0.1.13 (#18)

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

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/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

@@ -19,6 +19,7 @@ import { Route as LazyrefImport } from './routes/lazyref'
 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'
@@ -73,6 +74,12 @@ 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',
@@ -172,6 +179,13 @@ 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
+    }
   }
 }
 
@@ -189,6 +203,7 @@ export interface FileRoutesByFullPath {
   '/query/service': typeof QueryServiceRoute
   '/query/usemutation': typeof QueryUsemutationRoute
   '/query/usequery': typeof QueryUsequeryRoute
+  '/streams/pull': typeof StreamsPullRoute
 }
 
 export interface FileRoutesByTo {
@@ -203,6 +218,7 @@ export interface FileRoutesByTo {
   '/query/service': typeof QueryServiceRoute
   '/query/usemutation': typeof QueryUsemutationRoute
   '/query/usequery': typeof QueryUsequeryRoute
+  '/streams/pull': typeof StreamsPullRoute
 }
 
 export interface FileRoutesById {
@@ -218,6 +234,7 @@ export interface FileRoutesById {
   '/query/service': typeof QueryServiceRoute
   '/query/usemutation': typeof QueryUsemutationRoute
   '/query/usequery': typeof QueryUsequeryRoute
+  '/streams/pull': typeof StreamsPullRoute
 }
 
 export interface FileRouteTypes {
@@ -234,6 +251,7 @@ export interface FileRouteTypes {
     | '/query/service'
     | '/query/usemutation'
     | '/query/usequery'
+    | '/streams/pull'
   fileRoutesByTo: FileRoutesByTo
   to:
     | '/'
@@ -247,6 +265,7 @@ export interface FileRouteTypes {
     | '/query/service'
     | '/query/usemutation'
     | '/query/usequery'
+    | '/streams/pull'
   id:
     | '__root__'
     | '/'
@@ -260,6 +279,7 @@ export interface FileRouteTypes {
     | '/query/service'
     | '/query/usemutation'
     | '/query/usequery'
+    | '/streams/pull'
   fileRoutesById: FileRoutesById
 }
 
@@ -275,6 +295,7 @@ export interface RootRouteChildren {
   QueryServiceRoute: typeof QueryServiceRoute
   QueryUsemutationRoute: typeof QueryUsemutationRoute
   QueryUsequeryRoute: typeof QueryUsequeryRoute
+  StreamsPullRoute: typeof StreamsPullRoute
 }
 
 const rootRouteChildren: RootRouteChildren = {
@@ -289,6 +310,7 @@ const rootRouteChildren: RootRouteChildren = {
   QueryServiceRoute: QueryServiceRoute,
   QueryUsemutationRoute: QueryUsemutationRoute,
   QueryUsequeryRoute: QueryUsequeryRoute,
+  StreamsPullRoute: StreamsPullRoute,
 }
 
 export const routeTree = rootRoute
@@ -311,7 +333,8 @@ export const routeTree = rootRoute
         "/todos",
         "/query/service",
         "/query/usemutation",
-        "/query/usequery"
+        "/query/usequery",
+        "/streams/pull"
       ]
     },
     "/": {
@@ -346,6 +369,9 @@ 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/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")({
@@ -10,52 +24,39 @@ export const Route = createFileRoute("/tests")({
 })
 
 function RouteComponent() {
-    const deepRef = R.useRef({ value: "poulet" })
-    const deepValueRef = R.useSubRefFromGetSet(
-        deepRef,
-        b => b.value,
-        (b, a) => ({ ...b, value: a }),
-    )
+    const 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": "0.1.8",
+  "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

@@ -1,8 +1,8 @@
-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"
-import { SetStateAction, SubscriptionSubRef } from "./types/index.js"
+import { type PropertyPath, SetStateAction, SubscriptionSubRef } from "./types/index.js"
 
 
 export interface RenderOptions {
@@ -14,11 +14,22 @@ 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]>
+}
+
 
 export abstract class ReffuseNamespace<R> {
     declare ["constructor"]: ReffuseNamespaceClass<R>
 
     constructor() {
+        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
@@ -83,6 +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`.
      *
@@ -106,53 +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`.
      *
@@ -373,17 +387,26 @@ 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
         )
     }
 
+    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>,
@@ -396,24 +419,35 @@ export abstract class ReffuseNamespace<R> {
         )
     }
 
+    useSubRefFromPath<B, const P extends PropertyPath.Paths<B>, R>(
+        this: ReffuseNamespace<R>,
+        parent: SubscriptionRef.SubscriptionRef<B>,
+        path: P,
+    ): SubscriptionSubRef.SubscriptionSubRef<PropertyPath.ValueFromPath<B, P>, B> {
+        return React.useMemo(
+            () => SubscriptionSubRef.makeFromPath(parent, path),
+            [parent],
+        )
+    }
+
     useSubscribeRefs<
         const Refs extends readonly SubscriptionRef.SubscriptionRef<any>[],
         R,
     >(
         this: ReffuseNamespace<R>,
         ...refs: Refs
-    ): [...{ [K in keyof Refs]: Effect.Effect.Success<Refs[K]> }] {
+    ): RefsA<Refs> {
         const [reactStateValue, setReactStateValue] = React.useState(this.useMemo(
             () => Effect.all(refs as readonly SubscriptionRef.SubscriptionRef<any>[]),
             [],
             { doNotReExecuteOnRuntimeOrContextChange: true },
-        ) as [...{ [K in keyof Refs]: Effect.Effect.Success<Refs[K]> }])
+        ) as RefsA<Refs>)
 
         this.useFork(() => pipe(
             refs.map(ref => Stream.changesWith(ref.changes, (x, y) => x === y)),
             streams => Stream.zipLatestAll(...streams),
             Stream.runForEach(v =>
-                Effect.sync(() => setReactStateValue(v as [...{ [K in keyof Refs]: Effect.Effect.Success<Refs[K]> }]))
+                Effect.sync(() => setReactStateValue(v as RefsA<Refs>))
             ),
         ), refs)
 
@@ -451,35 +485,87 @@ 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
     }
 
 
+    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>,
+            readonly path: P,
+            readonly children: (subRef: SubscriptionSubRef.SubscriptionSubRef<PropertyPath.ValueFromPath<B, P>, B>) => React.ReactNode
+        },
+    ): React.ReactNode {
+        return props.children(this.useSubRefFromPath(props.parent, props.path))
+    }
+
     SubscribeRefs<
         const Refs extends readonly SubscriptionRef.SubscriptionRef<any>[],
         R,
@@ -487,7 +573,7 @@ export abstract class ReffuseNamespace<R> {
         this: ReffuseNamespace<R>,
         props: {
             readonly refs: Refs
-            readonly children: (...args: [...{ [K in keyof Refs]: Effect.Effect.Success<Refs[K]> }]) => React.ReactNode
+            readonly children: (...args: RefsA<Refs>) => React.ReactNode
         },
     ): React.ReactNode {
         return props.children(...this.useSubscribeRefs(...props.refs))
@@ -503,15 +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

@@ -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/reffuse/src/types/SubscriptionSubRef.ts

@@ -1,10 +1,16 @@
-import { Effect, Effectable, Readable, Ref, Stream, Subscribable, SubscriptionRef, SynchronizedRef, type Types } from "effect"
+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 {
@@ -16,6 +22,14 @@ export declare namespace SubscriptionSubRef {
     }
 }
 
+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) => _ }
@@ -38,7 +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() {
@@ -75,3 +89,12 @@ export const makeFromGetSet = <A, 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/reffuse/src/types/index.ts

@@ -1,2 +1,3 @@
+export * as PropertyPath from "./PropertyPath.js"
 export * as SetStateAction from "./SetStateAction.js"
 export * as SubscriptionSubRef from "./SubscriptionSubRef.js"