old_contents: import './style.css'
  import DefaultTheme from 'vitepress/theme'
  
  export default {
    ...DefaultTheme,
  }
  
new_contents: import './style.css'
  import DefaultTheme from 'vitepress/theme'
  
  export default {
    ...DefaultTheme,
    enhanceApp(ctx) {
      DefaultTheme.enhanceApp && DefaultTheme.enhanceApp(ctx)
  
      if (!import.meta.env.SSR && import.meta.env.PROD) {
        const el = document.createElement('script')
        el.defer = true
        el.async = true
        el.src = `https://static.cloudflareinsights.com/beacon.min.js`
        el.setAttribute(
          'data-cf-beacon',
          `{"token": "9d769b3aa3e14c0888f27dc58cc075c7"}`
        )
        document.body.append(el)
      }
    },
  }
  
subject: add cloudflare analytics