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React Hooks: Mastering useState and useEffect – The Matrix of State

The Quest Begins (The "Why")Honestly, I remember the first time I tried to make a component react to user input and fetch data at the same time. I had a button that toggled a flag, an input that needed to stay in sync, and a useEffect that was supposed to pull fresh data whenever that flag changed. The result? A chaotic mess of stale values, infinite loops, and that sinking feeling when the console lit up with warnings like a Christmas tree gone rogue. I felt like Neo staring at the code r

Building AI Prompt Lab with Java 21, Spring Boot and React 19

AI Prompt Lab is a full-stack application I built around a simple idea: managing reusable AI prompts should feel like working with any other structured application asset, rather than keeping them scattered across notes, text files or chat histories.The project combines Java 21, Spring Boot, React 19, TypeScript, PostgreSQL and OpenRouter in a compact architecture that covers the main concerns of a modern web application: authentication, authorization, persistence, external API integration and ma

@react-pdf/renderer in 2026: The StyleSheet Isn't CSS

Why does a React layout that works in the browser render differently once it is a PDF? Because @react-pdf/renderer's StyleSheet looks like CSS without being CSS. flexDirection does not default to row the way a browser does, CSS Grid is not supported at all, and the properties that resemble CSS are a subset of it.The component model fits a React team's workflow. IronPDF for Node.js renders real CSS, Grid included, through a browser engine, which is where the two part ways.Full disclosure. We buil

Remix 3 leaves React: what a web-standards full stack means for route performance

Someone pastes an InfoQ headline into the agency Slack channel. Someone else asks whether the Remix 2 client should “upgrade this quarter.” Product wants one risk line for the quarterly review, but nobody has opened the migration guide yet. Remix 3 is not a patch. InfoQ’s beta preview and the team’s earlier Wake Up, Remix post describe a rebuild that leaves React behind for ordinary web APIs and a forked Preact runtime. Existing Remix 2 apps continue on React Router v7. Remix 3 is a separate sta

Anthropic's 'Watermark' Text Adulteration in Claude Is a Perversion of Writing

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Nvidia dramatically reduces amount of OpenAI infra financing it may guarantee

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Balan Coffee & Roastery — A Slow-Drip Vietnamese Coffee Landing Page

This is a submission for Frontend Challenge - Comfort Food Edition, Perfect Landing What I BuiltI created Balan Coffee &amp; Roastery, a polished landing page for a fictional Vietnamese comfort café in Saigon.The concept is inspired by the quiet comfort of slow phin coffee, butter toast, and small sweet treats. Rather than treating coffee as a quick purchase, I wanted the site to feel like a calm daily ritual: slow, warm, familiar, and personal.Visitors can explore the menu, learn the café

The Case Against Formal Verification, 50 Years Later

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Playwright in 2026: The PDF Method That's Chromium-Only

Asking Playwright for a PDF looks like this, and the import gives it away.import { chromium } from "playwright";const browser = await chromium.launch();const page = await browser.newPage();await page.setContent("&lt;h1&gt;Invoice #1042&lt;/h1&gt;&lt;p&gt;Total due: $250.00&lt;/p&gt;");await page.pdf({ path: "invoice.pdf", format: "A4" });await browser.close();Note the chromium import. page.pdf() runs only in headless Chromium and throws on Firefox and WebKit, which do not implement PDF export at

Stripe Clinches over $7B Deal to Buy AI Firm OpenRouter

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I Built a Free Home Brewing Recipe & Batch Calculator (Because Brewer's Friend Charges $6.95/Month)

I Built a Free Home Brewing Recipe &amp; Batch Calculator (Because Brewer's Friend Charges $6.95/Month)Stop paying $6.95/month for recipe calculations when you can do it right in your browser.I was tired of brewing calculators that gate basic batch math behind subscriptions. Every time I wanted to scale a recipe or calculate IBUs, I had to log in, enter my details, and hope the site didn't sell my data. For a tool that should take 30 seconds, that's ridiculous.So I built something better.H

Feijoada Anonymous: a support group for people who miss Brazilian food

This is a submission for Frontend Challenge - Comfort Food Edition, Perfect Landing What I BuiltBrazil's soft power isn't samba or football. It's our food. We create things from scratch. We change other cuisines, making them a completely new thing. The only cardinal rule for Brazilian recipes is that they must be made with love. Brazilian food is comfort food.That's what I have been learning for the past few years. Cooking is like coding: you don't need to follow strict rules to make it goo

Architecting Infinite Canvas Performance: Viewport Virtualization & Spatial Indexing with TypeScript

Building a high-performance, browser-based infinite canvas that effortlessly hosts thousands of generative media nodes, real-time streaming pipelines, and WebGPU-accelerated transformations is one of the ultimate engineering challenges in modern web development. When users rapidly pan and zoom across a boundless workspace containing deeply nested computational graphs, a naive rendering engine will quickly grind to a halt. The reason comes down to an immutable physical constraint: the limits of i

Why a two-user Convex chat app read tens of MB a day

I was staring at my Convex dashboard, confused. Convex is the reactive backend I use for a chat app: it stores the data and, the part that matters here, it keeps your queries live, so the UI updates the instant the data changes. The dashboard has a meter called "Database Bandwidth," and for two users, me on a dev account and me on a prod account, poking the app for maybe half an hour, it was reading tens of megabytes a day.That made no sense to me. It's a chat app. The actual messages were a few

DS Express Errors (centralizing errors library) — v1.9.2 Release Notes August 16, 2026

v1.9.2 – August 16, 2026This release improves production error responses, strengthens JWT error handling, and fixes the TypeScript type for needMappers.Fixed excessive production response sanitization in Zod, Joi, express-validator, Mongoose, Prisma, and Sequelize mappersAdded separate JWT mapper handling to prevent sensitive JWT error details from being exposed in productionFixed the TypeScript type for needMappersUpdated README.md documentationExpanded tests for production-safe mapper re

Comfort Food Companion 🍲

A warm, interactive comfort-food experience created for the DEV Frontend Challenge — Comfort Food Edition: Perfect Landing.🔗 Live Demo: https://dev-challenge-comfort-food-companio.vercel.app/💻 GitHub: https://github.com/NandhuTee/dev-challenge-comfort-food-companionWhat I BuiltFor this challenge, I wanted to create more than a traditional food landing page.I built Comfort Food Companion, an interactive experience where users can explore familiar comfort foods while learning about their approxima

I Built a Free Meal Planning & Grocery List Generator (Because Plan to Eat Charges $36/Year)

I Built a Free Meal Planning &amp; Grocery List Generator (Because Plan to Eat Charges $36/Year)Stop paying $36/year for Plan to Eat when you just need to plan meals and generate a grocery list.I was tired of Plan to Eat's subscription model — $36/year for a tool that basically just formats meals into a list. For a family, a busy parent, or anyone who plans meals occasionally, that's overkill.So I built something better.Meal Planning &amp; Grocery List Generator for Families runs 100% in y

I Built a Free Independent Contractor Agreement Generator (Because LegalZoom Charges $100+)

I Built a Free Independent Contractor Agreement Generator (Because LegalZoom Charges $100+)Stop uploading sensitive business information to the cloud just to generate an independent contractor agreement.I was tired of LegalZoom's pricing — $100+ one-time fee plus extra for revisions. And every time I filled out their form, my company data went to their servers. For a tool that should take 5 minutes.So I built something better.Independent Contractor Agreement Generator runs 100% in your bro

Models Are Getting Dumber on Purpose

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Monsoon Rasam Window - CSS Art for DEV Frontend Challenge

A pure HTML and CSS comfort-food scene inspired by rasam rice on a rainy evening. What I BuiltThis is my submission for the DEV Frontend Challenge: Comfort Food Edition,CSS Art prompt.I built Monsoon Rasam Window, a pure HTML and CSS illustration of a warmbowl of rasam rice on a rainy evening. The scene has the pieces that make thatmeal feel like home to me: pepper steam, curry leaves, tomato rasam, ricegrains, papad, pickle, a brass lamp, a banana leaf, and rain sliding down thewindo