trainingproject/problems/12-dist-tag-removal/index.js

A module to teach you how to module.

var path = require('path')
var reg = require('../../lib/registry.js')
var shop = require('../../')

exports.problem = {
  file: path.join(__dirname, 'problem.{lang}.txt')
}

exports.init = function (workshopper) {
  this.__ = workshopper.i18n.__
  reg.run('dist-tag')
}

exports.verify = function (args, cb) {
  var cwd = shop.cwd()
  if (!cwd) return cb(false)

  var __ = this.__
  var pkg = require(path.join(cwd, 'package.json'))
  var name = pkg.name

  var body = require(path.join(shop.datadir, 'registry', name, 'body.json'))
  var dt = body['dist-tags']
  var tags = Object.keys(dt)
  if (tags.length > 1) {
    console.log(__('dist-tag-removal.too_many'))
    return cb(false)
  }

  var time = body.time
  var mostRecentTime = ''
  var mostRecentVersion
  for (var v in time) {
    if (!body.versions[v]) continue
    if (time[v] > mostRecentTime) {
      mostRecentTime = time[v]
      mostRecentVersion = v
    }
  }

  if (dt.latest === mostRecentVersion) {
    console.log(__('dist-tag-removal.version_mismatch', {version: mostRecentVersion}))
    return cb(false)
  }

  reg.kill()
  return cb(null, true, {
    file: path.join(__dirname, 'success.{lang}.txt')
  })
}