const obj:any[] = [

    {

        id: 33,

        username: "mengsongna",

        realName: "孟松娜",

        company: {

            id: 1,

            company_name: "海思特"

        },

        role: {

            id: 4,

            role_name: "业务管理员",

            role_value: "saler"

        },

        email: ""

    }

    ]

const  [{role}] = obj;

console.log(role)    // { id: 4, role_name: '业务管理员', role_value: 'saler' }