Running async operations in parallel and harvesting the results. Concurrency limit applied incorrectly

[parallel-promises]-take3-subtake0.js

async function take3subtake0() {
  const concurrencyLimit = 5;
  let results = [];
  const batchesCount = Math.ceil(numberOfOperations / concurrencyLimit);

  // Running Promises in parallel in batches
  for (let i = 0; i < batchesCount; i++) {
    const batchStart = i * concurrencyLimit;
    const batchArguments = listOfArguments.slice(batchStart, batchStart + concurrencyLimit);
    const batchPromises = batchArguments.map(asyncOperation);
    // Harvesting
    const batchResults = await Promise.all(batchPromises);
    results = results.concat(batchResults);
  }
  return results;
}