const Utils = require("./util.js") class Perf { constructor() { this.init(); } init() { this.perf = []; this.ts = new Date().getTime(); } profile(event) { const ts = new Date().getTime(); this.perf.push(`${event}: ${ts - this.ts}ms`); } dump() { Utils.log(`${JSON.stringify(this.perf)}`); } } module.exports = new Perf();