service-visit/app/controller/home.js

'use strict';

const Controller = require('egg').Controller;

class HomeController extends Controller {
  async index() {
    const { ctx } = this;
    const a = { id: '1', name: '123' };
    const icon = 'jjjj';
    Object.assign(a, { icon });
    console.log(a);
    ctx.body = 'hi, egg';
  }
}

module.exports = HomeController;