Handles the annoying bits of making code work across Windows, macOS, and Linux. Covers path construction with path.join(), platform detection, line endings, environment variables, and file permissions. The reference guides break down everything from shell command execution to testing strategies across platforms. Honestly, if you've ever hardcoded a backslash in a file path or wondered why your CI passes on Linux but fails on Windows, this will save you time. It's comprehensive without being overwhelming, and the do/don't lists are practical. Worth having around before you ship anything meant to run on multiple operating systems.
npx skills add https://github.com/aj-geddes/useful-ai-prompts --skill cross-platform-compatibility