Nodejs - async - parallel - limit callback is not a function

Question

I got this error after running the code below. Can anyone help?

TypeError: callback is not a function

api_call_arr.push(async function(callback) {
  let api_result = await apiHelper.makeAPI('post', api_data);
  if (api_result.Errors !== undefined) {
    console.log('success 1');
  } else {
    console.log('error 1');
  }
  callback(null, true);
});
async.parallelLimit(api_call_arr, 5, function(err, data) {
  console.log(err);
});

Answer 1

Using the async operator before your function turns it into a promise . I guess that the async lib is not handling this yet. You can remove the async keyword and do something like

 apiHelper.makeAPI(...)
        .then((result) => callback(null, result.Errors !== undefined))
        .catch((err) => callback(err, false)))