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Write PDFs in React. Render them from Go. No Node, no browser, no sidecar.

How I ended up running real React 18 inside a single Go binary — and why it made a painful feature boring.Every backend eventually grows the feature nobody volunteers for: generate a PDF. An invoice, an offer letter, a statement. It sounds trivial until you ship it, and then you learn that server-side PDF generation is one of the more miserable corners of the job.I got tired of the misery and built waffle. You author documents in React; you render them to PDF from inside your Go process — no Nod

I Left Google DeepMind

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Let's Learn React

React.js is a free, open-source JavaScript library used for building interactive user interfaces (UIs), primarily for single-page applications. Maintained by Meta and a global developer community, it allows developers to create fast, scalable front-end web applications by managing how data is displayed on the screen.With React, we create websites using components , which are reusable pieces of UI.ExampleInstead of writing the same HTML multiple times,&lt;header&gt;My Website&lt;/header&gt;&lt;he

React's Reconciliation

<h2> Brief Definition:</h2><p><strong>Reconciliation is React's process of comparing the previous and new Virtual DOM trees to determine the minimum necessary changes to the real DOM</strong></p>

How I Built 100+ Financial Calculators Using React and TypeScripthttps://financecalc-one.vercel.app/

FinanceCalc - EMI, Loan, SIP, FD &amp; Tax Calculator Online FinanceCalc offers free online financial calculators. Estimate loan EMIs, mutual fund SIP returns, fixed deposit interest, GST, and income taxes instantly. financecalc-one.vercel.app

Full Stack Web Development

Full Stack Development: A Complete Guide to Building Modern Web ApplicationsIntroductionThe demand for Full Stack Development continues growing across every business sector. Companies need skilled developers who build complete web applications. A Full Stack Developer handles both front-end and back-end development tasks. This skill saves time, improves project quality, and increases career opportunities.Many students choose Full Stack Development because it offers excellent job prospects. Busine

Codex Micro

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Sidebar Conversation List Slow Initial Load: Hydration Issue Resolution

Ever been frustrated by a sluggish sidebar conversation list when it first pops up? Especially for a heavy user hopping into the app for the first time, that loading speed is their first impression, right? Today, I want to talk about how I tackled the initial loading performance of that very sidebar conversation list. Attempts and PitfallsAt first, I simply thought about reducing the number of conversations displayed in the sidebar. So, I changed the logic to show only the first 25 initiall

Show HN: misa77 - a codec that decodes 2x faster than LZ4 (at better ratios)

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Understanding the V8 Engine (The Brain Behind Node.js) — From First Principles

"I don't want to memorize what V8 does. I want to understand why it exists and how it actually works."If you've ever searched "How does Node.js work internally?", you've probably seen something like this:V8 parses JavaScriptV8 produces bytecodeV8 executes bytecodeV8 manages the call stackV8 manages heap memoryV8 performs garbage collectionCool...But what does any of that actually mean?This article explains V8 from first principles, without assuming any compiler knowledge. By the end, you'll unde

Turbopack in Next.js 16.3: A Game Changer for Development Speed

As a developer who's been working with Next.js for a while now, I'm excited to see the latest updates in version 16.3, particularly with Turbopack. This new release brings several features that aim to improve development speed and efficiency. In this article, I'll dive into what's new in Turbopack and how it can benefit developers like me. What's New in TurbopackThe latest update to Turbopack in Next.js 16.3 introduces several key features that can significantly impact development workflows

auto-animate now speaks marko

As of @formkit/[email protected], the library ships an official Marko adapter (PR #239). If you write Marko 6, you can now get animated list additions, removals, and reorders with one tag and no per-item work:npm install @formkit/auto-animateimport AutoAnimate from "@formkit/auto-animate/marko"&lt;let/items = [ { id: 1, text: "Mango" }, { id: 2, text: "Papaya" },]&gt;&lt;ul/listRef&gt; &lt;for|item| of=items by="id"&gt; &lt;li&gt;${item.text}&lt;/li&gt; &lt;/for&gt;&lt;/ul&gt;&lt;AutoAn

May the STL Be With You: C++ Data Structures Every Competitive Programmer Needs

The Quest Begins (The "Why")I still remember the first time I tried to solve a graph problem on Codeforces. My code was a tangled mess of vectors, manual heap tricks, and a lot of push_back/pop_back gymnastics. After three failed submissions I was staring at the screen, feeling like Frodo staring at Mount Doom—the destination was visible, but every step seemed to sap my strength. I knew there had to be a better way, a set of tools that would let me focus on the algorithm instead of wrestli

Part 2: Stop Fetching Data Inside useEffect (what modern React apps do instead)

Part 2 of the Modern React Patterns seriesIn the previous article (Part 1: Why I Rarely Use useEffect Anymore (and what I use instead)) we looked at one of the most common reasons developers overuse useEffect: deriving state that React can already calculate during rendering.This time I'd like to talk about another pattern that I see in almost every React codebase I've worked on: fetching data inside useEffect.Just like derived state, this isn't technically wrong. In fact, it was the standard rec

Cleanup Functions in useEffect: Stop Leaks Before They Start

IntroductionAlmost everyone uses useEffect in React for fetching data, timers, or adding event listeners. The part that causes the most silent bugs is the cleanup function. Skip it or write it incorrectly and you get memory leaks, duplicate handlers firing, or the infamous setState on unmounted component. This post shows, with concrete examples, how to write a correct cleanup every time. What useEffect does and what cleanup meansuseEffect is for side effects — work that isn’t directly

JS Days 2026: What's New This Year for JavaScript Developers

Sencha's JS Days is back for 2026 — free, virtual, and this year's program is heavier on the stuff developers are actually dealing with day-to-day.Dates: September 16–17, 2026** Format*: Fully virtual, join from anywhere* Cost*: Free* Register**: jsdays.ioWhat's New This YearThe 2026 program focuses on topics that weren't front and center in previous editions:AI-assisted development, done right A dedicated session on building AI agents with JavaScript, React, and ReExt. Practical patterns for in

Your `.sort()` is mutating state. JavaScript finally gave you the fix.

Here is a bug I have shipped before. Maybe you have too:const [tasks, setTasks] = useState(initialTasks);function sortByPriority() { const sorted = tasks.sort((a, b) =&gt; b.priority - a.priority); setTasks(sorted);}This looks correct. It doesn't work correctly. Array.prototype.sort mutates the array in place and returns the same reference. sorted and tasks point to the same array. React sees the same reference it had before and skips the re-render. The UI doesn't update, or it updates inconsi

BeUI v2: Framer Motion Components for React and Next.js

beUI: an animated component collection for React and Next.js.• 31 components and 16 larger UI blocks.• shadcn registry installation.• Tailwind CSS and Motion-based interactions.• Editable local React and TypeScript source.• Components for forms, overlays, tables, loaders, navigation, file uploads, scheduling, and more.👉 Blog Post👉 GitHub Repo👉 Live Demo

Node.js Architecture Explained from First Principles (The Mental Model Every Backend Developer Should Know)

Stop memorizing the Event Loop. Start understanding why Node.js works.When developers start learning Node.js, they're usually told things like:"Node.js is single-threaded.""Node.js is asynchronous.""Node.js uses an Event Loop."These statements are true... but they don't explain why.If someone asks you: "What actually happens when I call fs.readFile()?", could you explain it from memory—or from actual understanding?In this article, we'll rebuild Node.js from its fundamental building blocks so you

How to Become a Full Stack Developer from a B.Com Background | CodewareIT Dehradun

How to Become a Full Stack Developer from a B.Com Background: A Complete Roadmap by CodewareIT, DehradunIf you're a B.Com graduate sitting with your degree, wondering "kya main ab bhi coder ban sakta hoon?" — the answer is a confident yes. You are not late, you are not "wrong background," and you are absolutely not the only one. Every year, hundreds of commerce, arts, and even economics graduates walk into the tech industry and build real careers as full stack developers — some of them right her