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async.queue with async arrow function without callback doesn't work

See original GitHub issue

What version of async are you using? 3.2.0

Which environment did the issue occur in (Node/browser/Babel/Typescript version) Node.js

What did you do? Please include a minimal reproducible case illustrating issue.

// Some code has been abbreviated for legibility

// Cleanup lingering test data
before(async () => {
  const docs = await cosmosClient.queryAll(...);

  const q = async.queue(async (task) => {
    await cosmosClient.deleteItem(;
  }, 10);

  q.push(, idx) => ({ doc, idx })));
  await q.drain();

What did you expect to happen? all documents added to queue to be processed and for test suite to continue

What was the actual result? only first 10 documents are processed and then Node.js exists after a bit of time.

Issue Analytics

  • State:closed
  • Created 3 years ago
  • Reactions:1
  • Comments:7

github_iconTop GitHub Comments

aearlycommented, Jan 12, 2021

Yep, that’s correct. If you’re using a recent version of Node (> 8.x), you can probably set TS’s target to preserve async functions/

silveojcommented, Feb 5, 2021

I set in tsconfig.json (or higher)

    "target": "es2017",
    "lib": ["es2017", "DOM"],
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