One way ticket to TypeScript hell... and back

A developer newsletter covering several topics: Freerange, a new zero-API TypeScript tool by Cheng Lou that statically deduces numerical ranges to catch bugs like division-by-zero and NaN leaks at compile time; shadscan, a UI audit tool for React shadcn components; Angular switching to a yearly release cadence for API stability; a security report on five frontier LLMs hallucinating the same nonexistent package names enabling 'slopsquatting' on PyPI and npm; a North Korean campaign using fake coding interviews and SVG steganography to steal developer credentials; and Claude Opus 5's release.