claude-code-source-recovery
Claude Code 2.1.88 Source Recovery
Skill by ara.so — Daily 2026 Skills collection.
What This Project Is
This repository contains the recovered TypeScript source code of @anthropic-ai/claude-code version 2.1.88. On 2026-03-31, Anthropic accidentally published a cli.js.map (57MB) source map to npm that contained the full sourcesContent of the bundled CLI. After extraction and reconstruction, the result is ~700,000 lines of TypeScript source code organized into a readable directory structure.
The project is useful for:
- Studying production CLI architecture patterns (Ink/React in terminal)
- Understanding how MCP (Model Context Protocol) is implemented in a real CLI
- Learning how Claude Code manages sessions, commands, authentication, and tool execution
Repository Structure
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