Calendar Heatmap

A year of daily values as week columns — the contributions grid, with five quantised intensity steps, streak stats, and month rails.

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Installation

pnpm dlx shadcn@latest add @spectrumui/calendar-heatmap

Requires @spectrumui in the registries of your components.json (shadcn adds official directory namespaces automatically).

Use with Coding Agent

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prompt.md

Use the "Calendar Heatmap" component (spectrumui/calendar-heatmap) from its shadcn registry.1. Install it with: npx shadcn@latest add @spectrumui/calendar-heatmap2. Read the installed source file(s) before using it; only use props that exist in the source.3. Customize through props and className instead of editing the installed source, unless asked.

Files & dependencies

app/registry/charts/chart-engine.tsx→ components/spectrumui/charts/chart-engine.tsx
app/registry/charts/calendar-heatmap.tsx→ components/spectrumui/charts/calendar-heatmap.tsx

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