Using ES6 coroutines for synchronous yielding of asynchronous stuff

gistfile1.js

function someAsyncFunction(param, callback) {
  setTimeout(function(){
    callback(null, param); // result
  }, 100)
}

Function.prototype.sync = function(param) {
  this(param, function(e, result) {
    Fiber.run(result); // substitute result instead of yield, resume current Fiber
  })
  return yield;
}

// Async environment
// 1. call someAsyncFunction in nodejs style
someAsyncFunction(123, function(err, result){ 
  if (err) return console.error(err);
  console.log('result: ', result);
})

// 2. call someAsyncFunction in new super-puper-synchronous way
var result = someAsyncFunction.sync(123);
console.log(result);