nutui/loader/md-vue/link-open.js

// add target="_blank" to all links
module.exports = function linkOpen(md) {
  const defaultRender =
    md.renderer.rules.link_open ||
    function(tokens, idx, options, env, self) {
      return self.renderToken(tokens, idx, options);
    };

  md.renderer.rules.link_open = function(tokens, idx, options, env, self) {
    const aIndex = tokens[idx].attrIndex('target');

    if (aIndex < 0) {
      tokens[idx].attrPush(['target', '_blank']); // add new attribute
    }

    return defaultRender(tokens, idx, options, env, self);
  };
};