9、PWA

使用babel 的插件形式

   [
      '@vuepress/pwa',
      {
        serviceWorker: true,
        updatePopup: {
          message: "New content is available.",
          buttonText: "Refresh"
        }
      }
    ]

提供 Manifest 和 icons (opens new window)

拷贝到public目录下

发布后出现 service workers