Resolving multiple promises , closure and hosting

promise

then((pool: any) => {

         Promise.all([pool.request()

        .query(queryStr),

        pool.request()

        .query(queryStr),

        pool.request()

        .query(queryStr)] )

        .then((result: any) => {

           

       })

Closure

function like (){

var like=0;

return function(){

    like++;

    console.log(like);

}

}

undefined

var myLike = new like()

hosting

add ();

function add(){console.log("adkka")}

[5:12]

add ();

var add = function (){console.log("adkka")}