Building Interactive Async UI with React 19 and Ariakit

Forget complex state management for async UI. Use React 19's `useOptimistic` hook for instant feedback with automatic rollback on error.

#1about 1 minute

Challenges of building custom interactive UI components

Three common problems are outlined: building custom UI from scratch, ensuring accessibility without being an expert, and handling async operations smoothly.

#2about 1 minute

Solving UI challenges with a modern tech stack

The solution involves using Tailwind CSS for styling, Ariakit for accessible component primitives, and React 19 features for managing asynchronous operations.

#3about 4 minutes

Analyzing the initial flawed component and its code

A demonstration and code walkthrough reveal a custom dropdown with accessibility issues, complex state management, and out-of-sync pending states.

#4about 7 minutes

Refactoring the UI with Ariakit for accessibility

The component is refactored by replacing standard divs with Ariakit's `Select` primitives, which automatically handle state, keyboard navigation, and ARIA attributes.

#5about 2 minutes

Managing async state with React 19 hooks

The component's asynchronous logic is improved by replacing manual pending states with `useTransition` and `useOptimistic` for smooth, instant UI feedback and automatic rollbacks.

#6about 4 minutes

Simplifying data updates with server functions

The traditional API layer is removed and replaced with React Server Functions, enabling direct, type-safe server calls from the client component.

#7about 2 minutes

Demonstrating the final interactive and accessible component

The final result is a fully interactive, accessible, and user-friendly dropdown component with smooth pending states and optimistic updates, built with minimal boilerplate.

#8about 3 minutes

Summary of benefits from Ariakit and React 19

A recap of how Ariakit provides accessibility and clean code, while React 19 streamlines server communication and simplifies loading states for a better user experience.