SOURCE

/*
 * @Descripttion: 
 * @version: 
 * @Author: Do not Edit
 * @Date: 2021-07-13 16:25:42
 * @LastEditors: 王珅
 * @LastEditTime: 2021-07-13 16:25:43
 */
const files=[{
    "fjid": "4d22d1ec-53d4-4164-905b-e071c17b4df4",
    "fjlx": "视频",
    "jcsj": "2021-06-06",
    "jcgs": "A公司",
    "fjmc": "2W6-2W7.mp4",
    "cflj": "\\FHRes\\CCTV检测数据\\视频\\芦莘大道（东港路-临沪大道）\\2W6-2W7.mp4"
}, {
    "fjid": "c0c6e517-db9d-452c-aa46-2921b6cfa6dd",
    "fjlx": "视频",
    "jcsj": "2021-06-06",
    "jcgs": "A公司",
    "fjmc": "2W2-2W3.mp4",
    "cflj": "\\FHRes\\CCTV检测数据\\视频\\芦莘大道（康力大道-临沪大道）\\2W2-2W3.mp4"
}, {
    "fjid": "81c3c650-854c-4710-8b37-35d2b8e77a6d",
    "fjlx": "视频",
    "jcsj": "2021-05-10",
    "jcgs": "B公司",
    "fjmc": "2W5-2W6.mp4",
    "cflj": "\\FHRes\\CCTV检测数据\\视频\\芦莘大道（康力大道-临沪大道）\\2W5-2W6.mp4"
}, {
    "fjid": "41959773-d145-4fa1-8598-b8500a8002be",
    "fjlx": "报告",
    "jcsj": "2021-05-10",
    "jcgs": "B公司",
    "fjmc": "二标市政污水管网检测修复（修复报告）.pdf",
    "cflj": "\\FHRes\\CCTV检测数据\\报告\\二标市政污水管网检测修复（修复报告）.pdf"
}, {
    "fjid": "5b57d3d0-9530-491e-a507-8449c78c49b5",
    "fjlx": "报告",
    "jcsj": "2021-06-06",
    "jcgs": "A公司",
    "fjmc": "二标市政污水管网检测修复（检测报告）.PDF",
    "cflj": "\\FHRes\\CCTV检测数据\\报告\\二标市政污水管网检测修复（检测报告）.PDF"
}, {
    "fjid": "692c2912-829b-41d9-bbd3-608482ba4964",
    "fjlx": "视频",
    "jcsj": "2021-05-10",
    "jcgs": "B公司",
    "fjmc": "2W4-2W5.mp4",
    "cflj": "\\FHRes\\CCTV检测数据\\视频\\芦莘大道（康力大道-临沪大道）\\2W4-2W5.mp4"
}]

// 按时间排序
const orderByDate=_.orderBy(files,"jcsj","desc");
// 按时间分组
const groupByDate=_.groupBy(orderByDate,"jcsj");
// 内部按类别排序，先报告，后视频
for (const key in groupByDate) {
    if (Object.hasOwnProperty.call(groupByDate, key)) {
        const element = groupByDate[key];
        groupByDate[key]=_.orderBy(element,"fjlx","asc");
    }
}

console.log({groupByDate})

<div id='output'></div>