从对象数组中删除重复项

const arr = [{id: 1, name: 'Alice'}, {id: 2, name: 'Bob'}, {id: 1, name: 'Alice'}];
const uniqueArr = Array.from(new Set(arr.map(JSON.stringify)), JSON.parse);
console.log(uniqueArr);

const arr = [{id: 1, name: 'Alice'}, {id: 2, name: 'Bob'}, {id: 1, name: 'Alice'}];
const uniqueArr = arr.reduce((acc, curr) => {
  const isDuplicate = acc.some(item => item.id === curr.id);
  if (!isDuplicate) {
    acc.push(curr);
  }
  return acc;
}, []);
console.log(uniqueArr);

const _ = require('lodash');
const arr = [{id: 1, name: 'Alice'}, {id: 2, name: 'Bob'}, {id: 1, name: 'Alice'}];
const uniqueArr = _.uniqBy(arr, 'id');
console.log(uniqueArr);