Refactoring

packages/example/src/routes/tests.tsx

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

packages/reffuse/src/ReffuseNamespace.ts

@@ -14,11 +14,16 @@ export interface ScopeOptions {
     readonly finalizerExecutionStrategy?: ExecutionStrategy.ExecutionStrategy
 }
 
+export type RefsA<T extends readonly SubscriptionRef.SubscriptionRef<any>[]> = {
+    [K in keyof T]: Effect.Effect.Success<T[K]>
+}
+
 
 export abstract class ReffuseNamespace<R> {
     declare ["constructor"]: ReffuseNamespaceClass<R>
 
     constructor() {
+        this.SubRef = this.SubRef.bind(this as any) as any
         this.SubscribeRefs = this.SubscribeRefs.bind(this as any) as any
         this.RefState = this.RefState.bind(this as any) as any
         this.SubscribeStream = this.SubscribeStream.bind(this as any) as any
@@ -384,19 +389,7 @@ export abstract class ReffuseNamespace<R> {
         )
     }
 
-    useSubRefFromGetSet<A, B, R>(
-        this: ReffuseNamespace<R>,
-        parent: SubscriptionRef.SubscriptionRef<B>,
-        getter: (parentValue: B) => A,
-        setter: (parentValue: B, value: A) => B,
-    ): SubscriptionSubRef.SubscriptionSubRef<A, B> {
-        return React.useMemo(
-            () => SubscriptionSubRef.makeFromGetSet(parent, getter, setter),
-            [parent],
-        )
-    }
-
-    useSubRefFromPath<B, const P extends PropertyPath.Paths<B>, R>(
+    useSubRef<B, const P extends PropertyPath.Paths<B>, R>(
         this: ReffuseNamespace<R>,
         parent: SubscriptionRef.SubscriptionRef<B>,
         path: P,
@@ -413,18 +406,18 @@ export abstract class ReffuseNamespace<R> {
     >(
         this: ReffuseNamespace<R>,
         ...refs: Refs
-    ): [...{ [K in keyof Refs]: Effect.Effect.Success<Refs[K]> }] {
+    ): RefsA<Refs> {
         const [reactStateValue, setReactStateValue] = React.useState(this.useMemo(
             () => Effect.all(refs as readonly SubscriptionRef.SubscriptionRef<any>[]),
             [],
             { doNotReExecuteOnRuntimeOrContextChange: true },
-        ) as [...{ [K in keyof Refs]: Effect.Effect.Success<Refs[K]> }])
+        ) as RefsA<Refs>)
 
         this.useFork(() => pipe(
             refs.map(ref => Stream.changesWith(ref.changes, (x, y) => x === y)),
             streams => Stream.zipLatestAll(...streams),
             Stream.runForEach(v =>
-                Effect.sync(() => setReactStateValue(v as [...{ [K in keyof Refs]: Effect.Effect.Success<Refs[K]> }]))
+                Effect.sync(() => setReactStateValue(v as RefsA<Refs>))
             ),
         ), refs)
 
@@ -491,6 +484,17 @@ export abstract class ReffuseNamespace<R> {
     }
 
 
+    SubRef<B, const P extends PropertyPath.Paths<B>, R>(
+        this: ReffuseNamespace<R>,
+        props: {
+            readonly parent: SubscriptionRef.SubscriptionRef<B>,
+            readonly path: P,
+            readonly children: (subRef: SubscriptionSubRef.SubscriptionSubRef<PropertyPath.ValueFromPath<B, P>, B>) => React.ReactNode
+        },
+    ): React.ReactNode {
+        return props.children(this.useSubRef(props.parent, props.path))
+    }
+
     SubscribeRefs<
         const Refs extends readonly SubscriptionRef.SubscriptionRef<any>[],
         R,
@@ -498,7 +502,7 @@ export abstract class ReffuseNamespace<R> {
         this: ReffuseNamespace<R>,
         props: {
             readonly refs: Refs
-            readonly children: (...args: [...{ [K in keyof Refs]: Effect.Effect.Success<Refs[K]> }]) => React.ReactNode
+            readonly children: (...args: RefsA<Refs>) => React.ReactNode
         },
     ): React.ReactNode {
         return props.children(...this.useSubscribeRefs(...props.refs))

packages/reffuse/src/types/PropertyPath.ts

@@ -1,4 +1,4 @@
-import { Array, Option, Predicate } from "effect"
+import { Array, Function, Option, Predicate } from "effect"
 
 
 export type Paths<T> = [] | (
@@ -37,57 +37,58 @@ export type AnyKey = string | number | symbol
 export type AnyPath = readonly AnyKey[]
 
 
-export const unsafeGet = <T, const P extends Paths<T>>(
-    parent: T,
-    path: P,
-): ValueFromPath<T, P> => (
-    path.reduce((acc: any, key: any) => acc?.[key], parent)
+export const unsafeGet: {
+    <T, const P extends Paths<T>>(path: P): (self: T) => ValueFromPath<T, P>
+    <T, const P extends Paths<T>>(self: T, path: P): ValueFromPath<T, P>
+} = Function.dual(2, <T, const P extends Paths<T>>(self: T, path: P): ValueFromPath<T, P> =>
+    path.reduce((acc: any, key: any) => acc?.[key], self)
 )
 
-export const get = <T, const P extends Paths<T>>(
-    parent: T,
-    path: P,
-): Option.Option<ValueFromPath<T, P>> => path.reduce(
-    (acc: Option.Option<any>, key: any): Option.Option<any> => Option.isSome(acc)
-        ? Predicate.hasProperty(acc.value, key)
-            ? Option.some(acc.value[key])
-            : Option.none()
-        : acc,
+export const get: {
+    <T, const P extends Paths<T>>(path: P): (self: T) => Option.Option<ValueFromPath<T, P>>
+    <T, const P extends Paths<T>>(self: T, path: P): Option.Option<ValueFromPath<T, P>>
+} = Function.dual(2, <T, const P extends Paths<T>>(self: T, path: P): Option.Option<ValueFromPath<T, P>> =>
+    path.reduce(
+        (acc: Option.Option<any>, key: any): Option.Option<any> => Option.isSome(acc)
+            ? Predicate.hasProperty(acc.value, key)
+                ? Option.some(acc.value[key])
+                : Option.none()
+            : acc,
 
-    Option.some(parent),
+        Option.some(self),
+    )
 )
 
-export const immutableSet = <T, const P extends Paths<T>>(
-    parent: T,
-    path: P,
-    value: ValueFromPath<T, P>,
-): Option.Option<T> => {
+export const immutableSet: {
+    <T, const P extends Paths<T>>(path: P, value: ValueFromPath<T, P>): (self: T) => ValueFromPath<T, P>
+    <T, const P extends Paths<T>>(self: T, path: P, value: ValueFromPath<T, P>): Option.Option<T>
+} = Function.dual(3, <T, const P extends Paths<T>>(self: T, path: P, value: ValueFromPath<T, P>): Option.Option<T> => {
     const key = Array.head(path as AnyPath)
     if (Option.isNone(key))
         return Option.some(value as T)
-    if (!Predicate.hasProperty(parent, key.value))
+    if (!Predicate.hasProperty(self, key.value))
         return Option.none()
 
-    const child = immutableSet<any, any>(parent[key.value], Option.getOrThrow(Array.tail(path as AnyPath)), value)
+    const child = immutableSet<any, any>(self[key.value], Option.getOrThrow(Array.tail(path as AnyPath)), value)
     if (Option.isNone(child))
         return child
 
-    if (Array.isArray(parent))
+    if (Array.isArray(self))
         return typeof key.value === "number"
             ? Option.some([
-                ...parent.slice(0, key.value),
+                ...self.slice(0, key.value),
                 child.value,
-                ...parent.slice(key.value + 1),
+                ...self.slice(key.value + 1),
             ] as T)
             : Option.none()
 
-    if (typeof parent === "object")
+    if (typeof self === "object")
         return Option.some(
             Object.assign(
-                Object.create(Object.getPrototypeOf(parent)),
-                { ...parent, [key.value]: child.value },
+                Object.create(Object.getPrototypeOf(self)),
+                { ...self, [key.value]: child.value },
             )
         )
 
     return Option.none()
-}
+})

packages/reffuse/src/types/SubscriptionSubRef.ts

@@ -3,6 +3,7 @@ import * as PropertyPath from "./PropertyPath.js"
 
 
 export const SubscriptionSubRefTypeId: unique symbol = Symbol.for("reffuse/types/SubscriptionSubRef")
+export type SubscriptionSubRefTypeId = typeof SubscriptionSubRefTypeId
 
 export interface SubscriptionSubRef<in out A, in out B> extends SubscriptionSubRef.Variance<A, B>, SubscriptionRef.SubscriptionRef<A> {
     readonly parent: SubscriptionRef.SubscriptionRef<B>