Validate ES2015 constants
$ npm install babel-plugin-check-es2015-constants.babelrc
{
"plugins": ["check-es2015-constants"]
}$ babel --plugins check-es2015-constants script.jsrequire("babel-core").transform("code", {
plugins: ["check-es2015-constants"]
});This check will only validate consts. If you need it to compile down to var then you must also install and enable transform-es2015-block-scoping.