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.

Popover API

View component

The full prop reference for the Popover component. Displays rich content in a portal, triggered by a button.

Import

tsx

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

Props

Root

Wrapper component that manages popover state and context

Prop	Type	Default
children#	`React.ReactNode` Child components (Trigger, Portal, Content, etc.)	—
open#	`boolean` Controlled open state	—
defaultOpen#	`boolean` Initial open state when uncontrolled	false
onOpenChange#	`(open: boolean) => void` Callback fired when open state changes	—
modal#	`boolean` Whether popover should act as a modal (traps focus, disables outside interactions)	false

Trigger

Button that toggles the popover open/closed

Prop	Type	Default
asChild#	`boolean` Render as child element instead of button	—
className#	`string` CSS class name	—
*#	`React.ComponentPropsWithoutRef<'button'>` All standard HTML button attributes (onClick, disabled, aria-*, etc.)	—

Anchor

Optional custom anchor point for positioning; without this, Trigger serves as the anchor

Prop	Type	Default
asChild#	`boolean` Render as child element instead of div	—
className#	`string` CSS class name	—
*#	`React.ComponentPropsWithoutRef<'div'>` All standard HTML div attributes	—

Portal

Container that portals the content to a DOM node (usually document.body)

Prop	Type	Default
children#	`React.ReactNode` Child content to portal	—
container#	`Element \| DocumentFragment \| null` DOM node to portal into; defaults to document.body	—
forceMount#	`boolean` Force mount content even when closed	—

Content

The popover panel with positioning, animations, and interaction handling; styled variant with defaults

Prop	Type	Default
className#	`string` CSS class name (merged with defaults)	—
container#	`Element \| DocumentFragment \| null` Portal container (styled wrapper convenience prop)	—
align#	`'start' \| 'center' \| 'end'` Alignment relative to anchor	'center'
sideOffset#	`number` Distance in pixels from anchor	6
side#	`'top' \| 'right' \| 'bottom' \| 'left'` Preferred side to display content	—
alignOffset#	`number` Offset along the alignment axis	—
arrowPadding#	`number` Padding between arrow and content edges	—
avoidCollisions#	`boolean` Auto-flip or adjust position to avoid collisions	—
collisionBoundary#	`Element \| Element[] \| null` Elements to check for collision against	—
collisionPadding#	`number` Padding around collision boundary	—
strategy#	`'fixed' \| 'absolute'` CSS positioning strategy	—
sticky#	`'partial' \| 'always'` Sticky behavior when scrolling parent	—
hideWhenDetached#	`boolean` Hide content when anchor is not in viewport	—
updatePositionStrategy#	`'always' \| 'optimized'` How often to update position on scroll/resize	—
forceMount#	`boolean` Force mount content even when closed	—
onOpenAutoFocus#	`(event: Event) => void` Callback before auto-focus when opening	—
onCloseAutoFocus#	`(event: Event) => void` Callback before auto-focus when closing	—
onEscapeKeyDown#	`(event: KeyboardEvent) => void` Callback when Escape key is pressed	—
onPointerDownOutside#	`(event: PointerDownOutsideEvent) => void` Callback when pointer down event outside content	—
onFocusOutside#	`(event: FocusOutsideEvent) => void` Callback when focus moves outside content	—
onInteractOutside#	`(event: PointerDownOutsideEvent \| FocusOutsideEvent) => void` Callback for any interaction outside content	—
asChild#	`boolean` Render as child element instead of div	—
*#	`React.ComponentPropsWithoutRef<'div'>` All standard HTML div attributes (id, role, data-*, etc.)	—

Close

Button that closes the popover

Prop	Type	Default
asChild#	`boolean` Render as child element instead of button	—
className#	`string` CSS class name	—
*#	`React.ComponentPropsWithoutRef<'button'>` All standard HTML button attributes (onClick, disabled, aria-*, etc.)	—

Arrow

Visual arrow pointing from content to anchor

Prop	Type	Default
width#	`number` Arrow width in pixels	—
height#	`number` Arrow height in pixels	—
className#	`string` CSS class name	—
*#	`React.ComponentPropsWithoutRef<'svg'>` All standard SVG attributes	—

Keyboard interactions

Key	Description
`Space / Enter`	Opens / closes the popover.
`Tab`	Moves focus to the next focusable element.
`Esc`	Closes the popover and returns focus to the trigger.

Source code

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