Forem: Robson Muniz

Stop building. Start validating.

Robson Muniz — Wed, 22 Apr 2026 18:18:18 +0000

Most devs:
👉 spend weeks coding
👉 launch to zero users

Reality: distribution > code

I fixed it with 2 things:
• plug-and-play auth
• fast validation before building

Links:
SecureAuthKit
ValidateFast
Build less. Earn soon

💸 Why most devs never make money (brutal truth)

Robson Muniz — Wed, 22 Apr 2026 15:32:43 +0000

I’m going to say something I had to learn the hard way.

Most devs don’t fail because they can’t code.

They fail because they build things nobody asked for.

I did this for years.

New idea → start coding → spend weeks polishing → launch…
Silence.

No users.
No revenue.
Just another “learning experience.”

At some point, that excuse stops working.

The uncomfortable truth:

We like building more than we like being wrong.

So instead of testing ideas early, we hide inside the code.
Feels productive. Feels safe.

But it’s not.

The market doesn’t care how clean your code is.
It cares if the problem is painful enough to pay for.

Everything changed for me when I flipped the order:

Find real pain first 🔎
Check if people are already paying 💰
Test interest before building 🧪

If nobody cares, I move on. Fast.

It’s less fun. But it works.

Curious how others here think about this:

Do you validate first, or build and figure it out later?

I loved working on it

Robson Muniz — Sat, 20 Dec 2025 10:35:29 +0000

Robson Muniz

Dec 20 '25

Building a Production-Ready E-Commerce Platform with React: A Complete Walkthrough

#react #javascript #webdev #tutorial

Comments

3 min read

Building a Production-Ready E-Commerce Platform with React: A Complete Walkthrough

Robson Muniz — Sat, 20 Dec 2025 10:34:57 +0000

🛍️ How I Built a Production-Ready E-Commerce Platform with React (And You Can Too!)

TL;DR: I built a complete e-commerce frontend called ShopStyle using React 18, Tailwind CSS, and modern patterns. It features real-time search, a persistent cart, dark mode, and 60fps animations. This article breaks down the architecture, challenges, and key decisions.

Live Demo • GitHub

🎯 The Challenge

"How hard could it be?" I asked myself before building an e-commerce platform from scratch. The answer: delightfully challenging.

My goals were to:

Create a realistic shopping experience with real product data
Implement modern React patterns (not just another Todo app)
Focus on performance (95+ Lighthouse score target)
Make it beautiful with smooth animations and responsive design
Keep the code maintainable with clean architecture

Here’s what I built and how I did it.

🚀 The Result: ShopStyle

🔗 Live Demo • 💻 Source Code

Key Features

✅ Real-time search with DummyJSON API
✅ Persistent shopping cart (localStorage + cross-tab sync)
✅ Dark / light mode with system preference detection
✅ 60fps animations using Framer Motion
✅ Fully responsive, mobile-first design
✅ Performance optimized (95+ Lighthouse score)

🏗️ Architecture Overview

graph TB
    A[App.jsx] --> B[ThemeContext]
    A --> C[ProductContext]
    A --> D[CartContext]

    C --> E[ProductList]
    E --> F[ProductCard]

    D --> G[CartSidebar]
    D --> F

    H[SearchBar] --> I((DummyJSON API))
    I --> C

    B --> A

Each context handles a single responsibility, keeping components focused, reusable, and easy to reason about.

⚙️ Tech Stack Decisions

Technology	Why I Chose It	Alternative
React 18	Stable ecosystem, concurrent features	Vue, Svelte
Vite	Lightning-fast DX	CRA
Tailwind CSS	Speed + consistency	Styled Components
Context API	Perfect for mid-size apps	Redux, Zustand
Framer Motion	Declarative animations	React Spring
DummyJSON	Realistic fake data	MSW

💡 Implementation Deep Dives

🔍 Real-Time Search with Debounce

import { useState, useEffect } from "react";

const SearchBar = ({ onSearch }) => {
  const [query, setQuery] = useState("");
  const [debouncedQuery, setDebouncedQuery] = useState("");

  useEffect(() => {
    const timer = setTimeout(() => setDebouncedQuery(query), 300);
    return () => clearTimeout(timer);
  }, [query]);

  useEffect(() => {
    if (!debouncedQuery.trim()) {
      onSearch(null);
      return;
    }

    const search = async () => {
      try {
        const res = await fetch(
          `https://dummyjson.com/products/search?q=${debouncedQuery}`
        );
        const data = await res.json();
        onSearch(data.products);
      } catch {
        onSearch([]);
      }
    };

    search();
  }, [debouncedQuery, onSearch]);

  return (
    <input
      value={query}
      onChange={(e) => setQuery(e.target.value)}
      placeholder="Search products..."
      className="w-full px-4 py-2 border rounded-lg"
    />
  );
};
export default SearchBar;

🛒 Persistent Cart with Cross-Tab Sync

import { useState, useEffect } from "react";

const [cart, setCart] = useState(() => {
  const stored = localStorage.getItem("shopstyle-cart");
  return stored ? JSON.parse(stored) : [];
});

useEffect(() => {
  localStorage.setItem("shopstyle-cart", JSON.stringify(cart));
}, [cart]);

useEffect(() => {
  const sync = (e) => {
    if (e.key === "shopstyle-cart") {
      setCart(JSON.parse(e.newValue || "[]"));
    }
  };
  window.addEventListener("storage", sync);
  return () => window.removeEventListener("storage", sync);
}, []);

🌗 Theme System (System-Aware)

import { useState, useEffect, useCallback } from "react";

const [theme, setTheme] = useState(() => {
  const saved = localStorage.getItem("shopstyle-theme");
  if (saved) return saved;
  return window.matchMedia("(prefers-color-scheme: dark)").matches
    ? "dark"
    : "light";
});

useEffect(() => {
  document.documentElement.className = theme;
  localStorage.setItem("shopstyle-theme", theme);
}, [theme]);

const toggleTheme = useCallback(() => {
  setTheme((prev) => (prev === "light" ? "dark" : "light"));
}, []);

⚡ Performance Optimizations

Memoized Product Cards

import { memo } from "react";

const ProductCard = memo(({ product }) => {
  return <div>{product.title}</div>;
});

export default ProductCard;

Virtualized Lists for Large Catalogs

import { FixedSizeList as List } from "react-window";

const VirtualProductList = ({ products }) => (
  <List height={600} itemCount={products.length} itemSize={350} width="100%">
    {({ index, style }) => (
      <div style={style}>
        <ProductCard product={products[index]} />
      </div>
    )}
  </List>
);

🧪 Lighthouse Scores

Metric	Score
Performance	96
Accessibility	100
Best Practices	100
SEO	92

🚀 Deployment

vercel --prod

Vercel handled builds, previews, routing, and performance out of the box.

🤔 Lessons Learned

Cart sync across tabs requires storage events
Animations should stick to transform and opacity
Always plan for API failure and caching

🔮 What’s Next

Backend (Node + PostgreSQL)
Stripe payments
PWA support
Internationalization

🛠️ Run It Locally

git clone https://github.com/yourusername/shopstyle.git
cd shopstyle
npm install
npm run dev

💬 Let’s Talk

What would you improve?
How do you manage state in large React apps?
Want a backend follow-up?

Drop a comment 👇

🙏 Thanks

Huge thanks to React, Tailwind, DummyJSON, and the DEV community ❤️

⭐ Star the repo
🔄 Share with friends
🐦 Follow for more content

Happy coding — the best project is the one you actually finish. 🚀

react #javascript #webdev #tutorial #ecommerce #frontend

[Boost]

Robson Muniz — Wed, 10 Sep 2025 09:52:56 +0000

Coinverter: A Simple Yet Powerful Currency Converter

Robson Muniz ・ Mar 10 '25

#react #javascript #development

I hope you guys like it!

Robson Muniz — Sat, 06 Sep 2025 14:13:10 +0000

Robson Muniz

Mar 10 '25

Coinverter: A Simple Yet Powerful Currency Converter

#react #javascript #development

Comments

2 min read

Coinverter: A Simple Yet Powerful Currency Converter

Robson Muniz — Mon, 10 Mar 2025 13:00:10 +0000

Coinverter: A Simple Yet Powerful Currency Converter

Have you ever needed a quick and easy way to convert currencies without dealing with bloated apps? Coinverter is a lightweight and intuitive web application built with React that lets you convert currencies in real time. In this post, I'll walk you through the features, technologies used, and how you can contribute to the project.

🚀 Features

💱 Real-time currency conversion using a reliable exchange rate API.
🔄 Seamless user experience with instant calculations.
🎨 Minimalist UI for quick and easy conversions.
🌍 Supports multiple currencies from around the world.
⚡ Fast and responsive, making it usable on any device.

🛠️ Technologies Used

React.js - Frontend framework for building the UI.
Styled Components - For modular and reusable CSS.
Exchange Rate API - Fetching real-time currency data.
React Hooks - Managing state and effects efficiently.
Axios - Handling API requests.

🎯 How It Works

Select the currency you want to convert from and to.
Enter the amount you wish to convert.
Get the converted value instantly!

The app fetches real-time exchange rates and updates the conversion immediately. No need for page reloads or waiting time.

🖥️ Installation & Usage

Want to run it locally? Follow these simple steps:

git clone https://github.com/robson-muniz/coinverter.git
cd coinverter
npm install
npm start

Then open [https://coinverter.pt/] in your browser.

💡 Why I Built This

As a frontend developer, I wanted to create a small yet useful application to practice working with APIs, state management, and UI design. Coinverter was born as a fun project, and I hope it helps others who need a quick currency conversion tool!

🤝 Contribute

If you’d like to improve the project or add new features, feel free to fork the repo and submit a pull request!

🔗 GitHub Repository: robson-muniz/coinverter

I’d love to hear your feedback! Let me know in the comments what you think about Coinverter or suggest improvements. 🚀

Image Slider | HTML & CSS 🎞️

Robson Muniz — Wed, 24 Apr 2024 14:29:51 +0000

✨ Stunning HTML & CSS Card Animation Tutorial on Hover 💻

Robson Muniz — Wed, 17 Apr 2024 13:56:17 +0000

🎨 Form Input Wave Animation | CSS & JavaScript🚀

Robson Muniz — Tue, 09 Apr 2024 16:52:21 +0000

Mastering Animated Navigation with JavaScript | Web Development Tutorial for Beginners

Robson Muniz — Wed, 27 Mar 2024 14:31:49 +0000

CSS Border Animation Tutorial | 2 Effects on Hover

Robson Muniz — Wed, 20 Mar 2024 14:04:39 +0000