The initial value of Object.prototype.constructor is the standard built-in Object constructor.
toString(): string
Returns a string representation of an object.
toLocaleString(): string
Returns a date converted to a string using the current locale.
hasOwnProperty(v: PropertyKey): boolean
Determines whether an object has a property with the specified name.
isPrototypeOf(v: Object): boolean
Determines whether an object exists in another object's prototype chain.
propertyIsEnumerable(v: PropertyKey): boolean
Determines whether a specified property is enumerable.