Just a little module to provide Async functions using ES6 Generators without BabelJS or others transpilers.

sync.js

'use strict'

function Sync(fn,args) {
  return new Promise(function(resolve, reject) {
    let gen, call, callNext, callThrow
    call = function(isErr, arg) {
      let result
      try {
        if (isErr)
          result = gen.throw(arg)
        else
          result = gen.next(arg)
      } catch(e) {
        return reject(e)
      }
      if (result.done)
        return resolve(result.value)
      else {
        Promise.resolve(result.value).then(callNext, callThrow)
      }
    }
    callNext = call.bind(null, false)
    callThrow = call.bind(null, true)
    gen=fn.apply(this, args)
    callNext()
  });
};

Sync.fn=function(fn) {
  return function() {
    return Sync.call(this, fn, arguments);
  };
};

module.exports=Sync;