The JavaScript Date Quiz — Prepare to get irritated? JavaScript’s native date parsing features are notoriously arcane and prone to cause surprises if you step off the beaten track. So while we await the broad availability of the Temporal API, why not put your assumptions and knowledge to the test with an educational quiz?

Sam Rose

Next.js 15.4 Released (and What's Coming in Next.js 16) — A relatively small release for Next, but with updates to performance, stability, and Turbopack compatibility, and a good summary of what’s coming next in Next.js 16.

Jimmy Lai and Zack Tanner

Add SSO & SCIM with Just a Few Lines of Code — WorkOS offers clean, well-documented APIs for SSO, SCIM, RBAC, and more, so you can focus on building features your users care about. Trusted by engineering teams at Cursor, Replit, Vercel, and Temporal.

WorkOS sponsor

WebAssembly: Yes, But for What? — Writing for ACM Queue, one of the contributors to multiple JavaScript and WebAssembly (WASM) implementations shares a good roundup of where WebAssembly is being used, both in the browser and server-side, and how it’s gradually finding its way into seemingly everything.

Andy Wingo / ACM

How to Create an NPM Package in 2025 — One of JavaScript’s most essential tasks, but one with numerous steps involved if you want to follow best practices, integrate useful tools, and get things just right. Matt Pocock rounds up the overall process here.

Matt Pocock

The History of React Through Code — An epic article charting React’s evolution from its origins at Facebook through to now. It sheds light on React’s core philosophies and the motivations behind major decisions. This is a great way to round out your thinking about, and knowledge of, React's overall story.

Corbin Crutchley

How to Build an AI Coding Rules App with Lovable — Guide AI to generate a secure, full-stack app with minimal prompts—learn how to turn ideas into working software fast.

Clerk sponsor

A Better Promise.all() – Utility Types and Functions — Utility types and functions that make deep promise handling more ergonomic and type-safe.

Nick Keuning

Tiptap v3: The Headless Rich Text Editor Framework — Tiptap provides a fantastic base for putting together powerful rich text editing experiences, and v3 includes a lot of DX improvements like being able to unmount and remount editors (ideal for dynamic UIs), ‘Markviews’ for creating custom views for text segments (marks) using your own components, an SSR mode, and more. GitHub repo.

Tiptap GmbH

✉️ Upyo: A Simple Cross-Runtime Email Sending Library — A cross-runtime email library that provides a unified, type-safe API for sending emails both on SMTP and HTTP-based (e.g. SendGrid or Amazon SES) providers. TIL that ‘upyo’ (우표) means ‘postage stamp’ in Korean.

Hong Minhee

No Breakpoints, No console.log — Just AI & Time Travel — 15x faster TypeScript and JavaScript debugging than with breakpoints and console.log, upgrading your AI agent into an expert debugger with real-time context.

Wallaby Team sponsor

Hyper Fetch: A 'Turbocharged' Fetch Library for Working with Remote APIs — A framework-agnostic, Axios and TanStack Query-inspired type-safe data-fetching framework for browser and server environments, with request lifecycle management, real-time communication, progress tracking, and codegen for Swagger/OpenAPI. GitHub repo.

Maciej Pyrc et al.

GrowField: Small, Dependency-Free Module for Making Textarea Elements Grow — Very simple. For when you’ve got a textarea input and you want it to grow as more content is added to it.

Five Fifteen