Reading long lines is also difficult. To me some parts of FE development kind of require deep nesting, e.g. css, but in javascript if you are 4/5 levels deep i

Reading long lines is also difficult. To me some parts of FE development kind of require deep nesting, e.g. css, but in javascript if you are 4/5 levels deep in the nest (with the "long lines symptom"), then you should do as proposed in the article: split into modules and functions. And sometimes (often?) long lines comes from the bad habit to do 3/4 things in one statement. To me good code does exactly one thing per statement, and except for config or urls, is should not be long.