structyl is an open-source, TypeScript-first React component library with 90+ accessible components. It combines WAI-ARIA compliant headless primitives with Tailwind CSS v4 styled wrappers, a runtime theming system, and a first-class DataTable — all in independently-versioned npm packages.

How does structyl differ from shadcn/ui?

structyl ships as actual npm packages (pnpm add @structyl/styled) rather than copy-paste code snippets. It adds a runtime theming system that switches themes without a page reload, a feature-complete DataTable, 24+ React hooks, and 90+ components — significantly more than shadcn/ui out of the box.

How does structyl compare to Radix UI?

structyl builds on the same headless-first philosophy as Radix UI but adds a complete Tailwind-styled layer, runtime theming with CSS variables, dark mode, a DataTable, and chart components. Radix is primitives-only; structyl is a full component library ready to use.

Is structyl compatible with Next.js App Router?

Yes. All structyl components that use React hooks are marked with 'use client'. The library is SSR-safe and fully compatible with Next.js 15 App Router and React Server Components.

Does structyl support dark mode?

Yes. structyl includes a ThemeProvider that supports system, light, and dark modes. Theme switches happen instantly using CSS custom properties — no page reload required and no flash of unstyled content.

How do I install structyl?

Install the main package with: pnpm add @structyl/styled (or npm install @structyl/styled). Then wrap your app in ThemeProvider from @structyl/themes and add Toaster from @structyl/styled to your root layout.

Is structyl free and open source?

Yes. structyl is MIT licensed and completely free. All packages are published to npm under the @structyl scope.

Does structyl support TypeScript?

Yes. structyl is built with TypeScript strict mode throughout. All components export their prop types and the library ships with full type definitions. There is no any usage in the public API.

What styling system does structyl use?

structyl uses Tailwind CSS v4 for styling, tailwind-variants for type-safe variant APIs, and tailwind-merge for class conflict resolution. All colors and design tokens are CSS custom properties that integrate with the runtime theming system.

Does structyl have a DataTable component?

Yes. structyl includes a first-class DataTable in the @structyl/data-table package, built on @tanstack/table-core. It supports sorting, multi-column filtering, pagination, row selection, column resizing, and row virtualization via @tanstack/react-virtual.

Alert API

View component

The full prop reference for the Alert component. Displays a callout for user attention.

Import

tsx

import { Alert } from '@structyl/styled';

Props

Alert

Convenience compound alert component with built-in icon, title, description, and optional close button.

Prop	Type	Default
variant#	`'default' \| 'success' \| 'warning' \| 'destructive' \| 'info' \| 'error'` Visual style variant of the alert	'default'
color#	`'primary' \| 'secondary' \| 'error' \| 'warning' \| 'info' \| 'success' \| 'default'` Color scheme for the alert (used in compound variants)	—
filled#	`boolean` Whether the alert background is filled (used with color variant)	—
icon#	`React.ReactNode` Icon/element to display on the left side of the alert	—
title#	`React.ReactNode` Title text or element to display in the alert	—
description#	`React.ReactNode` Description text or element to display below title	—
closeable#	`boolean` Whether to display a close button (top-right)	—
onClose#	`() => void` Callback fired when close button is clicked; also triggers close button display	—
className#	`string` Additional CSS classes to merge with component styles	—
children#	`React.ReactNode` Content rendered inside the alert (after description if provided)	—
ref#	`React.Ref<HTMLDivElement>` Forward reference to underlying div element	—

Alert.Root

Base alert container supporting variant/color styling.

Prop	Type	Default
variant#	`'default' \| 'success' \| 'warning' \| 'destructive' \| 'info' \| 'error'` Visual style variant of the alert	'default'
color#	`'primary' \| 'secondary' \| 'error' \| 'warning' \| 'info' \| 'success' \| 'default'` Color scheme for the alert (used in compound variants)	—
filled#	`boolean` Whether the alert background is filled (used with color variant)	—
className#	`string` Additional CSS classes to merge with component styles	—
onClose#	`() => void` Callback for close action (destructured, does not reach DOM)	—
children#	`React.ReactNode` Content rendered inside the alert	—
ref#	`React.Ref<HTMLDivElement>` Forward reference to underlying div element	—

Alert.Icon

Container for alert icon or icon element, positioned on the left with spacing.

Prop	Type	Default
className#	`string` Additional CSS classes to merge with component styles	—
children#	`React.ReactNode` Icon element or SVG to display	—
ref#	`React.Ref<HTMLSpanElement>` Forward reference to underlying span element	—

Alert.Content

Wrapper div for alert text content (title, description, children).

Prop	Type	Default
className#	`string` Additional CSS classes to merge with component styles	—
children#	`React.ReactNode` Content to display inside the wrapper	—
ref#	`React.Ref<HTMLDivElement>` Forward reference to underlying div element	—

Alert.Title

Heading element for alert title text.

Prop	Type	Default
className#	`string` Additional CSS classes to merge with component styles	—
children#	`React.ReactNode` Title text or element	—
ref#	`React.Ref<HTMLHeadingElement>` Forward reference to underlying h5 element	—

Alert.Description

Container for alert description text, with reduced opacity.

Prop	Type	Default
className#	`string` Additional CSS classes to merge with component styles	—
children#	`React.ReactNode` Description text or element	—
ref#	`React.Ref<HTMLDivElement>` Forward reference to underlying div element	—

Alert.Close

Close button for dismissing the alert (positioned top-right).

Prop	Type	Default
className#	`string` Additional CSS classes to merge with component styles	—
onClick#	`(e: React.MouseEvent<HTMLButtonElement>) => void` Callback fired when close button is clicked	—
ref#	`React.Ref<HTMLButtonElement>` Forward reference to underlying button element	—

Source code

If you didn't find what you need here, read the component implementation .