On March 31, 2026, Anthropic accidentally exposed Claude Code's full source code (~512,000 lines of TypeScript) via a source map file included in npm package version 2.1.88. The root cause was a known Bun runtime bug that served source maps in production mode. Key findings from the leaked code include 44 unreleased feature
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What the leaked code containedThe Undercover Mode debateHow the community respondedThe takedown race and the copyright questionWhat the leak means for securityNot the first leakWhat all this could mean for the AI coding industrySort: