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I Built 4 Interactive Engineering Tools You Can Run in Your Browser

Most engineering concepts live in textbooks and MATLAB scripts — you read about a Fourier transform, a PID loop, or a constellation diagram, but you r…

Why Meteor 3.5 Is the Most Important Release in Years

Every framework has a handful of releases that actually change its trajectory. For Meteor, 3.0 was one of them: it removed Fibers and rebuilt the fram…

JavaScript has no sorted containers. I built one for TypeScript.

JavaScript ships with Array , Set , and Map — but nothing that keeps its elements sorted as you insert. If you've ever built a leaderboard, an order b…

🚀 HTTP Just Got a New Method: Meet `QUERY` (And Why It Matters)

The HTTP protocol has remained surprisingly stable for years. But now, there's a new method that every backend developer should know about: QUERY . Wh…

How to Build a JavaScript Framework

"Framework" is one of those words that sounds heavier than it is. Say it out loud and a whole vocabulary comes tumbling after: components, state, rend…

A lesser used feature of template litrals in Js

TLDR: another way of calling a function This is about one of the more advanced ES6 features called Tagged Template Literals. -> Normal Template Lit…

Meet Fiza Rashid: A Software Engineering Student Passionate About Web Development

👋 Hello Dev.to! I'm Fiza Rashid – A Software Engineering Student & Aspiring Web Developer Hello, Dev.to community! 👋 My name is Fiza Rashid, and I…

I couldn't find an npm package to sort filenames into buckets, so I built one

Last week I was building a file-management feature. Users could upload documents, and I needed to sort them into sections. One bucket for NOCs, one fo…

My extension "worked" — it just quietly saved half of every conversation

My extension had a bug that's the worst kind: it looked like it worked. You'd save a Claude conversation, open it up, and there'd be your questions — …

The curious case of mathematical precision & legacy JS vs ES6.

Troubles faced with precision 0.3 - 0.2 !== 0.2 - 0.1 because computers understand Base-2 i.e. binary. To store a decimal number, it must be converted…

Stop Writing try/catch in Every Controller

When I first started building APIs with Express.js, every async controller looked the same. I would write a try block, perform some database operation…

Как выбрать язык программирования для ребёнка

Родители могут месяцами выбирать курс и язык программирования для ребёнка. Аргументы разные: Python самый популярный, а JavaScript нужен везде. А пото…

When `await mutation()` lies: the `{ error }` destructuring that saves your weekend

Episode 2/4 of the mini-series The week Supabase lied to me 4 times . Episode 1 — 3 Supabase security incidents, one shared root cause: SECURITY DEFIN…

Token Jaccard Similarity in TypeScript: Simple Text Comparison

Hey TypeScript devs! 👋 If you need a fast, lightweight way to measure how similar two pieces of text are (duplicate detection, content recommendations…

Add Arrow-Key Shortcuts to a Confirmation Dialog Without Breaking Accessibility

Two buttons in a confirmation dialog look simple: Cancel and Confirm. Keyboard behavior makes the component a small state machine. A recent MonkeyCode…

Query, Mutation, and Stream Are Not the Same Kind of Async Work

In the previous article, I discussed a common but dangerous oversimplification: Async work should not be reduced to Promise.resolve() followed by setS…

Why \\uXXXX Shows Up in JSON and How to Decode It Safely

Liquid syntax error: 'raw' tag was never closed

SilentShare — A Browser-Based Peer-to-Peer File Sharing App

Have you ever been in a computer lab, classroom, or office where you needed to quickly send a file between your phone and laptop? I run into this prob…

There are around 10 independent PDF engines, and I built a new one from scratch.

I'm a student who mostly built little apps for myself. About 14 months ago I needed to edit a random PDF and couldn't find a good web tool that actual…

JavaScript Atomics and SharedArrayBuffer in 2026: Practical Patterns for Cross-Worker State

JavaScript Atomics and SharedArrayBuffer in 2026: Practical Patterns for Cross-Worker State This article was written with the assistance of AI, under …

Type-safe Elasticsearch queries in TypeScript (and JavaScript) with elasticlink

Elasticsearch silent failures Here's a query that can compile and run, but return an empty result set: { "query" : { "match" : { "category" : "electro…

Adding a second middleware broke our typescript types

The Everyday Backend Engineer: Step 10 — The Observer Pattern

Welcome back to The Everyday Backend Engineer: Practical Design Patterns . In our last post, we made our core algorithms interchangeable using the Str…

How We Built DJ ROOTS: An AI-Powered Music Recommendation Platform

🎧 DJ ROOTS – Building a Real-Time Collaborative Music Platform with Gesture Control Crowd Vibes. You Control. Music is one of the best ways to bring p…

DevDash: 17 dev tools, one URL, all client-side

I put together a set of browser-based developer tools at usedevdash.dev . Here's the full list: JSON formatter/validator/minifier Base64 encoder/decod…

Multiplayer Games with Limn Engine and WebSockets

Multiplayer Games with Limn Engine and WebSockets Building Real-Time Multiplayer Games from Scratch 📖 Introduction Multiplayer gaming is one of the mo…

Надоело замазывать куски экранов? Расширение, которое блюрит личные данные на лету

Каждый раз, когда нужно скинуть скриншот интерфейса коллеге, клиенту или в чат, начинается один и тот же ритуал. Делаешь скрин, открываешь графический…

🚀 Day 7 of Learning React: How Do Components Share Data? Understanding Lifting State Up

📌 Missed Day 6? I explored how React renders components, why immutable updates matter, how HMR works behind the scenes, and different approaches to ha…

Just Let Me Write Digits

Build a 30-Line Provenance Log for AI-Generated Code

“Control the ideas, not the code” is trending today. For a small team, the practical question is how to preserve decisions when code becomes cheap to …