I’m super not embarrassed to admit that I just learned:
ES6 arrow functions do not have their own `this`. They inherit `this` for free without having to do `.bind` or `self = this`. 
No, e.g. `var` is not block-scoped and would be hoisted outside of the block in that case. It would not be hoisted outside a function or arrow function.
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Huh, okay. But `let` would be scoped in there?
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Those, and `this`, are not special-cased or anything — it’s just that arrow functions don’t create a new function scope.