themes/gitbook/components/MenuItemPCNormal.js

import Link from 'next/link'
import { useRouter } from 'next/router'

export const MenuItemPCNormal = props => {
  const { link } = props
  const router = useRouter()
  const selected = (router.pathname === link.to) || (router.asPath === link.to)
  if (!link || !link.show) {
    return null
  }

  return <Link
        key={`${link.id}-${link.to}`}
        title={link.to}
        href={link.to}
        className={'px-2 duration-300 text-sm justify-between dark:text-gray-300 cursor-pointer flex flex-nowrap items-center ' +
            (selected ? 'bg-green-600 text-white hover:text-white' : 'hover:text-green-600')}>
        <div className='items-center justify-center flex '>
            <i className={link.icon} />
            <div className='ml-2 whitespace-nowrap'>{link.name}</div>
        </div>
        {link.slot}
    </Link>
}