isPlainObject = (val) => {
  if (kindOf(val) !== 'object') {
    return false;
  }

  const prototype = getPrototypeOf(val);
  return (prototype === null || prototype === Object.prototype || Object.getPrototypeOf(prototype) === null) && !(Symbol.toStringTag in val) && !(Symbol.iterator in val);
}
Determine if a value is a plain Object

@param {*} val The value to test

@returns {boolean} True if value is a plain Object, otherwise false