Writing polyfills for map(), filter(), and reduce() strengthens your JavaScript fundamentals

I decided to give it a shot and write my own polyfills — and honestly, it’s one of the best ways to strengthen your JS fundamentals 💪 🔥 Key takeaways: map() transforms, filter() selects, reduce() summarizes Writing them manually gives you a new respect for how they work Handling the initialValue in reduce() can be tricky 😅 If you’re learning JavaScript, try writing these from scratch — it’s a fun and eye-opening little challenge! 🚀 #javascript #Core-js #programming #ReactJs #nodeJs #interview

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