Rename packages

packages/effect-fc-example/README.md

@@ -0,0 +1,50 @@
+# React + TypeScript + Vite
+
+This template provides a minimal setup to get React working in Vite with HMR and some ESLint rules.
+
+Currently, two official plugins are available:
+
+- [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react/README.md) uses [Babel](https://babeljs.io/) for Fast Refresh
+- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react-swc) uses [SWC](https://swc.rs/) for Fast Refresh
+
+## Expanding the ESLint configuration
+
+If you are developing a production application, we recommend updating the configuration to enable type aware lint rules:
+
+- Configure the top-level `parserOptions` property like this:
+
+```js
+export default tseslint.config({
+  languageOptions: {
+    // other options...
+    parserOptions: {
+      project: ['./tsconfig.node.json', './tsconfig.app.json'],
+      tsconfigRootDir: import.meta.dirname,
+    },
+  },
+})
+```
+
+- Replace `tseslint.configs.recommended` to `tseslint.configs.recommendedTypeChecked` or `tseslint.configs.strictTypeChecked`
+- Optionally add `...tseslint.configs.stylisticTypeChecked`
+- Install [eslint-plugin-react](https://github.com/jsx-eslint/eslint-plugin-react) and update the config:
+
+```js
+// eslint.config.js
+import react from 'eslint-plugin-react'
+
+export default tseslint.config({
+  // Set the react version
+  settings: { react: { version: '18.3' } },
+  plugins: {
+    // Add the react plugin
+    react,
+  },
+  rules: {
+    // other rules...
+    // Enable its recommended rules
+    ...react.configs.recommended.rules,
+    ...react.configs['jsx-runtime'].rules,
+  },
+})
+```

packages/effect-fc-example/package.json

@@ -1,10 +1,9 @@
 {
-  "name": "@effect-fc/example-next",
+  "name": "@effect-fc/example",
   "version": "0.0.0",
   "type": "module",
   "private": true,
   "scripts": {
-    "build": "tsc -b && vite build",
     "dev": "vite",
     "lint:tsc": "tsc -b --noEmit",
     "lint:biome": "biome lint",
@@ -14,7 +13,6 @@
     "clean:modules": "rm -rf node_modules"
   },
   "devDependencies": {
-    "@effect-view/vite-plugin": "workspace:*",
     "@tanstack/react-router": "^1.170.10",
     "@tanstack/react-router-devtools": "^1.167.0",
     "@tanstack/router-plugin": "^1.168.13",
@@ -24,18 +22,21 @@
     "globals": "^17.6.0",
     "react": "^19.2.6",
     "react-dom": "^19.2.6",
+    "type-fest": "^5.7.0",
     "vite": "^8.0.16"
   },
   "dependencies": {
-    "@effect/platform-browser": "4.0.0-beta.98",
+    "@effect/platform": "^0.96.1",
+    "@effect/platform-browser": "^0.76.0",
     "@radix-ui/themes": "^3.3.0",
-    "effect": "4.0.0-beta.98",
-    "effect-fc-next": "workspace:*",
+    "@typed/id": "^0.17.2",
+    "effect": "^3.21.2",
+    "effect-fc": "workspace:*",
     "react-icons": "^5.6.0"
   },
   "overrides": {
     "@types/react": "^19.2.15",
-    "effect": "4.0.0-beta.98",
+    "effect": "^3.21.2",
     "react": "^19.2.6"
   }
 }

packages/effect-fc-example/src/lib/form/TextFieldFormInputView.tsx

@@ -1,6 +1,6 @@
 import { Callout, Flex, Spinner, TextField } from "@radix-ui/themes"
 import { Array, Option, Struct } from "effect"
-import { Component, Form, View } from "effect-fc-next"
+import { Component, Form, Subscribable } from "effect-fc"
 import type * as React from "react"
 
 
@@ -17,7 +17,7 @@ export const TextFieldFormInputView = Component.make("TextFieldFormInputView")(f
     props: TextFieldFormInputView.Props<readonly PropertyKey[], any, any, any>
 ) {
     const input = yield* Form.useInput(props.form, props)
-    const [issues, isValidating, isCommitting] = yield* View.useAll([
+    const [issues, isValidating, isCommitting] = yield* Subscribable.useAll([
         props.form.issues,
         props.form.isValidating,
         props.form.isCommitting,
@@ -29,7 +29,7 @@ export const TextFieldFormInputView = Component.make("TextFieldFormInputView")(f
                 value={input.value}
                 onChange={e => input.setValue(e.target.value)}
                 disabled={isCommitting}
-                {...Struct.omit(props, ["form"])}
+                {...Struct.omit(props, "form")}
             >
                 {isValidating &&
                     <TextField.Slot side="right">

packages/effect-fc-example/src/lib/form/TextFieldOptionalFormInputView.tsx

@@ -1,6 +1,6 @@
 import { Callout, Flex, Spinner, Switch, TextField } from "@radix-ui/themes"
 import { Array, Option, Struct } from "effect"
-import { Component, Form, View } from "effect-fc-next"
+import { Component, Form, Subscribable } from "effect-fc"
 import type * as React from "react"
 
 
@@ -17,7 +17,7 @@ export const TextFieldOptionalFormInputView = Component.make("TextFieldOptionalF
     props: TextFieldOptionalFormInputView.Props<readonly PropertyKey[], any, any, any>
 ) {
     const input = yield* Form.useOptionalInput(props.form, props)
-    const [issues, isValidating, isCommitting] = yield* View.useAll([
+    const [issues, isValidating, isCommitting] = yield* Subscribable.useAll([
         props.form.issues,
         props.form.isValidating,
         props.form.isCommitting,
@@ -29,7 +29,7 @@ export const TextFieldOptionalFormInputView = Component.make("TextFieldOptionalF
                 value={input.value}
                 onChange={e => input.setValue(e.target.value)}
                 disabled={!input.enabled || isCommitting}
-                {...Struct.omit(props, ["form", "defaultValue"])}
+                {...Struct.omit(props, "form", "defaultValue")}
             >
                 <TextField.Slot side="left">
                     <Switch

packages/effect-fc-example/src/main.tsx

@@ -1,21 +1,24 @@
 import { createRouter, RouterProvider } from "@tanstack/react-router"
-import { ReactRuntime } from "effect-fc-next"
+import { ReactRuntime } from "effect-fc"
 import { StrictMode } from "react"
 import { createRoot } from "react-dom/client"
 import { routeTree } from "./routeTree.gen"
 import { runtime } from "./runtime"
 
+
 const router = createRouter({ routeTree })
 
 declare module "@tanstack/react-router" {
-    interface Register { router: typeof router }
+    interface Register {
+        router: typeof router
+    }
 }
 
-// biome-ignore lint/style/noNonNullAssertion: the Vite template provides this element
+// biome-ignore lint/style/noNonNullAssertion: React entrypoint
 createRoot(document.getElementById("root")!).render(
     <StrictMode>
         <ReactRuntime.Provider runtime={runtime}>
             <RouterProvider router={router} />
         </ReactRuntime.Provider>
-    </StrictMode>,
+    </StrictMode>
 )

packages/effect-fc-example/src/routeTree.gen.ts

@@ -9,26 +9,23 @@
 // 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 IndexRouteImport } from './routes/index'
-import { Route as AsyncRouteImport } from './routes/async'
-import { Route as BlankRouteImport } from './routes/blank'
-import { Route as FormRouteImport } from './routes/form'
-import { Route as LensformRouteImport } from './routes/lensform'
+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 AsyncRouteImport } from './routes/async'
+import { Route as IndexRouteImport } from './routes/index'
+import { Route as DevMemoRouteImport } from './routes/dev/memo'
+import { Route as DevContextRouteImport } from './routes/dev/context'
 
-const IndexRoute = IndexRouteImport.update({
-  id: '/',
-  path: '/',
+const ResultRoute = ResultRouteImport.update({
+  id: '/result',
+  path: '/result',
   getParentRoute: () => rootRouteImport,
 } as any)
-const AsyncRoute = AsyncRouteImport.update({
-  id: '/async',
-  path: '/async',
-  getParentRoute: () => rootRouteImport,
-} as any)
-const BlankRoute = BlankRouteImport.update({
-  id: '/blank',
-  path: '/blank',
+const QueryRoute = QueryRouteImport.update({
+  id: '/query',
+  path: '/query',
   getParentRoute: () => rootRouteImport,
 } as any)
 const FormRoute = FormRouteImport.update({
@@ -36,14 +33,29 @@ const FormRoute = FormRouteImport.update({
   path: '/form',
   getParentRoute: () => rootRouteImport,
 } as any)
-const LensformRoute = LensformRouteImport.update({
-  id: '/lensform',
-  path: '/lensform',
+const BlankRoute = BlankRouteImport.update({
+  id: '/blank',
+  path: '/blank',
   getParentRoute: () => rootRouteImport,
 } as any)
-const QueryRoute = QueryRouteImport.update({
-  id: '/query',
-  path: '/query',
+const AsyncRoute = AsyncRouteImport.update({
+  id: '/async',
+  path: '/async',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const IndexRoute = IndexRouteImport.update({
+  id: '/',
+  path: '/',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const DevMemoRoute = DevMemoRouteImport.update({
+  id: '/dev/memo',
+  path: '/dev/memo',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const DevContextRoute = DevContextRouteImport.update({
+  id: '/dev/context',
+  path: '/dev/context',
   getParentRoute: () => rootRouteImport,
 } as any)
 
@@ -52,16 +64,20 @@ export interface FileRoutesByFullPath {
   '/async': typeof AsyncRoute
   '/blank': typeof BlankRoute
   '/form': typeof FormRoute
-  '/lensform': typeof LensformRoute
   '/query': typeof QueryRoute
+  '/result': typeof ResultRoute
+  '/dev/context': typeof DevContextRoute
+  '/dev/memo': typeof DevMemoRoute
 }
 export interface FileRoutesByTo {
   '/': typeof IndexRoute
   '/async': typeof AsyncRoute
   '/blank': typeof BlankRoute
   '/form': typeof FormRoute
-  '/lensform': typeof LensformRoute
   '/query': typeof QueryRoute
+  '/result': typeof ResultRoute
+  '/dev/context': typeof DevContextRoute
+  '/dev/memo': typeof DevMemoRoute
 }
 export interface FileRoutesById {
   __root__: typeof rootRouteImport
@@ -69,15 +85,42 @@ export interface FileRoutesById {
   '/async': typeof AsyncRoute
   '/blank': typeof BlankRoute
   '/form': typeof FormRoute
-  '/lensform': typeof LensformRoute
   '/query': typeof QueryRoute
+  '/result': typeof ResultRoute
+  '/dev/context': typeof DevContextRoute
+  '/dev/memo': typeof DevMemoRoute
 }
 export interface FileRouteTypes {
   fileRoutesByFullPath: FileRoutesByFullPath
-  fullPaths: '/' | '/async' | '/blank' | '/form' | '/lensform' | '/query'
+  fullPaths:
+    | '/'
+    | '/async'
+    | '/blank'
+    | '/form'
+    | '/query'
+    | '/result'
+    | '/dev/context'
+    | '/dev/memo'
   fileRoutesByTo: FileRoutesByTo
-  to: '/' | '/async' | '/blank' | '/form' | '/lensform' | '/query'
-  id: '__root__' | '/' | '/async' | '/blank' | '/form' | '/lensform' | '/query'
+  to:
+    | '/'
+    | '/async'
+    | '/blank'
+    | '/form'
+    | '/query'
+    | '/result'
+    | '/dev/context'
+    | '/dev/memo'
+  id:
+    | '__root__'
+    | '/'
+    | '/async'
+    | '/blank'
+    | '/form'
+    | '/query'
+    | '/result'
+    | '/dev/context'
+    | '/dev/memo'
   fileRoutesById: FileRoutesById
 }
 export interface RootRouteChildren {
@@ -85,31 +128,26 @@ export interface RootRouteChildren {
   AsyncRoute: typeof AsyncRoute
   BlankRoute: typeof BlankRoute
   FormRoute: typeof FormRoute
-  LensformRoute: typeof LensformRoute
   QueryRoute: typeof QueryRoute
+  ResultRoute: typeof ResultRoute
+  DevContextRoute: typeof DevContextRoute
+  DevMemoRoute: typeof DevMemoRoute
 }
 
 declare module '@tanstack/react-router' {
   interface FileRoutesByPath {
-    '/': {
-      id: '/'
-      path: '/'
-      fullPath: '/'
-      preLoaderRoute: typeof IndexRouteImport
+    '/result': {
+      id: '/result'
+      path: '/result'
+      fullPath: '/result'
+      preLoaderRoute: typeof ResultRouteImport
       parentRoute: typeof rootRouteImport
     }
-    '/async': {
-      id: '/async'
-      path: '/async'
-      fullPath: '/async'
-      preLoaderRoute: typeof AsyncRouteImport
-      parentRoute: typeof rootRouteImport
-    }
-    '/blank': {
-      id: '/blank'
-      path: '/blank'
-      fullPath: '/blank'
-      preLoaderRoute: typeof BlankRouteImport
+    '/query': {
+      id: '/query'
+      path: '/query'
+      fullPath: '/query'
+      preLoaderRoute: typeof QueryRouteImport
       parentRoute: typeof rootRouteImport
     }
     '/form': {
@@ -119,18 +157,39 @@ declare module '@tanstack/react-router' {
       preLoaderRoute: typeof FormRouteImport
       parentRoute: typeof rootRouteImport
     }
-    '/lensform': {
-      id: '/lensform'
-      path: '/lensform'
-      fullPath: '/lensform'
-      preLoaderRoute: typeof LensformRouteImport
+    '/blank': {
+      id: '/blank'
+      path: '/blank'
+      fullPath: '/blank'
+      preLoaderRoute: typeof BlankRouteImport
       parentRoute: typeof rootRouteImport
     }
-    '/query': {
-      id: '/query'
-      path: '/query'
-      fullPath: '/query'
-      preLoaderRoute: typeof QueryRouteImport
+    '/async': {
+      id: '/async'
+      path: '/async'
+      fullPath: '/async'
+      preLoaderRoute: typeof AsyncRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/': {
+      id: '/'
+      path: '/'
+      fullPath: '/'
+      preLoaderRoute: typeof IndexRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/dev/memo': {
+      id: '/dev/memo'
+      path: '/dev/memo'
+      fullPath: '/dev/memo'
+      preLoaderRoute: typeof DevMemoRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/dev/context': {
+      id: '/dev/context'
+      path: '/dev/context'
+      fullPath: '/dev/context'
+      preLoaderRoute: typeof DevContextRouteImport
       parentRoute: typeof rootRouteImport
     }
   }
@@ -141,8 +200,10 @@ const rootRouteChildren: RootRouteChildren = {
   AsyncRoute: AsyncRoute,
   BlankRoute: BlankRoute,
   FormRoute: FormRoute,
-  LensformRoute: LensformRoute,
   QueryRoute: QueryRoute,
+  ResultRoute: ResultRoute,
+  DevContextRoute: DevContextRoute,
+  DevMemoRoute: DevMemoRoute,
 }
 export const routeTree = rootRouteImport
   ._addFileChildren(rootRouteChildren)

packages/effect-fc-example/src/routes/__root.tsx

@@ -7,7 +7,7 @@ import "../index.css"
 
 
 export const Route = createRootRoute({
-    component: Root,
+    component: Root
 })
 
 function Root() {
@@ -17,10 +17,6 @@ function Root() {
                 <Flex direction="row" justify="center" align="center" gap="2">
                     <Link to="/">Index</Link>
                     <Link to="/blank">Blank</Link>
-                    <Link to="/async">Async</Link>
-                    <Link to="/query">Query</Link>
-                    <Link to="/form">Form</Link>
-                    <Link to="/lensform">LensForm</Link>
                 </Flex>
             </Container>
 

packages/effect-fc-example/src/routes/async.tsx

@@ -1,35 +1,30 @@
+import { HttpClient } from "@effect/platform"
 import { Container, Flex, Heading, Slider, Text, TextField } from "@radix-ui/themes"
 import { createFileRoute } from "@tanstack/react-router"
-import { Console, Effect } from "effect"
-import { Async, Component, Memoized } from "effect-fc-next"
+import { Array, Effect, flow, Option, Schema } from "effect"
+import { Async, Component, Memoized } from "effect-fc"
 import * as React from "react"
 import { runtime } from "@/runtime"
 
 
-const fetchPost = (id: number) => Effect.sleep("500 millis").pipe(
-    Effect.as({
-        title: `Post ${id}`,
-        body: `This is the content of post ${id}.`,
-    }),
-)
-
+const Post = Schema.Struct({
+    userId: Schema.Int,
+    id: Schema.Int,
+    title: Schema.String,
+    body: Schema.String,
+})
 
 interface AsyncFetchPostViewProps {
     readonly id: number
 }
 
-const AsyncFetchPostView = Component.make("AsyncFetchPostView")(function*(
-    props: AsyncFetchPostViewProps,
-) {
-    yield* Component.useOnMount(() => Effect.gen(function*() {
-        yield* Effect.addFinalizer(() => Console.log("AsyncFetchPostView unmounted"))
-        yield* Console.log("AsyncFetchPostView mounted")
-    }))
-
-    const post = yield* Component.useOnChange(
-        () => fetchPost(props.id),
-        [props.id],
-    )
+class AsyncFetchPostView extends Component.make("AsyncFetchPostView")(function*(props: AsyncFetchPostViewProps) {
+    const post = yield* Component.useOnChange(() => HttpClient.HttpClient.pipe(
+        Effect.tap(Effect.sleep("500 millis")),
+        Effect.andThen(client => client.get(`https://jsonplaceholder.typicode.com/posts/${ props.id }`)),
+        Effect.andThen(response => response.json),
+        Effect.andThen(Schema.decodeUnknown(Post)),
+    ), [props.id])
 
     return (
         <div>
@@ -39,9 +34,10 @@ const AsyncFetchPostView = Component.make("AsyncFetchPostView")(function*(
     )
 }).pipe(
     Async.async,
-    Async.withOptions({ defaultFallback: <Text>Loading post...</Text> }),
+    Async.withOptions({ defaultFallback: <Text>Default fallback</Text> }),
     Memoized.memoized,
-)
+) {}
+
 
 const AsyncRouteComponent = Component.make("AsyncRouteView")(function*() {
     const [text, setText] = React.useState("Typing here should not trigger a refetch of the post")
@@ -54,22 +50,20 @@ const AsyncRouteComponent = Component.make("AsyncRouteView")(function*() {
             <Flex direction="column" align="stretch" gap="2">
                 <TextField.Root
                     value={text}
-                    onChange={event => setText(event.currentTarget.value)}
+                    onChange={e => setText(e.currentTarget.value)}
                 />
 
                 <Slider
                     value={[id]}
-                    min={1}
-                    max={10}
-                    onValueChange={([value]) => setId(value ?? 1)}
+                    onValueChange={flow(Array.head, Option.getOrThrow, setId)}
                 />
 
-                <AsyncFetchPost id={id} />
+                <AsyncFetchPost id={id} fallback={<Text>Loading post...</Text>} />
             </Flex>
         </Container>
     )
 }).pipe(
-    Component.withContext(runtime.context),
+    Component.withRuntime(runtime.context)
 )
 
 export const Route = createFileRoute("/async")({

packages/effect-fc-example/src/routes/form.tsx

@@ -0,0 +1,143 @@
+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, SubmittableForm, Subscribable } from "effect-fc"
+import { TextFieldFormInputView } from "@/lib/form/TextFieldFormInputView"
+import { TextFieldOptionalFormInputView } from "@/lib/form/TextFieldOptionalFormInputView"
+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: Effect.gen(function*() {
+        const form = yield* SubmittableForm.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)
+            }),
+        })
+
+        return {
+            form,
+            emailField: Form.focusObjectOn(form, "email"),
+            passwordField: Form.focusObjectOn(form, "password"),
+            birthField: Form.focusObjectOn(form, "birth"),
+        } as const
+    })
+}) {}
+
+class RegisterFormView extends Component.make("RegisterFormView")(function*() {
+    const form = yield* RegisterFormService
+    const [canCommit, submitResult] = yield* Subscribable.useAll([
+        form.form.canCommit,
+        form.form.mutation.result,
+    ])
+
+    const runPromise = yield* Component.useRunPromise()
+    const TextFieldFormInput = yield* TextFieldFormInputView.use
+    const TextFieldOptionalFormInput = yield* TextFieldOptionalFormInputView.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.form.submit)
+            }}>
+                <Flex direction="column" gap="2">
+                    <TextFieldFormInput
+                        form={form.emailField}
+                        debounce="250 millis"
+                    />
+
+                    <TextFieldFormInput
+                        form={form.passwordField}
+                        debounce="250 millis"
+                    />
+
+                    <TextFieldOptionalFormInput
+                        type="datetime-local"
+                        form={form.birthField}
+                        defaultValue=""
+                    />
+
+                    <Button disabled={!canCommit}>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.useLayer(RegisterFormService.Default),
+    )
+
+    return <RegisterForm />
+}).pipe(
+    Component.withRuntime(runtime.context)
+)
+
+
+export const Route = createFileRoute("/form")({
+    component: RegisterPage
+})

packages/effect-fc-example/src/routes/index.tsx

@@ -0,0 +1,24 @@
+import { createFileRoute } from "@tanstack/react-router"
+import { Effect } from "effect"
+import { Component } from "effect-fc"
+import { runtime } from "@/runtime"
+import { TodosState } from "@/todo/TodosState"
+import { TodosView } from "@/todo/TodosView"
+
+
+const TodosStateLive = TodosState.Default("todos")
+
+const Index = Component.make("IndexView")(function*() {
+    const Todos = yield* Effect.provide(
+        TodosView.use,
+        yield* Component.useLayer(TodosStateLive),
+    )
+
+    return <Todos />
+}).pipe(
+    Component.withRuntime(runtime.context)
+)
+
+export const Route = createFileRoute("/")({
+    component: Index
+})

packages/effect-fc-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, SubscriptionRef } from "effect"
+import { Component, ErrorObserver, Lens, Mutation, Query, 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.make("ResultView")(function*() {
+    const runPromise = yield* Component.useRunPromise()
+
+    const [idLens, query, mutation] = yield* Component.useOnMount(() => Effect.gen(function*() {
+        const idLens = Lens.fromSubscriptionRef(yield* SubscriptionRef.make(1))
+        const key = Stream.map(idLens.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 [idLens, query, mutation] as const
+    }))
+
+    const [id, setId] = yield* Lens.useState(idLens)
+    const [queryResult, mutationResult] = yield* Subscribable.useAll([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(Lens.get(idLens), id => mutation.mutate([id])))}>Mutate</Button>
+                </Flex>
+            </Flex>
+        </Container>
+    )
+})
+
+export const Route = createFileRoute("/query")({
+    component: Component.withRuntime(ResultView, runtime.context)
+})

packages/effect-fc-example/src/runtime.ts

@@ -1,11 +1,10 @@
+import { FetchHttpClient } from "@effect/platform"
 import { Clipboard, Geolocation, Permissions } from "@effect/platform-browser"
 import { DateTime, Layer } from "effect"
-import { FetchHttpClient } from "effect/unstable/http"
-import { QueryClient, ReactRuntime } from "effect-fc-next"
+import { ReactRuntime } from "effect-fc"
 
 
-export const layer = Layer.empty.pipe(
-    Layer.provideMerge(QueryClient.layer()),
+export const AppLive = Layer.empty.pipe(
     Layer.provideMerge(DateTime.layerCurrentZoneLocal),
     Layer.provideMerge(Clipboard.layer),
     Layer.provideMerge(Geolocation.layer),
@@ -13,4 +12,4 @@ export const layer = Layer.empty.pipe(
     Layer.provideMerge(FetchHttpClient.layer),
 )
 
-export const runtime = ReactRuntime.make(layer)
+export const runtime = ReactRuntime.make(AppLive)

packages/effect-fc-example/vite.config.ts

@@ -1,6 +1,5 @@
 import { tanstackRouter } from "@tanstack/router-plugin/vite"
 import react from "@vitejs/plugin-react"
-import { effectViewPlugin } from "@effect-view/vite-plugin"
 import path from "node:path"
 import { defineConfig } from "vite"
 
@@ -8,7 +7,6 @@ import { defineConfig } from "vite"
 // https://vite.dev/config/
 export default defineConfig({
     plugins: [
-        effectViewPlugin(),
         tanstackRouter({
             target: "react",
             autoCodeSplitting: true,

packages/effect-view/package.json

@@ -1,7 +1,7 @@
 {
-  "name": "effect-fc-next",
+  "name": "effect-view",
   "description": "Write React function components with Effect",
-  "version": "0.1.0-beta.0",
+  "version": "0.1.0",
   "type": "module",
   "files": [
     "./README.md",

packages/example-next/README.md

@@ -1,10 +0,0 @@
-# Effect FC Next Example
-
-Minimal React example for `effect-fc-next`, Effect V4, and `effect-lens@2`.
-
-```bash
-bun run dev
-```
-
-The counter demonstrates a V4 `SubscriptionRef` exposed as an Effect Lens and
-rendered through an Effect-FC component.

packages/example-next/src/routes/form.tsx

@@ -1,82 +0,0 @@
-import { Button, Container, Flex, Text } from "@radix-ui/themes"
-import { createFileRoute } from "@tanstack/react-router"
-import { Console, Effect, Schema } from "effect"
-import { Component, Form, MutationForm, View } from "effect-fc-next"
-import { TextFieldFormInputView } from "@/lib/form/TextFieldFormInputView"
-import { runtime } from "@/runtime"
-
-
-const RegisterSchema = Schema.Struct({
-    email: Schema.String.check(
-        Schema.isPattern(/^[^\s@]+@[^\s@]+\.[^\s@]+$/, {
-            message: "Enter a valid email address",
-        }),
-    ),
-    password: Schema.String.check(
-        Schema.isMinLength(5, {
-            message: "Password must be at least 5 characters long",
-        }),
-    ),
-})
-
-const RegisterRouteComponent = Component.make("RegisterRouteView")(function*() {
-    yield* Component.useOnMount(() => Effect.gen(function*() {
-        yield* Effect.addFinalizer(() => Console.log("Form route unmounted"))
-        yield* Console.log("Form route mounted")
-    }))
-
-    const [form, emailField, passwordField] = yield* Component.useOnMount(() => Effect.gen(function*() {
-        const form = yield* MutationForm.service({
-            schema: RegisterSchema,
-            initialEncodedValue: { email: "", password: "" },
-            f: ([value]) => Effect.log(`Registered ${value.email}`),
-        })
-
-        const emailField = Form.focusObjectOn(form, "email")
-        const passwordField = Form.focusObjectOn(form, "password")
-
-        return [form, emailField, passwordField] as const
-    }))
-
-    const [canCommit, isCommitting] = yield* View.useAll([
-        form.canCommit,
-        form.isCommitting,
-    ])
-
-    const TextFieldFormInput = yield* TextFieldFormInputView.use
-    const runPromise = yield* Component.useRunPromise()
-
-
-    return (
-        <Container width="300">
-            <form onSubmit={event => {
-                event.preventDefault()
-                void runPromise(form.submit)
-            }}>
-                <Flex direction="column" gap="2">
-                    <TextFieldFormInput
-                        form={emailField}
-                        placeholder="Email"
-                        debounce="250 millis"
-                    />
-                    <TextFieldFormInput
-                        form={passwordField}
-                        placeholder="Password"
-                        type="password"
-                        debounce="250 millis"
-                    />
-                    <Button disabled={!canCommit || isCommitting}>
-                        {isCommitting ? "Submitting…" : "Submit"}
-                    </Button>
-                </Flex>
-            </form>
-            <Text size="2">A MutationForm validates local input, then submits it.</Text>
-        </Container>
-    )
-}).pipe(
-    Component.withContext(runtime.context),
-)
-
-export const Route = createFileRoute("/form")({
-    component: RegisterRouteComponent,
-})

packages/example-next/src/routes/index.tsx

@@ -1,56 +0,0 @@
-import { Button, Container, Flex, Text, TextField } from "@radix-ui/themes"
-import { createFileRoute } from "@tanstack/react-router"
-import { Effect, SubscriptionRef } from "effect"
-import { Component, Lens, View } from "effect-fc-next"
-import { runtime } from "@/runtime"
-
-
-const TodoRouteComponent = Component.make("TodoRouteView")(function*() {
-    const todosLens = yield* Component.useOnMount(() => Effect.map(
-        SubscriptionRef.make<readonly string[]>([]),
-        Lens.fromSubscriptionRef,
-    ))
-    const draftLens = yield* Component.useOnMount(() => Effect.map(
-        SubscriptionRef.make(""),
-        Lens.fromSubscriptionRef,
-    ))
-
-    const [todos] = yield* View.useAll([todosLens])
-    const [draft, setDraft] = yield* Lens.useState(draftLens)
-    const runPromise = yield* Component.useRunPromise()
-
-    const addTodo = Lens.update(todosLens, todos =>
-        draft.trim() === ""
-            ? todos
-            : [...todos, draft.trim()],
-    ).pipe(
-        Effect.andThen(Lens.set(draftLens, "")),
-    )
-
-    return (
-        <Container width="480">
-            <Flex direction="column" gap="3">
-                <Text size="2">A small Effect v4 todo state example backed by a Lens.</Text>
-
-                <Flex gap="2">
-                    <TextField.Root
-                        value={draft}
-                        onChange={event => setDraft(event.currentTarget.value)}
-                    />
-
-                    <Button onClick={() => void runPromise(addTodo)}>
-                        Add
-                    </Button>
-                </Flex>
-
-                {todos.map(todo => <Text key={todo}>• {todo}</Text>)}
-            </Flex>
-        </Container>
-    )
-}).pipe(
-    Component.withContext(runtime.context),
-)
-
-export const Route = createFileRoute("/")({
-    component: TodoRouteComponent,
-})

packages/example-next/src/routes/query.tsx

@@ -1,102 +0,0 @@
-import { Button, Container, Flex, Heading, Slider, Text } from "@radix-ui/themes"
-import { createFileRoute } from "@tanstack/react-router"
-import { Effect, Schema, SubscriptionRef } from "effect"
-import { HttpClient } from "effect/unstable/http"
-import { AsyncResult } from "effect/unstable/reactivity"
-import { Component, Lens, Mutation, Query, View } from "effect-fc-next"
-import { runtime } from "@/runtime"
-
-
-const Post = Schema.Struct({
-    userId: Schema.Int,
-    id: Schema.Int,
-    title: Schema.String,
-    body: Schema.String,
-})
-
-
-interface PostResultViewProps {
-    readonly result: AsyncResult.AsyncResult<typeof Post.Type, Error>
-}
-
-const PostResultView = (props: PostResultViewProps) => AsyncResult.match(props.result, {
-    onInitial: result => result.waiting
-        ? <Text>Loading...</Text>
-        : <Text>No data.</Text>,
-    onFailure: result => <Text>Request failed: { result.cause.toString() }</Text>,
-    onSuccess: result => <>
-        {result.waiting && <Text>Refreshing...</Text>}
-        <Heading>{result.value.title}</Heading>
-        <Text>{result.value.body}</Text>
-    </>,
-})
-
-const QueryRouteComponent = Component.make("QueryRouteView")(function*() {
-    const [idLens, query, mutation] = yield* Component.useOnMount(() => Effect.gen(function*() {
-        const keyLens = Lens.fromSubscriptionRef(yield* SubscriptionRef.make(["post", 1 as number] as const))
-        const idLens = Lens.focusTupleAt(keyLens, 1)
-
-        const query = yield* Query.service({
-            key: keyLens,
-            f: ([, id]) => HttpClient.HttpClient.pipe(
-                Effect.tap(Effect.sleep("1 second")),
-                Effect.andThen(client => client.get(`https://jsonplaceholder.typicode.com/posts/${ id }`)),
-                Effect.andThen(response => response.json),
-                Effect.andThen(Schema.decodeUnknownEffect(Post)),
-            ),
-            staleTime: "10 seconds",
-        })
-
-        const mutation = yield* Mutation.make({
-            f: ([id]: [id: number]) => HttpClient.HttpClient.pipe(
-                Effect.tap(Effect.sleep("1 second")),
-                Effect.andThen(client => client.get(`https://jsonplaceholder.typicode.com/posts/${ id }`)),
-                Effect.andThen(response => response.json),
-                Effect.andThen(Schema.decodeUnknownEffect(Post)),
-            ),
-        })
-
-        return [idLens, query, mutation] as const
-    }))
-
-    const [id, setId] = yield* Lens.useState(idLens)
-    const [queryState, mutationState] = yield* View.useAll([query.state, mutation.state])
-
-    const runSync = yield* Component.useRunSync()
-
-    return (
-        <Container>
-            <Flex direction="column" align="center" gap="2">
-                <Slider
-                    value={[id]}
-                    min={1}
-                    max={10}
-                    onValueChange={([value]) => setId(value ?? 1)}
-                />
-
-                <PostResultView result={queryState.result} />
-
-                <Flex direction="row" justify="center" align="center" gap="1">
-                    <Button onClick={() => runSync(query.refreshView)}>
-                        Refresh
-                    </Button>
-                    <Button onClick={() => runSync(query.invalidateCache)}>
-                        Invalidate cache
-                    </Button>
-                </Flex>
-
-                <PostResultView result={mutationState} />
-
-                <Button onClick={() => runSync(mutation.mutateView([id]))}>
-                    Mutate
-                </Button>
-            </Flex>
-        </Container>
-    )
-}).pipe(
-    Component.withContext(runtime.context),
-)
-
-export const Route = createFileRoute("/query")({
-    component: QueryRouteComponent,
-})

packages/example/README.md

@@ -1,50 +1,10 @@
-# React + TypeScript + Vite
+# Effect FC Next Example
 
-This template provides a minimal setup to get React working in Vite with HMR and some ESLint rules.
+Minimal React example for `effect-fc-next`, Effect V4, and `effect-lens@2`.
 
-Currently, two official plugins are available:
-
-- [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react/README.md) uses [Babel](https://babeljs.io/) for Fast Refresh
-- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react-swc) uses [SWC](https://swc.rs/) for Fast Refresh
-
-## Expanding the ESLint configuration
-
-If you are developing a production application, we recommend updating the configuration to enable type aware lint rules:
-
-- Configure the top-level `parserOptions` property like this:
-
-```js
-export default tseslint.config({
-  languageOptions: {
-    // other options...
-    parserOptions: {
-      project: ['./tsconfig.node.json', './tsconfig.app.json'],
-      tsconfigRootDir: import.meta.dirname,
-    },
-  },
-})
+```bash
+bun run dev
 ```
 
-- Replace `tseslint.configs.recommended` to `tseslint.configs.recommendedTypeChecked` or `tseslint.configs.strictTypeChecked`
-- Optionally add `...tseslint.configs.stylisticTypeChecked`
-- Install [eslint-plugin-react](https://github.com/jsx-eslint/eslint-plugin-react) and update the config:
-
-```js
-// eslint.config.js
-import react from 'eslint-plugin-react'
-
-export default tseslint.config({
-  // Set the react version
-  settings: { react: { version: '18.3' } },
-  plugins: {
-    // Add the react plugin
-    react,
-  },
-  rules: {
-    // other rules...
-    // Enable its recommended rules
-    ...react.configs.recommended.rules,
-    ...react.configs['jsx-runtime'].rules,
-  },
-})
-```
+The counter demonstrates a V4 `SubscriptionRef` exposed as an Effect Lens and
+rendered through an Effect-FC component.

packages/example/package.json

@@ -1,9 +1,10 @@
 {
-  "name": "@effect-fc/example",
+  "name": "@effect-view/example",
   "version": "0.0.0",
   "type": "module",
   "private": true,
   "scripts": {
+    "build": "tsc -b && vite build",
     "dev": "vite",
     "lint:tsc": "tsc -b --noEmit",
     "lint:biome": "biome lint",
@@ -13,6 +14,7 @@
     "clean:modules": "rm -rf node_modules"
   },
   "devDependencies": {
+    "@effect-view/vite-plugin": "workspace:*",
     "@tanstack/react-router": "^1.170.10",
     "@tanstack/react-router-devtools": "^1.167.0",
     "@tanstack/router-plugin": "^1.168.13",
@@ -22,21 +24,18 @@
     "globals": "^17.6.0",
     "react": "^19.2.6",
     "react-dom": "^19.2.6",
-    "type-fest": "^5.7.0",
     "vite": "^8.0.16"
   },
   "dependencies": {
-    "@effect/platform": "^0.96.1",
-    "@effect/platform-browser": "^0.76.0",
+    "@effect/platform-browser": "4.0.0-beta.98",
     "@radix-ui/themes": "^3.3.0",
-    "@typed/id": "^0.17.2",
-    "effect": "^3.21.2",
-    "effect-fc": "workspace:*",
+    "effect": "4.0.0-beta.98",
+    "effect-fc-next": "workspace:*",
     "react-icons": "^5.6.0"
   },
   "overrides": {
     "@types/react": "^19.2.15",
-    "effect": "^3.21.2",
+    "effect": "4.0.0-beta.98",
     "react": "^19.2.6"
   }
 }

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

@@ -1,6 +1,6 @@
 import { Callout, Flex, Spinner, TextField } from "@radix-ui/themes"
 import { Array, Option, Struct } from "effect"
-import { Component, Form, Subscribable } from "effect-fc"
+import { Component, Form, View } from "effect-fc-next"
 import type * as React from "react"
 
 
@@ -17,7 +17,7 @@ export const TextFieldFormInputView = Component.make("TextFieldFormInputView")(f
     props: TextFieldFormInputView.Props<readonly PropertyKey[], any, any, any>
 ) {
     const input = yield* Form.useInput(props.form, props)
-    const [issues, isValidating, isCommitting] = yield* Subscribable.useAll([
+    const [issues, isValidating, isCommitting] = yield* View.useAll([
         props.form.issues,
         props.form.isValidating,
         props.form.isCommitting,
@@ -29,7 +29,7 @@ export const TextFieldFormInputView = Component.make("TextFieldFormInputView")(f
                 value={input.value}
                 onChange={e => input.setValue(e.target.value)}
                 disabled={isCommitting}
-                {...Struct.omit(props, "form")}
+                {...Struct.omit(props, ["form"])}
             >
                 {isValidating &&
                     <TextField.Slot side="right">

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

@@ -1,6 +1,6 @@
 import { Callout, Flex, Spinner, Switch, TextField } from "@radix-ui/themes"
 import { Array, Option, Struct } from "effect"
-import { Component, Form, Subscribable } from "effect-fc"
+import { Component, Form, View } from "effect-fc-next"
 import type * as React from "react"
 
 
@@ -17,7 +17,7 @@ export const TextFieldOptionalFormInputView = Component.make("TextFieldOptionalF
     props: TextFieldOptionalFormInputView.Props<readonly PropertyKey[], any, any, any>
 ) {
     const input = yield* Form.useOptionalInput(props.form, props)
-    const [issues, isValidating, isCommitting] = yield* Subscribable.useAll([
+    const [issues, isValidating, isCommitting] = yield* View.useAll([
         props.form.issues,
         props.form.isValidating,
         props.form.isCommitting,
@@ -29,7 +29,7 @@ export const TextFieldOptionalFormInputView = Component.make("TextFieldOptionalF
                 value={input.value}
                 onChange={e => input.setValue(e.target.value)}
                 disabled={!input.enabled || isCommitting}
-                {...Struct.omit(props, "form", "defaultValue")}
+                {...Struct.omit(props, ["form", "defaultValue"])}
             >
                 <TextField.Slot side="left">
                     <Switch

packages/example/src/main.tsx

@@ -1,24 +1,21 @@
 import { createRouter, RouterProvider } from "@tanstack/react-router"
-import { ReactRuntime } from "effect-fc"
+import { ReactRuntime } from "effect-fc-next"
 import { StrictMode } from "react"
 import { createRoot } from "react-dom/client"
 import { routeTree } from "./routeTree.gen"
 import { runtime } from "./runtime"
 
-
 const router = createRouter({ routeTree })
 
 declare module "@tanstack/react-router" {
-    interface Register {
-        router: typeof router
-    }
+    interface Register { router: typeof router }
 }
 
-// biome-ignore lint/style/noNonNullAssertion: React entrypoint
+// biome-ignore lint/style/noNonNullAssertion: the Vite template provides this element
 createRoot(document.getElementById("root")!).render(
     <StrictMode>
         <ReactRuntime.Provider runtime={runtime}>
             <RouterProvider router={router} />
         </ReactRuntime.Provider>
-    </StrictMode>
+    </StrictMode>,
 )

packages/example/src/routeTree.gen.ts

@@ -9,33 +9,16 @@
 // 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 AsyncRouteImport } from './routes/async'
 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 AsyncRouteImport } from './routes/async'
+import { Route as BlankRouteImport } from './routes/blank'
+import { Route as FormRouteImport } from './routes/form'
+import { Route as LensformRouteImport } from './routes/lensform'
+import { Route as QueryRouteImport } from './routes/query'
 
-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',
+const IndexRoute = IndexRouteImport.update({
+  id: '/',
+  path: '/',
   getParentRoute: () => rootRouteImport,
 } as any)
 const AsyncRoute = AsyncRouteImport.update({
@@ -43,19 +26,24 @@ const AsyncRoute = AsyncRouteImport.update({
   path: '/async',
   getParentRoute: () => rootRouteImport,
 } as any)
-const IndexRoute = IndexRouteImport.update({
-  id: '/',
-  path: '/',
+const BlankRoute = BlankRouteImport.update({
+  id: '/blank',
+  path: '/blank',
   getParentRoute: () => rootRouteImport,
 } as any)
-const DevMemoRoute = DevMemoRouteImport.update({
-  id: '/dev/memo',
-  path: '/dev/memo',
+const FormRoute = FormRouteImport.update({
+  id: '/form',
+  path: '/form',
   getParentRoute: () => rootRouteImport,
 } as any)
-const DevContextRoute = DevContextRouteImport.update({
-  id: '/dev/context',
-  path: '/dev/context',
+const LensformRoute = LensformRouteImport.update({
+  id: '/lensform',
+  path: '/lensform',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const QueryRoute = QueryRouteImport.update({
+  id: '/query',
+  path: '/query',
   getParentRoute: () => rootRouteImport,
 } as any)
 
@@ -64,20 +52,16 @@ export interface FileRoutesByFullPath {
   '/async': typeof AsyncRoute
   '/blank': typeof BlankRoute
   '/form': typeof FormRoute
+  '/lensform': typeof LensformRoute
   '/query': typeof QueryRoute
-  '/result': typeof ResultRoute
-  '/dev/context': typeof DevContextRoute
-  '/dev/memo': typeof DevMemoRoute
 }
 export interface FileRoutesByTo {
   '/': typeof IndexRoute
   '/async': typeof AsyncRoute
   '/blank': typeof BlankRoute
   '/form': typeof FormRoute
+  '/lensform': typeof LensformRoute
   '/query': typeof QueryRoute
-  '/result': typeof ResultRoute
-  '/dev/context': typeof DevContextRoute
-  '/dev/memo': typeof DevMemoRoute
 }
 export interface FileRoutesById {
   __root__: typeof rootRouteImport
@@ -85,42 +69,15 @@ export interface FileRoutesById {
   '/async': typeof AsyncRoute
   '/blank': typeof BlankRoute
   '/form': typeof FormRoute
+  '/lensform': typeof LensformRoute
   '/query': typeof QueryRoute
-  '/result': typeof ResultRoute
-  '/dev/context': typeof DevContextRoute
-  '/dev/memo': typeof DevMemoRoute
 }
 export interface FileRouteTypes {
   fileRoutesByFullPath: FileRoutesByFullPath
-  fullPaths:
-    | '/'
-    | '/async'
-    | '/blank'
-    | '/form'
-    | '/query'
-    | '/result'
-    | '/dev/context'
-    | '/dev/memo'
+  fullPaths: '/' | '/async' | '/blank' | '/form' | '/lensform' | '/query'
   fileRoutesByTo: FileRoutesByTo
-  to:
-    | '/'
-    | '/async'
-    | '/blank'
-    | '/form'
-    | '/query'
-    | '/result'
-    | '/dev/context'
-    | '/dev/memo'
-  id:
-    | '__root__'
-    | '/'
-    | '/async'
-    | '/blank'
-    | '/form'
-    | '/query'
-    | '/result'
-    | '/dev/context'
-    | '/dev/memo'
+  to: '/' | '/async' | '/blank' | '/form' | '/lensform' | '/query'
+  id: '__root__' | '/' | '/async' | '/blank' | '/form' | '/lensform' | '/query'
   fileRoutesById: FileRoutesById
 }
 export interface RootRouteChildren {
@@ -128,40 +85,17 @@ export interface RootRouteChildren {
   AsyncRoute: typeof AsyncRoute
   BlankRoute: typeof BlankRoute
   FormRoute: typeof FormRoute
+  LensformRoute: typeof LensformRoute
   QueryRoute: typeof QueryRoute
-  ResultRoute: typeof ResultRoute
-  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'
-      fullPath: '/blank'
-      preLoaderRoute: typeof BlankRouteImport
+    '/': {
+      id: '/'
+      path: '/'
+      fullPath: '/'
+      preLoaderRoute: typeof IndexRouteImport
       parentRoute: typeof rootRouteImport
     }
     '/async': {
@@ -171,25 +105,32 @@ declare module '@tanstack/react-router' {
       preLoaderRoute: typeof AsyncRouteImport
       parentRoute: typeof rootRouteImport
     }
-    '/': {
-      id: '/'
-      path: '/'
-      fullPath: '/'
-      preLoaderRoute: typeof IndexRouteImport
+    '/blank': {
+      id: '/blank'
+      path: '/blank'
+      fullPath: '/blank'
+      preLoaderRoute: typeof BlankRouteImport
       parentRoute: typeof rootRouteImport
     }
-    '/dev/memo': {
-      id: '/dev/memo'
-      path: '/dev/memo'
-      fullPath: '/dev/memo'
-      preLoaderRoute: typeof DevMemoRouteImport
+    '/form': {
+      id: '/form'
+      path: '/form'
+      fullPath: '/form'
+      preLoaderRoute: typeof FormRouteImport
       parentRoute: typeof rootRouteImport
     }
-    '/dev/context': {
-      id: '/dev/context'
-      path: '/dev/context'
-      fullPath: '/dev/context'
-      preLoaderRoute: typeof DevContextRouteImport
+    '/lensform': {
+      id: '/lensform'
+      path: '/lensform'
+      fullPath: '/lensform'
+      preLoaderRoute: typeof LensformRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/query': {
+      id: '/query'
+      path: '/query'
+      fullPath: '/query'
+      preLoaderRoute: typeof QueryRouteImport
       parentRoute: typeof rootRouteImport
     }
   }
@@ -200,10 +141,8 @@ const rootRouteChildren: RootRouteChildren = {
   AsyncRoute: AsyncRoute,
   BlankRoute: BlankRoute,
   FormRoute: FormRoute,
+  LensformRoute: LensformRoute,
   QueryRoute: QueryRoute,
-  ResultRoute: ResultRoute,
-  DevContextRoute: DevContextRoute,
-  DevMemoRoute: DevMemoRoute,
 }
 export const routeTree = rootRouteImport
   ._addFileChildren(rootRouteChildren)

packages/example/src/routes/__root.tsx

@@ -7,7 +7,7 @@ import "../index.css"
 
 
 export const Route = createRootRoute({
-    component: Root
+    component: Root,
 })
 
 function Root() {
@@ -17,6 +17,10 @@ function Root() {
                 <Flex direction="row" justify="center" align="center" gap="2">
                     <Link to="/">Index</Link>
                     <Link to="/blank">Blank</Link>
+                    <Link to="/async">Async</Link>
+                    <Link to="/query">Query</Link>
+                    <Link to="/form">Form</Link>
+                    <Link to="/lensform">LensForm</Link>
                 </Flex>
             </Container>
 

packages/example/src/routes/async.tsx

@@ -1,30 +1,35 @@
-import { HttpClient } from "@effect/platform"
 import { Container, Flex, Heading, Slider, Text, TextField } from "@radix-ui/themes"
 import { createFileRoute } from "@tanstack/react-router"
-import { Array, Effect, flow, Option, Schema } from "effect"
-import { Async, Component, Memoized } from "effect-fc"
+import { Console, Effect } from "effect"
+import { Async, Component, Memoized } from "effect-fc-next"
 import * as React from "react"
 import { runtime } from "@/runtime"
 
 
-const Post = Schema.Struct({
-    userId: Schema.Int,
-    id: Schema.Int,
-    title: Schema.String,
-    body: Schema.String,
-})
+const fetchPost = (id: number) => Effect.sleep("500 millis").pipe(
+    Effect.as({
+        title: `Post ${id}`,
+        body: `This is the content of post ${id}.`,
+    }),
+)
+
 
 interface AsyncFetchPostViewProps {
     readonly id: number
 }
 
-class AsyncFetchPostView extends Component.make("AsyncFetchPostView")(function*(props: AsyncFetchPostViewProps) {
-    const post = yield* Component.useOnChange(() => HttpClient.HttpClient.pipe(
-        Effect.tap(Effect.sleep("500 millis")),
-        Effect.andThen(client => client.get(`https://jsonplaceholder.typicode.com/posts/${ props.id }`)),
-        Effect.andThen(response => response.json),
-        Effect.andThen(Schema.decodeUnknown(Post)),
-    ), [props.id])
+const AsyncFetchPostView = Component.make("AsyncFetchPostView")(function*(
+    props: AsyncFetchPostViewProps,
+) {
+    yield* Component.useOnMount(() => Effect.gen(function*() {
+        yield* Effect.addFinalizer(() => Console.log("AsyncFetchPostView unmounted"))
+        yield* Console.log("AsyncFetchPostView mounted")
+    }))
+
+    const post = yield* Component.useOnChange(
+        () => fetchPost(props.id),
+        [props.id],
+    )
 
     return (
         <div>
@@ -34,10 +39,9 @@ class AsyncFetchPostView extends Component.make("AsyncFetchPostView")(function*(
     )
 }).pipe(
     Async.async,
-    Async.withOptions({ defaultFallback: <Text>Default fallback</Text> }),
+    Async.withOptions({ defaultFallback: <Text>Loading post...</Text> }),
     Memoized.memoized,
-) {}
-
+)
 
 const AsyncRouteComponent = Component.make("AsyncRouteView")(function*() {
     const [text, setText] = React.useState("Typing here should not trigger a refetch of the post")
@@ -50,20 +54,22 @@ const AsyncRouteComponent = Component.make("AsyncRouteView")(function*() {
             <Flex direction="column" align="stretch" gap="2">
                 <TextField.Root
                     value={text}
-                    onChange={e => setText(e.currentTarget.value)}
+                    onChange={event => setText(event.currentTarget.value)}
                 />
 
                 <Slider
                     value={[id]}
-                    onValueChange={flow(Array.head, Option.getOrThrow, setId)}
+                    min={1}
+                    max={10}
+                    onValueChange={([value]) => setId(value ?? 1)}
                 />
 
-                <AsyncFetchPost id={id} fallback={<Text>Loading post...</Text>} />
+                <AsyncFetchPost id={id} />
             </Flex>
         </Container>
     )
 }).pipe(
-    Component.withRuntime(runtime.context)
+    Component.withContext(runtime.context),
 )
 
 export const Route = createFileRoute("/async")({

packages/example/src/routes/form.tsx

@@ -1,143 +1,82 @@
 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, SubmittableForm, Subscribable } from "effect-fc"
+import { Console, Effect, Schema } from "effect"
+import { Component, Form, MutationForm, View } from "effect-fc-next"
 import { TextFieldFormInputView } from "@/lib/form/TextFieldFormInputView"
-import { TextFieldOptionalFormInputView } from "@/lib/form/TextFieldOptionalFormInputView"
-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,}$/i,
-
-    {
-        identifier: "email",
-        title: "email",
-        message: () => "Not an email address",
-    },
-)
-
-const RegisterFormSchema = Schema.Struct({
-    email: Schema.String.pipe(email),
-    password: Schema.String.pipe(Schema.minLength(3)),
-    birth: Schema.OptionFromSelf(DateTimeUtcFromZonedInput),
-})
-
-const RegisterFormSubmitSchema = Schema.Struct({
-    email: Schema.transformOrFail(
-        Schema.String,
-        Schema.String,
-        {
-            decode: (input, _options, ast) => input !== "admin@admin.com"
-                ? ParseResult.succeed(input)
-                : ParseResult.fail(new ParseResult.Type(ast, input, "This email is already in use.")),
-            encode: ParseResult.succeed,
-        },
-    ),
-    password: Schema.String,
-    birth: Schema.OptionFromSelf(Schema.DateTimeUtcFromSelf),
-})
-
-class RegisterFormService extends Effect.Service<RegisterFormService>()("RegisterFormService", {
-    scoped: Effect.gen(function*() {
-        const form = yield* SubmittableForm.service({
-            schema: RegisterFormSchema.pipe(
-                Schema.compose(
-                    Schema.transformOrFail(
-                        Schema.typeSchema(RegisterFormSchema),
-                        Schema.typeSchema(RegisterFormSchema),
-                        {
-                            decode: v => Effect.andThen(Effect.sleep("500 millis"), ParseResult.succeed(v)),
-                            encode: ParseResult.succeed,
-                        },
-                    ),
-                ),
-            ),
-
-            initialEncodedValue: { email: "", password: "", birth: Option.none() },
-            f: Effect.fnUntraced(function*([value]) {
-                yield* Effect.sleep("500 millis")
-                return yield* Schema.decode(RegisterFormSubmitSchema)(value)
+const RegisterSchema = Schema.Struct({
+    email: Schema.String.check(
+        Schema.isPattern(/^[^\s@]+@[^\s@]+\.[^\s@]+$/, {
+            message: "Enter a valid email address",
         }),
+    ),
+    password: Schema.String.check(
+        Schema.isMinLength(5, {
+            message: "Password must be at least 5 characters long",
+        }),
+    ),
+})
+
+const RegisterRouteComponent = Component.make("RegisterRouteView")(function*() {
+    yield* Component.useOnMount(() => Effect.gen(function*() {
+        yield* Effect.addFinalizer(() => Console.log("Form route unmounted"))
+        yield* Console.log("Form route mounted")
+    }))
+
+    const [form, emailField, passwordField] = yield* Component.useOnMount(() => Effect.gen(function*() {
+        const form = yield* MutationForm.service({
+            schema: RegisterSchema,
+            initialEncodedValue: { email: "", password: "" },
+            f: ([value]) => Effect.log(`Registered ${value.email}`),
         })
 
-        return {
-            form,
-            emailField: Form.focusObjectOn(form, "email"),
-            passwordField: Form.focusObjectOn(form, "password"),
-            birthField: Form.focusObjectOn(form, "birth"),
-        } as const
-    })
-}) {}
+        const emailField = Form.focusObjectOn(form, "email")
+        const passwordField = Form.focusObjectOn(form, "password")
 
-class RegisterFormView extends Component.make("RegisterFormView")(function*() {
-    const form = yield* RegisterFormService
-    const [canCommit, submitResult] = yield* Subscribable.useAll([
-        form.form.canCommit,
-        form.form.mutation.result,
+        return [form, emailField, passwordField] as const
+    }))
+
+    const [canCommit, isCommitting] = yield* View.useAll([
+        form.canCommit,
+        form.isCommitting,
     ])
 
-    const runPromise = yield* Component.useRunPromise()
     const TextFieldFormInput = yield* TextFieldFormInputView.use
-    const TextFieldOptionalFormInput = yield* TextFieldOptionalFormInputView.use
-
-    yield* Component.useOnMount(() => Effect.gen(function*() {
-        yield* Effect.addFinalizer(() => Console.log("RegisterFormView unmounted"))
-        yield* Console.log("RegisterFormView mounted")
-    }))
+    const runPromise = yield* Component.useRunPromise()
 
 
     return (
         <Container width="300">
-            <form onSubmit={e => {
-                e.preventDefault()
-                void runPromise(form.form.submit)
+            <form onSubmit={event => {
+                event.preventDefault()
+                void runPromise(form.submit)
             }}>
                 <Flex direction="column" gap="2">
                     <TextFieldFormInput
-                        form={form.emailField}
+                        form={emailField}
+                        placeholder="Email"
                         debounce="250 millis"
                     />
-
                     <TextFieldFormInput
-                        form={form.passwordField}
+                        form={passwordField}
+                        placeholder="Password"
+                        type="password"
                         debounce="250 millis"
                     />
-
-                    <TextFieldOptionalFormInput
-                        type="datetime-local"
-                        form={form.birthField}
-                        defaultValue=""
-                    />
-
-                    <Button disabled={!canCommit}>Submit</Button>
+                    <Button disabled={!canCommit || isCommitting}>
+                        {isCommitting ? "Submitting…" : "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,
-            )}
+            <Text size="2">A MutationForm validates local input, then submits it.</Text>
         </Container>
     )
-}) {}
-
-const RegisterPage = Component.make("RegisterPageView")(function*() {
-    const RegisterForm = yield* Effect.provide(
-        RegisterFormView.use,
-        yield* Component.useLayer(RegisterFormService.Default),
-    )
-
-    return <RegisterForm />
 }).pipe(
-    Component.withRuntime(runtime.context)
+    Component.withContext(runtime.context),
 )
 
-
 export const Route = createFileRoute("/form")({
-    component: RegisterPage
+    component: RegisterRouteComponent,
 })

packages/example/src/routes/index.tsx

@@ -1,24 +1,56 @@
+import { Button, Container, Flex, Text, TextField } from "@radix-ui/themes"
 import { createFileRoute } from "@tanstack/react-router"
-import { Effect } from "effect"
-import { Component } from "effect-fc"
+import { Effect, SubscriptionRef } from "effect"
+import { Component, Lens, View } from "effect-fc-next"
 import { runtime } from "@/runtime"
-import { TodosState } from "@/todo/TodosState"
-import { TodosView } from "@/todo/TodosView"
 
 
-const TodosStateLive = TodosState.Default("todos")
+const TodoRouteComponent = Component.make("TodoRouteView")(function*() {
+    const todosLens = yield* Component.useOnMount(() => Effect.map(
+        SubscriptionRef.make<readonly string[]>([]),
+        Lens.fromSubscriptionRef,
+    ))
+    const draftLens = yield* Component.useOnMount(() => Effect.map(
+        SubscriptionRef.make(""),
+        Lens.fromSubscriptionRef,
+    ))
 
-const Index = Component.make("IndexView")(function*() {
-    const Todos = yield* Effect.provide(
-        TodosView.use,
-        yield* Component.useLayer(TodosStateLive),
+    const [todos] = yield* View.useAll([todosLens])
+    const [draft, setDraft] = yield* Lens.useState(draftLens)
+    const runPromise = yield* Component.useRunPromise()
+
+    const addTodo = Lens.update(todosLens, todos =>
+        draft.trim() === ""
+            ? todos
+            : [...todos, draft.trim()],
+    ).pipe(
+        Effect.andThen(Lens.set(draftLens, "")),
     )
 
-    return <Todos />
+    return (
+        <Container width="480">
+            <Flex direction="column" gap="3">
+                <Text size="2">A small Effect v4 todo state example backed by a Lens.</Text>
+
+                <Flex gap="2">
+                    <TextField.Root
+                        value={draft}
+                        onChange={event => setDraft(event.currentTarget.value)}
+                    />
+
+                    <Button onClick={() => void runPromise(addTodo)}>
+                        Add
+                    </Button>
+                </Flex>
+
+                {todos.map(todo => <Text key={todo}>• {todo}</Text>)}
+            </Flex>
+        </Container>
+    )
 }).pipe(
-    Component.withRuntime(runtime.context)
+    Component.withContext(runtime.context),
 )
 
 export const Route = createFileRoute("/")({
-    component: Index
+    component: TodoRouteComponent,
 })

packages/example/src/routes/query.tsx

@@ -1,8 +1,9 @@
-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, SubscriptionRef } from "effect"
-import { Component, ErrorObserver, Lens, Mutation, Query, Result, Subscribable } from "effect-fc"
+import { Effect, Schema, SubscriptionRef } from "effect"
+import { HttpClient } from "effect/unstable/http"
+import { AsyncResult } from "effect/unstable/reactivity"
+import { Component, Lens, Mutation, Query, View } from "effect-fc-next"
 import { runtime } from "@/runtime"
 
 
@@ -13,30 +14,45 @@ const Post = Schema.Struct({
     body: Schema.String,
 })
 
-const ResultView = Component.make("ResultView")(function*() {
-    const runPromise = yield* Component.useRunPromise()
 
+interface PostResultViewProps {
+    readonly result: AsyncResult.AsyncResult<typeof Post.Type, Error>
+}
+
+const PostResultView = (props: PostResultViewProps) => AsyncResult.match(props.result, {
+    onInitial: result => result.waiting
+        ? <Text>Loading...</Text>
+        : <Text>No data.</Text>,
+    onFailure: result => <Text>Request failed: { result.cause.toString() }</Text>,
+    onSuccess: result => <>
+        {result.waiting && <Text>Refreshing...</Text>}
+        <Heading>{result.value.title}</Heading>
+        <Text>{result.value.body}</Text>
+    </>,
+})
+
+const QueryRouteComponent = Component.make("QueryRouteView")(function*() {
     const [idLens, query, mutation] = yield* Component.useOnMount(() => Effect.gen(function*() {
-        const idLens = Lens.fromSubscriptionRef(yield* SubscriptionRef.make(1))
-        const key = Stream.map(idLens.changes, id => [id] as const)
+        const keyLens = Lens.fromSubscriptionRef(yield* SubscriptionRef.make(["post", 1 as number] as const))
+        const idLens = Lens.focusTupleAt(keyLens, 1)
 
         const query = yield* Query.service({
-            key,
-            f: ([id]) => HttpClient.HttpClient.pipe(
-                Effect.tap(Effect.sleep("500 millis")),
+            key: keyLens,
+            f: ([, id]) => HttpClient.HttpClient.pipe(
+                Effect.tap(Effect.sleep("1 second")),
                 Effect.andThen(client => client.get(`https://jsonplaceholder.typicode.com/posts/${ id }`)),
                 Effect.andThen(response => response.json),
-                Effect.andThen(Schema.decodeUnknown(Post)),
+                Effect.andThen(Schema.decodeUnknownEffect(Post)),
             ),
             staleTime: "10 seconds",
         })
 
         const mutation = yield* Mutation.make({
-            f: ([id]: readonly [id: number]) => HttpClient.HttpClient.pipe(
-                Effect.tap(Effect.sleep("500 millis")),
+            f: ([id]: [id: number]) => HttpClient.HttpClient.pipe(
+                Effect.tap(Effect.sleep("1 second")),
                 Effect.andThen(client => client.get(`https://jsonplaceholder.typicode.com/posts/${ id }`)),
                 Effect.andThen(response => response.json),
-                Effect.andThen(Schema.decodeUnknown(Post)),
+                Effect.andThen(Schema.decodeUnknownEffect(Post)),
             ),
         })
 
@@ -44,74 +60,43 @@ const ResultView = Component.make("ResultView")(function*() {
     }))
 
     const [id, setId] = yield* Lens.useState(idLens)
-    const [queryResult, mutationResult] = yield* Subscribable.useAll([query.result, mutation.result])
+    const [queryState, mutationState] = yield* View.useAll([query.state, mutation.state])
 
-    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,
-    ))
+    const runSync = yield* Component.useRunSync()
 
     return (
         <Container>
             <Flex direction="column" align="center" gap="2">
                 <Slider
                     value={[id]}
-                    onValueChange={flow(Array.head, Option.getOrThrow, setId)}
+                    min={1}
+                    max={10}
+                    onValueChange={([value]) => setId(value ?? 1)}
                 />
 
-                <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>
+                <PostResultView result={queryState.result} />
 
                 <Flex direction="row" justify="center" align="center" gap="1">
-                    <Button onClick={() => runPromise(query.refresh)}>Refresh</Button>
-                    <Button onClick={() => runPromise(query.invalidateCache)}>Invalidate cache</Button>
+                    <Button onClick={() => runSync(query.refreshView)}>
+                        Refresh
+                    </Button>
+                    <Button onClick={() => runSync(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>
+                <PostResultView result={mutationState} />
 
-                <Flex direction="row" justify="center" align="center" gap="1">
-                    <Button onClick={() => runPromise(Effect.andThen(Lens.get(idLens), id => mutation.mutate([id])))}>Mutate</Button>
-                </Flex>
+                <Button onClick={() => runSync(mutation.mutateView([id]))}>
+                    Mutate
+                </Button>
             </Flex>
         </Container>
     )
-})
+}).pipe(
+    Component.withContext(runtime.context),
+)
 
 export const Route = createFileRoute("/query")({
-    component: Component.withRuntime(ResultView, runtime.context)
+    component: QueryRouteComponent,
 })

packages/example/src/runtime.ts

@@ -1,10 +1,11 @@
-import { FetchHttpClient } from "@effect/platform"
 import { Clipboard, Geolocation, Permissions } from "@effect/platform-browser"
 import { DateTime, Layer } from "effect"
-import { ReactRuntime } from "effect-fc"
+import { FetchHttpClient } from "effect/unstable/http"
+import { QueryClient, ReactRuntime } from "effect-fc-next"
 
 
-export const AppLive = Layer.empty.pipe(
+export const layer = Layer.empty.pipe(
+    Layer.provideMerge(QueryClient.layer()),
     Layer.provideMerge(DateTime.layerCurrentZoneLocal),
     Layer.provideMerge(Clipboard.layer),
     Layer.provideMerge(Geolocation.layer),
@@ -12,4 +13,4 @@ export const AppLive = Layer.empty.pipe(
     Layer.provideMerge(FetchHttpClient.layer),
 )
 
-export const runtime = ReactRuntime.make(AppLive)
+export const runtime = ReactRuntime.make(layer)

packages/example/vite.config.ts

@@ -1,5 +1,6 @@
 import { tanstackRouter } from "@tanstack/router-plugin/vite"
 import react from "@vitejs/plugin-react"
+import { effectViewPlugin } from "@effect-view/vite-plugin"
 import path from "node:path"
 import { defineConfig } from "vite"
 
@@ -7,6 +8,7 @@ import { defineConfig } from "vite"
 // https://vite.dev/config/
 export default defineConfig({
     plugins: [
+        effectViewPlugin(),
         tanstackRouter({
             target: "react",
             autoCodeSplitting: true,