chore: version packages (#149)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

.changeset/config.json

@@ -10,7 +10,10 @@
       "@json-render/shadcn",
       "@json-render/react-native",
       "@json-render/remotion",
-      "@json-render/codegen"
+      "@json-render/codegen",
+      "@json-render/zustand",
+      "@json-render/redux",
+      "@json-render/jotai"
     ]
   ],
   "linked": [],
@@ -18,7 +21,7 @@
   "baseBranch": "main",
   "updateInternalDependencies": "patch",
   "privatePackages": {
-    "version": false,
+    "version": true,
     "tag": false
   }
 }

.gitignore

@@ -6,11 +6,8 @@ node_modules
 .pnp.js
 
 # Local env files
-.env
-.env.local
-.env.development.local
-.env.test.local
-.env.production.local
+.env*
+!.env.example
 
 # Testing
 coverage
@@ -44,10 +41,6 @@ yarn-error.log*
 # opensrc - source code for packages
 opensrc/
 
-# json-studio (separate repo)
-json-studio/
-.env*.local
-
 # Stripe apps (generated from template + build artifacts)
 examples/stripe-app/*/stripe-app.json
 examples/stripe-app/*/.build

AGENTS.md

@@ -27,12 +27,48 @@ This ensures we don't install outdated versions that may have incompatible types
 - Do not use emojis in code or UI
 - Use shadcn CLI to add shadcn/ui components: `pnpm dlx shadcn@latest add <component>`
 
+## AI SDK / AI Gateway
+
+When using the Vercel AI SDK (`ai` package) with AI Gateway, pass the model as a plain string identifier -- do not import a provider constructor:
+
+```ts
+import { streamText } from "ai";
+
+const result = streamText({
+  model: "anthropic/claude-haiku-4.5",
+  prompt: "...",
+});
+```
+
+This requires `AI_GATEWAY_API_KEY` to be set in the environment. See `tests/e2e/` for examples.
+
+## Dev Servers
+
+All apps and examples with dev servers use [portless](https://github.com/vercel-labs/portless) to avoid hardcoded ports. Portless assigns random ports and exposes each app via `.localhost` URLs.
+
+Naming convention:
+- Main web app: `json-render` → `json-render.localhost:1355`
+- Examples: `[name]-demo.json-render` → `[name]-demo.json-render.localhost:1355`
+
+When adding a new example that runs a dev server, wrap its `dev` script with `portless <name>`:
+
+```json
+{
+  "scripts": {
+    "dev": "portless my-example-demo.json-render next dev --turbopack"
+  }
+}
+```
+
+Do **not** add `--port` flags -- portless handles port assignment automatically. Do **not** add portless as a project dependency; it must be installed globally.
+
 ## Workflow
 
 - Run `pnpm type-check` after each turn to ensure type safety
 - When making user-facing changes (new packages, API changes, new features, renamed exports, changed behavior), update the relevant documentation:
   - Package `README.md` files in `packages/*/README.md`
   - Root `README.md` (if packages table, install commands, or examples are affected)
+  - Web app docs in `apps/web/` (if guides, API references, or examples need updating)
   - Skills in `skills/*/SKILL.md` (if the package has a corresponding skill)
   - `AGENTS.md` (if workflow or conventions change)
 

README.md

@@ -32,7 +32,7 @@ json-render is a **Generative UI** framework: AI generates interfaces from natur
 
 ```typescript
 import { defineCatalog } from "@json-render/core";
-import { schema } from "@json-render/react";
+import { schema } from "@json-render/react/schema";
 import { z } from "zod";
 
 const catalog = defineCatalog(schema, {
@@ -114,6 +114,9 @@ function Dashboard({ spec }) {
 | `@json-render/react-native` | React Native renderer with standard mobile components |
 | `@json-render/remotion` | Remotion video renderer, timeline schema |
 | `@json-render/react-pdf` | React PDF renderer for generating PDF documents from specs |
+| `@json-render/redux` | Redux / Redux Toolkit adapter for `StateStore` |
+| `@json-render/zustand` | Zustand adapter for `StateStore` |
+| `@json-render/jotai` | Jotai adapter for `StateStore` |
 
 ## Renderers
 
@@ -121,7 +124,7 @@ function Dashboard({ spec }) {
 
 ```tsx
 import { defineRegistry, Renderer } from "@json-render/react";
-import { schema } from "@json-render/react";
+import { schema } from "@json-render/react/schema";
 
 // Flat spec format (root key + elements map)
 const spec = {
@@ -149,7 +152,8 @@ const { registry } = defineRegistry(catalog, { components });
 
 ```tsx
 import { defineCatalog } from "@json-render/core";
-import { schema, defineRegistry, Renderer } from "@json-render/react";
+import { schema } from "@json-render/react/schema";
+import { defineRegistry, Renderer } from "@json-render/react";
 import { shadcnComponentDefinitions } from "@json-render/shadcn/catalog";
 import { shadcnComponents } from "@json-render/shadcn";
 
@@ -343,9 +347,9 @@ pnpm install
 pnpm dev
 ```
 
-- http://localhost:3000 - Docs & Playground
-- http://localhost:3001 - Example Dashboard
-- http://localhost:3002 - Remotion Video Example
+- http://json-render.localhost:1355 - Docs & Playground
+- http://dashboard-demo.json-render.localhost:1355 - Example Dashboard
+- http://remotion-demo.json-render.localhost:1355 - Remotion Video Example
 - Chat Example: run `pnpm dev` in `examples/chat`
 - React Native example: run `npx expo start` in `examples/react-native`
 

apps/web/CHANGELOG.md

@@ -0,0 +1,10 @@
+# web
+
+## 0.1.1
+
+### Patch Changes
+
+- Updated dependencies [1d755c1]
+  - @json-render/core@0.9.0
+  - @json-render/react@0.9.0
+  - @json-render/codegen@0.9.0

apps/web/README.md

@@ -14,7 +14,7 @@ pnpm dev
 bun dev
 ```
 
-Open [http://localhost:3000](http://localhost:3000) with your browser to see the result.
+Open [http://json-render.localhost:1355](http://json-render.localhost:1355) with your browser to see the result.
 
 You can start editing the page by modifying `app/page.tsx`. The page auto-updates as you edit the file.
 

apps/web/app/(main)/docs/a2ui/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "A2UI Integration" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/a2ui")
 
 # A2UI Integration
 
@@ -66,7 +67,7 @@ A2UI uses an adjacency list model - a flat list of components with ID references
 
 ```typescript
 import { defineCatalog } from '@json-render/core';
-import { schema } from '@json-render/react';
+import { schema } from '@json-render/react/schema';
 import { z } from 'zod';
 
 // A2UI BoundValue schema

apps/web/app/(main)/docs/adaptive-cards/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "Adaptive Cards Integration" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/adaptive-cards")
 
 # Adaptive Cards Integration
 
@@ -89,7 +90,7 @@ Define a catalog matching the Adaptive Cards element types:
 
 ```typescript
 import { defineCatalog } from '@json-render/core';
-import { schema } from '@json-render/react';
+import { schema } from '@json-render/react/schema';
 import { z } from 'zod';
 
 // Common Adaptive Cards properties

apps/web/app/(main)/docs/ag-ui/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "AG-UI Integration" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/ag-ui")
 
 # AG-UI Integration
 
@@ -150,7 +151,7 @@ Create a catalog for UI components that agents can render:
 
 ```typescript
 import { defineCatalog } from '@json-render/core';
-import { schema } from '@json-render/react';
+import { schema } from '@json-render/react/schema';
 import { z } from 'zod';
 
 export const aguiCatalog = defineCatalog(schema, {

apps/web/app/(main)/docs/ai-sdk/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "AI SDK Integration" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/ai-sdk")
 
 # AI SDK Integration
 

apps/web/app/(main)/docs/api/codegen/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "@json-render/codegen API" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/codegen")
 
 # @json-render/codegen
 

apps/web/app/(main)/docs/api/core/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "@json-render/core API" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/core")
 
 # @json-render/core
 
@@ -10,7 +11,7 @@ Creates a type-safe catalog definition with schema validation.
 
 ```typescript
 import { defineCatalog } from '@json-render/core';
-import { schema } from '@json-render/react';
+import { schema } from '@json-render/react/schema';
 
 function defineCatalog<T extends ZodType>(
   s: T,
@@ -118,7 +119,7 @@ The schema for flat UI element trees. This is exported from @json-render/react.
 
 ```typescript
 import { defineCatalog } from '@json-render/core';
-import { schema } from '@json-render/react';
+import { schema } from '@json-render/react/schema';
 
 // schema defines:
 // - Spec shape: { root: string, elements: Record<string, UIElement> }

apps/web/app/(main)/docs/api/react-native/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "@json-render/react-native API" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/react-native")
 
 # @json-render/react-native
 
@@ -62,11 +63,36 @@ React Native renderer with standard components, providers, and hooks.
 ### StateProvider
 
 ```tsx
-<StateProvider initialState={object}>
+<StateProvider initialState={object} onStateChange={fn}>
   {children}
 </StateProvider>
 ```
 
+| Prop | Type | Description |
+|------|------|-------------|
+| `store` | `StateStore` | External store (controlled mode). When provided, `initialState` and `onStateChange` are ignored. |
+| `initialState` | `Record<string, unknown>` | Initial state model (uncontrolled mode). |
+| `onStateChange` | `(changes: Array<{ path: string; value: unknown }>) => void` | Callback when state changes (uncontrolled mode). Called once per `set` or `update` with all changed entries. |
+
+#### External Store (Controlled Mode)
+
+Pass a `StateStore` to bypass the internal state and wire json-render to any state management library:
+
+```tsx
+import { createStateStore, type StateStore } from "@json-render/react-native";
+
+const store = createStateStore({ count: 0 });
+
+<StateProvider store={store}>
+  {children}
+</StateProvider>
+
+// Mutate from anywhere — components re-render automatically:
+store.set("/count", 1);
+```
+
+The `store` prop is also available on `JSONUIProvider` and `createRenderer`.
+
 ### ActionProvider
 
 ```tsx

apps/web/app/(main)/docs/api/react-pdf/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "@json-render/react-pdf API" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/react-pdf")
 
 # @json-render/react-pdf
 
@@ -107,14 +108,17 @@ const PDFRenderer = createRenderer(catalog, components);
 ```typescript
 interface CreateRendererProps {
   spec: Spec | null;
+  store?: StateStore;
   state?: Record<string, unknown>;
   onAction?: (actionName: string, params?: Record<string, unknown>) => void;
-  onStateChange?: (path: string, value: unknown) => void;
+  onStateChange?: (changes: Array<{ path: string; value: unknown }>) => void;
   loading?: boolean;
   fallback?: ComponentRenderer;
 }
 ```
 
+When `store` is provided, `state` and `onStateChange` are ignored (controlled mode).
+
 ## Renderer
 
 The main component that renders a spec to `@react-pdf/renderer` elements.
@@ -343,6 +347,19 @@ Renders current page number and total pages. Format uses `{pageNumber}` and `{to
 }
 ```
 
+## External Store (Controlled Mode)
+
+Pass a `StateStore` to `StateProvider`, `JSONUIProvider`, or `createRenderer` for full control over state:
+
+```tsx
+import { createStateStore, type StateStore } from "@json-render/react-pdf";
+
+const store = createStateStore({ invoice: { total: 100 } });
+store.set("/invoice/total", 200);
+```
+
+When `store` is provided, `initialState` / `state` and `onStateChange` are ignored.
+
 ## Server-Safe Import
 
 Import schema and catalog definitions without pulling in React or `@react-pdf/renderer`:

apps/web/app/(main)/docs/api/react/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "@json-render/react API" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/react")
 
 # @json-render/react
 
@@ -9,11 +10,36 @@ React components, providers, and hooks.
 ### StateProvider
 
 ```tsx
-<StateProvider initialState={object}>
+<StateProvider initialState={object} onStateChange={fn}>
   {children}
 </StateProvider>
 ```
 
+| Prop | Type | Description |
+|------|------|-------------|
+| `store` | `StateStore` | External store (controlled mode). When provided, `initialState` and `onStateChange` are ignored. |
+| `initialState` | `Record<string, unknown>` | Initial state model (uncontrolled mode). |
+| `onStateChange` | `(changes: Array<{ path: string; value: unknown }>) => void` | Callback when state changes (uncontrolled mode). Called once per `set` or `update` with all changed entries. |
+
+#### External Store (Controlled Mode)
+
+Pass a `StateStore` to bypass the internal state and wire json-render to any state management library:
+
+```tsx
+import { createStateStore, type StateStore } from "@json-render/react";
+
+const store = createStateStore({ count: 0 });
+
+<StateProvider store={store}>
+  {children}
+</StateProvider>
+
+// Mutate from anywhere — React re-renders automatically:
+store.set("/count", 1);
+```
+
+The `store` prop is also available on `JSONUIProvider` and `createRenderer`.
+
 ### ActionProvider
 
 ```tsx

apps/web/app/(main)/docs/api/remotion/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "@json-render/remotion API" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/remotion")
 
 # @json-render/remotion
 

apps/web/app/(main)/docs/api/shadcn/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "@json-render/shadcn API" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/shadcn")
 
 # @json-render/shadcn
 

apps/web/app/(main)/docs/catalog/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "Catalog" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/catalog")
 
 # Catalog
 
@@ -18,7 +19,7 @@ A catalog is the vocabulary for your UI. While the [schema](/docs/schemas) defin
 
 ```typescript
 import { defineCatalog } from '@json-render/core';
-import { schema } from '@json-render/react'; // or '@json-render/react-native'
+import { schema } from '@json-render/react/schema'; // or '@json-render/react-native/schema'
 import { z } from 'zod';
 
 const catalog = defineCatalog(schema, {

apps/web/app/(main)/docs/changelog/page.mdx

@@ -1,9 +1,64 @@
-export const metadata = { title: "Changelog" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/changelog")
 
 # Changelog
 
 Notable changes and updates to json-render.
 
+## v0.9.0
+
+February 2026
+
+### New: External State Store
+
+The `StateStore` interface lets you plug in your own state management (Redux, Zustand, Jotai, XState, etc.) instead of the built-in internal store. Pass a `store` prop to `StateProvider`, `JSONUIProvider`, or `createRenderer` for controlled mode.
+
+- Added `StateStore` interface and `createStateStore()` factory to `@json-render/core`
+- `StateProvider`, `JSONUIProvider`, and `createRenderer` now accept an optional `store` prop
+- When `store` is provided, it becomes the single source of truth (`initialState`/`onStateChange` are ignored)
+- When `store` is omitted, everything works exactly as before (fully backward compatible)
+- Applied across all platform packages: react, react-native, react-pdf
+- Store utilities (`createStoreAdapter`, `immutableSetByPath`, `flattenToPointers`) available via `@json-render/core/store-utils` for building custom adapters
+
+New adapter packages: `@json-render/redux`, `@json-render/zustand`, `@json-render/jotai`.
+
+See the [Data Binding](/docs/data-binding#external-store-controlled-mode) guide for usage.
+
+### Changed: `onStateChange` signature updated (breaking)
+
+The `onStateChange` callback now receives a single array of changed entries instead of being called once per path. This makes batch updates via `update()` easier to handle:
+
+```ts
+// Before
+onStateChange?: (path: string, value: unknown) => void
+
+// After
+onStateChange?: (changes: Array<{ path: string; value: unknown }>) => void
+```
+
+The callback is only called when a `set()` or `update()` call actually changes the state. A `set()` call produces a single-element array; an `update()` call produces one array with all changed paths.
+
+### Fixed: Server-safe schema import
+
+`@json-render/react` barrel-imports React contexts that call `createContext`, which crashes in Next.js App Router API routes (RSC runtime strips `createContext`). All docs, examples, and skills now import `schema` from `@json-render/react/schema` instead of `@json-render/react`.
+
+For combined imports, split into separate `schema` (subpath) and client API (main entry) lines:
+
+```ts
+import { schema } from "@json-render/react/schema";
+import { defineRegistry, Renderer } from "@json-render/react";
+```
+
+### Fixed: Chaining actions
+
+Fixed an issue where chaining multiple actions on the same event (e.g. `setState` followed by a custom action) did not execute all actions. Affected `@json-render/react`, `@json-render/react-native`, and `@json-render/react-pdf`.
+
+### Fixed: Zod array inner type resolution
+
+Fixed safely resolving the inner type for Zod arrays in schema introspection, preventing errors when catalog component props use `z.array()`.
+
+---
+
 ## v0.8.0
 
 February 2026

apps/web/app/(main)/docs/code-export/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "Code Export" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/code-export")
 
 # Code Export
 
@@ -134,6 +135,6 @@ Run the dashboard example and click "Export Project" to see code generation in a
 ```bash
 cd examples/dashboard
 pnpm dev
-# Open http://localhost:3001
+# Open http://dashboard-demo.json-render.localhost:1355
 # Generate a widget, then click "Export Project"
 ```

apps/web/app/(main)/docs/custom-schema/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "Custom Schema & Renderer" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/custom-schema")
 
 # Custom Schema & Renderer
 

apps/web/app/(main)/docs/data-binding/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "Data Binding" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/data-binding")
 
 # Data Binding
 
@@ -258,6 +259,25 @@ The condition uses the same [visibility](/docs/visibility) expression format.
   </table>
 </div>
 
+## External Store (Controlled Mode)
+
+For advanced use cases, you can pass a `StateStore` to `StateProvider` to use your own state management (Redux, Zustand, XState, etc.) instead of the built-in internal store:
+
+```tsx
+import { createStateStore, type StateStore } from "@json-render/react";
+
+const store = createStateStore({ user: { name: "Alice" } });
+
+<StateProvider store={store}>
+  {children}
+</StateProvider>
+
+// Mutate from anywhere — React re-renders automatically:
+store.set("/user/name", "Bob");
+```
+
+When `store` is provided, `initialState` and `onStateChange` are ignored. The store is the single source of truth. See the [React API reference](/docs/api/react#external-store-controlled-mode) for the full `StateStore` interface.
+
 ## Next
 
 - [Visibility](/docs/visibility) — conditionally show or hide elements

apps/web/app/(main)/docs/generation-modes/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "Generation Modes" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/generation-modes")
 
 # Generation Modes
 

apps/web/app/(main)/docs/installation/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "Installation" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/installation")
 
 # Installation
 
@@ -24,6 +25,18 @@ Requires Tailwind CSS in your project. See the [@json-render/shadcn API referenc
 
 <PackageInstall packages="@json-render/core @json-render/remotion remotion @remotion/player" />
 
+## For External State Management (Optional)
+
+If you want to wire json-render to an existing state management library instead of the built-in store, install the adapter for your library:
+
+<PackageInstall packages="@json-render/zustand" />
+
+<PackageInstall packages="@json-render/redux" />
+
+<PackageInstall packages="@json-render/jotai" />
+
+See the [Data Binding](/docs/data-binding#external-store-controlled-mode) guide for usage.
+
 ## Peer Dependencies
 
 json-render requires the following peer dependencies:

apps/web/app/(main)/docs/migration/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "Migration Guide" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/migration")
 
 # Migration Guide
 

apps/web/app/(main)/docs/openapi/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "OpenAPI Integration" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/openapi")
 
 # OpenAPI Integration
 
@@ -99,7 +100,7 @@ Create components that map to OpenAPI data types:
 
 ```typescript
 import { defineCatalog } from '@json-render/core';
-import { schema } from '@json-render/react';
+import { schema } from '@json-render/react/schema';
 import { z } from 'zod';
 
 export const openapiCatalog = defineCatalog(schema, {

apps/web/app/(main)/docs/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "Introduction" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs")
 
 # Introduction
 
@@ -22,7 +23,7 @@ A catalog declares what AI can use: components with typed props, actions with ty
 
 ```typescript
 import { defineCatalog } from '@json-render/core';
-import { schema } from '@json-render/react';
+import { schema } from '@json-render/react/schema';
 import { z } from 'zod';
 
 export const catalog = defineCatalog(schema, {

apps/web/app/(main)/docs/quick-start/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "Quick Start" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/quick-start")
 
 # Quick Start
 
@@ -11,7 +12,7 @@ Create a catalog that defines what components AI can use:
 ```typescript
 // lib/catalog.ts
 import { defineCatalog } from '@json-render/core';
-import { schema } from '@json-render/react';
+import { schema } from '@json-render/react/schema';
 import { z } from 'zod';
 
 export const catalog = defineCatalog(schema, {

apps/web/app/(main)/docs/registry/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "Registry" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/registry")
 
 # Registry
 
@@ -132,7 +133,7 @@ Actions are declared in your [catalog](/docs/catalog). The `@json-render/react`
 
 ```typescript
 import { defineCatalog } from '@json-render/core';
-import { schema } from '@json-render/react';
+import { schema } from '@json-render/react/schema';
 import { z } from 'zod';
 
 const catalog = defineCatalog(schema, {

apps/web/app/(main)/docs/schemas/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "Schemas" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/schemas")
 
 # Schemas
 

apps/web/app/(main)/docs/specs/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "Specs" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/specs")
 
 # Specs
 

apps/web/app/(main)/docs/streaming/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "Streaming" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/streaming")
 
 # Streaming
 

apps/web/app/(main)/docs/validation/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "Validation" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/validation")
 
 # Validation
 
@@ -66,7 +67,7 @@ Define custom validators in your catalog's `functions` field. The catalog itself
 
 ```typescript
 import { defineCatalog } from '@json-render/core';
-import { schema } from '@json-render/react'; // or '@json-render/react-native'
+import { schema } from '@json-render/react/schema'; // or '@json-render/react-native/schema'
 import { z } from 'zod';
 
 const catalog = defineCatalog(schema, {

apps/web/app/(main)/docs/visibility/page.mdx

@@ -1,4 +1,5 @@
-export const metadata = { title: "Visibility" }
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/visibility")
 
 # Visibility
 

apps/web/app/layout.tsx

@@ -1,5 +1,6 @@
 import type { Metadata } from "next";
 import localFont from "next/font/local";
+import { GeistPixelSquare } from "geist/font/pixel";
 import "./globals.css";
 import { ThemeProvider } from "@/components/theme-provider";
 import { DocsChat } from "@/components/docs-chat";
@@ -61,7 +62,6 @@ export const metadata: Metadata = {
     description:
       "The Generative UI framework. Generate dashboards, widgets, and apps from prompts — safely constrained to components you define.",
     images: ["/og"],
-    creator: "@verabornnot",
   },
   robots: {
     index: true,
@@ -92,7 +92,9 @@ export default async function RootLayout({
           />
         )}
       </head>
-      <body className={`${geistSans.variable} ${geistMono.variable}`}>
+      <body
+        className={`${geistSans.variable} ${geistMono.variable} ${GeistPixelSquare.variable}`}
+      >
         <ThemeProvider>
           {children}
           <DocsChat defaultOpen={chatOpen} defaultWidth={chatWidth} />

apps/web/app/og/og-image.tsx

@@ -5,19 +5,20 @@ import { join } from "node:path";
 export { getPageTitle } from "@/lib/page-titles";
 
 // Cache font data in memory after first load
-let fontCache: { geistRegular: Buffer } | null = null;
+let fontCache: { geistRegular: Buffer; geistPixelSquare: Buffer } | null = null;
 
 async function loadFonts() {
   if (fontCache) return fontCache;
-  const geistRegular = await readFile(
-    join(process.cwd(), "public/Geist-Regular.ttf"),
-  );
-  fontCache = { geistRegular };
+  const [geistRegular, geistPixelSquare] = await Promise.all([
+    readFile(join(process.cwd(), "public/Geist-Regular.ttf")),
+    readFile(join(process.cwd(), "public/GeistPixel-Square.ttf")),
+  ]);
+  fontCache = { geistRegular, geistPixelSquare };
   return fontCache;
 }
 
 export async function renderOgImage(title: string) {
-  const { geistRegular } = await loadFonts();
+  const { geistRegular, geistPixelSquare } = await loadFonts();
 
   return new ImageResponse(
     <div
@@ -53,8 +54,8 @@ export async function renderOgImage(title: string) {
         <span
           style={{
             fontSize: 36,
-            fontFamily: "Geist",
-            fontWeight: 400,
+            fontFamily: "Geist Pixel Square",
+            fontWeight: 500,
             color: "white",
           }}
         >
@@ -99,6 +100,12 @@ export async function renderOgImage(title: string) {
           style: "normal",
           weight: 400,
         },
+        {
+          name: "Geist Pixel Square",
+          data: geistPixelSquare.buffer as ArrayBuffer,
+          style: "normal",
+          weight: 500,
+        },
       ],
     },
   );

apps/web/app/playground/page.tsx

@@ -1,10 +1,7 @@
 import { Playground } from "@/components/playground";
+import { pageMetadata } from "@/lib/page-metadata";
 
-import { PAGE_TITLES } from "@/lib/page-titles";
-
-export const metadata = {
-  title: PAGE_TITLES["playground"],
-};
+export const metadata = pageMetadata("playground");
 
 export default function PlaygroundPage() {
   return <Playground />;

apps/web/components/header.tsx

@@ -57,7 +57,7 @@ export function Header() {
             </svg>
           </span>
           <Link href="/">
-            <span className="font-medium tracking-tight text-lg">
+            <span className="font-medium tracking-tight text-lg font-(family-name:--font-geist-pixel-square)">
               json-render
             </span>
           </Link>

apps/web/components/playground.tsx

@@ -16,17 +16,20 @@ import { CopyButton } from "./copy-button";
 import { Toaster } from "./ui/sonner";
 import { Header } from "./header";
 import { Sheet, SheetContent, SheetTitle } from "./ui/sheet";
+import { JsonEditor } from "@visual-json/react";
+import type { JsonValue } from "@visual-json/react";
 import { PlaygroundRenderer } from "@/lib/render/renderer";
 import { playgroundCatalog } from "@/lib/render/catalog";
 import { buildCatalogDisplayData } from "@/lib/render/catalog-display";
 
-type Tab = "json" | "nested" | "stream" | "catalog";
+type Tab = "json" | "nested" | "stream" | "catalog" | "visual";
 type RenderView = "preview" | "code";
 type MobileView =
   | "json"
   | "nested"
   | "stream"
   | "catalog"
+  | "visual"
   | "preview"
   | "generated-code";
 
@@ -233,6 +236,20 @@ export function Playground() {
     [handleSubmit],
   );
 
+  const handleVisualChange = useCallback(
+    (value: JsonValue) => {
+      if (!selectedVersionId || isStreaming) return;
+      setVersions((prev) =>
+        prev.map((v) =>
+          v.id === selectedVersionId
+            ? { ...v, tree: value as unknown as Spec }
+            : v,
+        ),
+      );
+    },
+    [selectedVersionId, isStreaming],
+  );
+
   const jsonCode = currentTree
     ? JSON.stringify(currentTree, null, 2)
     : "// waiting...";
@@ -479,31 +496,69 @@ ${jsx}
         ? jsonCode
         : activeTab === "nested"
           ? nestedCode
-          : "";
+          : activeTab === "visual"
+            ? jsonCode
+            : "";
 
   const codePane = (
     <div className="h-full flex flex-col border-t border-border">
       <div className="border-b border-border px-3 h-9 flex items-center gap-3">
-        {(["json", "nested", "stream", "catalog"] as const).map((tab) => (
-          <button
-            key={tab}
-            onClick={() => setActiveTab(tab)}
-            className={`text-xs font-mono transition-colors ${
-              activeTab === tab
-                ? "text-foreground"
-                : "text-muted-foreground hover:text-foreground"
-            }`}
-          >
-            {tab}
-          </button>
-        ))}
+        {(["json", "visual", "nested", "stream", "catalog"] as const).map(
+          (tab) => (
+            <button
+              key={tab}
+              onClick={() => setActiveTab(tab)}
+              className={`text-xs font-mono transition-colors ${
+                activeTab === tab
+                  ? "text-foreground"
+                  : "text-muted-foreground hover:text-foreground"
+              }`}
+            >
+              {tab}
+            </button>
+          ),
+        )}
         <div className="flex-1" />
-        {activeTab !== "catalog" && (
+        {activeTab !== "catalog" && activeTab !== "visual" && (
           <CopyButton text={copyText} className="text-muted-foreground" />
         )}
       </div>
       <div className="flex-1 overflow-auto">
-        {activeTab === "catalog" ? (
+        {activeTab === "visual" ? (
+          currentTree ? (
+            <JsonEditor
+              value={currentTree as unknown as JsonValue}
+              onChange={handleVisualChange}
+              readOnly={isStreaming}
+              sidebarOpen={false}
+              height="100%"
+              className="h-full"
+              style={
+                {
+                  "--vj-bg": "var(--background)",
+                  "--vj-bg-panel": "var(--background)",
+                  "--vj-bg-hover": "var(--muted)",
+                  "--vj-bg-selected": "var(--primary)",
+                  "--vj-bg-selected-muted": "var(--muted)",
+                  "--vj-text": "var(--foreground)",
+                  "--vj-text-selected": "var(--primary-foreground)",
+                  "--vj-text-muted": "var(--muted-foreground)",
+                  "--vj-text-dim": "var(--muted-foreground)",
+                  "--vj-border": "var(--border)",
+                  "--vj-border-subtle": "var(--border)",
+                  "--vj-accent": "var(--primary)",
+                  "--vj-accent-muted": "var(--muted)",
+                  "--vj-input-bg": "var(--secondary)",
+                  "--vj-input-border": "var(--border)",
+                } as React.CSSProperties
+              }
+            />
+          ) : (
+            <div className="text-muted-foreground/50 p-3 text-sm font-mono">
+              {"// generate a spec to edit visually"}
+            </div>
+          )
+        ) : activeTab === "catalog" ? (
           <div className="h-full flex flex-col text-sm">
             <div className="flex items-center gap-3 px-3 h-9 border-b border-border">
               {(
@@ -735,19 +790,21 @@ ${jsx}
               : 0}
           </button>
           {/* Code tabs */}
-          {(["json", "nested", "stream", "catalog"] as const).map((tab) => (
-            <button
-              key={tab}
-              onClick={() => setMobileView(tab)}
-              className={`text-xs font-mono transition-colors shrink-0 ${
-                mobileView === tab
-                  ? "text-foreground"
-                  : "text-muted-foreground hover:text-foreground"
-              }`}
-            >
-              {tab}
-            </button>
-          ))}
+          {(["json", "visual", "nested", "stream", "catalog"] as const).map(
+            (tab) => (
+              <button
+                key={tab}
+                onClick={() => setMobileView(tab)}
+                className={`text-xs font-mono transition-colors shrink-0 ${
+                  mobileView === tab
+                    ? "text-foreground"
+                    : "text-muted-foreground hover:text-foreground"
+                }`}
+              >
+                {tab}
+              </button>
+            ),
+          )}
           <div className="flex-1" />
           {/* Preview / code toggle */}
           {[
@@ -770,7 +827,41 @@ ${jsx}
 
         {/* Main content area */}
         <div className="flex-1 min-h-0 overflow-auto">
-          {mobileView === "catalog" ? (
+          {mobileView === "visual" ? (
+            currentTree ? (
+              <JsonEditor
+                value={currentTree as unknown as JsonValue}
+                onChange={handleVisualChange}
+                readOnly={isStreaming}
+                sidebarOpen={false}
+                height="100%"
+                className="h-full"
+                style={
+                  {
+                    "--vj-bg": "var(--background)",
+                    "--vj-bg-panel": "var(--background)",
+                    "--vj-bg-hover": "var(--muted)",
+                    "--vj-bg-selected": "var(--primary)",
+                    "--vj-bg-selected-muted": "var(--muted)",
+                    "--vj-text": "var(--foreground)",
+                    "--vj-text-selected": "var(--primary-foreground)",
+                    "--vj-text-muted": "var(--muted-foreground)",
+                    "--vj-text-dim": "var(--muted-foreground)",
+                    "--vj-border": "var(--border)",
+                    "--vj-border-subtle": "var(--border)",
+                    "--vj-accent": "var(--primary)",
+                    "--vj-accent-muted": "var(--muted)",
+                    "--vj-input-bg": "var(--secondary)",
+                    "--vj-input-border": "var(--border)",
+                  } as React.CSSProperties
+                }
+              />
+            ) : (
+              <div className="text-muted-foreground/50 p-3 text-sm font-mono">
+                {"// generate a spec to edit visually"}
+              </div>
+            )
+          ) : mobileView === "catalog" ? (
             <div className="h-full flex flex-col text-sm">
               <div className="flex items-center gap-3 px-3 h-9 border-b border-border">
                 {(

apps/web/eslint.config.js

@@ -1,4 +1,4 @@
-import { nextJsConfig } from "@repo/eslint-config/next-js";
+import { nextJsConfig } from "@internal/eslint-config/next-js";
 
 /** @type {import("eslint").Linter.Config[]} */
 export default [

apps/web/lib/page-metadata.ts

@@ -0,0 +1,39 @@
+import type { Metadata } from "next";
+import { PAGE_TITLES } from "./page-titles";
+
+const DESCRIPTION =
+  "The Generative UI framework. Generate dashboards, widgets, and apps from prompts — safely constrained to components you define.";
+
+export function pageMetadata(slug: string): Metadata {
+  const title = PAGE_TITLES[slug];
+  if (!title) return {};
+
+  const displayTitle = title.replace(/\n/g, " ");
+  const fullTitle = `${displayTitle} | json-render`;
+  const ogImageUrl = slug ? `/og/${slug}` : "/og";
+
+  return {
+    title: displayTitle,
+    openGraph: {
+      type: "website",
+      locale: "en_US",
+      siteName: "json-render",
+      title: fullTitle,
+      description: DESCRIPTION,
+      images: [
+        {
+          url: ogImageUrl,
+          width: 1200,
+          height: 630,
+          alt: `${displayTitle} - json-render`,
+        },
+      ],
+    },
+    twitter: {
+      card: "summary_large_image",
+      title: fullTitle,
+      description: DESCRIPTION,
+      images: [ogImageUrl],
+    },
+  };
+}

apps/web/lib/page-titles.ts

@@ -42,6 +42,7 @@ export const PAGE_TITLES: Record<string, string> = {
   "docs/api/react-native": "@json-render/react-native API",
   "docs/api/codegen": "@json-render/codegen API",
   "docs/api/remotion": "@json-render/remotion API",
+  "docs/api/shadcn": "@json-render/shadcn API",
 };
 
 /**

apps/web/package.json

@@ -1,11 +1,11 @@
 {
   "name": "web",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "type": "module",
   "private": true,
   "license": "Apache-2.0",
   "scripts": {
-    "dev": "next dev --turbopack",
+    "dev": "portless json-render next dev --turbopack",
     "build": "next build",
     "start": "next start",
     "lint": "eslint --max-warnings 0",
@@ -28,11 +28,13 @@
     "@upstash/redis": "^1.36.1",
     "@vercel/analytics": "^1.6.1",
     "@vercel/speed-insights": "^1.3.1",
+    "@visual-json/react": "0.1.1",
     "ai": "^6.0.33",
     "bash-tool": "1.3.14",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "embla-carousel-react": "^8.6.0",
+    "geist": "1.7.0",
     "just-bash": "2.9.6",
     "lucide-react": "^0.562.0",
     "next": "16.1.1",
@@ -51,8 +53,8 @@
     "zod": "^4.0.0"
   },
   "devDependencies": {
-    "@repo/eslint-config": "workspace:*",
-    "@repo/typescript-config": "workspace:*",
+    "@internal/eslint-config": "workspace:*",
+    "@internal/typescript-config": "workspace:*",
     "@tailwindcss/postcss": "^4.1.18",
     "@types/mdx": "^2.0.13",
     "@types/node": "^22.15.3",

apps/web/tsconfig.json

@@ -1,5 +1,5 @@
 {
-  "extends": "@repo/typescript-config/nextjs.json",
+  "extends": "@internal/typescript-config/nextjs.json",
   "compilerOptions": {
     "plugins": [
       {

examples/chat/CHANGELOG.md

@@ -0,0 +1,10 @@
+# example-chat
+
+## 0.1.1
+
+### Patch Changes
+
+- Updated dependencies [1d755c1]
+  - @json-render/core@0.9.0
+  - @json-render/react@0.9.0
+  - @json-render/shadcn@0.9.0

examples/chat/eslint.config.js

@@ -1,4 +1,4 @@
-import { nextJsConfig } from "@repo/eslint-config/next-js";
+import { nextJsConfig } from "@internal/eslint-config/next-js";
 
 /** @type {import("eslint").Linter.Config[]} */
 export default [

examples/chat/next-env.d.ts

@@ -1,6 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-import "./.next/types/routes.d.ts";
+import "./.next/dev/types/routes.d.ts";
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.

examples/chat/package.json

@@ -1,10 +1,10 @@
 {
   "name": "example-chat",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "type": "module",
   "private": true,
   "scripts": {
-    "dev": "next dev --turbopack",
+    "dev": "portless chat-demo.json-render next dev --turbopack",
     "build": "next build",
     "start": "next start",
     "lint": "eslint --max-warnings 0",
@@ -36,7 +36,7 @@
     "zod": "4.3.5"
   },
   "devDependencies": {
-    "@repo/eslint-config": "workspace:*",
+    "@internal/eslint-config": "workspace:*",
     "@tailwindcss/postcss": "^4.1.18",
     "@types/node": "^22.10.0",
     "@types/react": "19.2.3",

examples/dashboard/CHANGELOG.md

@@ -0,0 +1,10 @@
+# example-dashboard
+
+## 0.1.1
+
+### Patch Changes
+
+- Updated dependencies [1d755c1]
+  - @json-render/core@0.9.0
+  - @json-render/react@0.9.0
+  - @json-render/codegen@0.9.0

examples/dashboard/components/widget.tsx

@@ -196,24 +196,28 @@ export function Widget({
     onDeleted?.();
   }, [widgetId, onDeleted]);
 
-  const handleStateChange = useCallback((path: string, value: unknown) => {
-    setState((prev) => {
-      const next = { ...prev };
-      // Convert path like "customerForm/name" to nested object
-      const parts = path.split("/");
-      let current: Record<string, unknown> = next;
-      for (let i = 0; i < parts.length - 1; i++) {
-        const part = parts[i]!;
-        if (!(part in current) || typeof current[part] !== "object") {
-          current[part] = {};
+  const handleStateChange = useCallback(
+    (changes: Array<{ path: string; value: unknown }>) => {
+      setState((prev) => {
+        const next = { ...prev };
+        for (const { path, value } of changes) {
+          const parts = path.split("/");
+          let current: Record<string, unknown> = next;
+          for (let i = 0; i < parts.length - 1; i++) {
+            const part = parts[i]!;
+            if (!(part in current) || typeof current[part] !== "object") {
+              current[part] = {};
+            }
+            current = current[part] as Record<string, unknown>;
+          }
+          const lastPart = parts[parts.length - 1]!;
+          current[lastPart] = value;
         }
-        current = current[part] as Record<string, unknown>;
-      }
-      const lastPart = parts[parts.length - 1]!;
-      current[lastPart] = value;
-      return next;
-    });
-  }, []);
+        return next;
+      });
+    },
+    [],
+  );
 
   // Use spec from stream, or initial spec for saved widgets
   const currentSpec = spec || initialSpec;

examples/dashboard/eslint.config.js

@@ -1,4 +1,4 @@
-import { nextJsConfig } from "@repo/eslint-config/next-js";
+import { nextJsConfig } from "@internal/eslint-config/next-js";
 
 /** @type {import("eslint").Linter.Config[]} */
 export default [

examples/dashboard/lib/render/renderer.tsx

@@ -24,7 +24,7 @@ interface DashboardRendererProps {
   spec: Spec | null;
   state?: Record<string, unknown>;
   setState?: SetState;
-  onStateChange?: (path: string, value: unknown) => void;
+  onStateChange?: (changes: Array<{ path: string; value: unknown }>) => void;
   loading?: boolean;
 }
 

examples/dashboard/next-env.d.ts

@@ -1,6 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-import "./.next/types/routes.d.ts";
+import "./.next/dev/types/routes.d.ts";
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.

examples/dashboard/package.json

@@ -1,10 +1,10 @@
 {
   "name": "example-dashboard",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "type": "module",
   "private": true,
   "scripts": {
-    "dev": "next dev --turbopack",
+    "dev": "portless dashboard-demo.json-render next dev --turbopack",
     "build": "next build",
     "start": "next start",
     "lint": "eslint --max-warnings 0",
@@ -42,7 +42,7 @@
     "zod": "^4.0.0"
   },
   "devDependencies": {
-    "@repo/eslint-config": "workspace:*",
+    "@internal/eslint-config": "workspace:*",
     "@tailwindcss/postcss": "^4.1.18",
     "@types/node": "^22.10.0",
     "@types/react": "19.2.3",

examples/no-ai/CHANGELOG.md

@@ -0,0 +1,10 @@
+# example-no-ai
+
+## 0.1.1
+
+### Patch Changes
+
+- Updated dependencies [1d755c1]
+  - @json-render/core@0.9.0
+  - @json-render/react@0.9.0
+  - @json-render/shadcn@0.9.0

examples/no-ai/eslint.config.js

@@ -1,4 +1,4 @@
-import { nextJsConfig } from "@repo/eslint-config/next-js";
+import { nextJsConfig } from "@internal/eslint-config/next-js";
 
 /** @type {import("eslint").Linter.Config[]} */
 export default [

examples/no-ai/next-env.d.ts

@@ -1,6 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-import "./.next/types/routes.d.ts";
+import "./.next/dev/types/routes.d.ts";
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.

examples/no-ai/package.json

@@ -1,10 +1,10 @@
 {
   "name": "example-no-ai",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "type": "module",
   "private": true,
   "scripts": {
-    "dev": "next dev --turbopack --port 3003",
+    "dev": "portless no-ai-demo.json-render next dev --turbopack",
     "build": "next build",
     "start": "next start",
     "lint": "eslint --max-warnings 0",
@@ -26,7 +26,7 @@
     "zod": "4.3.5"
   },
   "devDependencies": {
-    "@repo/eslint-config": "workspace:*",
+    "@internal/eslint-config": "workspace:*",
     "@tailwindcss/postcss": "^4.1.18",
     "@types/node": "^22.10.0",
     "@types/react": "19.2.3",

examples/react-native/CHANGELOG.md

@@ -0,0 +1,9 @@
+# example-react-native
+
+## 0.1.1
+
+### Patch Changes
+
+- Updated dependencies [1d755c1]
+  - @json-render/core@0.9.0
+  - @json-render/react-native@0.9.0

examples/react-native/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-react-native",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "private": true,
   "main": "expo-router/entry",
   "scripts": {

examples/react-pdf/CHANGELOG.md

@@ -0,0 +1,9 @@
+# example-react-pdf
+
+## 0.1.1
+
+### Patch Changes
+
+- Updated dependencies [1d755c1]
+  - @json-render/core@0.9.0
+  - @json-render/react-pdf@0.9.0

examples/react-pdf/next-env.d.ts

@@ -1,6 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-import "./.next/types/routes.d.ts";
+import "./.next/dev/types/routes.d.ts";
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.

examples/react-pdf/package.json

@@ -1,10 +1,10 @@
 {
   "name": "example-react-pdf",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "type": "module",
   "private": true,
   "scripts": {
-    "dev": "next dev --turbopack --port 3005",
+    "dev": "portless react-pdf-demo.json-render next dev --turbopack",
     "build": "next build",
     "start": "next start",
     "check-types": "tsc --noEmit"
@@ -28,7 +28,7 @@
     "zod": "4.3.5"
   },
   "devDependencies": {
-    "@repo/typescript-config": "workspace:*",
+    "@internal/typescript-config": "workspace:*",
     "@types/node": "^22.10.0",
     "@types/react": "19.2.3",
     "@types/react-dom": "19.2.3",

examples/remotion/CHANGELOG.md

@@ -0,0 +1,9 @@
+# example-remotion
+
+## 0.1.1
+
+### Patch Changes
+
+- Updated dependencies [1d755c1]
+  - @json-render/core@0.9.0
+  - @json-render/remotion@0.9.0

examples/remotion/next-env.d.ts

@@ -1,6 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-import "./.next/types/routes.d.ts";
+import "./.next/dev/types/routes.d.ts";
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.

examples/remotion/package.json

@@ -1,10 +1,10 @@
 {
   "name": "example-remotion",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "type": "module",
   "private": true,
   "scripts": {
-    "dev": "next dev --turbopack --port 3002",
+    "dev": "portless remotion-demo.json-render next dev --turbopack",
     "build": "next build",
     "start": "next start",
     "check-types": "tsc --noEmit"
@@ -29,7 +29,7 @@
     "zod": "^4.0.0"
   },
   "devDependencies": {
-    "@repo/eslint-config": "workspace:*",
+    "@internal/eslint-config": "workspace:*",
     "@tailwindcss/postcss": "^4.1.18",
     "@types/node": "^22.10.0",
     "@types/react": "19.2.3",

examples/stripe-app/api/next-env.d.ts

@@ -1,6 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-import "./.next/types/routes.d.ts";
+import "./.next/dev/types/routes.d.ts";
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.

examples/stripe-app/api/package.json

@@ -4,7 +4,7 @@
   "private": true,
   "type": "module",
   "scripts": {
-    "dev": "next dev --port 3001",
+    "dev": "portless stripe-api-demo.json-render next dev",
     "build": "next build",
     "start": "next start --port 3001"
   },

examples/stripe-app/drawer-app/CHANGELOG.md

@@ -0,0 +1,9 @@
+# com.example.json-render-demo
+
+## 0.0.2
+
+### Patch Changes
+
+- Updated dependencies [1d755c1]
+  - @json-render/core@0.9.0
+  - @json-render/react@0.9.0

examples/stripe-app/drawer-app/eslint.config.js

@@ -1,4 +1,4 @@
-import { config as reactConfig } from "@repo/eslint-config/react-internal";
+import { config as reactConfig } from "@internal/eslint-config/react-internal";
 
 /** @type {import("eslint").Linter.Config[]} */
 export default [

examples/stripe-app/drawer-app/package.json

@@ -1,6 +1,6 @@
 {
   "name": "com.example.json-render-demo",
-  "version": "0.0.1",
+  "version": "0.0.2",
   "description": "Test",
   "private": true,
   "license": "~~proprietary~~",
@@ -21,7 +21,7 @@
     "test": "jest"
   },
   "devDependencies": {
-    "@repo/eslint-config": "workspace:*",
+    "@internal/eslint-config": "workspace:*",
     "@stripe/ui-extension-tools": "^0.0.1",
     "eslint": "^9.39.0"
   }

examples/stripe-app/drawer-app/src/lib/config.ts

@@ -1 +1,2 @@
-export const API_GENERATE_URL = "http://localhost:3001/api/generate";
+export const API_GENERATE_URL =
+  "http://stripe-api-demo.json-render.localhost:1355/api/generate";

examples/stripe-app/drawer-app/src/lib/render/catalog.ts

@@ -1,5 +1,5 @@
 import { defineCatalog } from "@json-render/core";
-import { schema } from "@json-render/react";
+import { schema } from "@json-render/react/schema";
 import { z } from "zod";
 
 /**

examples/stripe-app/drawer-app/src/lib/render/renderer.tsx

@@ -27,7 +27,7 @@ export interface StripeRendererProps {
   /** Function to update data */
   setData?: SetState;
   /** Callback when data changes */
-  onStateChange?: (path: string, value: unknown) => void;
+  onStateChange?: (changes: Array<{ path: string; value: unknown }>) => void;
   /** Whether the spec is currently loading/streaming */
   loading?: boolean;
 }

examples/stripe-app/fullpage-app/CHANGELOG.md

@@ -0,0 +1,9 @@
+# com.example.json-render-fullpage-demo
+
+## 0.0.2
+
+### Patch Changes
+
+- Updated dependencies [1d755c1]
+  - @json-render/core@0.9.0
+  - @json-render/react@0.9.0

examples/stripe-app/fullpage-app/eslint.config.js

@@ -1,4 +1,4 @@
-import { config as reactConfig } from "@repo/eslint-config/react-internal";
+import { config as reactConfig } from "@internal/eslint-config/react-internal";
 
 /** @type {import("eslint").Linter.Config[]} */
 export default [

examples/stripe-app/fullpage-app/package.json

@@ -1,6 +1,6 @@
 {
   "name": "com.example.json-render-fullpage-demo",
-  "version": "0.0.1",
+  "version": "0.0.2",
   "description": "Full-page Stripe App example (alpha)",
   "private": true,
   "license": "~~proprietary~~",
@@ -21,7 +21,7 @@
     "test": "jest"
   },
   "devDependencies": {
-    "@repo/eslint-config": "workspace:*",
+    "@internal/eslint-config": "workspace:*",
     "@stripe/ui-extension-tools": "^0.0.1",
     "eslint": "^9.39.0"
   }

examples/stripe-app/fullpage-app/src/lib/config.ts

@@ -1 +1,2 @@
-export const API_GENERATE_URL = "http://localhost:3001/api/generate";
+export const API_GENERATE_URL =
+  "http://stripe-api-demo.json-render.localhost:1355/api/generate";

examples/stripe-app/fullpage-app/src/lib/render/catalog.ts

@@ -1,5 +1,5 @@
 import { defineCatalog } from "@json-render/core";
-import { schema } from "@json-render/react";
+import { schema } from "@json-render/react/schema";
 import { z } from "zod";
 
 /**

examples/stripe-app/fullpage-app/src/lib/render/renderer.tsx

@@ -27,7 +27,7 @@ export interface StripeRendererProps {
   /** Function to update data */
   setData?: SetState;
   /** Callback when data changes */
-  onStateChange?: (path: string, value: unknown) => void;
+  onStateChange?: (changes: Array<{ path: string; value: unknown }>) => void;
   /** Whether the spec is currently loading/streaming */
   loading?: boolean;
 }

package.json

@@ -20,6 +20,7 @@
     "test": "vitest run",
     "test:watch": "vitest",
     "test:coverage": "vitest run --coverage",
+    "test:e2e": "pnpm --filter e2e-tests test",
     "prepare": "husky",
     "changeset": "changeset",
     "ci:version": "changeset version && pnpm install --no-frozen-lockfile",

packages/codegen/CHANGELOG.md

@@ -1,5 +1,48 @@
 # @json-render/codegen
 
+## 0.9.0
+
+### Minor Changes
+
+- 1d755c1: External state store, store adapters, and bug fixes.
+
+  ### New: External State Store
+
+  The `StateStore` interface lets you plug in your own state management (Redux, Zustand, Jotai, XState, etc.) instead of the built-in internal store. Pass a `store` prop to `StateProvider`, `JSONUIProvider`, or `createRenderer` for controlled mode.
+  - Added `StateStore` interface and `createStateStore()` factory to `@json-render/core`
+  - `StateProvider`, `JSONUIProvider`, and `createRenderer` now accept an optional `store` prop for controlled mode
+  - When `store` is provided, it becomes the single source of truth (`initialState`/`onStateChange` are ignored)
+  - When `store` is omitted, everything works exactly as before (fully backward compatible)
+  - Applied across all platform packages: react, react-native, react-pdf
+  - Store utilities (`createStoreAdapter`, `immutableSetByPath`, `flattenToPointers`) available via `@json-render/core/store-utils` for building custom adapters
+
+  ### New: Store Adapter Packages
+  - `@json-render/zustand` — Zustand adapter for `StateStore`
+  - `@json-render/redux` — Redux / Redux Toolkit adapter for `StateStore`
+  - `@json-render/jotai` — Jotai adapter for `StateStore`
+
+  ### Changed: `onStateChange` signature updated (breaking)
+
+  The `onStateChange` callback now receives a single array of changed entries instead of being called once per path:
+
+  ```ts
+  // Before
+  onStateChange?: (path: string, value: unknown) => void
+
+  // After
+  onStateChange?: (changes: Array<{ path: string; value: unknown }>) => void
+  ```
+
+  ### Fixed
+  - Fix schema import to use server-safe `@json-render/react/schema` subpath, avoiding `createContext` crashes in Next.js App Router API routes
+  - Fix chaining actions in `@json-render/react`, `@json-render/react-native`, and `@json-render/react-pdf`
+  - Fix safely resolving inner type for Zod arrays in core schema
+
+### Patch Changes
+
+- Updated dependencies [1d755c1]
+  - @json-render/core@0.9.0
+
 ## 0.8.0
 
 ### Patch Changes

packages/codegen/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@json-render/codegen",
-  "version": "0.8.0",
+  "version": "0.9.0",
   "license": "Apache-2.0",
   "description": "Utilities for generating code from json-render UI trees",
   "keywords": [
@@ -44,7 +44,7 @@
     "@json-render/core": "workspace:*"
   },
   "devDependencies": {
-    "@repo/typescript-config": "workspace:*",
+    "@internal/typescript-config": "workspace:*",
     "tsup": "^8.0.2",
     "typescript": "^5.4.5"
   }

packages/codegen/tsconfig.json

@@ -1,5 +1,5 @@
 {
-  "extends": "@repo/typescript-config/base.json",
+  "extends": "@internal/typescript-config/base.json",
   "compilerOptions": {
     "outDir": "dist",
     "rootDir": "src"

packages/core/CHANGELOG.md

@@ -1,5 +1,43 @@
 # @json-render/core
 
+## 0.9.0
+
+### Minor Changes
+
+- 1d755c1: External state store, store adapters, and bug fixes.
+
+  ### New: External State Store
+
+  The `StateStore` interface lets you plug in your own state management (Redux, Zustand, Jotai, XState, etc.) instead of the built-in internal store. Pass a `store` prop to `StateProvider`, `JSONUIProvider`, or `createRenderer` for controlled mode.
+  - Added `StateStore` interface and `createStateStore()` factory to `@json-render/core`
+  - `StateProvider`, `JSONUIProvider`, and `createRenderer` now accept an optional `store` prop for controlled mode
+  - When `store` is provided, it becomes the single source of truth (`initialState`/`onStateChange` are ignored)
+  - When `store` is omitted, everything works exactly as before (fully backward compatible)
+  - Applied across all platform packages: react, react-native, react-pdf
+  - Store utilities (`createStoreAdapter`, `immutableSetByPath`, `flattenToPointers`) available via `@json-render/core/store-utils` for building custom adapters
+
+  ### New: Store Adapter Packages
+  - `@json-render/zustand` — Zustand adapter for `StateStore`
+  - `@json-render/redux` — Redux / Redux Toolkit adapter for `StateStore`
+  - `@json-render/jotai` — Jotai adapter for `StateStore`
+
+  ### Changed: `onStateChange` signature updated (breaking)
+
+  The `onStateChange` callback now receives a single array of changed entries instead of being called once per path:
+
+  ```ts
+  // Before
+  onStateChange?: (path: string, value: unknown) => void
+
+  // After
+  onStateChange?: (changes: Array<{ path: string; value: unknown }>) => void
+  ```
+
+  ### Fixed
+  - Fix schema import to use server-safe `@json-render/react/schema` subpath, avoiding `createContext` crashes in Next.js App Router API routes
+  - Fix chaining actions in `@json-render/react`, `@json-render/react-native`, and `@json-render/react-pdf`
+  - Fix safely resolving inner type for Zod arrays in core schema
+
 ## 0.8.0
 
 ### Minor Changes

packages/core/README.md

@@ -221,6 +221,63 @@ Schema options:
 
 The transform splits text blocks around spec data by emitting `text-end`/`text-start` pairs, ensuring the AI SDK creates separate text parts and preserving correct interleaving of prose and UI in `message.parts`.
 
+### State Store
+
+| Export | Purpose |
+|--------|---------|
+| `createStateStore(initialState?)` | Create a framework-agnostic in-memory `StateStore` |
+| `StateStore` | Interface for plugging in external state management (Redux, Zustand, XState, etc.) |
+| `StateModel` | State model type (`Record<string, unknown>`) |
+
+The `StateStore` interface allows renderers to use external state management instead of the built-in internal store:
+
+```typescript
+import { createStateStore, type StateStore } from "@json-render/core";
+
+// Simple in-memory store
+const store = createStateStore({ count: 0 });
+
+store.get("/count");          // 0
+store.set("/count", 1);       // updates and notifies subscribers
+store.getSnapshot();          // { count: 1 }
+
+// Subscribe to changes (compatible with React's useSyncExternalStore)
+const unsubscribe = store.subscribe(() => {
+  console.log("state changed:", store.getSnapshot());
+});
+```
+
+Pass the store to `StateProvider` in any renderer package (`@json-render/react`, `@json-render/react-native`, `@json-render/react-pdf`) for controlled mode.
+
+### Store Utilities (for adapter authors)
+
+Available via `@json-render/core/store-utils`:
+
+| Export | Purpose |
+|--------|---------|
+| `createStoreAdapter(config)` | Build a full `StateStore` from a minimal `{ getSnapshot, setSnapshot, subscribe }` config |
+| `immutableSetByPath(root, path, value)` | Immutably set a value at a JSON Pointer path with structural sharing |
+| `flattenToPointers(obj)` | Flatten a nested object into JSON Pointer keyed entries |
+| `StoreAdapterConfig` | Config type for `createStoreAdapter` |
+
+```typescript
+import { createStoreAdapter, immutableSetByPath, flattenToPointers } from "@json-render/core/store-utils";
+```
+
+`createStoreAdapter` handles `get`, `set` (with no-op detection), batched `update`, `getSnapshot`, `getServerSnapshot`, and `subscribe` -- adapter authors only need to supply the snapshot source, write API, and subscribe mechanism:
+
+```typescript
+import { createStoreAdapter } from "@json-render/core/store-utils";
+
+const store = createStoreAdapter({
+  getSnapshot: () => myLib.getState(),
+  setSnapshot: (next) => myLib.setState(next),
+  subscribe: (listener) => myLib.subscribe(listener),
+});
+```
+
+The official adapter packages (`@json-render/redux`, `@json-render/zustand`, `@json-render/jotai`) are all built on top of `createStoreAdapter`.
+
 ### Types
 
 | Export | Purpose |

packages/core/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@json-render/core",
-  "version": "0.8.0",
+  "version": "0.9.0",
   "license": "Apache-2.0",
   "description": "JSON becomes real things. Define your catalog, register your components, let AI generate.",
   "keywords": [
@@ -34,6 +34,11 @@
       "types": "./dist/index.d.ts",
       "import": "./dist/index.mjs",
       "require": "./dist/index.js"
+    },
+    "./store-utils": {
+      "types": "./dist/store-utils.d.ts",
+      "import": "./dist/store-utils.mjs",
+      "require": "./dist/store-utils.js"
     }
   },
   "files": [
@@ -48,7 +53,7 @@
     "zod": "^4.0.0"
   },
   "devDependencies": {
-    "@repo/typescript-config": "workspace:*",
+    "@internal/typescript-config": "workspace:*",
     "tsup": "^8.0.2",
     "typescript": "^5.4.5"
   },

packages/core/src/env.d.ts

@@ -0,0 +1,9 @@
+// Minimal process.env typing for dev-only warnings.
+// Uses a namespaced interface so it merges cleanly with @types/node if present.
+declare namespace NodeJS {
+  interface ProcessEnv {
+    readonly NODE_ENV?: string;
+  }
+}
+
+declare const process: { readonly env: NodeJS.ProcessEnv };

packages/core/src/index.ts

@@ -15,6 +15,7 @@ export type {
   AndCondition,
   OrCondition,
   StateModel,
+  StateStore,
   ComponentSchema,
   ValidationMode,
   PatchOp,
@@ -57,6 +58,10 @@ export {
   SPEC_DATA_PART_TYPE,
 } from "./types";
 
+// State Store
+export type { StoreAdapterConfig } from "./state-store";
+export { createStateStore } from "./state-store";
+
 // Visibility
 export type { VisibilityContext } from "./visibility";
 

packages/core/src/schema.test.ts

@@ -169,7 +169,11 @@ describe("catalog.prompt", () => {
     const catalog = defineCatalog(testSchema, {
       components: {
         Card: {
-          props: z.object({ title: z.string() }),
+          props: z.object({
+            title: z.string(),
+            names: z.array(z.string()),
+            users: z.array(z.object({ name: z.string(), age: z.number() })),
+          }),
           description: "A card container",
           slots: ["default"],
         },
@@ -180,6 +184,9 @@ describe("catalog.prompt", () => {
     expect(prompt).toContain("AVAILABLE COMPONENTS");
     expect(prompt).toContain("Card");
     expect(prompt).toContain("A card container");
+    expect(prompt).toContain("title: string");
+    expect(prompt).toContain("names: Array<string>");
+    expect(prompt).toContain("users: Array<{ name: string, age: number }>");
   });
 
   it("includes AVAILABLE ACTIONS when present", () => {

packages/core/src/schema.ts

@@ -1188,7 +1188,14 @@ function formatZodType(schema: z.ZodType): string {
     }
     case "ZodArray":
     case "array": {
-      const inner = (def.type as z.ZodType) ?? (def.element as z.ZodType);
+      // safely resolve inner type for Zod arrays
+      const inner = (
+        typeof def.element === "object"
+          ? def.element
+          : typeof def.type === "object"
+            ? def.type
+            : undefined
+      ) as z.ZodType | undefined;
       return inner ? `Array<${formatZodType(inner)}>` : "Array<unknown>";
     }
     case "ZodObject":

packages/core/src/state-store.test.ts

@@ -0,0 +1,213 @@
+import { describe, it, expect, vi } from "vitest";
+import { createStateStore, flattenToPointers } from "./state-store";
+
+describe("createStateStore", () => {
+  it("creates a store with initial state", () => {
+    const store = createStateStore({ name: "test" });
+    expect(store.getSnapshot()).toEqual({ name: "test" });
+    expect(store.get("/name")).toBe("test");
+  });
+
+  it("set notifies subscribers", () => {
+    const store = createStateStore({});
+    const listener = vi.fn();
+    store.subscribe(listener);
+
+    store.set("/x", 1);
+
+    expect(listener).toHaveBeenCalledTimes(1);
+    expect(store.get("/x")).toBe(1);
+  });
+
+  it("set skips notification when value is unchanged", () => {
+    const store = createStateStore({ x: 1 });
+    const listener = vi.fn();
+    store.subscribe(listener);
+
+    store.set("/x", 1);
+
+    expect(listener).not.toHaveBeenCalled();
+    expect(store.getSnapshot()).toEqual({ x: 1 });
+  });
+
+  it("update notifies subscribers once", () => {
+    const store = createStateStore({});
+    const listener = vi.fn();
+    store.subscribe(listener);
+
+    store.update({ "/a": 1, "/b": 2 });
+
+    expect(listener).toHaveBeenCalledTimes(1);
+    expect(store.get("/a")).toBe(1);
+    expect(store.get("/b")).toBe(2);
+  });
+
+  it("update skips notification when no values changed", () => {
+    const store = createStateStore({ a: 1, b: 2 });
+    const listener = vi.fn();
+    store.subscribe(listener);
+
+    store.update({ "/a": 1, "/b": 2 });
+
+    expect(listener).not.toHaveBeenCalled();
+  });
+
+  it("unsubscribe stops notifications", () => {
+    const store = createStateStore({});
+    const listener = vi.fn();
+    const unsubscribe = store.subscribe(listener);
+
+    store.set("/x", 1);
+    expect(listener).toHaveBeenCalledTimes(1);
+
+    unsubscribe();
+    store.set("/x", 2);
+    expect(listener).toHaveBeenCalledTimes(1);
+  });
+
+  it("getSnapshot returns a new reference after mutation", () => {
+    const store = createStateStore({ x: 1 });
+    const snap1 = store.getSnapshot();
+
+    store.set("/x", 2);
+    const snap2 = store.getSnapshot();
+
+    expect(snap1).not.toBe(snap2);
+    expect(snap2.x).toBe(2);
+  });
+
+  it("getSnapshot returns same reference when set is a no-op", () => {
+    const store = createStateStore({ x: 1 });
+    const snap1 = store.getSnapshot();
+
+    store.set("/x", 1);
+    const snap2 = store.getSnapshot();
+
+    expect(snap1).toBe(snap2);
+  });
+
+  it("set on nested path does not mutate previous snapshot", () => {
+    const store = createStateStore({ user: { name: "Alice", age: 30 } });
+    const snap1 = store.getSnapshot();
+
+    store.set("/user/name", "Bob");
+    const snap2 = store.getSnapshot();
+
+    expect(snap1.user).toEqual({ name: "Alice", age: 30 });
+    expect((snap2.user as Record<string, unknown>).name).toBe("Bob");
+    expect(snap1.user).not.toBe(snap2.user);
+  });
+
+  it("update on nested paths does not mutate previous snapshot", () => {
+    const store = createStateStore({
+      user: { name: "Alice" },
+      meta: { version: 1 },
+    });
+    const snap1 = store.getSnapshot();
+
+    store.update({ "/user/name": "Bob", "/meta/version": 2 });
+    const snap2 = store.getSnapshot();
+
+    expect((snap1.user as Record<string, unknown>).name).toBe("Alice");
+    expect((snap1.meta as Record<string, unknown>).version).toBe(1);
+    expect((snap2.user as Record<string, unknown>).name).toBe("Bob");
+    expect((snap2.meta as Record<string, unknown>).version).toBe(2);
+  });
+
+  it("set preserves structural sharing for untouched branches", () => {
+    const store = createStateStore({
+      a: { x: 1 },
+      b: { y: 2 },
+    });
+    const snap1 = store.getSnapshot();
+
+    store.set("/a/x", 99);
+    const snap2 = store.getSnapshot();
+
+    expect(snap2.b).toBe(snap1.b);
+    expect(snap2.a).not.toBe(snap1.a);
+  });
+
+  it("getServerSnapshot returns the same state as getSnapshot", () => {
+    const store = createStateStore({ x: 1 });
+    expect(store.getServerSnapshot!()).toBe(store.getSnapshot());
+
+    store.set("/x", 2);
+    expect(store.getServerSnapshot!()).toBe(store.getSnapshot());
+  });
+});
+
+describe("flattenToPointers", () => {
+  it("flattens top-level keys", () => {
+    expect(flattenToPointers({ a: 1, b: "hello" })).toEqual({
+      "/a": 1,
+      "/b": "hello",
+    });
+  });
+
+  it("flattens nested plain objects", () => {
+    expect(flattenToPointers({ user: { name: "Alice", age: 30 } })).toEqual({
+      "/user/name": "Alice",
+      "/user/age": 30,
+    });
+  });
+
+  it("preserves arrays as leaf values", () => {
+    expect(flattenToPointers({ items: [1, 2, 3] })).toEqual({
+      "/items": [1, 2, 3],
+    });
+  });
+
+  it("preserves null as a leaf value", () => {
+    expect(flattenToPointers({ x: null })).toEqual({ "/x": null });
+  });
+
+  it("handles deeply nested objects", () => {
+    expect(flattenToPointers({ a: { b: { c: 42 } } })).toEqual({
+      "/a/b/c": 42,
+    });
+  });
+
+  it("returns empty object for empty input", () => {
+    expect(flattenToPointers({})).toEqual({});
+  });
+
+  it("handles mixed nesting", () => {
+    expect(
+      flattenToPointers({
+        count: 1,
+        user: { name: "Alice" },
+        tags: ["a", "b"],
+      }),
+    ).toEqual({
+      "/count": 1,
+      "/user/name": "Alice",
+      "/tags": ["a", "b"],
+    });
+  });
+
+  it("stops recursion on circular references via seen set", () => {
+    const obj: Record<string, unknown> = { name: "root" };
+    obj.self = obj;
+
+    const result = flattenToPointers(obj);
+
+    expect(result["/name"]).toBe("root");
+    expect(result["/self/name"]).toBe("root");
+    expect(result["/self/self"]).toBe(obj);
+  });
+
+  it("caps recursion at depth limit", () => {
+    let current: Record<string, unknown> = { leaf: true };
+    for (let i = 0; i < 25; i++) {
+      current = { nested: current };
+    }
+
+    const result = flattenToPointers(current);
+
+    const keys = Object.keys(result);
+    expect(keys.length).toBe(1);
+    const key = keys[0]!;
+    expect(key.split("/").length).toBeLessThanOrEqual(22);
+  });
+});

packages/core/src/state-store.ts

@@ -0,0 +1,231 @@
+import {
+  getByPath,
+  parseJsonPointer,
+  type StateModel,
+  type StateStore,
+} from "./types";
+
+/**
+ * Immutably set a value at a JSON Pointer path using structural sharing.
+ * Only objects along the path are shallow-cloned; untouched branches keep
+ * their original references.
+ */
+export function immutableSetByPath(
+  root: StateModel,
+  path: string,
+  value: unknown,
+): StateModel {
+  const segments = parseJsonPointer(path);
+  if (segments.length === 0) return root;
+
+  const result = { ...root };
+  let current: Record<string, unknown> = result;
+
+  for (let i = 0; i < segments.length - 1; i++) {
+    const seg = segments[i]!;
+    const child = current[seg];
+    if (Array.isArray(child)) {
+      current[seg] = [...child];
+    } else if (child !== null && typeof child === "object") {
+      current[seg] = { ...(child as Record<string, unknown>) };
+    } else {
+      const nextSeg = segments[i + 1];
+      current[seg] = nextSeg !== undefined && /^\d+$/.test(nextSeg) ? [] : {};
+    }
+    current = current[seg] as Record<string, unknown>;
+  }
+
+  const lastSeg = segments[segments.length - 1]!;
+  if (Array.isArray(current)) {
+    if (lastSeg === "-") {
+      (current as unknown[]).push(value);
+    } else {
+      (current as unknown[])[parseInt(lastSeg, 10)] = value;
+    }
+  } else {
+    current[lastSeg] = value;
+  }
+
+  return result;
+}
+
+/**
+ * Create a simple in-memory {@link StateStore}.
+ *
+ * This is the default store used by `StateProvider` when no external store is
+ * provided. It mirrors the previous `useState`-based behaviour but is
+ * framework-agnostic so it can also be used in tests or non-React contexts.
+ */
+export function createStateStore(initialState: StateModel = {}): StateStore {
+  let state: StateModel = { ...initialState };
+  const listeners = new Set<() => void>();
+
+  function notify() {
+    for (const listener of listeners) {
+      listener();
+    }
+  }
+
+  return {
+    get(path: string): unknown {
+      return getByPath(state, path);
+    },
+
+    set(path: string, value: unknown): void {
+      if (getByPath(state, path) === value) return;
+      state = immutableSetByPath(state, path, value);
+      notify();
+    },
+
+    update(updates: Record<string, unknown>): void {
+      let changed = false;
+      let next = state;
+      for (const [path, value] of Object.entries(updates)) {
+        if (getByPath(next, path) !== value) {
+          next = immutableSetByPath(next, path, value);
+          changed = true;
+        }
+      }
+      if (!changed) return;
+      state = next;
+      notify();
+    },
+
+    getSnapshot(): StateModel {
+      return state;
+    },
+
+    getServerSnapshot(): StateModel {
+      return state;
+    },
+
+    subscribe(listener: () => void): () => void {
+      listeners.add(listener);
+      return () => {
+        listeners.delete(listener);
+      };
+    },
+  };
+}
+
+/**
+ * Configuration for {@link createStoreAdapter}. Adapter authors supply these
+ * three callbacks; everything else (get, set, update, no-op detection,
+ * getServerSnapshot) is handled by the returned {@link StateStore}.
+ */
+export interface StoreAdapterConfig {
+  /** Return the current state snapshot from the underlying store. */
+  getSnapshot: () => StateModel;
+  /** Write a new state snapshot to the underlying store. */
+  setSnapshot: (next: StateModel) => void;
+  /** Subscribe to changes in the underlying store. Return an unsubscribe fn. */
+  subscribe: (listener: () => void) => () => void;
+}
+
+/**
+ * Build a full {@link StateStore} from a minimal adapter config.
+ *
+ * Handles `get`, `set` (with no-op detection), `update` (batched, with no-op
+ * detection), `getSnapshot`, `getServerSnapshot`, and `subscribe` -- so each
+ * adapter only needs to wire its snapshot source, write API, and subscribe
+ * mechanism.
+ */
+export function createStoreAdapter(config: StoreAdapterConfig): StateStore {
+  return {
+    get(path: string): unknown {
+      return getByPath(config.getSnapshot(), path);
+    },
+
+    set(path: string, value: unknown): void {
+      const current = config.getSnapshot();
+      if (getByPath(current, path) === value) return;
+      config.setSnapshot(immutableSetByPath(current, path, value));
+    },
+
+    update(updates: Record<string, unknown>): void {
+      let next = config.getSnapshot();
+      let changed = false;
+      for (const [path, value] of Object.entries(updates)) {
+        if (getByPath(next, path) !== value) {
+          next = immutableSetByPath(next, path, value);
+          changed = true;
+        }
+      }
+      if (!changed) return;
+      config.setSnapshot(next);
+    },
+
+    getSnapshot: config.getSnapshot,
+
+    getServerSnapshot: config.getSnapshot,
+
+    subscribe: config.subscribe,
+  };
+}
+
+const MAX_FLATTEN_DEPTH = 20;
+
+/**
+ * Recursively flatten a plain object into a `Record<string, unknown>` keyed by
+ * JSON Pointer paths. Only leaf values (non-plain-object) appear in the output.
+ *
+ * Includes circular reference protection and a depth cap to prevent stack
+ * overflow on pathological inputs.
+ *
+ * ```ts
+ * flattenToPointers({ user: { name: "Alice" }, count: 1 })
+ * // => { "/user/name": "Alice", "/count": 1 }
+ * ```
+ */
+export function flattenToPointers(
+  obj: Record<string, unknown>,
+  prefix = "",
+  _depth = 0,
+  _seen?: Set<object>,
+  _warned?: { current: boolean },
+): Record<string, unknown> {
+  const seen = _seen ?? new Set<object>();
+  const warned = _warned ?? { current: false };
+  const result: Record<string, unknown> = {};
+  for (const [key, value] of Object.entries(obj)) {
+    const pointer = `${prefix}/${key}`;
+    if (
+      _depth < MAX_FLATTEN_DEPTH &&
+      value !== null &&
+      typeof value === "object" &&
+      !Array.isArray(value) &&
+      Object.getPrototypeOf(value) === Object.prototype &&
+      !seen.has(value)
+    ) {
+      seen.add(value);
+      Object.assign(
+        result,
+        flattenToPointers(
+          value as Record<string, unknown>,
+          pointer,
+          _depth + 1,
+          seen,
+          warned,
+        ),
+      );
+    } else {
+      if (
+        process.env.NODE_ENV !== "production" &&
+        !warned.current &&
+        _depth >= MAX_FLATTEN_DEPTH &&
+        value !== null &&
+        typeof value === "object" &&
+        !Array.isArray(value) &&
+        Object.getPrototypeOf(value) === Object.prototype &&
+        !seen.has(value as object)
+      ) {
+        warned.current = true;
+        console.warn(
+          `flattenToPointers: depth limit (${MAX_FLATTEN_DEPTH}) reached. Nested state beyond this depth will be treated as a leaf value.`,
+        );
+      }
+      result[pointer] = value;
+    }
+  }
+  return result;
+}

packages/core/src/store-utils.ts

@@ -0,0 +1,6 @@
+export {
+  immutableSetByPath,
+  flattenToPointers,
+  createStoreAdapter,
+} from "./state-store";
+export type { StoreAdapterConfig } from "./state-store";

packages/core/src/types.ts

@@ -178,6 +178,36 @@ export interface Spec {
  */
 export type StateModel = Record<string, unknown>;
 
+/**
+ * An abstract store that owns state and notifies subscribers on change.
+ *
+ * Consumers can supply their own implementation (backed by Redux, Zustand,
+ * XState, etc.) or use the built-in {@link createStateStore} for a simple
+ * in-memory store.
+ */
+export interface StateStore {
+  /** Read a value by JSON Pointer path. */
+  get: (path: string) => unknown;
+  /**
+   * Write a value by JSON Pointer path and notify subscribers.
+   * Equality is checked by reference (`===`), not deep comparison.
+   * Callers must pass a new object/array reference for changes to be detected.
+   */
+  set: (path: string, value: unknown) => void;
+  /**
+   * Write multiple values at once and notify subscribers (single notification).
+   * Each value is compared by reference (`===`); only paths whose value
+   * actually changed are applied.
+   */
+  update: (updates: Record<string, unknown>) => void;
+  /** Return the full state object (used by `useSyncExternalStore`). */
+  getSnapshot: () => StateModel;
+  /** Optional server snapshot for SSR (passed to `useSyncExternalStore`). Falls back to `getSnapshot` when omitted. */
+  getServerSnapshot?: () => StateModel;
+  /** Register a listener that is called on every state change. Returns an unsubscribe function. */
+  subscribe: (listener: () => void) => () => void;
+}
+
 /**
  * Component schema definition using Zod
  */
@@ -236,7 +266,7 @@ function unescapeJsonPointer(token: string): string {
 /**
  * Parse a JSON Pointer path into unescaped segments.
  */
-function parseJsonPointer(path: string): string[] {
+export function parseJsonPointer(path: string): string[] {
   const raw = path.startsWith("/") ? path.slice(1).split("/") : path.split("/");
   return raw.map(unescapeJsonPointer);
 }

packages/core/tsconfig.json

@@ -1,5 +1,5 @@
 {
-  "extends": "@repo/typescript-config/react-library.json",
+  "extends": "@internal/typescript-config/react-library.json",
   "compilerOptions": {
     "outDir": "dist",
     "rootDir": "src"

packages/core/tsup.config.ts

@@ -1,7 +1,7 @@
 import { defineConfig } from "tsup";
 
 export default defineConfig({
-  entry: ["src/index.ts"],
+  entry: ["src/index.ts", "src/store-utils.ts"],
   format: ["cjs", "esm"],
   dts: true,
   sourcemap: true,

packages/eslint-config/package.json

@@ -1,5 +1,5 @@
 {
-  "name": "@repo/eslint-config",
+  "name": "@internal/eslint-config",
   "version": "0.0.0",
   "type": "module",
   "private": true,

packages/jotai/CHANGELOG.md

@@ -0,0 +1,44 @@
+# @json-render/jotai
+
+## 0.9.0
+
+### Minor Changes
+
+- 1d755c1: External state store, store adapters, and bug fixes.
+
+  ### New: External State Store
+
+  The `StateStore` interface lets you plug in your own state management (Redux, Zustand, Jotai, XState, etc.) instead of the built-in internal store. Pass a `store` prop to `StateProvider`, `JSONUIProvider`, or `createRenderer` for controlled mode.
+  - Added `StateStore` interface and `createStateStore()` factory to `@json-render/core`
+  - `StateProvider`, `JSONUIProvider`, and `createRenderer` now accept an optional `store` prop for controlled mode
+  - When `store` is provided, it becomes the single source of truth (`initialState`/`onStateChange` are ignored)
+  - When `store` is omitted, everything works exactly as before (fully backward compatible)
+  - Applied across all platform packages: react, react-native, react-pdf
+  - Store utilities (`createStoreAdapter`, `immutableSetByPath`, `flattenToPointers`) available via `@json-render/core/store-utils` for building custom adapters
+
+  ### New: Store Adapter Packages
+  - `@json-render/zustand` — Zustand adapter for `StateStore`
+  - `@json-render/redux` — Redux / Redux Toolkit adapter for `StateStore`
+  - `@json-render/jotai` — Jotai adapter for `StateStore`
+
+  ### Changed: `onStateChange` signature updated (breaking)
+
+  The `onStateChange` callback now receives a single array of changed entries instead of being called once per path:
+
+  ```ts
+  // Before
+  onStateChange?: (path: string, value: unknown) => void
+
+  // After
+  onStateChange?: (changes: Array<{ path: string; value: unknown }>) => void
+  ```
+
+  ### Fixed
+  - Fix schema import to use server-safe `@json-render/react/schema` subpath, avoiding `createContext` crashes in Next.js App Router API routes
+  - Fix chaining actions in `@json-render/react`, `@json-render/react-native`, and `@json-render/react-pdf`
+  - Fix safely resolving inner type for Zod arrays in core schema
+
+### Patch Changes
+
+- Updated dependencies [1d755c1]
+  - @json-render/core@0.9.0