通过嵌套数组对象属性将数组映射到字符串数组

拥有包含嵌套数组的对象数组：

let arr = [{
  name: "aaa",
  inputs: [{
    inputName: "input-1",
    groups: [{
      groupName: "group-a"
    }]
  }]
}, {
  name: "bbb",
  inputs: [{
    inputName: "input-2",
    groups: [{
      groupName: "group-b"
    }]
  }]
}];

如何映射它并返回包含以下内容的字符串数组团队名字值，像这样：

 ['group-a', 'group-b']

您可以使用flatMap https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flatMap and map https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map

const arr = [{name:"aaa",inputs:[{inputName:"input-1",groups:[{groupName:"group-a"}]}]},{name:"bbb",inputs:[{inputName:"input-2",groups:[{groupName:"group-b"}]}]}];

const res = arr.flatMap(
  o => o.inputs.flatMap(
    o => o.groups.map(o => o.groupName)
  )
);

console.log(res);