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.

skills.sh installs: 942
GitHub stars: 246.5K
last updated: Jul 14, 2026

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Install

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

Installs into .claude/skills of the current project.

Files

Feature Flags

Arguments:

$ARGUMENTS: Optional flags

Options

Option	Purpose
(none)	Show all flags across all channels
`--diff <ch1> <ch2>`	Compare flags between channels
`--cleanup`	Show flags grouped by cleanup status
`--csv`	Output in CSV format

Channels

www, www-modern - Meta internal
canary, next, experimental - OSS channels
rn, rn-fb, rn-next - React Native

Legend

✅ enabled, ❌ disabled, 🧪 __VARIANT__, 📊 profiling-only

Instructions

Run yarn flags $ARGUMENTS
Explain the output to the user
For --diff, highlight meaningful differences

Common Mistakes

Forgetting __VARIANT__ flags - These are tested both ways in www; check both variants
Comparing wrong channels - Use --diff to see exact differences

SKILL.md on GitHub

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