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Every AI chat app has the same hidden performance bug. Go open ChatGPT. Stream a long response. Open DevTools → Performance tab → Record. Watch the
1. let — The Modern Variable let was introduced in ES6 (2015) and is now the preferred way to declare variables that can change their value
Teams タブアプリでビルド後に404が出る？HTMLキャッシュが原因かも はじめに Microsoft Teams タブアプリを開発していると、ローカル開発時に困る問題があります。 フロントエンドのコードを変更してビルドすると、Vite/Rollup
Hey DEV community! 👋 I just pushed a new educational puzzle game live on my web arcade, 7x.games. It’s called Number Bonds—a classic "part-part-whole
console.log works until it doesn't. In production, you need to answer questions like: "Why did this request fail for user 4821 at 3:14am?" — and conso
We built a Google Ads CSV analyzer that finds wasted spend and suggests optimizations. The twist? Everything runs in the browser. No server uploads. N
A $17 “done-for-you” puzzle business system. Is it actually worth it? The Pitch (What This Product Claims) At its core, this is a PLR (Private Label
Calculating someone's age sounds like a five-minute task: function getAge(birthday) { const diff = Date.now() - new Date(birthday).getTime(); r
Medusa is an open-source headless commerce platform. It provides REST and JS APIs for products, carts, orders, payments — build any storefront.
Ofetch is a better fetch from UnJS. Works in Node, browsers, Workers with auto-retry and smart JSON. Usage import { ofetch } from "ofet
Ky is a tiny, elegant HTTP client for the browser and Deno. Built on fetch, it provides retry, hooks, timeout, and JSON parsing in just 3KB.
Valtio makes proxy-based state management simple. Mutate state directly — React auto re-renders. Usage import { proxy, useSnapshot } fr
H3 is a minimal HTTP framework from UnJS that powers Nitro and Nuxt server. It is ultrafast, works everywhere (Node, Deno, Bun, Workers), and has zero
Vinxi is the full-stack SDK powering SolidStart and TanStack Start. Composable routers for any app. Config import { createApp } from "v
Electric SQL syncs Postgres with local SQLite for local-first apps with real-time sync. Sync + Local Queries const electric = await ele
Unplugin lets you write bundler plugins once and they work across Vite, Webpack, Rollup, esbuild, and Rspack. Create a Universal Plugin
Effect is a TypeScript library for building robust, composable applications. Think of it as a type-safe runtime for managing errors, concurrency, depe
htmx lets you build modern, interactive web apps using HTML attributes instead of JavaScript frameworks. Its API surface is tiny but incredibly powerf
Turso is the edge database built on libSQL (a fork of SQLite). It gives you embedded database performance with global replication — and a powerful SDK
Three.js is the 3D library that powers thousands of immersive web experiences. Its API gives you WebGL, WebGPU, and physics — all in JavaScript.