react-modernization SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
react-modernization from rudycity/superagent is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add rudycity/superagent/react-modernization@git:20260626.019dba9Pins git:20260626.019dba9 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- rudycity/superagent
- Path
.agents/skills/react-modernization/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260626.019dba9, committed Jun 26, 2026
- Size
- 6,815 bytes
- Repository stars
- 52
- License
- MIT
Upgrade React applications to latest versions, migrate from class components to hooks, and adopt concurrent features. Use when modernizing React codebases, migrating to React Hooks, or upgrading to latest React versions.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# React Modernization
Master React version upgrades, class to hooks migration, concurrent features adoption, and codemods for automated transformation.
## When to Use This Skill
- Upgrading React applications to latest versions
- Migrating class components to functional components with hooks
- Adopting concurrent React features (Suspense, transitions)
- Applying codemods for automated refactoring
- Modernizing state management patterns
- Updating to TypeScript
- Improving performance with React 18+ features
## Version Upgrade Path
### React 16 → 17 → 18
**Breaking Changes by Version:**
**React 17:**
- Event delegation changes
- No event pooling
- Effect cleanup timing
- JSX transform (no React import needed)
**React 18:**
- Automatic batching
- Concurrent rendering
- Strict Mode changes (double invocation)
- New root API
- Suspense on server
## Class to Hooks Migration
### State Management
```javascript
// Before: Class component
class Counter extends React.Component {
constructor(props) {
super(props);
this.state = {
count: 0,
name: "",
};
}
increment = () => {
this.setState({ count: this.state.count + 1 });
};
render() {
…Read the whole file at its exact version.
How to install
mdr add rudycity/superagent/react-modernization@sha256:7787e2435f537445The line at the top of this page pins the label git:20260626.019dba9, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_a7mz3e4aqphxb3kt)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jun 26, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (6815 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
rudycity/superagent · 52 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_a7mz3e4aqphxb3kt GET https://markdownregistry.com/api/v1/resolve?ref=rudycity/superagent/react-modernization GET https://markdownregistry.com/api/v1/blob/7787e2435f53744559f1c48a0769f17ffba48cb1e2ca4fe207cbb81b800055f1
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
More from rudycity/superagent
Every file in rudycity/superagent