ant-design-vue/components/menu/MenuItem.jsx

import { Item, itemProps } from '../vc-menu';
import { getOptionProps } from '../_util/props-util';
import Tooltip from '../tooltip';
function noop() {}
export default {
  inheritAttrs: false,
  props: itemProps,
  name: 'MenuItem',
  inject: {
    getInlineCollapsed: { default: () => noop },
  },
  isMenuItem: 1,
  methods: {
    onKeyDown(e) {
      this.$refs.menuItem.onKeyDown(e);
    },
  },
  render(h) {
    const props = getOptionProps(this);
    const { level, title, rootPrefixCls } = props;
    const { getInlineCollapsed, $slots, $attrs: attrs, $listeners } = this;
    const inlineCollapsed = getInlineCollapsed();
    let titleNode;
    if (inlineCollapsed) {
      titleNode = title || (level === 1 ? $slots.default : '');
    }

    const itemProps = {
      props: {
        ...props,
        title: inlineCollapsed ? null : title,
      },
      attrs,
      on: $listeners,
    };
    const toolTipProps = {
      props: {
        title: titleNode,
        placement: 'right',
        overlayClassName: `${rootPrefixCls}-inline-collapsed-tooltip`,
      },
    };
    return (
      <Tooltip {...toolTipProps}>
        <Item {...itemProps} ref="menuItem">
          {$slots.default}
        </Item>
      </Tooltip>
    );
  },
};