Is there any way to get the property name of an object without having some sort of redundant 'name' property inside the object itself? This will mainly be used in cases where we a user tries to fetch an object that doesn't exist.Is there any way to get the property name of an
阅读背景：
如何在对象内部没有冗余的“name”键的情况下获取对象的属性名称？以及如何返回用户提供的未定义对象的“名称”？
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