react import echarts3 world.js问题

Question

import echarts from 'echarts/dist/echarts.js';

import 'echarts/map/js/world.js';

echarts3是通过npm 安装，路径也正确，就是不知道为什么提示map world not exists。

Answer 1

import echarts from 'echarts';

require('echarts/map/js/world.js');