diff --git a/components/affix/index.tsx b/components/affix/index.jsx
similarity index 100%
rename from components/affix/index.tsx
rename to components/affix/index.jsx
diff --git a/components/comment/index.tsx b/components/comment/index.tsx
index a9949ffd9..9a34833af 100644
--- a/components/comment/index.tsx
+++ b/components/comment/index.tsx
@@ -49,7 +49,7 @@ const Comment = (
     actions && actions.length ? (
       <ul class={`${prefixCls}-actions`}>
         {actions.map((action, index) => (
-          <li key={`action-${index}`}>{action}</li> // eslint-disable-line react/no-array-index-key
+          <li key={`action-${index}`}>{action}</li>
         ))}
       </ul>
     ) : null;
diff --git a/components/vc-virtual-list/hooks/useFrameWheel.ts b/components/vc-virtual-list/hooks/useFrameWheel.ts
index df7b3286f..ef02e4a18 100644
--- a/components/vc-virtual-list/hooks/useFrameWheel.ts
+++ b/components/vc-virtual-list/hooks/useFrameWheel.ts
@@ -18,7 +18,7 @@ export default function useFrameWheel(
   let nextFrame: number | null | undefined = null;
 
   // Firefox patch
-  let wheelValue: null = null;
+  let wheelValue = null;
   let isMouseScroll = false;
 
   // Scroll status sync
diff --git a/components/vc-virtual-list/hooks/useHeights.tsx b/components/vc-virtual-list/hooks/useHeights.tsx
index efe7daba7..2f87e51e7 100644
--- a/components/vc-virtual-list/hooks/useHeights.tsx
+++ b/components/vc-virtual-list/hooks/useHeights.tsx
@@ -10,7 +10,7 @@ export default function useHeights<T>(
 ): [(item: T, instance: HTMLElement) => void, () => void, CacheMap, Ref<number>] {
   const instance = new Map<VNodeProps['key'], HTMLElement>();
   const heights = reactive<CacheMap>({});
-  let updatedMark = ref(0);
+  const updatedMark = ref(0);
   let heightUpdateId = 0;
   function collectHeight() {
     heightUpdateId += 1;