os.cpus() for node and the browser
Returns an array of objects containing information about each CPU/core installed: model, speed (in MHz), and times (an object containing the number of milliseconds the CPU/core spent in: user, nice, sys, idle, and irq).
See the node.js documentation for
os.cpus().
In the browser, the navigator.hardwareConcurrency API is used, when available.
npm install cpus
var cpus = require('cpus')
console.log(cpus().length) // 4
MIT. Copyright (C) Feross Aboukhadijeh.