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.

Resizable API

View component

The full prop reference for the Resizable component. Resizable panel groups with draggable handles.

Import

tsx

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

Props

Resizable.Group

Container for resizable panels with drag handles. Manages layout direction and panel size state.

Prop	Type	Default
direction#	`'horizontal' \| 'vertical'` Direction of the panel layout (horizontal = left/right, vertical = up/down)	'horizontal'
onLayout#	`(sizes: number[]) => void` Callback fired when panel sizes change, receives array of all panel sizes in order	—
asChild#	`boolean` If true, renders the primitive's child element instead of a div wrapper (Radix-style asChild)	—
className#	`string` CSS class names; styled version defaults to 'flex h-full w-full' plus custom classes	—
ref#	`React.Ref<HTMLDivElement>` Forward ref to the underlying div element	—
...htmlAttributes#	`React.ComponentPropsWithoutRef<'div'>` All standard HTML div attributes (style, id, data-*, event handlers, etc.)	—

Resizable.Panel

Individual resizable panel within a Group. Expands/contracts based on handle drag interactions.

Prop	Type	Default
id#	`string` Required unique identifier for the panel, used in Handle 'between' prop	—
defaultSize#	`number` Initial flex size (0-100, treated as flex units); controls initial width/height ratio	50
minSize#	`number` Minimum allowed size; prevents resizing below this flex unit value	10
maxSize#	`number` Maximum allowed size; prevents resizing above this flex unit value	90
asChild#	`boolean` If true, renders the primitive's child element instead of a div wrapper	—
className#	`string` CSS class names for custom styling	—
ref#	`React.Ref<HTMLDivElement>` Forward ref to the underlying div element	—
...htmlAttributes#	`React.ComponentPropsWithoutRef<'div'>` All standard HTML div attributes; note tabIndex defaults to 0 for keyboard accessibility	—

Resizable.Handle

Draggable resize handle positioned between two panels. Emits size changes as user drags.

Prop	Type	Default
between#	`[string, string]` Required tuple of two panel IDs on each side of the handle; controls which panels resize together	—
withHandle#	`boolean` Styled version only: if true, renders a visual grip icon inside the handle	—
asChild#	`boolean` If true, renders the primitive's child element instead of a div wrapper	—
className#	`string` CSS class names; styled version defaults to flex styling with border and focus ring	—
ref#	`React.Ref<HTMLDivElement>` Forward ref to the underlying div element	—
...htmlAttributes#	`React.ComponentPropsWithoutRef<'div'>` All standard HTML div attributes; handle has role='separator', aria-orientation set automatically, tabIndex defaults to 0	—

Source code

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