cannot redeclare block scoped variable postMessage()

🔎 Search Terms

"cannot redeclare block scope variable postMessage typescript"

🕗 Version & Regression Information

TS version: ^5.1.6

⏯ Playground Link

Can't use workers in Playground

💻 Code

const worker = new SharedWorker(new URL('./worker.js', import.meta.url))

/* ... */

worker.port.addEventListener('message', e => {
     if (!e.data?.type) {
          return
      }

      switch (e.data.type) {
          case 'get_tabs': {
               worker.port.postMessage({ //Error here
                   type: 'share_tab_id',
                   tab_id: tabId
               })
          }

    /* ... */

🙁 Actual behavior

I'm getting a Cannot redeclare block-scoped variable 'postMessage' error coming from TypeScript itself. I checked the file (lib.dom.d.ts) and it looks like the postMessage variable is getting declared twice

🙂 Expected behavior

Expect to have single declaration of postMessage and no error.

Additional information about the issue

I'm using a monorepo with NPM workspaces. Each module has a separate tsconfig.json and are built separately

Beginne mit dem SharedWorker-Beispiel und den separaten tsconfig.json-Dateien im NPM-workspaces-Monorepo. Untersuche die doppelten postMessage-Deklarationen in lib.dom.d.ts und ermittle, warum sie in dasselbe TypeScript-Programm gelangen; verifiziere die Korrektur, indem du die betroffenen Module neu baust und bestätigst, dass die Diagnose verschwunden ist.