posts.js

const fetch = require('node-fetch');

let posts = [];
let postsPromise = fetch('https://jsonplaceholder.typicode.com/posts')
    .then(resp => resp.json())
    .then(data => {
      posts = data.slice(5,15);
    });

let users = {};
let usersPromise = fetch('https://jsonplaceholder.typicode.com/users')
    .then(resp => resp.json())
    .then(data => {
      users = data.reduce((p, c) => {
        p[c.id] = c;
        return p;
      }, {});
    });

Promise
  .all([postsPromise, usersPromise])
  .then(responses => {
    //    console.log(posts, users);
    let table = posts.map(post => {
      console.log(`| ${users[post.userId].name} | ${users[post.userId].website} | ${post.title} |`);
    });
  });