NodeOsInfo.js

const os = require('os');

const allInfo = Object.keys(os);

const isOsFunction = (item) => typeof os[item] === "function";
const getinfo = (info) => ({[info]: os[info]()});

const logItem = (item) => {
    console.log(JSON.stringify(item,null,2));
    return item;
}

console.log("Show functions result:");
allInfo.filter(isOsFunction).map(getinfo).map(logItem);