Function shallowEqual

src/utils/objects.js:102–126

(objA, objB)

}

export function shallowEqual(objA, objB) {
  if (objA === objB) {
    return true;
  }

  if (typeof objA !== 'object' || objA === null ||
      typeof objB !== 'object' || objB === null) {
    return false;
  }

  const keysA = Object.keys(objA);

  if (keysA.length !== Object.keys(objB).length) {
    return false;
  }

  for (let i = 0, key; i < keysA.length; i++) {
    key = keysA[i];
    if (!objB.hasOwnProperty(key) || objA[key] !== objB[key]) {
      return false;
    }
  }

  return true;
}