There's no need unless you need runtime-only concepts, like new string methods. Use https://babeljs.io/ https://babeljs.io/ to turn nice es6 into es5. (I imagin

There's no need unless you need runtime-only concepts, like new string methods. Use https://babeljs.io/ https://babeljs.io/ to turn nice es6 into es5. (I imagine you already know this, if you're using react/jsx)