CODEWITHSUNDEEP
javascriptmeteorpromiseasync-await
max li
max li

Reputation: 2467

undefined with promise async / await

Can anyone tell me whats wrong with the code when calling promise with map? I get undefined output. P.S this is for meteor.

async function getResUrl(item, url){

  let res = await HTTP.call("GET", url, function(err, res){
    return res.statusCode;
  });
  console.log(res);
  return res;
}

function getUrlRes(_screenName) {

  let getRes = Promise.all(_.map(Object.keys(social), function(item){
    let url = social[item]+"/"+_screenName;

    getResUrl(item, url);

  })).then(function(result){
    return result
  });

return getRes;
}

Upvotes: 0

Views: 2359

Answers (1)

jfriend00
jfriend00

Reputation: 707856

Assuming getResUrl() returns a promise, change this:

getResUrl(item, url);

to

return getResUrl(item, url);

You have to return the promise so map() can accumulate the promises.

It looks like you also may need to properly promisify HTTP.call() so that it returns a promise.

Upvotes: 3

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