# @babel/cli # @babel/node # babel-jest # babel-polyfills [babel-polyfills](https://github.com/babel/babel-polyfills) # @babel/plugin-external-helpers > This plugin contains helper functions that’ll be placed at the top of the generated code See our website[@babel/plugin-external-helpers](https://babeljs.io/docs/en/next/babel-plugin-external-helpers.html)for more information.