fix(anchor): [anchor] fix anchor error when links is empty (#2155)

* fix(anchor): [anchor] fix anchor error when links is empty

* fix(anchor): [anchor] fix anchor error when links is empty

Author: gimmyhehe

packages/renderless/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@opentiny/vue-renderless",
-  "version": "3.18.2",
+  "version": "3.18.3",
   "private": true,
   "description": "An enterprise-class UI component library, support both Vue.js 2 and Vue.js 3, as well as PC and mobile.",
   "author": "OpenTiny Team",

packages/renderless/src/anchor/index.ts

@@ -124,6 +124,9 @@ export const handleScroll = (state: IAnchorRenderlessParams['state']) => () => {
 
 // 设置滚动偏移量
 const setChildOffsetTop = ({ state, props }: Pick<IAnchorRenderlessParams, 'state' | 'props'>) => {
+  if (!props.links?.length) {
+    return
+  }
   state.offsetTop = document.querySelector(props.links[0].link)?.offsetTop || 0
 }