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.

Number Field API

View component

The full prop reference for the Number Field component. A numeric input with stepper buttons and Intl formatting.

Import

tsx

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

Props

Root

Container component that manages number field state and provides context to child components

Prop	Type	Default
asChild#	`boolean` Merge props with immediate child element instead of rendering a div	—
value#	`number \| undefined` Controlled numeric value	—
defaultValue#	`number \| undefined` Initial uncontrolled numeric value	—
onValueChange#	`(value: number \| undefined) => void` Callback fired when the numeric value changes	—
min#	`number \| undefined` Minimum allowed value; enforced on all value changes	—
max#	`number \| undefined` Maximum allowed value; enforced on all value changes	—
step#	`number` Amount to increment/decrement with arrow keys or triggers	1
disabled#	`boolean \| undefined` Disables input and trigger buttons	—
readOnly#	`boolean \| undefined` Prevents editing but allows display; triggers remain functional	—
formatOptions#	`Intl.NumberFormatOptions \| undefined` Options passed to Intl.NumberFormat for display formatting	—
locale#	`string \| undefined` Locale string passed to Intl.NumberFormat for number formatting	—
className#	`string` CSS class name applied to the root div element	—

Input

Text input element with role='spinbutton'; forwards all standard HTML input props plus onChange/onKeyDown/onWheel event handlers

Prop	Type	Default
className#	`string` CSS class name applied to the input element	—
onChange#	`(event: React.ChangeEvent<HTMLInputElement>) => void` Callback fired on input value change; composed with internal change handler	—
onKeyDown#	`(event: React.KeyboardEvent<HTMLInputElement>) => void` Callback fired on key down; composed with internal arrow/page/home/end key handlers	—
onWheel#	`(event: React.WheelEvent<HTMLInputElement>) => void` Callback fired on wheel scroll when focused; composed with internal increment/decrement handler	—

IncrementTrigger

Button to increase the numeric value by step amount; disabled when value >= max

Prop	Type	Default
className#	`string` CSS class name applied to the button element	—
onClick#	`(event: React.MouseEvent<HTMLButtonElement>) => void` Callback fired on button click; composed with internal increment handler	—

DecrementTrigger

Button to decrease the numeric value by step amount; disabled when value <= min

Prop	Type	Default
className#	`string` CSS class name applied to the button element	—
onClick#	`(event: React.MouseEvent<HTMLButtonElement>) => void` Callback fired on button click; composed with internal decrement handler	—

Source code

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