Claude Codeのソースコード流出、npmソースマップに51万行が丸見えだった件 — AI Heartland

This page reports on a source code leak of Anthropic's AI coding tool, Claude Code. A source map file was accidentally included in an npm package release, exposing 1,902 files and over 510,000 lines of TypeScript code publicly. The cause was a blacklist-based approach rather than recommended whitelist method. The leaked code reveals Claude Code's internal structure, including codename 'Tengu,' 107 unreleased feature flags, a 46,000-line query engine, and 29,000-line tool layer. Multiple GitHub archives were created within hours of discovery, making recovery impossible.