I looking for "translator" for JavaScript like already is CoffeScript, which will be work for example with forEach (inspired by Groovy)

myArray.forEach() -> val, idx {
   // do something with value and idx
}

translate to JavaScript

myArray.forEach(function(val, idx){
   // do something with value and idx
});

or something more usefull...

function event(cb){
  foo()-> err, data1;
  bar(data1)-> err, data2;      
  cb(data2);
}

the method are encapsulated

function event(cb){
  foo(function(err,data1){
    bar(data1, function(err, data2) {
       cb(data2);
    });
  });
}

I want ask if similar "compiler" to JavaScript like this even better already doesn't exists?

What would be super cool... my code in nodejs looks mostly like this :-)

function dealer(cb){
  async.parallel([
    function(pcb){
      async.watterfall([function(wcb){
              first(function(a){ wcb(a); });
          }, function(a, wcb){
              thirt(a, function(c){ wcb(c); });
              fourth(a, function(d){ 
                // dealing with “a” as well and nobody care my result
              });
          }], 
        function(err, array_with_ac){
          pcb(array_with_ac);
        });
      }, function(pcb){
            second(function(b){ pcb(b);});
      }], function(err, data){
         cb(data[0][0]+data[1]+data[0][1]); // dealing with “a” “b” and “c” not with “d”
    });
  }

but, look how beautiful and readable the code could be:

function dealer(cb){
  first() -> a;
  second() -> b;
  third(a) -> c; // dealing with “a”     
  fourth(a) -> d; // dealing with “a” as well and nobody care about my result    
  cb(a+b+c); // dealing with “a” “b” and “c” not with “d”
}

yes this is ideal case when the translator auto-decide, method need to be run as parallel and method need be call after finish another method. I can imagine it's works

Please, do you know about something similar? Thank you for any advice;-)