sherry/lib/PluginAPI.js

const { chalk } = require('sherry-utils')

module.exports = class PluginAPI {
  constructor(sherry) {
    this.sherry = sherry
    this.peerDependencies = []
  }

  registerPluginAPI(name, handler) {
    /* eslint-disable no-proto */
    this.__proto__[name] = handler
    /* eslint-enable no-proto */
  }

  registerCommand(fn) {
    fn && fn(this.sherry.cli)
  }

  registerPeerDependencies(name, dependencies) {
    this.peerDependencies.push({
      name,
      dependencies
    })
  }

  _checkEnv() {
    let exceptionLog = ''

    for (const { name: plginName, dependencies } of this.peerDependencies) {
      const checkResponse = checkDependencies(dependencies)
      for (const name of Object.keys(checkResponse)) {
        const { code, required, actual } = checkResponse[name]
        if (code === 'NOT_INSTALLED') {
          exceptionLog += `[${plginName}] requires ${chalk.yellow(`${name} (${required})`)} to be installed.\n`
        }
        if (code === 'IMCOMPTIBLE') {
          exceptionLog += `[${plginName}] requires ${chalk.yellow(`${name} (${required})`)}, but detect an imcompatible version ${chalk.yellow(actual)}\n`
        }
      }
    }

    return exceptionLog
  }
}

function checkDependencies(dependencies) {
  const { semver } = require('sherry-utils')
  const result = {}
  let actualVersion
  let pkgJsonPath
  for (const name of Object.keys(dependencies)) {
    const requiredVersion = dependencies[name]
    try {
      pkgJsonPath = require.resolve(`${name}/package.json`)
    } catch (e) {
      result[name] = {
        code: 'NOT_INSTALLED',
        required: requiredVersion
      }
    }
    if (pkgJsonPath) {
      actualVersion = require(pkgJsonPath).version
      if (semver.satisfies(actualVersion, requiredVersion)) {
        result[name] = {
          code: 'PASS_CHECK'
        }
      } else {
        result[name] = {
          code: 'IMCOMPTIBLE',
          required: requiredVersion,
          actual: actualVersion
        }
      }
    }
  }
  return result
}

module.exports.checkDependencies = checkDependencies