documentation/node_modules/@docusaurus/theme-classic/lib/theme/Footer/LinkItem/index.js

/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */
import React from 'react';
import Link from '@docusaurus/Link';
import useBaseUrl from '@docusaurus/useBaseUrl';
import isInternalUrl from '@docusaurus/isInternalUrl';
import IconExternalLink from '@theme/Icon/ExternalLink';
export default function FooterLinkItem({item}) {
  const {to, href, label, prependBaseUrlToHref, ...props} = item;
  const toUrl = useBaseUrl(to);
  const normalizedHref = useBaseUrl(href, {forcePrependBaseUrl: true});
  return (
    <Link
      className="footer__link-item"
      {...(href
        ? {
            href: prependBaseUrlToHref ? normalizedHref : href,
          }
        : {
            to: toUrl,
          })}
      {...props}>
      {label}
      {href && !isInternalUrl(href) && <IconExternalLink />}
    </Link>
  );
}