Learn TypeScript with this comprehensive handbook

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

6 days ago I made a post on: 📌 "Something i figured in JavaScript today that A.I code misinterprets." I would be sharing on that today ! you wouldn't want to miss this.

Chai aur TypeScript – Day 11 🚀 Today I learned about Arrays, Tuples, and Enums in TypeScript. 🔑 Key Learnings: • Arrays → define types for elements • readonly → prevent modification • Tuples → fixed types with strict order • Can also be made readonly • Enums → define a fixed set of values • Useful for controlled options 💡 Big Insight: Using strict data structures makes code more predictable and safe #ChaiAurTypescript #TypeScript #JavaScript #LearningInPublic #DeveloperJourney #ChaiCode Hitesh Choudhary Chai Aur Code

🚀 Class 7: Master JavaScript Arrow Function Syntax! 🚀 Dive deep into arrow functions with this comprehensive guide covering all syntax variations - from basic arrows to implicit returns. Perfect for React developers! Includes hands-on demos and practical examples. 🔥 What you'll learn: Arrow function basics & syntax variations Parameters, braces, and implicit returns Real-world usage in JavaScript/React YouTube video link: https://lnkd.in/dcyUxbzi

JavaScript is single-threaded. The browser is not. That's the whole trick — and once you get it, async finally clicks. Most devs learn JS syntax first. But nobody explains the runtime. Here's what's actually happening when your code runs in the browser:

𝗧𝗲𝗺𝗽𝗹𝗮𝗧𝗲 𝗟𝗶𝗧𝗲𝗿𝗮𝗹𝘀 𝗜𝗻 𝗝𝗮𝗙𝗮𝘀𝗰𝗿𝗶𝗽𝘁 When you start building strings in JavaScript, you often use the + operator. This works, but it gets messy and hard to read as your code grows. You have variables like name and age. You want to build a message with these variables. The old way is to use the + operator: let name = "Alice" let age =

Built a basic Student Mark Analyzer using JavaScript. Focused on loops, arrays, and functions. Made mistakes, fixed logic, and understood how to actually think through problems. GitHub link : https://lnkd.in/gJtM332c

🚀 Continuing my exploration of what’s new in JavaScript (ECMAScript 2025) - here’s another feature that caught my attention : 👉 Promise.try() One thing that always felt awkward was handling errors when a function could fail both synchronously and asynchronously. 👉 This usually meant writing separate error handling logic - one for immediate failures and another for promise rejections. (See example below 👇) 💡 What I like about this update: • Cleaner and more predictable error handling • No need to worry about sync vs async differences • Everything flows through a single .catch() Feels like a small addition, but it simplifies a pattern that shows up quite often in real-world code.

Spent an hour debugging something that shouldn’t have been a problem 😅. I was building a file upload module in NestJS with Cloudinary, and kept getting: Namespace 'global.Express' has no exported member 'Multer' The weird part? '@types/multer' was installed, everything compiled fine… but tests kept failing. Turns out the issue was in my tsconfig.json: "types": ["jest"] I didn’t realize this at first, but "types" is a whitelist, not an addition. So by specifying only Jest, I accidentally excluded other global types — including Multer. Fix was simple: "types": ["jest", "node", "multer"] Just wanted to share this in case it saves someone else from going down the same rabbit hole. Lesson learned: if you're using "types" in TypeScript, you need to explicitly include everything your project depends on. TypeScript will humble you real quick 😂

👩💻 We built this in bootcamp with a professor walking us through it. I then decided to rebuild and upgrade it alone. The original was vanilla JavaScript + the OMDB API. It worked, but it was guided every step of the way. ⚙️ This time I upgraded it to React & TypeScript figuring out on the way what to change and why. ✨ Additional features that I added: – Favourites saved directly on the same page via localStorage – TypeScript to keep the data handling clean and intentional Turns out the best challenge after finishing a bootcamp is going back and doing it again, without a safety net. 🔗 Link: https://lnkd.in/eSXMHEKv #developerjourney #react #typescript #javascript