Flavien (56kode)

🚀 Debug web apps directly from #Cursor #IDE with Browser-Tools #MCP! ⚡

🔹 Console logs analysis
🔹 Network requests inspection
🔹 AI-powered debugging

👉 www.56kode.com/posts/connec...
#CursorIDE #AI #debug #chrome

I need to test this.

Yeah, thanks. I actually wanted to see the AI work on its own, but I should have added the documentation to the context.

Back from vacation ✈️ and straight into action!
I let AI handle a full dependency migration on my Astro blog: React 19, Astro 5 Content Layer, Tailwind… all automated ⚡
Curious how it went?

👉 www.56kode.com/posts/automa...
#Astro #AI #cursor #cursorAI

Lost in your codebase? 🤯 Cursor's screenshot search feature is a game-changer! Just paste a UI screenshot and it finds the corresponding file for you. Saves so much time! #Cursor

AI agent stuck? 😫 Pro tip: Just open a new chat and restart! Often fixes the bug and gets things running smoothly again. #AI

Tech watch #15 A curated selection of articles for React frontend developers, focusing on architecture, performance, and best practices

🚀 Tech Watch #15 is live!
👉 Compound Components in #React
👉 useSyncExternalStore demystified
👉 #AI & the future of dev jobs
👉 #TypeScript in the AI era
👉 Migrating from #ESLint to #BiomeJS
🔗 open.substack.com/pub/56kode/p...

Integrating Jira into Cursor with the Model Context Protocol | 56kode - Web Development Blog on React & TypeScript Step-by-step guide to connect Jira to Cursor through the Model Context Protocol and streamline your workflow

Skip the IDE-to-browser shuffle!
🔄 Make Cursor talk to Jira with MCP
🎯 Get tickets, check specs, even auto-build test plans without leaving your editor.
👉 www.56kode.com/posts/integr... #Jira #CursorAI

SolidJS for React Developers SolidJS has been around for a few years now. As a React developer, I wanted to give it a try. While it resembles React in many ways, it also introduces some key differences.

marmelab.com/blog/2025/05...

Level Up React: Mastering Context API | 56kode - Web Development Blog on React & TypeScript Explore the internal mechanisms of React's Context API, its optimizations in React 19, and how to use it effectively for global state management. Comparison with Zustand and Redux, advanced optimizati...

🚀 New article: Level Up #React - Mastering Context API
🔍 Learn how React's Context API really works under the hood, what’s new in React 19, and when to use it vs Zustand or Redux.
📉 Avoid unnecessary re-renders with proven optimization tips.
📖 Read → www.56kode.com/posts/level-...

Mutation testing helps you find the truth:
Your tests either catch real issues — or they don't.
It’s not something to run on every push.
But from time to time? It’s eye-opening 👀

So when should you use it?
🧹 When cleaning up a legacy project
🧠 When improving test quality
🚨 When you think your code is well tested — but want proof

But be warned ⚠️
Mutation testing is slow.
🔁 It can multiply test time by 10x or more
🧱 It may require config tweaks to work with your test setup
🐢 In CI, it can make feedback loops way longer

That’s the magic of mutation testing:
✅ It doesn’t just check if your code is covered
✅ It checks if your tests are actually useful
And that’s a huge difference.

Let’s say you wrote this:

return a > b;

Mutation testing might change it to:

return a < b;

If your tests still pass... do they really check the logic? 🤔

💥 Mutation testing works like this:
- The tool (like Stryker) changes your code on purpose
- It runs your test suite
- If tests fail → good!
- If tests pass → bad sign: the mutation slipped through

🧪 What if your tests... were being tested too?

A high code coverage doesn’t mean your app is bug-free.
It just means your code was executed by tests — not that it was really verified.
Let me show you something better: mutation testing 👇
#testing #jest #vitest #js #ts

AI tools like ChatGPT or Claude write way better code with #TypeScript 🤖🧠

Your types give the AI context 👇
Well-typed code = better suggestions, safer refactors, fewer bugs.
TypeScript isn’t a nice-to-have. It’s your AI co-pilot’s map 🗺️

#ts #ai #cursor #windsurf

🚀 Tech Watch #14 is live!
👉 Open-Closed Principle in React
👉 Pattern Matching in TanStack Query
👉 Faster Lazy Loading in React Router
👉 useEffect: Child vs Parent
👉 Cursor Rules for AI Dev in TS
👉 The Hidden Cost of AI Coding
🔗 open.substack.com/pub/56kode/p...

There's nothing better than full remote work.

Want better answers from #AI?
🤔 First, ask what info it’s missing to help you better.
✍️ Then, ask it to rewrite your prompt for clarity.
You don’t need to be perfect — just collaborate smart 🤖✨ #chatpgt #claudeai #claude #gemini #deepseek

Tech watch #13 A curated selection of articles for React frontend developers, focusing on architecture, performance, and best practices

🚀 Tech Watch #13 is live!
👉 Master useReducer
👉 React.memo demystified
👉 React Reconciliation
👉 Tailwind's apply feature
👉 Toast in Server Components
🔗 56kode.substack.com/p/tech-watch...

Level Up React: Mastering useReducer for structured state management | 56kode - Web Development Blog on React & TypeScript Complete guide to React's useReducer hook - from basic concepts to advanced implementation. Learn how to structure complex state logic, manage interdependent state, and create maintainable React appli...

📢 Stop managing complex state with multiple useState hooks! Learn how to master useReducer for structured state management in React 🧩
🔹 Centralize business logic
🔹 Create explicit actions
🔹 Improve testability
👉 www.56kode.com/posts/level-...
#React

Your React.memo component keeps re-rendering?

Check the children.

JSX passed inline is recreated every render → breaks memo.

✅ Solution: memoize children with useMemo,
or don’t memoize at all if it’s not worth it.

Code ⬇️

Tech watch #12 A curated selection of articles for React frontend developers, focusing on architecture, performance, and best practices

🚀 Tech Watch #12 is live! Must-read for frontend devs:
👉 Real-world uses of TypeScript utility types
👉 Next.js auth with Server Components
👉 Vite vs Turbopack speed test
👉 React View Transitions API
👉 And more...
🔗 Read here: 56kode.substack.com/p/tech-watch...

Why I stopped using AI code editors: https://lucianonooijen.com/blog/why-i-stopped-using-ai-code-editors/

Advanced number typing in TypeScript Introduction TypeScript significantly enhances number typing beyond the basic number type....

🔢 Want to improve your TypeScript skills? Learn how to refine number typing with literal types, branded types, and more! 🛠️🚀

👉 dev.to/56_kode/adva...

#TypeScript #TS

Tech watch #11 A curated selection of articles for React frontend developers, focusing on architecture, performance, and best practices

🚀 Tech Watch #11 is out! Essential reads for frontend devs:
👉 Storing state in the URL in React
👉 Beyond React.memo for better performance
👉 LLMs for web devs
👉 Web Components guide
👉 SSR deep dive for React
👉And more...
open.substack.com/pub/56kode/p...

Level Up React: Mastering useEffect for performant React applications | 56kode - Web Development Blog on React & TypeScript Learn how to master React's useEffect hook with practical examples. Discover internal mechanisms, avoid common pitfalls, and build performant applications with proper synchronization techniques.

New Level Up #React article!
🔄 Stop fighting with useEffect! Master this powerful hook to build truly performant apps.
🧩 Learn execution cycles, avoid infinite loops, and discover when NOT to use effects with practical examples.
👉 www.56kode.com/posts/level-... #reactjs #hooks

Tech watch #10 A curated selection of articles for React frontend developers, focusing on architecture, performance, and best practices

🔍 Tech Watch #10 is out!

Curated frontend insights:
👉 Why unknown > any in #TypeScript
👉 TanStack Form v1 release
👉 Signals in #React: pros & cons
👉 #Cursor AI productivity tips
👉 React Wrapper Pattern
👉 Zod for API validation
👉 TypeScript Map Pattern

Read more: open.substack.com/pub/56kode/p...