Entire Claude Code CLI source code leaks thanks to exposed map file
Summary
Ars Technica reports that Anthropic's Claude Code CLI source code was leaked due to an exposed source map in an npm release, exposing over 512,000 lines across about 2,000 TypeScript files. The leak, traced by security researchers and acknowledged by Anthropic as a packaging error, raises concerns about code security and competitive analysis while Anthropic confirms no customer data was exposed.