const data = [
  {
    title: '规划',
    type: 'program',
    children: [
      {
        title: '规划',
        type: 'program',
        children: [
          {
            title: '工作',
            type: 'work',
            children: [
              {
                title: '工作',
                type: 'work',
                children: [
                  {
                    title: '任务',
                    type: 'task',
                  },
                ],
              },
            ],
          },
        ],
      },
      {
        title: '规划',
        type: 'program',
        children: [
          {
            title: '工作',
            type: 'work',
            children: [
              {
                title: '工作',
                type: 'work',
                children: [
                  {
                    title: '工作',
                    type: 'work',
                    children: [
                      {
                        title: '任务',
                        type: 'task',
                      },
                    ],
                  },
                ],
              },
            ],
          },
        ],
      },
    ],
  },
  {
    title: '规划',
    type: 'program',
    children: [
      {
        title: '工作',
        type: 'work',
        children: [
          {
            title: '任务',
            type: 'task',
          },
        ],
      },
      {
        title: '工作',
        type: 'work',
        children: [
          {
            title: '任务',
            type: 'task',
          },
        ],
      },
    ],
  },
  {
    title: '规划',
    type: 'program',
    children: [
      {
        title: '工作',
        type: 'work',
        children: [
          {
            title: '任务',
            type: 'task',
          },
        ],
      },
    ],
  },
  {
    title: '规划',
    type: 'program',
    children: [
      {
        title: '规划',
        type: 'program',
        children: [
          {
            title: '工作',
            type: 'work',
            children: [
              {
                title: '任务',
                type: 'task',
              },
              {
                title: '任务',
                type: 'task',
              },
            ],
          },
        ],
      },
    ],
  },
];