fix(worker): resolve WebKit compat with inline workers by deferring blob URL revocation (#20460)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: sapphi-red <49056869+sapphi-red@users.noreply.github.com> Co-authored-by: 翠 <green@sapphi.red>

Author: Copilot

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

@@ -292,8 +292,9 @@ export function webWorkerPlugin(config: ResolvedConfig): Plugin {
  workerConstructor === 'Worker'
  ? `${jsContent}
  const blob = typeof self !== "undefined" && self.Blob && new Blob([${
+ // NOTE: Revoke the objURL after creating the worker, otherwise it breaks WebKit-based browsers
  workerType === 'classic'
- ? ''
+ ? `'(self.URL || self.webkitURL).revokeObjectURL(self.location.href);',`
  : // `URL` is always available, in `Worker[type="module"]`
  `'URL.revokeObjectURL(import.meta.url);',`
  }jsContent], { type: "text/javascript;charset=utf-8" });
@@ -312,14 +313,6 @@ export function webWorkerPlugin(config: ResolvedConfig): Plugin {
  'data:text/javascript;charset=utf-8,' + encodeURIComponent(jsContent),
  ${workerTypeOption}
  );
- }${
- // For module workers, we should not revoke the URL until the worker runs,
- // otherwise the worker fails to run
- workerType === 'classic'
- ? ` finally {
- objURL && (self.URL || self.webkitURL).revokeObjectURL(objURL);
- }`
- : ''
  }
  }`
  : `${jsContent}