Flags

If you've ever wondered why a React feature works differently between Canary and Experimental, or why your RN build behaves oddly compared to www-modern, this is your answer. It runs `yarn flags` to show you feature flag states across all React release channels, with a clean legend showing what's enabled, disabled, or set to special variants. The diff mode is especially handy for comparing two channels side by side. One thing to watch: flags marked as `__VARIANT__` get tested both ways in Meta's internal builds, so you need to check both states. It's straightforward tooling for a specific debugging scenario that comes up more often than you'd think if you work close to React internals.

Install to Claude Code

npx -y skills add facebook/react --skill flags --agent claude-code