v-md-editor/src/plugins/mermaid/parser.js

A markdown editor built on Vue

import markdownItMermaid from '@/utils/markdown-it-mermaid';

export default function parser(vMdParser) {
  vMdParser.extendMarkdown((mdParser) => {
    if (mdParser) {
      mdParser.use(markdownItMermaid);
    }
  });
}