A node js script to show the latest version of the dependencies and devDependencies

pjson-dependency-versions.js

"use strict";

var shell = require("shelljs");
var fs = require("fs");

var pjson = JSON.parse(fs.readFileSync("./package.json"), "utf8");

function printDependencies(deps) {
  Object.keys(deps).forEach(function (name) {
    console.log(name, deps[name].version + " --> " + deps[name].latest);
  });
}

function getDependencyVersions(deps, cb) {
  var counter = 0;
  var depsData = {};
  var keys = Object.keys(deps).sort();
  keys.forEach(function (key) {
    shell.exec("npm show " + key + " version", {silent: true}, function (code, output) {
      counter++;
      depsData[key] = {
        version: deps[key],
        latest: output.trim()
      };
      if (counter === keys.length) {
        cb(depsData);
      }
    });
  });
}

getDependencyVersions(pjson.dependencies, printDependencies);
getDependencyVersions(pjson.devDependencies, printDependencies);