过滤重复对象的数组并得到它们的总和

const data = [
  { id: 1, value: 10 },
  { id: 2, value: 20 },
  { id: 1, value: 10 },
  { id: 3, value: 30 },
  { id: 2, value: 20 }
];

const uniqueData = Array.from(new Map(data.map(item => [item.id, item])).values());
const totalValue = uniqueData.reduce((sum, item) => sum + item.value, 0);

console.log(uniqueData); // [{ id: 1, value: 10 }, { id: 2, value: 20 }, { id: 3, value: 30 }]
console.log(totalValue); // 60

const uniqueData = Array.from(new Map(data.map(item => [item.id, item])).values());

const totalValue = uniqueData.reduce((sum, item) => sum + item.value, 0);