React Big Calendar + Next.js 16 + shadcn/ui Integration

Problem

react-big-calendar is a popular calendar library but requires careful integration with Next.js 16's App Router, especially regarding client/server component boundaries, CSS imports, and theming consistency with shadcn/ui.

Context / Trigger Conditions

• Building a calendar feature in Next.js 16 with App Router
• Using shadcn/ui for consistent design system
• Need server-side data fetching with client-side calendar interaction
• Want calendar events to match shadcn/ui color scheme

Solution

1. Install Dependencies

pnpm add react-big-calendar date-fns
pnpm add -D @types/react-big-calendar