Hooks

Co-authored-by: Julien Valverdé <julien.valverde@mailo.com>
Reviewed-on: https://gitea:3000/Thilawyn/reffuse/pulls/18

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "typescript.tsdk": "node_modules/typescript/lib"
+}

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@reffuse/monorepo",
-  "packageManager": "bun@1.2.9",
+  "packageManager": "bun@1.2.13",
   "private": true,
   "workspaces": [
     "./packages/*"
@@ -15,9 +15,9 @@
     "clean:node": "rm -rf node_modules"
   },
   "devDependencies": {
-    "npm-check-updates": "^17.1.18",
+    "npm-check-updates": "^18.0.1",
     "npm-sort": "^0.0.4",
-    "turbo": "^2.5.0",
+    "turbo": "^2.5.3",
     "typescript": "^5.8.3"
   }
 }

packages/effect-components/README.md

@@ -0,0 +1,11 @@
+# Reffuse
+
+[Effect-TS](https://effect.website/) integration for React 19+ with the aim of integrating the Effect context system within React's component hierarchy, while avoiding touching React's internals.
+
+This library is in early development. While it is (almost) feature complete and mostly usable, expect bugs and quirks. Things are still being ironed out, so ideas and criticisms are more than welcome.
+
+Documentation is currently being written. In the meantime, you can take a look at the `packages/example` directory.
+
+## Peer dependencies
+- `effect` 3.13+
+- `react` & `@types/react` 19+

packages/effect-components/package.json

@@ -0,0 +1,44 @@
+{
+  "name": "effect-components",
+  "version": "0.1.0",
+  "type": "module",
+  "files": [
+    "./README.md",
+    "./dist"
+  ],
+  "license": "MIT",
+  "repository": {
+    "url": "git+https://github.com/Thiladev/reffuse.git"
+  },
+  "types": "./dist/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "default": "./dist/index.js"
+    },
+    "./types": {
+      "types": "./dist/types/index.d.ts",
+      "default": "./dist/types/index.js"
+    },
+    "./*": {
+      "types": "./dist/*.d.ts",
+      "default": "./dist/*.js"
+    }
+  },
+  "scripts": {
+    "build": "tsc",
+    "lint:tsc": "tsc --noEmit",
+    "pack": "npm pack",
+    "clean:cache": "rm -f tsconfig.tsbuildinfo",
+    "clean:dist": "rm -rf dist",
+    "clean:node": "rm -rf node_modules"
+  },
+  "peerDependencies": {
+    "@types/react": "^19.0.0",
+    "effect": "^3.15.0",
+    "react": "^19.0.0"
+  },
+  "devDependencies": {
+    "@effect/language-service": "^0.23.3"
+  }
+}

packages/effect-components/src/ReactComponent.ts

@@ -0,0 +1,72 @@
+import { Context, Effect, Function, Runtime, Scope, Tracer } from "effect"
+import type { Mutable } from "effect/Types"
+import * as React from "react"
+import * as ReactHook from "./ReactHook.js"
+
+
+export interface ReactComponent<E, R, P> {
+    (props: P): Effect.Effect<React.ReactNode, E, R>
+    readonly displayName?: string
+}
+
+export const nonReactiveTags = [Tracer.ParentSpan] as const
+
+export const withDisplayName: {
+    <C extends ReactComponent<any, any, any>>(displayName: string): (self: C) => C
+    <C extends ReactComponent<any, any, any>>(self: C, displayName: string): C
+} = Function.dual(2, <C extends ReactComponent<any, any, any>>(
+    self: C,
+    displayName: string,
+): C => {
+    (self as Mutable<C>).displayName = displayName
+    return self
+})
+
+export const useFC: {
+    <E, R, P extends {} = {}>(
+        self: ReactComponent<E, R, P>,
+        options?: ReactHook.ScopeOptions,
+    ): Effect.Effect<React.FC<P>, never, Exclude<R, Scope.Scope>>
+} = Effect.fnUntraced(function* <E, R, P extends {}>(
+    self: ReactComponent<E, R, P>,
+    options?: ReactHook.ScopeOptions,
+) {
+    const runtime = yield* Effect.runtime<Exclude<R, Scope.Scope>>()
+
+    return React.useMemo(() => function ScopeProvider(props: P) {
+        const scope = Runtime.runSync(runtime)(ReactHook.useScope(options))
+
+        const FC = React.useMemo(() => {
+            const f = (props: P) => Runtime.runSync(runtime)(
+                Effect.provideService(self(props), Scope.Scope, scope)
+            )
+            if (self.displayName) f.displayName = self.displayName
+            return f
+        }, [scope])
+
+        return React.createElement(FC, props)
+    }, Array.from(
+        Context.omit(...nonReactiveTags)(runtime.context).unsafeMap.values()
+    ))
+})
+
+export const use: {
+    <E, R, P extends {} = {}>(
+        self: ReactComponent<E, R, P>,
+        fn: (Component: React.FC<P>) => React.ReactNode,
+        options?: ReactHook.ScopeOptions,
+    ): Effect.Effect<React.ReactNode, never, Exclude<R, Scope.Scope>>
+} = Effect.fnUntraced(function*(self, fn, options) {
+    return fn(yield* useFC(self, options))
+})
+
+export const withRuntime: {
+    <E, R, P extends {} = {}>(context: React.Context<Runtime.Runtime<R>>): (self: ReactComponent<E, R, P>) => React.FC<P>
+    <E, R, P extends {} = {}>(self: ReactComponent<E, R, P>, context: React.Context<Runtime.Runtime<R>>): React.FC<P>
+} = Function.dual(2, <E, R, P extends {}>(
+    self: ReactComponent<E, R, P>,
+    context: React.Context<Runtime.Runtime<R>>,
+): React.FC<P> => function WithRuntime(props) {
+    const runtime = React.useContext(context)
+    return React.createElement(Runtime.runSync(runtime)(useFC(self)), props)
+})

packages/effect-components/src/ReactHook.ts

@@ -0,0 +1,317 @@
+import { type Context, Effect, ExecutionStrategy, Exit, type Layer, Option, pipe, PubSub, Ref, Runtime, Scope, Stream, SubscriptionRef } from "effect"
+import * as React from "react"
+import { SetStateAction } from "./types/index.js"
+
+
+export interface ScopeOptions {
+    readonly finalizerExecutionStrategy?: ExecutionStrategy.ExecutionStrategy
+    readonly finalizerExecutionMode?: "sync" | "fork"
+}
+
+
+export const useScope: {
+    (options?: ScopeOptions): Effect.Effect<Scope.Scope>
+} = Effect.fnUntraced(function* (options?: ScopeOptions) {
+    const runtime = yield* Effect.runtime()
+
+    const [isInitialRun, initialScope] = React.useMemo(() => Runtime.runSync(runtime)(
+        Effect.all([Ref.make(true), makeScope(options)])
+    ), [])
+    const [scope, setScope] = React.useState(initialScope)
+
+    React.useEffect(() => Runtime.runSync(runtime)(
+        Effect.if(isInitialRun, {
+            onTrue: () => Effect.as(
+                Ref.set(isInitialRun, false),
+                () => closeScope(scope, runtime, options),
+            ),
+
+            onFalse: () => makeScope(options).pipe(
+                Effect.tap(scope => Effect.sync(() => setScope(scope))),
+                Effect.map(scope => () => closeScope(scope, runtime, options)),
+            ),
+        })
+    ), [])
+
+    return scope
+})
+
+const makeScope = (options?: ScopeOptions) => Scope.make(options?.finalizerExecutionStrategy ?? ExecutionStrategy.sequential)
+const closeScope = (
+    scope: Scope.CloseableScope,
+    runtime: Runtime.Runtime<never>,
+    options?: ScopeOptions,
+) => {
+    switch (options?.finalizerExecutionMode ?? "sync") {
+        case "sync":
+            Runtime.runSync(runtime)(Scope.close(scope, Exit.void))
+            break
+        case "fork":
+            Runtime.runFork(runtime)(Scope.close(scope, Exit.void))
+            break
+    }
+}
+
+
+export const useMemo: {
+    <A, E, R>(
+        factory: () => Effect.Effect<A, E, R>,
+        deps: React.DependencyList,
+    ): Effect.Effect<A, E, R>
+} = Effect.fnUntraced(function* <A, E, R>(
+    factory: () => Effect.Effect<A, E, R>,
+    deps: React.DependencyList,
+) {
+    const runtime = yield* Effect.runtime()
+    return yield* React.useMemo(() => Runtime.runSync(runtime)(Effect.cached(factory())), deps)
+})
+
+export const useOnce: {
+    <A, E, R>(factory: () => Effect.Effect<A, E, R>): Effect.Effect<A, E, R>
+} = Effect.fnUntraced(function* <A, E, R>(
+    factory: () => Effect.Effect<A, E, R>
+) {
+    return yield* useMemo(factory, [])
+})
+
+export const useMemoLayer: {
+    <ROut, E, RIn>(
+        layer: Layer.Layer<ROut, E, RIn>
+    ): Effect.Effect<Context.Context<ROut>, E, RIn>
+} = Effect.fnUntraced(function* <ROut, E, RIn>(
+    layer: Layer.Layer<ROut, E, RIn>
+) {
+    return yield* useMemo(() => Effect.provide(Effect.context<ROut>(), layer), [layer])
+})
+
+
+export const useCallbackSync: {
+    <Args extends unknown[], A, E, R>(
+        callback: (...args: Args) => Effect.Effect<A, E, R>,
+        deps: React.DependencyList,
+    ): Effect.Effect<(...args: Args) => A, never, R>
+} = Effect.fnUntraced(function* <Args extends unknown[], A, E, R>(
+    callback: (...args: Args) => Effect.Effect<A, E, R>,
+    deps: React.DependencyList,
+) {
+    const runtime = yield* Effect.runtime<R>()
+    return React.useCallback((...args: Args) => Runtime.runSync(runtime)(callback(...args)), deps)
+})
+
+export const useCallbackPromise: {
+    <Args extends unknown[], A, E, R>(
+        callback: (...args: Args) => Effect.Effect<A, E, R>,
+        deps: React.DependencyList,
+    ): Effect.Effect<(...args: Args) => Promise<A>, never, R>
+} = Effect.fnUntraced(function* <Args extends unknown[], A, E, R>(
+    callback: (...args: Args) => Effect.Effect<A, E, R>,
+    deps: React.DependencyList,
+) {
+    const runtime = yield* Effect.runtime<R>()
+    return React.useCallback((...args: Args) => Runtime.runPromise(runtime)(callback(...args)), deps)
+})
+
+
+export const useEffect: {
+    <E, R>(
+        effect: () => Effect.Effect<void, E, R>,
+        deps?: React.DependencyList,
+        options?: ScopeOptions,
+    ): Effect.Effect<void, never, Exclude<R, Scope.Scope>>
+} = Effect.fnUntraced(function* <E, R>(
+    effect: () => Effect.Effect<void, E, R>,
+    deps?: React.DependencyList,
+    options?: ScopeOptions,
+) {
+    const runtime = yield* Effect.runtime<Exclude<R, Scope.Scope>>()
+
+    React.useEffect(() => {
+        const { scope, exit } = Effect.Do.pipe(
+            Effect.bind("scope", () => Scope.make(options?.finalizerExecutionStrategy ?? ExecutionStrategy.sequential)),
+            Effect.bind("exit", ({ scope }) => Effect.exit(Effect.provideService(effect(), Scope.Scope, scope))),
+            Runtime.runSync(runtime),
+        )
+
+        return () => {
+            switch (options?.finalizerExecutionMode ?? "sync") {
+                case "sync":
+                    Runtime.runSync(runtime)(Scope.close(scope, exit))
+                    break
+                case "fork":
+                    Runtime.runFork(runtime)(Scope.close(scope, exit))
+                    break
+            }
+        }
+    }, deps)
+})
+
+export const useLayoutEffect: {
+    <E, R>(
+        effect: () => Effect.Effect<void, E, R>,
+        deps?: React.DependencyList,
+        options?: ScopeOptions,
+    ): Effect.Effect<void, never, Exclude<R, Scope.Scope>>
+} = Effect.fnUntraced(function* <E, R>(
+    effect: () => Effect.Effect<void, E, R>,
+    deps?: React.DependencyList,
+    options?: ScopeOptions,
+) {
+    const runtime = yield* Effect.runtime<Exclude<R, Scope.Scope>>()
+
+    React.useLayoutEffect(() => {
+        const { scope, exit } = Effect.Do.pipe(
+            Effect.bind("scope", () => Scope.make(options?.finalizerExecutionStrategy ?? ExecutionStrategy.sequential)),
+            Effect.bind("exit", ({ scope }) => Effect.exit(Effect.provideService(effect(), Scope.Scope, scope))),
+            Runtime.runSync(runtime),
+        )
+
+        return () => {
+            switch (options?.finalizerExecutionMode ?? "sync") {
+                case "sync":
+                    Runtime.runSync(runtime)(Scope.close(scope, exit))
+                    break
+                case "fork":
+                    Runtime.runFork(runtime)(Scope.close(scope, exit))
+                    break
+            }
+        }
+    }, deps)
+})
+
+export const useFork: {
+    <E, R>(
+        effect: () => Effect.Effect<void, E, R>,
+        deps?: React.DependencyList,
+        options?: Runtime.RunForkOptions & ScopeOptions,
+    ): Effect.Effect<void, never, Exclude<R, Scope.Scope>>
+} = Effect.fnUntraced(function* <E, R>(
+    effect: () => Effect.Effect<void, E, R>,
+    deps?: React.DependencyList,
+    options?: Runtime.RunForkOptions & ScopeOptions,
+) {
+    const runtime = yield* Effect.runtime<Exclude<R, Scope.Scope>>()
+
+    React.useEffect(() => {
+        const scope = Runtime.runSync(runtime)(options?.scope
+            ? Scope.fork(options.scope, options?.finalizerExecutionStrategy ?? ExecutionStrategy.sequential)
+            : Scope.make(options?.finalizerExecutionStrategy)
+        )
+        Runtime.runFork(runtime)(Effect.provideService(effect(), Scope.Scope, scope), { ...options, scope })
+
+        return () => {
+            switch (options?.finalizerExecutionMode ?? "fork") {
+                case "sync":
+                    Runtime.runSync(runtime)(Scope.close(scope, Exit.void))
+                    break
+                case "fork":
+                    Runtime.runFork(runtime)(Scope.close(scope, Exit.void))
+                    break
+            }
+        }
+    }, deps)
+})
+
+
+export const useRefFromReactiveValue: {
+    <A>(value: A): Effect.Effect<SubscriptionRef.SubscriptionRef<A>>
+} = Effect.fnUntraced(function*(value) {
+    const ref = yield* useOnce(() => SubscriptionRef.make(value))
+    yield* useEffect(() => Ref.set(ref, value), [value])
+    return ref
+})
+
+export const useSubscribeRefs: {
+    <const Refs extends readonly SubscriptionRef.SubscriptionRef<any>[]>(
+        ...refs: Refs
+    ): Effect.Effect<{ [K in keyof Refs]: Effect.Effect.Success<Refs[K]> }>
+} = Effect.fnUntraced(function* <const Refs extends readonly SubscriptionRef.SubscriptionRef<any>[]>(
+    ...refs: Refs
+) {
+    const [reactStateValue, setReactStateValue] = React.useState(yield* useOnce(() =>
+        Effect.all(refs as readonly SubscriptionRef.SubscriptionRef<any>[])
+    ))
+
+    yield* useFork(() => pipe(
+        refs.map(ref => Stream.changesWith(ref.changes, (x, y) => x === y)),
+        streams => Stream.zipLatestAll(...streams),
+        Stream.runForEach(v =>
+            Effect.sync(() => setReactStateValue(v))
+        ),
+    ), refs)
+
+    return reactStateValue as any
+})
+
+export const useRefState: {
+    <A>(
+        ref: SubscriptionRef.SubscriptionRef<A>
+    ): Effect.Effect<readonly [A, React.Dispatch<React.SetStateAction<A>>]>
+} = Effect.fnUntraced(function* <A>(ref: SubscriptionRef.SubscriptionRef<A>) {
+    const [reactStateValue, setReactStateValue] = React.useState(yield* useOnce(() => ref))
+
+    yield* useFork(() => Stream.runForEach(
+        Stream.changesWith(ref.changes, (x, y) => x === y),
+        v => Effect.sync(() => setReactStateValue(v)),
+    ), [ref])
+
+    const setValue = yield* useCallbackSync((setStateAction: React.SetStateAction<A>) =>
+        Ref.update(ref, prevState =>
+            SetStateAction.value(setStateAction, prevState)
+        ),
+    [ref])
+
+    return [reactStateValue, setValue]
+})
+
+
+export const useStreamFromReactiveValues: {
+    <const A extends React.DependencyList>(
+        values: A
+    ): Effect.Effect<Stream.Stream<A>, never, Scope.Scope>
+} = Effect.fnUntraced(function* <const A extends React.DependencyList>(values: A) {
+    const { latest, pubsub, stream } = yield* useOnce(() => Effect.Do.pipe(
+        Effect.bind("latest", () => Ref.make(values)),
+        Effect.bind("pubsub", () => Effect.acquireRelease(PubSub.unbounded<A>(), PubSub.shutdown)),
+        Effect.let("stream", ({ latest, pubsub }) => latest.pipe(
+            Effect.flatMap(a => Effect.map(
+                Stream.fromPubSub(pubsub, { scoped: true }),
+                s => Stream.concat(Stream.make(a), s),
+            )),
+            Stream.unwrapScoped,
+        )),
+    ))
+
+    yield* useEffect(() => Ref.set(latest, values).pipe(
+        Effect.andThen(PubSub.publish(pubsub, values)),
+        Effect.unlessEffect(PubSub.isShutdown(pubsub)),
+    ), values)
+
+    return stream
+})
+
+export const useSubscribeStream: {
+    <A, E, R>(
+        stream: Stream.Stream<A, E, R>
+    ): Effect.Effect<Option.Option<A>, never, R>
+    <A extends NonNullable<unknown>, E, R>(
+        stream: Stream.Stream<A, E, R>,
+        initialValue: A,
+    ): Effect.Effect<Option.Some<A>, never, R>
+} = Effect.fnUntraced(function* <A extends NonNullable<unknown>, E, R>(
+    stream: Stream.Stream<A, E, R>,
+    initialValue?: A,
+) {
+    const [reactStateValue, setReactStateValue] = React.useState(
+        React.useMemo(() => initialValue
+            ? Option.some(initialValue)
+            : Option.none(),
+        [])
+    )
+
+    yield* useFork(() => Stream.runForEach(
+        Stream.changesWith(stream, (x, y) => x === y),
+        v => Effect.sync(() => setReactStateValue(Option.some(v))),
+    ), [stream])
+
+    return reactStateValue as Option.Some<A>
+})

packages/effect-components/src/ReactManagedRuntime.ts

@@ -0,0 +1,47 @@
+import { Effect, type Layer, ManagedRuntime, type Runtime } from "effect"
+import * as React from "react"
+
+
+export interface ReactManagedRuntime<R, ER> {
+    readonly runtime: ManagedRuntime.ManagedRuntime<R, ER>
+    readonly context: React.Context<Runtime.Runtime<R>>
+}
+
+export const make = <R, ER>(
+    layer: Layer.Layer<R, ER>,
+    memoMap?: Layer.MemoMap,
+): ReactManagedRuntime<R, ER> => ({
+    runtime: ManagedRuntime.make(layer, memoMap),
+    context: React.createContext<Runtime.Runtime<R>>(null!),
+})
+
+
+export interface AsyncProviderProps<R, ER> extends React.SuspenseProps {
+    readonly runtime: ReactManagedRuntime<R, ER>
+    readonly children?: React.ReactNode
+}
+
+export function AsyncProvider<R, ER>(
+    { runtime, children, ...suspenseProps }: AsyncProviderProps<R, ER>
+): React.ReactNode {
+    const promise = React.useMemo(() => Effect.runPromise(runtime.runtime.runtimeEffect), [runtime])
+
+    return React.createElement(
+        React.Suspense,
+        suspenseProps,
+        React.createElement(AsyncProviderInner<R, ER>, { runtime, promise, children }),
+    )
+}
+
+interface AsyncProviderInnerProps<R, ER> {
+    readonly runtime: ReactManagedRuntime<R, ER>
+    readonly promise: Promise<Runtime.Runtime<R>>
+    readonly children?: React.ReactNode
+}
+
+function AsyncProviderInner<R, ER>(
+    { runtime, promise, children }: AsyncProviderInnerProps<R, ER>
+): React.ReactNode {
+    const value = React.use(promise)
+    return React.createElement(runtime.context, { value }, children)
+}

packages/effect-components/src/index.ts

@@ -0,0 +1,3 @@
+export * as ReactComponent from "./ReactComponent.js"
+export * as ReactHook from "./ReactHook.js"
+export * as ReactManagedRuntime from "./ReactManagedRuntime.js"

packages/effect-components/src/types/PropertyPath.ts

@@ -0,0 +1,99 @@
+import { Array, Function, Option, Predicate } from "effect"
+
+
+type Prev = readonly [never, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+
+export type Paths<T, D extends number = 5, Seen = never> = [] | (
+    D extends never ? [] :
+    T extends Seen ? [] :
+    T extends readonly any[] ? ArrayPaths<T, D, Seen | T> :
+    T extends object ? ObjectPaths<T, D, Seen | T> :
+    never
+)
+
+export type ArrayPaths<T extends readonly any[], D extends number, Seen> = {
+    [K in keyof T as K extends number ? K : never]:
+        | [K]
+        | [K, ...Paths<T[K], Prev[D], Seen>]
+} extends infer O
+    ? O[keyof O]
+    : never
+
+export type ObjectPaths<T extends object, D extends number, Seen> = {
+    [K in keyof T as K extends string | number | symbol ? K : never]-?:
+        NonNullable<T[K]> extends infer V
+            ? [K] | [K, ...Paths<V, Prev[D], Seen>]
+            : never
+} extends infer O
+    ? O[keyof O]
+    : never
+
+export type ValueFromPath<T, P extends any[]> = P extends [infer Head, ...infer Tail]
+    ? Head extends keyof T
+        ? ValueFromPath<T[Head], Tail>
+        : T extends readonly any[]
+            ? Head extends number
+                ? ValueFromPath<T[number], Tail>
+                : never
+            : never
+    : T
+
+export type AnyKey = string | number | symbol
+export type AnyPath = readonly AnyKey[]
+
+
+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>>(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(self),
+    )
+)
+
+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(self, key.value))
+        return Option.none()
+
+    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(self))
+        return typeof key.value === "number"
+            ? Option.some([
+                ...self.slice(0, key.value),
+                child.value,
+                ...self.slice(key.value + 1),
+            ] as T)
+            : Option.none()
+
+    if (typeof self === "object")
+        return Option.some(
+            Object.assign(
+                Object.create(Object.getPrototypeOf(self)),
+                { ...self, [key.value]: child.value },
+            )
+        )
+
+    return Option.none()
+})

packages/effect-components/src/types/SetStateAction.ts

@@ -0,0 +1,12 @@
+import { Function } from "effect"
+import type * as React from "react"
+
+
+export const value: {
+    <S>(prevState: S): (self: React.SetStateAction<S>) => S
+    <S>(self: React.SetStateAction<S>, prevState: S): S
+} = Function.dual(2, <S>(self: React.SetStateAction<S>, prevState: S): S =>
+    typeof self === "function"
+        ? (self as (prevState: S) => S)(prevState)
+        : self
+)

packages/effect-components/src/types/SubscriptionSubRef.ts

@@ -0,0 +1,100 @@
+import { Effect, Effectable, Option, Readable, Ref, Stream, Subscribable, SubscriptionRef, SynchronizedRef, type Types, type Unify } from "effect"
+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>
+
+    readonly [Unify.typeSymbol]?: unknown
+    readonly [Unify.unifySymbol]?: SubscriptionSubRefUnify<this>
+    readonly [Unify.ignoreSymbol]?: SubscriptionSubRefUnifyIgnore
+}
+
+export declare namespace SubscriptionSubRef {
+    export interface Variance<in out A, in out B> {
+        readonly [SubscriptionSubRefTypeId]: {
+            readonly _A: Types.Invariant<A>
+            readonly _B: Types.Invariant<B>
+        }
+    }
+}
+
+export interface SubscriptionSubRefUnify<A extends { [Unify.typeSymbol]?: any }> extends SubscriptionRef.SubscriptionRefUnify<A> {
+    SubscriptionSubRef?: () => Extract<A[Unify.typeSymbol], SubscriptionSubRef<any, any>>
+}
+
+export interface SubscriptionSubRefUnifyIgnore extends SubscriptionRef.SubscriptionRefUnifyIgnore {
+    SubscriptionRef?: true
+}
+
+
+const refVariance = { _A: (_: any) => _ }
+const synchronizedRefVariance = { _A: (_: any) => _ }
+const subscriptionRefVariance = { _A: (_: any) => _ }
+const subscriptionSubRefVariance = { _A: (_: any) => _, _B: (_: any) => _ }
+
+class SubscriptionSubRefImpl<in out A, in out B> extends Effectable.Class<A> implements SubscriptionSubRef<A, B> {
+    readonly [Readable.TypeId]: Readable.TypeId = Readable.TypeId
+    readonly [Subscribable.TypeId]: Subscribable.TypeId = Subscribable.TypeId
+    readonly [Ref.RefTypeId] = refVariance
+    readonly [SynchronizedRef.SynchronizedRefTypeId] = synchronizedRefVariance
+    readonly [SubscriptionRef.SubscriptionRefTypeId] = subscriptionRefVariance
+    readonly [SubscriptionSubRefTypeId] = subscriptionSubRefVariance
+
+    readonly get: Effect.Effect<A>
+
+    constructor(
+        readonly parent: SubscriptionRef.SubscriptionRef<B>,
+        readonly getter: (parentValue: B) => A,
+        readonly setter: (parentValue: B, value: A) => B,
+    ) {
+        super()
+        this.get = Effect.map(Ref.get(this.parent), this.getter)
+    }
+
+    commit() {
+        return this.get
+    }
+
+    get changes(): Stream.Stream<A> {
+        return this.get.pipe(
+            Effect.map(a => this.parent.changes.pipe(
+                Stream.map(this.getter),
+                s => Stream.concat(Stream.make(a), s),
+            )),
+            Stream.unwrap,
+        )
+    }
+
+    modify<C>(f: (a: A) => readonly [C, A]): Effect.Effect<C> {
+        return this.modifyEffect(a => Effect.succeed(f(a)))
+    }
+
+    modifyEffect<C, E, R>(f: (a: A) => Effect.Effect<readonly [C, A], E, R>): Effect.Effect<C, E, R> {
+        return Effect.Do.pipe(
+            Effect.bind("b", () => Ref.get(this.parent)),
+            Effect.bind("ca", ({ b }) => f(this.getter(b))),
+            Effect.tap(({ b, ca: [, a] }) => Ref.set(this.parent, this.setter(b, a))),
+            Effect.map(({ ca: [c] }) => c),
+        )
+    }
+}
+
+
+export const makeFromGetSet = <A, B>(
+    parent: SubscriptionRef.SubscriptionRef<B>,
+    getter: (parentValue: B) => A,
+    setter: (parentValue: B, value: A) => B,
+): SubscriptionSubRef<A, B> => new SubscriptionSubRefImpl(parent, getter, setter)
+
+export const makeFromPath = <B, const P extends PropertyPath.Paths<B>>(
+    parent: SubscriptionRef.SubscriptionRef<B>,
+    path: P,
+): SubscriptionSubRef<PropertyPath.ValueFromPath<B, P>, B> => new SubscriptionSubRefImpl(
+    parent,
+    parentValue => Option.getOrThrow(PropertyPath.get(parentValue, path)),
+    (parentValue, value) => Option.getOrThrow(PropertyPath.immutableSet(parentValue, path, value)),
+)

packages/effect-components/src/types/index.ts

@@ -0,0 +1,3 @@
+export * as PropertyPath from "./PropertyPath.js"
+export * as SetStateAction from "./SetStateAction.js"
+export * as SubscriptionSubRef from "./SubscriptionSubRef.js"

packages/effect-components/tsconfig.json

@@ -0,0 +1,33 @@
+{
+  "compilerOptions": {
+    // Enable latest features
+    "lib": ["ESNext", "DOM"],
+    "target": "ESNext",
+    "module": "NodeNext",
+    "moduleDetection": "force",
+    "jsx": "react-jsx",
+    // "allowJs": true,
+
+    // Bundler mode
+    "moduleResolution": "NodeNext",
+    // "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    // "noEmit": true,
+
+    // Best practices
+    "strict": true,
+    "skipLibCheck": true,
+    "noFallthroughCasesInSwitch": true,
+
+    // Some stricter flags (disabled by default)
+    "noUnusedLocals": false,
+    "noUnusedParameters": false,
+    "noPropertyAccessFromIndexSignature": false,
+
+    // Build
+    "outDir": "./dist",
+    "declaration": true
+  },
+
+  "include": ["./src"]
+}

packages/example/package.json

@@ -11,41 +11,41 @@
     "preview": "vite preview"
   },
   "devDependencies": {
-    "@eslint/js": "^9.24.0",
-    "@tanstack/react-router": "^1.115.3",
-    "@tanstack/react-router-devtools": "^1.115.3",
-    "@tanstack/router-plugin": "^1.115.3",
+    "@eslint/js": "^9.26.0",
+    "@tanstack/react-router": "^1.120.3",
+    "@tanstack/react-router-devtools": "^1.120.3",
+    "@tanstack/router-plugin": "^1.120.3",
     "@thilawyn/thilaschema": "^0.1.4",
-    "@types/react": "^19.1.1",
-    "@types/react-dom": "^19.1.2",
-    "@vitejs/plugin-react": "^4.3.4",
-    "eslint": "^9.24.0",
+    "@types/react": "^19.1.4",
+    "@types/react-dom": "^19.1.5",
+    "@vitejs/plugin-react": "^4.4.1",
+    "eslint": "^9.26.0",
     "eslint-plugin-react-hooks": "^5.2.0",
-    "eslint-plugin-react-refresh": "^0.4.19",
-    "globals": "^16.0.0",
+    "eslint-plugin-react-refresh": "^0.4.20",
+    "globals": "^16.1.0",
     "react": "^19.1.0",
     "react-dom": "^19.1.0",
-    "typescript-eslint": "^8.29.1",
-    "vite": "^6.2.6"
+    "typescript-eslint": "^8.32.1",
+    "vite": "^6.3.5"
   },
   "dependencies": {
-    "@effect/platform": "^0.80.8",
-    "@effect/platform-browser": "^0.59.8",
+    "@effect/platform": "^0.82.1",
+    "@effect/platform-browser": "^0.62.1",
     "@radix-ui/themes": "^3.2.1",
     "@reffuse/extension-lazyref": "workspace:*",
     "@reffuse/extension-query": "workspace:*",
     "@typed/async-data": "^0.13.1",
     "@typed/id": "^0.17.2",
     "@typed/lazy-ref": "^0.3.3",
-    "effect": "^3.14.8",
-    "lucide-react": "^0.487.0",
+    "effect": "^3.15.1",
+    "lucide-react": "^0.510.0",
     "mobx": "^6.13.7",
     "reffuse": "workspace:*"
   },
   "overrides": {
-    "effect": "^3.14.8",
-    "@effect/platform": "^0.80.8",
-    "@effect/platform-browser": "^0.59.8",
+    "effect": "^3.15.1",
+    "@effect/platform": "^0.82.1",
+    "@effect/platform-browser": "^0.62.1",
     "@typed/lazy-ref": "^0.3.3",
     "@typed/async-data": "^0.13.1"
   }

packages/example/src/VQueryErrorHandler.tsx

@@ -1,15 +1,15 @@
 import { AlertDialog, Button, Flex, Text } from "@radix-ui/themes"
 import { Cause, Console, Effect, Either, flow, Match, Option, Stream } from "effect"
 import { useState } from "react"
-import { AppQueryErrorHandler } from "./query"
 import { R } from "./reffuse"
+import { AppQueryErrorHandler } from "./services"
 
 
 export function VQueryErrorHandler() {
     const [open, setOpen] = useState(false)
 
     const error = R.useSubscribeStream(
-        R.useMemo(() => AppQueryErrorHandler.pipe(
+        R.useMemo(() => AppQueryErrorHandler.AppQueryErrorHandler.pipe(
             Effect.map(handler => handler.errors.pipe(
                 Stream.changes,
                 Stream.tap(Console.error),

packages/example/src/domain/Todo.ts

@@ -1,6 +1,5 @@
 import { ThSchema } from "@thilawyn/thilaschema"
-import { GetRandomValues, makeUuid4 } from "@typed/id"
-import { Effect, Schema } from "effect"
+import { Schema } from "effect"
 
 
 export class Todo extends Schema.Class<Todo>("Todo")({
@@ -18,9 +17,4 @@ export const TodoFromJsonStruct = Schema.Struct({
     ThSchema.assertEncodedJsonifiable
 )
 
-export const TodoFromJson = TodoFromJsonStruct.pipe(Schema.compose(Todo))
-
-
-export const generateUniqueID = makeUuid4.pipe(
-    Effect.provide(GetRandomValues.CryptoRandom)
-)
+export const TodoFromJson = Schema.compose(TodoFromJsonStruct, Todo)

packages/example/src/main.tsx

@@ -5,14 +5,14 @@ import { Layer } from "effect"
 import { StrictMode } from "react"
 import { createRoot } from "react-dom/client"
 import { ReffuseRuntime } from "reffuse"
-import { AppQueryClient, AppQueryErrorHandler } from "./query"
 import { RootContext } from "./reffuse"
 import { routeTree } from "./routeTree.gen"
+import { AppQueryClient, AppQueryErrorHandler } from "./services"
 
 
 const layer = Layer.empty.pipe(
-    Layer.provideMerge(AppQueryClient.Live),
-    Layer.provideMerge(AppQueryErrorHandler.Live),
+    Layer.provideMerge(AppQueryClient.AppQueryClient.Default),
+    Layer.provideMerge(AppQueryErrorHandler.AppQueryErrorHandler.Default),
     Layer.provideMerge(Clipboard.layer),
     Layer.provideMerge(Geolocation.layer),
     Layer.provideMerge(Permissions.layer),

packages/example/src/query.ts

@@ -1,21 +0,0 @@
-import { HttpClientError } from "@effect/platform"
-import { QueryClient, QueryErrorHandler } from "@reffuse/extension-query"
-import { Effect } from "effect"
-
-
-export class AppQueryErrorHandler extends QueryErrorHandler.Service<AppQueryErrorHandler,
-    HttpClientError.HttpClientError
->()(
-    "AppQueryErrorHandler",
-
-    (self, failure, defect) => self.pipe(
-        Effect.catchTags({
-            RequestError: failure,
-            ResponseError: failure,
-        }),
-
-        Effect.catchAllDefect(defect),
-    ),
-) {}
-
-export class AppQueryClient extends QueryClient.Service<AppQueryClient>()({ ErrorHandler: AppQueryErrorHandler }) {}

packages/example/src/query/services/Uuid4Query.ts

@@ -1,10 +1,10 @@
-import { QueryService } from "@reffuse/extension-query"
+import { QueryRunner } from "@reffuse/extension-query"
 import { ParseResult, Schema } from "effect"
 
 
 export const Result = Schema.Array(Schema.String)
 
-export class Uuid4Query extends QueryService.Tag("Uuid4Query")<Uuid4Query,
+export class Uuid4Query extends QueryRunner.Tag("Uuid4Query")<Uuid4Query,
     readonly ["uuid4", number],
     typeof Result.Type,
     ParseResult.ParseError

packages/example/src/query/views/Uuid4QueryService.tsx

@@ -8,7 +8,7 @@ export function Uuid4QueryService() {
     const runFork = R.useRunFork()
 
     const query = R.useMemo(() => Uuid4Query.Uuid4Query, [])
-    const [state] = R.useRefState(query.state)
+    const [state] = R.useSubscribeRefs(query.stateRef)
 
 
     return (

packages/example/src/reffuse.ts

@@ -3,12 +3,12 @@ import { Clipboard, Geolocation, Permissions } from "@effect/platform-browser"
 import { LazyRefExtension } from "@reffuse/extension-lazyref"
 import { QueryExtension } from "@reffuse/extension-query"
 import { Reffuse, ReffuseContext } from "reffuse"
-import { AppQueryClient, AppQueryErrorHandler } from "./query"
+import { AppQueryClient, AppQueryErrorHandler } from "./services"
 
 
 export const RootContext = ReffuseContext.make<
-    | AppQueryClient
-    | AppQueryErrorHandler
+    | AppQueryClient.AppQueryClient
+    | AppQueryErrorHandler.AppQueryErrorHandler
     | Clipboard.Clipboard
     | Geolocation.Geolocation
     | Permissions.Permissions

packages/example/src/routeTree.gen.ts

@@ -16,9 +16,11 @@ import { Route as TimeImport } from './routes/time'
 import { Route as TestsImport } from './routes/tests'
 import { Route as PromiseImport } from './routes/promise'
 import { Route as LazyrefImport } from './routes/lazyref'
+import { Route as EffectComponentTestsImport } from './routes/effect-component-tests'
 import { Route as CountImport } from './routes/count'
 import { Route as BlankImport } from './routes/blank'
 import { Route as IndexImport } from './routes/index'
+import { Route as StreamsPullImport } from './routes/streams/pull'
 import { Route as QueryUsequeryImport } from './routes/query/usequery'
 import { Route as QueryUsemutationImport } from './routes/query/usemutation'
 import { Route as QueryServiceImport } from './routes/query/service'
@@ -55,6 +57,12 @@ const LazyrefRoute = LazyrefImport.update({
   getParentRoute: () => rootRoute,
 } as any)
 
+const EffectComponentTestsRoute = EffectComponentTestsImport.update({
+  id: '/effect-component-tests',
+  path: '/effect-component-tests',
+  getParentRoute: () => rootRoute,
+} as any)
+
 const CountRoute = CountImport.update({
   id: '/count',
   path: '/count',
@@ -73,6 +81,12 @@ const IndexRoute = IndexImport.update({
   getParentRoute: () => rootRoute,
 } as any)
 
+const StreamsPullRoute = StreamsPullImport.update({
+  id: '/streams/pull',
+  path: '/streams/pull',
+  getParentRoute: () => rootRoute,
+} as any)
+
 const QueryUsequeryRoute = QueryUsequeryImport.update({
   id: '/query/usequery',
   path: '/query/usequery',
@@ -116,6 +130,13 @@ declare module '@tanstack/react-router' {
       preLoaderRoute: typeof CountImport
       parentRoute: typeof rootRoute
     }
+    '/effect-component-tests': {
+      id: '/effect-component-tests'
+      path: '/effect-component-tests'
+      fullPath: '/effect-component-tests'
+      preLoaderRoute: typeof EffectComponentTestsImport
+      parentRoute: typeof rootRoute
+    }
     '/lazyref': {
       id: '/lazyref'
       path: '/lazyref'
@@ -172,6 +193,13 @@ declare module '@tanstack/react-router' {
       preLoaderRoute: typeof QueryUsequeryImport
       parentRoute: typeof rootRoute
     }
+    '/streams/pull': {
+      id: '/streams/pull'
+      path: '/streams/pull'
+      fullPath: '/streams/pull'
+      preLoaderRoute: typeof StreamsPullImport
+      parentRoute: typeof rootRoute
+    }
   }
 }
 
@@ -181,6 +209,7 @@ export interface FileRoutesByFullPath {
   '/': typeof IndexRoute
   '/blank': typeof BlankRoute
   '/count': typeof CountRoute
+  '/effect-component-tests': typeof EffectComponentTestsRoute
   '/lazyref': typeof LazyrefRoute
   '/promise': typeof PromiseRoute
   '/tests': typeof TestsRoute
@@ -189,12 +218,14 @@ export interface FileRoutesByFullPath {
   '/query/service': typeof QueryServiceRoute
   '/query/usemutation': typeof QueryUsemutationRoute
   '/query/usequery': typeof QueryUsequeryRoute
+  '/streams/pull': typeof StreamsPullRoute
 }
 
 export interface FileRoutesByTo {
   '/': typeof IndexRoute
   '/blank': typeof BlankRoute
   '/count': typeof CountRoute
+  '/effect-component-tests': typeof EffectComponentTestsRoute
   '/lazyref': typeof LazyrefRoute
   '/promise': typeof PromiseRoute
   '/tests': typeof TestsRoute
@@ -203,6 +234,7 @@ export interface FileRoutesByTo {
   '/query/service': typeof QueryServiceRoute
   '/query/usemutation': typeof QueryUsemutationRoute
   '/query/usequery': typeof QueryUsequeryRoute
+  '/streams/pull': typeof StreamsPullRoute
 }
 
 export interface FileRoutesById {
@@ -210,6 +242,7 @@ export interface FileRoutesById {
   '/': typeof IndexRoute
   '/blank': typeof BlankRoute
   '/count': typeof CountRoute
+  '/effect-component-tests': typeof EffectComponentTestsRoute
   '/lazyref': typeof LazyrefRoute
   '/promise': typeof PromiseRoute
   '/tests': typeof TestsRoute
@@ -218,6 +251,7 @@ export interface FileRoutesById {
   '/query/service': typeof QueryServiceRoute
   '/query/usemutation': typeof QueryUsemutationRoute
   '/query/usequery': typeof QueryUsequeryRoute
+  '/streams/pull': typeof StreamsPullRoute
 }
 
 export interface FileRouteTypes {
@@ -226,6 +260,7 @@ export interface FileRouteTypes {
     | '/'
     | '/blank'
     | '/count'
+    | '/effect-component-tests'
     | '/lazyref'
     | '/promise'
     | '/tests'
@@ -234,11 +269,13 @@ export interface FileRouteTypes {
     | '/query/service'
     | '/query/usemutation'
     | '/query/usequery'
+    | '/streams/pull'
   fileRoutesByTo: FileRoutesByTo
   to:
     | '/'
     | '/blank'
     | '/count'
+    | '/effect-component-tests'
     | '/lazyref'
     | '/promise'
     | '/tests'
@@ -247,11 +284,13 @@ export interface FileRouteTypes {
     | '/query/service'
     | '/query/usemutation'
     | '/query/usequery'
+    | '/streams/pull'
   id:
     | '__root__'
     | '/'
     | '/blank'
     | '/count'
+    | '/effect-component-tests'
     | '/lazyref'
     | '/promise'
     | '/tests'
@@ -260,6 +299,7 @@ export interface FileRouteTypes {
     | '/query/service'
     | '/query/usemutation'
     | '/query/usequery'
+    | '/streams/pull'
   fileRoutesById: FileRoutesById
 }
 
@@ -267,6 +307,7 @@ export interface RootRouteChildren {
   IndexRoute: typeof IndexRoute
   BlankRoute: typeof BlankRoute
   CountRoute: typeof CountRoute
+  EffectComponentTestsRoute: typeof EffectComponentTestsRoute
   LazyrefRoute: typeof LazyrefRoute
   PromiseRoute: typeof PromiseRoute
   TestsRoute: typeof TestsRoute
@@ -275,12 +316,14 @@ export interface RootRouteChildren {
   QueryServiceRoute: typeof QueryServiceRoute
   QueryUsemutationRoute: typeof QueryUsemutationRoute
   QueryUsequeryRoute: typeof QueryUsequeryRoute
+  StreamsPullRoute: typeof StreamsPullRoute
 }
 
 const rootRouteChildren: RootRouteChildren = {
   IndexRoute: IndexRoute,
   BlankRoute: BlankRoute,
   CountRoute: CountRoute,
+  EffectComponentTestsRoute: EffectComponentTestsRoute,
   LazyrefRoute: LazyrefRoute,
   PromiseRoute: PromiseRoute,
   TestsRoute: TestsRoute,
@@ -289,6 +332,7 @@ const rootRouteChildren: RootRouteChildren = {
   QueryServiceRoute: QueryServiceRoute,
   QueryUsemutationRoute: QueryUsemutationRoute,
   QueryUsequeryRoute: QueryUsequeryRoute,
+  StreamsPullRoute: StreamsPullRoute,
 }
 
 export const routeTree = rootRoute
@@ -304,6 +348,7 @@ export const routeTree = rootRoute
         "/",
         "/blank",
         "/count",
+        "/effect-component-tests",
         "/lazyref",
         "/promise",
         "/tests",
@@ -311,7 +356,8 @@ export const routeTree = rootRoute
         "/todos",
         "/query/service",
         "/query/usemutation",
-        "/query/usequery"
+        "/query/usequery",
+        "/streams/pull"
       ]
     },
     "/": {
@@ -323,6 +369,9 @@ export const routeTree = rootRoute
     "/count": {
       "filePath": "count.tsx"
     },
+    "/effect-component-tests": {
+      "filePath": "effect-component-tests.tsx"
+    },
     "/lazyref": {
       "filePath": "lazyref.tsx"
     },
@@ -346,6 +395,9 @@ export const routeTree = rootRoute
     },
     "/query/usequery": {
       "filePath": "query/usequery.tsx"
+    },
+    "/streams/pull": {
+      "filePath": "streams/pull.tsx"
     }
   }
 }

packages/example/src/routes/count.tsx

@@ -1,6 +1,6 @@
 import { R } from "@/reffuse"
 import { createFileRoute } from "@tanstack/react-router"
-import { Ref } from "effect"
+import { Effect, Ref } from "effect"
 
 
 export const Route = createFileRoute("/count")({
@@ -11,14 +11,13 @@ function Count() {
 
     const runSync = R.useRunSync()
 
-    const countRef = R.useRef(0)
-    const [count] = R.useRefState(countRef)
+    const countRef = R.useRef(() => Effect.succeed(0))
+    const [count] = R.useSubscribeRefs(countRef)
 
 
     return (
         <div className="container mx-auto">
-            {/* <button onClick={() => setCount((count) => count + 1)}> */}
-            <button onClick={() => Ref.update(countRef, count => count + 1).pipe(runSync)}>
+            <button onClick={() => runSync(Ref.update(countRef, count => count + 1))}>
                 count is {count}
             </button>
         </div>

packages/example/src/routes/effect-component-tests.tsx

@@ -0,0 +1,105 @@
+import { Box, TextField } from "@radix-ui/themes"
+import { createFileRoute } from "@tanstack/react-router"
+import { Array, Console, Effect, Layer, pipe, Ref, Runtime, SubscriptionRef } from "effect"
+import { ReactComponent, ReactHook, ReactManagedRuntime } from "effect-components"
+
+
+const LogLive = Layer.scopedDiscard(Effect.acquireRelease(
+    Console.log("Runtime built."),
+    () => Console.log("Runtime destroyed."),
+))
+
+class TestService extends Effect.Service<TestService>()("TestService", {
+    effect: Effect.bind(Effect.Do, "ref", () => SubscriptionRef.make("value")),
+}) {}
+
+class SubService extends Effect.Service<SubService>()("SubService", {
+    effect: Effect.bind(Effect.Do, "ref", () => SubscriptionRef.make("subvalue")),
+}) {}
+
+const runtime = ReactManagedRuntime.make(Layer.empty.pipe(
+    Layer.provideMerge(LogLive),
+    Layer.provideMerge(TestService.Default),
+))
+
+
+export const Route = createFileRoute("/effect-component-tests")({
+    component: RouteComponent,
+})
+
+function RouteComponent() {
+    return (
+        <ReactManagedRuntime.AsyncProvider runtime={runtime}>
+            <MyRoute />
+        </ReactManagedRuntime.AsyncProvider>
+    )
+}
+
+const MyRoute = pipe(
+    Effect.fn(function*() {
+        const runtime = yield* Effect.runtime()
+
+        const service = yield* TestService
+        const [value] = yield* ReactHook.useSubscribeRefs(service.ref)
+
+        // const MyTestComponentFC = yield* Effect.provide(
+        //     ReactComponent.useFC(MyTestComponent),
+        //     yield* ReactHook.useMemoLayer(SubService.Default),
+        // )
+
+        return <>
+            <Box>
+                <TextField.Root
+                    value={value}
+                    onChange={e => Runtime.runSync(runtime)(Ref.set(service.ref, e.target.value))}
+                />
+            </Box>
+
+            {/* {yield* ReactComponent.use(MyTestComponent, C => <C />).pipe(
+                Effect.provide(yield* ReactHook.useMemoLayer(SubService.Default))
+            )} */}
+
+            {/* {Array.range(0, 3).map(k =>
+                <MyTestComponentFC key={k} />
+            )} */}
+
+            {yield* pipe(
+                Array.range(0, 3),
+                Array.map(k => ReactComponent.use(MyTestComponent, FC =>
+                    <FC key={k} />
+                )),
+                Effect.all,
+                Effect.provide(yield* ReactHook.useMemoLayer(SubService.Default)),
+            )}
+        </>
+    }),
+
+    ReactComponent.withDisplayName("MyRoute"),
+    ReactComponent.withRuntime(runtime.context),
+)
+
+
+const MyTestComponent = pipe(
+    Effect.fn(function*() {
+        const runtime = yield* Effect.runtime()
+
+        const service = yield* SubService
+        const [value] = yield* ReactHook.useSubscribeRefs(service.ref)
+
+        // yield* ReactHook.useMemo(() => Effect.andThen(
+        //     Effect.addFinalizer(() => Console.log("MyTestComponent umounted")),
+        //     Console.log("MyTestComponent mounted"),
+        // ), [])
+
+        return <>
+            <Box>
+                <TextField.Root
+                    value={value}
+                    onChange={e => Runtime.runSync(runtime)(Ref.set(service.ref, e.target.value))}
+                />
+            </Box>
+        </>
+    }),
+
+    ReactComponent.withDisplayName("MyTestComponent"),
+)

packages/example/src/routes/query/service.tsx

@@ -4,7 +4,7 @@ import { Uuid4QueryService } from "@/query/views/Uuid4QueryService"
 import { R } from "@/reffuse"
 import { HttpClient } from "@effect/platform"
 import { createFileRoute } from "@tanstack/react-router"
-import { Console, Effect, Schema } from "effect"
+import { Console, Effect, Layer, Schema } from "effect"
 import { useMemo } from "react"
 
 
@@ -14,18 +14,21 @@ export const Route = createFileRoute("/query/service")({
 
 function RouteComponent() {
     const query = R.useQuery({
-        key: R.useStreamFromValues(["uuid4", 10 as number]),
+        key: R.useStreamFromReactiveValues(["uuid4", 10 as number]),
         query: ([, count]) => Console.log(`Querying ${ count } IDs...`).pipe(
             Effect.andThen(Effect.sleep("500 millis")),
-            Effect.andThen(HttpClient.get(`https://www.uuidtools.com/api/generate/v4/count/${ count }`)),
-            HttpClient.withTracerPropagation(false),
+            Effect.andThen(Effect.map(
+                HttpClient.HttpClient,
+                HttpClient.withTracerPropagation(false),
+            )),
+            Effect.flatMap(client => client.get(`https://www.uuidtools.com/api/generate/v4/count/${ count }`)),
             Effect.flatMap(res => res.json),
             Effect.flatMap(Schema.decodeUnknown(Uuid4Query.Result)),
             Effect.scoped,
         ),
     })
 
-    const layer = useMemo(() => query.layer(Uuid4Query.Uuid4Query), [query])
+    const layer = useMemo(() => Layer.succeed(Uuid4Query.Uuid4Query, query), [query])
 
     return (
         <QueryContext.Provider layer={layer}>

packages/example/src/routes/query/usemutation.tsx

@@ -29,15 +29,18 @@ function RouteComponent() {
             Effect.tap(() => QueryProgress.QueryProgress.update(() =>
                 AsyncData.Progress.make({ loaded: 50, total: Option.some(100) })
             )),
-            Effect.andThen(HttpClient.get(`https://www.uuidtools.com/api/generate/v4/count/${ count }`)),
-            HttpClient.withTracerPropagation(false),
+            Effect.andThen(Effect.map(
+                HttpClient.HttpClient,
+                HttpClient.withTracerPropagation(false),
+            )),
+            Effect.flatMap(client => client.get(`https://www.uuidtools.com/api/generate/v4/count/${ count }`)),
             Effect.flatMap(res => res.json),
             Effect.flatMap(Schema.decodeUnknown(Result)),
             Effect.scoped,
         )
     })
 
-    const [state] = R.useSubscribeRefs(mutation.state)
+    const [state] = R.useSubscribeRefs(mutation.stateRef)
 
 
     return (

packages/example/src/routes/query/usequery.tsx

@@ -20,18 +20,21 @@ function RouteComponent() {
     const [count, setCount] = useState(1)
 
     const query = R.useQuery({
-        key: R.useStreamFromValues(["uuid4", count]),
+        key: R.useStreamFromReactiveValues(["uuid4", count]),
         query: ([, count]) => Console.log(`Querying ${ count } IDs...`).pipe(
             Effect.andThen(Effect.sleep("500 millis")),
-            Effect.andThen(HttpClient.get(`https://www.uuidtools.com/api/generate/v4/count/${ count }`)),
-            HttpClient.withTracerPropagation(false),
+            Effect.andThen(Effect.map(
+                HttpClient.HttpClient,
+                HttpClient.withTracerPropagation(false),
+            )),
+            Effect.flatMap(client => client.get(`https://www.uuidtools.com/api/generate/v4/count/${ count }`)),
             Effect.flatMap(res => res.json),
             Effect.flatMap(Schema.decodeUnknown(Result)),
             Effect.scoped,
         ),
     })
 
-    const [state] = R.useSubscribeRefs(query.state)
+    const [state] = R.useSubscribeRefs(query.stateRef)
 
 
     return (

packages/example/src/routes/streams/pull.tsx

@@ -0,0 +1,34 @@
+import { R } from "@/reffuse"
+import { Button, Flex, Text } from "@radix-ui/themes"
+import { createFileRoute } from "@tanstack/react-router"
+import { Chunk, Effect, Exit, Option, Queue, Random, Scope, Stream } from "effect"
+import { useMemo, useState } from "react"
+
+
+export const Route = createFileRoute("/streams/pull")({
+    component: RouteComponent
+})
+
+function RouteComponent() {
+    const stream = useMemo(() => Stream.repeatEffect(Random.nextInt), [])
+    const streamScope = R.useScope([stream], { finalizerExecutionMode: "fork" })
+
+    const queue = R.useMemo(() => Effect.provideService(Stream.toQueueOfElements(stream), Scope.Scope, streamScope), [streamScope])
+
+    const [value, setValue] = useState(Option.none<number>())
+    const pullLatest = R.useCallbackSync(() => Queue.takeAll(queue).pipe(
+        Effect.flatMap(Chunk.last),
+        Effect.flatMap(Exit.matchEffect({
+            onSuccess: Effect.succeed,
+            onFailure: Effect.fail,
+        })),
+        Effect.tap(v => Effect.sync(() => setValue(Option.some(v)))),
+    ), [queue])
+
+    return (
+        <Flex direction="column" align="center" gap="2">
+            {Option.isSome(value) && <Text>{value.value}</Text>}
+            <Button onClick={pullLatest}>Pull latest</Button>
+        </Flex>
+    )
+}

packages/example/src/routes/tests.tsx

@@ -2,7 +2,21 @@ import { R } from "@/reffuse"
 import { Button, Flex, Text } from "@radix-ui/themes"
 import { createFileRoute } from "@tanstack/react-router"
 import { GetRandomValues, makeUuid4 } from "@typed/id"
-import { Console, Effect, Ref } from "effect"
+import { Console, Effect, Option } from "effect"
+import { useEffect, useState } from "react"
+
+
+interface Node {
+    value: string
+    left?: Leaf
+    right?: Leaf
+}
+interface Leaf {
+    node: Node
+}
+
+
+const makeUuid = Effect.provide(makeUuid4, GetRandomValues.CryptoRandom)
 
 
 export const Route = createFileRoute("/tests")({
@@ -10,48 +24,39 @@ export const Route = createFileRoute("/tests")({
 })
 
 function RouteComponent() {
-    const deepRef = R.useRef({ value: "poulet" })
-    const deepValueRef = R.useSubRef(deepRef, ["value"])
+    const runSync = R.useRunSync()
 
-    // const value = R.useMemoScoped(Effect.addFinalizer(() => Console.log("cleanup")).pipe(
-    //     Effect.andThen(makeUuid4),
-    //     Effect.provide(GetRandomValues.CryptoRandom),
-    // ), [])
-    // console.log(value)
-
-    R.useFork(() => Effect.addFinalizer(() => Console.log("cleanup")).pipe(
-        Effect.andThen(Console.log("ouient")),
-        Effect.delay("1 second"),
+    const [uuid, setUuid] = useState(R.useMemo(() => makeUuid, []))
+    const generateUuid = R.useCallbackSync(() => makeUuid.pipe(
+        Effect.tap(v => Effect.sync(() => setUuid(v)))
     ), [])
 
+    const uuidStream = R.useStreamFromReactiveValues([uuid])
+    const uuidStreamLatestValue = R.useSubscribeStream(uuidStream)
 
-    const uuidRef = R.useRef("none")
-    const anotherRef = R.useRef(69)
+    const [, scopeLayer] = R.useScope([uuid])
+
+    useEffect(() => Effect.addFinalizer(() => Console.log("Scope cleanup!")).pipe(
+        Effect.andThen(Console.log("Scope changed")),
+        Effect.provide(scopeLayer),
+        runSync,
+    ), [scopeLayer, runSync])
 
 
-    const logValue = R.useCallbackSync(Effect.fn(function*(value: string) {
-        yield* Effect.log(value)
-    }), [])
-
-    const generateUuid = R.useCallbackSync(() => makeUuid4.pipe(
-        Effect.provide(GetRandomValues.CryptoRandom),
-        Effect.tap(v => Ref.set(uuidRef, v)),
-        Effect.tap(v => Ref.set(deepValueRef, v)),
-    ), [])
+    const nodeRef = R.useRef(() => Effect.succeed<Node>({ value: "prout" }))
+    const nodeValueRef = R.useSubRefFromPath(nodeRef, ["value"])
 
 
     return (
-        <Flex direction="row" justify="center" align="center" gap="2">
-            <R.SubscribeRefs refs={[uuidRef, anotherRef]}>
-                {(uuid, anotherRef) => <Text>{uuid} / {anotherRef}</Text>}
-            </R.SubscribeRefs>
-
-            <R.SubscribeRefs refs={[deepRef, deepValueRef]}>
-                {(deep, deepValue) => <Text>{JSON.stringify(deep)} / {deepValue}</Text>}
-            </R.SubscribeRefs>
-
-            <Button onClick={() => logValue("test")}>Log value</Button>
-            <Button onClick={() => generateUuid()}>Generate UUID</Button>
+        <Flex direction="column" justify="center" align="center" gap="2">
+            <Text>{uuid}</Text>
+            <Button onClick={generateUuid}>Generate UUID</Button>
+            <Text>
+                {Option.match(uuidStreamLatestValue, {
+                    onSome: ([v]) => v,
+                    onNone: () => <></>,
+                })}
+            </Text>
         </Flex>
     )
 }

packages/example/src/routes/todos.tsx

@@ -26,7 +26,7 @@ function Todos() {
 
     return (
         <Container>
-            <TodosContext.Provider layer={todosLayer}>
+            <TodosContext.Provider layer={todosLayer} finalizerExecutionMode="fork">
                 <VTodos />
             </TodosContext.Provider>
         </Container>

packages/example/src/services/AppQueryClient.ts

@@ -0,0 +1,7 @@
+import { QueryClient } from "@reffuse/extension-query"
+import * as AppQueryErrorHandler from "./AppQueryErrorHandler"
+
+
+export class AppQueryClient extends QueryClient.Service<AppQueryClient>()({
+    errorHandler: AppQueryErrorHandler.AppQueryErrorHandler
+}) {}

packages/example/src/services/AppQueryErrorHandler.ts

@@ -0,0 +1,13 @@
+import { HttpClientError } from "@effect/platform"
+import { QueryErrorHandler } from "@reffuse/extension-query"
+import { Effect } from "effect"
+
+
+export class AppQueryErrorHandler extends Effect.Service<AppQueryErrorHandler>()("AppQueryErrorHandler", {
+    effect: QueryErrorHandler.make<HttpClientError.HttpClientError>()(
+        (self, failure, defect) => self.pipe(
+            Effect.catchTag("RequestError", "ResponseError", failure),
+            Effect.catchAllDefect(defect),
+        )
+    )
+}) {}

packages/example/src/services/index.ts

@@ -1 +1,2 @@
-export {}
+export * as AppQueryClient from "./AppQueryClient"
+export * as AppQueryErrorHandler from "./AppQueryErrorHandler"

packages/example/src/todos/services/TodosState.ts

@@ -2,68 +2,43 @@ import { Todo } from "@/domain"
 import { KeyValueStore } from "@effect/platform"
 import { BrowserKeyValueStore } from "@effect/platform-browser"
 import { PlatformError } from "@effect/platform/Error"
-import { Chunk, Context, Effect, identity, Layer, ParseResult, Ref, Schema, SubscriptionRef } from "effect"
+import { Chunk, Context, Effect, identity, Layer, ParseResult, Ref, Schema, Stream, SubscriptionRef } from "effect"
 
 
 export class TodosState extends Context.Tag("TodosState")<TodosState, {
     readonly todos: SubscriptionRef.SubscriptionRef<Chunk.Chunk<Todo.Todo>>
-
-    readonly readFromLocalStorage: Effect.Effect<void, PlatformError | ParseResult.ParseError>
-    readonly saveToLocalStorage: Effect.Effect<void, PlatformError | ParseResult.ParseError>
-
-    readonly prepend: (todo: Todo.Todo) => Effect.Effect<void>
-    readonly replace: (index: number, todo: Todo.Todo) => Effect.Effect<void>
-    readonly remove: (index: number) => Effect.Effect<void>
-    // readonly moveUp: (index: number) => Effect.Effect<void, Cause.NoSuchElementException>
-    // readonly moveDown: (index: number) => Effect.Effect<void, Cause.NoSuchElementException>
+    readonly load: Effect.Effect<void, PlatformError | ParseResult.ParseError>
+    readonly save: Effect.Effect<void, PlatformError | ParseResult.ParseError>
 }>() {}
 
 
 export const make = (key: string) => Layer.effect(TodosState, Effect.gen(function*() {
-    const todos = yield* SubscriptionRef.make(Chunk.empty<Todo.Todo>())
-
     const readFromLocalStorage = KeyValueStore.KeyValueStore.pipe(
         Effect.flatMap(kv => kv.get(key)),
         Effect.flatMap(identity),
-        Effect.flatMap(Schema.parseJson().pipe(
-            Schema.compose(Schema.Chunk(Todo.TodoFromJson)),
-            Schema.decode,
+        Effect.flatMap(Schema.decode(
+            Schema.compose(Schema.parseJson(), Schema.Chunk(Todo.TodoFromJson))
         )),
-        Effect.flatMap(v => Ref.set(todos, v)),
-
-        Effect.catchTag("NoSuchElementException", () => Ref.set(todos, Chunk.empty())),
-
+        Effect.catchTag("NoSuchElementException", () => Effect.succeed(Chunk.empty<Todo.Todo>())),
         Effect.provide(BrowserKeyValueStore.layerLocalStorage),
     )
 
-    const saveToLocalStorage = Effect.all([KeyValueStore.KeyValueStore, todos]).pipe(
-        Effect.flatMap(([kv, values]) => values.pipe(
-            Schema.parseJson().pipe(
-                Schema.compose(Schema.Chunk(Todo.TodoFromJson)),
-                Schema.encode,
+    const writeToLocalStorage = (values: Chunk.Chunk<Todo.Todo>) => KeyValueStore.KeyValueStore.pipe(
+        Effect.flatMap(kv => values.pipe(
+            Schema.encode(
+                Schema.compose(Schema.parseJson(), Schema.Chunk(Todo.TodoFromJson))
             ),
             Effect.flatMap(v => kv.set(key, v)),
         )),
-
         Effect.provide(BrowserKeyValueStore.layerLocalStorage),
     )
 
-    const prepend = (todo: Todo.Todo) => Ref.update(todos, Chunk.prepend(todo))
-    const replace = (index: number, todo: Todo.Todo) => Ref.update(todos, Chunk.replace(index, todo))
-    const remove = (index: number) => Ref.update(todos, Chunk.remove(index))
+    const todos = yield* SubscriptionRef.make(yield* readFromLocalStorage)
+    const load = Effect.flatMap(readFromLocalStorage, v => Ref.set(todos, v))
+    const save = Effect.flatMap(todos, writeToLocalStorage)
 
-    // const moveUp = (index: number) => Effect.gen(function*() {
+    // Sync changes with local storage
+    yield* Effect.forkScoped(Stream.runForEach(todos.changes, writeToLocalStorage))
 
-    // })
-
-    yield* readFromLocalStorage
-
-    return {
-        todos,
-        readFromLocalStorage,
-        saveToLocalStorage,
-        prepend,
-        replace,
-        remove,
-    }
+    return { todos, load, save }
 }))

packages/example/src/todos/views/VNewTodo.tsx

@@ -1,25 +1,27 @@
 import { Todo } from "@/domain"
 import { Box, Button, Card, Flex, TextArea } from "@radix-ui/themes"
-import { Effect, Option, SubscriptionRef } from "effect"
+import { GetRandomValues, makeUuid4 } from "@typed/id"
+import { Chunk, Effect, Option, Ref } from "effect"
 import { R } from "../reffuse"
 import { TodosState } from "../services"
 
 
-const createEmptyTodo = Todo.generateUniqueID.pipe(
-    Effect.map(id => Todo.Todo.make({
-        id,
-        content: "",
-        completedAt: Option.none(),
-    }, true))
+const createEmptyTodo = makeUuid4.pipe(
+    Effect.map(id => Todo.Todo.make({ id, content: "", completedAt: Option.none()}, true)),
+    Effect.provide(GetRandomValues.CryptoRandom),
 )
 
 
 export function VNewTodo() {
 
-    const runSync = R.useRunSync()
+    const todoRef = R.useRef(() => createEmptyTodo)
+    const [content, setContent] = R.useRefState(R.useSubRefFromPath(todoRef, ["content"]))
 
-    const todoRef = R.useMemo(() => createEmptyTodo.pipe(Effect.flatMap(SubscriptionRef.make)), [])
-    const [todo, setTodo] = R.useRefState(todoRef)
+    const add = R.useCallbackSync(() => Effect.all([TodosState.TodosState, todoRef]).pipe(
+        Effect.flatMap(([state, todo]) => Ref.update(state.todos, Chunk.prepend(todo))),
+        Effect.andThen(createEmptyTodo),
+        Effect.flatMap(v => Ref.set(todoRef, v)),
+    ), [todoRef])
 
 
     return (
@@ -27,23 +29,12 @@ export function VNewTodo() {
             <Card>
                 <Flex direction="column" align="stretch" gap="2">
                     <TextArea
-                        value={todo.content}
-                        onChange={e => setTodo(prev =>
-                            Todo.Todo.make({ ...prev, content: e.target.value }, true)
-                        )}
+                        value={content}
+                        onChange={e => setContent(e.target.value)}
                     />
 
                     <Flex direction="row" justify="center" align="center">
-                        <Button
-                            onClick={() => TodosState.TodosState.pipe(
-                                Effect.flatMap(state => state.prepend(todo)),
-                                Effect.andThen(createEmptyTodo),
-                                Effect.map(setTodo),
-                                runSync,
-                            )}
-                        >
-                            Add
-                        </Button>
+                        <Button onClick={add}>Add</Button>
                     </Flex>
                 </Flex>
             </Card>

packages/example/src/todos/views/VTodo.tsx

@@ -1,20 +1,28 @@
 import { Todo } from "@/domain"
 import { Box, Card, Flex, IconButton, TextArea } from "@radix-ui/themes"
-import { Effect } from "effect"
+import { Effect, Ref, Stream, SubscriptionRef } from "effect"
 import { Delete } from "lucide-react"
 import { useState } from "react"
 import { R } from "../reffuse"
-import { TodosState } from "../services"
 
 
 export interface VTodoProps {
-    readonly index: number
-    readonly todo: Todo.Todo
+    readonly todoRef: SubscriptionRef.SubscriptionRef<Todo.Todo>
+    readonly remove: Effect.Effect<void>
 }
 
-export function VTodo({ index, todo }: VTodoProps) {
+export function VTodo({ todoRef, remove }: VTodoProps) {
 
     const runSync = R.useRunSync()
+
+    const localTodoRef = R.useRef(() => todoRef)
+    const [content, setContent] = R.useRefState(R.useSubRefFromPath(localTodoRef, ["content"]))
+
+    R.useFork(() => localTodoRef.changes.pipe(
+        Stream.debounce("250 millis"),
+        Stream.runForEach(v => Ref.set(todoRef, v)),
+    ), [localTodoRef])
+
     const editorMode = useState(false)
 
 
@@ -23,14 +31,8 @@ export function VTodo({ index, todo }: VTodoProps) {
             <Card>
                 <Flex direction="column" align="stretch" gap="1">
                     <TextArea
-                        value={todo.content}
-                        onChange={e => TodosState.TodosState.pipe(
-                            Effect.flatMap(state => state.replace(
-                                index,
-                                Todo.Todo.make({ ...todo, content: e.target.value }, true),
-                            )),
-                            runSync,
-                        )}
+                        value={content}
+                        onChange={e => setContent(e.target.value)}
                         disabled={!editorMode}
                     />
 
@@ -38,12 +40,7 @@ export function VTodo({ index, todo }: VTodoProps) {
                         <Box></Box>
 
                         <Flex direction="row" align="center" gap="1">
-                            <IconButton
-                                onClick={() => TodosState.TodosState.pipe(
-                                    Effect.flatMap(state => state.remove(index)),
-                                    runSync,
-                                )}
-                            >
+                            <IconButton onClick={() => runSync(remove)}>
                                 <Delete />
                             </IconButton>
                         </Flex>

packages/example/src/todos/views/VTodos.tsx

@@ -1,5 +1,5 @@
 import { Box, Flex } from "@radix-ui/themes"
-import { Chunk, Effect, Stream } from "effect"
+import { Chunk, Effect, Ref } from "effect"
 import { R } from "../reffuse"
 import { TodosState } from "../services"
 import { VNewTodo } from "./VNewTodo"
@@ -8,15 +8,8 @@ import { VTodo } from "./VTodo"
 
 export function VTodos() {
 
-    // Sync changes to the todos with the local storage
-    R.useFork(() => TodosState.TodosState.pipe(
-        Effect.flatMap(state =>
-            Stream.runForEach(state.todos.changes, () => state.saveToLocalStorage)
-        )
-    ), [])
-
-    const todosRef = R.useMemo(() => TodosState.TodosState.pipe(Effect.map(state => state.todos)), [])
-    const [todos] = R.useRefState(todosRef)
+    const todosRef = R.useMemo(() => Effect.map(TodosState.TodosState, state => state.todos), [])
+    const [todos] = R.useSubscribeRefs(todosRef)
 
 
     return (
@@ -27,7 +20,16 @@ export function VTodos() {
 
             {Chunk.map(todos, (todo, index) => (
                 <Box key={todo.id} width="500px">
-                    <VTodo index={index} todo={todo} />
+                    <R.SubRefFromGetSet
+                        parent={todosRef}
+                        getter={parentValue => Chunk.unsafeGet(parentValue, index)}
+                        setter={(parentValue, value) => Chunk.replace(parentValue, index, value)}
+                    >
+                        {ref => <VTodo
+                            todoRef={ref}
+                            remove={Ref.update(todosRef, Chunk.remove(index))}
+                        />}
+                    </R.SubRefFromGetSet>
                 </Box>
             ))}
         </Flex>

packages/extension-lazyref/package.json

@@ -35,7 +35,7 @@
   "peerDependencies": {
     "@typed/lazy-ref": "^0.3.0",
     "@types/react": "^19.0.0",
-    "effect": "^3.13.0",
+    "effect": "^3.15.0",
     "react": "^19.0.0",
     "reffuse": "^0.1.8"
   }

packages/extension-query/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@reffuse/extension-query",
-  "version": "0.1.3",
+  "version": "0.1.5",
   "type": "module",
   "files": [
     "./README.md",
@@ -37,8 +37,8 @@
     "@effect/platform-browser": "^0.56.0",
     "@typed/async-data": "^0.13.0",
     "@types/react": "^19.0.0",
-    "effect": "^3.13.0",
+    "effect": "^3.15.0",
     "react": "^19.0.0",
-    "reffuse": "^0.1.6"
+    "reffuse": "^0.1.11"
   }
 }

packages/extension-query/src/MutationRunner.ts

@@ -1,12 +1,11 @@
 import * as AsyncData from "@typed/async-data"
-import { type Context, Effect, type Fiber, Queue, Ref, Stream, SubscriptionRef } from "effect"
-import type * as QueryClient from "../QueryClient.js"
-import * as QueryProgress from "../QueryProgress.js"
-import * as QueryState from "./QueryState.js"
+import { Effect, type Fiber, Queue, Ref, Stream, SubscriptionRef } from "effect"
+import type * as QueryClient from "./QueryClient.js"
+import * as QueryProgress from "./QueryProgress.js"
+import { QueryState } from "./internal/index.js"
 
 
-export interface MutationRunner<K extends readonly unknown[], A, E, R> {
-    readonly context: Context.Context<R>
+export interface MutationRunner<K extends readonly unknown[], A, E> {
     readonly stateRef: SubscriptionRef.SubscriptionRef<AsyncData.AsyncData<A, E>>
 
     readonly mutate: (...key: K) => Effect.Effect<AsyncData.Success<A> | AsyncData.Failure<E>>
@@ -17,6 +16,11 @@ export interface MutationRunner<K extends readonly unknown[], A, E, R> {
 }
 
 
+export const Tag = <const Id extends string>(id: Id) => <
+    Self, K extends readonly unknown[], A, E = never,
+>() => Effect.Tag(id)<Self, MutationRunner<K, A, E>>()
+
+
 export interface MakeProps<K extends readonly unknown[], A, FallbackA, E, HandledE, R> {
     readonly QueryClient: QueryClient.GenericTagClass<FallbackA, HandledE>
     readonly mutation: (key: K) => Effect.Effect<A, E, R | QueryProgress.QueryProgress>
@@ -28,7 +32,7 @@ export const make = <K extends readonly unknown[], A, FallbackA, E, HandledE, R>
         mutation,
     }: MakeProps<K, A, FallbackA, E, HandledE, R>
 ): Effect.Effect<
-    MutationRunner<K, A | FallbackA, Exclude<E, HandledE>, R>,
+    MutationRunner<K, A | FallbackA, Exclude<E, HandledE>>,
     never,
     R | QueryClient.TagClassShape<FallbackA, HandledE>
 > => Effect.gen(function*() {
@@ -37,25 +41,18 @@ export const make = <K extends readonly unknown[], A, FallbackA, E, HandledE, R>
 
     const queryStateTag = QueryState.makeTag<A | FallbackA, Exclude<E, HandledE>>()
 
-    const run = (key: K) => Effect.Do.pipe(
-        Effect.bind("state", () => queryStateTag),
-        Effect.bind("client", () => QueryClient),
-
-        Effect.flatMap(({ state, client }) => state.set(AsyncData.loading()).pipe(
+    const run = (key: K) => Effect.all([QueryClient, queryStateTag]).pipe(
+        Effect.flatMap(([client, state]) => state.set(AsyncData.loading()).pipe(
             Effect.andThen(mutation(key)),
             client.errorHandler.handle,
             Effect.matchCauseEffect({
-                onSuccess: v => Effect.succeed(AsyncData.success(v)).pipe(
-                    Effect.tap(state.set)
-                ),
-                onFailure: c => Effect.succeed(AsyncData.failure(c)).pipe(
-                    Effect.tap(state.set)
-                ),
+                onSuccess: v => Effect.tap(Effect.succeed(AsyncData.success(v)), state.set),
+                onFailure: c => Effect.tap(Effect.succeed(AsyncData.failure(c)), state.set),
             }),
         )),
 
         Effect.provide(context),
-        Effect.provide(QueryProgress.QueryProgress.Live),
+        Effect.provide(QueryProgress.QueryProgress.Default),
     )
 
     const mutate = (...key: K) => Effect.provide(run(key), QueryState.layer(
@@ -64,11 +61,11 @@ export const make = <K extends readonly unknown[], A, FallbackA, E, HandledE, R>
         value => Ref.set(globalStateRef, value),
     ))
 
-    const forkMutate = (...key: K) => Effect.Do.pipe(
-        Effect.bind("stateRef", () => Ref.make(AsyncData.noData<A | FallbackA, Exclude<E, HandledE>>())),
-        Effect.bind("stateQueue", () => Queue.unbounded<AsyncData.AsyncData<A | FallbackA, Exclude<E, HandledE>>>()),
-
-        Effect.flatMap(({ stateRef, stateQueue }) =>
+    const forkMutate = (...key: K) => Effect.all([
+        Ref.make(AsyncData.noData<A | FallbackA, Exclude<E, HandledE>>()),
+        Queue.unbounded<AsyncData.AsyncData<A | FallbackA, Exclude<E, HandledE>>>(),
+    ]).pipe(
+        Effect.flatMap(([stateRef, stateQueue]) =>
             Effect.addFinalizer(() => Queue.shutdown(stateQueue)).pipe(
                 Effect.andThen(run(key)),
                 Effect.scoped,

packages/extension-query/src/MutationService.ts

@@ -1,16 +0,0 @@
-import type * as AsyncData from "@typed/async-data"
-import { Effect, type Fiber, type Stream, type SubscriptionRef } from "effect"
-
-
-export interface MutationService<K extends readonly unknown[], A, E> {
-    readonly state: SubscriptionRef.SubscriptionRef<AsyncData.AsyncData<A, E>>
-    readonly mutate: (...key: K) => Effect.Effect<AsyncData.Success<A> | AsyncData.Failure<E>>
-    readonly forkMutate: (...key: K) => Effect.Effect<readonly [
-        fiber: Fiber.RuntimeFiber<AsyncData.Success<A> | AsyncData.Failure<E>>,
-        state: Stream.Stream<AsyncData.AsyncData<A, E>>,
-    ]>
-}
-
-export const Tag = <const Id extends string>(id: Id) => <
-    Self, K extends readonly unknown[], A, E = never,
->() => Effect.Tag(id)<Self, MutationService<K, A, E>>()

packages/extension-query/src/QueryClient.ts

@@ -1,4 +1,4 @@
-import { Context, Effect, Layer } from "effect"
+import { Context, Effect, identity, Layer } from "effect"
 import type { Mutable } from "effect/Types"
 import * as QueryErrorHandler from "./QueryErrorHandler.js"
 
@@ -8,6 +8,17 @@ export interface QueryClient<FallbackA, HandledE> {
 }
 
 
+export interface MakeProps<FallbackA, HandledE> {
+    readonly errorHandler: QueryErrorHandler.QueryErrorHandler<FallbackA, HandledE>
+}
+
+export const make = <FallbackA, HandledE>(
+    { errorHandler }: MakeProps<FallbackA, HandledE>
+): Effect.Effect<QueryClient<FallbackA, HandledE>> => Effect.Do.pipe(
+    Effect.let("errorHandler", () => errorHandler)
+)
+
+
 const id = "@reffuse/extension-query/QueryClient"
 
 export type TagClassShape<FallbackA, HandledE> = Context.TagClassShape<typeof id, QueryClient<FallbackA, HandledE>>
@@ -19,46 +30,28 @@ export type GenericTagClass<FallbackA, HandledE> = Context.TagClass<
 export const makeGenericTagClass = <FallbackA = never, HandledE = never>(): GenericTagClass<FallbackA, HandledE> => Context.Tag(id)()
 
 
-export interface ServiceProps<EH, FallbackA, HandledE> {
-    readonly ErrorHandler?: Context.Tag<EH, QueryErrorHandler.QueryErrorHandler<FallbackA, HandledE>>
+export interface ServiceProps<FallbackA = never, HandledE = never, E = never, R = never> {
+    readonly errorHandler?: Effect.Effect<QueryErrorHandler.QueryErrorHandler<FallbackA, HandledE>, E, R>
 }
 
-export interface ServiceResult<Self, EH, FallbackA, HandledE> extends Context.TagClass<
+export interface ServiceResult<Self, FallbackA, HandledE, E, R> extends Context.TagClass<
     Self,
     typeof id,
     QueryClient<FallbackA, HandledE>
 > {
-    readonly Live: Layer.Layer<
-        Self | (EH extends QueryErrorHandler.DefaultQueryErrorHandler ? EH : never),
-        never,
-        EH extends QueryErrorHandler.DefaultQueryErrorHandler ? never : EH
-    >
+    readonly Default: Layer.Layer<Self, E, R>
 }
 
 export const Service = <Self>() => (
-    <
-        EH = QueryErrorHandler.DefaultQueryErrorHandler,
-        FallbackA = QueryErrorHandler.Fallback<Context.Tag.Service<QueryErrorHandler.DefaultQueryErrorHandler>>,
-        HandledE = QueryErrorHandler.Error<Context.Tag.Service<QueryErrorHandler.DefaultQueryErrorHandler>>,
-    >(
-        props?: ServiceProps<EH, FallbackA, HandledE>
-    ): ServiceResult<Self, EH, FallbackA, HandledE> => {
-        const TagClass = Context.Tag(id)() as ServiceResult<Self, EH, FallbackA, HandledE>
+    <FallbackA = never, HandledE = never, E = never, R = never>(
+        props?: ServiceProps<FallbackA, HandledE, E, R>
+    ): ServiceResult<Self, FallbackA, HandledE, E, R> => {
+        const TagClass = Context.Tag(id)() as ServiceResult<Self, FallbackA, HandledE, E, R>
 
-        (TagClass as Mutable<typeof TagClass>).Live = Layer.effect(TagClass, Effect.Do.pipe(
-            Effect.bind("errorHandler", () =>
-                (props?.ErrorHandler ?? QueryErrorHandler.DefaultQueryErrorHandler) as Effect.Effect<
-                    QueryErrorHandler.QueryErrorHandler<FallbackA, HandledE>,
-                    never,
-                    EH extends QueryErrorHandler.DefaultQueryErrorHandler ? never : EH
-                >
-            )
-        )).pipe(
-            Layer.provideMerge((props?.ErrorHandler
-                ? Layer.empty
-                : QueryErrorHandler.DefaultQueryErrorHandler.Live
-            ) as Layer.Layer<EH>)
-        )
+        (TagClass as Mutable<typeof TagClass>).Default = Layer.effect(TagClass, Effect.flatMap(
+            props?.errorHandler ?? QueryErrorHandler.make<never>()(identity),
+            errorHandler => make({ errorHandler }),
+        ))
 
         return TagClass
     }

packages/extension-query/src/QueryErrorHandler.ts

@@ -1,5 +1,4 @@
-import { Cause, Context, Effect, identity, Layer, Queue, Stream } from "effect"
-import type { Mutable } from "effect/Types"
+import { Cause, Effect, PubSub, Stream } from "effect"
 
 
 export interface QueryErrorHandler<FallbackA, HandledE> {
@@ -11,55 +10,31 @@ export type Fallback<T> = T extends QueryErrorHandler<infer A, any> ? A : never
 export type Error<T> = T extends QueryErrorHandler<any, infer E> ? E : never
 
 
-export interface ServiceResult<
-    Self,
-    Id extends string,
-    FallbackA,
-    HandledE,
-> extends Context.TagClass<
-    Self,
-    Id,
-    QueryErrorHandler<FallbackA, HandledE>
-> {
-    readonly Live: Layer.Layer<Self>
-}
-
-export const Service = <Self, HandledE = never>() => (
-    <const Id extends string, FallbackA>(
-        id: Id,
+export const make = <HandledE = never>() => (
+    <FallbackA>(
         f: (
             self: Effect.Effect<never, HandledE>,
             failure: (failure: HandledE) => Effect.Effect<never>,
             defect: (defect: unknown) => Effect.Effect<never>,
-        ) => Effect.Effect<FallbackA>,
-    ): ServiceResult<Self, Id, FallbackA, HandledE> => {
-        const TagClass = Context.Tag(id)() as ServiceResult<Self, Id, FallbackA, HandledE>
+        ) => Effect.Effect<FallbackA>
+    ): Effect.Effect<QueryErrorHandler<FallbackA, HandledE>> => Effect.gen(function*() {
+        const pubsub = yield* PubSub.unbounded<Cause.Cause<HandledE>>()
+        const errors = Stream.fromPubSub(pubsub)
 
-        (TagClass as Mutable<typeof TagClass>).Live = Layer.effect(TagClass, Effect.gen(function*() {
-            const queue = yield* Queue.unbounded<Cause.Cause<HandledE>>()
-            const errors = Stream.fromQueue(queue)
+        const handle = <A, E, R>(
+            self: Effect.Effect<A, E, R>
+        ): Effect.Effect<A | FallbackA, Exclude<E, HandledE>, R> => f(
+            self as unknown as Effect.Effect<never, HandledE, never>,
+            (failure: HandledE) => Effect.andThen(
+                PubSub.publish(pubsub, Cause.fail(failure)),
+                Effect.failCause(Cause.empty),
+            ),
+            (defect: unknown) => Effect.andThen(
+                PubSub.publish(pubsub, Cause.die(defect)),
+                Effect.failCause(Cause.empty),
+            ),
+        )
 
-            const handle = <A, E, R>(
-                self: Effect.Effect<A, E, R>
-            ): Effect.Effect<A | FallbackA, Exclude<E, HandledE>, R> => f(
-                self as unknown as Effect.Effect<never, HandledE, never>,
-                (failure: HandledE) => Queue.offer(queue, Cause.fail(failure)).pipe(
-                    Effect.andThen(Effect.failCause(Cause.empty))
-                ),
-                (defect: unknown) => Queue.offer(queue, Cause.die(defect)).pipe(
-                    Effect.andThen(Effect.failCause(Cause.empty))
-                ),
-            )
-
-            return { errors, handle }
-        }))
-
-        return TagClass
-    }
+        return { errors, handle }
+    })
 )
-
-
-export class DefaultQueryErrorHandler extends Service<DefaultQueryErrorHandler>()(
-    "@reffuse/extension-query/DefaultQueryErrorHandler",
-    identity,
-) {}

packages/extension-query/src/QueryExtension.ts

@@ -1,53 +1,21 @@
-import type * as AsyncData from "@typed/async-data"
-import { type Cause, type Context, Effect, type Fiber, Layer, type Option, type Stream, type SubscriptionRef } from "effect"
-import * as React from "react"
+import type { Effect, Stream } from "effect"
 import { ReffuseExtension, type ReffuseNamespace } from "reffuse"
-import type * as MutationService from "./MutationService.js"
+import * as MutationRunner from "./MutationRunner.js"
 import * as QueryClient from "./QueryClient.js"
 import type * as QueryProgress from "./QueryProgress.js"
-import type * as QueryService from "./QueryService.js"
-import { MutationRunner, QueryRunner } from "./internal/index.js"
+import * as QueryRunner from "./QueryRunner.js"
 
 
 export interface UseQueryProps<K extends readonly unknown[], A, E, R> {
     readonly key: Stream.Stream<K>
     readonly query: (key: K) => Effect.Effect<A, E, R | QueryProgress.QueryProgress>
-    readonly refreshOnWindowFocus?: boolean
+    readonly options?: QueryRunner.RunOptions
 }
 
-export interface UseQueryResult<K extends readonly unknown[], A, E> {
-    readonly latestKey: SubscriptionRef.SubscriptionRef<Option.Option<K>>
-    readonly state: SubscriptionRef.SubscriptionRef<AsyncData.AsyncData<A, E>>
-
-    readonly forkRefresh: Effect.Effect<readonly [
-        fiber: Fiber.RuntimeFiber<AsyncData.Success<A> | AsyncData.Failure<E>, Cause.NoSuchElementException>,
-        state: Stream.Stream<AsyncData.AsyncData<A, E>>,
-    ]>
-
-    readonly layer: <Self, Id extends string>(
-        tag: Context.TagClass<Self, Id, QueryService.QueryService<K, A, E>>
-    ) => Layer.Layer<Self>
-}
-
-
 export interface UseMutationProps<K extends readonly unknown[], A, E, R> {
     readonly mutation: (key: K) => Effect.Effect<A, E, R | QueryProgress.QueryProgress>
 }
 
-export interface UseMutationResult<K extends readonly unknown[], A, E> {
-    readonly state: SubscriptionRef.SubscriptionRef<AsyncData.AsyncData<A, E>>
-
-    readonly mutate: (...key: K) => Effect.Effect<AsyncData.Success<A> | AsyncData.Failure<E>>
-    readonly forkMutate: (...key: K) => Effect.Effect<readonly [
-        fiber: Fiber.RuntimeFiber<AsyncData.Success<A> | AsyncData.Failure<E>>,
-        state: Stream.Stream<AsyncData.AsyncData<A, E>>,
-    ]>
-
-    readonly layer: <Self, Id extends string>(
-        tag: Context.TagClass<Self, Id, MutationService.MutationService<K, A, E>>
-    ) => Layer.Layer<Self>
-}
-
 
 export const QueryExtension = ReffuseExtension.make(() => ({
     useQuery<
@@ -61,32 +29,16 @@ export const QueryExtension = ReffuseExtension.make(() => ({
     >(
         this: ReffuseNamespace.ReffuseNamespace<R | QueryClient.TagClassShape<FallbackA, HandledE>>,
         props: UseQueryProps<QK, QA, QE, QR>,
-    ): UseQueryResult<QK, QA | FallbackA, Exclude<QE, HandledE>> {
+    ): QueryRunner.QueryRunner<QK, QA | FallbackA, Exclude<QE, HandledE>> {
         const runner = this.useMemo(() => QueryRunner.make({
             QueryClient: QueryClient.makeGenericTagClass<FallbackA, HandledE>(),
             key: props.key,
             query: props.query,
         }), [props.key])
 
-        this.useFork(() => runner.fetchOnKeyChange, [runner])
+        this.useFork(() => QueryRunner.run(runner, props.options), [runner])
 
-        this.useFork(() => (props.refreshOnWindowFocus ?? true)
-            ? runner.refreshOnWindowFocus
-            : Effect.void,
-        [props.refreshOnWindowFocus, runner])
-
-        return React.useMemo(() => ({
-            latestKey: runner.latestKeyRef,
-            state: runner.stateRef,
-
-            forkRefresh: runner.forkRefresh,
-
-            layer: tag => Layer.succeed(tag, {
-                latestKey: runner.latestKeyRef,
-                state: runner.stateRef,
-                forkRefresh: runner.forkRefresh,
-            }),
-        }), [runner])
+        return runner
     },
 
     useMutation<
@@ -100,23 +52,10 @@ export const QueryExtension = ReffuseExtension.make(() => ({
     >(
         this: ReffuseNamespace.ReffuseNamespace<R | QueryClient.TagClassShape<FallbackA, HandledE>>,
         props: UseMutationProps<QK, QA, QE, QR>,
-    ): UseMutationResult<QK, QA | FallbackA, Exclude<QE, HandledE>> {
-        const runner = this.useMemo(() => MutationRunner.make({
+    ): MutationRunner.MutationRunner<QK, QA | FallbackA, Exclude<QE, HandledE>> {
+        return this.useMemo(() => MutationRunner.make({
             QueryClient: QueryClient.makeGenericTagClass<FallbackA, HandledE>(),
             mutation: props.mutation,
         }), [])
-
-        return React.useMemo(() => ({
-            state: runner.stateRef,
-
-            mutate: runner.mutate,
-            forkMutate: runner.forkMutate,
-
-            layer: tag => Layer.succeed(tag, {
-                state: runner.stateRef,
-                mutate: runner.mutate,
-                forkMutate: runner.forkMutate,
-            }),
-        }), [runner])
     },
 }))

packages/extension-query/src/QueryProgress.ts

@@ -10,7 +10,7 @@ export class QueryProgress extends Effect.Tag("@reffuse/extension-query/QueryPro
         f: (previous: Option.Option<AsyncData.Progress>) => AsyncData.Progress
     ) => Effect.Effect<void>
 }>() {
-    static readonly Live: Layer.Layer<
+    static readonly Default: Layer.Layer<
         QueryProgress,
         never,
         QueryState.QueryState<any, any>

packages/extension-query/src/QueryRunner.ts

@@ -0,0 +1,193 @@
+import { BrowserStream } from "@effect/platform-browser"
+import * as AsyncData from "@typed/async-data"
+import { type Cause, Effect, Fiber, identity, Option, Queue, Ref, type Scope, Stream, SubscriptionRef } from "effect"
+import type * as QueryClient from "./QueryClient.js"
+import * as QueryProgress from "./QueryProgress.js"
+import { QueryState } from "./internal/index.js"
+
+
+export interface QueryRunner<K extends readonly unknown[], A, E> {
+    readonly queryKey: Stream.Stream<K>
+    readonly latestKeyValueRef: SubscriptionRef.SubscriptionRef<Option.Option<K>>
+    readonly stateRef: SubscriptionRef.SubscriptionRef<AsyncData.AsyncData<A, E>>
+    readonly fiberRef: SubscriptionRef.SubscriptionRef<Option.Option<Fiber.RuntimeFiber<
+        AsyncData.Success<A> | AsyncData.Failure<E>,
+        Cause.NoSuchElementException
+    >>>
+
+    readonly interrupt: Effect.Effect<void>
+    readonly forkInterrupt: Effect.Effect<Fiber.RuntimeFiber<void>>
+    readonly forkFetch: (keyValue: K) => Effect.Effect<readonly [
+        fiber: Fiber.RuntimeFiber<AsyncData.Success<A> | AsyncData.Failure<E>>,
+        state: Stream.Stream<AsyncData.AsyncData<A, E>>,
+    ]>
+    readonly forkRefresh: Effect.Effect<readonly [
+        fiber: Fiber.RuntimeFiber<AsyncData.Success<A> | AsyncData.Failure<E>, Cause.NoSuchElementException>,
+        state: Stream.Stream<AsyncData.AsyncData<A, E>>,
+    ]>
+}
+
+
+export const Tag = <const Id extends string>(id: Id) => <
+    Self, K extends readonly unknown[], A, E = never
+>() => Effect.Tag(id)<Self, QueryRunner<K, A, E>>()
+
+
+export interface MakeProps<K extends readonly unknown[], A, FallbackA, E, HandledE, R> {
+    readonly QueryClient: QueryClient.GenericTagClass<FallbackA, HandledE>
+    readonly key: Stream.Stream<K>
+    readonly query: (key: K) => Effect.Effect<A, E, R | QueryProgress.QueryProgress>
+}
+
+export const make = <K extends readonly unknown[], A, FallbackA, E, HandledE, R>(
+    {
+        QueryClient,
+        key,
+        query,
+    }: MakeProps<K, A, FallbackA, E, HandledE, R>
+): Effect.Effect<
+    QueryRunner<K, A | FallbackA, Exclude<E, HandledE>>,
+    never,
+    R | QueryClient.TagClassShape<FallbackA, HandledE>
+> => Effect.gen(function*() {
+    const context = yield* Effect.context<R | QueryClient.TagClassShape<FallbackA, HandledE>>()
+
+    const latestKeyValueRef = yield* SubscriptionRef.make(Option.none<K>())
+    const stateRef = yield* SubscriptionRef.make(AsyncData.noData<A | FallbackA, Exclude<E, HandledE>>())
+    const fiberRef = yield* SubscriptionRef.make(Option.none<Fiber.RuntimeFiber<
+        AsyncData.Success<A | FallbackA> | AsyncData.Failure<Exclude<E, HandledE>>,
+        Cause.NoSuchElementException
+    >>())
+
+    const queryStateTag = QueryState.makeTag<A | FallbackA, Exclude<E, HandledE>>()
+
+    const interrupt = Effect.flatMap(fiberRef, Option.match({
+        onSome: fiber => Ref.set(fiberRef, Option.none()).pipe(
+            Effect.andThen(Fiber.interrupt(fiber))
+        ),
+        onNone: () => Effect.void,
+    }))
+
+    const forkInterrupt = Effect.flatMap(fiberRef, Option.match({
+        onSome: fiber => Ref.set(fiberRef, Option.none()).pipe(
+            Effect.andThen(Fiber.interrupt(fiber).pipe(
+                Effect.asVoid,
+                Effect.forkDaemon,
+            ))
+        ),
+        onNone: () => Effect.forkDaemon(Effect.void),
+    }))
+
+    const run = (keyValue: K) => Effect.all([QueryClient, queryStateTag]).pipe(
+        Effect.flatMap(([client, state]) => Ref.set(latestKeyValueRef, Option.some(keyValue)).pipe(
+            Effect.andThen(query(keyValue)),
+            client.errorHandler.handle,
+            Effect.matchCauseEffect({
+                onSuccess: v => Effect.tap(Effect.succeed(AsyncData.success(v)), state.set),
+                onFailure: c => Effect.tap(Effect.succeed(AsyncData.failure(c)), state.set),
+            }),
+        )),
+
+        Effect.provide(context),
+        Effect.provide(QueryProgress.QueryProgress.Default),
+    )
+
+    const forkFetch = (keyValue: K) => Queue.unbounded<AsyncData.AsyncData<A | FallbackA, Exclude<E, HandledE>>>().pipe(
+        Effect.flatMap(stateQueue => queryStateTag.pipe(
+            Effect.flatMap(state => interrupt.pipe(
+                Effect.andThen(
+                    Effect.addFinalizer(() => Effect.andThen(
+                        Ref.set(fiberRef, Option.none()),
+                        Queue.shutdown(stateQueue),
+                    )).pipe(
+                        Effect.andThen(state.set(AsyncData.loading())),
+                        Effect.andThen(run(keyValue)),
+                        Effect.scoped,
+                        Effect.forkDaemon,
+                    )
+                ),
+
+                Effect.tap(fiber => Ref.set(fiberRef, Option.some(fiber))),
+                Effect.map(fiber => [fiber, Stream.fromQueue(stateQueue)] as const),
+            )),
+
+            Effect.provide(QueryState.layer(
+                queryStateTag,
+                stateRef,
+                value => Effect.andThen(
+                    Queue.offer(stateQueue, value),
+                    Ref.set(stateRef, value),
+                ),
+            )),
+        ))
+    )
+
+    const setInitialRefreshState = Effect.flatMap(queryStateTag, state => state.update(previous => {
+        if (AsyncData.isSuccess(previous) || AsyncData.isFailure(previous))
+            return AsyncData.refreshing(previous)
+        if (AsyncData.isRefreshing(previous))
+            return AsyncData.refreshing(previous.previous)
+        return AsyncData.loading()
+    }))
+
+    const forkRefresh = Queue.unbounded<AsyncData.AsyncData<A | FallbackA, Exclude<E, HandledE>>>().pipe(
+        Effect.flatMap(stateQueue => interrupt.pipe(
+            Effect.andThen(
+                Effect.addFinalizer(() => Effect.andThen(
+                    Ref.set(fiberRef, Option.none()),
+                    Queue.shutdown(stateQueue),
+                )).pipe(
+                    Effect.andThen(setInitialRefreshState),
+                    Effect.andThen(latestKeyValueRef.pipe(
+                        Effect.flatMap(identity),
+                        Effect.flatMap(run),
+                    )),
+                    Effect.scoped,
+                    Effect.forkDaemon,
+                )
+            ),
+
+            Effect.tap(fiber => Ref.set(fiberRef, Option.some(fiber))),
+            Effect.map(fiber => [fiber, Stream.fromQueue(stateQueue)] as const),
+
+            Effect.provide(QueryState.layer(
+                queryStateTag,
+                stateRef,
+                value => Effect.andThen(
+                    Queue.offer(stateQueue, value),
+                    Ref.set(stateRef, value),
+                ),
+            )),
+        ))
+    )
+
+    return {
+        queryKey: key,
+        latestKeyValueRef,
+        stateRef,
+        fiberRef,
+
+        interrupt,
+        forkInterrupt,
+        forkFetch,
+        forkRefresh,
+    }
+})
+
+
+export interface RunOptions {
+    readonly refreshOnWindowFocus?: boolean
+}
+
+export const run = <K extends readonly unknown[], A, E>(
+    self: QueryRunner<K, A, E>,
+    options?: RunOptions,
+): Effect.Effect<void, never, Scope.Scope> => Effect.gen(function*() {
+    if (typeof window !== "undefined" && (options?.refreshOnWindowFocus ?? true))
+        yield* Effect.forkScoped(
+            Stream.runForEach(BrowserStream.fromEventListenerWindow("focus"), () => self.forkRefresh)
+        )
+
+    yield* Effect.addFinalizer(() => self.interrupt)
+    yield* Stream.runForEach(Stream.changes(self.queryKey), latestKey => self.forkFetch(latestKey))
+})

packages/extension-query/src/QueryService.ts

@@ -1,16 +0,0 @@
-import type * as AsyncData from "@typed/async-data"
-import { type Cause, Effect, type Fiber, type Option, type Stream, type SubscriptionRef } from "effect"
-
-
-export interface QueryService<K extends readonly unknown[], A, E> {
-    readonly latestKey: SubscriptionRef.SubscriptionRef<Option.Option<K>>
-    readonly state: SubscriptionRef.SubscriptionRef<AsyncData.AsyncData<A, E>>
-    readonly forkRefresh: Effect.Effect<readonly [
-        fiber: Fiber.RuntimeFiber<AsyncData.Success<A> | AsyncData.Failure<E>, Cause.NoSuchElementException>,
-        state: Stream.Stream<AsyncData.AsyncData<A, E>>,
-    ]>
-}
-
-export const Tag = <const Id extends string>(id: Id) => <
-    Self, K extends readonly unknown[], A, E = never,
->() => Effect.Tag(id)<Self, QueryService<K, A, E>>()

packages/extension-query/src/index.ts

@@ -1,6 +1,6 @@
-export * as MutationService from "./MutationService.js"
+export * as MutationRunner from "./MutationRunner.js"
 export * as QueryClient from "./QueryClient.js"
 export * as QueryErrorHandler from "./QueryErrorHandler.js"
 export * from "./QueryExtension.js"
 export * as QueryProgress from "./QueryProgress.js"
-export * as QueryService from "./QueryService.js"
+export * as QueryRunner from "./QueryRunner.js"

packages/extension-query/src/internal/QueryRunner.ts

@@ -1,191 +0,0 @@
-import { BrowserStream } from "@effect/platform-browser"
-import * as AsyncData from "@typed/async-data"
-import { type Cause, type Context, Effect, Fiber, identity, Option, Queue, Ref, type Scope, Stream, SubscriptionRef } from "effect"
-import type * as QueryClient from "../QueryClient.js"
-import * as QueryProgress from "../QueryProgress.js"
-import * as QueryState from "./QueryState.js"
-
-
-export interface QueryRunner<K extends readonly unknown[], A, E, R> {
-    readonly context: Context.Context<R>
-
-    readonly latestKeyRef: SubscriptionRef.SubscriptionRef<Option.Option<K>>
-    readonly stateRef: SubscriptionRef.SubscriptionRef<AsyncData.AsyncData<A, E>>
-    readonly fiberRef: SubscriptionRef.SubscriptionRef<Option.Option<Fiber.RuntimeFiber<
-        AsyncData.Success<A> | AsyncData.Failure<E>,
-        Cause.NoSuchElementException
-    >>>
-
-    readonly forkInterrupt: Effect.Effect<Fiber.RuntimeFiber<void, Cause.NoSuchElementException>>
-    readonly forkFetch: Effect.Effect<readonly [
-        fiber: Fiber.RuntimeFiber<AsyncData.Success<A> | AsyncData.Failure<E>, Cause.NoSuchElementException>,
-        state: Stream.Stream<AsyncData.AsyncData<A, E>>,
-    ]>
-    readonly forkRefresh: Effect.Effect<readonly [
-        fiber: Fiber.RuntimeFiber<AsyncData.Success<A> | AsyncData.Failure<E>, Cause.NoSuchElementException>,
-        state: Stream.Stream<AsyncData.AsyncData<A, E>>,
-    ]>
-
-    readonly fetchOnKeyChange: Effect.Effect<void, Cause.NoSuchElementException, Scope.Scope>
-    readonly refreshOnWindowFocus: Effect.Effect<void>
-}
-
-
-export interface MakeProps<K extends readonly unknown[], A, FallbackA, E, HandledE, R> {
-    readonly QueryClient: QueryClient.GenericTagClass<FallbackA, HandledE>
-    readonly key: Stream.Stream<K>
-    readonly query: (key: K) => Effect.Effect<A, E, R | QueryProgress.QueryProgress>
-}
-
-export const make = <K extends readonly unknown[], A, FallbackA, E, HandledE, R>(
-    {
-        QueryClient,
-        key,
-        query,
-    }: MakeProps<K, A, FallbackA, E, HandledE, R>
-): Effect.Effect<
-    QueryRunner<K, A | FallbackA, Exclude<E, HandledE>, R>,
-    never,
-    R | QueryClient.TagClassShape<FallbackA, HandledE>
-> => Effect.gen(function*() {
-    const context = yield* Effect.context<R | QueryClient.TagClassShape<FallbackA, HandledE>>()
-
-    const latestKeyRef = yield* SubscriptionRef.make(Option.none<K>())
-    const stateRef = yield* SubscriptionRef.make(AsyncData.noData<A | FallbackA, Exclude<E, HandledE>>())
-    const fiberRef = yield* SubscriptionRef.make(Option.none<Fiber.RuntimeFiber<
-        AsyncData.Success<A | FallbackA> | AsyncData.Failure<Exclude<E, HandledE>>,
-        Cause.NoSuchElementException
-    >>())
-
-    const queryStateTag = QueryState.makeTag<A | FallbackA, Exclude<E, HandledE>>()
-
-    const interrupt = fiberRef.pipe(
-        Effect.flatMap(Option.match({
-            onSome: fiber => Ref.set(fiberRef, Option.none()).pipe(
-                Effect.andThen(Fiber.interrupt(fiber))
-            ),
-            onNone: () => Effect.void,
-        }))
-    )
-
-    const forkInterrupt = fiberRef.pipe(
-        Effect.flatMap(Option.match({
-            onSome: fiber => Ref.set(fiberRef, Option.none()).pipe(
-                Effect.andThen(Fiber.interrupt(fiber).pipe(
-                    Effect.asVoid,
-                    Effect.forkDaemon,
-                ))
-            ),
-            onNone: () => Effect.forkDaemon(Effect.void),
-        }))
-    )
-
-    const run = Effect.Do.pipe(
-        Effect.bind("state", () => queryStateTag),
-        Effect.bind("client", () => QueryClient),
-        Effect.bind("latestKey", () => latestKeyRef.pipe(Effect.flatMap(identity))),
-
-        Effect.flatMap(({ state, client, latestKey }) => query(latestKey).pipe(
-            client.errorHandler.handle,
-            Effect.matchCauseEffect({
-                onSuccess: v => Effect.succeed(AsyncData.success(v)).pipe(
-                    Effect.tap(state.set)
-                ),
-                onFailure: c => Effect.succeed(AsyncData.failure(c)).pipe(
-                    Effect.tap(state.set)
-                ),
-            }),
-        )),
-
-        Effect.provide(context),
-        Effect.provide(QueryProgress.QueryProgress.Live),
-    )
-
-    const forkFetch = Queue.unbounded<AsyncData.AsyncData<A | FallbackA, Exclude<E, HandledE>>>().pipe(
-        Effect.flatMap(stateQueue => queryStateTag.pipe(
-            Effect.flatMap(state => interrupt.pipe(
-                Effect.andThen(Effect.addFinalizer(() => Ref.set(fiberRef, Option.none()).pipe(
-                    Effect.andThen(Queue.shutdown(stateQueue))
-                )).pipe(
-                    Effect.andThen(state.set(AsyncData.loading())),
-                    Effect.andThen(run),
-                    Effect.scoped,
-                    Effect.forkDaemon,
-                )),
-
-                Effect.tap(fiber => Ref.set(fiberRef, Option.some(fiber))),
-                Effect.map(fiber => [fiber, Stream.fromQueue(stateQueue)] as const),
-            )),
-
-            Effect.provide(QueryState.layer(
-                queryStateTag,
-                stateRef,
-                value => Queue.offer(stateQueue, value).pipe(
-                    Effect.andThen(Ref.set(stateRef, value))
-                ),
-            )),
-        ))
-    )
-
-    const setInitialRefreshState = queryStateTag.pipe(
-        Effect.flatMap(state => state.update(previous => {
-            if (AsyncData.isSuccess(previous) || AsyncData.isFailure(previous))
-                return AsyncData.refreshing(previous)
-            if (AsyncData.isRefreshing(previous))
-                return AsyncData.refreshing(previous.previous)
-            return AsyncData.loading()
-        }))
-    )
-
-    const forkRefresh = Queue.unbounded<AsyncData.AsyncData<A | FallbackA, Exclude<E, HandledE>>>().pipe(
-        Effect.flatMap(stateQueue => interrupt.pipe(
-            Effect.andThen(Effect.addFinalizer(() => Ref.set(fiberRef, Option.none()).pipe(
-                Effect.andThen(Queue.shutdown(stateQueue))
-            )).pipe(
-                Effect.andThen(setInitialRefreshState),
-                Effect.andThen(run),
-                Effect.scoped,
-                Effect.forkDaemon,
-            )),
-
-            Effect.tap(fiber => Ref.set(fiberRef, Option.some(fiber))),
-            Effect.map(fiber => [fiber, Stream.fromQueue(stateQueue)] as const),
-
-            Effect.provide(QueryState.layer(
-                queryStateTag,
-                stateRef,
-                value => Queue.offer(stateQueue, value).pipe(
-                    Effect.andThen(Ref.set(stateRef, value))
-                ),
-            )),
-        ))
-    )
-
-    const fetchOnKeyChange = Effect.addFinalizer(() => interrupt).pipe(
-        Effect.andThen(Stream.runForEach(Stream.changes(key), latestKey =>
-            Ref.set(latestKeyRef, Option.some(latestKey)).pipe(
-                Effect.andThen(forkFetch)
-            )
-        ))
-    )
-
-    const refreshOnWindowFocus = Stream.runForEach(
-        BrowserStream.fromEventListenerWindow("focus"),
-        () => forkRefresh,
-    )
-
-    return {
-        context,
-
-        latestKeyRef,
-        stateRef,
-        fiberRef,
-
-        forkInterrupt,
-        forkFetch,
-        forkRefresh,
-
-        fetchOnKeyChange,
-        refreshOnWindowFocus,
-    }
-})

packages/extension-query/src/internal/index.ts

@@ -1,3 +1 @@
-export * as MutationRunner from "./MutationRunner.js"
-export * as QueryRunner from "./QueryRunner.js"
 export * as QueryState from "./QueryState.js"

packages/reffuse/package.json

@@ -1,6 +1,6 @@
 {
   "name": "reffuse",
-  "version": "0.1.9",
+  "version": "0.1.13",
   "type": "module",
   "files": [
     "./README.md",
@@ -35,7 +35,7 @@
   },
   "peerDependencies": {
     "@types/react": "^19.0.0",
-    "effect": "^3.13.0",
+    "effect": "^3.15.0",
     "react": "^19.0.0"
   }
 }

packages/reffuse/src/ReffuseContext.ts

@@ -1,4 +1,4 @@
-import { Array, Context, Effect, ExecutionStrategy, Exit, Layer, Ref, Runtime, Scope } from "effect"
+import { Array, Context, Effect, ExecutionStrategy, Exit, Layer, Match, Ref, Runtime, Scope } from "effect"
 import * as React from "react"
 import * as ReffuseRuntime from "./ReffuseRuntime.js"
 
@@ -25,6 +25,8 @@ export type R<T> = T extends ReffuseContext<infer R> ? R : never
 export type ReactProvider<R> = React.FC<{
     readonly layer: Layer.Layer<R, unknown, Scope.Scope>
     readonly scope?: Scope.Scope
+    readonly finalizerExecutionStrategy?: ExecutionStrategy.ExecutionStrategy
+    readonly finalizerExecutionMode?: "sync" | "fork"
     readonly children?: React.ReactNode
 }>
 
@@ -32,16 +34,25 @@ const makeProvider = <R>(Context: React.Context<Context.Context<R>>): ReactProvi
     return function ReffuseContextReactProvider(props) {
         const runtime = ReffuseRuntime.useRuntime()
         const runSync = React.useMemo(() => Runtime.runSync(runtime), [runtime])
+        const runFork = React.useMemo(() => Runtime.runFork(runtime), [runtime])
 
         const makeScope = React.useMemo(() => props.scope
-            ? Scope.fork(props.scope, ExecutionStrategy.sequential)
-            : Scope.make(),
+            ? Scope.fork(props.scope, props.finalizerExecutionStrategy ?? ExecutionStrategy.sequential)
+            : Scope.make(props.finalizerExecutionStrategy ?? ExecutionStrategy.sequential),
         [props.scope])
 
-        const makeContext = React.useCallback((scope: Scope.CloseableScope) => Effect.context<R>().pipe(
+        const makeContext = (scope: Scope.CloseableScope) => Effect.context<R>().pipe(
             Effect.provide(props.layer),
             Effect.provideService(Scope.Scope, scope),
-        ), [props.layer])
+        )
+
+        const closeScope = (scope: Scope.CloseableScope) => Scope.close(scope, Exit.void).pipe(
+            effect => Match.value(props.finalizerExecutionMode ?? "sync").pipe(
+                Match.when("sync", () => { runSync(effect) }),
+                Match.when("fork", () => { runFork(effect) }),
+                Match.exhaustive,
+            )
+        )
 
         const [isInitialRun, initialScope, initialValue] = React.useMemo(() => Effect.Do.pipe(
             Effect.bind("isInitialRun", () => Ref.make(true)),
@@ -57,7 +68,7 @@ const makeProvider = <R>(Context: React.Context<Context.Context<R>>): ReactProvi
             Effect.if({
                 onTrue: () => Ref.set(isInitialRun, false).pipe(
                     Effect.map(() =>
-                        () => runSync(Scope.close(initialScope, Exit.void))
+                        () => closeScope(initialScope)
                     )
                 ),
 
@@ -68,13 +79,13 @@ const makeProvider = <R>(Context: React.Context<Context.Context<R>>): ReactProvi
                         Effect.sync(() => setValue(context))
                     ),
                     Effect.map(({ scope }) =>
-                        () => runSync(Scope.close(scope, Exit.void))
+                        () => closeScope(scope)
                     ),
                 ),
             }),
 
             runSync,
-        ), [makeScope, makeContext, runSync])
+        ), [makeScope, runSync, runFork])
 
         return React.createElement(Context, { ...props, value })
     }
@@ -84,6 +95,7 @@ export type AsyncReactProvider<R> = React.FC<{
     readonly layer: Layer.Layer<R, unknown, Scope.Scope>
     readonly scope?: Scope.Scope
     readonly finalizerExecutionStrategy?: ExecutionStrategy.ExecutionStrategy
+    readonly finalizerExecutionMode?: "sync" | "fork"
     readonly fallback?: React.ReactNode
     readonly children?: React.ReactNode
 }>
@@ -112,7 +124,7 @@ const makeAsyncProvider = <R>(Context: React.Context<Context.Context<R>>): Async
 
             const scope = runSync(props.scope
                 ? Scope.fork(props.scope, props.finalizerExecutionStrategy ?? ExecutionStrategy.sequential)
-                : Scope.make(props.finalizerExecutionStrategy)
+                : Scope.make(props.finalizerExecutionStrategy ?? ExecutionStrategy.sequential)
             )
 
             Effect.context<R>().pipe(
@@ -126,7 +138,13 @@ const makeAsyncProvider = <R>(Context: React.Context<Context.Context<R>>): Async
                 effect => runFork(effect, { ...props, scope }),
             )
 
-            return () => { runFork(Scope.close(scope, Exit.void)) }
+            return () => Scope.close(scope, Exit.void).pipe(
+                effect => Match.value(props.finalizerExecutionMode ?? "sync").pipe(
+                    Match.when("sync", () => { runSync(effect) }),
+                    Match.when("fork", () => { runFork(effect) }),
+                    Match.exhaustive,
+                )
+            )
         }, [props.layer, runSync, runFork])
 
         return React.createElement(React.Suspense, {

packages/reffuse/src/ReffuseNamespace.ts

@@ -1,4 +1,4 @@
-import { type Context, Effect, ExecutionStrategy, Exit, type Fiber, type Layer, Option, pipe, Pipeable, Queue, Ref, Runtime, Scope, Stream, SubscriptionRef } from "effect"
+import { type Context, Effect, ExecutionStrategy, Exit, type Fiber, Layer, Match, Option, pipe, Pipeable, PubSub, Ref, Runtime, Scope, Stream, SubscriptionRef } from "effect"
 import * as React from "react"
 import * as ReffuseContext from "./ReffuseContext.js"
 import * as ReffuseRuntime from "./ReffuseRuntime.js"
@@ -14,6 +14,11 @@ export interface ScopeOptions {
     readonly finalizerExecutionStrategy?: ExecutionStrategy.ExecutionStrategy
 }
 
+export interface UseScopeOptions extends RenderOptions, ScopeOptions {
+    readonly scope?: Scope.Scope
+    readonly finalizerExecutionMode?: "sync" | "fork"
+}
+
 export type RefsA<T extends readonly SubscriptionRef.SubscriptionRef<any>[]> = {
     [K in keyof T]: Effect.Effect.Success<T[K]>
 }
@@ -23,7 +28,8 @@ export abstract class ReffuseNamespace<R> {
     declare ["constructor"]: ReffuseNamespaceClass<R>
 
     constructor() {
-        this.SubRef = this.SubRef.bind(this as any) as any
+        this.SubRefFromGetSet = this.SubRefFromGetSet.bind(this as any) as any
+        this.SubRefFromPath = this.SubRefFromPath.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
@@ -88,6 +94,56 @@ export abstract class ReffuseNamespace<R> {
         ), [runtime, context])
     }
 
+    useScope<R>(
+        this: ReffuseNamespace<R>,
+        deps: React.DependencyList = [],
+        options?: UseScopeOptions,
+    ): readonly [scope: Scope.Scope, layer: Layer.Layer<Scope.Scope>] {
+        const runSync = this.useRunSync()
+        const runFork = this.useRunFork()
+
+        const makeScope = React.useMemo(() => options?.scope
+            ? Scope.fork(options.scope, options.finalizerExecutionStrategy ?? ExecutionStrategy.sequential)
+            : Scope.make(options?.finalizerExecutionStrategy ?? ExecutionStrategy.sequential),
+        [options?.scope])
+
+        const closeScope = (scope: Scope.CloseableScope) => Scope.close(scope, Exit.void).pipe(
+            effect => Match.value(options?.finalizerExecutionMode ?? "sync").pipe(
+                Match.when("sync", () => { runSync(effect) }),
+                Match.when("fork", () => { runFork(effect) }),
+                Match.exhaustive,
+            )
+        )
+
+        const [isInitialRun, initialScope] = React.useMemo(() => runSync(
+            Effect.all([Ref.make(true), makeScope])
+        ), [makeScope])
+
+        const [scope, setScope] = React.useState(initialScope)
+
+        React.useEffect(() => isInitialRun.pipe(
+            Effect.if({
+                onTrue: () => Effect.as(
+                    Ref.set(isInitialRun, false),
+                    () => closeScope(initialScope),
+                ),
+
+                onFalse: () => makeScope.pipe(
+                    Effect.tap(v => Effect.sync(() => setScope(v))),
+                    Effect.map(v => () => closeScope(v)),
+                ),
+            }),
+
+            runSync,
+        ), [
+            makeScope,
+            ...options?.doNotReExecuteOnRuntimeOrContextChange ? [] : [runSync, runFork],
+            ...deps,
+        ])
+
+        return React.useMemo(() => [scope, Layer.succeed(Scope.Scope, scope)] as const, [scope])
+    }
+
     /**
      * Reffuse equivalent to `React.useMemo`.
      *
@@ -111,53 +167,6 @@ export abstract class ReffuseNamespace<R> {
         ])
     }
 
-    useMemoScoped<A, E, R>(
-        this: ReffuseNamespace<R>,
-        effect: () => Effect.Effect<A, E, R | Scope.Scope>,
-        deps: React.DependencyList,
-        options?: RenderOptions & ScopeOptions,
-    ): A {
-        const runSync = this.useRunSync()
-
-        const [isInitialRun, initialScope, initialValue] = React.useMemo(() => Effect.Do.pipe(
-            Effect.bind("isInitialRun", () => Ref.make(true)),
-            Effect.bind("scope", () => Scope.make(options?.finalizerExecutionStrategy)),
-            Effect.bind("value", ({ scope }) => Effect.provideService(effect(), Scope.Scope, scope)),
-            Effect.map(({ isInitialRun, scope, value }) => [isInitialRun, scope, value] as const),
-            runSync,
-        ), [])
-
-        const [value, setValue] = React.useState(initialValue)
-
-        React.useEffect(() => isInitialRun.pipe(
-            Effect.if({
-                onTrue: () => Ref.set(isInitialRun, false).pipe(
-                    Effect.map(() =>
-                        () => runSync(Scope.close(initialScope, Exit.void))
-                    )
-                ),
-
-                onFalse: () => Effect.Do.pipe(
-                    Effect.bind("scope", () => Scope.make(options?.finalizerExecutionStrategy)),
-                    Effect.bind("value", ({ scope }) => Effect.provideService(effect(), Scope.Scope, scope)),
-                    Effect.tap(({ value }) =>
-                        Effect.sync(() => setValue(value))
-                    ),
-                    Effect.map(({ scope }) =>
-                        () => runSync(Scope.close(scope, Exit.void))
-                    ),
-                ),
-            }),
-
-            runSync,
-        ), [
-            ...options?.doNotReExecuteOnRuntimeOrContextChange ? [] : [runSync],
-            ...deps,
-        ])
-
-        return value
-    }
-
     /**
      * Reffuse equivalent to `React.useEffect`.
      *
@@ -378,25 +387,46 @@ export abstract class ReffuseNamespace<R> {
         ])
     }
 
-    useRef<A, R>(
+    useRef<A, E, R>(
         this: ReffuseNamespace<R>,
-        value: A,
+        initialValue: () => Effect.Effect<A, E, R>,
     ): SubscriptionRef.SubscriptionRef<A> {
         return this.useMemo(
-            () => SubscriptionRef.make(value),
+            () => Effect.flatMap(initialValue(), SubscriptionRef.make),
             [],
             { doNotReExecuteOnRuntimeOrContextChange: true }, // Do not recreate the ref when the context changes
         )
     }
 
-    useSubRef<B, const P extends PropertyPath.Paths<B>, R>(
+    useRefFromReactiveValue<A, R>(
+        this: ReffuseNamespace<R>,
+        value: A,
+    ): SubscriptionRef.SubscriptionRef<A> {
+        const ref = this.useRef(() => Effect.succeed(value))
+        this.useEffect(() => Ref.set(ref, value), [value], { doNotReExecuteOnRuntimeOrContextChange: true })
+        return ref
+    }
+
+    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>(
         this: ReffuseNamespace<R>,
         parent: SubscriptionRef.SubscriptionRef<B>,
         path: P,
     ): SubscriptionSubRef.SubscriptionSubRef<PropertyPath.ValueFromPath<B, P>, B> {
         return React.useMemo(
             () => SubscriptionSubRef.makeFromPath(parent, path),
-            [parent],
+            [parent, ...path],
         )
     }
 
@@ -455,36 +485,77 @@ export abstract class ReffuseNamespace<R> {
         return [reactStateValue, setValue]
     }
 
-    useStreamFromValues<const A extends React.DependencyList, R>(
+    useStreamFromReactiveValues<const A extends React.DependencyList, R>(
         this: ReffuseNamespace<R>,
         values: A,
     ): Stream.Stream<A> {
-        const [queue, stream] = this.useMemo(() => Queue.unbounded<A>().pipe(
-            Effect.map(queue => [queue, Stream.fromQueue(queue)] as const)
-        ), [])
+        const [, scopeLayer] = this.useScope([], { finalizerExecutionMode: "fork" })
 
-        this.useEffect(() => Queue.offer(queue, values), values)
+        const { latest, pubsub, stream } = this.useMemo(() => Effect.Do.pipe(
+            Effect.bind("latest", () => Ref.make(values)),
+            Effect.bind("pubsub", () => Effect.acquireRelease(PubSub.unbounded<A>(), PubSub.shutdown)),
+            Effect.let("stream", ({ latest, pubsub }) => Ref.get(latest).pipe(
+                Effect.flatMap(a => Effect.map(
+                    Stream.fromPubSub(pubsub, { scoped: true }),
+                    s => Stream.concat(Stream.make(a), s),
+                )),
+                Stream.unwrapScoped,
+            )),
+            Effect.provide(scopeLayer),
+        ), [scopeLayer], { doNotReExecuteOnRuntimeOrContextChange: true })
+
+        this.useEffect(() => Ref.set(latest, values).pipe(
+            Effect.andThen(PubSub.publish(pubsub, values)),
+            Effect.unlessEffect(PubSub.isShutdown(pubsub)),
+        ), values, { doNotReExecuteOnRuntimeOrContextChange: true })
 
         return stream
     }
 
-    useSubscribeStream<A, InitialA extends A | undefined, E, R>(
+    useSubscribeStream<A, E, R>(
         this: ReffuseNamespace<R>,
         stream: Stream.Stream<A, E, R>,
-        initialValue?: InitialA,
-    ): InitialA extends A ? Option.Some<A> : Option.Option<A> {
-        const [reactStateValue, setReactStateValue] = React.useState<Option.Option<A>>(Option.fromNullable(initialValue))
+    ): Option.Option<A>
+    useSubscribeStream<A, E, IE, R>(
+        this: ReffuseNamespace<R>,
+        stream: Stream.Stream<A, E, R>,
+        initialValue: () => Effect.Effect<A, IE, R>,
+    ): Option.Some<A>
+    useSubscribeStream<A, E, IE, R>(
+        this: ReffuseNamespace<R>,
+        stream: Stream.Stream<A, E, R>,
+        initialValue?: () => Effect.Effect<A, IE, R>,
+    ): Option.Option<A> {
+        const [reactStateValue, setReactStateValue] = React.useState(this.useMemo(
+            () => initialValue
+                ? Effect.map(initialValue(), Option.some)
+                : Effect.succeed(Option.none()),
+            [],
+            { doNotReExecuteOnRuntimeOrContextChange: true },
+        ))
 
         this.useFork(() => Stream.runForEach(
             Stream.changesWith(stream, (x, y) => x === y),
             v => Effect.sync(() => setReactStateValue(Option.some(v))),
         ), [stream])
 
-        return reactStateValue as InitialA extends A ? Option.Some<A> : Option.Option<A>
+        return reactStateValue
     }
 
 
-    SubRef<B, const P extends PropertyPath.Paths<B>, R>(
+    SubRefFromGetSet<A, B, R>(
+        this: ReffuseNamespace<R>,
+        props: {
+            readonly parent: SubscriptionRef.SubscriptionRef<B>,
+            readonly getter: (parentValue: B) => A,
+            readonly setter: (parentValue: B, value: A) => B,
+            readonly children: (subRef: SubscriptionSubRef.SubscriptionSubRef<A, B>) => React.ReactNode
+        },
+    ): React.ReactNode {
+        return props.children(this.useSubRefFromGetSet(props.parent, props.getter, props.setter))
+    }
+
+    SubRefFromPath<B, const P extends PropertyPath.Paths<B>, R>(
         this: ReffuseNamespace<R>,
         props: {
             readonly parent: SubscriptionRef.SubscriptionRef<B>,
@@ -492,7 +563,7 @@ export abstract class ReffuseNamespace<R> {
             readonly children: (subRef: SubscriptionSubRef.SubscriptionSubRef<PropertyPath.ValueFromPath<B, P>, B>) => React.ReactNode
         },
     ): React.ReactNode {
-        return props.children(this.useSubRef(props.parent, props.path))
+        return props.children(this.useSubRefFromPath(props.parent, props.path))
     }
 
     SubscribeRefs<
@@ -518,15 +589,30 @@ export abstract class ReffuseNamespace<R> {
         return props.children(this.useRefState(props.ref))
     }
 
-    SubscribeStream<A, InitialA extends A | undefined, E, R>(
+    SubscribeStream<A, E, R>(
         this: ReffuseNamespace<R>,
         props: {
             readonly stream: Stream.Stream<A, E, R>
-            readonly initialValue?: InitialA
-            readonly children: (latestValue: InitialA extends A ? Option.Some<A> : Option.Option<A>) => React.ReactNode
+            readonly children: (latestValue: Option.Option<A>) => React.ReactNode
+        },
+    ): React.ReactNode
+    SubscribeStream<A, E, IE, R>(
+        this: ReffuseNamespace<R>,
+        props: {
+            readonly stream: Stream.Stream<A, E, R>
+            readonly initialValue: () => Effect.Effect<A, IE, R>
+            readonly children: (latestValue: Option.Some<A>) => React.ReactNode
+        },
+    ): React.ReactNode
+    SubscribeStream<A, E, IE, R>(
+        this: ReffuseNamespace<R>,
+        props: {
+            readonly stream: Stream.Stream<A, E, R>
+            readonly initialValue?: () => Effect.Effect<A, IE, R>
+            readonly children: (latestValue: Option.Some<A>) => React.ReactNode
         },
     ): React.ReactNode {
-        return props.children(this.useSubscribeStream(props.stream, props.initialValue))
+        return props.children(this.useSubscribeStream(props.stream, props.initialValue as () => Effect.Effect<A, IE, R>))
     }
 }
 

packages/reffuse/src/types/PropertyPath.ts

@@ -1,24 +1,29 @@
 import { Array, Function, Option, Predicate } from "effect"
 
 
-export type Paths<T> = [] | (
-    T extends readonly any[] ? ArrayPaths<T> :
-    T extends object ? ObjectPaths<T> :
+type Prev = readonly [never, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+
+export type Paths<T, D extends number = 5, Seen = never> = [] | (
+    D extends never ? [] :
+    T extends Seen ? [] :
+    T extends readonly any[] ? ArrayPaths<T, D, Seen | T> :
+    T extends object ? ObjectPaths<T, D, Seen | T> :
     never
 )
 
-export type ArrayPaths<T extends readonly any[]> = {
+export type ArrayPaths<T extends readonly any[], D extends number, Seen> = {
     [K in keyof T as K extends number ? K : never]:
         | [K]
-        | [K, ...Paths<T[K]>]
+        | [K, ...Paths<T[K], Prev[D], Seen>]
 } extends infer O
     ? O[keyof O]
     : never
 
-export type ObjectPaths<T extends object> = {
-    [K in keyof T as K extends string | number | symbol ? K : never]:
-        | [K]
-        | [K, ...Paths<T[K]>]
+export type ObjectPaths<T extends object, D extends number, Seen> = {
+    [K in keyof T as K extends string | number | symbol ? K : never]-?:
+        NonNullable<T[K]> extends infer V
+            ? [K] | [K, ...Paths<V, Prev[D], Seen>]
+            : never
 } extends infer O
     ? O[keyof O]
     : never

packages/reffuse/src/types/SubscriptionSubRef.ts

@@ -52,7 +52,7 @@ class SubscriptionSubRefImpl<in out A, in out B> extends Effectable.Class<A> imp
         readonly setter: (parentValue: B, value: A) => B,
     ) {
         super()
-        this.get = Ref.get(this.parent).pipe(Effect.map(this.getter))
+        this.get = Effect.map(Ref.get(this.parent), this.getter)
     }
 
     commit() {

packages/reffuse/tsconfig.json

@@ -26,7 +26,13 @@
 
     // Build
     "outDir": "./dist",
-    "declaration": true
+    "declaration": true,
+
+    "plugins": [
+      {
+        "name": "@effect/language-service"
+      }
+    ]
   },
 
   "include": ["./src"]