<p>コンソールをご確認ください</p>
const myObject = {
  name: "鈴木"
};

console.log(Object.hasOwn(myObject, "name"));

const myObject = {
  name: "鈴木",
  hasOwnProperty: () => {
    return false;
  }
};

console.log(Object.hasOwn(myObject, "name"));

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