Configurable "search and replace" plugin. Replaces matching nodes in the tree with a given replacement node. For example you can replace `process.NODE_ENVwith
"production"`.
Loads environment variables from .env.[development|test|production][.local]
files
Inline the `NODE_ENV` environment variable and evaluate it if possible
A simple way to manage environment variables on a per-project basis
A plugin for Babel v6 which replaces __DEV__
with the result of evaluating `'production' !== process.env.NODE_ENV`.