danabra.mov
my blog https://overreacted.io
Add CLAUDE.md with development guidance for Claude Code
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
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# CLAUDE.md
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This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
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## Development Commands
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```bash
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# Start development server
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npm run dev
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# Build static site for production
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npm run build
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# Start production server (after build)
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npm start
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# Lint the codebase
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npm run lint
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# Apply patches after dependency changes
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npm run postinstall
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```
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## Architecture Overview
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**Static Blog with Next.js App Router**: This is Dan Abramov's personal blog built as a static site using Next.js 15 with the App Router and React 19. The site exports to static files (`output: "export"`).
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**Blog Post Structure**: Posts are stored as markdown files in `/public/[slug]/index.md` with frontmatter containing metadata (title, date, spoiler, youtube). Each post directory can contain:
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- `index.md` - The main post content
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- `components.js` - Post-specific React components and optional `Wrapper` component
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- Asset files (images, etc.)
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**Content Processing Pipeline**:
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1. `app/posts.js` reads all post directories from `/public/`
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2. Uses `gray-matter` to parse frontmatter from markdown files
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3. Posts are sorted by date (newest first)
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4. Individual posts are rendered via `app/[slug]/page.js` using `next-mdx-remote-client`
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**MDX Processing**: Posts support advanced MDX features:
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- JavaScript code blocks with `eval` meta execute and render inline (see `app/[slug]/mdx.js`)
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- Post-specific components can be imported from `components.js` files
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- Syntax highlighting via Shiki with "Overnight Slumber" theme
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- Auto-linking headings, GFM support, smart quotes
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**Routing**:
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- `/` - Home page listing all posts (`app/page.js`)
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- `/[slug]/` - Individual post pages (`app/[slug]/page.js`)
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- `/atom.xml` and `/rss.xml` - Generated feeds (`app/atom.xml/route.js`, `app/rss.xml/route.js`)
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**Styling**: Uses Tailwind CSS with custom CSS variables for theming (`--bg`, `--text`, `--title`, etc.). Post titles have dynamic color-coding based on post age using `colorjs.io`.
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**Static Generation**: All pages are pre-generated at build time. Post pages use `generateStaticParams()` to create routes for all post directories.
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## Key Files
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- `app/posts.js` - Core post discovery and feed generation logic
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- `app/[slug]/page.js` - Individual post rendering with MDX processing
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- `app/[slug]/mdx.js` - Custom remark plugin for executable code blocks
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- `next.config.js` - Static export configuration
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- `public/[slug]/index.md` - Post content files with frontmatter
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- `public/[slug]/components.js` - Optional post-specific React components