serverless/lib/commands/plugin-management.js

import path from 'path'
import ServerlessError from '../serverless-error.js'

export default {
  validate({ serviceDir }) {
    if (!serviceDir) {
      throw new ServerlessError(
        'This command can only be run inside a service directory',
        'MISSING_SERVICE_DIRECTORY',
      )
    }
  },

  getServerlessFilePath({ serviceDir, configurationFilename }) {
    if (configurationFilename) {
      return path.resolve(serviceDir, configurationFilename)
    }
    throw new ServerlessError(
      'Could not find any serverless service definition file.',
      'MISSING_SERVICE_CONFIGURATION_FILE',
    )
  },

  getPluginInfo(name_) {
    let name
    let version
    if (name_.startsWith('@')) {
      ;[, name, version] = name_.split('@', 3)
      name = `@${name}`
    } else {
      ;[name, version] = name_.split('@', 2)
    }
    return { name, version }
  },
}