import _ from "lodash";

const users = [

{ id: 1, name: "A", dept: "dev", score: 80 },

{ id: 2, name: "B", dept: "ops", score: 95 },

{ id: 3, name: "C", dept: "dev", score: 88 },

{ id: 3, name: "C", dept: "dev", score: 86},

];

// 分组

const byDept = _.groupBy(users, "dept");

// 建索引

//const byId = _.keyBy(users, "id");

// 排序

const sorted = _.orderBy(users, ["score"], ["desc"]);

// 安全取值

const city = _.get({ profile: { addr: { city: "Shanghai" } } }, "profile.addr.city", "N/A");

console.log(sorted);