Getting 'responde finished' state as a callback

[newmandani]

As NodeJS and this particular API is async I'm trying to make fetching procedure 'end' state but have no experience enough and can't find a right way. Can you show me the right way to do so with current API?

async.parallel({
    readCrunch: function(cb, results) {
        console.log('\r\nStart Crunchbase Categories fetching...');
        crunchCatsLoad({page: 1}, crunchCatsList);
        return cb(crunchCatsList);
    }
}, function (err, results) {
    if(results) {
        console.log(results,' crunchbase Categories fetched.');
        console.log('Why you are "undefined"?');
    } 
    if (err) {
        console.log('ERRR: ', err);
    }
});

var crunchCatsLoad = function(query, arrayReturn) {
    var catsArray = [];
    crunchbase.categories( { page: query.page }, function(error, cats) {

        if (cats) {
            var items = cats.data.items;
            var next_page_url = cats.data.paging.next_page_url;

            items.forEach( function(category, i) {
                catsArray.push({
                // some code
                });
            });

            if ( next_page_url !== null ) {
                query.page++;
                console.log('Getting page ', query.page);
                crunchCatsLoad({ page: query.page }, arrayReturn);
            } else {
                arrayReturn = catsArray;
                console.log(catsArray.length, ' Crunchbase cats fetched.');
                return arrayReturn;
            }
        }
    });
};

Hope to hear an advice or best practice from you.

[RichardCzechowski]

I think there is only one page of categories. You may want to try this on the 'people' endpoint.

[newmandani]

You are right, Richard. But is it a reason why "function (err, results)" fired before whole list loading?

[RichardCzechowski]

I think there is a problem in your callback. You are returning 'crunchCatsList' as the first argument in the callback (err) rather than the second (results).
Try changing this-
return cb(crunchCatsList);

to this-
cb(null, crunchCatsList);

[RichardCzechowski]

What is the exact output you are getting?

[newmandani]

It's "undefined". You can see it's output here. server.1.js