# extract-errors

> Claude/Codex skill by [@facebook](https://omgskills.com/library/facebook/index.md) · 250k stars · Updated 2026-09-11

Use when adding new error messages to React, or seeing "unknown error code" warnings.

Tags: declarative, frontend, javascript, library, react, ui

## Install

```sh
git clone https://github.com/react/react /tmp/react && ln -s /tmp/react/.claude/skills/extract-errors ~/.claude/skills/extract-errors
```

## From README

Extract Error Codes Instructions Run yarn extract-errors Report if any new errors need codes assigned Check if error codes are up to date

## Links

- HTML page: https://omgskills.com/skills/facebook/react/extract-errors/
- GitHub: https://github.com/facebook/react
- Author: [@facebook](https://omgskills.com/library/facebook/index.md)

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