worker.spec.ts b/packages/playground/worker/__tests__/sourcemap-inline/sourcemap-inline-worker.spec.ts
index 89af0878213ab9..ceda7dae1fec7c 100644
--- a/packages/playground/worker/__tests__/sourcemap-inline/sourcemap-inline-worker.spec.ts
+++ b/packages/playground/worker/__tests__/sourcemap-inline/sourcemap-inline-worker.spec.ts
@@ -9,7 +9,7 @@ if (isBuild) {
   test('sourcemap generation for web workers', async () => {
     const files = fs.readdirSync(assetsDir)
     // should have 2 worker chunk
-    expect(files.length).toBe(12)
+    expect(files.length).toBe(13)
     const index = files.find((f) => f.includes('main-module'))
     const content = fs.readFileSync(path.resolve(assetsDir, index), 'utf-8')
     const indexSourcemap = getSourceMapUrl(content)
diff --git a/packages/playground/worker/__tests__/sourcemap/sourcemap-worker.spec.ts b/packages/playground/worker/__tests__/sourcemap/sourcemap-worker.spec.ts
index 24af73d5e3edfa..04cc079b4bc289 100644
--- a/packages/playground/worker/__tests__/sourcemap/sourcemap-worker.spec.ts
+++ b/packages/playground/worker/__tests__/sourcemap/sourcemap-worker.spec.ts
@@ -9,7 +9,7 @@ if (isBuild) {
   test('sourcemap generation for web workers', async () => {
     const files = fs.readdirSync(assetsDir)
     // should have 2 worker chunk
-    expect(files.length).toBe(24)
+    expect(files.length).toBe(26)
     const index = files.find((f) => f.includes('main-module'))
     const content = fs.readFileSync(path.resolve(assetsDir, index), 'utf-8')
     const indexSourcemap = getSourceMapUrl(content)
diff --git a/packages/playground/worker/classic-shared-worker.js b/packages/playground/worker/classic-shared-worker.js
index 8bd39e194f0618..e629208f05cf0a 100644
--- a/packages/playground/worker/classic-shared-worker.js
+++ b/packages/playground/worker/classic-shared-worker.js
@@ -4,3 +4,6 @@ self.onconnect = (event) => {
   const port = event.ports[0]
   port.postMessage(self.constant)
 }
+
+// for sourcemap
+console.log('classic-shared-worker.js')
diff --git a/packages/playground/worker/classic-worker.js b/packages/playground/worker/classic-worker.js
index 0700428ee0c80b..238857acf00a58 100644
--- a/packages/playground/worker/classic-worker.js
+++ b/packages/playground/worker/classic-worker.js
@@ -3,3 +3,6 @@ importScripts(`/${self.location.pathname.split("/")[1]}/classic.js`)
 self.addEventListener('message', () => {
   self.postMessage(self.constant)
 })
+
+// for sourcemap
+console.log("classic-worker.js")
diff --git a/packages/playground/worker/emit-chunk-dynamic-import-worker.js b/packages/playground/worker/emit-chunk-dynamic-import-worker.js
index f96e0b15d26497..9c3ede1faa2ed9 100644
--- a/packages/playground/worker/emit-chunk-dynamic-import-worker.js
+++ b/packages/playground/worker/emit-chunk-dynamic-import-worker.js
@@ -1,3 +1,6 @@
-import('./modules/module').then((module) => {
+import('./modules/module0').then((module) => {
   self.postMessage(module.default + import.meta.env.BASE_URL)
 })
+
+// for sourcemap
+console.log('emit-chunk-dynamic-import-worker.js')
diff --git a/packages/playground/worker/emit-chunk-nested-worker.js b/packages/playground/worker/emit-chunk-nested-worker.js
index 6cb72b9488cfaf..629322033f3d9b 100644
--- a/packages/playground/worker/emit-chunk-nested-worker.js
+++ b/packages/playground/worker/emit-chunk-nested-worker.js
@@ -26,3 +26,6 @@ import('./module-and-worker').then((res) => {
     data: res.module
   })
 })
+
+// for sourcemap
+console.log('emit-chunk-nested-worker.js')
diff --git a/packages/playground/worker/emit-chunk-sub-worker.js b/packages/playground/worker/emit-chunk-sub-worker.js
index 5d20becc781dd7..60d302e20bbb8a 100644
--- a/packages/playground/worker/emit-chunk-sub-worker.js
+++ b/packages/playground/worker/emit-chunk-sub-worker.js
@@ -6,3 +6,6 @@ Promise.all([
   const _data = { ...data[0], ...data[1], ...data[2] }
   self.postMessage(_data)
 })
+
+// for sourcemap
+console.log('emit-chunk-sub-worker.js')
diff --git a/packages/playground/worker/importMetaGlob.worker.js b/packages/playground/worker/importMetaGlob.worker.js
new file mode 100644
index 00000000000000..074a986c9bd808
--- /dev/null
+++ b/packages/playground/worker/importMetaGlob.worker.js
@@ -0,0 +1,8 @@
+const modules = import.meta.glob('./modules/*js')
+
+self.onmessage = function (e) {
+  self.postMessage(Object.keys(modules))
+}
+
+// for sourcemap
+console.log('importMetaGlob.worker.js')
diff --git a/packages/playground/worker/importMetaGlobEager.worker.js b/packages/playground/worker/importMetaGlobEager.worker.js
new file mode 100644
index 00000000000000..7947f65ab8c7f9
--- /dev/null
+++ b/packages/playground/worker/importMetaGlobEager.worker.js
@@ -0,0 +1,8 @@
+const modules = import.meta.globEager('./modules/*js')
+
+self.onmessage = function (e) {
+  self.postMessage(Object.keys(modules))
+}
+
+// for sourcemap
+console.log('importMetaGlobEager.worker.js')
diff --git a/packages/playground/worker/index.html b/packages/playground/worker/index.html
index 602aa3d06bfcac..b0c524305fc33e 100644
--- a/packages/playground/worker/index.html
+++ b/packages/playground/worker/index.html
@@ -40,11 +40,25 @@ <h2 class="format-iife">format iife:</h2>
 <code class="shared-worker-import-meta-url"></code>
 
 <p>
-  import NestedWorker from './worker-nested-worker?worker' - nested worker
+  import NestedWorker from './worker-nested-worker?worker' - import.meta.url
   <span class="classname">.nested-worker</span>
 </p>
 <code class="nested-worker"></code>
 
+<p>
+  import NestedWorker from './worker-nested-worker?worker' - nested module
+  worker
+  <span class="classname">.nested-worker-module</span>
+</p>
+<code class="nested-worker-module"></code>
+
+<p>
+  import NestedWorker from './worker-nested-worker?worker' - nested worker
+  constructor
+  <span class="classname">.nested-worker-constructor</span>
+</p>
+<code class="nested-worker-constructor"></code>
+
 <p>
   new Worker(new URL('./classic-worker.js', import.meta.url))
   <span class="classname">.classic-worker</span>
@@ -58,9 +72,22 @@ <h2 class="format-iife">format iife:</h2>
 </p>
 <code class="classic-shared-worker"></code>
 
+<p>
+  use import.meta.globEager in iife worker
+  <span class="classname">.importMetaGlobEager-worker</span>
+</p>
+<code class="importMetaGlobEager-worker"></code>
+
 <hr />
+
 <h2 class="format-es"></h2>
 
+<p>
+  use import.meta.glob in es worker
+  <span class="classname">.importMetaGlob-worker</span>
+</p>
+<code class="importMetaGlob-worker"></code>
+
 <p>
   worker emit chunk <br />
   module and worker:worker in worker file <br />
diff --git a/packages/playground/worker/module-and-worker.js b/packages/playground/worker/module-and-worker.js
index 659e556f08e4a6..036dcdf4edf11d 100644
--- a/packages/playground/worker/module-and-worker.js
+++ b/packages/playground/worker/module-and-worker.js
@@ -1,5 +1,8 @@
-import constant from './modules/module'
+import constant from './modules/module0'
 
 self.postMessage(constant)
 
 export const module = 'module and worker'
+
+// for sourcemap
+console.log('module-and-worker.js')
diff --git a/packages/playground/worker/modules/module.js b/packages/playground/worker/modules/module0.js
similarity index 100%
rename from packages/playground/worker/modules/module.js
rename to packages/playground/worker/modules/module0.js
diff --git a/packages/playground/worker/modules/module2.js b/packages/playground/worker/modules/module2.js
index 60447933b8b16e..70c0fc94586ffd 100644
--- a/packages/playground/worker/modules/module2.js
+++ b/packages/playground/worker/modules/module2.js
@@ -1,3 +1,3 @@
-export * from './module'
+export * from './module0'
 export * from './module1'
 export const msg2 = 'module2'
diff --git a/packages/playground/worker/modules/module3.js b/packages/playground/worker/modules/module3.js
index 33355423bc030e..65f7e274da3242 100644
--- a/packages/playground/worker/modules/module3.js
+++ b/packages/playground/worker/modules/module3.js
@@ -1,2 +1,2 @@
-export * from './module'
+export * from './module0'
 export const msg3 = 'module3'
diff --git a/packages/playground/worker/my-shared-worker.ts b/packages/playground/worker/my-shared-worker.ts
index cd5b24f265b955..caab5257394266 100644
--- a/packages/playground/worker/my-shared-worker.ts
+++ b/packages/playground/worker/my-shared-worker.ts
@@ -14,3 +14,6 @@ onconnect = (event) => {
     }
   }
 }
+
+// for sourcemap
+console.log('my-shared-worker.js')
diff --git a/packages/playground/worker/my-worker.ts b/packages/playground/worker/my-worker.ts
index dd6061885128c7..553754f4901030 100644
--- a/packages/playground/worker/my-worker.ts
+++ b/packages/playground/worker/my-worker.ts
@@ -6,3 +6,6 @@ self.onmessage = (e) => {
     self.postMessage({ msg, mode, bundleWithPlugin })
   }
 }
+
+// for sourcemap
+console.log('my-worker.js')
diff --git a/packages/playground/worker/possible-ts-output-worker.mjs b/packages/playground/worker/possible-ts-output-worker.mjs
index 25f1a447617cd9..db76614bc78267 100644
--- a/packages/playground/worker/possible-ts-output-worker.mjs
+++ b/packages/playground/worker/possible-ts-output-worker.mjs
@@ -5,3 +5,6 @@ self.onmessage = (e) => {
     self.postMessage({ msg, mode })
   }
 }
+
+// for sourcemap
+console.log('possible-ts-output-worker.mjs')
diff --git a/packages/playground/worker/sub-worker.js b/packages/playground/worker/sub-worker.js
index eff49dfbb46ba6..37d5d4effabb27 100644
--- a/packages/playground/worker/sub-worker.js
+++ b/packages/playground/worker/sub-worker.js
@@ -1,5 +1,8 @@
 self.onmessage = (event) => {
   if (event.data === 'ping') {
-    self.postMessage(`pong ${import.meta.url}`)
+    self.postMessage(`pong ${self.location.href}`)
   }
 }
+
+// for sourcemap
+console.log('sub-worker.js')
diff --git a/packages/playground/worker/url-shared-worker.js b/packages/playground/worker/url-shared-worker.js
index 3535d5c277ec84..9ef32c58f6c64b 100644
--- a/packages/playground/worker/url-shared-worker.js
+++ b/packages/playground/worker/url-shared-worker.js
@@ -1,6 +1,9 @@
-import constant from './modules/module'
+import constant from './modules/module0'
 
 self.onconnect = (event) => {
   const port = event.ports[0]
   port.postMessage(constant)
 }
+
+// for sourcemap
+console.log('url-shared-worker.js')
diff --git a/packages/playground/worker/url-worker.js b/packages/playground/worker/url-worker.js
index c25cbefdff89ec..1ba50225ee339d 100644
--- a/packages/playground/worker/url-worker.js
+++ b/packages/playground/worker/url-worker.js
@@ -1 +1,4 @@
-self.postMessage('A string' + import.meta.env.BASE_URL + import.meta.url)
+self.postMessage('A string' + import.meta.env.BASE_URL + self.location.url)
+
+// for sourcemap
+console.log('url-worker.js')
diff --git a/packages/playground/worker/worker-nested-worker.js b/packages/playground/worker/worker-nested-worker.js
index 6d4d1e4969005f..e74d1db760409b 100644
--- a/packages/playground/worker/worker-nested-worker.js
+++ b/packages/playground/worker/worker-nested-worker.js
@@ -8,6 +8,24 @@ self.onmessage = (event) => {
   }
 }
 
-subWorker.onmessage = (event) => {
-  self.postMessage(event.data)
+self.postMessage(self.location.href)
+
+subWorker.onmessage = (ev) => {
+  self.postMessage({
+    type: 'module',
+    data: ev.data
+  })
 }
+
+const classicWorker = new Worker(new URL('./url-worker.js', import.meta.url), {
+  type: 'module'
+})
+classicWorker.addEventListener('message', (ev) => {
+  self.postMessage({
+    type: 'constructor',
+    data: ev.data
+  })
+})
+
+// for sourcemap
+console.log('worker-nested-worker.js')
diff --git a/packages/playground/worker/worker/main-format-es.js b/packages/playground/worker/worker/main-format-es.js
index 801c13469151a3..e418c82a136927 100644
--- a/packages/playground/worker/worker/main-format-es.js
+++ b/packages/playground/worker/worker/main-format-es.js
@@ -1,5 +1,6 @@
 // run when format es
 import NestedWorker from '../emit-chunk-nested-worker?worker'
+import ImportMetaGlobWorker from '../importMetaGlob.worker?worker'
 
 function text(el, text) {
   document.querySelector(el).textContent = text
@@ -39,3 +40,11 @@ const moduleWorker = new Worker(
 moduleWorker.addEventListener('message', (ev) => {
   text('.module-and-worker-worker', JSON.stringify(ev.data))
 })
+
+const importMetaGlobWorker = new ImportMetaGlobWorker()
+
+importMetaGlobWorker.postMessage('1')
+
+importMetaGlobWorker.addEventListener('message', (e) => {
+  text('.importMetaGlob-worker', JSON.stringify(e.data))
+})
diff --git a/packages/playground/worker/worker/main-module.js b/packages/playground/worker/worker/main-module.js
index 417cf1728c4b09..6284ca63686e99 100644
--- a/packages/playground/worker/worker/main-module.js
+++ b/packages/playground/worker/worker/main-module.js
@@ -3,6 +3,7 @@ import InlineWorker from '../my-worker?worker&inline'
 import mySharedWorker from '../my-shared-worker?sharedworker&name=shared'
 import TSOutputWorker from '../possible-ts-output-worker?worker'
 import NestedWorker from '../worker-nested-worker?worker'
+import ImportMetaGlobEagerWorker from '../importMetaGlobEager.worker?worker'
 import { mode } from '../modules/workerImport'
 
 function text(el, text) {
@@ -56,6 +57,13 @@ const nestedWorker = new NestedWorker()
 nestedWorker.addEventListener('message', (ev) => {
   if (typeof ev.data === 'string') {
     text('.nested-worker', JSON.stringify(ev.data))
+  } else if (typeof ev.data === 'object') {
+    const data = ev.data
+    if (data.type === 'module') {
+      text('.nested-worker-module', JSON.stringify(ev.data))
+    } else if (data.type === 'constructor') {
+      text('.nested-worker-constructor', JSON.stringify(ev.data))
+    }
   }
 })
 nestedWorker.postMessage('ping')
@@ -83,3 +91,11 @@ w2.port.addEventListener('message', (ev) => {
   text('.shared-worker-import-meta-url', JSON.stringify(ev.data))
 })
 w2.port.start()
+
+const importMetaGlobEagerWorker = new ImportMetaGlobEagerWorker()
+
+importMetaGlobEagerWorker.postMessage('1')
+
+importMetaGlobEagerWorker.addEventListener('message', (e) => {
+  text('.importMetaGlobEager-worker', JSON.stringify(e.data))
+})
diff --git a/packages/vite/src/node/plugins/importAnalysisBuild.ts b/packages/vite/src/node/plugins/importAnalysisBuild.ts
index 9f4c75025fff27..ff315d008f57a5 100644
--- a/packages/vite/src/node/plugins/importAnalysisBuild.ts
+++ b/packages/vite/src/node/plugins/importAnalysisBuild.ts
@@ -87,8 +87,8 @@ function preload(baseModule: () => Promise<{}>, deps?: string[]) {
  */
 export function buildImportAnalysisPlugin(config: ResolvedConfig): Plugin {
   const ssr = !!config.build.ssr
-  const insertPreload = !(ssr || !!config.build.lib)
   const isWorker = config.isWorker
+  const insertPreload = !(ssr || !!config.build.lib || isWorker)
 
   const scriptRel = config.build.polyfillModulePreload
     ? `'modulepreload'`
@@ -123,11 +123,6 @@ export function buildImportAnalysisPlugin(config: ResolvedConfig): Plugin {
         return
       }
 
-      if (isWorker) {
-        // preload method use `document` and can't run in the worker
-        return
-      }
-
       await init
 
       let imports: readonly ImportSpecifier[] = []
@@ -159,6 +154,18 @@ export function buildImportAnalysisPlugin(config: ResolvedConfig): Plugin {
           source.slice(start, end) === 'import.meta' &&
           source.slice(end, end + 5) === '.glob'
         ) {
+          // es worker allow globEager / glob
+          // iife worker just allow globEager
+          if (
+            isWorker &&
+            config.worker.format === 'iife' &&
+            source.slice(end, end + 10) !== '.globEager'
+          ) {
+            this.error(
+              '`import.meta.glob` is not supported in workers with `iife` format, use `import.meta.globEager` instead.',
+              end
+            )
+          }
           const { importsString, exp, endIndex, isEager } =
             await transformImportGlob(
               source,
diff --git a/packages/vite/src/node/plugins/worker.ts b/packages/vite/src/node/plugins/worker.ts
index 4113b7153f9b35..5826980f5b0f72 100644
--- a/packages/vite/src/node/plugins/worker.ts
+++ b/packages/vite/src/node/plugins/worker.ts
@@ -58,6 +58,14 @@ function emitWorkerAssets(
   )
 }
 
+function emitWorkerSourcemap(
+  ctx: Rollup.TransformPluginContext,
+  config: ResolvedConfig,
+  asset: EmittedFile
+) {
+  return emitWorkerFile(ctx, config, asset, 'assets')
+}
+
 function emitWorkerChunks(
   ctx: Rollup.TransformPluginContext,
   config: ResolvedConfig,
@@ -138,14 +146,11 @@ function emitSourcemapForWorkerEntry(
       const contentHash = getAssetHash(content)
       const fileName = `${basename}.${contentHash}.js.map`
       const filePath = path.posix.join(config.build.assetsDir, fileName)
-      if (!context.cache.has(contentHash)) {
-        context.cache.set(contentHash, true)
-        context.emitFile({
-          fileName: filePath,
-          type: 'asset',
-          source: data
-        })
-      }
+      emitWorkerSourcemap(context, config, {
+        fileName: filePath,
+        type: 'asset',
+        source: data
+      })
 
       // Emit the comment that tells the JS debugger where it can find the
       // sourcemap file.
@@ -154,7 +159,10 @@ function emitSourcemapForWorkerEntry(
       if (config.build.sourcemap === true) {
         // inline web workers need to use the full sourcemap path
         // non-inline web workers can use a relative path
-        const sourceMapUrl = query?.inline != null ? filePath : fileName
+        const sourceMapUrl =
+          query?.inline != null
+            ? path.posix.join(config.base, filePath)
+            : fileName
         code += `//# sourceMappingURL=${sourceMapUrl}`
       }
     }
@@ -194,7 +202,6 @@ export async function workerFileToUrl(
 
 export function webWorkerPlugin(config: ResolvedConfig): Plugin {
   const isBuild = config.command === 'build'
-  const isWorker = config.isWorker
 
   return {
     name: 'vite:worker',
@@ -279,7 +286,7 @@ export function webWorkerPlugin(config: ResolvedConfig): Plugin {
     },
 
     renderChunk(code) {
-      if (isWorker && code.includes('import.meta.url')) {
+      if (config.isWorker && code.includes('import.meta.url')) {
         return code.replace('import.meta.url', 'self.location.href')
       }
     }