if performance? and performance.now module.exports = -> performance.now() else if process? and process.hrtime module.exports = -> (getNanoSeconds() - nodeLoadTime) / 1e6 hrtime = process.hrtime getNanoSeconds = -> hr = hrtime() hr[0] * 1e9 + hr[1] moduleLoadTime = getNanoSeconds() upTime = process.uptime() * 1e9 nodeLoadTime = moduleLoadTime - upTime else if Date.now module.exports = -> Date.now() - loadTime loadTime = Date.now() else module.exports = -> new Date().getTime() - loadTime loadTime = new Date().getTime()