That probably won't work when you switch from Babel=>ES5 to Babel=>ES6 (http://www.2ality.com/2015/07/es6-module-exports.html?m=1 http://www.2ality.com/2015/07/

That probably won't work when you switch from Babel=>ES5 to Babel=>ES6 (http://www.2ality.com/2015/07/es6-module-exports.html?m=1 http://www.2ality.com/2015/07/es6-module-exports.html?m=1) as ES6 bindings are immutable bindings to the actual values in the module instead of copies.