fix(worker): replace import.meta correctly for IIFE worker (#15321)

Co-authored-by: 翠 / green <green@sapphi.red>

Author: XiSenao

Diff for: packages/vite/src/node/plugins/worker.ts

@@ -165,10 +165,21 @@ export async function workerFileToUrl(
 export function webWorkerPostPlugin(): Plugin {
   return {
     name: 'vite:worker-post',
-    resolveImportMeta(property, { chunkId, format }) {
+    resolveImportMeta(property, { format }) {
       // document is undefined in the worker, so we need to avoid it in iife
-      if (property === 'url' && format === 'iife') {
-        return 'self.location.href'
+      if (format === 'iife') {
+        // compiling import.meta
+        if (!property) {
+          // rollup only supports `url` property. we only support `url` property as well.
+          // https://github.com/rollup/rollup/blob/62b648e1cc6a1f00260bb85aa2050097bb4afd2b/src/ast/nodes/MetaProperty.ts#L164-L173
+          return `{
+            url: self.location.href
+          }`
+        }
+        // compiling import.meta.url
+        if (property === 'url') {
+          return 'self.location.href'
+        }
       }
 
       return null

Diff for: playground/worker/__tests__/iife/iife-worker.spec.ts

@@ -114,17 +114,17 @@ describe.runIf(isBuild)('build', () => {
 test('module worker', async () => {
   await untilUpdated(
     async () => page.textContent('.worker-import-meta-url'),
-    /A\sstring.*\/iife\/.+url-worker\.js/,
+    /A\sstring.*\/iife\/.+url-worker\.js.+url-worker\.js/,
     true,
   )
   await untilUpdated(
     () => page.textContent('.worker-import-meta-url-resolve'),
-    /A\sstring.*\/iife\/.+url-worker\.js/,
+    /A\sstring.*\/iife\/.+url-worker\.js.+url-worker\.js/,
     true,
   )
   await untilUpdated(
     () => page.textContent('.worker-import-meta-url-without-extension'),
-    'A string',
+    /A\sstring.*\/iife\/.+url-worker\.js.+url-worker\.js/,
     true,
   )
   await untilUpdated(

Diff for: playground/worker/url-worker.js

@@ -3,6 +3,7 @@ self.postMessage(
     'A string',
     import.meta.env.BASE_URL,
     self.location.url,
+    import.meta && import.meta.url,
     import.meta.url,
   ].join(' '),
 )