إنشاء كائن من أزواج القيم بإستخدام Object.fromEntries

const entries = [["name", "Osama"], ["age", 40]];
console.log(JSON.stringify(Object.fromEntries(entries)));

{"name":"Osama","age":40}

const prices = { book: 10, pen: 5 };
const updated = Object.fromEntries(
  Object.entries(prices).map(([key, value]) => [key, value * 2])
);
console.log(JSON.stringify(updated));

{"book":20,"pen":10}