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I Built a Privacy-First Currency Converter in 2 Weeks
The Problem 🤦♀️ Every currency converter I tried had issues: - ❌ Forced sign‑ups and email collection - ❌ Tracked user behavior with cookies - ❌ Loaded slowl...
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RAID-AI: A Multi-Language Stress Test for Autonomous Agents
Introduction We’ve all seen the demos: an LLM generates a clean React component or a Python script in seconds. But in the real world, engineering isn't just ab...
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Show HN: Phantas – A browser-based binaural strobe engine (Web Audio API)
Hi HN, I’m a new developer with Aphantasia no mental imagery. A side effect of this is that regaining focus after a distraction takes me a long time the '23-min...
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Why I Built a 100% Private File Converter Using WebAssembly (No Server Uploads)
The Problem with Cloud Processing Most “free” online file converters are a privacy nightmare. When you upload a PDF or an image to a service like ConvertMyFile...
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How to Reduce Bundle Size in Next js
When I first started working with Next.js, I loved how fast it was out of the box. As the project grew, the bundle size kept increasing, leading to slower load...
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OS X Style Dock (Tsunami effect)
markdown !Forem Logohttps://media2.dev.to/dynamic/image/width=65,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2...
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JavaScript Closures: The Quiet Mechanism Running Your Code
I avoided closures for longer than I care to admit. Not deliberately. I just kept telling myself I understood them because I could repeat the usual line: “a clo...
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Replacing JavaScript with Just HTML
Article URL: https://www.htmhell.dev/adventcalendar/2025/27/ Comments URL: https://news.ycombinator.com/item?id=46407337 Points: 16 Comments: 1...
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Coding Challenge Practice - Question 88
Overview Implement an EventEmitter that allows subscribing to events, emitting events with arguments, and releasing specific subscriptions. Boilerplate javascr...
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JavaScript vs TypeScript - I built the same crypto tracker with both
If you are building a web application today, there are two heavyweights competing for your attention In the red corner, we have JavaScript—the king of the web;...
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🔑 O que é useId no React?
O useId é um Hook do React disponível a partir da versão 18 que gera identificadores únicos e estáveis dentro de um componente. Ele retorna uma string garantida...
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🚀 O Poder da Teoria dos Conjuntos na Programação: Lodash como Aliado na União e Diferença de Dados
O Conceito de Conjunto Set Vamos ver como o Lodash nos ajuda a aplicar isso na prática, comparando-o com o código JavaScript “puro”. Exemplo 1: União Combinand...