@ant-design-vue/use/es/useClickAway/index.js

Vue 3 Composition Api Library.

import { isRef } from 'vue';
import useEventListener from '../useEventListener'; // 鼠标点击事件，click 不会监听右键

var defaultEvent = 'click';
export default function useClickAway(ele, onClickAway) {
  var eventName = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : defaultEvent;
  var container = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : document;

  function onClickAwayFn(e) {
    var dom = ele.value;

    if (!dom || dom.contains(e.target)) {
      return;
    }

    onClickAway(e);
  }

  var removeListener;

  if (isRef(container)) {
    removeListener = useEventListener(container, {
      type: eventName,
      listener: onClickAwayFn
    });
  } else {
    container.addEventListener(eventName, onClickAwayFn);

    removeListener = function removeListener() {
      container.removeEventListener(eventName, onClickAwayFn);
    };
  }

  return removeListener;
}