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Building Yarncom: Phase 1 - The Authentication Handshake & The Port 5000 Ghost
Every developer remembers their first "real" project. For me, Yarncom is one of my first real projects. Instead of following a guided tutorial, Iâm documenting a Progressive Journey of building a blogging API from scratch.The Stack:Engine: Node.js / ExpressDatabase: MongoDB AtlasSecurity: Bcryptjs & JWTThe Security Guard (Bcrypt & JWT)I don't want to just save data; I want to secure it. I implemented a pre-save hook logic where passwords are scrambled using Bcrypt before they ever hit th
Top Free Online Tools Every Freelancer and Small Business Should Use in 2026
In todayâs fast-moving digital world, freelancers and small business owners rely heavily on online tools to manage their daily work efficiently. From creating invoices to performing quick calculations and automating small tasks, the right set of free web-based tools can save both time and money.The good news is that in 2026, many powerful tools are available completely free, directly inside the browser, without any installation or subscription. This article highlights some of the most useful typ
Mamdani Hires Lisa Gelobter as Chief Tech Officer
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I Built a Mobile IDE With AI Agents - Here's How It Works Under the Hood
I've been building Drape, a mobile IDE for iOS that lets you code, preview, and ship apps entirely from your phone. The AI doesn't just suggest code - it's an autonomous agent that reads your project, writes files, runs commands, and iterates.In this post I want to share how it works under the hood, the architectural decisions I made, and the challenges of building a real IDE on mobile. What Drape DoesBefore diving into the tech, here's what the user experience looks like:You create a new p
Your AI Can Read Your .env File - Unless You Stop It Like This
Letâs be honest: giving an AI Agent access to our file system is incredibly convenient. It can write code, fix bugs, and analyze logs in an instant.However, with great power comes great responsibility. If the AI decides (or is tricked via prompt injection) to read your .env file, your API keys, database passwords, and production secrets are potentially compromised. This remains a critical risk even if you use premium plans - which generally preserve data privacy compared to free tiers that use d
I Refuse to Learn Flutter â And I Think That's a Mistake
I'll be straightforward: I'm a React Native developer, and everything around me runs on React Native. My job, my university, the local market â it's all React and JavaScript. Flutter barely comes up in conversation.But I'm not blind. I see Flutter's GitHub activity growing consistently. More stars, more contributors, more packages being published every month. I see companies like Nubank â right here in Brazil â shipping production apps with it. I see the community expanding and the framework evo
Show HN: Renovate â The Kubernetes-Native Way
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If an AI can do 100% of your job, you are doing the wrong job
Look my friend, everyone is panicking. I see it on Twitter, I see it in the cafes. People think AI is going to come and take the keyboard away from us. But listen to me. Iâve been coding since I was 10. I remember when we had to fix bugs for IE6ânow that was a nightmare, like trying to dance Bachata on a floor covered in broken glass.Actually, AI is not the end. It is just a new teammate. But if you play like a substitute player who just sits on the bench and does the bare minimum, yeah, you mig
Top Benefits of Using TypeScript for Your Projects
TypeScript is a popular programming language that builds on JavaScript by adding static type definitions. Hereâs why developers choose TypeScript:Enhanced Code Quality and ReadabilityTypes help you understand code intentionsExample: Defining a functionâs return type instantly documents its outputEarly Detection of ErrorsTypeScript catches many errors at compile timeExample:function add(a: number, b: number): number { return a + b;}// add(1, '2') // Error: Argument of type 'string' is not assign
Fix: mobile 100vh jumps (URL bar + keyboard) using VisualViewport
Mobile browsers love making 100vh feel⊠optimistic.You build a full-height layout, it looks fine â then the URL bar collapses, the on-screen keyboard opens, and suddenly:footers jumpmodals get croppedâfull screenâ sections arenât full-screen anymoreHereâs a small, production-friendly approach: use the Visual Viewport (what the user can actually see) and expose it to CSS. Why 100vh breaks on mobileOn desktop, 100vh usually matches the visible area. On mobile, the visible area changes frequen
Building an AI Architecture Generator with Ollama and draw.io MCP
Visualizing system architecture is a critical part of software engineering, yet the tooling often feels manual and slow. In this post, I'll walk through how I built SketchStack, a tool that uses a local Large Language Model (LLM) to automate diagram generation.We leverage Ollama for running Llama 3.2 locally and the draw.io Model Context Protocol (MCP) to interact with the diagramming engine. The ProblemLLMs are great at text, but poor at spatial reasoning. Asking ChatGPT to "draw a di
I deleted 250 lines of tooltip positioning logic and replaced it with one prop
Had a hover card component in production. floating-ui, portal, resize observers, scroll listeners. ~400 lines. Standard tooltip positioning stack.During a refactor I actually read through it and realized the browser already knows how to solve this.Replaced the whole thing with layoutId from motion/react. Trigger avatar and card avatar share the same ID. Card opens, trigger unmounts, card mounts. Motion interpolates between the two positions automatically. Spring physics. No coordinate math. No p
Prototyping for Agent-First Apps
When you build an agent-powered app, the instinct is to start with the app â set up a project, install dependencies, write scaffolding. Then somewhere in the middle, you start figuring out what the agent should actually do.This is backwards.Agent-first means starting with the agent. Get the brain working first. Once the agent behaves the way you want, expand outward: add tools, then build the shell around it. The agent is the product â everything else is infrastructure.This matters because the a
đ Journey into the Void: Building a 3D Sci-Fi HUD with Vanilla JS
Hi everyone! đ Iâm Luigi, and Iâm currently on my journey to becoming a Front-End Developer. Today, Iâm excited to share my very first post here on DEV and show you a project Iâve been working on: Void Voyager 6.0 | Supernova Edition. đ The ConceptVoid Voyager is an interactive 3D experience designed to simulate a futuristic spaceship's command bridge. I wanted to challenge myself by merging sci-fi aesthetics with web performance, focusing on how immersive a browser experience can be.The co
I Reverse-Engineered a Game's RNG to Build a Strategy Engine with Astro & React
The Problem: "90% Success Chance" is a LieIf you've played Mewgenics (the upcoming RPG by Edmund McMillen), you know the pain. You see a "90% success chance," you click the button, and... FAILURE. You lose your best cat, your run ends, and you rage-quit.I got tired of guessing. I wanted to know why the math felt off.So, I decided to dig into the game files. I didn't just want a wiki; I wanted a Decision Engine. I wanted a tool that takes the raw data and calculates the exact probability of succe
GLM5 Released on Z.ai Platform
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Build an Advance Weather APP With ReactJS Sadee ă» Feb 11 #webdev #react #tutorial
Build an Advance Weather APP With ReactJS
đ Want to become a Fullstack Developer? https://scrimba.com/fullstack-path-c0fullstack?via=codewithsadee (Get 20% OFF Scrimbaâs Fullstack Developer Path using my link)In this video, weâll build a fully-featured Weather App from scratch using React and TypeScript.This is not just another beginner weather app.Weâll focus on real-world features, clean architecture, and modern React patterns used in production apps.đ What weâll buildFast search command with keyboard shortcutsLight / dark theme switc
AI Wonât Replace Frontend Developers in 2026 But It Will Replace Average Ones
AI wonât replace frontend developers.But it will replace developers who only focus on writing components.In 2026, AI tools can:Generate React componentsScaffold APIsRefactor legacy codeSuggest performance improvementsSo whatâs left for frontend engineers?Quite a lot.The Shift: From Coding UI to Designing SystemsModern frontend development is no longer about syntax.Itâs about:Performance optimization (Core Web Vitals)Scalable state managementRendering strategies (CSR vs SSR vs RSC)Design systemsA
Demystifying Redux Toolkit: A Peek Under the Hood with Plain JavaScript
A hands-on exploration of how Redux Toolkit simplifies state management while building on core JavaScript and Redux principles.Hey there! If you've ever wrestled with Redux in a real-world app, you know it can feel like a beast boilerplate code everywhere, actions flying left and right, and reducers that grow like weeds. That's where Redux Toolkit swoops in like a friendly sidekick, cutting the cruft and letting you focus on what matters: building features.In this guide, we'll pull back the curt
