add plugin: vuepress/plugin-pwa

  lang: 'zh-CN',

  description: 'Online manual for sustecher',

  head: [

    ['link', { rel: 'icon', href: `/assets/favicon.ico` }],

    ['link', { rel: 'icon', href: `/logo-assets/touch/homescreen192.png` }],

    ['meta', { name: 'theme-color', content: color }],

    ['meta', { prefix: ogprefix, property: 'og:type', content: 'article' }],

    ['meta', { prefix: ogprefix, property: 'og:image', content: 'https://cdn.jsdelivr.net/gh/sustc/sustech-online-ng@master/docs/assests/og-image.png' }],

    ['meta', { prefix: ogprefix, property: 'og:article:author', content: author }],

    ['meta', { name: 'apple-mobile-web-app-capable', content: 'yes' }],

    ['meta', { name: 'apple-mobile-web-app-status-bar-style', content: 'black' }],

    ['link', { rel: 'apple-touch-icon', href: '/logo-assets/touch/homescreen168.png' }],

    ['meta', { name: 'msapplication-TileImage', content: '/logo-assets/touch/homescreen144.png' }],

    ['meta', { name: 'msapplication-TileColor', content: '#000000' }],

    ['meta', { name: 'google-site-verification', content: 'Av-srANCmFA_yZ8Iasa1yQsIPJCF_zlP5AoD35m6_Ww' }],

  ],

  plugins: [

      },

    ],

    'fulltext-search',

    [

    '@vuepress/pwa',

    {

      serviceWorker: true,

      updatePopup: true,

    },

    ],

    [

      '@vuepress/last-updated',

      {

      '/catering/',

      '/transport/',

      '/surroundings/',

      '/site-help/',

    ]

  }

}