为了解决The component appears to have a render method, but doesn't extend React.Component. dva issues 1717
在 index.js里面添加

import "@babel/polyfill";
// import "core-js/fn/array/for-each";
import dva from 'dva';
import './index.css';

Object.setPrototypeOf = require('setprototypeof');
// 不加setprototypeof 报 issue 1717
// 加了charts 报错

加上这句bizcharts(recharts/echarts)都报错

附上bizchars.js

import React from 'react';
import { Chart, Geom, Axis, Tooltip, Legend, Coord } from 'bizcharts';

// 数据源
const data = [
  { genre: 'Sports', sold: 275, income: 2300 },
  { genre: 'Strategy', sold: 115, income: 667 },
];

// 定义度量
const cols = {
  sold: { alias: '销售量' },
  genre: { alias: '游戏种类' }
};

// 渲染图表
function Test(){
    return (
      <div>
        <Chart width={600} height={400} data={data} scale={cols}>
          <Axis name="genre" />
          <Axis name="sold" />
          <Legend position="top" dy={-20} />
          <Tooltip />
          <Geom type="interval" position="genre*sold" color="genre" />
        </Chart>
        <h3>2hahah</h3>
      </div>
    )
  }
export default Test

umijs 里面提到更新 babel https://github.com/umijs/umi/...，不明白怎么更新
用 npm install babel@7.0.0-beta.48或者53都提示找不到包