Can javascript have race condition?

For the following code in javascript I want to know if there are concurrent api requests to increment count is there any possibility of a race condition considering the fact that javascript is single threaded.

  app.post('/increment', async (req, res) => {
    await someAsyncFunction(); // Asynchronous operation
    count++; // Increment operation
    res.send('Count incremented');
  });

From what I understand there shouldn’t be any as once the execution resumes after await someAsyncFunction() count++ being synchronous should be executed in one stretch for a request before the execution resumes the increment for other requests. Let me know if I am wrong to understand this.