Async Await using Promises and Generators.

gistfile1.txt

var asyncTask1=()=>{
   return new Promise((resolve,reject)=>{
       setTimeout(()=>{
           resolve({message:"Done the AsyncTask 1 "});
       },100);
   })
}
var asyncTask2=()=>{
   return new Promise((resolve,reject)=>{
       setTimeout(()=>{
           resolve({message:"Done the AsyncTask 2 "});
       },100);
   })
}
var asyncAwait=function* (){
     var result1=yield asyncTask1();
     console.log(result1);
     var result2=yield asyncTask2();
     console.log(result2);
}

var asyncRunner = (genFunction)=>{
    var genFunctionGenerator = genFunction();
    runGenerator();
    function runGenerator(val){             
        var promiseResult= genFunctionGenerator.next(val);
        //Now keep on checking whether this is resolve are not.
        if(promiseResult.done){
            return promiseResult.value;           
        }
        else{
           // wait for sometime to check whether promise was resolved
           Promise.all([promiseResult.value]).then((results)=>{
               runGenerator(results[0]);
           })
        }      
    }  
}

var asyncAwaitGenerator = asyncRunner(asyncAwait);