Babel command line.
In addition, various entry point scripts live in the top-level package at babel-cli/bin.
There are some shell-executable utility scripts, babel-external-helpers.js and babel-node.js, and the main Babel cli script, babel.js.
npm install --save-dev babel-cli
babel script.js
For more in depth documentation see: http://babeljs.io/docs/usage/cli/