@kangc/v-md-editor/src/plugins/katex/parser-cdn.js

A markdown editor built on Vue

import parserCreator from './parser-creator';

const isServer = typeof window === 'undefined';
if (!isServer && !window.katex) {
  console.error('Please import resources katex from cdn');
}

export default parserCreator(!isServer ? window.katex : null);