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.

Chart

stable

A comprehensive custom SVG chart library with 45+ components — bar, line, area, pie/donut, scatter, bubble, radar, heatmap, treemap, funnel, gauge, candlestick, radial bar, radial line, sankey, waterfall, gantt, boxplot, sunburst, chord, histogram, and more. No external charting dependency.

Basic usage

Examples

Bar + Line combined

Combine Chart.Bar and Chart.Line inside Chart.Root. Each series picks from the CSS variable palette automatically.

Revenue

Profit

Bar chart

A vertical bar chart with grid lines, labelled axes and an interactive tooltip. The chart is responsive — omit the width prop to let it fill its container.

Revenue

Multi-series (Bar + Line)

Combine Chart.Bar and Chart.Line inside the same Chart.Root to overlay series with different mark types. The stacked bars use the same stackId.

Revenue

Cost

Profit

Area (stacked)

Chart.Area with a shared stackId renders a stacked area chart. fillOpacity controls the fill transparency independently per series.

Revenue

Cost

Pie / Donut

Wrap Chart.Pie in Chart.PieRoot. Set innerRadius > 0 to make a donut chart. padAngle and cornerRadius add spacing and rounded corners between segments.

Direct

Organic

Referral

Social

Line (multi-series)

Multiple Chart.Line components inside one Chart.Root. Each series picks the next color from the palette automatically, or accepts an explicit color prop.

Alice

Bob

Carol

Scatter plot

Chart.Scatter maps xKey to the horizontal axis and yKey to the vertical axis. Multiple series are supported inside one Chart.Root.

Products

Radar / Spider

Chart.RadarRoot with PolarGrid, PolarAngleAxis and one or more Radar series. Each row in data represents one axis spoke.

Alice

Bob

Heatmap

Chart.Heatmap renders a grid of colored cells. Provide xKey, yKey and valueKey to map your data. Width and height are explicit.

Treemap

Chart.Treemap uses the squarify algorithm. Top-level items may contain a children array for nested groups. Omit children for a flat treemap.

Funnel

Chart.Funnel renders a top-down funnel. Each stage needs a name and value. Stages are rendered in the order provided.

Gauge

Chart.Gauge renders a half-circle arc gauge. Use the label prop to annotate the center. Combine multiple gauges side by side for a dashboard widget.

Candlestick (OHLC)

Chart.Candlestick expects data with open, high, low and close fields. Use upColor / downColor to customise bullish and bearish candle fills.

SparkLine

Chart.SparkLine is a standalone mini-chart designed to fit inside table cells, cards or KPI widgets. Use type="line" (default) or type="bar". Width and height are explicit.

Line

Bar

RangeBar

Chart.RangeBar renders floating bars that span from lowKey to highKey. Use it for temperature ranges, confidence intervals or availability windows.

Temp range (°C)

ReferenceLine

Chart.ReferenceLine draws a horizontal (y) or vertical (x) rule across the plot area. Use it to mark thresholds, averages or target values.

Revenue

ReferenceArea

Chart.ReferenceArea shades a rectangular region of the chart bounded by y1/y2 (or x1/x2). Combine with ReferenceLine to highlight acceptable ranges.

Revenue

Radial bar

Wrap Chart.RadialBar in Chart.RadialBarRoot. Each row in data becomes a concentric arc ring. Provide dataKey for arc length and nameKey for labels.

Waterfall

Chart.Waterfall renders a bridge / waterfall chart where each bar starts from the running total of the previous bars. Negative values are styled differently.

Sankey

Chart.Sankey visualises flow between nodes using proportional-width links. Provide a nodes array (id + optional color) and a links array (source, target, value).

Pyramid

Chart.Pyramid is an inverted funnel — the widest segment is at the bottom. Use it for hierarchical data or population pyramids where the largest value is the base.

Gantt

Chart.Gantt renders a horizontal timeline where each task bar spans from start to end on a numeric time axis. Add a group field to visually cluster related tasks.

Histogram

Chart.Histogram bins a flat array of numbers into equal-width buckets and renders them as a bar chart. Use bins to control the number of buckets.

Boxplot

Chart.Boxplot renders standard box-and-whisker plots. Each entry needs min, q1, median, q3 and max. Add an outliers array for individual outlier dots.

Chord diagram

Chart.Chord visualises relationships between groups using a square matrix. Each cell [i][j] is the flow strength from group i to group j.

Sunburst

Chart.Sunburst renders a multi-level donut chart. Pass a nested data tree — each node can have a value (leaf) or children (branch). Click a segment to zoom in.

Linear gauge

Chart.LinearGauge is a horizontal progress-bar style gauge. Use colorStops to apply a traffic-light palette — each stop is [percentage, color].

Radial line

Chart.RadialLineRoot + Chart.RadialLine plots data on a circular axis — useful for cyclic data like months or weekdays. Use closePath and area for a spider-web fill.

Range area

Chart.RangeArea fills the band between a low and high series. Use it for confidence intervals, temperature ranges, or min/max envelopes.

Temperature (°C)

Gauge composition

Compose a gauge from GaugeContainer + GaugeReferenceArc + GaugeValueArc + GaugePointer for full control over colors, thickness and pointer style.

Semi-circle pie

Restrict the arc sweep with startAngle and endAngle to produce a semi-circle pie. Any angular range is supported — not just a full 360°.

Pie arc labels

Set arcLabel="percentage" to render the percentage of total directly on each arc segment. Use arcLabelMinAngle to suppress labels on tiny slices.

Pie center label

Combine a donut (innerRadius > 0) with Chart.PieCenterLabel to render arbitrary content — text, icons or KPI values — in the hollow center.

Direct

Organic

Referral

Social

Bar with labels

Enable showLabel on Chart.Bar to print the value on every bar. Use labelPosition="outside" to place the label above the bar, inside to place it within.

Revenue

Area fill by value

Set fillByValue on Chart.Area to automatically use the chart-1 color above zero and the chart-3 color below zero — useful for P&L or delta charts.

Funnel variants

Chart.Funnel supports a variant prop (filled / outlined) and a curve prop (linear / bump / step). Combine them for different visual styles.

Outlined

Bump curve

Features

20+ chart types with 45+ composable components.
Every chart type has multiple variants (stacked, horizontal, arc labels, fill-by-value, etc.).
Fully responsive cartesian charts via ResizeObserver.
CSS variable color system (--chart-1 through --chart-5).
Colorblind-safe accessibilityMode with SVG pattern fills.
Compound Chart.* API — composable and tree-shakeable.
No Recharts, Chart.js or D3 dependency — pure SVG.

Installation

bash

pnpm dlx structyl add chart

API Reference

Chart.Root

Cartesian chart container. Compose Bar, Line, Area, Scatter and Bubble inside.

Prop	Type	Default
data	`Record<string, unknown>[]` Array of data objects.	—
height	`number` SVG height in pixels.	300
width	`number` SVG width. Omit for responsive layout.	—
margin	`{ top, right, bottom, left }` Inner margin for axes.	{ top:10, right:10, bottom:30, left:40 }
accessibilityLabel	`string` Sets aria-label on the SVG.	—
accessibilityMode	`boolean` Enables pattern fills for colorblind accessibility.	false

Chart.Bar

Vertical (or horizontal) bar series inside Chart.Root.

Prop	Type	Default
dataKey	`string` Required. Field name in data.	—
name	`string` Display name in legend and tooltip.	—
color	`string` Override color.	—
stackId	`string` Bars with the same stackId are stacked.	—
radius	`number` Corner radius.	2
orientation	`'vertical' \| 'horizontal'` Bar direction.	'vertical'

Chart.Line

Line series inside Chart.Root.

Prop	Type	Default
dataKey	`string` Required. Field name in data.	—
name	`string` Display name.	—
color	`string` Override color.	—
curve	`'linear' \| 'catmullRom' \| 'step'` Line interpolation.	'linear'
dot	`boolean` Show data point dots.	true
strokeWidth	`number` Line stroke width.	2

Chart.Area

Filled area series inside Chart.Root. Accepts all Chart.Line props plus fillOpacity and stackId.

Prop	Type	Default
dataKey	`string` Required. Field name in data.	—
fillOpacity	`number` Fill transparency (0–1).	0.2
stackId	`string` Areas with the same stackId are stacked.	—

Chart.Pie / Chart.PieRoot

Pie or donut chart. Wrap Chart.Pie in Chart.PieRoot.

Prop	Type	Default
dataKey	`string` Required. Numeric value field.	—
nameKey	`string` Label field for segments.	—
innerRadius	`number` Inner radius (> 0 = donut).	0
padAngle	`number` Gap between segments in radians.	—
cornerRadius	`number` Rounded segment corners.	—
colors	`string[]` Per-segment color overrides.	—

Chart.Radar / Chart.RadarRoot

Radar/spider chart. Wrap Chart.Radar(s) in Chart.RadarRoot.

Prop	Type	Default
dataKey	`string` Required. Numeric value field to plot.	—
name	`string` Display name.	—
color	`string` Override color.	—
fillOpacity	`number` Fill transparency.	0.25

Chart.Heatmap

Standalone heatmap grid. xKey, yKey and valueKey map data fields to cells.

Prop	Type	Default
data	`Record<string, unknown>[]` Required.	—
xKey	`string` Required. Horizontal axis field.	—
yKey	`string` Required. Vertical axis field.	—
valueKey	`string` Required. Numeric intensity field.	—
width	`number` SVG width.	500
height	`number` SVG height.	280

Chart.Treemap

Standalone treemap using the squarify algorithm. Supports nested children.

Prop	Type	Default
data	`TreemapNode[]` Required. Hierarchical data with name, value and optional children.	—
width	`number` SVG width.	500
height	`number` SVG height.	350

Chart.Funnel

Standalone funnel chart rendered top-down.

Prop	Type	Default
data	`{ name: string; value: number }[]` Required. Stages in descending order.	—
width	`number` SVG width.	400
height	`number` SVG height.	300

Chart.Gauge

Standalone half-circle arc gauge.

Prop	Type	Default
value	`number` Required. Current value.	—
min	`number` Minimum value.	0
max	`number` Maximum value.	100
width	`number` SVG width.	240
height	`number` SVG height.	180
label	`string` Text shown in center of arc.	—

Chart.Candlestick

Standalone OHLC candlestick chart.

Prop	Type	Default
data	`OhlcEntry[]` Required. Objects with open, high, low, close.	—
width	`number` SVG width.	600
height	`number` SVG height.	300
bullColor	`string` Color for bullish (close > open) candles.	hsl(var(--chart-2))
bearColor	`string` Color for bearish (close < open) candles.	hsl(var(--chart-5))

Edit on GitHub

PreviousSvgIcon Next Chip