Function newSemaphore

Example

const semaphore = newSemaphore(2);

// Acquire a permit manually
const permit = await semaphore.acquire();
try {
  // Critical section - permit is automatically managed
  await fetch('/api/data');
} finally {
  permit.release();
}

// Or use with automatic resource management
await using permit = await semaphore.acquire();
// Critical section - permit automatically released at end of scope
await fetch('/api/data');

// Or use the run helper
await semaphore.run(async () => {
  // Critical section - permit automatically managed
  return await fetch('/api/data');
});
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