@xervo/cli/lib/common/verifyPackage.js

The command line interface for deploying applications to the Xervo hosting platform.

var fs = require('fs')
var util = require('util')

var async = require('async')
var findFileSync = require('find-file-sync')

function checkStartScript (meta, done) {
  var fatalBlackList = ['forever', 'pm2', 'nodemon']
  var matches = []

  if (!meta.scripts || !meta.scripts.start) return done(null, matches)

  fatalBlackList.forEach(function (check) {
    if (meta.scripts.start.match(new RegExp(check, 'g'))) {
      matches.push({
        level: 'FATAL',
        message: util.format([
          'Your application is currently configured to run using %s,',
          'which is not supported on Xervo. Please change your start script to simply start',
          'the application and we\'ll handle the rest.\n'
        ].join('\n'), check.red)
      })
    }
  })

  done(null, matches)
}

function checkDependencies (meta, done) {
  var matches = []
  var dependencies = meta.dependencies

  if (!meta.dependencies) return done(null, matches)

  Object.keys(dependencies).forEach(function (dep) {
    if (dependencies[dep] === '*') {
      matches.push({
        level: 'WARN',
        message: util.format([
          'The dependency %s is configured with the version %s, which may cause',
          'issues if the module is updated with breaking changes. You should change this to a',
          'more specific version.\n'
        ].join('\n'), dep.red, '"*"'.red)
      })
    }
  })

  done(null, matches)
}

module.exports = function (packagePath, done) {
  var metaPath
  var meta

  if (!packagePath) return done(null)

  metaPath = findFileSync(packagePath, 'package.json', ['.git', 'node_modules'])

  try {
    meta = JSON.parse(fs.readFileSync(metaPath), 'utf8')
  } catch (e) {
    return done(null)
  }

  async.series([
    function (next) {
      checkDependencies(meta, next)
    },
    function (next) {
      checkStartScript(meta, next)
    }
  ],
  function (err, results) {
    done(err, results[0].concat(results[1]))
  })
}