1-原来的数据，想把直属部门的seller_list，组装成新的一颗树，跟其他是同样的结构？？？
[

            {
                "department_name": "XXX医疗设备有限公司",
                "seller_list": [
                    {
                        "employee_name": "yq",
                        "amount": 100000.0,
                    }
                ],
                "child_list": [
                    {
                        "department_name": "销售部",
                        "seller_list": [
                            
                        ],
                        "child_list": [
                            {
                                "department_name": "销售一部",
                                "seller_list": [
                                    {
                                        "employee_name": "孙鹏",
                                        "amount": 10000.0,
                                    }
                                ],
                                "child_list": [],
                                "layer_number": 2
                            },
                            
                        ],
                        "layer_number": 1
                    },
                    
                ],
                "layer_number": 0
            }
        ]

2-需要重新把这颗树解开，把部门下的直属员工，规整为同样的层级结构，哪怕是一个空的部门名字都可以！重新组装成新的一颗树，搞了很久了，该怎么做啊！
[

            {
                "department_name": "XXX医疗设备有限公司",
                "seller_list": [
                    {
                        "employee_name": "yq",
                        "amount": 100000.0,
                    }
                ],
                "child_list": [
                    {
                        "department_name": "销售部",
                        "seller_list": [
                            
                        ],
                        "child_list": [
                            {
                                "department_name": "销售一部",
                                "seller_list": [
                                    {
                                        "employee_name": "孙鹏",
                                        "amount": 10000.0,
                                    }
                                ],
                                "child_list": [],
                                "layer_number": 2
                            },
                            
                        ],
                        "layer_number": 1
                    },
                    {
                        "department_name": "--",
                        "seller_list": [
                            
                        ],
                        "child_list": [
                            {
                                "department_name": "--",
                                "seller_list": [
                                        {
                                            "employee_name": "yq",
                                            "amount": 100000.0,
                                        }
                                ],
                                "child_list": [],
                                "layer_number": 2
                            },
                            
                        ],
                        "layer_number": 1
                    },
                ],
                "layer_number": 0
            }
        ]

lodash 里面有个 flattenDeep 可以把这种结构展平，然后你自己递归构造一颗新树就好了。