va_admin_frontend/src/modules/base/pages/main/components/bmenu.tsx

import { defineComponent, h, VNode } from "vue";
import { useBase, Menu } from "/$/base";
import { useCool } from "/@/cool";

export default defineComponent({
	name: "b-menu",

	setup() {
		const { router, route, browser } = useCool();
		const { menu, app } = useBase();

		// 页面跳转
		function toView(url: string) {
			if (url != route.path) {
				router.push(url);
			}

			// 小屏下点击收起左侧菜单
			if (browser.isMini) {
				app.fold(true);
			}
		}

		// 渲染子菜单
		function renderMenu() {
			function deep(list: Menu.Item[], index: number) {
				return list
					.filter((e) => e.isShow)
					.map((e) => {
						const item = (e: Menu.Item) => {
							return (
								<div class="wrap">
									<cl-svg name={e.icon} />
									<span v-show={!app.isFold || index != 1}>{e.meta?.label}</span>
								</div>
							);
						};

						if (e.type == 0) {
							return h(
								<el-sub-menu />,
								{
									index: String(e.id),
									key: e.id,
									popperClass: "app-slider__menu"
								},
								{
									title() {
										return item(e);
									},
									default() {
										return deep(e.children || [], index + 1);
									}
								}
							);
						} else {
							return h(
								<el-menu-item />,
								{
									index:
										route.path == "/"
											? e.meta?.isHome
												? "/"
												: e.path
											: e.path,
									key: e.id
								},
								{
									default() {
										return item(e);
									}
								}
							);
						}

					});
			}

			return deep(menu.list, 1);
		}

		return () => {
			return (
				<div class="app-slider__menu">
					<el-menu
						default-active={route.path}
						background-color="transparent"
						collapse-transition={false}
						collapse={browser.isMini ? false : app.isFold}
						onSelect={toView}
					>
						{renderMenu()}
					</el-menu>
				</div>
			);
		};
	}
});