npm-check-unused/lib/in/index.js

Check unused dependencies.

'use strict'
const co = require('co')
const merge = require('merge-options')
const ora = require('ora')
const getUnusedPackages = require('./get-unused-packages')
const createPackageSummary = require('./create-package-summary')

module.exports = function (currentState) {
  return co(function * () {
    yield getUnusedPackages(currentState)

    const spinner = ora(`Checking npm registries.`)
    spinner.enabled = spinner.enabled && currentState.get('spinner')
    spinner.start()

    const cwdPackageJson = currentState.get('cwdPackageJson')

    function dependencies (pkg) {
      if (currentState.get('ignoreDev')) {
        return pkg.dependencies
      }

      if (currentState.get('devOnly')) {
        return pkg.devDependencies
      }

      return merge(pkg.dependencies, pkg.devDependencies)
    }

    const allDependencies = dependencies(cwdPackageJson)
    const allDependenciesIncludingMissing = Object.keys(merge(allDependencies, currentState.get('missingFromPackageJson')))

    const arrayOfPackageInfo = yield allDependenciesIncludingMissing
      .map(moduleName => createPackageSummary(moduleName, currentState))
      .filter(Boolean)

    currentState.set('packages', arrayOfPackageInfo)

    spinner.stop()
    return currentState
  })
}