snapshot of https://github.com/shadcn-ui/ui.git (main, 2026-09-15; blobs > 131072B omitted)

apps/v4/hooks/use-mutation-observer.ts

@@ -0,0 +1,20 @@
+import * as React from "react"
+
+export const useMutationObserver = (
+  ref: React.RefObject<HTMLElement | null>,
+  callback: MutationCallback,
+  options: MutationObserverInit = {
+    attributes: true,
+    characterData: true,
+    childList: true,
+    subtree: true,
+  }
+) => {
+  React.useEffect(() => {
+    if (ref.current) {
+      const observer = new MutationObserver(callback)
+      observer.observe(ref.current, options)
+      return () => observer.disconnect()
+    }
+  }, [ref, callback, options])
+}