react19

Implement React 19 design patterns for Envelope System UI components.

Updated Feb 12, 2026
One-click install
npx skills add https://github.com/tonyoconnell/agent-ui --skill react19
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: react19
Source: https://github.com/tonyoconnell/agent-ui/tree/main/.claude/skills/react19
Command: npx skills add https://github.com/tonyoconnell/agent-ui --skill react19

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

React 19 patterns for building Envelope System UIs, providing structured approaches to handle actions, asynchronous data with use(), smooth transitions, and ref-as-prop ergonomics.

Core Features & Use Cases

  • Actions for form handling to separate UI from business logic.
  • use() hook to read promises and context directly in components.
  • Transitions and ref-as-prop to enable responsive, accessible UIs with minimal boilerplate.
  • Optimistic updates to improve perceived performance during interactions.
  • Use Case: Build an Envelope System UI with forms, lists, and detail panels that update predictably.

Quick Start

Create a React 19 component that uses Actions for forms, the use() hook for data, and transitions for non-blocking updates.

Frequently Asked Questions about react19

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I use the React 19 use() hook for asynchronous data flow in components?

The React 19 use() hook reads promises and context directly within components to simplify asynchronous data flow. This approach enables predictable state management while separating data fetching logic from UI rendering.

What are React 19 Actions and how do they handle form submissions?

React 19 Actions handle form submissions by separating UI rendering from business logic. They provide structured approaches to manage form state, enabling predictable updates and robust typing across component architectures.

How do I implement optimistic UI updates for non-blocking transitions in React 19?

Optimistic UI updates in React 19 improve perceived performance by applying transitions that keep interfaces responsive. This pattern uses minimal boilerplate to enable smooth, non-blocking user interactions during data mutations.

Can I pass ref as a prop directly to React 19 components without forwardRef?

React 19 supports ref-as-prop ergonomics, allowing direct ref passing to components without forwardRef boilerplate. This feature streamlines component design while maintaining predictable state management and accessibility.

What is the best way to structure Envelope System UIs with React 19?

Building Envelope System UIs with React 19 involves using Actions for forms, the use() hook for data, and transitions for updates. This pattern ensures modularity, robust typing, and predictable state across lists and detail panels.