ANTHROPIC ACCIDENTALLY LEAKED CLAUDE CODE'S SOURCE

Summary from the TLDR Marketing newsletter

Anthropic accidentally exposed around 512K lines of Claude Code's source code through a misconfigured source map in an npm release, revealing core systems, internal tools, and unreleased features. The code spread immediately across mirrors and decentralized platforms, making containment impossible despite takedown efforts. Developers created clean-room rewrites in other languages to avoid copyright claims, raising legal questions, especially if parts were AI-generated.