run an N|Solid profile on your startup code

nsolid-profile-at-startup.js

'use strict'

// Use this module as in the following command, to profile the startup code:
//   nsolid --require ./profile-at-startup nsolid-storage

const path = require('path')

const program = path.basename(__filename).replace(/\.js$/, '')

let nsolid

run()

// run main code as a function so we can early return
function run () {
  try {
    nsolid = require('nsolid')
  } catch (err) {
    log('Y U NOT USING N|Solid? SAD! https://nodesource.com/products/nsolid')
    return
  }

  global.nsolidProfileStart = nsolidProfileStart
  global.nsolidProfileStop = nsolidProfileStop

  nsolidProfileStart()
  setTimeout(nsolidProfileStop, 5000)
}

// this function gets globally installed!
function nsolidProfileStart () {
  log('starting profile')
  nsolid.profile(onProfileStarted)
}

// this function gets globally installed!
function nsolidProfileStop () {
  log('stopping profile')
  nsolid.profileEnd(onProfileEnded)
}

function onProfileStarted (err, data) {
  log('profile started', err || '')
}

function onProfileEnded (err, data) {
  log('profile ended', err || '')
}

// log a message
function log (message) {
  console.error(`${new Date().toISOString()} ${program}: ${message}`)
}