
Developed a framework-agnostic UI rendering core and a Svelte 5 renderer within the thesysdev/crayon repository, enabling structured UI generation from LLM outputs across both React and Svelte environments. The work involved extracting core logic into a new shared package, facilitating unified parsing, prompt generation, and validation for multiple adapters. Leveraging JavaScript, TypeScript, and SvelteKit, the developer introduced a Svelte adapter and updated the React integration to consume the shared core while maintaining a stable public API. A SvelteKit demo showcased component-based UI with robust error handling, and comprehensive test migration improved maintainability, resulting in 30 passing tests.
March 2026 (2026-03): Delivered a framework-agnostic UI rendering core and a Svelte 5 renderer to enable structured UI rendering from LLM outputs across React and Svelte. This involved extracting core functionality into a new @openuidev/lang-core package and introducing the Svelte adapter @openuidev/svelte-lang, with React adapters updated to consume the shared core. A SvelteKit demo (svelte-chat) showcases mock streaming and component-based UI (Stack, Card, TextContent, Button) with robust error handling. The effort included upgrading testing and lint infrastructure, migrating tests to lang-core, and delivering 30 passing tests to validate the new architecture. Public API remains stable for existing clients, while enabling faster cross-framework iteration and a more maintainable UI rendering stack.
March 2026 (2026-03): Delivered a framework-agnostic UI rendering core and a Svelte 5 renderer to enable structured UI rendering from LLM outputs across React and Svelte. This involved extracting core functionality into a new @openuidev/lang-core package and introducing the Svelte adapter @openuidev/svelte-lang, with React adapters updated to consume the shared core. A SvelteKit demo (svelte-chat) showcases mock streaming and component-based UI (Stack, Card, TextContent, Button) with robust error handling. The effort included upgrading testing and lint infrastructure, migrating tests to lang-core, and delivering 30 passing tests to validate the new architecture. Public API remains stable for existing clients, while enabling faster cross-framework iteration and a more maintainable UI rendering stack.

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