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react18-lifecycle-patterns

95 / 100 · Low risk

Fine to try.

By github/awesome-copilot (GitHub) · coding · 41,001 stars · scanned at commit 227949a

Provides exact before/after migration patterns for the three unsafe class component lifecycle methods - componentWillMount, componentWillReceiveProps, and componentWillUpdate - targeting React 18.3.1. Use this skill whenever a class component needs its lifecycle methods migrated, when deciding between getDerivedStateFromProps vs componentDidUpdate, when adding getSnapshotBeforeUpdate, or when fixing React 18 UNSAFE_ lifecycle warnings. Always use this skill before writing any lifecycle migratio…

Works with any agent that supports SKILL.md skills.

What this skill can do

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'react18-lifecycle-patterns' ] || [ -L ~/.agents/skills/'react18-lifecycle-patterns' ]; then echo 'A skill folder named react18-lifecycle-patterns already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/github/awesome-copilot' "$d" && git -C "$d" checkout --quiet '227949a7542a55d2155c00e7cdb998d9a0fee4f3' -- 'skills/react18-lifecycle-patterns' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/react18-lifecycle-patterns' ~/.agents/skills/'react18-lifecycle-patterns' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'react18-lifecycle-patterns' ~/.claude/skills/'react18-lifecycle-patterns' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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