JavaScript Articles

Day 1: Your Team’s Chat Is a Wiki Waiting to Happen — A New Kind of RAG

Why we built Beever Atlas — and why “distill first, retrieve second” works where vanilla RAG falls apart. Your team already documents everything — in chat. Beever Atlas distills those conversations into a wiki that the LLM can actually reason over. Across Slack, Discord, Microsoft Teams, and Mattermost (More platforms will be integrated). 5-Day Beever Atlas Series — start here. This is Day 1 of a five-part deep dive into Beever Atlas — the open-source, wiki-first RAG system that turns your team

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Building an AI Assistant Inside WordPress: Lessons Learned

Building an AI-powered assistant inside WordPress sounds straightforward at first. In practice, it raises a number of design, technical, and UX challenges that aren’t immediately obvious. Context Is Not Optional One of the earliest realisations was that generic AI responses are rarely useful. Without context, even accurate answers can feel disconnected from the user’s needs. the current admin screen post type or taxonomy visible interface elements The difference between contextual and non-

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Rollback Chains: When Payment Fails, What Actually Happens

Rollback Chains: When Payment Fails, What Actually Happens In the previous post, I showed the orchestrator's state transition table. It knows which topic to publish on failure. But what happens on the receiving end? What does "rollback" actually look like in code? This post walks through three real failure scenarios in my saga system. Each one triggers a different rollback chain, and each service handles compensation differently. Every service implements two operations: the forward action and

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I indexed 17,341 polynomial fan curves in Postgres and matched a duty point in <100ms

Most B2B HVAC catalogs publish fan performance curves as scanned PDFs. Engineers do the interpolation by eye when they need to know "will this fan deliver 5,000 m³/h at 350 Pa?" — they overlay the operating point on the curve image and squint. I wanted a catalog where the curves compute. Here's what that took. I parsed 17,341 fan curves from manufacturer PDFs into 3rd-degree polynomial coefficients, stored them as JSONB arrays in Postgres, and built a selection engine that ranks all 17,341 curve

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Under the Hood: React 19's New Reconciler and Vue 3.5's Vapor Mode

After 18 months of RFC debates and 12,000+ commits across both frameworks, React 19’s re-engineered reconciler and Vue 3.5’s Vapor Mode represent the most significant virtual DOM (VDOM) architectural shifts in a decade—delivering up to 40% faster initial renders and 60% lower memory overhead for complex enterprise apps, according to our benchmark suite. GTFOBins (38 points) Talkie: a 13B vintage language model from 1930 (288 points) Microsoft and OpenAI end their exclusive and revenue-shar

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Introducing KAlert.js — A lightweight animated alert dialog library for JavaScript

Introducing KAlert.js — A Lightweight Modern Alert Dialog Library for JavaScript 🚀 While working on my frontend projects, I often needed a clean and modern alternative to the default browser alert dialogs. The native browser alert: alert("Hello world"); is functional, but it looks outdated and isn't customizable. So I built KAlert.js — a lightweight, animated, Promise-based alert dialog library that works instantly via CDN with zero setup required. KAlert.js provides: ✅ Animated modal dialog

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Scraping 241 UK council planning portals – 2.6M decisions so far

I've been scraping 241 UK council planning portals – 2.6M decisions so far UK planning data is technically public. In practice it's locked behind 400+ different council portals, some still running bespoke ASP.NET that looks like it dates from 2004, some behind AWS WAF, all with subtly different schemas. I've spent four months scraping them. I'm now at 241 councils and 2.6 million decisions across England, Scotland and Wales. The scraping problem Most UK councils run one of a handful of portal sy

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Die versteckte Komplexität von HTML-Tabellen (Warum das Parsen schwieriger ist, als man denkt)

HTML-Tabellen sehen einfach aus. <table>, <tr>, <td>. Was soll da schiefgehen? Nachdem ich HTML Table Exporter gebaut habe – ein Tabellenexport-Tool, das Tausende von Real-World-Tabellen verarbeitet hat – kann ich sagen: eine ganze Menge. Dieser Beitrag behandelt die Edge Cases, die naive Parser zum Scheitern bringen, und wie man damit umgeht. Eine perfekte Tabelle sieht so aus: <table> <thead> <tr> <th>Name</th> <th>Umsatz</th> </tr> </thead> <tbody> <tr> <td

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The Developer's Dilemma: Explaining the True Ecommerce Website Cost in India (2026)

If you are a web developer or run a tech agency in India, you have definitely had this conversation. A client calls and asks, "I want a website just like Amazon. How much will it cost?" When you quote a realistic figure for a scalable architecture, they hit you with the ultimate comeback: "But my cousin’s friend said he can do it for ₹5,000." Estimating the ecommerce website cost in India has become an absolute nightmare. The market is highly fragmented, ranging from college students installing

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Build a playable 2D game in React — from zero to ~40 lines with CarverJS

Most game tutorials for web developers start with "install Unity" or "set up a canvas context." Both paths lead somewhere real — but if your game lives inside a React app, you want your game loop to compose with React state the same way everything else does. CarverJS is a React game engine built for that case. v0.0.1, APIs will move. But the core hooks are stable enough to build with today. Here is what a complete playable 2D game looks like from scratch. A player square that moves with WASD. Bo

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War Story: Debugging a React Native 0.73 Navigation Bug for Our iOS and Android Apps

At 2:14 AM on a Tuesday, our React Native 0.73 production app crashed for 12% of iOS users and 9% of Android users in the span of 11 minutes, triggered by a navigation stack edge case in @react-navigation/native 6.1.2 that took 72 hours of round-the-clock debugging to resolve. Talkie: a 13B vintage language model from 1930 (276 points) Microsoft and OpenAI end their exclusive and revenue-sharing deal (836 points) Pgrx: Build Postgres Extensions with Rust (44 points) Is my blue your blue?

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Why Your Landing Page Is Slow (And How to Fix It)

Originally published on adiss.dev Every second of delay costs you conversions. Google knows it, users feel it — and you're probably ignoring it. The most common causes of a slow landing page aren't complex. In 90% of cases, it comes down to three things: Unoptimized images that are too large JavaScript blocking rendering Fonts loading synchronously Each of these can add 2–4 seconds to your load time. If you're uploading a 4MB hero.png directly to your server, you've already lost the visitor befo

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