elint/src/lib/npm-install.js

'use strict'

const debug = require('debug')('elint:lib:npmInstall')
const _ = require('lodash')
const exec = require('./exec')
const parse = require('../utils/parse-npm-option')

/**
 * @typedef InstallOptions
 * @property {string} prefix 安装路径
 * @property {string} registry npm 仓库
 * @property {boolean} saveDev --save-dev
 */

/**
 * npm install
 *
 * @param {Array<string>|string} names package name
 * @param {InstallOptions} options install options
 * @returns {Promise} promise
 */
function npmInstall (names, options) {
  const parsedNames = Array.isArray(names) ? names : [names]
  const parsedOptions = []

  // 兼容 node v6
  _.toPairs(options).forEach(([option, value]) => {
    if (value === false) {
      return
    }

    parsedOptions.push(parse(option))

    if (typeof value === 'string') {
      parsedOptions.push(value)
    }
  })

  if (options.prefix) {
    parsedOptions.unshift('--global')
  }

  const argus = [
    'install',
    ...parsedNames,
    ...parsedOptions
  ]

  debug(`run "npm ${argus.join(' ')}"`)

  return exec('npm')(...argus)
}

module.exports = npmInstall