flags

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Use when you need to check feature flag states, compare channels, or debug why a feature behaves differently across release channels.

facebook By facebook schedule Updated 1/24/2026

name: flags description: Use when you need to check feature flag states, compare channels, or debug why a feature behaves differently across release channels.

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

  1. Run yarn flags $ARGUMENTS
  2. Explain the output to the user
  3. 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
Install via CLI
npx skills add https://github.com/facebook/react --skill flags
Repository Details
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