Refactor Query

This PR contains the following updates:

| Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [@effect/language-service](https://github.com/Effect-TS/language-service) | [`^0.72.0` → `^0.75.0`](https://renovatebot.com/diffs/npm/@effect%2flanguage-service/0.72.1/0.75.1) | ![age](https://developer.mend.io/api/mc/badges/age/npm/@effect%2flanguage-service/0.75.1?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/@effect%2flanguage-service/0.72.1/0.75.1?slim=true) |

---

### Release Notes

<details>
<summary>Effect-TS/language-service (@&#8203;effect/language-service)</summary>

### [`v0.75.1`](https://github.com/Effect-TS/language-service/releases/tag/%40effect/language-service%400.75.1)

[Compare Source](https://github.com/Effect-TS/language-service/compare/@effect/language-service@0.75.0...@effect/language-service@0.75.1)

##### Patch Changes

- [#&#8203;647](https://github.com/Effect-TS/language-service/pull/647) [`489e3f0`](489e3f0572) Thanks [@&#8203;mattiamanzati](https://github.com/mattiamanzati)! - Expose diagnostic quick fixes as refactoring actions to work around TypeScript's limited quick fix handling in some contexts

- [#&#8203;650](https://github.com/Effect-TS/language-service/pull/650) [`6f568cf`](6f568cf37a) Thanks [@&#8203;mattiamanzati](https://github.com/mattiamanzati)! - Fix TypeParser to skip types with generic call signatures. When parsing covariant, contravariant, or invariant types, signatures with type parameters are now correctly rejected instead of being treated as concrete types.

- [#&#8203;649](https://github.com/Effect-TS/language-service/pull/649) [`5858fd1`](5858fd1d87) Thanks [@&#8203;mattiamanzati](https://github.com/mattiamanzati)! - Performance improvements: replace `Nano.gen` with `Nano.fn` named functions across diagnostics, refactors, and code generation modules for better performance tracking and reduced runtime overhead. Add conditional `debugPerformance` flag to avoid unnecessary timing collection when not debugging.

### [`v0.75.0`](https://github.com/Effect-TS/language-service/releases/tag/%40effect/language-service%400.75.0)

[Compare Source](https://github.com/Effect-TS/language-service/compare/@effect/language-service@0.74.0...@effect/language-service@0.75.0)

##### Minor Changes

- [#&#8203;645](https://github.com/Effect-TS/language-service/pull/645) [`a8a7d33`](a8a7d33f3a) Thanks [@&#8203;mattiamanzati](https://github.com/mattiamanzati)! - Add `ServiceMap.Service` class completion for Effect v4, and fix Schema class completions for v4 (`TaggedErrorClass`, `TaggedClass` now available, `ErrorClass` fully-qualified form fixed, `RequestClass` removed)

### [`v0.74.0`](https://github.com/Effect-TS/language-service/releases/tag/%40effect/language-service%400.74.0)

[Compare Source](https://github.com/Effect-TS/language-service/compare/@effect/language-service@0.73.1...@effect/language-service@0.74.0)

##### Minor Changes

- [#&#8203;641](https://github.com/Effect-TS/language-service/pull/641) [`693e5a5`](693e5a5ef2) Thanks [@&#8203;mattiamanzati](https://github.com/mattiamanzati)! - Added Effect v4 support for diagnostics, refactors, and piping features.

  **Diagnostics:**

  - `multipleEffectProvide`: Warns when multiple `Effect.provide` calls are chained, suggesting consolidation
  - `strictEffectProvide`: Warns when using `Effect.provide` with Layer outside of application entry points
  - `missingLayerContext`: Detects missing Layer context requirements
  - `deterministicKeys`: Extended to support `ServiceMap.Service` patterns
  - `leakingRequirements`: Extended to detect leaking requirements in ServiceMap services
  - `schemaSyncInEffect`: Updated with v4-specific method mappings (e.g., `decodeSync` -> `decodeEffect`)

  **Refactors:**

  - `layerMagic`: Automatically compose and build layers based on service dependencies
  - `structuralTypeToSchema`: Convert TypeScript interfaces and type aliases to Effect Schema classes
  - `makeSchemaOpaque`: Enhanced for v4 with support for `Codec`, `DecodingServices`, and `EncodingServices` types
  - `typeToEffectSchema`: Enhanced to support Effect v4 schema patterns

  **Piping:**

  - Added pipe transformation support for Effect v4 including `Effect.fn`, nested pipes, and function call conversions

##### Patch Changes

- [#&#8203;643](https://github.com/Effect-TS/language-service/pull/643) [`68f6d12`](68f6d120ad) Thanks [@&#8203;mattiamanzati](https://github.com/mattiamanzati)! - Disable `schemaUnionOfLiterals` diagnostic for Effect v4, as `Schema.Union` of multiple `Schema.Literal` calls is no longer applicable in v4.

### [`v0.73.1`](https://github.com/Effect-TS/language-service/releases/tag/%40effect/language-service%400.73.1)

[Compare Source](https://github.com/Effect-TS/language-service/compare/@effect/language-service@0.73.0...@effect/language-service@0.73.1)

##### Patch Changes

- [#&#8203;639](https://github.com/Effect-TS/language-service/pull/639) [`ff72045`](ff72045531) Thanks [@&#8203;mattiamanzati](https://github.com/mattiamanzati)! - Add wildcard (`*`) support for `@effect-diagnostics` comment directives. You can now use `*` as a rule name to apply a severity override to all diagnostics at once, e.g. `@effect-diagnostics *:off` disables all Effect diagnostics from that point on. Rule-specific overrides still take precedence over wildcard overrides.

### [`v0.73.0`](https://github.com/Effect-TS/language-service/releases/tag/%40effect/language-service%400.73.0)

[Compare Source](https://github.com/Effect-TS/language-service/compare/@effect/language-service@0.72.1...@effect/language-service@0.73.0)

##### Minor Changes

- [#&#8203;637](https://github.com/Effect-TS/language-service/pull/637) [`616c2cc`](616c2cc21c) Thanks [@&#8203;mattiamanzati](https://github.com/mattiamanzati)! - Add Effect v4 completions support

  - Detect installed Effect version (v3 or v4) and conditionally enable version-specific completions
  - Add `Schema.ErrorClass` and `Schema.RequestClass` completions for Effect v4
  - Disable v3-only completions (`Effect.Service`, `Effect.Tag`, `Schema.TaggedError`, `Schema.TaggedClass`, `Schema.TaggedRequest`, `Context.Tag` self, `Rpc.make` classes, `Schema.brand`, `Model.Class`) when Effect v4 is detected
  - Support lowercase `taggedEnum` in addition to `TaggedEnum` for v4 API compatibility

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0My4zLjQiLCJ1cGRhdGVkSW5WZXIiOiI0My4yNy4wIiwidGFyZ2V0QnJhbmNoIjoibmV4dCIsImxhYmVscyI6W119-->

Reviewed-on: #34
Co-authored-by: Renovate Bot <renovate-bot@valverde.cloud>
Co-committed-by: Renovate Bot <renovate-bot@valverde.cloud>

.gitea/workflows/lint.yaml

@@ -7,10 +7,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Setup Bun
-        uses: oven-sh/setup-bun@v1
+        uses: oven-sh/setup-bun@v2
       - name: Clone repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Install dependencies
         run: bun install --frozen-lockfile
-      - name: Build
+      - name: Lint TypeScript
-        run: bun run build
+        run: bun lint:tsc
+      - name: Lint Biome
+        run: bun lint:biome

.gitea/workflows/publish.yaml

@@ -10,15 +10,19 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Setup Bun
-        uses: oven-sh/setup-bun@v1
+        uses: oven-sh/setup-bun@v2
       - name: Clone repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Install dependencies
         run: bun install --frozen-lockfile
+      - name: Lint TypeScript
+        run: bun lint:tsc
+      - name: Lint Biome
+        run: bun lint:biome
       - name: Build
         run: bun run build
       - name: Publish effect-fc
-        uses: JS-DevTools/npm-publish@v3
+        uses: JS-DevTools/npm-publish@v4
         with:
           package: packages/effect-fc
           access: public

.gitea/workflows/test-build.yaml

@@ -8,16 +8,20 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Setup Bun
-        uses: oven-sh/setup-bun@v1
+        uses: oven-sh/setup-bun@v2
       - name: Setup Node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
-          node-version: "20"
+          node-version: "24"
       - name: Clone repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Install dependencies
         run: bun install --frozen-lockfile
+      - name: Lint TypeScript
+        run: bun lint:tsc
+      - name: Lint Biome
+        run: bun lint:biome
       - name: Build
         run: bun run build
       - name: Pack
-        run: bun run pack
+        run: bun pack

.npmrc

@@ -1 +0,0 @@
-@thilawyn:registry=https://git.valverde.cloud/api/packages/thilawyn/npm/

.vscode/settings.json

@@ -1,3 +1,6 @@
 {
-    "typescript.tsdk": "node_modules/typescript/lib"
+    "typescript.tsdk": "node_modules/typescript/lib",
+    "editor.codeActionsOnSave": {
+        "source.fixAll.biome": "explicit"
+    }
 }

README.md

@@ -1,7 +1,7 @@
 # Effect FC Monorepo
 
-[Effect-TS](https://effect.website/) integration for React 19+ that allows you to write function components using Effect generators.
+[Effect-TS](https://effect.website/) integration for React 19.2+ that allows you to write function components using Effect generators.
 
 This monorepo contains:
 - [The `effect-fc` library](packages/effect-fc)
-- [An example project](packges/example)
+- [An example project](packages/example)

biome.json

@@ -0,0 +1,40 @@
+{
+  "$schema": "https://biomejs.dev/schemas/latest/schema.json",
+  "vcs": {
+    "enabled": false,
+    "clientKind": "git",
+    "useIgnoreFile": false
+  },
+  "files": {
+    "ignoreUnknown": false
+  },
+  "formatter": {
+    "enabled": false
+  },
+  "linter": {
+    "enabled": true,
+    "rules": {
+      "recommended": true,
+      "style": {
+        "useShorthandFunctionType": "off"
+      },
+      "suspicious": {
+        "noExplicitAny": "off",
+        "noShadowRestrictedNames": "off"
+      }
+    }
+  },
+  "javascript": {
+    "formatter": {
+      "quoteStyle": "double"
+    }
+  },
+  "assist": {
+    "enabled": true,
+    "actions": {
+      "source": {
+        "organizeImports": "on"
+      }
+    }
+  }
+}

bunfig.toml

@@ -1,2 +0,0 @@
-[install.scopes]
-"@thilawyn" = "https://git.valverde.cloud/api/packages/thilawyn/npm/"

package.json

@@ -1,23 +1,26 @@
 {
   "name": "@effect-fc/monorepo",
-  "packageManager": "bun@1.2.13",
+  "packageManager": "bun@1.3.6",
   "private": true,
   "workspaces": [
     "./packages/*"
   ],
   "scripts": {
-    "build": "turbo build --filter=!@effect-fc/example",
+    "build": "turbo build",
     "lint:tsc": "turbo lint:tsc",
-    "pack": "turbo pack --filter=!@effect-fc/example",
+    "lint:biome": "turbo lint:biome",
-    "publish": "turbo publish --filter=!@effect-fc/example",
+    "pack": "turbo pack",
-    "clean:cache": "rm -f tsconfig.tsbuildinfo",
+    "clean:cache": "turbo clean:cache",
-    "clean:dist": "rm -rf dist",
+    "clean:dist": "turbo clean:dist",
-    "clean:node": "rm -rf node_modules"
+    "clean:modules": "turbo clean:modules && rm -rf node_modules"
   },
   "devDependencies": {
-    "npm-check-updates": "^18.0.1",
+    "@biomejs/biome": "^2.3.11",
+    "@effect/language-service": "^0.75.0",
+    "@types/bun": "^1.3.6",
+    "npm-check-updates": "^19.3.1",
     "npm-sort": "^0.0.4",
-    "turbo": "^2.5.3",
+    "turbo": "^2.7.5",
-    "typescript": "^5.8.3"
+    "typescript": "^5.9.3"
   }
 }

packages/effect-fc/README.md

@@ -1,35 +1,30 @@
 # Effect FC
 
-[Effect-TS](https://effect.website/) integration for React 19+ that allows you to write function components using Effect generators.
+[Effect-TS](https://effect.website/) integration for React 19.2+ that allows you to write function components using Effect generators.
 
 This library is in early development. While it is (almost) feature complete and mostly usable, expect bugs and quirks. Things are still being ironed out, so ideas and criticisms are more than welcome.
 
 Documentation is currently being written. In the meantime, you can take a look at the `packages/example` directory.
 
 ## Peer dependencies
-- `effect` 3.15+
+- `effect` 3.19+
-- `react` & `@types/react` 19+
+- `react` & `@types/react` 19.2+
 
 ## Known issues
-- React Refresh replacement doesn't work for Effect FC's yet. Page reload is required to view changes. Regular React components are unaffected.
+- React Refresh doesn't work for Effect FC's yet. Page reload is required to view changes. Regular React components are unaffected.
 
 ## What writing components looks like
 ```typescript
-import { Component, Hook, Memoized } from "effect-fc"
+export class Todos extends Component.make("Todos")(function*() {
-import { Todo } from "./Todo"
-import { TodosState } from "./TodosState.service"
-import { runtime } from "@/runtime"
-
-class Todos extends Component.make(function* Todos() {
     const state = yield* TodosState
-    const [todos] = yield* Hook.useSubscribeRefs(state.ref)
+    const [todos] = yield* useSubscribables(state.ref)
 
-    yield* Hook.useOnce(() => Effect.andThen(
+    yield* useOnMount(() => Effect.andThen(
         Console.log("Todos mounted"),
         Effect.addFinalizer(() => Console.log("Todos unmounted")),
     ))
 
-    const TodoFC = yield* Component.useFC(Todo)
+    const TodoFC = yield* Todo
 
     return (
         <Container>
@@ -38,22 +33,26 @@ class Todos extends Component.make(function* Todos() {
             <Flex direction="column" align="stretch" gap="2" mt="2">
                 <TodoFC _tag="new" />
 
-                {Chunk.map(todos, (v, k) =>
+                {Chunk.map(todos, todo =>
-                    <TodoFC key={v.id} _tag="edit" index={k} />
+                    <TodoFC key={todo.id} _tag="edit" id={todo.id} />
                 )}
             </Flex>
         </Container>
     )
-}).pipe(
+}) {}
-    Memoized.memo
-) {}
 
-const TodosEntrypoint = Component.make(function* TodosEntrypoint() {
+const TodosStateLive = TodosState.Default("todos")
-    const context = yield* Hook.useContext(TodosState.Default, { finalizerExecutionMode: "fork" })
+
-    const TodosFC = yield* Effect.provide(Component.useFC(Todos), context)
+const Index = Component.make("Index")(function*() {
+    const context = yield* useContext(TodosStateLive)
+    const TodosFC = yield* Effect.provide(Todos, context)
 
     return <TodosFC />
 }).pipe(
     Component.withRuntime(runtime.context)
 )
+
+export const Route = createFileRoute("/")({
+    component: Index
+})
 ```

packages/effect-fc/biome.json

@@ -0,0 +1,8 @@
+{
+  "$schema": "https://biomejs.dev/schemas/latest/schema.json",
+  "root": false,
+  "extends": "//",
+  "files": {
+    "includes": ["./src/**"]
+  }
+}

packages/effect-fc/package.json

@@ -1,7 +1,7 @@
 {
   "name": "effect-fc",
   "description": "Write React function components with Effect",
-  "version": "0.1.2",
+  "version": "0.2.3",
   "type": "module",
   "files": [
     "./README.md",
@@ -17,29 +17,33 @@
       "types": "./dist/index.d.ts",
       "default": "./dist/index.js"
     },
-    "./types": {
+    "./*": [
-      "types": "./dist/types/index.d.ts",
+      {
-      "default": "./dist/types/index.js"
+        "types": "./dist/*/index.d.ts",
-    },
+        "default": "./dist/*/index.js"
-    "./*": {
+      },
-      "types": "./dist/*.d.ts",
+      {
-      "default": "./dist/*.js"
+        "types": "./dist/*.d.ts",
-    }
+        "default": "./dist/*.js"
+      }
+    ]
   },
   "scripts": {
     "build": "tsc",
     "lint:tsc": "tsc --noEmit",
+    "lint:biome": "biome lint",
     "pack": "npm pack",
-    "clean:cache": "rm -f tsconfig.tsbuildinfo",
+    "clean:cache": "rm -rf .turbo tsconfig.tsbuildinfo",
     "clean:dist": "rm -rf dist",
-    "clean:node": "rm -rf node_modules"
+    "clean:modules": "rm -rf node_modules"
-  },
-  "peerDependencies": {
-    "@types/react": "^19.0.0",
-    "effect": "^3.15.0",
-    "react": "^19.0.0"
   },
   "devDependencies": {
-    "@effect/language-service": "^0.23.3"
+    "@effect/platform-browser": "^0.74.0"
+  },
+  "peerDependencies": {
+    "@effect-atom/atom": "^0.5.0",
+    "@types/react": "^19.2.0",
+    "effect": "^3.19.0",
+    "react": "^19.2.0"
   }
 }

packages/effect-fc/src/Async.ts

@@ -0,0 +1,83 @@
+/** biome-ignore-all lint/complexity/useArrowFunction: necessary for class prototypes */
+import { Effect, Function, Predicate, Runtime, Scope } from "effect"
+import * as React from "react"
+import * as Component from "./Component.js"
+
+
+export const TypeId: unique symbol = Symbol.for("@effect-fc/Async/Async")
+export type TypeId = typeof TypeId
+
+export interface Async extends AsyncOptions {
+    readonly [TypeId]: TypeId
+}
+
+export interface AsyncOptions {
+    readonly defaultFallback?: React.ReactNode
+}
+
+export type AsyncProps = Omit<React.SuspenseProps, "children">
+
+
+export const AsyncPrototype = Object.freeze({
+    [TypeId]: TypeId,
+
+    asFunctionComponent<P extends {}, A extends React.ReactNode, E, R>(
+        this: Component.Component<P, A, E, R> & Async,
+        runtimeRef: React.RefObject<Runtime.Runtime<Exclude<R, Scope.Scope>>>,
+    ) {
+        const SuspenseInner = (props: { readonly promise: Promise<React.ReactNode> }) => React.use(props.promise)
+
+        return ({ fallback, name, ...props }: AsyncProps) => {
+            const promise = Runtime.runPromise(runtimeRef.current)(
+                Effect.andThen(
+                    Component.useScope([], this),
+                    scope => Effect.provideService(this.body(props as P), Scope.Scope, scope),
+                )
+            )
+
+            return React.createElement(
+                React.Suspense,
+                { fallback: fallback ?? this.defaultFallback, name },
+                React.createElement(SuspenseInner, { promise }),
+            )
+        }
+    },
+} as const)
+
+
+export const isAsync = (u: unknown): u is Async => Predicate.hasProperty(u, TypeId)
+
+export const async = <T extends Component.Component<any, any, any, any>>(
+    self: T
+): (
+    & Omit<T, keyof Component.Component.AsComponent<T>>
+    & Component.Component<
+        Component.Component.Props<T> & AsyncProps,
+        Component.Component.Success<T>,
+        Component.Component.Error<T>,
+        Component.Component.Context<T>
+    >
+    & Async
+) => Object.setPrototypeOf(
+    Object.assign(function() {}, self),
+    Object.freeze(Object.setPrototypeOf(
+        Object.assign({}, AsyncPrototype),
+        Object.getPrototypeOf(self),
+    )),
+)
+
+export const withOptions: {
+    <T extends Component.Component<any, any, any, any> & Async>(
+        options: Partial<AsyncOptions>
+    ): (self: T) => T
+    <T extends Component.Component<any, any, any, any> & Async>(
+        self: T,
+        options: Partial<AsyncOptions>,
+    ): T
+} = Function.dual(2, <T extends Component.Component<any, any, any, any> & Async>(
+    self: T,
+    options: Partial<AsyncOptions>,
+): T => Object.setPrototypeOf(
+    Object.assign(function() {}, self, options),
+    Object.getPrototypeOf(self),
+))

packages/effect-fc/src/ErrorObserver.ts

@@ -0,0 +1,62 @@
+import { type Cause, Context, Effect, Exit, Layer, Option, Pipeable, Predicate, PubSub, type Queue, type Scope, Supervisor } from "effect"
+
+
+export const TypeId: unique symbol = Symbol.for("@effect-fc/ErrorObserver/ErrorObserver")
+export type TypeId = typeof TypeId
+
+export interface ErrorObserver<in out E = never> extends Pipeable.Pipeable {
+    readonly [TypeId]: TypeId
+    handle<A, E, R>(effect: Effect.Effect<A, E, R>): Effect.Effect<A, E, R>
+    readonly subscribe: Effect.Effect<Queue.Dequeue<Cause.Cause<E>>, never, Scope.Scope>
+}
+
+export const ErrorObserver = <E = never>(): Context.Tag<ErrorObserver, ErrorObserver<E>> => Context.GenericTag("@effect-fc/ErrorObserver/ErrorObserver")
+
+class ErrorObserverImpl<in out E = never>
+extends Pipeable.Class() implements ErrorObserver<E> {
+    readonly [TypeId]: TypeId = TypeId
+    readonly subscribe: Effect.Effect<Queue.Dequeue<Cause.Cause<E>>, never, Scope.Scope>
+
+    constructor(
+        readonly pubsub: PubSub.PubSub<Cause.Cause<E>>
+    ) {
+        super()
+        this.subscribe = pubsub.subscribe
+    }
+
+    handle<A, EffE, R>(effect: Effect.Effect<A, EffE, R>): Effect.Effect<A, EffE, R> {
+        return Effect.tapErrorCause(effect, cause => PubSub.publish(this.pubsub, cause as Cause.Cause<E>))
+    }
+}
+
+class ErrorObserverSupervisorImpl extends Supervisor.AbstractSupervisor<void> {
+    readonly value = Effect.void
+    constructor(readonly pubsub: PubSub.PubSub<Cause.Cause<never>>) {
+        super()
+    }
+
+    onEnd<A, E>(_value: Exit.Exit<A, E>): void {
+        if (Exit.isFailure(_value)) {
+            Effect.runSync(PubSub.publish(this.pubsub, _value.cause as Cause.Cause<never>))
+        }
+    }
+}
+
+
+export const isErrorObserver = (u: unknown): u is ErrorObserver<unknown> => Predicate.hasProperty(u, TypeId)
+
+export const layer: Layer.Layer<ErrorObserver> = Layer.unwrapEffect(Effect.map(
+    PubSub.unbounded<Cause.Cause<never>>(),
+    pubsub => Layer.merge(
+        Supervisor.addSupervisor(new ErrorObserverSupervisorImpl(pubsub)),
+        Layer.succeed(ErrorObserver(), new ErrorObserverImpl(pubsub)),
+    ),
+))
+
+export const handle = <A, E, R>(effect: Effect.Effect<A, E, R>): Effect.Effect<A, E, R> => Effect.andThen(
+    Effect.serviceOption(ErrorObserver()),
+    Option.match({
+        onSome: observer => observer.handle(effect),
+        onNone: () => effect,
+    }),
+)

packages/effect-fc/src/Form.ts

@@ -0,0 +1,396 @@
+import { Array, Cause, Chunk, type Context, type Duration, Effect, Equal, Exit, Fiber, flow, Hash, HashMap, identity, Option, ParseResult, Pipeable, Predicate, Ref, Schema, type Scope, Stream } from "effect"
+import type * as React from "react"
+import * as Component from "./Component.js"
+import * as Mutation from "./Mutation.js"
+import * as PropertyPath from "./PropertyPath.js"
+import * as Result from "./Result.js"
+import * as Subscribable from "./Subscribable.js"
+import * as SubscriptionRef from "./SubscriptionRef.js"
+import * as SubscriptionSubRef from "./SubscriptionSubRef.js"
+
+
+export const FormTypeId: unique symbol = Symbol.for("@effect-fc/Form/Form")
+export type FormTypeId = typeof FormTypeId
+
+export interface Form<in out A, in out I = A, in out R = never, in out MA = void, in out ME = never, in out MR = never, in out MP = never>
+extends Pipeable.Pipeable {
+    readonly [FormTypeId]: FormTypeId
+
+    readonly schema: Schema.Schema<A, I, R>
+    readonly context: Context.Context<Scope.Scope | R>
+    readonly mutation: Mutation.Mutation<
+        readonly [value: A, form: Form<A, I, R, unknown, unknown, unknown>],
+        MA, ME, MR, MP
+    >
+    readonly autosubmit: boolean
+    readonly debounce: Option.Option<Duration.DurationInput>
+
+    readonly value: Subscribable.Subscribable<Option.Option<A>>
+    readonly encodedValue: SubscriptionRef.SubscriptionRef<I>
+    readonly error: Subscribable.Subscribable<Option.Option<ParseResult.ParseError>>
+    readonly validationFiber: Subscribable.Subscribable<Option.Option<Fiber.Fiber<A, ParseResult.ParseError>>>
+
+    readonly canSubmit: Subscribable.Subscribable<boolean>
+
+    field<const P extends PropertyPath.Paths<I>>(
+        path: P
+    ): Effect.Effect<FormField<PropertyPath.ValueFromPath<A, P>, PropertyPath.ValueFromPath<I, P>>>
+
+    readonly run: Effect.Effect<void>
+    readonly submit: Effect.Effect<Option.Option<Result.Final<MA, ME, MP>>, Cause.NoSuchElementException>
+}
+
+export class FormImpl<in out A, in out I = A, in out R = never, in out MA = void, in out ME = never, in out MR = never, in out MP = never>
+extends Pipeable.Class() implements Form<A, I, R, MA, ME, MR, MP> {
+    readonly [FormTypeId]: FormTypeId = FormTypeId
+
+    constructor(
+        readonly schema: Schema.Schema<A, I, R>,
+        readonly context: Context.Context<Scope.Scope | R>,
+        readonly mutation: Mutation.Mutation<
+            readonly [value: A, form: Form<A, I, R, unknown, unknown, unknown>],
+            MA, ME, MR, MP
+        >,
+        readonly autosubmit: boolean,
+        readonly debounce: Option.Option<Duration.DurationInput>,
+
+        readonly value: SubscriptionRef.SubscriptionRef<Option.Option<A>>,
+        readonly encodedValue: SubscriptionRef.SubscriptionRef<I>,
+        readonly error: SubscriptionRef.SubscriptionRef<Option.Option<ParseResult.ParseError>>,
+        readonly validationFiber: SubscriptionRef.SubscriptionRef<Option.Option<Fiber.Fiber<A, ParseResult.ParseError>>>,
+
+        readonly runSemaphore: Effect.Semaphore,
+        readonly fieldCache: Ref.Ref<HashMap.HashMap<FormFieldKey, FormField<unknown, unknown>>>,
+    ) {
+        super()
+
+        this.canSubmit = Subscribable.map(
+            Subscribable.zipLatestAll(this.value, this.error, this.validationFiber, this.mutation.result),
+            ([value, error, validationFiber, result]) => (
+                Option.isSome(value) &&
+                Option.isNone(error) &&
+                Option.isNone(validationFiber) &&
+                !(Result.isRunning(result) || Result.hasRefreshingFlag(result))
+            ),
+        )
+    }
+
+    field<const P extends PropertyPath.Paths<I>>(
+        path: P
+    ): Effect.Effect<FormField<PropertyPath.ValueFromPath<A, P>, PropertyPath.ValueFromPath<I, P>>> {
+        const key = new FormFieldKey(path)
+        return this.fieldCache.pipe(
+            Effect.map(HashMap.get(key)),
+            Effect.flatMap(Option.match({
+                onSome: v => Effect.succeed(v as FormField<PropertyPath.ValueFromPath<A, P>, PropertyPath.ValueFromPath<I, P>>),
+                onNone: () => Effect.tap(
+                    Effect.succeed(makeFormField(this as Form<A, I, R, MA, ME, MR, MP>, path)),
+                    v => Ref.update(this.fieldCache, HashMap.set(key, v as FormField<unknown, unknown>)),
+                ),
+            })),
+        )
+    }
+
+    readonly canSubmit: Subscribable.Subscribable<boolean>
+
+    get run(): Effect.Effect<void> {
+        return this.runSemaphore.withPermits(1)(Stream.runForEach(
+            this.encodedValue.changes.pipe(
+                Option.isSome(this.debounce) ? Stream.debounce(this.debounce.value) : identity
+            ),
+
+            encodedValue => this.validationFiber.pipe(
+                Effect.andThen(Option.match({
+                    onSome: Fiber.interrupt,
+                    onNone: () => Effect.void,
+                })),
+                Effect.andThen(
+                    Effect.forkScoped(Effect.onExit(
+                        Schema.decode(this.schema, { errors: "all" })(encodedValue),
+                        exit => Effect.andThen(
+                            Exit.matchEffect(exit, {
+                                onSuccess: v => Effect.andThen(
+                                    Ref.set(this.value, Option.some(v)),
+                                    Ref.set(this.error, Option.none()),
+                                ),
+                                onFailure: c => Option.match(Chunk.findFirst(Cause.failures(c), e => e._tag === "ParseError"), {
+                                    onSome: e => Ref.set(this.error, Option.some(e)),
+                                    onNone: () => Effect.void,
+                                }),
+                            }),
+                            Ref.set(this.validationFiber, Option.none()),
+                        ),
+                    )).pipe(
+                        Effect.tap(fiber => Ref.set(this.validationFiber, Option.some(fiber))),
+                        Effect.andThen(Fiber.join),
+                        Effect.andThen(value => this.autosubmit
+                            ? Effect.asVoid(Effect.forkScoped(this.submitValue(value)))
+                            : Effect.void
+                        ),
+                        Effect.forkScoped,
+                    )
+                ),
+                Effect.provide(this.context),
+            ),
+        ))
+    }
+
+    get submit(): Effect.Effect<Option.Option<Result.Final<MA, ME, MP>>, Cause.NoSuchElementException> {
+        return this.value.pipe(
+            Effect.andThen(identity),
+            Effect.andThen(value => this.submitValue(value)),
+        )
+    }
+
+    submitValue(value: A): Effect.Effect<Option.Option<Result.Final<MA, ME, MP>>> {
+        return Effect.whenEffect(
+            Effect.tap(
+                this.mutation.mutate([value, this as any]),
+                result => Result.isFailure(result)
+                    ? Option.match(
+                        Chunk.findFirst(
+                            Cause.failures(result.cause as Cause.Cause<ParseResult.ParseError>),
+                            e => e._tag === "ParseError",
+                        ),
+                        {
+                            onSome: e => Ref.set(this.error, Option.some(e)),
+                            onNone: () => Effect.void,
+                        },
+                    )
+                    : Effect.void
+            ),
+            this.canSubmit.get,
+        )
+    }
+}
+
+export const isForm = (u: unknown): u is Form<unknown, unknown, unknown, unknown, unknown, unknown> => Predicate.hasProperty(u, FormTypeId)
+
+export declare namespace make {
+    export interface Options<in out A, in out I = A, in out R = never, in out MA = void, in out ME = never, in out MR = never, in out MP = never>
+    extends Mutation.make.Options<
+        readonly [value: NoInfer<A>, form: Form<NoInfer<A>, NoInfer<I>, NoInfer<R>, unknown, unknown, unknown>],
+        MA, ME, MR, MP
+    > {
+        readonly schema: Schema.Schema<A, I, R>
+        readonly initialEncodedValue: NoInfer<I>
+        readonly autosubmit?: boolean
+        readonly debounce?: Duration.DurationInput
+    }
+}
+
+export const make = Effect.fnUntraced(function* <A, I = A, R = never, MA = void, ME = never, MR = never, MP = never>(
+    options: make.Options<A, I, R, MA, ME, MR, MP>
+): Effect.fn.Return<
+    Form<A, I, R, MA, ME, Result.forkEffect.OutputContext<MA, ME, MR, MP>, MP>,
+    never,
+    Scope.Scope | R | Result.forkEffect.OutputContext<MA, ME, MR, MP>
+> {
+    return new FormImpl(
+        options.schema,
+        yield* Effect.context<Scope.Scope | R>(),
+        yield* Mutation.make(options),
+        options.autosubmit ?? false,
+        Option.fromNullable(options.debounce),
+
+        yield* SubscriptionRef.make(Option.none<A>()),
+        yield* SubscriptionRef.make(options.initialEncodedValue),
+        yield* SubscriptionRef.make(Option.none<ParseResult.ParseError>()),
+        yield* SubscriptionRef.make(Option.none<Fiber.Fiber<A, ParseResult.ParseError>>()),
+
+        yield* Effect.makeSemaphore(1),
+        yield* Ref.make(HashMap.empty<FormFieldKey, FormField<unknown, unknown>>()),
+    )
+})
+
+export declare namespace service {
+    export interface Options<in out A, in out I = A, in out R = never, in out MA = void, in out ME = never, in out MR = never, in out MP = never>
+    extends make.Options<A, I, R, MA, ME, MR, MP> {}
+}
+
+export const service = <A, I = A, R = never, MA = void, ME = never, MR = never, MP = never>(
+    options: service.Options<A, I, R, MA, ME, MR, MP>
+): Effect.Effect<
+    Form<A, I, R, MA, ME, Result.forkEffect.OutputContext<MA, ME, MR, MP>, MP>,
+    never,
+    Scope.Scope | R | Result.forkEffect.OutputContext<MA, ME, MR, MP>
+> => Effect.tap(
+    make(options),
+    form => Effect.forkScoped(form.run),
+)
+
+
+export const FormFieldTypeId: unique symbol = Symbol.for("@effect-fc/Form/FormField")
+export type FormFieldTypeId = typeof FormFieldTypeId
+
+export interface FormField<in out A, in out I = A>
+extends Pipeable.Pipeable {
+    readonly [FormFieldTypeId]: FormFieldTypeId
+
+    readonly value: Subscribable.Subscribable<Option.Option<A>, Cause.NoSuchElementException>
+    readonly encodedValue: SubscriptionRef.SubscriptionRef<I>
+    readonly issues: Subscribable.Subscribable<readonly ParseResult.ArrayFormatterIssue[]>
+    readonly isValidating: Subscribable.Subscribable<boolean>
+    readonly isSubmitting: Subscribable.Subscribable<boolean>
+}
+
+class FormFieldImpl<in out A, in out I = A>
+extends Pipeable.Class() implements FormField<A, I> {
+    readonly [FormFieldTypeId]: FormFieldTypeId = FormFieldTypeId
+
+    constructor(
+        readonly value: Subscribable.Subscribable<Option.Option<A>, Cause.NoSuchElementException>,
+        readonly encodedValue: SubscriptionRef.SubscriptionRef<I>,
+        readonly issues: Subscribable.Subscribable<readonly ParseResult.ArrayFormatterIssue[]>,
+        readonly isValidating: Subscribable.Subscribable<boolean>,
+        readonly isSubmitting: Subscribable.Subscribable<boolean>,
+    ) {
+        super()
+    }
+}
+
+const FormFieldKeyTypeId: unique symbol = Symbol.for("@effect-fc/Form/FormFieldKey")
+type FormFieldKeyTypeId = typeof FormFieldKeyTypeId
+
+class FormFieldKey implements Equal.Equal {
+    readonly [FormFieldKeyTypeId]: FormFieldKeyTypeId = FormFieldKeyTypeId
+    constructor(readonly path: PropertyPath.PropertyPath) {}
+
+    [Equal.symbol](that: Equal.Equal) {
+        return isFormFieldKey(that) && PropertyPath.equivalence(this.path, that.path)
+    }
+    [Hash.symbol]() {
+        return Hash.array(this.path)
+    }
+}
+
+export const isFormField = (u: unknown): u is FormField<unknown, unknown> => Predicate.hasProperty(u, FormFieldTypeId)
+const isFormFieldKey = (u: unknown): u is FormFieldKey => Predicate.hasProperty(u, FormFieldKeyTypeId)
+
+export const makeFormField = <A, I, R, MA, ME, MR, MP, const P extends PropertyPath.Paths<NoInfer<I>>>(
+    self: Form<A, I, R, MA, ME, MR, MP>,
+    path: P,
+): FormField<PropertyPath.ValueFromPath<A, P>, PropertyPath.ValueFromPath<I, P>> => {
+    return new FormFieldImpl(
+        Subscribable.mapEffect(self.value, Option.match({
+            onSome: v => Option.map(PropertyPath.get(v, path), Option.some),
+            onNone: () => Option.some(Option.none()),
+        })),
+        SubscriptionSubRef.makeFromPath(self.encodedValue, path),
+        Subscribable.mapEffect(self.error, Option.match({
+            onSome: flow(
+                ParseResult.ArrayFormatter.formatError,
+                Effect.map(Array.filter(issue => PropertyPath.equivalence(issue.path, path))),
+            ),
+            onNone: () => Effect.succeed([]),
+        })),
+        Subscribable.map(self.validationFiber, Option.isSome),
+        Subscribable.map(self.mutation.result, result => Result.isRunning(result) || Result.hasRefreshingFlag(result)),
+    )
+}
+
+
+export namespace useInput {
+    export interface Options {
+        readonly debounce?: Duration.DurationInput
+    }
+
+    export interface Success<T> {
+        readonly value: T
+        readonly setValue: React.Dispatch<React.SetStateAction<T>>
+    }
+}
+
+export const useInput = Effect.fnUntraced(function* <A, I>(
+    field: FormField<A, I>,
+    options?: useInput.Options,
+): Effect.fn.Return<useInput.Success<I>, Cause.NoSuchElementException, Scope.Scope> {
+    const internalValueRef = yield* Component.useOnChange(() => Effect.tap(
+        Effect.andThen(field.encodedValue, SubscriptionRef.make),
+        internalValueRef => Effect.forkScoped(Effect.all([
+            Stream.runForEach(
+                Stream.drop(field.encodedValue, 1),
+                upstreamEncodedValue => Effect.whenEffect(
+                    Ref.set(internalValueRef, upstreamEncodedValue),
+                    Effect.andThen(internalValueRef, internalValue => !Equal.equals(upstreamEncodedValue, internalValue)),
+                ),
+            ),
+
+            Stream.runForEach(
+                internalValueRef.changes.pipe(
+                    Stream.drop(1),
+                    Stream.changesWith(Equal.equivalence()),
+                    options?.debounce ? Stream.debounce(options.debounce) : identity,
+                ),
+                internalValue => Ref.set(field.encodedValue, internalValue),
+            ),
+        ], { concurrency: "unbounded" })),
+    ), [field, options?.debounce])
+
+    const [value, setValue] = yield* SubscriptionRef.useSubscriptionRefState(internalValueRef)
+    return { value, setValue }
+})
+
+export namespace useOptionalInput {
+    export interface Options<T> extends useInput.Options {
+        readonly defaultValue: T
+    }
+
+    export interface Success<T> extends useInput.Success<T> {
+        readonly enabled: boolean
+        readonly setEnabled: React.Dispatch<React.SetStateAction<boolean>>
+    }
+}
+
+export const useOptionalInput = Effect.fnUntraced(function* <A, I>(
+    field: FormField<A, Option.Option<I>>,
+    options: useOptionalInput.Options<I>,
+): Effect.fn.Return<useOptionalInput.Success<I>, Cause.NoSuchElementException, Scope.Scope> {
+    const [enabledRef, internalValueRef] = yield* Component.useOnChange(() => Effect.tap(
+        Effect.andThen(
+            field.encodedValue,
+            Option.match({
+                onSome: v => Effect.all([SubscriptionRef.make(true), SubscriptionRef.make(v)]),
+                onNone: () => Effect.all([SubscriptionRef.make(false), SubscriptionRef.make(options.defaultValue)]),
+            }),
+        ),
+
+        ([enabledRef, internalValueRef]) => Effect.forkScoped(Effect.all([
+            Stream.runForEach(
+                Stream.drop(field.encodedValue, 1),
+
+                upstreamEncodedValue => Effect.whenEffect(
+                    Option.match(upstreamEncodedValue, {
+                        onSome: v => Effect.andThen(
+                            Ref.set(enabledRef, true),
+                            Ref.set(internalValueRef, v),
+                        ),
+                        onNone: () => Effect.andThen(
+                            Ref.set(enabledRef, false),
+                            Ref.set(internalValueRef, options.defaultValue),
+                        ),
+                    }),
+
+                    Effect.andThen(
+                        Effect.all([enabledRef, internalValueRef]),
+                        ([enabled, internalValue]) => !Equal.equals(upstreamEncodedValue, enabled ? Option.some(internalValue) : Option.none()),
+                    ),
+                ),
+            ),
+
+            Stream.runForEach(
+                enabledRef.changes.pipe(
+                    Stream.zipLatest(internalValueRef.changes),
+                    Stream.drop(1),
+                    Stream.changesWith(Equal.equivalence()),
+                    options?.debounce ? Stream.debounce(options.debounce) : identity,
+                ),
+                ([enabled, internalValue]) => Ref.set(field.encodedValue, enabled ? Option.some(internalValue) : Option.none()),
+            ),
+        ], { concurrency: "unbounded" })),
+    ), [field, options.debounce])
+
+    const [enabled, setEnabled] = yield* SubscriptionRef.useSubscriptionRefState(enabledRef)
+    const [value, setValue] = yield* SubscriptionRef.useSubscriptionRefState(internalValueRef)
+    return { enabled, setEnabled, value, setValue }
+})

packages/effect-fc/src/Hook.ts

@@ -1,302 +0,0 @@
-import { type Context, Effect, Equivalence, ExecutionStrategy, Exit, type Layer, Option, pipe, PubSub, Ref, Runtime, Scope, Stream, SubscriptionRef } from "effect"
-import * as React from "react"
-import { SetStateAction } from "./types/index.js"
-
-
-export interface ScopeOptions {
-    readonly finalizerExecutionMode?: "sync" | "fork"
-    readonly finalizerExecutionStrategy?: ExecutionStrategy.ExecutionStrategy
-}
-
-
-export const useScope: {
-    (
-        deps: React.DependencyList,
-        options?: ScopeOptions,
-    ): Effect.Effect<Scope.Scope>
-} = Effect.fn("useScope")(function*(deps, options) {
-    const runtime = yield* Effect.runtime()
-
-    const [isInitialRun, initialScope] = React.useMemo(() => Runtime.runSync(runtime)(Effect.all([
-        Ref.make(true),
-        Scope.make(options?.finalizerExecutionStrategy ?? ExecutionStrategy.sequential),
-    ])), [])
-    const [scope, setScope] = React.useState(initialScope)
-
-    React.useEffect(() => Runtime.runSync(runtime)(
-        Effect.if(isInitialRun, {
-            onTrue: () => Effect.as(
-                Ref.set(isInitialRun, false),
-                () => closeScope(scope, runtime, options),
-            ),
-
-            onFalse: () => Scope.make(options?.finalizerExecutionStrategy ?? ExecutionStrategy.sequential).pipe(
-                Effect.tap(scope => Effect.sync(() => setScope(scope))),
-                Effect.map(scope => () => closeScope(scope, runtime, options)),
-            ),
-        })
-    ), deps)
-
-    return scope
-})
-
-const closeScope = (
-    scope: Scope.CloseableScope,
-    runtime: Runtime.Runtime<never>,
-    options?: ScopeOptions,
-) => {
-    switch (options?.finalizerExecutionMode ?? "sync") {
-        case "sync":
-            Runtime.runSync(runtime)(Scope.close(scope, Exit.void))
-            break
-        case "fork":
-            Runtime.runFork(runtime)(Scope.close(scope, Exit.void))
-            break
-    }
-}
-
-
-export const useCallbackSync: {
-    <Args extends unknown[], A, E, R>(
-        callback: (...args: Args) => Effect.Effect<A, E, R>,
-        deps: React.DependencyList,
-    ): Effect.Effect<(...args: Args) => A, never, R>
-} = Effect.fn("useCallbackSync")(function* <Args extends unknown[], A, E, R>(
-    callback: (...args: Args) => Effect.Effect<A, E, R>,
-    deps: React.DependencyList,
-) {
-    const runtime = yield* Effect.runtime<R>()
-    return React.useCallback((...args: Args) => Runtime.runSync(runtime)(callback(...args)), deps)
-})
-
-export const useCallbackPromise: {
-    <Args extends unknown[], A, E, R>(
-        callback: (...args: Args) => Effect.Effect<A, E, R>,
-        deps: React.DependencyList,
-    ): Effect.Effect<(...args: Args) => Promise<A>, never, R>
-} = Effect.fn("useCallbackPromise")(function* <Args extends unknown[], A, E, R>(
-    callback: (...args: Args) => Effect.Effect<A, E, R>,
-    deps: React.DependencyList,
-) {
-    const runtime = yield* Effect.runtime<R>()
-    return React.useCallback((...args: Args) => Runtime.runPromise(runtime)(callback(...args)), deps)
-})
-
-
-export const useMemo: {
-    <A, E, R>(
-        factory: () => Effect.Effect<A, E, R>,
-        deps: React.DependencyList,
-    ): Effect.Effect<A, E, R>
-} = Effect.fn("useMemo")(function* <A, E, R>(
-    factory: () => Effect.Effect<A, E, R>,
-    deps: React.DependencyList,
-) {
-    const runtime = yield* Effect.runtime()
-    return yield* React.useMemo(() => Runtime.runSync(runtime)(Effect.cached(factory())), deps)
-})
-
-export const useOnce: {
-    <A, E, R>(factory: () => Effect.Effect<A, E, R>): Effect.Effect<A, E, R>
-} = Effect.fn("useOnce")(function* <A, E, R>(
-    factory: () => Effect.Effect<A, E, R>
-) {
-    return yield* useMemo(factory, [])
-})
-
-
-export const useEffect: {
-    <E, R>(
-        effect: () => Effect.Effect<void, E, R>,
-        deps?: React.DependencyList,
-        options?: ScopeOptions,
-    ): Effect.Effect<void, never, Exclude<R, Scope.Scope>>
-} = Effect.fn("useEffect")(function* <E, R>(
-    effect: () => Effect.Effect<void, E, R>,
-    deps?: React.DependencyList,
-    options?: ScopeOptions,
-) {
-    const runtime = yield* Effect.runtime<Exclude<R, Scope.Scope>>()
-
-    React.useEffect(() => Effect.Do.pipe(
-        Effect.bind("scope", () => Scope.make(options?.finalizerExecutionStrategy ?? ExecutionStrategy.sequential)),
-        Effect.bind("exit", ({ scope }) => Effect.exit(Effect.provideService(effect(), Scope.Scope, scope))),
-        Effect.map(({ scope }) =>
-            () => closeScope(scope, runtime, options)
-        ),
-        Runtime.runSync(runtime),
-    ), deps)
-})
-
-export const useLayoutEffect: {
-    <E, R>(
-        effect: () => Effect.Effect<void, E, R>,
-        deps?: React.DependencyList,
-        options?: ScopeOptions,
-    ): Effect.Effect<void, never, Exclude<R, Scope.Scope>>
-} = Effect.fn("useLayoutEffect")(function* <E, R>(
-    effect: () => Effect.Effect<void, E, R>,
-    deps?: React.DependencyList,
-    options?: ScopeOptions,
-) {
-    const runtime = yield* Effect.runtime<Exclude<R, Scope.Scope>>()
-
-    React.useLayoutEffect(() => Effect.Do.pipe(
-        Effect.bind("scope", () => Scope.make(options?.finalizerExecutionStrategy ?? ExecutionStrategy.sequential)),
-        Effect.bind("exit", ({ scope }) => Effect.exit(Effect.provideService(effect(), Scope.Scope, scope))),
-        Effect.map(({ scope }) =>
-            () => closeScope(scope, runtime, options)
-        ),
-        Runtime.runSync(runtime),
-    ), deps)
-})
-
-export const useFork: {
-    <E, R>(
-        effect: () => Effect.Effect<void, E, R>,
-        deps?: React.DependencyList,
-        options?: Runtime.RunForkOptions & ScopeOptions,
-    ): Effect.Effect<void, never, Exclude<R, Scope.Scope>>
-} = Effect.fn("useFork")(function* <E, R>(
-    effect: () => Effect.Effect<void, E, R>,
-    deps?: React.DependencyList,
-    options?: Runtime.RunForkOptions & ScopeOptions,
-) {
-    const runtime = yield* Effect.runtime<Exclude<R, Scope.Scope>>()
-
-    React.useEffect(() => {
-        const scope = Runtime.runSync(runtime)(options?.scope
-            ? Scope.fork(options.scope, options?.finalizerExecutionStrategy ?? ExecutionStrategy.sequential)
-            : Scope.make(options?.finalizerExecutionStrategy ?? ExecutionStrategy.sequential)
-        )
-        Runtime.runFork(runtime)(Effect.provideService(effect(), Scope.Scope, scope), { ...options, scope })
-        return () => closeScope(scope, runtime, {
-            ...options,
-            finalizerExecutionMode: options?.finalizerExecutionMode ?? "fork",
-        })
-    }, deps)
-})
-
-
-export const useContext: {
-    <ROut, E, RIn>(
-        layer: Layer.Layer<ROut, E, RIn>,
-        options?: ScopeOptions,
-    ): Effect.Effect<Context.Context<ROut>, E, Exclude<RIn, Scope.Scope>>
-} = Effect.fn("useContext")(function* <ROut, E, RIn>(
-    layer: Layer.Layer<ROut, E, RIn>,
-    options?: ScopeOptions,
-) {
-    const scope = yield* useScope([layer], options)
-
-    return yield* useMemo(() => Effect.provideService(
-        Effect.provide(Effect.context<ROut>(), layer),
-        Scope.Scope,
-        scope,
-    ), [scope])
-})
-
-
-export const useRefFromReactiveValue: {
-    <A>(value: A): Effect.Effect<SubscriptionRef.SubscriptionRef<A>>
-} = Effect.fn("useRefFromReactiveValue")(function*(value) {
-    const ref = yield* useOnce(() => SubscriptionRef.make(value))
-    yield* useEffect(() => Ref.set(ref, value), [value])
-    return ref
-})
-
-export const useSubscribeRefs: {
-    <const Refs extends readonly SubscriptionRef.SubscriptionRef<any>[]>(
-        ...refs: Refs
-    ): Effect.Effect<{ [K in keyof Refs]: Effect.Effect.Success<Refs[K]> }>
-} = Effect.fn("useSubscribeRefs")(function* <const Refs extends readonly SubscriptionRef.SubscriptionRef<any>[]>(
-    ...refs: Refs
-) {
-    const [reactStateValue, setReactStateValue] = React.useState(yield* useOnce(() =>
-        Effect.all(refs as readonly SubscriptionRef.SubscriptionRef<any>[])
-    ))
-
-    yield* useFork(() => pipe(
-        refs.map(ref => Stream.changesWith(ref.changes, Equivalence.strict())),
-        streams => Stream.zipLatestAll(...streams),
-        Stream.runForEach(v =>
-            Effect.sync(() => setReactStateValue(v))
-        ),
-    ), refs)
-
-    return reactStateValue as any
-})
-
-export const useRefState: {
-    <A>(
-        ref: SubscriptionRef.SubscriptionRef<A>
-    ): Effect.Effect<readonly [A, React.Dispatch<React.SetStateAction<A>>]>
-} = Effect.fn("useRefState")(function* <A>(ref: SubscriptionRef.SubscriptionRef<A>) {
-    const [reactStateValue, setReactStateValue] = React.useState(yield* useOnce(() => ref))
-
-    yield* useFork(() => Stream.runForEach(
-        Stream.changesWith(ref.changes, Equivalence.strict()),
-        v => Effect.sync(() => setReactStateValue(v)),
-    ), [ref])
-
-    const setValue = yield* useCallbackSync((setStateAction: React.SetStateAction<A>) =>
-        Ref.update(ref, prevState =>
-            SetStateAction.value(setStateAction, prevState)
-        ),
-    [ref])
-
-    return [reactStateValue, setValue]
-})
-
-
-export const useStreamFromReactiveValues: {
-    <const A extends React.DependencyList>(
-        values: A
-    ): Effect.Effect<Stream.Stream<A>, never, Scope.Scope>
-} = Effect.fn("useStreamFromReactiveValues")(function* <const A extends React.DependencyList>(values: A) {
-    const { latest, pubsub, stream } = yield* useOnce(() => Effect.Do.pipe(
-        Effect.bind("latest", () => Ref.make(values)),
-        Effect.bind("pubsub", () => Effect.acquireRelease(PubSub.unbounded<A>(), PubSub.shutdown)),
-        Effect.let("stream", ({ latest, pubsub }) => latest.pipe(
-            Effect.flatMap(a => Effect.map(
-                Stream.fromPubSub(pubsub, { scoped: true }),
-                s => Stream.concat(Stream.make(a), s),
-            )),
-            Stream.unwrapScoped,
-        )),
-    ))
-
-    yield* useEffect(() => Ref.set(latest, values).pipe(
-        Effect.andThen(PubSub.publish(pubsub, values)),
-        Effect.unlessEffect(PubSub.isShutdown(pubsub)),
-    ), values)
-
-    return stream
-})
-
-export const useSubscribeStream: {
-    <A, E, R>(
-        stream: Stream.Stream<A, E, R>
-    ): Effect.Effect<Option.Option<A>, never, R>
-    <A extends NonNullable<unknown>, E, R>(
-        stream: Stream.Stream<A, E, R>,
-        initialValue: A,
-    ): Effect.Effect<Option.Some<A>, never, R>
-} = Effect.fn("useSubscribeStream")(function* <A extends NonNullable<unknown>, E, R>(
-    stream: Stream.Stream<A, E, R>,
-    initialValue?: A,
-) {
-    const [reactStateValue, setReactStateValue] = React.useState(
-        React.useMemo(() => initialValue
-            ? Option.some(initialValue)
-            : Option.none(),
-        [])
-    )
-
-    yield* useFork(() => Stream.runForEach(
-        Stream.changesWith(stream, Equivalence.strict()),
-        v => Effect.sync(() => setReactStateValue(Option.some(v))),
-    ), [stream])
-
-    return reactStateValue as Option.Some<A>
-})

packages/effect-fc/src/Memoized.ts

@@ -1,46 +1,56 @@
+/** biome-ignore-all lint/complexity/useArrowFunction: necessary for class prototypes */
 import { type Equivalence, Function, Predicate } from "effect"
+import * as React from "react"
 import type * as Component from "./Component.js"
 
 
-export const TypeId: unique symbol = Symbol.for("effect-fc/Memoized")
+export const TypeId: unique symbol = Symbol.for("@effect-fc/Memoized/Memoized")
 export type TypeId = typeof TypeId
 
-export interface Memoized<P> extends Memoized.Options<P> {
+export interface Memoized<P> extends MemoizedOptions<P> {
     readonly [TypeId]: TypeId
 }
 
-export namespace Memoized {
+export interface MemoizedOptions<P> {
-    export interface Options<P> {
+    readonly propsEquivalence?: Equivalence.Equivalence<P>
-        readonly propsAreEqual?: Equivalence.Equivalence<P>
-    }
 }
 
 
-const MemoizedProto = Object.freeze({
+export const MemoizedPrototype = Object.freeze({
-    [TypeId]: TypeId
+    [TypeId]: TypeId,
+
+    transformFunctionComponent<P extends {}>(
+        this: Memoized<P>,
+        f: React.FC<P>,
+    ) {
+        return React.memo(f, this.propsEquivalence)
+    },
 } as const)
 
 
 export const isMemoized = (u: unknown): u is Memoized<unknown> => Predicate.hasProperty(u, TypeId)
 
-export const memo = <T extends Component.Component<any, any, any>>(
+export const memoized = <T extends Component.Component<any, any, any, any>>(
     self: T
 ): T & Memoized<Component.Component.Props<T>> => Object.setPrototypeOf(
-    Object.assign(function() {}, self, MemoizedProto),
+    Object.assign(function() {}, self),
-    Object.getPrototypeOf(self),
+    Object.freeze(Object.setPrototypeOf(
+        Object.assign({}, MemoizedPrototype),
+        Object.getPrototypeOf(self),
+    )),
 )
 
 export const withOptions: {
-    <T extends Component.Component<any, any, any> & Memoized<any>>(
+    <T extends Component.Component<any, any, any, any> & Memoized<any>>(
-        options: Partial<Memoized.Options<Component.Component.Props<T>>>
+        options: Partial<MemoizedOptions<Component.Component.Props<T>>>
     ): (self: T) => T
-    <T extends Component.Component<any, any, any> & Memoized<any>>(
+    <T extends Component.Component<any, any, any, any> & Memoized<any>>(
         self: T,
-        options: Partial<Memoized.Options<Component.Component.Props<T>>>,
+        options: Partial<MemoizedOptions<Component.Component.Props<T>>>,
     ): T
-} = Function.dual(2, <T extends Component.Component<any, any, any> & Memoized<any>>(
+} = Function.dual(2, <T extends Component.Component<any, any, any, any> & Memoized<any>>(
     self: T,
-    options: Partial<Memoized.Options<Component.Component.Props<T>>>,
+    options: Partial<MemoizedOptions<Component.Component.Props<T>>>,
 ): T => Object.setPrototypeOf(
     Object.assign(function() {}, self, options),
     Object.getPrototypeOf(self),

packages/effect-fc/src/Mutation.ts

@@ -0,0 +1,128 @@
+import { type Context, Effect, Equal, type Fiber, Option, Pipeable, Predicate, type Scope, Stream, type Subscribable, SubscriptionRef } from "effect"
+import * as Result from "./Result.js"
+
+
+export const MutationTypeId: unique symbol = Symbol.for("@effect-fc/Mutation/Mutation")
+export type MutationTypeId = typeof MutationTypeId
+
+export interface Mutation<in out K extends Mutation.AnyKey, in out A, in out E = never, in out R = never, in out P = never>
+extends Pipeable.Pipeable {
+    readonly [MutationTypeId]: MutationTypeId
+
+    readonly context: Context.Context<Scope.Scope | R>
+    readonly f: (key: K) => Effect.Effect<A, E, R>
+    readonly initialProgress: P
+
+    readonly latestKey: Subscribable.Subscribable<Option.Option<K>>
+    readonly fiber: Subscribable.Subscribable<Option.Option<Fiber.Fiber<A, E>>>
+    readonly result: Subscribable.Subscribable<Result.Result<A, E, P>>
+    readonly latestFinalResult: Subscribable.Subscribable<Option.Option<Result.Final<A, E, P>>>
+
+    mutate(key: K): Effect.Effect<Result.Final<A, E, P>>
+    mutateSubscribable(key: K): Effect.Effect<Subscribable.Subscribable<Result.Result<A, E, P>>>
+}
+
+export declare namespace Mutation {
+    export type AnyKey = readonly any[]
+}
+
+export class MutationImpl<in out K extends Mutation.AnyKey, in out A, in out E = never, in out R = never, in out P = never>
+extends Pipeable.Class() implements Mutation<K, A, E, R, P> {
+    readonly [MutationTypeId]: MutationTypeId = MutationTypeId
+
+    constructor(
+        readonly context: Context.Context<Scope.Scope | R>,
+        readonly f: (key: K) => Effect.Effect<A, E, R>,
+        readonly initialProgress: P,
+
+        readonly latestKey: SubscriptionRef.SubscriptionRef<Option.Option<K>>,
+        readonly fiber: SubscriptionRef.SubscriptionRef<Option.Option<Fiber.Fiber<A, E>>>,
+        readonly result: SubscriptionRef.SubscriptionRef<Result.Result<A, E, P>>,
+        readonly latestFinalResult: SubscriptionRef.SubscriptionRef<Option.Option<Result.Final<A, E, P>>>,
+    ) {
+        super()
+    }
+
+    mutate(key: K): Effect.Effect<Result.Final<A, E, P>> {
+        return SubscriptionRef.set(this.latestKey, Option.some(key)).pipe(
+            Effect.andThen(this.start(key)),
+            Effect.andThen(sub => this.watch(sub)),
+            Effect.provide(this.context),
+        )
+    }
+    mutateSubscribable(key: K): Effect.Effect<Subscribable.Subscribable<Result.Result<A, E, P>>> {
+        return SubscriptionRef.set(this.latestKey, Option.some(key)).pipe(
+            Effect.andThen(this.start(key)),
+            Effect.tap(sub => Effect.forkScoped(this.watch(sub))),
+            Effect.provide(this.context),
+        )
+    }
+
+    start(key: K): Effect.Effect<
+        Subscribable.Subscribable<Result.Result<A, E, P>>,
+        never,
+        Scope.Scope | R
+    > {
+        return this.latestFinalResult.pipe(
+            Effect.andThen(initial => Result.unsafeForkEffect(
+                Effect.onExit(this.f(key), () => Effect.andThen(
+                    Effect.all([Effect.fiberId, this.fiber]),
+                    ([currentFiberId, fiber]) => Option.match(fiber, {
+                        onSome: v => Equal.equals(currentFiberId, v.id())
+                            ? SubscriptionRef.set(this.fiber, Option.none())
+                            : Effect.void,
+                        onNone: () => Effect.void,
+                    }),
+                )),
+
+                {
+                    initial: Option.isSome(initial) ? Result.willFetch(initial.value) : Result.initial(),
+                    initialProgress: this.initialProgress,
+                } as Result.unsafeForkEffect.Options<A, E, P>,
+            )),
+            Effect.tap(([, fiber]) => SubscriptionRef.set(this.fiber, Option.some(fiber))),
+            Effect.map(([sub]) => sub),
+        )
+    }
+
+    watch(
+        sub: Subscribable.Subscribable<Result.Result<A, E, P>>
+    ): Effect.Effect<Result.Final<A, E, P>> {
+        return sub.get.pipe(
+            Effect.andThen(initial => Stream.runFoldEffect(
+                sub.changes,
+                initial,
+                (_, result) => Effect.as(SubscriptionRef.set(this.result, result), result),
+            ) as Effect.Effect<Result.Final<A, E, P>>),
+            Effect.tap(result => SubscriptionRef.set(this.latestFinalResult, Option.some(result))),
+        )
+    }
+}
+
+export const isMutation = (u: unknown): u is Mutation<readonly unknown[], unknown, unknown, unknown, unknown> => Predicate.hasProperty(u, MutationTypeId)
+
+export declare namespace make {
+    export interface Options<K extends Mutation.AnyKey = never, A = void, E = never, R = never, P = never> {
+        readonly f: (key: K) => Effect.Effect<A, E, Result.forkEffect.InputContext<R, NoInfer<P>>>
+        readonly initialProgress?: P
+    }
+}
+
+export const make = Effect.fnUntraced(function* <const K extends Mutation.AnyKey = never, A = void, E = never, R = never, P = never>(
+    options: make.Options<K, A, E, R, P>
+): Effect.fn.Return<
+    Mutation<K, A, E, Result.forkEffect.OutputContext<A, E, R, P>, P>,
+    never,
+    Scope.Scope | Result.forkEffect.OutputContext<A, E, R, P>
+> {
+    return new MutationImpl(
+        yield* Effect.context<Scope.Scope | Result.forkEffect.OutputContext<A, E, R, P>>(),
+        options.f as any,
+        options.initialProgress as P,
+
+        yield* SubscriptionRef.make(Option.none<K>()),
+        yield* SubscriptionRef.make(Option.none<Fiber.Fiber<A, E>>()),
+        yield* SubscriptionRef.make(Result.initial<A, E, P>()),
+        yield* SubscriptionRef.make(Option.none<Result.Final<A, E, P>>()),
+    )
+})

packages/effect-fc/src/PropertyPath.ts

@@ -1,34 +1,34 @@
-import { Array, Function, Option, Predicate } from "effect"
+import { Array, Equivalence, Function, Option, Predicate } from "effect"
 
 
+export type PropertyPath = readonly PropertyKey[]
+
 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> = [] | (
+export type Paths<T, D extends number = 5, Seen = never> = readonly [] | (
-    D extends never ? [] :
+    D extends never ? readonly [] :
-    T extends Seen ? [] :
+    T extends Seen ? readonly [] :
-    T extends readonly any[] ? ArrayPaths<T, D, Seen | T> :
+    T extends readonly any[] ? {
-    T extends object ? ObjectPaths<T, D, Seen | T> :
+        [K in keyof T as K extends number ? K : never]:
+            | readonly [K]
+            | readonly [K, ...Paths<T[K], Prev[D], Seen | T>]
+    } extends infer O
+        ? O[keyof O]
+        : never
+    :
+    T extends object ? {
+        [K in keyof T as K extends string | number | symbol ? K : never]-?:
+            NonNullable<T[K]> extends infer V
+                ? readonly [K] | readonly [K, ...Paths<V, Prev[D], Seen>]
+                : never
+    } extends infer O
+        ? O[keyof O]
+        : never
+    :
     never
 )
 
-export type ArrayPaths<T extends readonly any[], D extends number, Seen> = {
+export type ValueFromPath<T, P extends readonly any[]> = P extends readonly [infer Head, ...infer Tail]
-    [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[]
@@ -38,9 +38,8 @@ export type ValueFromPath<T, P extends any[]> = P extends [infer Head, ...infer
             : never
     : T
 
-export type AnyKey = string | number | symbol
-export type AnyPath = readonly AnyKey[]
 
+export const equivalence: Equivalence.Equivalence<PropertyPath> = Equivalence.array(Equivalence.strict())
 
 export const unsafeGet: {
     <T, const P extends Paths<T>>(path: P): (self: T) => ValueFromPath<T, P>
@@ -65,16 +64,16 @@ export const get: {
 )
 
 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>>(path: P, value: ValueFromPath<T, P>): (self: T) => Option.Option<T>
     <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)
+    const key = Array.head(path as PropertyPath)
     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)
+    const child = immutableSet<any, any>(self[key.value], Option.getOrThrow(Array.tail(path as PropertyPath)), value)
     if (Option.isNone(child))
         return child
 

packages/effect-fc/src/PubSub.ts

@@ -0,0 +1,14 @@
+import { Effect, PubSub, type Scope } from "effect"
+import type * as React from "react"
+import * as Component from "./Component.js"
+
+
+export const usePubSubFromReactiveValues = Effect.fnUntraced(function* <const A extends React.DependencyList>(
+    values: A
+): Effect.fn.Return<PubSub.PubSub<A>, never, Scope.Scope> {
+    const pubsub = yield* Component.useOnMount(() => Effect.acquireRelease(PubSub.unbounded<A>(), PubSub.shutdown))
+    yield* Component.useReactEffect(() => Effect.unlessEffect(PubSub.publish(pubsub, values), PubSub.isShutdown(pubsub)), values)
+    return pubsub
+})
+
+export * from "effect/PubSub"

packages/effect-fc/src/Query.ts

@@ -0,0 +1,330 @@
+import { type Cause, type Context, type Duration, Effect, Equal, Fiber, identity, Option, Pipeable, Predicate, type Scope, Stream, Subscribable, SubscriptionRef } from "effect"
+import * as QueryClient from "./QueryClient.js"
+import * as Result from "./Result.js"
+
+
+export const QueryTypeId: unique symbol = Symbol.for("@effect-fc/Query/Query")
+export type QueryTypeId = typeof QueryTypeId
+
+export interface Query<in out K extends Query.AnyKey, in out A, in out KE = never, in out KR = never, in out E = never, in out R = never>
+extends Pipeable.Pipeable {
+    readonly [QueryTypeId]: QueryTypeId
+
+    readonly context: Context.Context<Scope.Scope | QueryClient.QueryClient | R>
+    readonly key: Stream.Stream<K, KE, KR>
+    readonly f: (key: K) => Effect.Effect<A, E, R>
+
+    readonly staleTime: Duration.DurationInput
+    readonly refreshOnWindowFocus: boolean
+
+    readonly latestKey: Subscribable.Subscribable<Option.Option<K>>
+    readonly fiber: Subscribable.Subscribable<Option.Option<Fiber.Fiber<A, E>>>
+    readonly result: Subscribable.Subscribable<Result.Result<A, E>>
+    readonly latestFinalResult: Subscribable.Subscribable<Option.Option<Result.Success<A, E> | Result.Failure<A, E>>>
+
+    readonly run: Effect.Effect<void>
+    fetch(key: K): Effect.Effect<Result.Success<A, E> | Result.Failure<A, E>>
+    fetchSubscribable(key: K): Effect.Effect<Subscribable.Subscribable<Result.Result<A, E>>>
+    readonly refresh: Effect.Effect<Result.Success<A, E> | Result.Failure<A, E>, Cause.NoSuchElementException>
+    readonly refreshSubscribable: Effect.Effect<Subscribable.Subscribable<Result.Result<A, E>>, Cause.NoSuchElementException>
+
+    readonly invalidateCache: Effect.Effect<void>
+    invalidateCacheEntry(key: K): Effect.Effect<void>
+}
+
+export declare namespace Query {
+    export type AnyKey = readonly any[]
+}
+
+export class QueryImpl<in out K extends Query.AnyKey, in out A, in out KE = never, in out KR = never, in out E = never, in out R = never>
+extends Pipeable.Class() implements Query<K, A, KE, KR, E, R> {
+    readonly [QueryTypeId]: QueryTypeId = QueryTypeId
+
+    constructor(
+        readonly context: Context.Context<Scope.Scope | QueryClient.QueryClient | KR | R>,
+        readonly key: Stream.Stream<K, KE, KR>,
+        readonly f: (key: K) => Effect.Effect<A, E, R>,
+
+        readonly staleTime: Duration.DurationInput,
+        readonly refreshOnWindowFocus: boolean,
+
+        readonly latestKey: SubscriptionRef.SubscriptionRef<Option.Option<K>>,
+        readonly fiber: SubscriptionRef.SubscriptionRef<Option.Option<Fiber.Fiber<A, E>>>,
+        readonly result: SubscriptionRef.SubscriptionRef<Result.Success<A, E> | Result.Failure<A, E>>,
+        readonly latestFinalResult: SubscriptionRef.SubscriptionRef<Option.Option<Result.Success<A, E> | Result.Failure<A, E>>>,
+
+        readonly runSemaphore: Effect.Semaphore,
+    ) {
+        super()
+    }
+
+    get run(): Effect.Effect<void> {
+        return Effect.all([
+            Stream.runForEach(this.key, key => this.fetchSubscribable(key)),
+
+            Effect.promise(() => import("@effect/platform-browser")).pipe(
+                Effect.andThen(({ BrowserStream }) => this.refreshOnWindowFocus
+                    ? Stream.runForEach(
+                        BrowserStream.fromEventListenerWindow("focus"),
+                        () => this.refreshSubscribable,
+                    )
+                    : Effect.void
+                ),
+                Effect.catchAllDefect(() => Effect.void),
+            ),
+        ], { concurrency: "unbounded" }).pipe(
+            Effect.ignore,
+            this.runSemaphore.withPermits(1),
+            Effect.provide(this.context),
+        )
+    }
+
+    get interrupt(): Effect.Effect<void> {
+        return Effect.andThen(this.fiber, Option.match({
+            onSome: Fiber.interrupt,
+            onNone: () => Effect.void,
+        }))
+    }
+
+    fetch(key: K): Effect.Effect<Result.Success<A, E> | Result.Failure<A, E>> {
+        return this.interrupt.pipe(
+            Effect.andThen(SubscriptionRef.set(this.latestKey, Option.some(key))),
+            Effect.andThen(this.latestFinalResult),
+            Effect.andThen(previous => this.startCached(key, Option.isSome(previous)
+                ? Result.willFetch(previous.value) as Result.Final<A, E, P>
+                : Result.initial()
+            )),
+            Effect.andThen(sub => this.watch(key, sub)),
+            Effect.provide(this.context),
+        )
+    }
+
+    fetchSubscribable(key: K): Effect.Effect<Subscribable.Subscribable<Result.Result<A, E, P>>> {
+        return this.interrupt.pipe(
+            Effect.andThen(SubscriptionRef.set(this.latestKey, Option.some(key))),
+            Effect.andThen(this.latestFinalResult),
+            Effect.andThen(previous => this.startCached(key, Option.isSome(previous)
+                ? Result.willFetch(previous.value) as Result.Final<A, E, P>
+                : Result.initial()
+            )),
+            Effect.tap(sub => Effect.forkScoped(this.watch(key, sub))),
+            Effect.provide(this.context),
+        )
+    }
+
+    get refresh(): Effect.Effect<Result.Final<A, E, P>, Cause.NoSuchElementException> {
+        return this.interrupt.pipe(
+            Effect.andThen(Effect.Do),
+            Effect.bind("latestKey", () => Effect.andThen(this.latestKey, identity)),
+            Effect.bind("latestFinalResult", () => this.latestFinalResult),
+            Effect.bind("subscribable", ({ latestKey, latestFinalResult }) =>
+                this.startCached(latestKey, Option.isSome(latestFinalResult)
+                    ? Result.willRefresh(latestFinalResult.value) as Result.Final<A, E, P>
+                    : Result.initial()
+                )
+            ),
+            Effect.andThen(({ latestKey, subscribable }) => this.watch(latestKey, subscribable)),
+            Effect.provide(this.context),
+        )
+    }
+
+    get refreshSubscribable(): Effect.Effect<
+        Subscribable.Subscribable<Result.Result<A, E, P>>,
+        Cause.NoSuchElementException
+    > {
+        return this.interrupt.pipe(
+            Effect.andThen(Effect.Do),
+            Effect.bind("latestKey", () => Effect.andThen(this.latestKey, identity)),
+            Effect.bind("latestFinalResult", () => this.latestFinalResult),
+            Effect.bind("subscribable", ({ latestKey, latestFinalResult }) =>
+                this.startCached(latestKey, Option.isSome(latestFinalResult)
+                    ? Result.willRefresh(latestFinalResult.value) as Result.Final<A, E, P>
+                    : Result.initial()
+                )
+            ),
+            Effect.tap(({ latestKey, subscribable }) => Effect.forkScoped(this.watch(latestKey, subscribable))),
+            Effect.map(({ subscribable }) => subscribable),
+            Effect.provide(this.context),
+        )
+    }
+
+    startCached(
+        key: K,
+        previous: Result.Success<A, E> | Result.Failure<A, E>,
+    ): Effect.Effect<
+        Subscribable.Subscribable<Result.Result<A, E, P>>,
+        never,
+        Scope.Scope | QueryClient.QueryClient | R
+    > {
+        return Effect.andThen(this.getCacheEntry(key), Option.match({
+            onSome: entry => Effect.andThen(
+                QueryClient.isQueryClientCacheEntryStale(entry),
+                isStale => isStale
+                    ? this.start(key, Result.willRefresh(entry.result) as Result.Final<A, E, P>)
+                    : Effect.succeed(Subscribable.make({
+                        get: Effect.succeed(entry.result as Result.Result<A, E, P>),
+                        get changes() { return Stream.make(entry.result as Result.Result<A, E, P>) },
+                    })),
+            ),
+            onNone: () => this.start(key, initial),
+        }))
+    }
+
+    start(
+        key: K,
+        previous: Result.Success<A, E> | Result.Failure<A, E>,
+    ): Effect.Effect<
+        Subscribable.Subscribable<Result.Result<A, E>>,
+        never,
+        Scope.Scope | R
+    > {
+        return Effect.Do.pipe(
+            Effect.bind("ref", () => SubscriptionRef.make<Result.Result<A, E>>(Result.initial())),
+
+        )
+
+        Effect.onExit(this.f(key), () => Effect.andThen(
+            Effect.all([Effect.fiberId, this.fiber]),
+            ([currentFiberId, fiber]) => Option.match(fiber, {
+                onSome: v => Equal.equals(currentFiberId, v.id())
+                    ? SubscriptionRef.set(this.fiber, Option.none())
+                    : Effect.void,
+                onNone: () => Effect.void,
+            }),
+        ))
+
+        // return Result.unsafeForkEffect(
+        //     Effect.onExit(this.f(key), () => Effect.andThen(
+        //         Effect.all([Effect.fiberId, this.fiber]),
+        //         ([currentFiberId, fiber]) => Option.match(fiber, {
+        //             onSome: v => Equal.equals(currentFiberId, v.id())
+        //                 ? SubscriptionRef.set(this.fiber, Option.none())
+        //                 : Effect.void,
+        //             onNone: () => Effect.void,
+        //         }),
+        //     )),
+
+        //     {
+        //         initial,
+        //         initialProgress: this.initialProgress,
+        //     } as Result.unsafeForkEffect.Options<A, E, P>,
+        // ).pipe(
+        //     Effect.tap(([, fiber]) => SubscriptionRef.set(this.fiber, Option.some(fiber))),
+        //     Effect.map(([sub]) => sub),
+        // )
+    }
+
+    watch(
+        key: K,
+        sub: Subscribable.Subscribable<Result.Result<A, E, P>>
+    ): Effect.Effect<Result.Final<A, E, P>, never, QueryClient.QueryClient> {
+        return sub.get.pipe(
+            Effect.andThen(initial => Stream.runFoldEffect(
+                sub.changes,
+                initial,
+                (_, result) => Effect.as(SubscriptionRef.set(this.result, result), result),
+            ) as Effect.Effect<Result.Final<A, E, P>>),
+            Effect.tap(result => SubscriptionRef.set(this.latestFinalResult, Option.some(result))),
+            Effect.tap(result => Result.isSuccess(result)
+                ? this.setCacheEntry(key, result)
+                : Effect.void
+            ),
+        )
+    }
+
+    makeCacheKey(key: K): QueryClient.QueryClientCacheKey {
+        return new QueryClient.QueryClientCacheKey(key, this.f as (key: Query.AnyKey) => Effect.Effect<unknown, unknown, unknown>)
+    }
+
+    getCacheEntry(
+        key: K
+    ): Effect.Effect<Option.Option<QueryClient.QueryClientCacheEntry>, never, QueryClient.QueryClient> {
+        return Effect.andThen(
+            Effect.all([
+                Effect.succeed(this.makeCacheKey(key)),
+                QueryClient.QueryClient,
+            ]),
+            ([key, client]) => client.getCacheEntry(key),
+        )
+    }
+
+    setCacheEntry(
+        key: K,
+        result: Result.Success<A>,
+    ): Effect.Effect<QueryClient.QueryClientCacheEntry, never, QueryClient.QueryClient> {
+        return Effect.andThen(
+            Effect.all([
+                Effect.succeed(this.makeCacheKey(key)),
+                QueryClient.QueryClient,
+            ]),
+            ([key, client]) => client.setCacheEntry(key, result, this.staleTime),
+        )
+    }
+
+    get invalidateCache(): Effect.Effect<void> {
+        return QueryClient.QueryClient.pipe(
+            Effect.andThen(client => client.invalidateCacheEntries(this.f as (key: Query.AnyKey) => Effect.Effect<unknown, unknown, unknown>)),
+            Effect.provide(this.context),
+        )
+    }
+
+    invalidateCacheEntry(key: K): Effect.Effect<void> {
+        return Effect.all([
+            Effect.succeed(this.makeCacheKey(key)),
+            QueryClient.QueryClient,
+        ]).pipe(
+            Effect.andThen(([key, client]) => client.invalidateCacheEntry(key)),
+            Effect.provide(this.context),
+        )
+    }
+}
+
+export const isQuery = (u: unknown): u is Query<readonly unknown[], unknown> => Predicate.hasProperty(u, QueryTypeId)
+
+export declare namespace make {
+    export interface Options<K extends Query.AnyKey, A, KE = never, KR = never, E = never, R = never, P = never> {
+        readonly key: Stream.Stream<K, KE, KR>
+        readonly f: (key: NoInfer<K>) => Effect.Effect<A, E, Result.forkEffect.InputContext<R, NoInfer<P>>>
+        readonly initialProgress?: P
+        readonly staleTime?: Duration.DurationInput
+        readonly refreshOnWindowFocus?: boolean
+    }
+}
+
+export const make = Effect.fnUntraced(function* <K extends Query.AnyKey, A, KE = never, KR = never, E = never, R = never, P = never>(
+    options: make.Options<K, A, KE, KR, E, R, P>
+): Effect.fn.Return<
+    Query<K, A, KE, KR, E, Result.forkEffect.OutputContext<A, E, R, P>, P>,
+    never,
+    Scope.Scope | QueryClient.QueryClient | KR | Result.forkEffect.OutputContext<A, E, R, P>
+> {
+    const client = yield* QueryClient.QueryClient
+
+    return new QueryImpl(
+        yield* Effect.context<Scope.Scope | QueryClient.QueryClient | KR | Result.forkEffect.OutputContext<A, E, R, P>>(),
+        options.key,
+        options.f as any,
+        options.initialProgress as P,
+
+        options.staleTime ?? client.defaultStaleTime,
+        options.refreshOnWindowFocus ?? client.defaultRefreshOnWindowFocus,
+
+        yield* SubscriptionRef.make(Option.none<K>()),
+        yield* SubscriptionRef.make(Option.none<Fiber.Fiber<A, E>>()),
+        yield* SubscriptionRef.make(Result.initial<A, E, P>()),
+        yield* SubscriptionRef.make(Option.none<Result.Final<A, E, P>>()),
+
+        yield* Effect.makeSemaphore(1),
+    )
+})
+
+export const service = <K extends Query.AnyKey, A, KE = never, KR = never, E = never, R = never, P = never>(
+    options: make.Options<K, A, KE, KR, E, R, P>
+): Effect.Effect<
+    Query<K, A, KE, KR, E, Result.forkEffect.OutputContext<A, E, R, P>, P>,
+    never,
+    Scope.Scope | QueryClient.QueryClient | KR | Result.forkEffect.OutputContext<A, E, R, P>
+> => Effect.tap(
+    make(options),
+    query => Effect.forkScoped(query.run),
+)

packages/effect-fc/src/QueryClient.ts

@@ -0,0 +1,173 @@
+import { DateTime, Duration, Effect, Equal, Equivalence, Hash, HashMap, type Option, Pipeable, Predicate, Schedule, type Scope, type Subscribable, SubscriptionRef } from "effect"
+import type * as Query from "./Query.js"
+import type * as Result from "./Result.js"
+
+
+export const QueryClientServiceTypeId: unique symbol = Symbol.for("@effect-fc/QueryClient/QueryClientService")
+export type QueryClientServiceTypeId = typeof QueryClientServiceTypeId
+
+export interface QueryClientService extends Pipeable.Pipeable {
+    readonly [QueryClientServiceTypeId]: QueryClientServiceTypeId
+
+    readonly cache: Subscribable.Subscribable<HashMap.HashMap<QueryClientCacheKey, QueryClientCacheEntry>>
+    readonly cacheGcTime: Duration.DurationInput
+    readonly defaultStaleTime: Duration.DurationInput
+    readonly defaultRefreshOnWindowFocus: boolean
+
+    readonly run: Effect.Effect<void>
+    getCacheEntry(key: QueryClientCacheKey): Effect.Effect<Option.Option<QueryClientCacheEntry>>
+    setCacheEntry(
+        key: QueryClientCacheKey,
+        result: Result.Success<unknown>,
+        staleTime: Duration.DurationInput,
+    ): Effect.Effect<QueryClientCacheEntry>
+    invalidateCacheEntries(f: (key: Query.Query.AnyKey) => Effect.Effect<unknown, unknown, unknown>): Effect.Effect<void>
+    invalidateCacheEntry(key: QueryClientCacheKey): Effect.Effect<void>
+}
+
+export class QueryClient extends Effect.Service<QueryClient>()("@effect-fc/QueryClient/QueryClient", {
+    scoped: Effect.suspend(() => service())
+}) {}
+
+export class QueryClientServiceImpl
+extends Pipeable.Class()
+implements QueryClientService {
+    readonly [QueryClientServiceTypeId]: QueryClientServiceTypeId = QueryClientServiceTypeId
+
+    constructor(
+        readonly cache: SubscriptionRef.SubscriptionRef<HashMap.HashMap<QueryClientCacheKey, QueryClientCacheEntry>>,
+        readonly cacheGcTime: Duration.DurationInput,
+        readonly defaultStaleTime: Duration.DurationInput,
+        readonly defaultRefreshOnWindowFocus: boolean,
+        readonly runSemaphore: Effect.Semaphore,
+    ) {
+        super()
+    }
+
+    get run(): Effect.Effect<void> {
+        return this.runSemaphore.withPermits(1)(Effect.repeat(
+            Effect.andThen(
+                DateTime.now,
+                now => SubscriptionRef.update(this.cache, HashMap.filter(entry =>
+                    Duration.lessThan(
+                        DateTime.distanceDuration(entry.lastAccessedAt, now),
+                        Duration.sum(entry.staleTime, this.cacheGcTime),
+                    )
+                )),
+            ),
+            Schedule.spaced("30 second"),
+        ))
+    }
+
+    getCacheEntry(key: QueryClientCacheKey): Effect.Effect<Option.Option<QueryClientCacheEntry>> {
+        return Effect.all([
+            Effect.andThen(this.cache, HashMap.get(key)),
+            DateTime.now,
+        ]).pipe(
+            Effect.map(([entry, now]) => new QueryClientCacheEntry(entry.result, entry.staleTime, entry.createdAt, now)),
+            Effect.tap(entry => SubscriptionRef.update(this.cache, HashMap.set(key, entry))),
+            Effect.option,
+        )
+    }
+
+    setCacheEntry(
+        key: QueryClientCacheKey,
+        result: Result.Success<unknown>,
+        staleTime: Duration.DurationInput,
+    ): Effect.Effect<QueryClientCacheEntry> {
+        return DateTime.now.pipe(
+            Effect.map(now => new QueryClientCacheEntry(result, staleTime, now, now)),
+            Effect.tap(entry => SubscriptionRef.update(this.cache, HashMap.set(key, entry))),
+        )
+    }
+
+    invalidateCacheEntries(f: (key: Query.Query.AnyKey) => Effect.Effect<unknown, unknown, unknown>): Effect.Effect<void> {
+        return SubscriptionRef.update(this.cache, HashMap.filter((_, key) => !Equivalence.strict()(key.f, f)))
+    }
+    invalidateCacheEntry(key: QueryClientCacheKey): Effect.Effect<void> {
+        return SubscriptionRef.update(this.cache, HashMap.remove(key))
+    }
+}
+
+export const isQueryClientService = (u: unknown): u is QueryClientService => Predicate.hasProperty(u, QueryClientServiceTypeId)
+
+export declare namespace make {
+    export interface Options {
+        readonly cacheGcTime?: Duration.DurationInput
+        readonly defaultStaleTime?: Duration.DurationInput
+        readonly defaultRefreshOnWindowFocus?: boolean
+    }
+}
+
+export const make = Effect.fnUntraced(function* (options: make.Options = {}): Effect.fn.Return<QueryClientService> {
+    return new QueryClientServiceImpl(
+        yield* SubscriptionRef.make(HashMap.empty<QueryClientCacheKey, QueryClientCacheEntry>()),
+        options.cacheGcTime ?? "5 minutes",
+        options.defaultStaleTime ?? "0 minutes",
+        options.defaultRefreshOnWindowFocus ?? true,
+        yield* Effect.makeSemaphore(1),
+    )
+})
+
+export declare namespace service {
+    export interface Options extends make.Options {}
+}
+
+export const service = (options?: service.Options): Effect.Effect<QueryClientService, never, Scope.Scope> => Effect.tap(
+    make(options),
+    client => Effect.forkScoped(client.run),
+)
+
+
+export const QueryClientCacheKeyTypeId: unique symbol = Symbol.for("@effect-fc/QueryClient/QueryClientCacheKey")
+export type QueryClientCacheKeyTypeId = typeof QueryClientCacheKeyTypeId
+
+export class QueryClientCacheKey
+extends Pipeable.Class()
+implements Pipeable.Pipeable, Equal.Equal {
+    readonly [QueryClientCacheKeyTypeId]: QueryClientCacheKeyTypeId = QueryClientCacheKeyTypeId
+
+    constructor(
+        readonly key: Query.Query.AnyKey,
+        readonly f: (key: Query.Query.AnyKey) => Effect.Effect<unknown, unknown, unknown>,
+    ) {
+        super()
+    }
+
+    [Equal.symbol](that: Equal.Equal) {
+        return isQueryClientCacheKey(that) && Equivalence.array(Equal.equivalence())(this.key, that.key) && Equivalence.strict()(this.f, that.f)
+    }
+    [Hash.symbol]() {
+        return Hash.combine(Hash.hash(this.f))(Hash.array(this.key))
+    }
+}
+
+export const isQueryClientCacheKey = (u: unknown): u is QueryClientCacheKey => Predicate.hasProperty(u, QueryClientCacheKeyTypeId)
+
+
+export const QueryClientCacheEntryTypeId: unique symbol = Symbol.for("@effect-fc/QueryClient/QueryClientCacheEntry")
+export type QueryClientCacheEntryTypeId = typeof QueryClientCacheEntryTypeId
+
+export class QueryClientCacheEntry
+extends Pipeable.Class()
+implements Pipeable.Pipeable {
+    readonly [QueryClientCacheEntryTypeId]: QueryClientCacheEntryTypeId = QueryClientCacheEntryTypeId
+
+    constructor(
+        readonly result: Result.Success<unknown>,
+        readonly staleTime: Duration.DurationInput,
+        readonly createdAt: DateTime.DateTime,
+        readonly lastAccessedAt: DateTime.DateTime,
+    ) {
+        super()
+    }
+}
+
+export const isQueryClientCacheEntry = (u: unknown): u is QueryClientCacheEntry => Predicate.hasProperty(u, QueryClientCacheEntryTypeId)
+
+export const isQueryClientCacheEntryStale = (
+    self: QueryClientCacheEntry
+): Effect.Effect<boolean> => Effect.andThen(
+    DateTime.now,
+    now => Duration.greaterThanOrEqualTo(DateTime.distanceDuration(self.createdAt, now), self.staleTime),
+)

packages/effect-fc/src/ReactManagedRuntime.ts

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

packages/effect-fc/src/ReactRuntime.ts

@@ -0,0 +1,85 @@
+/** biome-ignore-all lint/complexity/useArrowFunction: necessary for class prototypes */
+import { Effect, Layer, ManagedRuntime, Predicate, Runtime, Scope } from "effect"
+import * as React from "react"
+import * as Component from "./Component.js"
+import * as ErrorObserver from "./ErrorObserver.js"
+import * as QueryClient from "./QueryClient.js"
+
+
+export const TypeId: unique symbol = Symbol.for("@effect-fc/ReactRuntime/ReactRuntime")
+export type TypeId = typeof TypeId
+
+export interface ReactRuntime<R, ER> {
+    new(_: never): Record<string, never>
+    readonly [TypeId]: TypeId
+    readonly runtime: ManagedRuntime.ManagedRuntime<R, ER>
+    readonly context: React.Context<Runtime.Runtime<R>>
+}
+
+const ReactRuntimeProto = Object.freeze({ [TypeId]: TypeId } as const)
+
+export const Prelude: Layer.Layer<
+    | Component.ScopeMap
+    | ErrorObserver.ErrorObserver
+    | QueryClient.QueryClient
+> = Layer.mergeAll(
+    Component.ScopeMap.Default,
+    ErrorObserver.layer,
+    QueryClient.QueryClient.Default,
+)
+
+
+export const isReactRuntime = (u: unknown): u is ReactRuntime<unknown, unknown> => Predicate.hasProperty(u, TypeId)
+
+export const make = <R, ER>(
+    layer: Layer.Layer<R, ER>,
+    memoMap?: Layer.MemoMap,
+): ReactRuntime<Layer.Layer.Success<typeof Prelude> | R, ER> => Object.setPrototypeOf(
+    Object.assign(function() {}, {
+        runtime: ManagedRuntime.make(
+            Layer.merge(layer, Prelude),
+            memoMap,
+        ),
+        // biome-ignore lint/style/noNonNullAssertion: context initialization
+        context: React.createContext<Runtime.Runtime<R>>(null!),
+    }),
+    ReactRuntimeProto,
+)
+
+
+export namespace Provider {
+    export interface Props<R, ER> extends React.SuspenseProps {
+        readonly runtime: ReactRuntime<R, ER>
+        readonly children?: React.ReactNode
+    }
+}
+
+export const Provider = <R, ER>(
+    { runtime, children, ...suspenseProps }: Provider.Props<R, ER>
+): React.ReactNode => {
+    const promise = React.useMemo(() => Effect.runPromise(runtime.runtime.runtimeEffect), [runtime])
+
+    return React.createElement(
+        React.Suspense,
+        suspenseProps,
+        React.createElement(ProviderInner<R, ER>, { runtime, promise, children }),
+    )
+}
+
+const ProviderInner = <R, ER>(
+    { runtime, promise, children }: {
+        readonly runtime: ReactRuntime<R, ER>
+        readonly promise: Promise<Runtime.Runtime<R>>
+        readonly children?: React.ReactNode
+    }
+): React.ReactNode => {
+    const effectRuntime = React.use(promise)
+    const scope = Runtime.runSync(effectRuntime)(Component.useScope([effectRuntime]))
+    Runtime.runSync(effectRuntime)(Effect.provideService(
+        Component.useOnChange(() => Effect.addFinalizer(() => runtime.runtime.disposeEffect), [scope]),
+        Scope.Scope,
+        scope,
+    ))
+
+    return React.createElement(runtime.context, { value: effectRuntime }, children)
+}

packages/effect-fc/src/Result.ts

@@ -0,0 +1 @@
+export * from "@effect-atom/atom/Result"

packages/effect-fc/src/Stream.ts

@@ -0,0 +1,33 @@
+import { Effect, Equivalence, Option, Stream } from "effect"
+import * as React from "react"
+import * as Component from "./Component.js"
+
+
+export const useStream: {
+    <A, E, R>(
+        stream: Stream.Stream<A, E, R>
+    ): Effect.Effect<Option.Option<A>, never, R>
+    <A extends NonNullable<unknown>, E, R>(
+        stream: Stream.Stream<A, E, R>,
+        initialValue: A,
+    ): Effect.Effect<Option.Some<A>, never, R>
+} = Effect.fnUntraced(function* <A extends NonNullable<unknown>, E, R>(
+    stream: Stream.Stream<A, E, R>,
+    initialValue?: A,
+) {
+    const [reactStateValue, setReactStateValue] = React.useState(() => initialValue
+        ? Option.some(initialValue)
+        : Option.none()
+    )
+
+    yield* Component.useReactEffect(() => Effect.forkScoped(
+        Stream.runForEach(
+            Stream.changesWith(stream, Equivalence.strict()),
+            v => Effect.sync(() => setReactStateValue(Option.some(v))),
+        )
+    ), [stream])
+
+    return reactStateValue as Option.Some<A>
+})
+
+export * from "effect/Stream"

packages/effect-fc/src/Subscribable.ts

@@ -0,0 +1,52 @@
+import { Effect, Equivalence, Stream, Subscribable } from "effect"
+import * as React from "react"
+import * as Component from "./Component.js"
+
+
+export const zipLatestAll = <const T extends readonly Subscribable.Subscribable<any, any, any>[]>(
+    ...elements: T
+): Subscribable.Subscribable<
+    [T[number]] extends [never]
+        ? never
+        : { [K in keyof T]: T[K] extends Subscribable.Subscribable<infer A, infer _E, infer _R> ? A : never },
+    [T[number]] extends [never] ? never : T[number] extends Subscribable.Subscribable<infer _A, infer E, infer _R> ? E : never,
+    [T[number]] extends [never] ? never : T[number] extends Subscribable.Subscribable<infer _A, infer _E, infer R> ? R : never
+> => Subscribable.make({
+    get: Effect.all(elements.map(v => v.get)),
+    changes: Stream.zipLatestAll(...elements.map(v => v.changes)),
+}) as any
+
+export declare namespace useSubscribables {
+    export type Success<T extends readonly Subscribable.Subscribable<any, any, any>[]> = [T[number]] extends [never]
+        ? never
+        : { [K in keyof T]: T[K] extends Subscribable.Subscribable<infer A, infer _E, infer _R> ? A : never }
+
+    export interface Options<A> {
+        readonly equivalence?: Equivalence.Equivalence<A>
+    }
+}
+
+export const useSubscribables = Effect.fnUntraced(function* <const T extends readonly Subscribable.Subscribable<any, any, any>[]>(
+    elements: T,
+    options?: useSubscribables.Options<useSubscribables.Success<NoInfer<T>>>,
+): Effect.fn.Return<
+    useSubscribables.Success<T>,
+    [T[number]] extends [never] ? never : T[number] extends Subscribable.Subscribable<infer _A, infer E, infer _R> ? E : never,
+    [T[number]] extends [never] ? never : T[number] extends Subscribable.Subscribable<infer _A, infer _E, infer R> ? R : never
+> {
+    const [reactStateValue, setReactStateValue] = React.useState(
+        yield* Component.useOnMount(() => Effect.all(elements.map(v => v.get)))
+    )
+
+    yield* Component.useReactEffect(() => Stream.zipLatestAll(...elements.map(ref => ref.changes)).pipe(
+        Stream.changesWith((options?.equivalence as Equivalence.Equivalence<any[]> | undefined) ?? Equivalence.array(Equivalence.strict())),
+        Stream.runForEach(v =>
+            Effect.sync(() => setReactStateValue(v))
+        ),
+        Effect.forkScoped,
+    ), elements)
+
+    return reactStateValue as any
+})
+
+export * from "effect/Subscribable"

packages/effect-fc/src/SubscriptionRef.ts

@@ -0,0 +1,61 @@
+import { Effect, Equivalence, Ref, Stream, SubscriptionRef } from "effect"
+import * as React from "react"
+import * as Component from "./Component.js"
+import * as SetStateAction from "./SetStateAction.js"
+
+
+export declare namespace useSubscriptionRefState {
+    export interface Options<A> {
+        readonly equivalence?: Equivalence.Equivalence<A>
+    }
+}
+
+export const useSubscriptionRefState = Effect.fnUntraced(function* <A>(
+    ref: SubscriptionRef.SubscriptionRef<A>,
+    options?: useSubscriptionRefState.Options<NoInfer<A>>,
+): Effect.fn.Return<readonly [A, React.Dispatch<React.SetStateAction<A>>]> {
+    const [reactStateValue, setReactStateValue] = React.useState(yield* Component.useOnMount(() => ref))
+
+    yield* Component.useReactEffect(() => Effect.forkScoped(
+        Stream.runForEach(
+            Stream.changesWith(ref.changes, options?.equivalence ?? Equivalence.strict()),
+            v => Effect.sync(() => setReactStateValue(v)),
+        )
+    ), [ref])
+
+    const setValue = yield* Component.useCallbackSync(
+        (setStateAction: React.SetStateAction<A>) => Effect.andThen(
+            Ref.updateAndGet(ref, prevState => SetStateAction.value(setStateAction, prevState)),
+            v => setReactStateValue(v),
+        ),
+        [ref],
+    )
+
+    return [reactStateValue, setValue]
+})
+
+export declare namespace useSubscriptionRefFromState {
+    export interface Options<A> {
+        readonly equivalence?: Equivalence.Equivalence<A>
+    }
+}
+
+export const useSubscriptionRefFromState = Effect.fnUntraced(function* <A>(
+    [value, setValue]: readonly [A, React.Dispatch<React.SetStateAction<A>>],
+    options?: useSubscriptionRefFromState.Options<NoInfer<A>>,
+): Effect.fn.Return<SubscriptionRef.SubscriptionRef<A>> {
+    const ref = yield* Component.useOnChange(() => Effect.tap(
+        SubscriptionRef.make(value),
+        ref => Effect.forkScoped(
+            Stream.runForEach(
+                Stream.changesWith(ref.changes, options?.equivalence ?? Equivalence.strict()),
+                v => Effect.sync(() => setValue(v)),
+            )
+        ),
+    ), [setValue])
+
+    yield* Component.useReactEffect(() => Ref.set(ref, value), [value])
+    return ref
+})
+
+export * from "effect/SubscriptionRef"

packages/effect-fc/src/SubscriptionSubRef.ts

@@ -0,0 +1,186 @@
+import { Chunk, Effect, Effectable, Option, Predicate, 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("@effect-fc/SubscriptionSubRef/SubscriptionSubRef")
+export type SubscriptionSubRefTypeId = typeof SubscriptionSubRefTypeId
+
+export interface SubscriptionSubRef<in out A, in out B extends SubscriptionRef.SubscriptionRef<any>>
+extends SubscriptionSubRef.Variance<A, B>, SubscriptionRef.SubscriptionRef<A> {
+    readonly parent: B
+
+    readonly [Unify.typeSymbol]?: unknown
+    readonly [Unify.unifySymbol]?: SubscriptionSubRefUnify<this>
+    readonly [Unify.ignoreSymbol]?: SubscriptionSubRefUnifyIgnore
+}
+
+export declare namespace SubscriptionSubRef {
+    export interface Variance<in out A, in out B> {
+        readonly [SubscriptionSubRefTypeId]: {
+            readonly _A: Types.Invariant<A>
+            readonly _B: Types.Invariant<B>
+        }
+    }
+}
+
+export interface SubscriptionSubRefUnify<A extends { [Unify.typeSymbol]?: any }> extends SubscriptionRef.SubscriptionRefUnify<A> {
+    SubscriptionSubRef?: () => Extract<A[Unify.typeSymbol], SubscriptionSubRef<any, any>>
+}
+
+export interface SubscriptionSubRefUnifyIgnore extends SubscriptionRef.SubscriptionRefUnifyIgnore {
+    SubscriptionRef?: true
+}
+
+
+const refVariance = { _A: (_: any) => _ }
+const synchronizedRefVariance = { _A: (_: any) => _ }
+const subscriptionRefVariance = { _A: (_: any) => _ }
+const subscriptionSubRefVariance = { _A: (_: any) => _, _B: (_: any) => _ }
+
+class SubscriptionSubRefImpl<in out A, in out B extends SubscriptionRef.SubscriptionRef<any>>
+extends Effectable.Class<A> implements SubscriptionSubRef<A, B> {
+    readonly [Readable.TypeId]: Readable.TypeId = Readable.TypeId
+    readonly [Subscribable.TypeId]: Subscribable.TypeId = Subscribable.TypeId
+    readonly [Ref.RefTypeId] = refVariance
+    readonly [SynchronizedRef.SynchronizedRefTypeId] = synchronizedRefVariance
+    readonly [SubscriptionRef.SubscriptionRefTypeId] = subscriptionRefVariance
+    readonly [SubscriptionSubRefTypeId] = subscriptionSubRefVariance
+
+    readonly get: Effect.Effect<A>
+
+    constructor(
+        readonly parent: B,
+        readonly getter: (parentValue: Effect.Effect.Success<B>) => A,
+        readonly setter: (parentValue: Effect.Effect.Success<B>, value: A) => Effect.Effect.Success<B>,
+    ) {
+        super()
+        this.get = Effect.map(this.parent, this.getter)
+    }
+
+    commit() {
+        return this.get
+    }
+
+    get changes(): Stream.Stream<A> {
+        return Stream.unwrap(
+            Effect.map(this.get, a => Stream.concat(
+                Stream.make(a),
+                Stream.map(this.parent.changes, this.getter),
+            ))
+        )
+    }
+
+    modify<C>(f: (a: A) => readonly [C, A]): Effect.Effect<C> {
+        return this.modifyEffect(a => Effect.succeed(f(a)))
+    }
+
+    modifyEffect<C, E, R>(f: (a: A) => Effect.Effect<readonly [C, A], E, R>): Effect.Effect<C, E, R> {
+        return Effect.Do.pipe(
+            Effect.bind("b", (): Effect.Effect<Effect.Effect.Success<B>> => this.parent),
+            Effect.bind("ca", ({ b }) => f(this.getter(b))),
+            Effect.tap(({ b, ca: [, a] }) => SubscriptionRef.set(this.parent, this.setter(b, a))),
+            Effect.map(({ ca: [c] }) => c),
+        )
+    }
+}
+
+
+export const isSubscriptionSubRef = (u: unknown): u is SubscriptionSubRef<unknown, SubscriptionRef.SubscriptionRef<unknown>> => Predicate.hasProperty(u, SubscriptionSubRefTypeId)
+
+export const makeFromGetSet = <A, B extends SubscriptionRef.SubscriptionRef<any>>(
+    parent: B,
+    options: {
+        readonly get: (parentValue: Effect.Effect.Success<B>) => A
+        readonly set: (parentValue: Effect.Effect.Success<B>, value: A) => Effect.Effect.Success<B>
+    },
+): SubscriptionSubRef<A, B> => new SubscriptionSubRefImpl(parent, options.get, options.set)
+
+export const makeFromPath = <
+    B extends SubscriptionRef.SubscriptionRef<any>,
+    const P extends PropertyPath.Paths<Effect.Effect.Success<B>>,
+>(
+    parent: B,
+    path: P,
+): SubscriptionSubRef<PropertyPath.ValueFromPath<Effect.Effect.Success<B>, P>, B> => new SubscriptionSubRefImpl(
+    parent,
+    parentValue => Option.getOrThrow(PropertyPath.get(parentValue, path)),
+    (parentValue, value) => Option.getOrThrow(PropertyPath.immutableSet(parentValue, path, value)),
+)
+
+export const makeFromChunkIndex: {
+    <B extends SubscriptionRef.SubscriptionRef<Chunk.NonEmptyChunk<any>>>(
+        parent: B,
+        index: number,
+    ): SubscriptionSubRef<
+        Effect.Effect.Success<B> extends Chunk.NonEmptyChunk<infer A> ? A : never,
+        B
+    >
+    <B extends SubscriptionRef.SubscriptionRef<Chunk.Chunk<any>>>(
+        parent: B,
+        index: number,
+    ): SubscriptionSubRef<
+        Effect.Effect.Success<B> extends Chunk.Chunk<infer A> ? A : never,
+        B
+    >
+} = (
+    parent: SubscriptionRef.SubscriptionRef<Chunk.Chunk<any>>,
+    index: number,
+) => new SubscriptionSubRefImpl(
+    parent,
+    parentValue => Chunk.unsafeGet(parentValue, index),
+    (parentValue, value) => Chunk.replace(parentValue, index, value),
+) as any
+
+export const makeFromChunkFindFirst: {
+    <B extends SubscriptionRef.SubscriptionRef<Chunk.NonEmptyChunk<any>>>(
+        parent: B,
+        findFirstPredicate: Predicate.Predicate<Effect.Effect.Success<B> extends Chunk.NonEmptyChunk<infer A> ? A : never>,
+    ): SubscriptionSubRef<
+        Effect.Effect.Success<B> extends Chunk.NonEmptyChunk<infer A> ? A : never,
+        B
+    >
+    <B extends SubscriptionRef.SubscriptionRef<Chunk.Chunk<any>>>(
+        parent: B,
+        findFirstPredicate: Predicate.Predicate<Effect.Effect.Success<B> extends Chunk.Chunk<infer A> ? A : never>,
+    ): SubscriptionSubRef<
+        Effect.Effect.Success<B> extends Chunk.Chunk<infer A> ? A : never,
+        B
+    >
+} = (
+    parent: SubscriptionRef.SubscriptionRef<Chunk.Chunk<never>>,
+    findFirstPredicate: Predicate.Predicate.Any,
+) => new SubscriptionSubRefImpl(
+    parent,
+    parentValue => Option.getOrThrow(Chunk.findFirst(parentValue, findFirstPredicate)),
+    (parentValue, value) => Option.getOrThrow(Option.andThen(
+        Chunk.findFirstIndex(parentValue, findFirstPredicate),
+        index => Chunk.replace(parentValue, index, value),
+    )),
+) as any
+
+export const makeFromChunkFindLast: {
+    <B extends SubscriptionRef.SubscriptionRef<Chunk.NonEmptyChunk<any>>>(
+        parent: B,
+        findLastPredicate: Predicate.Predicate<Effect.Effect.Success<B> extends Chunk.NonEmptyChunk<infer A> ? A : never>,
+    ): SubscriptionSubRef<
+        Effect.Effect.Success<B> extends Chunk.NonEmptyChunk<infer A> ? A : never,
+        B
+    >
+    <B extends SubscriptionRef.SubscriptionRef<Chunk.Chunk<any>>>(
+        parent: B,
+        findLastPredicate: Predicate.Predicate<Effect.Effect.Success<B> extends Chunk.Chunk<infer A> ? A : never>,
+    ): SubscriptionSubRef<
+        Effect.Effect.Success<B> extends Chunk.Chunk<infer A> ? A : never,
+        B
+    >
+} = (
+    parent: SubscriptionRef.SubscriptionRef<Chunk.Chunk<never>>,
+    findLastPredicate: Predicate.Predicate.Any,
+) => new SubscriptionSubRefImpl(
+    parent,
+    parentValue => Option.getOrThrow(Chunk.findLast(parentValue, findLastPredicate)),
+    (parentValue, value) => Option.getOrThrow(Option.andThen(
+        Chunk.findLastIndex(parentValue, findLastPredicate),
+        index => Chunk.replace(parentValue, index, value),
+    )),
+) as any

packages/effect-fc/src/Suspense.ts

@@ -1,74 +0,0 @@
-import { Effect, Function, Predicate, Runtime, Scope } from "effect"
-import * as React from "react"
-import type * as Component from "./Component.js"
-import type { ExcludeKeys } from "./utils.js"
-
-
-export const TypeId: unique symbol = Symbol.for("effect-fc/Suspense")
-export type TypeId = typeof TypeId
-
-export interface Suspense extends Suspense.Options {
-    readonly [TypeId]: TypeId
-}
-
-export namespace Suspense {
-    export interface Options {
-        readonly defaultFallback?: React.ReactNode
-    }
-
-    export type Props = Omit<React.SuspenseProps, "children">
-}
-
-
-const SuspenseProto = Object.freeze({
-    [TypeId]: TypeId,
-    makeFunctionComponent(
-        this: Component.Component<any, any, any> & Suspense,
-        runtimeRef: React.RefObject<Runtime.Runtime<any>>,
-        scope: Scope.Scope,
-    ): React.FC<any> {
-        const SuspenseInner = (props: { readonly promise: Promise<React.ReactNode> }) => React.use(props.promise)
-
-        return ({ fallback, name, ...props }: Suspense.Props) => {
-            const promise = Runtime.runPromise(runtimeRef.current)(
-                Effect.provideService(this.body(props), Scope.Scope, scope)
-            )
-
-            return React.createElement(
-                React.Suspense,
-                { fallback: fallback ?? this.defaultFallback, name },
-                React.createElement(SuspenseInner, { promise }),
-            )
-        }
-    },
-} as const)
-
-
-export const isSuspense = (u: unknown): u is Suspense => Predicate.hasProperty(u, TypeId)
-
-export const suspense = <T extends Component.Component<P, any, any>, P extends {}>(
-    self: T & Component.Component<ExcludeKeys<P, keyof Suspense.Props>, any, any>
-): (
-    & Omit<T, keyof Component.Component<P, Component.Component.Error<T>, Component.Component.Context<T>>>
-    & Component.Component<P & Suspense.Props, Component.Component.Error<T>, Component.Component.Context<T>>
-    & Suspense
-) => Object.setPrototypeOf(
-    Object.assign(function() {}, self, SuspenseProto),
-    Object.getPrototypeOf(self),
-)
-
-export const withOptions: {
-    <T extends Component.Component<any, any, any> & Suspense>(
-        options: Partial<Suspense.Options>
-    ): (self: T) => T
-    <T extends Component.Component<any, any, any> & Suspense>(
-        self: T,
-        options: Partial<Suspense.Options>,
-    ): T
-} = Function.dual(2, <T extends Component.Component<any, any, any> & Suspense>(
-    self: T,
-    options: Partial<Suspense.Options>,
-): T => Object.setPrototypeOf(
-    Object.assign(function() {}, self, options),
-    Object.getPrototypeOf(self),
-))

packages/effect-fc/src/index.ts

@@ -1,5 +1,17 @@
+export * as Async from "./Async.js"
 export * as Component from "./Component.js"
-export * as Hook from "./Hook.js"
+export * as ErrorObserver from "./ErrorObserver.js"
+export * as Form from "./Form.js"
 export * as Memoized from "./Memoized.js"
-export * as ReactManagedRuntime from "./ReactManagedRuntime.js"
+export * as Mutation from "./Mutation.js"
-export * as Suspense from "./Suspense.js"
+export * as PropertyPath from "./PropertyPath.js"
+export * as PubSub from "./PubSub.js"
+export * as Query from "./Query.js"
+export * as QueryClient from "./QueryClient.js"
+export * as ReactRuntime from "./ReactRuntime.js"
+export * as Result from "./Result.js"
+export * as SetStateAction from "./SetStateAction.js"
+export * as Stream from "./Stream.js"
+export * as Subscribable from "./Subscribable.js"
+export * as SubscriptionRef from "./SubscriptionRef.js"
+export * as SubscriptionSubRef from "./SubscriptionSubRef.js"

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

@@ -1,111 +0,0 @@
-import { Chunk, 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("effect-fc/types/SubscriptionSubRef")
-export type SubscriptionSubRefTypeId = typeof SubscriptionSubRefTypeId
-
-export interface SubscriptionSubRef<in out A, in out B> extends SubscriptionSubRef.Variance<A, B>, SubscriptionRef.SubscriptionRef<A> {
-    readonly parent: SubscriptionRef.SubscriptionRef<B>
-
-    readonly [Unify.typeSymbol]?: unknown
-    readonly [Unify.unifySymbol]?: SubscriptionSubRefUnify<this>
-    readonly [Unify.ignoreSymbol]?: SubscriptionSubRefUnifyIgnore
-}
-
-export declare namespace SubscriptionSubRef {
-    export interface Variance<in out A, in out B> {
-        readonly [SubscriptionSubRefTypeId]: {
-            readonly _A: Types.Invariant<A>
-            readonly _B: Types.Invariant<B>
-        }
-    }
-}
-
-export interface SubscriptionSubRefUnify<A extends { [Unify.typeSymbol]?: any }> extends SubscriptionRef.SubscriptionRefUnify<A> {
-    SubscriptionSubRef?: () => Extract<A[Unify.typeSymbol], SubscriptionSubRef<any, any>>
-}
-
-export interface SubscriptionSubRefUnifyIgnore extends SubscriptionRef.SubscriptionRefUnifyIgnore {
-    SubscriptionRef?: true
-}
-
-
-const refVariance = { _A: (_: any) => _ }
-const synchronizedRefVariance = { _A: (_: any) => _ }
-const subscriptionRefVariance = { _A: (_: any) => _ }
-const subscriptionSubRefVariance = { _A: (_: any) => _, _B: (_: any) => _ }
-
-class SubscriptionSubRefImpl<in out A, in out B> extends Effectable.Class<A> implements SubscriptionSubRef<A, B> {
-    readonly [Readable.TypeId]: Readable.TypeId = Readable.TypeId
-    readonly [Subscribable.TypeId]: Subscribable.TypeId = Subscribable.TypeId
-    readonly [Ref.RefTypeId] = refVariance
-    readonly [SynchronizedRef.SynchronizedRefTypeId] = synchronizedRefVariance
-    readonly [SubscriptionRef.SubscriptionRefTypeId] = subscriptionRefVariance
-    readonly [SubscriptionSubRefTypeId] = subscriptionSubRefVariance
-
-    readonly get: Effect.Effect<A>
-
-    constructor(
-        readonly parent: SubscriptionRef.SubscriptionRef<B>,
-        readonly getter: (parentValue: B) => A,
-        readonly setter: (parentValue: B, value: A) => B,
-    ) {
-        super()
-        this.get = Effect.map(this.parent, this.getter)
-    }
-
-    commit() {
-        return this.get
-    }
-
-    get changes(): Stream.Stream<A> {
-        return this.get.pipe(
-            Effect.map(a => this.parent.changes.pipe(
-                Stream.map(this.getter),
-                s => Stream.concat(Stream.make(a), s),
-            )),
-            Stream.unwrap,
-        )
-    }
-
-    modify<C>(f: (a: A) => readonly [C, A]): Effect.Effect<C> {
-        return this.modifyEffect(a => Effect.succeed(f(a)))
-    }
-
-    modifyEffect<C, E, R>(f: (a: A) => Effect.Effect<readonly [C, A], E, R>): Effect.Effect<C, E, R> {
-        return Effect.Do.pipe(
-            Effect.bind("b", () => Ref.get(this.parent)),
-            Effect.bind("ca", ({ b }) => f(this.getter(b))),
-            Effect.tap(({ b, ca: [, a] }) => Ref.set(this.parent, this.setter(b, a))),
-            Effect.map(({ ca: [c] }) => c),
-        )
-    }
-}
-
-
-export const makeFromGetSet = <A, B>(
-    parent: SubscriptionRef.SubscriptionRef<B>,
-    options: {
-        readonly get: (parentValue: B) => A
-        readonly set: (parentValue: B, value: A) => B
-    },
-): SubscriptionSubRef<A, B> => new SubscriptionSubRefImpl(parent, options.get, options.set)
-
-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)),
-)
-
-export const makeFromChunkRef = <A>(
-    parent: SubscriptionRef.SubscriptionRef<Chunk.Chunk<A>>,
-    index: number,
-): SubscriptionSubRef<A, Chunk.Chunk<A>> => new SubscriptionSubRefImpl(
-    parent,
-    parentValue => Chunk.unsafeGet(parentValue, index),
-    (parentValue, value) => Chunk.replace(parentValue, index, value),
-)

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

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

packages/effect-fc/tsconfig.json

@@ -26,7 +26,12 @@
 
     // Build
     "outDir": "./dist",
-    "declaration": true
+    "declaration": true,
+    "sourceMap": true,
+
+    "plugins": [
+      { "name": "@effect/language-service" }
+    ]
   },
 
   "include": ["./src"]

packages/example/biome.json

@@ -0,0 +1,8 @@
+{
+  "$schema": "https://biomejs.dev/schemas/latest/schema.json",
+  "root": false,
+  "extends": "//",
+  "files": {
+    "includes": ["./src/**", "!src/routeTree.gen.ts"]
+  }
+}

packages/example/eslint.config.js

@@ -1,28 +0,0 @@
-import js from '@eslint/js'
-import globals from 'globals'
-import reactHooks from 'eslint-plugin-react-hooks'
-import reactRefresh from 'eslint-plugin-react-refresh'
-import tseslint from 'typescript-eslint'
-
-export default tseslint.config(
-  { ignores: ['dist'] },
-  {
-    extends: [js.configs.recommended, ...tseslint.configs.recommended],
-    files: ['**/*.{ts,tsx}'],
-    languageOptions: {
-      ecmaVersion: 2020,
-      globals: globals.browser,
-    },
-    plugins: {
-      'react-hooks': reactHooks,
-      'react-refresh': reactRefresh,
-    },
-    rules: {
-      ...reactHooks.configs.recommended.rules,
-      'react-refresh/only-export-components': [
-        'warn',
-        { allowConstantExport: true },
-      ],
-    },
-  },
-)

packages/example/package.json

@@ -5,48 +5,38 @@
   "private": true,
   "scripts": {
     "dev": "vite",
-    "build": "tsc -b && vite build",
     "lint:tsc": "tsc --noEmit",
-    "lint:eslint": "eslint .",
+    "lint:biome": "biome lint",
-    "preview": "vite preview"
+    "preview": "vite preview",
+    "clean:cache": "rm -rf .turbo node_modules/.tmp node_modules/.vite* .tanstack",
+    "clean:dist": "rm -rf dist",
+    "clean:modules": "rm -rf node_modules"
   },
   "devDependencies": {
-    "@effect/language-service": "^0.23.4",
+    "@tanstack/react-router": "^1.154.12",
-    "@eslint/js": "^9.26.0",
+    "@tanstack/react-router-devtools": "^1.154.12",
-    "@tanstack/react-router": "^1.120.3",
+    "@tanstack/router-plugin": "^1.154.12",
-    "@tanstack/react-router-devtools": "^1.120.3",
+    "@types/react": "^19.2.9",
-    "@tanstack/router-plugin": "^1.120.3",
+    "@types/react-dom": "^19.2.3",
-    "@thilawyn/thilaschema": "^0.1.4",
+    "@vitejs/plugin-react": "^5.1.2",
-    "@types/react": "^19.1.4",
+    "globals": "^17.0.0",
-    "@types/react-dom": "^19.1.5",
+    "react": "^19.2.3",
-    "@vitejs/plugin-react": "^4.4.1",
+    "react-dom": "^19.2.3",
-    "eslint": "^9.26.0",
+    "type-fest": "^5.4.1",
-    "eslint-plugin-react-hooks": "^5.2.0",
+    "vite": "^7.3.1"
-    "eslint-plugin-react-refresh": "^0.4.20",
-    "globals": "^16.1.0",
-    "react": "^19.1.0",
-    "react-dom": "^19.1.0",
-    "typescript-eslint": "^8.32.1",
-    "vite": "^6.3.5"
   },
   "dependencies": {
-    "@effect/platform": "^0.82.1",
+    "@effect/platform": "^0.94.2",
-    "@effect/platform-browser": "^0.62.1",
+    "@effect/platform-browser": "^0.74.0",
     "@radix-ui/themes": "^3.2.1",
-    "@typed/async-data": "^0.13.1",
     "@typed/id": "^0.17.2",
-    "@typed/lazy-ref": "^0.3.3",
+    "effect": "^3.19.15",
-    "effect": "^3.15.1",
     "effect-fc": "workspace:*",
-    "lucide-react": "^0.510.0",
-    "mobx": "^6.13.7",
     "react-icons": "^5.5.0"
   },
   "overrides": {
-    "effect": "^3.15.1",
+    "@types/react": "^19.2.9",
-    "@effect/platform": "^0.82.1",
+    "effect": "^3.19.15",
-    "@effect/platform-browser": "^0.62.1",
+    "react": "^19.2.3"
-    "@typed/lazy-ref": "^0.3.3",
-    "@typed/async-data": "^0.13.1"
   }
 }

packages/example/src/domain/Todo.ts

@@ -1,5 +1,5 @@
-import { ThSchema } from "@thilawyn/thilaschema"
 import { Schema } from "effect"
+import { assertEncodedJsonifiable } from "@/lib/schema"
 
 
 export class Todo extends Schema.Class<Todo>("Todo")({
@@ -14,7 +14,7 @@ export const TodoFromJsonStruct = Schema.Struct({
     ...Todo.fields,
     completedAt: Schema.Option(Schema.DateTimeUtc),
 }).pipe(
-    ThSchema.assertEncodedJsonifiable
+    assertEncodedJsonifiable
 )
 
 export const TodoFromJson = Schema.compose(TodoFromJsonStruct, Todo)

packages/example/src/lib/form/TextFieldFormInputView.tsx

@@ -0,0 +1,75 @@
+import { Callout, Flex, Spinner, Switch, TextField } from "@radix-ui/themes"
+import { Array, Option, Struct } from "effect"
+import { Component, Form, Subscribable } from "effect-fc"
+
+
+interface Props
+extends TextField.RootProps, Form.useInput.Options {
+    readonly optional?: false
+    readonly field: Form.FormField<any, string>
+}
+
+interface OptionalProps
+extends Omit<TextField.RootProps, "optional" | "defaultValue">, Form.useOptionalInput.Options<string> {
+    readonly optional: true
+    readonly field: Form.FormField<any, Option.Option<string>>
+}
+
+export type TextFieldFormInputProps = Props | OptionalProps
+
+
+export class TextFieldFormInputView extends Component.make("TextFieldFormInputView")(function*(props: TextFieldFormInputProps) {
+    const input: (
+        | { readonly optional: true } & Form.useOptionalInput.Success<string>
+        | { readonly optional: false } & Form.useInput.Success<string>
+    ) = props.optional
+        // biome-ignore lint/correctness/useHookAtTopLevel: "optional" reactivity not supported
+        ? { optional: true, ...yield* Form.useOptionalInput(props.field, props) }
+        // biome-ignore lint/correctness/useHookAtTopLevel: "optional" reactivity not supported
+        : { optional: false, ...yield* Form.useInput(props.field, props) }
+
+    const [issues, isValidating, isSubmitting] = yield* Subscribable.useSubscribables([
+        props.field.issues,
+        props.field.isValidating,
+        props.field.isSubmitting,
+    ])
+
+    return (
+        <Flex direction="column" gap="1">
+            <TextField.Root
+                value={input.value}
+                onChange={e => input.setValue(e.target.value)}
+                disabled={(input.optional && !input.enabled) || isSubmitting}
+                {...Struct.omit(props, "optional", "defaultValue")}
+            >
+                {input.optional &&
+                    <TextField.Slot side="left">
+                        <Switch
+                            size="1"
+                            checked={input.enabled}
+                            onCheckedChange={input.setEnabled}
+                        />
+                    </TextField.Slot>
+                }
+
+                {isValidating &&
+                    <TextField.Slot side="right">
+                        <Spinner />
+                    </TextField.Slot>
+                }
+
+                {props.children}
+            </TextField.Root>
+
+            {Option.match(Array.head(issues), {
+                onSome: issue => (
+                    <Callout.Root>
+                        <Callout.Text>{issue.message}</Callout.Text>
+                    </Callout.Root>
+                ),
+
+                onNone: () => <></>,
+            })}
+        </Flex>
+    )
+}) {}

packages/example/src/lib/schema/datetime.ts

@@ -0,0 +1,38 @@
+import { DateTime, Effect, Option, ParseResult, Schema } from "effect"
+
+
+export class DateTimeUtcFromZoned extends Schema.transformOrFail(
+    Schema.DateTimeZonedFromSelf,
+    Schema.DateTimeUtcFromSelf,
+    {
+        strict: true,
+        encode: DateTime.setZoneCurrent,
+        decode: i => ParseResult.succeed(DateTime.toUtc(i)),
+    },
+) {}
+
+export class DateTimeZonedFromUtc extends Schema.transformOrFail(
+    Schema.DateTimeUtcFromSelf,
+    Schema.DateTimeZonedFromSelf,
+    {
+        strict: true,
+        encode: a => ParseResult.succeed(DateTime.toUtc(a)),
+        decode: DateTime.setZoneCurrent,
+    },
+) {}
+
+export class DateTimeUtcFromZonedInput extends Schema.transformOrFail(
+    Schema.String,
+    DateTimeUtcFromZoned,
+    {
+        strict: true,
+        encode: a => ParseResult.succeed(DateTime.formatIsoZoned(a).slice(0, 16)),
+        decode: (i, _, ast) => Effect.flatMap(
+            DateTime.CurrentTimeZone,
+            timeZone => Option.match(DateTime.makeZoned(i, { timeZone, adjustForTimeZone: true }), {
+                onSome: ParseResult.succeed,
+                onNone: () => ParseResult.fail(new ParseResult.Type(ast, i, `Unable to decode ${JSON.stringify(i)} into a DateTime.Zoned`)),
+            }),
+        ),
+    },
+) {}

packages/example/src/lib/schema/index.ts

@@ -0,0 +1,2 @@
+export * from "./datetime"
+export * from "./json"

packages/example/src/lib/schema/json.ts

@@ -0,0 +1,6 @@
+import type { Schema } from "effect"
+import type { JsonValue } from "type-fest"
+
+
+export const assertEncodedJsonifiable = <S extends Schema.Schema<A, I, R>, A, I extends JsonValue, R>(schema: S & Schema.Schema<A, I, R>): S => schema
+export const assertTypeJsonifiable = <S extends Schema.Schema<A, I, R>, A extends JsonValue, I, R>(schema: S & Schema.Schema<A, I, R>): S => schema

packages/example/src/main.tsx

@@ -1,5 +1,5 @@
 import { createRouter, RouterProvider } from "@tanstack/react-router"
-import { ReactManagedRuntime } from "effect-fc"
+import { ReactRuntime } from "effect-fc"
 import { StrictMode } from "react"
 import { createRoot } from "react-dom/client"
 import { routeTree } from "./routeTree.gen"
@@ -14,10 +14,11 @@ declare module "@tanstack/react-router" {
     }
 }
 
+// biome-ignore lint/style/noNonNullAssertion: React entrypoint
 createRoot(document.getElementById("root")!).render(
     <StrictMode>
-        <ReactManagedRuntime.Provider runtime={runtime}>
+        <ReactRuntime.Provider runtime={runtime}>
             <RouterProvider router={router} />
-        </ReactManagedRuntime.Provider>
+        </ReactRuntime.Provider>
     </StrictMode>
 )

packages/example/src/routeTree.gen.ts

@@ -9,11 +9,30 @@
 // Additionally, you should also exclude this file from your linter and/or formatter to prevent it from being checked or modified.
 
 import { Route as rootRouteImport } from './routes/__root'
+import { Route as ResultRouteImport } from './routes/result'
+import { Route as QueryRouteImport } from './routes/query'
+import { Route as FormRouteImport } from './routes/form'
 import { Route as BlankRouteImport } from './routes/blank'
 import { Route as IndexRouteImport } from './routes/index'
 import { Route as DevMemoRouteImport } from './routes/dev/memo'
+import { Route as DevContextRouteImport } from './routes/dev/context'
 import { Route as DevAsyncRenderingRouteImport } from './routes/dev/async-rendering'
 
+const ResultRoute = ResultRouteImport.update({
+  id: '/result',
+  path: '/result',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const QueryRoute = QueryRouteImport.update({
+  id: '/query',
+  path: '/query',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const FormRoute = FormRouteImport.update({
+  id: '/form',
+  path: '/form',
+  getParentRoute: () => rootRouteImport,
+} as any)
 const BlankRoute = BlankRouteImport.update({
   id: '/blank',
   path: '/blank',
@@ -29,6 +48,11 @@ const DevMemoRoute = DevMemoRouteImport.update({
   path: '/dev/memo',
   getParentRoute: () => rootRouteImport,
 } as any)
+const DevContextRoute = DevContextRouteImport.update({
+  id: '/dev/context',
+  path: '/dev/context',
+  getParentRoute: () => rootRouteImport,
+} as any)
 const DevAsyncRenderingRoute = DevAsyncRenderingRouteImport.update({
   id: '/dev/async-rendering',
   path: '/dev/async-rendering',
@@ -38,39 +62,101 @@ const DevAsyncRenderingRoute = DevAsyncRenderingRouteImport.update({
 export interface FileRoutesByFullPath {
   '/': typeof IndexRoute
   '/blank': typeof BlankRoute
+  '/form': typeof FormRoute
+  '/query': typeof QueryRoute
+  '/result': typeof ResultRoute
   '/dev/async-rendering': typeof DevAsyncRenderingRoute
+  '/dev/context': typeof DevContextRoute
   '/dev/memo': typeof DevMemoRoute
 }
 export interface FileRoutesByTo {
   '/': typeof IndexRoute
   '/blank': typeof BlankRoute
+  '/form': typeof FormRoute
+  '/query': typeof QueryRoute
+  '/result': typeof ResultRoute
   '/dev/async-rendering': typeof DevAsyncRenderingRoute
+  '/dev/context': typeof DevContextRoute
   '/dev/memo': typeof DevMemoRoute
 }
 export interface FileRoutesById {
   __root__: typeof rootRouteImport
   '/': typeof IndexRoute
   '/blank': typeof BlankRoute
+  '/form': typeof FormRoute
+  '/query': typeof QueryRoute
+  '/result': typeof ResultRoute
   '/dev/async-rendering': typeof DevAsyncRenderingRoute
+  '/dev/context': typeof DevContextRoute
   '/dev/memo': typeof DevMemoRoute
 }
 export interface FileRouteTypes {
   fileRoutesByFullPath: FileRoutesByFullPath
-  fullPaths: '/' | '/blank' | '/dev/async-rendering' | '/dev/memo'
+  fullPaths:
+    | '/'
+    | '/blank'
+    | '/form'
+    | '/query'
+    | '/result'
+    | '/dev/async-rendering'
+    | '/dev/context'
+    | '/dev/memo'
   fileRoutesByTo: FileRoutesByTo
-  to: '/' | '/blank' | '/dev/async-rendering' | '/dev/memo'
+  to:
-  id: '__root__' | '/' | '/blank' | '/dev/async-rendering' | '/dev/memo'
+    | '/'
+    | '/blank'
+    | '/form'
+    | '/query'
+    | '/result'
+    | '/dev/async-rendering'
+    | '/dev/context'
+    | '/dev/memo'
+  id:
+    | '__root__'
+    | '/'
+    | '/blank'
+    | '/form'
+    | '/query'
+    | '/result'
+    | '/dev/async-rendering'
+    | '/dev/context'
+    | '/dev/memo'
   fileRoutesById: FileRoutesById
 }
 export interface RootRouteChildren {
   IndexRoute: typeof IndexRoute
   BlankRoute: typeof BlankRoute
+  FormRoute: typeof FormRoute
+  QueryRoute: typeof QueryRoute
+  ResultRoute: typeof ResultRoute
   DevAsyncRenderingRoute: typeof DevAsyncRenderingRoute
+  DevContextRoute: typeof DevContextRoute
   DevMemoRoute: typeof DevMemoRoute
 }
 
 declare module '@tanstack/react-router' {
   interface FileRoutesByPath {
+    '/result': {
+      id: '/result'
+      path: '/result'
+      fullPath: '/result'
+      preLoaderRoute: typeof ResultRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/query': {
+      id: '/query'
+      path: '/query'
+      fullPath: '/query'
+      preLoaderRoute: typeof QueryRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/form': {
+      id: '/form'
+      path: '/form'
+      fullPath: '/form'
+      preLoaderRoute: typeof FormRouteImport
+      parentRoute: typeof rootRouteImport
+    }
     '/blank': {
       id: '/blank'
       path: '/blank'
@@ -92,6 +178,13 @@ declare module '@tanstack/react-router' {
       preLoaderRoute: typeof DevMemoRouteImport
       parentRoute: typeof rootRouteImport
     }
+    '/dev/context': {
+      id: '/dev/context'
+      path: '/dev/context'
+      fullPath: '/dev/context'
+      preLoaderRoute: typeof DevContextRouteImport
+      parentRoute: typeof rootRouteImport
+    }
     '/dev/async-rendering': {
       id: '/dev/async-rendering'
       path: '/dev/async-rendering'
@@ -105,7 +198,11 @@ declare module '@tanstack/react-router' {
 const rootRouteChildren: RootRouteChildren = {
   IndexRoute: IndexRoute,
   BlankRoute: BlankRoute,
+  FormRoute: FormRoute,
+  QueryRoute: QueryRoute,
+  ResultRoute: ResultRoute,
   DevAsyncRenderingRoute: DevAsyncRenderingRoute,
+  DevContextRoute: DevContextRoute,
   DevMemoRoute: DevMemoRoute,
 }
 export const routeTree = rootRouteImport

packages/example/src/routes/dev/async-rendering.tsx

@@ -1,16 +1,16 @@
-import { runtime } from "@/runtime"
 import { Flex, Text, TextField } from "@radix-ui/themes"
 import { createFileRoute } from "@tanstack/react-router"
 import { GetRandomValues, makeUuid4 } from "@typed/id"
 import { Effect } from "effect"
-import { Component, Hook, Memoized, Suspense } from "effect-fc"
+import { Async, Component, Memoized } from "effect-fc"
 import * as React from "react"
+import { runtime } from "@/runtime"
 
 
 // Generator version
-const RouteComponent = Component.make(function* AsyncRendering() {
+const RouteComponent = Component.makeUntraced(function* AsyncRendering() {
-    const MemoizedAsyncComponentFC = yield* MemoizedAsyncComponent
+    const MemoizedAsyncComponentFC = yield* MemoizedAsyncComponent.use
-    const AsyncComponentFC = yield* AsyncComponent
+    const AsyncComponentFC = yield* AsyncComponent.use
     const [input, setInput] = React.useState("")
 
     return (
@@ -50,8 +50,8 @@ const RouteComponent = Component.make(function* AsyncRendering() {
 // )
 
 
-class AsyncComponent extends Component.make(function* AsyncComponent() {
+class AsyncComponent extends Component.makeUntraced("AsyncComponent")(function*() {
-    const SubComponentFC = yield* SubComponent
+    const SubComponentFC = yield* SubComponent.use
 
     yield* Effect.sleep("500 millis") // Async operation
     // Cannot use React hooks after the async operation
@@ -63,13 +63,13 @@ class AsyncComponent extends Component.make(function* AsyncComponent() {
         </Flex>
     )
 }).pipe(
-    Suspense.suspense,
+    Async.async,
-    Suspense.withOptions({ defaultFallback: <p>Loading...</p> }),
+    Async.withOptions({ defaultFallback: <p>Loading...</p> }),
 ) {}
-class MemoizedAsyncComponent extends Memoized.memo(AsyncComponent) {}
+class MemoizedAsyncComponent extends Memoized.memoized(AsyncComponent) {}
 
-class SubComponent extends Component.make(function* SubComponent() {
+class SubComponent extends Component.makeUntraced("SubComponent")(function*() {
-    const [state] = React.useState(yield* Hook.useOnce(() => Effect.provide(makeUuid4, GetRandomValues.CryptoRandom)))
+    const [state] = React.useState(yield* Component.useOnMount(() => Effect.provide(makeUuid4, GetRandomValues.CryptoRandom)))
     return <Text>{state}</Text>
 }) {}
 

packages/example/src/routes/dev/context.tsx

@@ -0,0 +1,42 @@
+import { Container, Flex, Text, TextField } from "@radix-ui/themes"
+import { createFileRoute } from "@tanstack/react-router"
+import { Console, Effect } from "effect"
+import { Component } from "effect-fc"
+import * as React from "react"
+import { runtime } from "@/runtime"
+
+
+class SubService extends Effect.Service<SubService>()("SubService", {
+    effect: (value: string) => Effect.succeed({ value })
+}) {}
+
+const SubComponent = Component.makeUntraced("SubComponent")(function*() {
+    const service = yield* SubService
+    yield* Component.useOnMount(() => Effect.gen(function*() {
+        yield* Effect.addFinalizer(() => Console.log("SubComponent unmounted"))
+        yield* Console.log("SubComponent mounted")
+    }))
+
+    return <Text>{service.value}</Text>
+})
+
+const ContextView = Component.makeUntraced("ContextView")(function*() {
+    const [serviceValue, setServiceValue] = React.useState("test")
+    const SubServiceLayer = React.useMemo(() => SubService.Default(serviceValue), [serviceValue])
+    const SubComponentFC = yield* Effect.provide(SubComponent.use, yield* Component.useContextFromLayer(SubServiceLayer))
+
+    return (
+        <Container>
+            <Flex direction="column" align="center">
+                <TextField.Root value={serviceValue} onChange={e => setServiceValue(e.target.value)} />
+                <SubComponentFC />
+            </Flex>
+        </Container>
+    )
+}).pipe(
+    Component.withRuntime(runtime.context)
+)
+
+export const Route = createFileRoute("/dev/context")({
+    component: ContextView
+})

packages/example/src/routes/dev/memo.tsx

@@ -1,13 +1,13 @@
-import { runtime } from "@/runtime"
 import { Flex, Text, TextField } from "@radix-ui/themes"
 import { createFileRoute } from "@tanstack/react-router"
 import { GetRandomValues, makeUuid4 } from "@typed/id"
 import { Effect } from "effect"
 import { Component, Memoized } from "effect-fc"
 import * as React from "react"
+import { runtime } from "@/runtime"
 
 
-const RouteComponent = Component.make(function* RouteComponent() {
+const RouteComponent = Component.makeUntraced("RouteComponent")(function*() {
     const [value, setValue] = React.useState("")
 
     return (
@@ -17,20 +17,20 @@ const RouteComponent = Component.make(function* RouteComponent() {
                 onChange={e => setValue(e.target.value)}
             />
 
-            {yield* Effect.map(SubComponent, FC => <FC />)}
+            {yield* Effect.map(SubComponent.use, FC => <FC />)}
-            {yield* Effect.map(MemoizedSubComponent, FC => <FC />)}
+            {yield* Effect.map(MemoizedSubComponent.use, FC => <FC />)}
         </Flex>
     )
 }).pipe(
     Component.withRuntime(runtime.context)
 )
 
-class SubComponent extends Component.make(function* SubComponent() {
+class SubComponent extends Component.makeUntraced("SubComponent")(function*() {
     const id = yield* makeUuid4.pipe(Effect.provide(GetRandomValues.CryptoRandom))
     return <Text>{id}</Text>
 }) {}
 
-class MemoizedSubComponent extends Memoized.memo(SubComponent) {}
+class MemoizedSubComponent extends Memoized.memoized(SubComponent) {}
 
 export const Route = createFileRoute("/dev/memo")({
     component: RouteComponent,

packages/example/src/routes/form.tsx

@@ -0,0 +1,132 @@
+import { Button, Container, Flex, Text } from "@radix-ui/themes"
+import { createFileRoute } from "@tanstack/react-router"
+import { Console, Effect, Match, Option, ParseResult, Schema } from "effect"
+import { Component, Form, Subscribable } from "effect-fc"
+import { TextFieldFormInputView } from "@/lib/form/TextFieldFormInputView"
+import { DateTimeUtcFromZonedInput } from "@/lib/schema"
+import { runtime } from "@/runtime"
+
+
+const email = Schema.pattern<typeof Schema.String>(
+    /^(?!\.)(?!.*\.\.)([A-Z0-9_+-.]*)[A-Z0-9_+-]@([A-Z0-9][A-Z0-9-]*\.)+[A-Z]{2,}$/i,
+
+    {
+        identifier: "email",
+        title: "email",
+        message: () => "Not an email address",
+    },
+)
+
+const RegisterFormSchema = Schema.Struct({
+    email: Schema.String.pipe(email),
+    password: Schema.String.pipe(Schema.minLength(3)),
+    birth: Schema.OptionFromSelf(DateTimeUtcFromZonedInput),
+})
+
+const RegisterFormSubmitSchema = Schema.Struct({
+    email: Schema.transformOrFail(
+        Schema.String,
+        Schema.String,
+        {
+            decode: (input, _options, ast) => input !== "admin@admin.com"
+                ? ParseResult.succeed(input)
+                : ParseResult.fail(new ParseResult.Type(ast, input, "This email is already in use.")),
+            encode: ParseResult.succeed,
+        },
+    ),
+    password: Schema.String,
+    birth: Schema.OptionFromSelf(Schema.DateTimeUtcFromSelf),
+})
+
+class RegisterFormService extends Effect.Service<RegisterFormService>()("RegisterFormService", {
+    scoped: Form.service({
+        schema: RegisterFormSchema.pipe(
+            Schema.compose(
+                Schema.transformOrFail(
+                    Schema.typeSchema(RegisterFormSchema),
+                    Schema.typeSchema(RegisterFormSchema),
+                    {
+                        decode: v => Effect.andThen(Effect.sleep("500 millis"), ParseResult.succeed(v)),
+                        encode: ParseResult.succeed,
+                    },
+                ),
+            ),
+        ),
+
+        initialEncodedValue: { email: "", password: "", birth: Option.none() },
+        f: Effect.fnUntraced(function*([value]) {
+            yield* Effect.sleep("500 millis")
+            return yield* Schema.decode(RegisterFormSubmitSchema)(value)
+        }),
+        debounce: "500 millis",
+    })
+}) {}
+
+class RegisterFormView extends Component.make("RegisterFormView")(function*() {
+    const form = yield* RegisterFormService
+    const [canSubmit, submitResult] = yield* Subscribable.useSubscribables([
+        form.canSubmit,
+        form.mutation.result,
+    ])
+
+    const runPromise = yield* Component.useRunPromise()
+    const TextFieldFormInput = yield* TextFieldFormInputView.use
+
+    yield* Component.useOnMount(() => Effect.gen(function*() {
+        yield* Effect.addFinalizer(() => Console.log("RegisterFormView unmounted"))
+        yield* Console.log("RegisterFormView mounted")
+    }))
+
+
+    return (
+        <Container width="300">
+            <form onSubmit={e => {
+                e.preventDefault()
+                void runPromise(form.submit)
+            }}>
+                <Flex direction="column" gap="2">
+                    <TextFieldFormInput
+                        field={yield* form.field(["email"])}
+                    />
+
+                    <TextFieldFormInput
+                        field={yield* form.field(["password"])}
+                    />
+
+                    <TextFieldFormInput
+                        optional
+                        type="datetime-local"
+                        field={yield* form.field(["birth"])}
+                        defaultValue=""
+                    />
+
+                    <Button disabled={!canSubmit}>Submit</Button>
+                </Flex>
+            </form>
+
+            {Match.value(submitResult).pipe(
+                Match.tag("Initial", () => <></>),
+                Match.tag("Running", () => <Text>Submitting...</Text>),
+                Match.tag("Success", () => <Text>Submitted successfully!</Text>),
+                Match.tag("Failure", e => <Text>Error: {e.cause.toString()}</Text>),
+                Match.exhaustive,
+            )}
+        </Container>
+    )
+}) {}
+
+const RegisterPage = Component.make("RegisterPageView")(function*() {
+    const RegisterForm = yield* Effect.provide(
+        RegisterFormView.use,
+        yield* Component.useContextFromLayer(RegisterFormService.Default),
+    )
+
+    return <RegisterForm />
+}).pipe(
+    Component.withRuntime(runtime.context)
+)
+
+
+export const Route = createFileRoute("/form")({
+    component: RegisterPage
+})

packages/example/src/routes/index.tsx

@@ -1,20 +1,24 @@
-import { runtime } from "@/runtime"
-import { Todos } from "@/todo/Todos"
-import { TodosState } from "@/todo/TodosState.service"
 import { createFileRoute } from "@tanstack/react-router"
 import { Effect } from "effect"
-import { Component, Hook } from "effect-fc"
+import { Component } from "effect-fc"
+import { runtime } from "@/runtime"
+import { TodosState } from "@/todo/TodosState"
+import { TodosView } from "@/todo/TodosView"
 
 
 const TodosStateLive = TodosState.Default("todos")
 
-export const Route = createFileRoute("/")({
+const Index = Component.make("IndexView")(function*() {
-    component: Component.make(function* Index() {
+    const Todos = yield* Effect.provide(
-        return yield* Todos.pipe(
+        TodosView.use,
-            Effect.map(FC => <FC />),
+        yield* Component.useContextFromLayer(TodosStateLive),
-            Effect.provide(yield* Hook.useContext(TodosStateLive, { finalizerExecutionMode: "fork" })),
-        )
-    }).pipe(
-        Component.withRuntime(runtime.context)
     )
+
+    return <Todos />
+}).pipe(
+    Component.withRuntime(runtime.context)
+)
+
+export const Route = createFileRoute("/")({
+    component: Index
 })

packages/example/src/routes/query.tsx

@@ -0,0 +1,117 @@
+import { HttpClient, type HttpClientError } from "@effect/platform"
+import { Button, Container, Flex, Heading, Slider, Text } from "@radix-ui/themes"
+import { createFileRoute } from "@tanstack/react-router"
+import { Array, Cause, Chunk, Console, Effect, flow, Match, Option, Schema, Stream } from "effect"
+import { Component, ErrorObserver, Mutation, Query, Result, Subscribable, SubscriptionRef } from "effect-fc"
+import { runtime } from "@/runtime"
+
+
+const Post = Schema.Struct({
+    userId: Schema.Int,
+    id: Schema.Int,
+    title: Schema.String,
+    body: Schema.String,
+})
+
+const ResultView = Component.make("ResultView")(function*() {
+    const runPromise = yield* Component.useRunPromise()
+
+    const [idRef, query, mutation] = yield* Component.useOnMount(() => Effect.gen(function*() {
+        const idRef = yield* SubscriptionRef.make(1)
+        const key = Stream.map(idRef.changes, id => [id] as const)
+
+        const query = yield* Query.service({
+            key,
+            f: ([id]) => HttpClient.HttpClient.pipe(
+                Effect.tap(Effect.sleep("500 millis")),
+                Effect.andThen(client => client.get(`https://jsonplaceholder.typicode.com/posts/${ id }`)),
+                Effect.andThen(response => response.json),
+                Effect.andThen(Schema.decodeUnknown(Post)),
+            ),
+            staleTime: "10 seconds",
+        })
+
+        const mutation = yield* Mutation.make({
+            f: ([id]: readonly [id: number]) => HttpClient.HttpClient.pipe(
+                Effect.tap(Effect.sleep("500 millis")),
+                Effect.andThen(client => client.get(`https://jsonplaceholder.typicode.com/posts/${ id }`)),
+                Effect.andThen(response => response.json),
+                Effect.andThen(Schema.decodeUnknown(Post)),
+            ),
+        })
+
+        return [idRef, query, mutation] as const
+    }))
+
+    const [id, setId] = yield* SubscriptionRef.useSubscriptionRefState(idRef)
+    const [queryResult, mutationResult] = yield* Subscribable.useSubscribables([query.result, mutation.result])
+
+    yield* Component.useOnMount(() => ErrorObserver.ErrorObserver<HttpClientError.HttpClientError>().pipe(
+        Effect.andThen(observer => observer.subscribe),
+        Effect.andThen(Stream.fromQueue),
+        Stream.unwrapScoped,
+        Stream.runForEach(flow(
+            Cause.failures,
+            Chunk.findFirst(e => e._tag === "RequestError" || e._tag === "ResponseError"),
+            Option.match({
+                onSome: e => Console.log("ResultView HttpClient error", e),
+                onNone: () => Effect.void,
+            }),
+        )),
+        Effect.forkScoped,
+    ))
+
+    return (
+        <Container>
+            <Flex direction="column" align="center" gap="2">
+                <Slider
+                    value={[id]}
+                    onValueChange={flow(Array.head, Option.getOrThrow, setId)}
+                />
+
+                <div>
+                    {Match.value(queryResult).pipe(
+                        Match.tag("Running", () => <Text>Loading...</Text>),
+                        Match.tag("Success", result => <>
+                            <Heading>{result.value.title}</Heading>
+                            <Text>{result.value.body}</Text>
+                            {Result.hasRefreshingFlag(result) && <Text>Refreshing...</Text>}
+                        </>),
+                        Match.tag("Failure", result =>
+                            <Text>An error has occured: {result.cause.toString()}</Text>
+                        ),
+                        Match.orElse(() => <></>),
+                    )}
+                </div>
+
+                <Flex direction="row" justify="center" align="center" gap="1">
+                    <Button onClick={() => runPromise(query.refresh)}>Refresh</Button>
+                    <Button onClick={() => runPromise(query.invalidateCache)}>Invalidate cache</Button>
+                </Flex>
+
+                <div>
+                    {Match.value(mutationResult).pipe(
+                        Match.tag("Running", () => <Text>Loading...</Text>),
+                        Match.tag("Success", result => <>
+                            <Heading>{result.value.title}</Heading>
+                            <Text>{result.value.body}</Text>
+                            {Result.hasRefreshingFlag(result) && <Text>Refreshing...</Text>}
+                        </>),
+                        Match.tag("Failure", result =>
+                            <Text>An error has occured: {result.cause.toString()}</Text>
+                        ),
+                        Match.orElse(() => <></>),
+                    )}
+                </div>
+
+                <Flex direction="row" justify="center" align="center" gap="1">
+                    <Button onClick={() => runPromise(Effect.andThen(idRef, id => mutation.mutate([id])))}>Mutate</Button>
+                </Flex>
+            </Flex>
+        </Container>
+    )
+})
+
+export const Route = createFileRoute("/query")({
+    component: Component.withRuntime(ResultView, runtime.context)
+})

packages/example/src/routes/result.tsx

@@ -0,0 +1,60 @@
+import { HttpClient, type HttpClientError } from "@effect/platform"
+import { Container, Heading, Text } from "@radix-ui/themes"
+import { createFileRoute } from "@tanstack/react-router"
+import { Cause, Chunk, Console, Effect, flow, Match, Option, Schema, Stream } from "effect"
+import { Component, ErrorObserver, Result, Subscribable } from "effect-fc"
+import { runtime } from "@/runtime"
+
+
+const Post = Schema.Struct({
+    userId: Schema.Int,
+    id: Schema.Int,
+    title: Schema.String,
+    body: Schema.String,
+})
+
+const ResultView = Component.makeUntraced("Result")(function*() {
+    const [resultSubscribable] = yield* Component.useOnMount(() => HttpClient.HttpClient.pipe(
+        Effect.andThen(client => client.get("https://jsonplaceholder.typicode.com/posts/1")),
+        Effect.andThen(response => response.json),
+        Effect.andThen(Schema.decodeUnknown(Post)),
+        Effect.tap(Effect.sleep("250 millis")),
+        Result.forkEffect,
+    ))
+    const [result] = yield* Subscribable.useSubscribables([resultSubscribable])
+
+    yield* Component.useOnMount(() => ErrorObserver.ErrorObserver<HttpClientError.HttpClientError>().pipe(
+        Effect.andThen(observer => observer.subscribe),
+        Effect.andThen(Stream.fromQueue),
+        Stream.unwrapScoped,
+        Stream.runForEach(flow(
+            Cause.failures,
+            Chunk.findFirst(e => e._tag === "RequestError" || e._tag === "ResponseError"),
+            Option.match({
+                onSome: e => Console.log("ResultView HttpClient error", e),
+                onNone: () => Effect.void,
+            }),
+        )),
+        Effect.forkScoped,
+    ))
+
+    return (
+        <Container>
+            {Match.value(result).pipe(
+                Match.tag("Running", () => <Text>Loading...</Text>),
+                Match.tag("Success", result => <>
+                    <Heading>{result.value.title}</Heading>
+                    <Text>{result.value.body}</Text>
+                </>),
+                Match.tag("Failure", result =>
+                    <Text>An error has occured: {result.cause.toString()}</Text>
+                ),
+                Match.orElse(() => <></>),
+            )}
+        </Container>
+    )
+})
+
+export const Route = createFileRoute("/result")({
+    component: Component.withRuntime(ResultView, runtime.context)
+})

packages/example/src/runtime.ts

@@ -1,14 +1,15 @@
 import { FetchHttpClient } from "@effect/platform"
 import { Clipboard, Geolocation, Permissions } from "@effect/platform-browser"
-import { Layer } from "effect"
+import { DateTime, Layer } from "effect"
-import { ReactManagedRuntime } from "effect-fc"
+import { ReactRuntime } from "effect-fc"
 
 
 export const AppLive = Layer.empty.pipe(
+    Layer.provideMerge(DateTime.layerCurrentZoneLocal),
     Layer.provideMerge(Clipboard.layer),
     Layer.provideMerge(Geolocation.layer),
     Layer.provideMerge(Permissions.layer),
     Layer.provideMerge(FetchHttpClient.layer),
 )
 
-export const runtime = ReactManagedRuntime.make(AppLive)
+export const runtime = ReactRuntime.make(AppLive)

packages/example/src/todo/Todo.tsx

@@ -1,115 +0,0 @@
-import * as Domain from "@/domain"
-import { Box, Button, Flex, IconButton, TextArea } from "@radix-ui/themes"
-import { GetRandomValues, makeUuid4 } from "@typed/id"
-import { Chunk, Effect, Match, Option, Ref, Runtime, SubscriptionRef } from "effect"
-import { Component, Hook, Memoized } from "effect-fc"
-import { SubscriptionSubRef } from "effect-fc/types"
-import { FaArrowDown, FaArrowUp } from "react-icons/fa"
-import { FaDeleteLeft } from "react-icons/fa6"
-import { TodosState } from "./TodosState.service"
-
-
-const makeTodo = makeUuid4.pipe(
-    Effect.map(id => Domain.Todo.Todo.make({
-        id,
-        content: "",
-        completedAt: Option.none(),
-    })),
-    Effect.provide(GetRandomValues.CryptoRandom),
-)
-
-
-export type TodoProps = (
-    | { readonly _tag: "new", readonly index?: never }
-    | { readonly _tag: "edit", readonly index: number }
-)
-
-export class Todo extends Component.make(function* Todo(props: TodoProps) {
-    const runtime = yield* Effect.runtime()
-    const state = yield* TodosState
-
-    const [ref, contentRef] = yield* Hook.useMemo(() => Match.value(props).pipe(
-        Match.tag("new", () => Effect.andThen(makeTodo, SubscriptionRef.make)),
-        Match.tag("edit", ({ index }) => Effect.succeed(SubscriptionSubRef.makeFromChunkRef(state.ref, index))),
-        Match.exhaustive,
-
-        Effect.map(ref => [
-            ref,
-            SubscriptionSubRef.makeFromPath(ref, ["content"]),
-        ] as const),
-    ), [props._tag, props.index])
-
-    const [content, size] = yield* Hook.useSubscribeRefs(contentRef, state.sizeRef)
-
-    return (
-        <Flex direction="column" align="stretch" gap="2">
-            <Flex direction="row" align="center" gap="2">
-                <Box flexGrow="1">
-                    <TextArea
-                        value={content}
-                        onChange={e => Runtime.runSync(runtime)(Ref.set(contentRef, e.target.value))}
-                    />
-                </Box>
-
-                {props._tag === "edit" &&
-                    <Flex direction="column" justify="center" align="center" gap="1">
-                        <IconButton
-                            disabled={props.index <= 0}
-                            onClick={() => Runtime.runSync(runtime)(
-                                SubscriptionRef.updateEffect(state.ref, todos => Effect.gen(function*() {
-                                    if (props.index <= 0) return yield* Option.none()
-                                    return todos.pipe(
-                                        Chunk.replace(props.index, yield* Chunk.get(todos, props.index - 1)),
-                                        Chunk.replace(props.index - 1, yield* ref),
-                                    )
-                                }))
-                            )}
-                        >
-                            <FaArrowUp />
-                        </IconButton>
-
-                        <IconButton
-                            disabled={props.index >= size - 1}
-                            onClick={() => Runtime.runSync(runtime)(
-                                SubscriptionRef.updateEffect(state.ref, todos => Effect.gen(function*() {
-                                    if (props.index >= size - 1) return yield* Option.none()
-                                    return todos.pipe(
-                                        Chunk.replace(props.index, yield* Chunk.get(todos, props.index + 1)),
-                                        Chunk.replace(props.index + 1, yield* ref),
-                                    )
-                                }))
-                            )}
-                        >
-                            <FaArrowDown />
-                        </IconButton>
-
-                        <IconButton
-                            onClick={() => Runtime.runSync(runtime)(
-                                Ref.update(state.ref, Chunk.remove(props.index))
-                            )}
-                        >
-                            <FaDeleteLeft />
-                        </IconButton>
-                    </Flex>
-                }
-            </Flex>
-
-            {props._tag === "new" &&
-                <Flex direction="row" justify="center">
-                    <Button
-                        onClick={() => ref.pipe(
-                            Effect.andThen(todo => Ref.update(state.ref, Chunk.prepend(todo))),
-                            Effect.andThen(makeTodo),
-                            Effect.andThen(todo => Ref.set(ref, todo)),
-                            Runtime.runSync(runtime),
-                        )}
-                    >
-                        Add
-                    </Button>
-                </Flex>
-            }
-        </Flex>
-    )
-}).pipe(
-    Memoized.memo
-) {}

packages/example/src/todo/TodoView.tsx

@@ -0,0 +1,135 @@
+import { Box, Button, Flex, IconButton } from "@radix-ui/themes"
+import { GetRandomValues, makeUuid4 } from "@typed/id"
+import { Chunk, type DateTime, Effect, Match, Option, Ref, Schema, Stream } from "effect"
+import { Component, Form, Subscribable } from "effect-fc"
+import { FaArrowDown, FaArrowUp } from "react-icons/fa"
+import { FaDeleteLeft } from "react-icons/fa6"
+import * as Domain from "@/domain"
+import { TextFieldFormInputView } from "@/lib/form/TextFieldFormInputView"
+import { DateTimeUtcFromZonedInput } from "@/lib/schema"
+import { TodosState } from "./TodosState"
+
+
+const TodoFormSchema = Schema.compose(Schema.Struct({
+    ...Domain.Todo.Todo.fields,
+    completedAt: Schema.OptionFromSelf(DateTimeUtcFromZonedInput),
+}), Domain.Todo.Todo)
+
+const makeTodo = makeUuid4.pipe(
+    Effect.map(id => Domain.Todo.Todo.make({
+        id,
+        content: "",
+        completedAt: Option.none(),
+    })),
+    Effect.provide(GetRandomValues.CryptoRandom),
+)
+
+
+export type TodoProps = (
+    | { readonly _tag: "new" }
+    | { readonly _tag: "edit", readonly id: string }
+)
+
+export class TodoView extends Component.make("TodoView")(function*(props: TodoProps) {
+    const state = yield* TodosState
+
+    const [
+        indexRef,
+        form,
+        contentField,
+        completedAtField,
+    ] = yield* Component.useOnChange(() => Effect.gen(function*() {
+        const indexRef = Match.value(props).pipe(
+            Match.tag("new", () => Subscribable.make({ get: Effect.succeed(-1), changes: Stream.make(-1) })),
+            Match.tag("edit", ({ id }) => state.getIndexSubscribable(id)),
+            Match.exhaustive,
+        )
+
+        const form = yield* Form.service({
+            schema: TodoFormSchema,
+            initialEncodedValue: yield* Schema.encode(TodoFormSchema)(
+                yield* Match.value(props).pipe(
+                    Match.tag("new", () => makeTodo),
+                    Match.tag("edit", ({ id }) => state.getElementRef(id)),
+                    Match.exhaustive,
+                )
+            ),
+            f: ([todo, form]) => Match.value(props).pipe(
+                Match.tag("new", () => Ref.update(state.ref, Chunk.prepend(todo)).pipe(
+                    Effect.andThen(makeTodo),
+                    Effect.andThen(Schema.encode(TodoFormSchema)),
+                    Effect.andThen(v => Ref.set(form.encodedValue, v)),
+                )),
+                Match.tag("edit", ({ id }) => Ref.set(state.getElementRef(id), todo)),
+                Match.exhaustive,
+            ),
+            autosubmit: props._tag === "edit",
+            debounce: "250 millis",
+        })
+
+        return [
+            indexRef,
+            form,
+            yield* form.field(["content"]),
+            yield* form.field(["completedAt"]),
+        ] as const
+    }), [props._tag, props._tag === "edit" ? props.id : undefined])
+
+    const [index, size, canSubmit] = yield* Subscribable.useSubscribables([
+        indexRef,
+        state.sizeSubscribable,
+        form.canSubmit,
+    ])
+
+    const runSync = yield* Component.useRunSync()
+    const runPromise = yield* Component.useRunPromise<DateTime.CurrentTimeZone>()
+    const TextFieldFormInput = yield* TextFieldFormInputView.use
+
+
+    return (
+        <Flex direction="row" align="center" gap="2">
+            <Box flexGrow="1">
+                <Flex direction="column" align="stretch" gap="2">
+                    <TextFieldFormInput field={contentField} />
+
+                    <Flex direction="row" justify="center" align="center" gap="2">
+                        <TextFieldFormInput
+                            optional
+                            field={completedAtField}
+                            type="datetime-local"
+                            defaultValue=""
+                        />
+
+                        {props._tag === "new" &&
+                            <Button disabled={!canSubmit} onClick={() => void runPromise(form.submit)}>
+                                Add
+                            </Button>
+                        }
+                    </Flex>
+                </Flex>
+            </Box>
+
+            {props._tag === "edit" &&
+                <Flex direction="column" justify="center" align="center" gap="1">
+                    <IconButton
+                        disabled={index <= 0}
+                        onClick={() => runSync(state.moveLeft(props.id))}
+                    >
+                        <FaArrowUp />
+                    </IconButton>
+
+                    <IconButton
+                        disabled={index >= size - 1}
+                        onClick={() => runSync(state.moveRight(props.id))}
+                    >
+                        <FaArrowDown />
+                    </IconButton>
+
+                    <IconButton onClick={() => runSync(state.remove(props.id))}>
+                        <FaDeleteLeft />
+                    </IconButton>
+                </Flex>
+            }
+        </Flex>
+    )
+}) {}

packages/example/src/todo/Todos.tsx

@@ -1,32 +0,0 @@
-import { Container, Flex, Heading } from "@radix-ui/themes"
-import { Chunk, Console, Effect } from "effect"
-import { Component, Hook } from "effect-fc"
-import { Todo } from "./Todo"
-import { TodosState } from "./TodosState.service"
-
-
-export class Todos extends Component.make(function* Todos() {
-    const state = yield* TodosState
-    const [todos] = yield* Hook.useSubscribeRefs(state.ref)
-
-    yield* Hook.useOnce(() => Effect.andThen(
-        Console.log("Todos mounted"),
-        Effect.addFinalizer(() => Console.log("Todos unmounted")),
-    ))
-
-    const TodoFC = yield* Todo
-
-    return (
-        <Container>
-            <Heading align="center">Todos</Heading>
-
-            <Flex direction="column" align="stretch" gap="2" mt="2">
-                <TodoFC _tag="new" />
-
-                {Chunk.map(todos, (v, k) =>
-                    <TodoFC key={v.id} _tag="edit" index={k} />
-                )}
-            </Flex>
-        </Container>
-    )
-}) {}

packages/example/src/todo/TodosState.service.ts

@@ -1,50 +0,0 @@
-import { Todo } from "@/domain"
-import { KeyValueStore } from "@effect/platform"
-import { BrowserKeyValueStore } from "@effect/platform-browser"
-import { Chunk, Console, Effect, Option, Schema, Stream, SubscriptionRef } from "effect"
-import { SubscriptionSubRef } from "effect-fc/types"
-
-
-export class TodosState extends Effect.Service<TodosState>()("TodosState", {
-    effect: Effect.fn("TodosState")(function*(key: string) {
-        const kv = yield* KeyValueStore.KeyValueStore
-
-        const readFromLocalStorage = Console.log("Reading todos from local storage...").pipe(
-            Effect.andThen(kv.get(key)),
-            Effect.andThen(Option.match({
-                onSome: Schema.decode(
-                    Schema.parseJson(Schema.Chunk(Todo.TodoFromJson))
-                ),
-                onNone: () => Effect.succeed(Chunk.empty()),
-            }))
-        )
-
-        const saveToLocalStorage = (todos: Chunk.Chunk<Todo.Todo>) => Effect.andThen(
-            Console.log("Saving todos to local storage..."),
-            Chunk.isNonEmpty(todos)
-                ? Effect.andThen(
-                    Schema.encode(
-                        Schema.parseJson(Schema.Chunk(Todo.TodoFromJson))
-                    )(todos),
-                    v => kv.set(key, v),
-                )
-                : kv.remove(key)
-        )
-
-        const ref = yield* SubscriptionRef.make(yield* readFromLocalStorage)
-        const sizeRef = SubscriptionSubRef.makeFromPath(ref, ["length"])
-
-        yield* Effect.forkScoped(ref.changes.pipe(
-            Stream.debounce("500 millis"),
-            Stream.runForEach(saveToLocalStorage),
-        ))
-        yield* Effect.addFinalizer(() => ref.pipe(
-            Effect.andThen(saveToLocalStorage),
-            Effect.ignore,
-        ))
-
-        return { ref, sizeRef } as const
-    }),
-
-    dependencies: [BrowserKeyValueStore.layerLocalStorage],
-}) {}

packages/example/src/todo/TodosState.ts

@@ -0,0 +1,94 @@
+import { KeyValueStore } from "@effect/platform"
+import { BrowserKeyValueStore } from "@effect/platform-browser"
+import { Chunk, Console, Effect, Option, Schema, Stream, SubscriptionRef } from "effect"
+import { Subscribable, SubscriptionSubRef } from "effect-fc"
+import { Todo } from "@/domain"
+
+
+export class TodosState extends Effect.Service<TodosState>()("TodosState", {
+    scoped: Effect.fnUntraced(function*(key: string) {
+        const kv = yield* KeyValueStore.KeyValueStore
+
+        const readFromLocalStorage = Console.log("Reading todos from local storage...").pipe(
+            Effect.andThen(kv.get(key)),
+            Effect.andThen(Option.match({
+                onSome: Schema.decode(
+                    Schema.parseJson(Schema.Chunk(Todo.TodoFromJson))
+                ),
+                onNone: () => Effect.succeed(Chunk.empty()),
+            }))
+        )
+        const saveToLocalStorage = (todos: Chunk.Chunk<Todo.Todo>) => Effect.andThen(
+            Console.log("Saving todos to local storage..."),
+            Chunk.isNonEmpty(todos)
+                ? Effect.andThen(
+                    Schema.encode(
+                        Schema.parseJson(Schema.Chunk(Todo.TodoFromJson))
+                    )(todos),
+                    v => kv.set(key, v),
+                )
+                : kv.remove(key)
+        )
+
+        const ref = yield* SubscriptionRef.make(yield* readFromLocalStorage)
+        yield* Effect.forkScoped(ref.changes.pipe(
+            Stream.debounce("500 millis"),
+            Stream.runForEach(saveToLocalStorage),
+        ))
+        yield* Effect.addFinalizer(() => ref.pipe(
+            Effect.andThen(saveToLocalStorage),
+            Effect.ignore,
+        ))
+
+        const sizeSubscribable = Subscribable.make({
+            get: Effect.andThen(ref, Chunk.size),
+            get changes() { return Stream.map(ref.changes, Chunk.size) },
+        })
+        const getElementRef = (id: string) => SubscriptionSubRef.makeFromChunkFindFirst(ref, v => v.id === id)
+        const getIndexSubscribable = (id: string) => Subscribable.make({
+            get: Effect.flatMap(ref, Chunk.findFirstIndex(v => v.id === id)),
+            get changes() { return Stream.flatMap(ref.changes, Chunk.findFirstIndex(v => v.id === id)) },
+        })
+
+        const moveLeft = (id: string) => SubscriptionRef.updateEffect(ref, todos => Effect.Do.pipe(
+            Effect.bind("index", () => Chunk.findFirstIndex(todos, v => v.id === id)),
+            Effect.bind("todo", ({ index }) => Chunk.get(todos, index)),
+            Effect.bind("previous", ({ index }) => Chunk.get(todos, index - 1)),
+            Effect.andThen(({ todo, index, previous }) => index > 0
+                ? todos.pipe(
+                    Chunk.replace(index, previous),
+                    Chunk.replace(index - 1, todo),
+                )
+                : todos
+            ),
+        ))
+        const moveRight = (id: string) => SubscriptionRef.updateEffect(ref, todos => Effect.Do.pipe(
+            Effect.bind("index", () => Chunk.findFirstIndex(todos, v => v.id === id)),
+            Effect.bind("todo", ({ index }) => Chunk.get(todos, index)),
+            Effect.bind("next", ({ index }) => Chunk.get(todos, index + 1)),
+            Effect.andThen(({ todo, index, next }) => index < Chunk.size(todos) - 1
+                ? todos.pipe(
+                    Chunk.replace(index, next),
+                    Chunk.replace(index + 1, todo),
+                )
+                : todos
+            ),
+        ))
+        const remove = (id: string) => SubscriptionRef.updateEffect(ref, todos => Effect.andThen(
+            Chunk.findFirstIndex(todos, v => v.id === id),
+            index => Chunk.remove(todos, index),
+        ))
+
+        return {
+            ref,
+            sizeSubscribable,
+            getElementRef,
+            getIndexSubscribable,
+            moveLeft,
+            moveRight,
+            remove,
+        } as const
+    }),
+
+    dependencies: [BrowserKeyValueStore.layerLocalStorage],
+}) {}

packages/example/src/todo/TodosView.tsx

@@ -0,0 +1,32 @@
+import { Container, Flex, Heading } from "@radix-ui/themes"
+import { Chunk, Console, Effect } from "effect"
+import { Component, Subscribable } from "effect-fc"
+import { TodosState } from "./TodosState"
+import { TodoView } from "./TodoView"
+
+
+export class TodosView extends Component.make("TodosView")(function*() {
+    const state = yield* TodosState
+    const [todos] = yield* Subscribable.useSubscribables([state.ref])
+
+    yield* Component.useOnMount(() => Effect.andThen(
+        Console.log("Todos mounted"),
+        Effect.addFinalizer(() => Console.log("Todos unmounted")),
+    ))
+
+    const Todo = yield* TodoView.use
+
+    return (
+        <Container>
+            <Heading align="center">Todos</Heading>
+
+            <Flex direction="column" align="stretch" gap="2" mt="2">
+                <Todo _tag="new" />
+
+                {Chunk.map(todos, todo =>
+                    <Todo key={todo.id} _tag="edit" id={todo.id} />
+                )}
+            </Flex>
+        </Container>
+    )
+}) {}

packages/example/tsconfig.app.json

@@ -22,15 +22,15 @@
     "noFallthroughCasesInSwitch": true,
     "noUncheckedSideEffectImports": true,
 
+    "baseUrl": ".",
     "paths": {
       "@/*": ["./src/*"]
     },
 
     "plugins": [
-      {
+      { "name": "@effect/language-service" }
-        "name": "@effect/language-service"
-      }
     ]
   },
+
   "include": ["src"]
 }

packages/example/tsconfig.node.json

@@ -20,5 +20,6 @@
     "noFallthroughCasesInSwitch": true,
     "noUncheckedSideEffectImports": true
   },
+
   "include": ["vite.config.ts"]
 }

packages/example/vite.config.ts

@@ -1,4 +1,4 @@
-import { TanStackRouterVite } from "@tanstack/router-plugin/vite"
+import { tanstackRouter } from "@tanstack/router-plugin/vite"
 import react from "@vitejs/plugin-react"
 import path from "node:path"
 import { defineConfig } from "vite"
@@ -7,7 +7,10 @@ import { defineConfig } from "vite"
 // https://vite.dev/config/
 export default defineConfig({
     plugins: [
-        TanStackRouterVite(),
+        tanstackRouter({
+            target: "react",
+            autoCodeSplitting: true,
+        }),
         react(),
     ],
 

renovate.json

@@ -0,0 +1,19 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": ["config:recommended"],
+  "baseBranchPatterns": ["next"],
+  "packageRules": [
+    {
+      "matchManagers": ["bun", "npm"],
+      "matchUpdateTypes": ["minor", "patch"],
+      "groupName": "bun minor+patch updates",
+      "groupSlug": "bun-minor-patch"
+    },
+    {
+      "matchManagers": ["dockerfile", "docker-compose"],
+      "matchUpdateTypes": ["minor", "patch", "digest"],
+      "groupName": "docker minor+patch+digest updates",
+      "groupSlug": "docker-minor-patch-digest"
+    }
+  ]
+}

turbo.json

@@ -1,11 +1,30 @@
 {
   "$schema": "https://turbo.build/schema.json",
+
   "tasks": {
+    "lint:tsc": {
+      "cache": false
+    },
+    "lint:biome": {
+      "cache": false
+    },
     "build": {
       "dependsOn": ["^build"],
       "inputs": ["./src/**"],
       "outputs": ["./dist/**"]
     },
-    "pack": {}
+    "pack": {
+      "dependsOn": ["^pack"],
+      "cache": false
+    },
+    "clean:cache": {
+      "cache": false
+    },
+    "clean:dist": {
+      "cache": false
+    },
+    "clean:modules": {
+      "cache": false
+    }
   }
 }