simple version of promises without then, when, chaining

iou.js

var fs = require('fs');

module.export.fileObj = function(file, encode) {
  var status = 'pending',
      doneStack = [],
      failStack = [],
      done, fail, fullFail, fullData,
      rect = {};
  fs.fileRead(file, encode, function(data, err) {
    if (!err) {
      doneStack.forEach(function(doneCallback) {
        doneCallback(data);
        fullData = data;
        status = 'success';
      });
    } else {
      failStack.forEach(function(failCallback) {
        failCallback(err);
        fullFail = err;
        status = 'fail';
      });
    }
  });
  done = function(callback) {
    if (status === 'success') {
      callbaack(fullData);
    } else {
      doneStack.push(callback);
    }
    return rect;
  };
  fail = function(callback) {
    if (status === 'fail') {
      fullFail(fullFail);
    } else {
      failStack.push(callback);
    }
  };
  rect.done = done;
  rect.fail = fail;
  return rect;
};