Edit: perf.js
'use strict' var log = require('npmlog') var EventEmitter = require('events').EventEmitter var perf = new EventEmitter() module.exports = perf var timings = {} process.on('time', time) process.on('timeEnd', timeEnd) perf.on('time', time) perf.on('timeEnd', timeEnd) function time (name) { timings[name] = Date.now() } function timeEnd (name) { if (name in timings) { perf.emit('timing', name, Date.now() - timings[name]) delete timings[name] } else { log.silly('timing', "Tried to end timer that doesn't exist:", name) } }
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