Debugging as Clues to Code Issues

🚀 LeetCode Challenge Update: 27/128 Just wrapped up “Container With Most Water” 💧 — a classic two-pointer problem that really tests how you think about optimization. At first glance, it feels like a brute-force problem… but the real magic is in reducing time complexity from O(n²) to O(n) using a smarter approach. 🔑 Key takeaway: Sometimes the best solution isn’t about checking everything — it’s about moving intelligently and eliminating unnecessary work. 📈 Progress: 27/128 Consistency > Motivation #LeetCode #128DaysOfCode #CodingJourney #DSA #JavaScript #ProblemSolving

TypeScript's type system is the one I've enjoyed working with since day one. Not because it's the safest or the most strict. It's neither, actually. `any` breaks every guarantee, the compiler trusts your type assertions blindly, some rules it just doesn't enforce. But it lets me do something I haven't seen elsewhere: take a type, iterate over its keys, remap values, filter by condition, drop fields — all at the type level, before a single line runs. Less annotation, more like a query language for shapes. Most type systems tell you what things are. TypeScript also lets you express how one type becomes another. And it was built on top of JavaScript — a language where any value can be anything at runtime. The type system had to be flexible enough to describe that mess. Turns out, that's what made it powerful. The type system built for the messiest language ended up being the most interesting one to work with. What’s your favorite type-level trick in your language? #TypeScript #Programming #SoftwareEngineering #DeveloperExperience #JavaScript

🔄 JavaScript Async Evolution Callbacks → Promises → Async/Await Here's what changed and why it matters: Callbacks — the OG way. Works, but nests into chaos fast. "Callback Hell" is real. Promises — cleaner chaining with .then() and .catch(). Big improvement, still a bit verbose. Async/Await — reads like normal code. try/catch for errors. Clean, simple, everyone loves it. ✅ Remember: Async/Await is just Promises under the hood. Learn both. Still working in a Callbacks codebase? Drop a comment 👇 #JavaScript #WebDev #AsyncJS #Programming #100DaysOfCode

TypeScript told you everything was fine. It lied. 8pm. Your phone buzzes. Slack from the CTO. "Something is broken in prod." You open the logs. undefined is not a function. But... the types were correct. You checked. TypeScript didn't complain. Then you see it. Someone used as SomeType three PRs ago to shut up the compiler. The API returned something different. TypeScript never saw it. It always is. TypeScript makes JavaScript safer. It doesn't make it safe. The gap is real. And it always shows up at the worst possible time. Rust makes a different promise. If it compiles, the type contract holds. Everywhere. Always. No casting your way out. No any as escape hatch. No "it should be fine" at 2am. That's a different guarantee entirely. Follow me. #rust #typescript #javascript #programming

Most developers know var is bad… Yet it’s still showing up in codebases in 2026 😬 Here’s why it keeps breaking things 👇 🔴 var is function-scoped, hoisted, and re-declarable → Leads to silent, hard-to-trace bugs 🟢 const is block-scoped and strict → Fails fast, catches mistakes early, keeps your code predictable 💡 The rule is simple: → const by default — always → let when reassignment is needed → var — never again ⚡ Quick 5-second fix: Add "no-var": "error" to your ESLint config and enforce it across your team 👀 Still seeing var in your codebase? Drop a 😅 — you’re definitely not alone ♻️ Repost this to save your team hours of debugging 👉 Follow Mohd Sharfuddin Khan for daily JavaScript tips that actually level up your coding #JavaScript #WebDevelopment #Frontend #CodingTips #CleanCode #Developers #ESLint #JSDaily #WebDevelopment #FrontendDeveloper #100DaysOfCode #CodeTips #LearnToCode #ProgrammingTips #TechCommunity #DevLife

Stop writing TypeScript interfaces by hand. 🛑 Paste your JSON → pick your output style → get clean, production-ready TypeScript in seconds. Modular or single-block. Interface or type syntax. Zero server, 100% private. ⚡ Built this tool for developers who have better things to do than manually type out API response shapes. Try it free 👉 https://lnkd.in/dn76zm9R Read the full breakdown at hamidrazadev.com 🔗 #TypeScript #WebDev #DevTools #JavaScript #FrontendDev #ReactJS #NextJS #OpenSource #Programming #100DaysOfCode

We're back with another update on react-infinite-scroll-component(https://lnkd.in/gZgRuSkG)! 🥁 When I took over as maintainer, I laid out a 4-phase roadmap to bring this library back to life. Today, we're crossing off Phase 2 with the release of v7.0.0. 🎉 Here's where we stand: ✅ Phase 1 — Comprehensive test suites & CI/CD automation (v6.1.1) ✅ Phase 2 — React 17 migration (v7.0.0) 🔜 Phase 3 — TypeScript conversion & modern React features 🔜 Phase 4 — Accessibility improvements & enhanced documentation What shipped in v7: - React 17 peer dependency support - Jest + React Testing Library test coverage - Storybook upgraded from v5 to v7 - Revamped CI/CD with automated publish workflows - ESLint, Prettier, and Husky configured for contributor-friendly DX - Node.js 18+ baseline 109k+ dependents. Still going. Still breaking nothing. Huge thanks to Ankeet Maini for the trust, and to everyone who's filed issues, opened PRs, or just starred the repo, your patience means a lot. I'll be actively going through open issues and PRs now, so if you've been waiting, your turn is coming. 🙌🏻 #OpenSource #React #JavaScript #TypeScript #WebDevelopment #Community #Maintainership

I spent 2 hours debugging my React code today. The problem? I forgot to add a key prop inside .map() 2 hours. Gone. We always check the big things first — API calls, state management, component logic... But the bug is always something embarrassing Here are 3 mistakes I make almost every week — ❌ Forgetting key prop in .map() ❌ Calling setState and expecting instant update ❌ Spending 1 hour on a bug that console.log solves in 2 minutes 3 years of experience and I still do this Tell me your most embarrassing bug in the comments 👇 I promise I won't judge. We have ALL been there. #reactjs #javascript #frontenddeveloper #webdevelopment #coding #100daysofcode #programminghumor

JavaScript is single threaded, but handles async operations so smoothly 👇 That’s where the Event Loop comes in. At first, things seem simple: • Code runs line by line But then you see behavior like this: Even with 0ms, the timeout doesn’t run immediately. Because JavaScript uses: ✔ Call Stack ✔ Web APIs ✔ Callback Queue ✔ Event Loop Understanding this changed how I think about async code and debugging. Sometimes the delay isn’t about time, it’s about how the event loop schedules execution. #JavaScript #EventLoop #AsyncJavaScript #FrontendDevelopment #Programming

TypeScript 6.0 is out and doubling down on being JavaScript with syntax for types. The release adds built-in Temporal types, better generic inference, and prepares for Go compiler rewrite. Read more: https://lnkd.in/eY6PU-WW #devnews #typescript