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Removing handwritten API types with tRPC RouterInputs and RouterOutputs

This article is an English translation of the original Japanese article.tRPC can derive every procedure's input and output types from the router definition. The UI does not need to repeat the server response as an interface such as interface Schedule { ... }.I use tRPC v11 in a monorepo containing a Next.js web app and an Expo mobile app. The web side defines these two helper types:import { type inferRouterInputs, type inferRouterOutputs } from "@trpc/server";import { type AppRouter } from "~/se

Handforged Door Hardware: Where Traditional Craftsmanship Meets Modern Durability

Your front door is more than an entrance—it is one of the first details people notice about your home.Yet finding door hardware that combines security, durability, and timeless design can be surprisingly difficult. Many mass-produced handles, hinges, knobs, and gate fittings are designed for quick manufacturing rather than long-term performance. The result can be loose handles, sagging hinges, weak fixings, corrosion, and finishes that lose their appeal far too quickly.If you are restoring a per

Migrating a Headless CMS? Your Frontend Shouldn't Know About It

A headless CMS migration often sounds simple:Contentful → StrapiMove the content, update the API calls, fix a few components, and you're done.Except... you're usually not.The hardest part of a headless CMS migration isn't moving the content.It's managing the contract between the CMS and the frontend.And if your React or Next.js application is tightly coupled to the CMS response structure, changing the CMS can turn into a much bigger project than expected. The problemImagine your frontend di

My Timer Kept Doubling — and It Took Me a Real Bug to Actually Understand useEffect

I finished my Tenzies capstone project (built with React) and I want to talk about the one bug that taught me more than any tutorial did.🔗 Live demo: tenzies-six-silk.vercel.app🔗 Code: github.com/BlackJosh007/tenziesI was adding a timer — track how long it takes a player to win. Simple feature, I thought. I set up useState for the elapsed time, useRef for the interval ID, and a useEffect to start the interval once the player held their first die.It worked... sometimes. Other times my timer would

Architectural Breakdown: My Dev.to CLI Got Its First Community PR. Image Uploads From Terminal.

Dev.to CLI Image Uploads: Engineering Within LimitsThe Dev.to CLI recently gained terminal-based image uploads through its first community PR. The feature worked perfectly until a 5MB image crashed an 8GB instance. This is the technical breakdown of what happened, the fixes applied, and the constraints now enforced. The Crash: Memory Exhaustion by DesignThe original implementation appeared harmless:def upload_image(image_path: str) -> str: with open(image_path, "rb") as f:

13 Best Places to Buy Old & New Instagram Accounts..2026

Old Instagram Accounts: Complete Guide to Account Age, Security, Risks, and Safer Alternatives🚪🚀💬📞📩 We’re always ready to help you 24/7! 😊💯🔥      📱💬🟢📞🌐🔥 ☎️ 💬 Telegram: @getpvatop 📲🟢💬📞🌍🚀 ☎️ 📱 WhatsApp: +1(873)710-7167 📱🟢📞💬🌐⚡ ☎️ 💭 Email: [email protected] 📲💬🟢☎️🌎🔥 📞 💬 Discord: account service📱📞🟢💬🌍✨ ☎️ 📲 our company: Get PVA Top Zone – Worldwide Service ProviderIntroductionThe phrase “Old Instagram Accounts” is commonly used to describe Instagram accounts that ha

Making My Instagram Analyzer Actor Safe For An Ai Agent To Call On Its Own

Making My Instagram Analyzer Actor Safe For An Ai Agent To Call On Its OwnApify's MCP server (mcp.apify.com) exposes any published Actor as a callable tool for AI agents - Claude, Cursor, whatever supports MCP. An agent can search-actors, inspect one with fetch-actor-details, and call-actor without you writing any glue code. That sounded almost too easy, until I actually looked at what an agent would see if it called my Instagram Influencer Deep Analyzer with no context beyond its input schema.

Debugging Async/Await Deadlocks in JavaScript: Proven Techniques to Resolve Stalled Promises

IntroductionAsync/await has become the de‑facto way to write asynchronous code in JavaScript, but misuse can lead to subtle deadlocks that stall the entire event loop... Why deadlocks happen... Example of a deadlocklet lock = false;async function criticalSection() { // Wait until the lock is released while (lock) { await new Promise(r => setTimeout(r, 10)); } lock = true; // acquire // ❌ The following await never resolves because it tries to acquire the same l

MyKitApp Just Got Better: Code Formatting, Syntax Highlighting & Line Numbers

MyKitApp Update: Code Formatting, Syntax Highlighting & Line NumbersI've just shipped a new update to MyKitApp, making the code-related tools much easier to read and work with.👉 https://www.mykitapp.com/ What's new?✨ Code FormattingFormat messy JSON, SQL, JavaScript, HTML, CSS, Markdown and other supported formats into clean, readable code.🎨 Syntax HighlightingCode is now displayed with syntax highlighting, making keywords, strings, numbers and other elements much easier to scan.🔢

Swagger Codegen Alternative: Free OpenAPI to TypeScript Client Generator

Swagger Codegen Alternative: Free OpenAPI to TypeScript Client GeneratorTired of wrestling with Swagger Codegen just to generate TypeScript client code from your OpenAPI specs?I built a completely free, browser-based alternative that works instantly — no Java, no Docker, no config files. The ProblemSwagger Codegen is powerful but comes with real pain:Java dependency — need a JVM installed (200MB+ download)Docker overhead — often needed for clean, reproducible buildsComplex setup — spe

How I Built a Free AI Chatbot With 12+ Models, Voice, Coding, and Image Generation — All for $0

How I Built a Free AI Chatbot With 12+ Models, Voice, Coding, and Image Generation — All for $0I spent the last few months building Free AI — a completely free AI assistant that does what paid tools charge $20/month for. Here's what it can do and how I built it.What It Does:Chat — unlimited messages, no daily capsWeb search — answers with live source citationsCode execution — runs JavaScript, Python, TypeScript, HTML/CSS, and more in the browserImage generation — free AI image creationVoice conv

eBay's Browse API Doesn't Return Sold Listings. Here Is a Node.js Alternative

If you are building a pricing, resale, or inventory tool, active listings answer the wrong question. The price a seller asks for an item is not necessarily the price a buyer paid.eBay's public Browse API returns active inventory. Marketplace Insights covers sold history, but access is restricted. That leaves many developers maintaining search-page parsers or using a sold-data provider.This example uses CompSniper because it returns completed listings and a price summary through one GET request.D

Which tools do Claude, Codex and Cursor choose? We measured 17k runs to find out

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HTTP Security Headers Explained: A Practical Guide for Developers

HTTP Security Headers Explained: A Practical Guide for DevelopersA website can use HTTPS, strong passwords, authentication, and secure application code and still have security weaknesses that browsers can help mitigate.One of the simplest ways to add another layer of protection is through HTTP security headers.Security headers allow a web server to tell the browser how certain resources should be handled, whether a page can be embedded, which origins can load content, and how much informat

I Built a Liquid Navigation Bar with CSS & JS (No Libraries)

I wanted a nav bar that felt a little more alive than a standard tab bar, so I built a "liquid navigation" component — a bubble that dives, travels, and resurfaces under whichever icon is active. How it worksThe core trick is an SVG goo filter — a Gaussian blur followed by a contrast-boosted color matrix — which fuses overlapping shapes into one smooth blob instead of two hard-edged circles. On top of that, I used the Web Animations API to drive a 3-phase motion: dive down flush into the ba

React as template engine

In the previous article, we set up the project: we installed React, TypeScript, and Tailwind CSS.Now let's start diving into React itself. And we'll begin with components. React as a Templating EngineWhat are templating engines? When working with plain HTML, we might run into repeating structures, for example, user cards:<div class="user-card"> <img src="..." alt="Alex"> <h2>Alex</h2> <p>Backend developer</p></div><div class="user-card"&

TypeScript Access Modifiers in 2026: Why `private` Fields Beat `#` and When the Opposite Is True

TypeScript Access Modifiers in 2026: Why private Fields Beat # and When the Opposite Is TrueThis article was written with the assistance of AI, under human supervision and review.Most privacy bugs in TypeScript codebases stem from misunderstanding the two fundamentally incompatible encapsulation models: compile-time private modifiers and runtime ECMAScript # fields. Teams pick one arbitrarily, ship to production, then discover edge cases where their choice breaks catastrophically.The TypeS

Build an XRPL Token Screener in About 50 Lines

There are 20,357 tokens issued on the XRP Ledger and only 1,443 of them traded today. A screener is how you tell those two groups apart.Here is a complete one. No dependencies, runs on any Node 18+. The whole thingconst API = 'https://api.xrpl.to/v1';async function get(path, attempt = 1) { const r = await fetch(API + path); if (r.ok) return r.json(); if ((r.status === 429 || r.status >= 500) && attempt < 4) { await new Promise(s => setTimeout(s, attempt * 4000)); r

From v1 to v2.9: how AdaptTable grew into a full React data-grid toolkit

Back in July I wrote the first post about AdaptTable.The project was still v1, and the idea was fairly focused: one table engine that could sit behind the UI kit a React project already uses.MUI project? Use the MUI adapter.Mantine? Use Mantine.Ant Design, Chakra, Radix, shadcn, Base UI, or your own Tailwind styles all sit on the same engine too.That model is still there. The engine behind it has just grown a lot since then.The core is at v2.9 now.GitHub · Live demo · Getting started The fe

Feedback that knows which component it came from

Every feedback tool I've used has the same shape. You install a widget, the widget opens a box, the user types something into the box, and the thing that lands in your inbox is a paragraph of text with a page URL stapled to it. Then you spend twenty minutes working out which component they meant."The new thing is confusing"Which new thing. There are four new things on that page. The feedback isn't really attached to anything useful. At best it's attached to a page, and a page is not the unit you