Absolutely! I agree that one can write confusing/poor code in just about any language out there. But I didn’t try to highlight how horrible ES6 is..In fact I us

Absolutely! I agree that one can write confusing/poor code in just about any language out there. But I didn’t try to highlight how horrible ES6 is..In fact I used ES6 features in the modified version of the original reducer’s code. The main point of the article was in that using new JS features blindly may cause the significant problems, not with readability, but with the script size and the running time of the code after it’s transplied to ES5. And it has to be transplied because it’s using ES7 features which even not in the specification.