Claude Code Source

Complete TypeScript source code of Anthropic's Claude Code CLI (v2.1.88), extracted from the cli.js.map source map file shipped in the npm package on March 31, 2026.

Stats

• 1,906 files
• 515,029 lines of TypeScript
• Version: 2.1.88
• Extracted from: @anthropic-ai/claude-code npm package → cli.js.map (59.8MB)

How This Was Extracted

npm pack @anthropic-ai/claude-code@2.1.88 --registry https://registry.npmjs.org
tar -xzf anthropic-ai-claude-code-2.1.88.tgz
# Parse cli.js.map → extract sourcesContent → write to files

The source map (cli.js.map) contains a sourcesContent array with the full, unobfuscated original TypeScript for every source file.

Disclaimer

All intellectual property belongs to Anthropic. This repository is for educational and research purposes only.