Replaces __DEV__ with process.env.NODE_ENV !== 'production'.
$ npm install babel-plugin-dev.babelrc
{
"plugins": ["dev"]
}$ babel --plugins dev script.jsrequire("babel-core").transform("code", {
plugins: ["dev"]
});$ git clone https://github.com/Zenwolf/babel-plugin-dev.git
$ cd babel-plugin-dev
$ npm install
$ npm test