I prefer it for 1) Less tokens: less noise, more signal. `a + b` is the important part, let's not obscure it. 2) Lexical `this` binding. 3) Shorter and less

I prefer it for 1) Less tokens: less noise, more signal. `a + b` is the important part, let's not obscure it. 2) Lexical `this` binding. 3) Shorter and less likely to line-break. 4) No hoisting when used with let and const 5) Actually const when used with const. const module exports are faster.