72.实现object.create

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function createObj(o) {
 function f() {};
 f.prototype = o;
 return new f;
}


function _create(proto, propertiesObject) {
 if (typeof proto !== 'object' && proto !== null) throw new TYpeError("")

 function Fn() {}
 Fn.prototype = proto
 const obj = new Fn()
 if (propertiesObject) Object.defineProperties(obj, propertiesObject);
 if (proto === null) {
  Object.getPrototypeOf(obj)  = null;
 }
 return obj;
}