How to output variables from async.eachSeries function?

Question

Node.js

Good afternoon, there are 2 cycles with requests that form 2 arrays, I display them in two different callbacks, but I need to combine them into one after successfully processing one and the other, but I can’t get it out

async.eachSeries(result, function(item, callback2) {
      request.get("http://ws.audioscrobbler.com/2.0/?method=artist.getinfo&artist="+encodeURIComponent(item['artist'])+"&api_key=xxxx&format=json", function(err, res, body)
      {
        if(res.statusCode == 200 ) {     
          if(JSON.parse(body)['artist'] !== undefined) {
          	temp2.push({name: count2, number: JSON.parse(body)['artist']['image'][2]['#text']});		       
        	} 
        	else {
          	temp2.push({name: count2, number: false});
        	}
     			callback2();
     			count2++;
      	}
   			else {
          callback2('Error');
        }
            
      });    
    }, 
    function(err) {
      if( err ) {
        console.log('Ошибка случилась');
      } else {
        console.log('Все хорошо едем дальше');
        console.log(temp2);
      }
    });

And there is the same, only for YouTube, you need to eventually output two arrays from two cycles to form 1 array, please tell me in which direction to move

Answer 1

In the direction of Promise.all
For example something like this .

Answer 2

You still chose async. It will look terrible, but you can use caolan.github.io/async/docs.html#parallel. Sleep these two eachSeries in parallel, and where 'we go further' is displayed, call parallel'evskiy callbak with your array. At the end, when parallel completes, it will contain both of your arrays.
Written terribly, and in the code will look even worse. I categorically do not recommend you to use this ancient five-year-old approach. It's 2017, so it's time to take the courage to learn Promise and other goodies of modern javascript. Good advice here.

Answer 3

This is how I wrote it, in general, if this script is executed with if, then mysql crashes instantly

result.forEach(function(item){
  wp.song().search( item['artist']+' - '+item['song'] ).then(function( posts ) {
    if(!posts[0]){

      var myRequests = [];
      myRequests.push(rp({uri: "http://ws.audioscrobbler.com/2.0/?method=artist.getinfo&artist="+encodeURIComponent(item['artist'])+"&api_key=*****&format=json", json: true}));
      myRequests.push(rp({uri: "https://www.googleapis.com/youtube/v3/search?part=snippet&order=viewCount&q="+encodeURIComponent(item['artist']+'+'+item['song'])+"&type=video&key=***", json: true}));
      Promise.all(myRequests)
        .then((arrayOfHtml) => {
        	console.log(arrayOfHtml[0]['artist']['image'][2]['#text']);
          console.log(arrayOfHtml[1]['items'][0]['id'].videoId);


          wp.posts().create({
              title: item['artist']+' - '+item['song'],
              content: 'Your post content',
              status: 'publish'
          }).then(function( response ) {
              console.log( response.id );
          })

          
        })
        .catch(/* handle error */);


    }
  });
})`