Development

extract-errors @facebook

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

feature-flags @facebook

Use when feature flag tests fail, flags need updating, understanding @gate pragmas, debugging channel-specific test...

fix @facebook

Use when you have lint errors, formatting issues, or before committing code to ensure it passes CI.

flags @facebook

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

flow @facebook

Use when you need to run Flow type checking, or when seeing Flow type errors in React code.

test @facebook

Use when you need to run tests for React core. Supports source, www, stable, and experimental channels.

verify @facebook

Use when you want to validate changes before committing, or when you need to check all React contribution requirements.

create-pr @n8n-io

Creates GitHub pull requests with properly formatted titles that pass the check-pr-title CI validation. Use when...

cache-components @vercel

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electron-chromium-upgrade @electron

Guide for performing Chromium version upgrades in the Electron project. Use when working on the roller/chromium/main...

at-dispatch-v2 @pytorch

Convert PyTorch AT_DISPATCH macros to AT_DISPATCH_V2 format in ATen C++ code. Use when porting...

implementing-jsc-classes-cpp @oven-sh

Implements JavaScript classes in C++ using JavaScriptCore. Use when creating new JS classes with C++ bindings,...

implementing-jsc-classes-zig @oven-sh

Creates JavaScript classes using Bun's Zig bindings generator (.classes.ts). Use when implementing new JS APIs in...

writing-bundler-tests @oven-sh

Guides writing bundler tests using itBundled/expectBundled in test/bundler/. Use when creating or modifying bundler,...

writing-dev-server-tests @oven-sh

Guides writing HMR/Dev Server tests in test/bake/. Use when creating or modifying dev server, hot reloading, or...

zig-system-calls @oven-sh

Guides using bun.sys for system calls and file I/O in Zig. Use when implementing file operations instead of std.fs...

concept-workflow @leonardomso

End-to-end workflow for creating complete JavaScript concept documentation, orchestrating all skills from research...

fact-check @leonardomso

Verify technical accuracy of JavaScript concept pages by checking code examples, MDN/ECMAScript compliance, and...

seo-review @leonardomso

Perform a focused SEO audit on JavaScript concept pages to maximize search visibility, featured snippet...

test-writer @leonardomso

Generate comprehensive Vitest tests for code examples in JavaScript concept documentation pages, following project...

write-concept @leonardomso

Write or review JavaScript concept documentation pages for the 33 JavaScript Concepts project, following strict...

brand-guidelines @anthropics

Applies Anthropic's official brand colors and typography to any sort of artifact that may benefit from having...

webapp-testing @anthropics

Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend...

skill-creator @tldraw

Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an...