really begin/end is just a way to pass several expressions where you normally need to pass only one. In this way I think it's much closer to something like conditionals (e.g. if, than to do).

Aside to global and local scope there is also something one could call a “block” scope. This is not an “official” type of scope, but it does exist. Block scope was introduced to JavaScript as a part of the ES6 specification. It was introduced along with two new types of variables let and const.

In javascript prettier-ignore ignores the next block, so what I did was just make the next few lines a block.