packages/example/src/routes/tests.tsx

@@ -11,11 +11,7 @@ export const Route = createFileRoute("/tests")({
 
 function RouteComponent() {
     const deepRef = R.useRef({ value: "poulet" })
-    const deepValueRef = R.useSubRefFromGetSet(
-        deepRef,
-        b => b.value,
-        (b, a) => ({ ...b, value: a }),
-    )
+    const deepValueRef = R.useSubRefFromPath(deepRef, ["value"])
 
     // const value = R.useMemoScoped(Effect.addFinalizer(() => Console.log("cleanup")).pipe(
     //     Effect.andThen(makeUuid4),

packages/reffuse/src/ReffuseNamespace.ts

@@ -2,7 +2,7 @@ import { type Context, Effect, ExecutionStrategy, Exit, type Fiber, type Layer,
 import * as React from "react"
 import * as ReffuseContext from "./ReffuseContext.js"
 import * as ReffuseRuntime from "./ReffuseRuntime.js"
-import { SetStateAction, SubscriptionSubRef } from "./types/index.js"
+import { PropertyPath, SetStateAction, SubscriptionSubRef } from "./types/index.js"
 
 
 export interface RenderOptions {
@@ -396,6 +396,17 @@ export abstract class ReffuseNamespace<R> {
         )
     }
 
+    useSubRefFromPath<B, const P extends PropertyPath.Paths<B>, R>(
+        this: ReffuseNamespace<R>,
+        parent: SubscriptionRef.SubscriptionRef<B>,
+        path: P,
+    ): SubscriptionSubRef.SubscriptionSubRef<PropertyPath.ValueFromPath<B, P>, B> {
+        return React.useMemo(
+            () => SubscriptionSubRef.makeFromPath(parent, path),
+            [parent],
+        )
+    }
+
     useSubscribeRefs<
         const Refs extends readonly SubscriptionRef.SubscriptionRef<any>[],
         R,