@kangc/v-md-editor/src/plugins/highlight-lines/index.js

A markdown editor built on Vue

import markdownItHighlightLines from '@/utils/markdown-it-highlight-lines';

export default function () {
  return {
    install(VMdEditor) {
      VMdEditor.extendMarkdown((mdParser) => {
        mdParser.use(markdownItHighlightLines);
      });
    },
  };
}