using ES6 Proxy to deal with methods of Promise'd objects. not sure how useful this is yet.

proxy-promise.js

// using ES6 Proxy to deal with methods of Promise'd objects. works for me in Edge though not Chrome somehow.
let handler = {
  get: (target, prop) => function() {
    if(target instanceof Promise) {
      let args = arguments;
      return target.then((o) => o[prop].apply(o, args));
    } else {
      let value = target[prop];
      return typeof value == 'function' ? value.bind(target) : value;
    }
  }
};

let obj = { greet: (name) => console.log('Hey ' + name) };
let later = (v) => new Promise((resolve, reject) => setTimeout(() => resolve(v), 1000))
let prom = later(obj);
let greeter = new Proxy(prom, handler);
greeter.greet('you');

@bekharsky thanks - I know my code had caused us some issues back then (so we backtracked from it), please do let us know if you have encountered any issues and please post us any updated code if you fix them ;-)