I struggled the same with another ES6-first library. The best way to convert those to ES5 is via copy / pasting the code in https://babeljs.io/repl/ https://bab

I struggled the same with another ES6-first library. The best way to convert those to ES5 is via copy / pasting the code in https://babeljs.io/repl/ https://babeljs.io/repl/. After a while, you'll quickly learn the syntax and the code will come naturally.