()
| 33 | }); |
| 34 | |
| 35 | function dequeue() { |
| 36 | if (current < concurrency) { |
| 37 | const task = tasks.shift(); |
| 38 | |
| 39 | if (task) { |
| 40 | current += 1; |
| 41 | const promise = Promise.resolve(task.fn()); |
| 42 | |
| 43 | void promise |
| 44 | .then(task.fulfil, (err) => { |
| 45 | task.reject(err); |
| 46 | reject(err); |
| 47 | }) |
| 48 | .then(() => { |
| 49 | current -= 1; |
| 50 | dequeue(); |
| 51 | }); |
| 52 | } else if (current === 0) { |
| 53 | closed = true; |
| 54 | fulfil(); |
| 55 | } |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | return { |
| 60 | /** @param {() => any} fn */ |