It is an tool of measuring performance of time, CPU, RAM and heap of javascript code
$ npm install --save js-meter
**const jm = require('js-meter')**const isPrint = trueconst isKb = true // or Mb
**const m = new jm({isPrint, isKb})**for(var i=0; i<10000; i++){Math.random()}
const meter = m.stop()
// RAM : 1080 kb// HeapTotal : 1024 kb// HeapUsed : -7.2265625 kb// External : 0 kb// CPU : 3.344 ms// Spend time : 1004 ms
https://github.com/wahengchang/js-meter/blob/master/example.js