feat: shadcn-svelte renderer

.changeset/shy-donuts-add.md

@@ -0,0 +1,5 @@
+---
+"@json-render/shadcn-svelte": minor
+---
+
+Add a new `@json-render/shadcn-svelte` package with 36 pre-built shadcn-svelte components, catalog definitions, and Svelte renderer adapters for json-render.

.gitignore

@@ -27,6 +27,7 @@ out/
 build
 dist
 *.tsbuildinfo
+.svelte-kit/
 
 
 # Debug

README.md

@@ -9,6 +9,8 @@ Generate dynamic, personalized UIs from prompts without sacrificing reliability.
 npm install @json-render/core @json-render/react
 # for React with pre-built shadcn/ui components
 npm install @json-render/shadcn
+# for Svelte with pre-built shadcn-svelte components
+npm install @json-render/shadcn-svelte
 # or for React Native
 npm install @json-render/core @json-render/react-native
 # or for video
@@ -113,8 +115,10 @@ function Dashboard({ spec }) {
 |---------|-------------|
 | `@json-render/core` | Schemas, catalogs, AI prompts, dynamic props, SpecStream utilities |
 | `@json-render/react` | React renderer, contexts, hooks |
+| `@json-render/svelte` | Svelte 5 renderer, providers, and helpers |
 | `@json-render/vue` | Vue 3 renderer, composables, providers |
 | `@json-render/shadcn` | 36 pre-built shadcn/ui components (Radix UI + Tailwind CSS) |
+| `@json-render/shadcn-svelte` | 36 pre-built shadcn-svelte components (Svelte 5 + Tailwind CSS) |
 | `@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 |
@@ -394,8 +398,9 @@ pnpm dev
 - 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`
+- Svelte Example: run `pnpm dev` in `examples/svelte` or `examples/svelte-chat`
 - Vue Example: run `pnpm dev` in `examples/vue`
-- Vite Renderers (React + Vue): run `pnpm dev` in `examples/vite-renderers`
+- Vite Renderers (React + Vue + Svelte): run `pnpm dev` in `examples/vite-renderers`
 - React Native example: run `npx expo start` in `examples/react-native`
 
 ## How It Works

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

@@ -0,0 +1,59 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/shadcn-svelte")
+
+# @json-render/shadcn-svelte
+
+Pre-built [shadcn-svelte](https://www.shadcn-svelte.com/) components for json-render. 36 components built on Svelte 5 + Tailwind CSS, ready to use with `schema.createCatalog` and `defineRegistry`.
+
+## Installation
+
+```bash
+npm install @json-render/shadcn-svelte @json-render/core @json-render/svelte zod
+```
+
+Your app must have Tailwind CSS configured.
+
+## Entry Points
+
+| Entry Point | Exports | Use For |
+|-------------|---------|---------|
+| `@json-render/shadcn-svelte` | `shadcnComponents`, `shadcnComponentDefinitions` | Svelte implementations + shared definitions |
+| `@json-render/shadcn-svelte/catalog` | `shadcnComponentDefinitions` | Catalog schemas (server-safe, no renderer dependency) |
+
+## Usage
+
+Pick the components you need from the standard definitions:
+
+```typescript
+import { schema } from "@json-render/svelte/schema";
+import { shadcnComponentDefinitions } from "@json-render/shadcn-svelte/catalog";
+import { defineRegistry } from "@json-render/svelte";
+import { shadcnComponents } from "@json-render/shadcn-svelte";
+
+const catalog = schema.createCatalog({
+  components: {
+    Card: shadcnComponentDefinitions.Card,
+    Stack: shadcnComponentDefinitions.Stack,
+    Heading: shadcnComponentDefinitions.Heading,
+    Button: shadcnComponentDefinitions.Button,
+    Input: shadcnComponentDefinitions.Input,
+  },
+  actions: {},
+});
+
+const { registry } = defineRegistry(catalog, {
+  components: {
+    Card: shadcnComponents.Card,
+    Stack: shadcnComponents.Stack,
+    Heading: shadcnComponents.Heading,
+    Button: shadcnComponents.Button,
+    Input: shadcnComponents.Input,
+  },
+});
+```
+
+## Notes
+
+- Built-in state actions (`setState`, `pushState`, `removeState`, `validateForm`) come from `@json-render/svelte`
+- Components rely on Tailwind utility classes and design tokens
+- Form components support `checks` and `validateOn` validation timing

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

@@ -0,0 +1,126 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/svelte")
+
+# @json-render/svelte
+
+Svelte 5 components, providers, and helpers for rendering json-render specs.
+
+## Installation
+
+<PackageInstall packages="@json-render/core @json-render/svelte" />
+
+Peer dependencies: `svelte ^5.0.0` and `zod ^4.0.0`.
+
+<PackageInstall packages="svelte zod" />
+
+## Components
+
+### Renderer
+
+```svelte
+<Renderer
+  spec={spec}       // Spec | null
+  registry={registry}
+  loading={false}
+/>
+```
+
+Renders a spec with your component registry. If `spec` is `null`, it renders nothing.
+
+### JsonUIProvider
+
+Convenience wrapper around `StateProvider`, `VisibilityProvider`, `ValidationProvider`, and `ActionProvider`.
+
+```svelte
+<JsonUIProvider
+  initialState={{}}
+  handlers={handlers}
+  validationFunctions={validationFunctions}
+>
+  <Renderer {spec} {registry} />
+</JsonUIProvider>
+```
+
+## defineRegistry
+
+Create a typed component registry and action handlers from a catalog.
+
+```typescript
+import { defineRegistry } from "@json-render/svelte";
+
+const { registry, handlers, executeAction } = defineRegistry(catalog, {
+  components: {
+    Card,
+    Button,
+  },
+  actions: {
+    submit: async (params, setState, state) => {
+      // custom action logic
+    },
+  },
+});
+```
+
+`handlers` is designed for `JsonUIProvider`/`ActionProvider`. `executeAction` is an imperative helper.
+
+## Component Props
+
+Registry components receive `BaseComponentProps<TProps>`:
+
+```typescript
+interface BaseComponentProps<TProps> {
+  props: TProps;
+  children?: Snippet;
+  emit: (event: string) => void;
+  bindings?: Record<string, string>;
+  loading?: boolean;
+}
+```
+
+Use `emit("eventName")` to trigger handlers declared in the spec `on` bindings.
+
+## Context Helpers
+
+Use these helpers inside Svelte components:
+
+- `getStateValue(path)` - read/write state via `.current`
+- `getBoundProp(() => value, () => bindingPath)` - write back resolved `$bindState` / `$bindItem` values
+- `isVisible(condition)` - evaluate visibility via `.current`
+- `getAction(name)` - read a registered action handler via `.current`
+- `getFieldValidation(ctx, path, config)` - get field validation state + actions
+
+For advanced usage, access full contexts:
+
+- `getStateContext()`
+- `getActionContext()`
+- `getVisibilityContext()`
+- `getValidationContext()`
+- `getOptionalValidationContext()`
+
+## Streaming
+
+### createUIStream
+
+```typescript
+const stream = createUIStream({
+  api: "/api/generate-ui",
+  onComplete: (spec) => console.log(spec),
+});
+
+await stream.send("Create a login form");
+
+console.log(stream.spec);
+console.log(stream.isStreaming);
+```
+
+### createChatUI
+
+```typescript
+const chat = createChatUI({ api: "/api/chat-ui" });
+await chat.send("Build a settings panel");
+console.log(chat.messages, chat.isStreaming);
+```
+
+## Schema Export
+
+Use `schema` from `@json-render/svelte` when defining catalogs for Svelte specs.

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

@@ -21,6 +21,14 @@ Peer dependencies: `vue ^3.5.0` and `zod ^4.0.0`.
 
 <PackageInstall packages="vue zod" />
 
+## For Svelte
+
+<PackageInstall packages="@json-render/core @json-render/svelte" />
+
+Peer dependencies: `svelte ^5.0.0` and `zod ^4.0.0`.
+
+<PackageInstall packages="svelte zod" />
+
 ## For React UI with shadcn/ui
 
 Pre-built components for fast prototyping and production use:

apps/web/lib/docs-navigation.ts

@@ -69,13 +69,18 @@ export const docsNavigation: NavSection[] = [
         href: "https://github.com/vercel-labs/json-render/tree/main/examples/remotion",
         external: true,
       },
+      {
+        title: "Svelte",
+        href: "https://github.com/vercel-labs/json-render/tree/main/examples/svelte",
+        external: true,
+      },
       {
         title: "Vue",
         href: "https://github.com/vercel-labs/json-render/tree/main/examples/vue",
         external: true,
       },
       {
-        title: "Renders with Vite (Vue / React)",
+        title: "Renders with Vite (Vue / React / Svelte)",
         href: "https://github.com/vercel-labs/json-render/tree/main/examples/vite-renderers",
         external: true,
       },
@@ -105,9 +110,11 @@ export const docsNavigation: NavSection[] = [
       { title: "@json-render/react", href: "/docs/api/react" },
       { title: "@json-render/react-pdf", href: "/docs/api/react-pdf" },
       { title: "@json-render/shadcn", href: "/docs/api/shadcn" },
+      { title: "@json-render/shadcn-svelte", href: "/docs/api/shadcn-svelte" },
       { title: "@json-render/react-native", href: "/docs/api/react-native" },
       { title: "@json-render/remotion", href: "/docs/api/remotion" },
       { title: "@json-render/vue", href: "/docs/api/vue" },
+      { title: "@json-render/svelte", href: "/docs/api/svelte" },
       { title: "@json-render/codegen", href: "/docs/api/codegen" },
     ],
   },

apps/web/lib/page-titles.ts

@@ -43,9 +43,11 @@ export const PAGE_TITLES: Record<string, string> = {
   "docs/api/vue": "@json-render/vue API",
   "docs/api/react-pdf": "@json-render/react-pdf API",
   "docs/api/react-native": "@json-render/react-native API",
+  "docs/api/svelte": "@json-render/svelte API",
   "docs/api/codegen": "@json-render/codegen API",
   "docs/api/remotion": "@json-render/remotion API",
   "docs/api/shadcn": "@json-render/shadcn API",
+  "docs/api/shadcn-svelte": "@json-render/shadcn-svelte API",
 };
 
 /**

examples/svelte-chat/.gitignore

@@ -0,0 +1,23 @@
+node_modules
+
+# Output
+.output
+.vercel
+.netlify
+.wrangler
+/.svelte-kit
+/build
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Env
+.env
+.env.*
+!.env.example
+!.env.test
+
+# Vite
+vite.config.js.timestamp-*
+vite.config.ts.timestamp-*

examples/svelte-chat/.npmrc

@@ -0,0 +1 @@
+engine-strict=true

examples/svelte-chat/README.md

@@ -0,0 +1,42 @@
+# sv
+
+Everything you need to build a Svelte project, powered by [`sv`](https://github.com/sveltejs/cli).
+
+## Creating a project
+
+If you're seeing this, you've probably already done this step. Congrats!
+
+```sh
+# create a new project
+npx sv create my-app
+```
+
+To recreate this project with the same configuration:
+
+```sh
+# recreate this project
+npx sv create --template minimal --types ts --no-install svelte-chat
+```
+
+## Developing
+
+Once you've created a project and installed dependencies with `npm install` (or `pnpm install` or `yarn`), start a development server:
+
+```sh
+npm run dev
+
+# or start the server and open the app in a new browser tab
+npm run dev -- --open
+```
+
+## Building
+
+To create a production version of your app:
+
+```sh
+npm run build
+```
+
+You can preview the production build with `npm run preview`.
+
+> To deploy your app, you may need to install an [adapter](https://svelte.dev/docs/kit/adapters) for your target environment.

examples/svelte-chat/components.json

@@ -0,0 +1,16 @@
+{
+	"$schema": "https://shadcn-svelte.com/schema.json",
+	"tailwind": {
+		"css": "src/app.css",
+		"baseColor": "zinc"
+	},
+	"aliases": {
+		"components": "$lib/components",
+		"utils": "$lib/utils",
+		"ui": "$lib/components/ui",
+		"hooks": "$lib/hooks",
+		"lib": "$lib"
+	},
+	"typescript": true,
+	"registry": "https://shadcn-svelte.com/registry"
+}