useRefsState work

packages/reffuse/src/ReffuseHelpers.ts

@@ -410,6 +410,38 @@ export abstract class ReffuseHelpers<R> {
         return [reactStateValue, setValue]
     }
 
+    useRefsState<
+        Refs extends { [K in keyof Refs]: SubscriptionRef.SubscriptionRef<any> },
+        R,
+    >(
+        this: ReffuseHelpers<R>,
+        refs: Refs,
+    ): {
+        [K in keyof Refs]: readonly [
+            Effect.Effect<Refs[K]>,
+            React.Dispatch<React.SetStateAction<Effect.Effect<Refs[K]>>>,
+        ]
+    } {
+        const initialState = this.useMemo(() => Effect.Do.pipe(
+            Effect.bindAll(() => refs)
+        ), [], { doNotReExecuteOnRuntimeOrContextChange: true })
+
+        const [reactStateValue, setReactStateValue] = React.useState(initialState)
+
+        this.useFork(() => Stream.runForEach(
+            Stream.changesWith(ref.changes, (x, y) => x === y),
+            v => Effect.sync(() => setReactStateValue(v)),
+        ), [ref])
+
+        const setValue = this.useCallbackSync((setStateAction: React.SetStateAction<A>) =>
+            Ref.update(ref, prevState =>
+                SetStateAction.value(setStateAction, prevState)
+            ),
+        [ref])
+
+        return [reactStateValue, setValue]
+    }
+
     useStreamFromValues<const A extends React.DependencyList, R>(
         this: ReffuseHelpers<R>,
         values: A,