Medium-AST-12.js

// global scope
let global = "This is global scope"
function foo(){
    // inner scope 1
    let scope1 = "This is inner scope 1"
    function bar(){
        // inner scope 2
        let scope2 = "This is inner scope 2"
        scope1 = "Updating the reference in inner scope 1"
        function baz(){
            // inner scope 3
            let scope2 = 'This is inner scope 3 and does not affect the one in inner scope 2'
        }
    }
}