[lit-html] Make RefOrCallback generic (#3969)

lit · Jun 22, 2023 · 7d8d4a1 · 7d8d4a1
1 parent 5bb4083
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diff --git a/.changeset/smooth-swans-sin.md b/.changeset/smooth-swans-sin.md
@@ -0,0 +1,6 @@
+---
+'lit-html': patch
+'lit': patch
+---
+
+Make RefOrCallback generic like Ref<T>
diff --git a/packages/lit-html/src/directives/ref.ts b/packages/lit-html/src/directives/ref.ts
@@ -38,7 +38,7 @@ const lastElementForContextAndCallback: WeakMap<
   WeakMap<Function, Element | undefined>
 > = new WeakMap();
 
-export type RefOrCallback = Ref | ((el: Element | undefined) => void);
+export type RefOrCallback<T = Element> = Ref<T> | ((el: T | undefined) => void);
 
 class RefDirective extends AsyncDirective {
   private _element?: Element;