From e213cc1b0688025115c1d1d79cb9de62a32140f3 Mon Sep 17 00:00:00 2001
From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com>
Date: Wed, 1 Nov 2023 11:19:59 -0400
Subject: [PATCH] MakePrimitiveRef generic so that UNDEFINED_Reference can be
 Reference<undefined> rather than Reference<unknown>

---
 packages/@glimmer/reference/lib/reference.ts | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/packages/@glimmer/reference/lib/reference.ts b/packages/@glimmer/reference/lib/reference.ts
index 705692d7a..a3156202a 100644
--- a/packages/@glimmer/reference/lib/reference.ts
+++ b/packages/@glimmer/reference/lib/reference.ts
@@ -56,8 +56,8 @@ class ReferenceImpl<T = unknown> implements Reference<T> {
   }
 }
 
-export function createPrimitiveRef(value: unknown): Reference {
-  const ref = new ReferenceImpl(UNBOUND);
+export function createPrimitiveRef<T = unknown>(value: T): Reference<T> {
+  const ref = new ReferenceImpl<T>(UNBOUND);
 
   ref.tag = CONSTANT_TAG;
   ref.lastValue = value;
@@ -71,8 +71,8 @@ export function createPrimitiveRef(value: unknown): Reference {
 
 export const UNDEFINED_REFERENCE = createPrimitiveRef(undefined);
 export const NULL_REFERENCE = createPrimitiveRef(null);
-export const TRUE_REFERENCE = createPrimitiveRef(true);
-export const FALSE_REFERENCE = createPrimitiveRef(false);
+export const TRUE_REFERENCE = createPrimitiveRef(true as const);
+export const FALSE_REFERENCE = createPrimitiveRef(false as const);
 
 export function createConstRef(value: unknown, debugLabel: false | string): Reference {
   const ref = new ReferenceImpl(CONSTANT);