function isObjectEqual(a, b) {
 let aProps = Object.getOwnPropertyNames(a),
     bProps = Object.getOwnPropertyNames(b);

  if (aProps.length !== bProps.length) {
    return false;
  }

  for (let i = 0; i < aProps.length; i++) {
   let propName = aProps[i];
    if(a[propName] !== b[propName]) {
      return false;
    }
  }

  return true;
}