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Asynchronous JavaScript

When we write JavaScript or TypeScript, most of our code runs from top to bottom, line by line. This is what we usually think of as synchronous code. One line runs, then the next, then the next.But when we need to get information from a server, things are different. We cannot just freeze the whole application while we wait for that data to come back. If a website or app did that, most users would probably leave before anything loaded.So JavaScript needed a way to let certain tasks happen in the

Why You're Slow at Debugging Production Bugs

I Spent Years Debugging Production Bugs the Wrong WayIf you've ever spent 3 hours debugging a bug that turned out to be a simple console error — this post is for you.I've been there too many times.And after years of debugging production issues, I realized something:We're not bad developers. We're debugging with one eye closed.Let me explain. 👇 The Real ProblemA user reports a bug.The conversation usually goes like this:User: “The button doesn’t work.”You: “Can you send a screenshot?”U

How I Cut My AI Bill by Caching LLM Responses in Node.js

I built an LLM caching library to test what AI-assisted development actually looks likeI've been spending my evenings on a personal side project — just learning by building. The latest experiment was wiring up an AI agent into it.While testing, I caught myself sending almost the same prompts over and over. Same intent, slightly different wording. And every test run cost me real money.Then a thought hit me: if I'm doing this while testing, real users in production absolutely will too. The f

Your Next npm install Could Already Be Running Malware

Why installing packages the moment they drop is now a security incident waiting to happenHere is a scenario that is no longer hypothetical.A legitimate, widely trusted npm package publishes a new version. You run npm install — or your CI pipeline does automatically — and within seconds, before a single line of your application code executes, a postinstall script fires. It scans your filesystem for AWS credentials, GitHub tokens, npm publish tokens, and Kubernetes secrets. It ships them to

I built a tool to instantly share web projects without deploying

As a CS student, every time I wanted to show something I built, I had to either deploy it, screen share, or send files over WhatsApp.So I built RunZip.Drop a ZIP file, get a live URL and QR code instantly. No login, no setup, no account. Files auto delete after 24 hours.I built it with Node.js, Express, and Vanilla JS. Also made a desktop version with Electron.Live site: [https://runzip.onrender.com]GitHub: [https://github.com/rvkarthik579/runzip]Would love feedback from the community. Is this u

America's Greatest Strategic Blunder: The Imprisonment of Qian Xuesen

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I built a Vue-to-React migration tool that writes native React code for you

I’d like to share my open-source project VuReact — a compiler toolchain for migrating from Vue to React, while also enabling a “write React with Vue syntax” workflow. 🤔 Why I Built ItI love Vue’s &lt;script setup&gt;, Composition API, and its intuitive mental model.But many projects still require React.Until now, the options were usually:Rewrite everything manuallyRely on unreliable syntax converters or AI rewritesRun Vue and React side-by-side at runtime and deal with the resulting complex

Using Reflect for Safe Object Manipulation

Using Reflect for Safe Object Manipulation IntroductionIn the ever-evolving landscape of JavaScript, one of the crucial aspects of writing maintainable and robust code is the ability to manipulate objects safely and effectively. JavaScript's flexibility, while a boon for rapid prototyping, often leads to unintended consequences, such as inadvertent property overwrites, prototype pollution, and broken encapsulation. To address these concerns, ES6 introduced the Reflect API, providing a

Goodbye Visa and Mastercard: 130M Europeans switching to sovereign payment

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Meta blocks human rights accounts from reaching audiences in Arabia and the UAE

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What Does Vue 3 computed() Compile to in React with VuReact?

VuReact compiles Vue 3 code into standard, maintainable React code. In this article, the focus is on one of Vue's most important derived-state APIs: computed().If you write computed() in Vue, what does VuReact generate for React? Before We Dive InTo avoid noisy examples, this article follows two small conventions:All Vue and React snippets are intentionally simplified to show only the core logic.The discussion assumes you are already familiar with how Vue 3 computed works. Compilation

Exogenesis : Humanity’s Journey Beyond the Known

🚀 Introducing EXOGENESIS — Humanity’s Journey Beyond the KnownA cinematic sci-fi space exploration and colonization experience inspired by real astronomy, NASA mission systems, and the dream of humanity becoming an interstellar civilization.🌌 Explore the Milky Way🪐 Scan real celestial bodies📡 Analyze planets using scientific data🏗️ Establish colonies beyond Earth⚙️ Progress through futuristic propulsion technologiesBuilt using:React • Three.js • React Three Fiber • Supabase • PostgreSQL • Framer

Advanced Mocking Strategies: Mastering Test Doubles & Behavior Verification

Every experienced developer has been there: a test suite that passes on your machine but fails in CI, a green build that hides a broken integration, or a test that's so tightly coupled to implementation that it breaks every time you refactor. These aren't testing failures, they're mocking failures.Mocking exists to solve a fundamental tension in software testing: the need to test a unit of code in complete isolation while that code inevitably depends on the outside world, databases, APIs, queues

Building a live 3D globe of real time web traffic with Three.js and Server Sent Events

For the new Zenovay landing page I built a 3D globe that shows actual live visits from customer sites in close to real time. Dots glow and fade where visits happen.For the new Zenovay landing page I built a 3D globe that shows actual live visits from customer sites in close to real time. Dots glow and fade where visits happen.This post is a complete walkthrough of how it's built, in case you want to do something similar. What you see vs what it actually isWhat the visitor sees: a smooth spi

Saying Goodbye to Asm.js

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🔥 Mastering Real-Time State in E-commerce: Firebase Updates from Google I/O 2026

The Google I/O 2026 session on Firebase was exactly what frontend developers needed to hear. If there is one thing that keeps developers awake at night when building large-scale e-commerce applications, it is state synchronization. Managing a user's cart across multiple tabs, devices, and sessions while keeping inventory updated in real-time is notoriously complex.Tuning into the What's New in Firebase session, I was looking for solutions that reduce boilerplate code and improve real-time perfor

Mirabile - Land your dream job at top tech companies

Guys, be honest! Just imagined one day while you are brewing a hot matcha latte in the morning and all of a sudden,.. Ting! You heard the familiar sound of an email notification from your phone. You open and see a big title: "Congratulations! You have been offered a decision to work at Google."Being able to do that not only takes an insane amount of efforts, but also a detailed and clear roadmap as well. But have you ever noticed in today's digital world there are a huge amount of information,

🚀 Supercharging React E-commerce Apps with Gemini AI: A Frontend Perspective

The Google I/O 2026 Keynote left us with a lot to unpack, but as a frontend developer deeply invested in building React applications, the updates to the Gemini ecosystem completely stole the show. We are moving past the era of just "chatbots" into a phase where AI acts as the core logical engine of web applications.Currently, I am developing a comprehensive tech e-commerce platform. One of the biggest challenges in e-commerce is creating personalized, dynamic user experiences that mimic a real-l

College students drown out AI-praising commencement speeches with boos

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I Used AI for Code Review on a Production ERP for 6 Months. Here's Where It Actually Failed Me.

Six months ago I started running every non-trivial piece of code through AI before it shipped. Not prototypes — real ERP and CRM modules with paying clients on the other end. Batch processing tables, MRP allocation logic, dynamic invoice builders, real-time dashboards.Here's what I found out. What AI is actually good atDuplicate functions. In a codebase that's been touched by multiple devs over months, this is AI's most reliable win. It flagged things like: "This mirrors formatCurrency in u