var {VK} = require('vk-io');
var fs = require('fs');

const vk = new VK();

var friends = [], global_arr = [];

vk.token = ""
var your_id = 90327755

async function run(user_id) {
    const response = await vk.api.friends.get({
        user_id: user_id,
        fields: 'nickname,domain,sex,bdate,city,country,timezone,photo_50,photo_100,photo_200_orig,has_mobile,contacts, education,online,relation,last_seen,status,can_write_private_message,can_see_all_posts,can_post,universities',
        v: 5.92
    });
    global_arr.push(response.items)
    console.log('new friend')
}

async function my_friends(user_id) {
  const response = await vk.api.friends.get({
      user_id: user_id,
      v: 5.92
  });
  friends = response.items;
  for(var i in friends){
    setTimeout(run, 3000, friends[i])
    if(i === friends.length-1){
      fs.writeFile('myjsonfile.json', JSON.stringify(global_arr), 'utf8', () => {
        console.log('Успешно!')
      });
    }
  }
}

my_friends(your_id).catch(console.log);