- babel-core: The core module that wraps everything in our transform api (used for integrations)
- babel-generator: Prints a string from an AST
- babel-types: Babel Types is a Lodash-esque utility library for AST nodes
- babel-register: The require hook will bind itself to node's require and automatically compile files on the fly.
- babel-template: Generate an AST from a string template
- babel-helpers: Collection of helper functions used by Babel transforms
- babel-code-frame: Generate errors that contain a code frame that point to source locations