v0-12-release.md 1.2 KB


"@json-render/core": minor "@json-render/svelte": minor "@json-render/react-email": minor

"@json-render/mcp": minor

Add Svelte renderer, React Email renderer, and MCP Apps integration.

New:

  • @json-render/svelte — Svelte 5 renderer with runes-based reactivity. Full support for data binding, visibility, actions, validation, watchers, streaming, and repeat scopes. Includes defineRegistry, Renderer, schema, composables, and context providers.
  • @json-render/react-email — React Email renderer for generating HTML and plain-text emails from JSON specs. 17 standard components (Html, Head, Body, Container, Section, Row, Column, Heading, Text, Link, Button, Image, Hr, Preview, Markdown). Server-side renderToHtml / renderToPlainText APIs. Custom catalog and registry support.
  • @json-render/mcp — MCP Apps integration that serves json-render UIs as interactive apps inside Claude, ChatGPT, Cursor, VS Code, and other MCP-capable clients. createMcpApp server factory, useJsonRenderApp React hook for iframes, and buildAppHtml utility.

Fixed:

  • @json-render/svelte — Corrected JSDoc comment and added missing zod peer dependency.