import * as React from 'react' import { cn } from '@/lib/utils' import { Area, AreaChart, Bar, BarChart, Line, LineChart, ResponsiveContainer, } from 'recharts' export interface SparklineProps extends React.HTMLAttributes { data: number[] type?: 'line' | 'area' | 'bar' color?: string height?: number width?: number | string showEndDot?: boolean strokeWidth?: number trend?: 'up' | 'down' | 'neutral' animated?: boolean /** Accessible name. A sparkline conveys a trend, which is invisible to AT * without one; defaults to a summary of the series. */ ariaLabel?: string } const Sparkline = React.forwardRef( ( { data, type = 'line', color, height = 32, width = '100%', showEndDot = false, strokeWidth = 2, trend, animated = true, ariaLabel, className, ...props }, ref ) => { // `aria-label` on a plain

is ignored by most AT — it needs a role. // Default the name to something useful rather than leaving the trend // entirely invisible. const accessibleLabel = ariaLabel ?? (data && data.length ? `Sparkline, ${data.length} points, from ${data[0]} to ${data[data.length - 1]}` : 'Sparkline, no data') // Unique ID per instance prevents gradient collision when multiple sparklines render on the same page const uid = React.useId().replace(/:/g, '') // Determine color based on trend or explicit color. // Must run before the empty-data early return — hooks cannot be called // conditionally, otherwise an empty→populated data transition crashes with // "Rendered more hooks than during the previous render". const resolvedColor = React.useMemo(() => { if (color) return color if (trend === 'up') return 'hsl(var(--success))' if (trend === 'down') return 'hsl(var(--destructive))' return 'hsl(var(--primary))' }, [color, trend]) if (!data || data.length === 0) { return (

) } // Convert data array to format recharts expects const chartData = data.map((value, index) => ({ value, index })) const strokeColor = 'hsl(var(--foreground))' const lastIndex = data.length - 1 /** * Custom dot renderer that only draws a circle on the final data point. * Used directly on the primary series — no duplicate series needed. */ // eslint-disable-next-line @typescript-eslint/no-explicit-any const endDotRenderer = (dotProps: any) => { const { cx, cy, index } = dotProps if (!showEndDot || index !== lastIndex) return null return ( ) } if (type === 'bar') { return (

) } if (type === 'area') { return (

) } // Default: line return (

) } ) Sparkline.displayName = 'Sparkline' export { Sparkline }