function install(hook) {
  const dom = Docsify.dom

  hook.mounted(_ => {
    const div = dom.create('div')
    div.id = 'gitalk-container'
    const main = dom.getNode('#main')
    div.style = `width: ${main.clientWidth}px; margin: 0 auto 20px;`
    dom.appendTo(dom.find('.content'), div)
  })

  hook.doneEach(_ => {
    const el = document.getElementById('gitalk-container')
    while (el.hasChildNodes()) {
      el.removeChild(el.firstChild)
    }

    // eslint-disable-next-line
    gitalk.render('gitalk-container')
  })
}

$docsify.plugins = [].concat(install, $docsify.plugins)