优化

client/shared/hooks/usePrevious.ts

@@ -0,0 +1,11 @@
+import { useEffect, useRef } from 'react';
+
+export function usePrevious<T>(state: T): T | undefined {
+  const ref = useRef<T>();
+
+  useEffect(() => {
+    ref.current = state;
+  });
+
+  return ref.current;
+}