ant-design-vue/components/checkbox/index.ts

import { App, Plugin } from 'vue';
import Checkbox from './Checkbox';
import CheckboxGroup from './Group';

Checkbox.Group = CheckboxGroup;

/* istanbul ignore next */
Checkbox.install = function(app: App) {
  app.component(Checkbox.name, Checkbox);
  app.component(CheckboxGroup.name, CheckboxGroup);
  return app;
};

export default Checkbox as typeof Checkbox &
  Plugin & {
    readonly Group: typeof CheckboxGroup;
  };