Variable scopes

[wolfgang42]

Currently rockstar-js treats all varables as global. Per spec:

If a variable is defined outside of a function, it is in global scope. Global scope variables are available everywhere below its first initialization. If a variable is defined inside of a function, it is in local scope. Local scope variables are available from their initialization until the end of the function they are defined in.

While within a function, if you write to a variable that has been defined in global scope, you write to that variable, you do not define a new local variable.