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Joe Savona
bfb7d2bfbd
JavaScript has ~sane~ fun rules around where variables can be redeclared or not, and which kinds of variables this applies to. Actually the rules are pretty straightforward: * `var` can be redeclared any number of times. * In strict mode, other declarations cannot be redeclared within the same scope. This implies that a `var` declaration cannot conflict with these other forms, which must take into account hoisting. So you can't have a `var a; let a` in the same scope, but you also can't have a `let a` at a scope and then a `var a` which will hoist to that same scope.