Add useInitRef

See facebook/react#14490
ProjectLighthouseCAU · Aug 21, 2023 · 648ccac · 648ccac
1 parent 6bbabbf
commit 648ccac
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/src/hooks/useInitRef.ts b/src/hooks/useInitRef.ts
@@ -0,0 +1,9 @@
+import { MutableRefObject, useRef } from 'react';
+
+export function useInitRef<T>(initializer: () => T): MutableRefObject<T> {
+  const ref = useRef<T | null>(null);
+  if (ref.current === null) {
+    ref.current = initializer();
+  }
+  return ref as MutableRefObject<T>;
+}