vue获取对象数组中值相同的对象

  let list=[
        { id:3,name:'a', children: [2, 3, 4] },
        { id: 5,name:'b', children: [6, 7] },
        { id: 3,name:'a', children: [6, 7] },
      ]
    console.log(list.filter(item => this.duplicateIds(list)[0].includes(item.id)))

duplicateIds(data) {
      const ids = data.map(item => item.id);
      const counts = ids.reduce((acc, id) => {
        acc[id] = (acc[id] || 0) + 1;
        return acc;
      }, {});
      return Object.keys(counts).filter(key => counts[key] > 1);
    },