text: import React from 'react'
  import ReactDom from 'react-dom'
  import * as Sentry from '@sentry/browser'
  import { App } from './demo'
  
  /**
   * 注册链接https://sentry.io/welcome/
   * 生成一个DSN串。 DSN是链接我们要上报的项目和sentry服务端的钥匙。
   * */
  const dsn = ''
  dsn && Sentry.init({
    dsn
  })
  
  ReactDom.render(<App/>, document.getElementById('app'))
  