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.

File Upload API

View component

The full prop reference for the File Upload component. A drag-and-drop file input with validation.

Import

tsx

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

Props

Root

The main provider component that manages file state and validation; accepts all standard div HTML attributes

Prop	Type	Default
asChild#	`boolean` Replace the root div with a child element (use Slot pattern)	—
value#	`File[]` Controlled list of currently selected files	—
defaultValue#	`File[]` Initial uncontrolled file list	[]
onValueChange#	`(files: File[]) => void` Callback when the file list changes (add/remove)	—
accept#	`string` Comma-separated MIME types or file extensions to accept (e.g. 'image/*' or '.pdf,.doc')	—
multiple#	`boolean` Allow selecting multiple files; if false, only one file at a time	false
maxSize#	`number` Maximum file size in bytes; files exceeding this trigger a 'size' error	—
maxFiles#	`number` Maximum number of files allowed; files exceeding this trigger a 'count' error	—
disabled#	`boolean` Disable file selection in Dropzone, Trigger, and Input	—
onError#	`(errors: Array<{file: File; reason: 'size' \| 'type' \| 'count'}>) => void` Callback for validation errors (size exceeded, type not accepted, max count exceeded)	—
className#	`string` CSS class names for custom styling	—

Dropzone

Drag-and-drop zone; accepts all standard div HTML attributes; features drag state data-state='dragging'|'idle' and data-disabled attribute

Prop	Type	Default
className#	`string` CSS class names for custom styling (styled version includes sensible defaults)	—
children#	`React.ReactNode` Custom content; styled version defaults to Upload icon + descriptive text if omitted	—
onClick#	`(event: React.MouseEvent<HTMLDivElement>) => void` Triggered on click; automatically opens file picker	—
onDragOver#	`(event: React.DragEvent<HTMLDivElement>) => void` Triggered during drag; composable with internal drag state	—
onDragLeave#	`(event: React.DragEvent<HTMLDivElement>) => void` Triggered when drag leaves; composable with internal drag state	—
onDrop#	`(event: React.DragEvent<HTMLDivElement>) => void` Triggered on drop; composable with file addition	—

Input

Hidden file input element (type='file'); automatically receives accept and multiple from Root context; forwards standard input HTML attributes

Prop	Type	Default
onChange#	`(event: React.ChangeEvent<HTMLInputElement>) => void` Triggered on file selection; composable with internal file addition logic	—

Trigger

Button to trigger file selection; automatically opens the hidden input on click; forwards standard button HTML attributes

Prop	Type	Default
onClick#	`(event: React.MouseEvent<HTMLButtonElement>) => void` Triggered on click; composable with file picker opening	—

Clear

Button to clear all selected files; automatically disabled when Root.disabled is true or no files exist; forwards standard button HTML attributes

Prop	Type	Default
onClick#	`(event: React.MouseEvent<HTMLButtonElement>) => void` Triggered on click; composable with internal clear logic	—

List

Container for file items (ul element); accepts all standard ul/list HTML attributes

Prop	Type	Default
className#	`string` CSS class names for custom styling (styled version defaults to 'mt-2 space-y-1')	—

Item

Individual file item (li element); displays file name and size in styled version; forwards standard li HTML attributes

Prop	Type	Default
file#	`File` Required - the File object to display; used as key and for data-file-name attribute	—
children#	`React.ReactNode` Custom content; styled version defaults to file name + size display if omitted	—
className#	`string` CSS class names for custom styling	—

Source code

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