# Facebook

> React platform engineering

Engineering skills for React, Relay, testing, and feature flags.

## Profile stats

- Skills: 18
- Stars: 1.8M
- Best skill: extract-errors

## Links

- HTML page: https://omgskills.com/library/facebook/
- GitHub: https://github.com/facebook
- X: https://x.com/MetaOpenSource

## Featured skills

- [extract-errors](https://omgskills.com/skills/facebook/react/extract-errors/index.md) — Used when adding new error messages to React, or seeing "unknown error code" warnings.
   - [@facebook](https://omgskills.com/library/facebook/index.md) · 250k stars
- [feature-flags](https://omgskills.com/skills/facebook/react/feature-flags/index.md) — Used when feature flag tests fail, flags need updating, understanding @gate pragmas, debugging channel-specific test...
   - [@facebook](https://omgskills.com/library/facebook/index.md) · 248k stars
- [flags](https://omgskills.com/skills/facebook/react/flags/index.md) — Used when you need to check feature flag states, compare channels, or debug why a feature behaves differently across...
   - [@facebook](https://omgskills.com/library/facebook/index.md) · 248k stars
- [flow](https://omgskills.com/skills/facebook/react/flow/index.md) — Used when you need to run Flow type checking, or when seeing Flow type errors in React code.
   - [@facebook](https://omgskills.com/library/facebook/index.md) · 248k stars
- [test](https://omgskills.com/skills/facebook/react/test/index.md) — Used when you need to run tests for React core.
   - [@facebook](https://omgskills.com/library/facebook/index.md) · 248k stars
- [verify](https://omgskills.com/skills/facebook/react/verify/index.md) — Used when you want to validate changes before committing, or when you need to check all React contribution requirements.
   - [@facebook](https://omgskills.com/library/facebook/index.md) · 248k stars
- [fix](https://omgskills.com/skills/facebook/react/dot-claude/skills/fix/index.md) — Used when you have lint errors, formatting issues, or before committing code to ensure it passes CI.
   - [@facebook](https://omgskills.com/library/facebook/index.md) · 247k stars
- [relay-best-practices](https://omgskills.com/skills/facebook/relay/relay-best-practices/index.md) — Best practices for writing idiomatic Relay code.
   - [@facebook](https://omgskills.com/library/facebook/index.md) · 19k stars
- [buck2-rule-basics](https://omgskills.com/skills/facebook/buck2/buck2-rule-basics/index.md) — Guide users through writing their first Buck2 rule to learn fundamental concepts including rules, actions, targets,...
   - [@facebook](https://omgskills.com/library/facebook/index.md) · 4.4k stars

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