use a mutex within an async process in typescript

To use a mutex within an async process in Typescript, you can use the built-in Mutex class from the async-mutex library.

Here's an example of how to use a mutex in an async process:

index.ts
import { Mutex } from 'async-mutex';

const mutex = new Mutex();

async function myAsyncFunction() {
  // Wait for the mutex to be available
  const release = await mutex.acquire();

  try {
    // Execute critical section
    console.log('Executing critical section');
    await new Promise(resolve => setTimeout(resolve, 1000)); // Simulating some long-running task
  } finally {
    // Release the mutex
    release();
  }
}
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In the example above, myAsyncFunction is wrapped in a mutex to ensure that the critical section is executed by only one process at a time.

When a process awaits mutex.acquire(), it will wait until the mutex is available before continuing. Once inside the critical section, the process will execute its task. Finally, it releases the mutex by calling release(), allowing other processes to acquire it.

Note that using a mutex in an async process can come with certain limitations, such as the possibility of deadlocks. Careful use and understanding of the underlying concurrency primitives is important to ensure a reliable and safe system.