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claude-code-dev
How to develop, modify, and extend the Claude Code codebase following its established programming style, patterns, and conventions. Use this skill whenever working on the claude-code source — adding tools, commands, utils, components, types, hooks, services, or fixing bugs. Also use when the user asks about claude-code architecture, coding standards, file organization, or wants to understand how the codebase works. This skill ensures all contributions match the existing codebase style exactly.
// RATINGS
// README
Claude Code Development Style Guide (Skill)
This is a Claude Code skill that teaches Claude how to work with the Claude Code codebase following its established patterns and conventions.
Installation
To use this skill in your Claude Code sessions:
# From the repo root
claude skill add ./claude-code-skills
Or reference it directly in your CLAUDE.md:
/skill:claude-code-dev
What's Included
| Guide | Description |
|---|---|
| Project Overview | Tech stack, build system, dependencies |
| Directory Structure | File organization and where things go |
| Import Conventions | ESM imports, type imports, feature flags |
| Naming Conventions | Casing rules for files, variables, types |
| TypeScript Patterns | Branded types, unions, Zod schemas |
| Commenting Style | JSDoc, why-not-what philosophy |
| Error Handling | Custom errors, graceful degradation |
| Function Patterns | Factories, memoize, async generators |
| Tool Architecture | How to add new tools |
| Command Architecture | How to add new commands |
| State Management | Module state, AppState threading |
| Testing Conventions | Test patterns and helpers |
| Formatting Rules | Code style (no semicolons, single quotes) |
| Quick References | Step-by-step checklists |
Usage
Once installed, Claude will automatically use this skill when you work on the Claude Code source code. It ensures all contributions match the existing codebase style.
// HOW IT'S BUILT
KEY FILES