Typescript lodash Groupby嵌套数组

有人能帮助我如何使用lodash groupby实现以下输入到所需输出吗？我尝试了lodash groupby方法，如其他链接中所讨论的，但无法实现我预期的输出。 输入：

inputList: dataMaster[] = [
  {
    "isSelected": true,
    "GroupKey": "G1",
    "GroupName": "Group1",
    "Key": "Key1",
    "Name": "Key Name 1"
  },
  {
    "isSelected": true,
    "GroupKey": "G1",
    "GroupName": "Group1",
    "Key": "Key2",
    "Name": "Key Name 2"
  },
  {
    "isSelected": true,
    "GroupKey": "G2",
    "GroupName": "Group2",
    "Key": "Key1",
    "Name": "Key Name 1"
  },
  {
    "isSelected": true,
    "GroupKey": "G2",
    "GroupName": "Group2",
    "Key": "Key2",
    "Name": "Key Name 2"
  }

预期产出如下：

outputList: dataGroup[] = [
       {
          GroupKey:"G1",
          GroupName:"Group1",
          Group:[
             {
                Key:"Key1",
                Name:"Key Name 1"
             },
             {
                Key:"Key2",
                Name:"Key Name 2"
             }
          ]
       },
       {
          GroupKey:"G2",
          GroupName:"Group2",
          Group:[
             {
                Key:"Key1",
                Name:"Key Name 1"
             },
             {
                Key:"Key2",
                Name:"Key Name 2"
             }
          ]
       }
    ]

给你：

// Change as necessary for your module loading configuration
import _ = require("lodash");

let grouped1 = _.groupBy(inputList, (dm) => dm.GroupKey);
let outputList: dataGroup[] = Object.keys(grouped1).map((groupKey) => {
    let groupItems = grouped1[groupKey];
    return {
        GroupKey: groupKey,
        GroupName: groupItems[0].GroupName,
        Group: groupItems.map((dm) => _.pick(dm, "Key", "Name"))
    };
});

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如果您对这项工作有任何疑问，请告诉我。

谢谢Matt。这是预期的工作！你救了我一天！我得到了它！请解释为什么这被否决，以便我在不遵循StackOverflow流程的情况下可以更正它。