a very quickly hacked implementation of go's defer in javascript

defer.js

var deferWrap = function (f) {
  return function () {
    var cbs = [];
    var d = function (cb) {
      cbs.push(cb);
    };
    var args = Array.prototype.slice.call(arguments);
    args.push(d);

    f.apply(this, args);

    cbs.forEach(function (cb) {
      cb();
    });
  };
};

var foo = deferWrap(function (x, defer) {
  defer(function () {
    console.log('deferred action');
  });
  x += 1;
  console.log('x:', x);
});

foo(10);
// x: 11
// deferred action

Hey, FYI, I've created a lib for this, feel free to criticize and report issues 😃
https://github.com/JsCommunity/golike-defer