rocket.chat.mqtt/node_modules/npm/lib/install/module-staging-path.js

It's a MQTT Server, using redis to scale horizontally.

'use strict'
var uniqueFilename = require('unique-filename')
var moduleName = require('../utils/module-name.js')

module.exports = moduleStagingPath
function moduleStagingPath (staging, pkg) {
  return uniqueFilename(staging, moduleName(pkg), pkg.realpath)
}