比如剪切板，现在是这样做的：

import component from './clipboard';
import { createApp } from 'vue';

let instance,
    copyText;

const createInstance = () => {
  const element = window.document.createElement('div');
  element.style.display = 'none';
  window.document.body.appendChild(element);

  instance = createApp(component).mount(element);
  copyText = instance.copyText;
};

const install = (app) => {
  if (!instance) createInstance();
  app.config.globalProperties.$copyText = copyText;
};

export default {
  install,
  copyText,
};

想知道你们是怎么做的。