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Announcing TypeScript 5.5 Beta — It’s not even the final release (expect that in a month or two) but 5.5 has many people excited as it has many major enhancements, including inferred type predicates, the ability to import types in JSDoc via comments, regex syntax checking, isolated declarations, and more. If you want more practical examples, Matt Pocock 🐦 wrote a good Twitter thread.

Node.js v22 (Current) Released — The newest, cutting edge, major version of Node lands with some key enhancements. v22 becomes the new ‘current’ release (becoming active LTS in October). It adds support for require-ing ESM, gets a built-in WebSocket client, upgrades to V8 12.4, and includes a task runner (e.g. node --run task_name). This blog post takes a closer look.

pnpm 9.0: The Efficiency-Focused Package Manager — pnpm has long been a fantastic option for folks looking to save disk space and CPU cycles (or for its great monorepo support) while maintaining most of what makes npm great. v9.0 drops Node 16 and 17 compatibility, honors the packageManager field in package.json, makes some default config changes, and adopts Lockfile v9.

The Frontend Developer/Engineer Handbook 2024 — A guide to the current webdev landscape, covering how to get up to speed on topics like editors, CSS, UX, UI, the command line, tools and frameworks, perf, accessibility, etc.

HTML Attributes vs DOM Properties — They’re different, but often coupled. Jake outlines the the difference, and why it matters.

▶  A Node.js Streams Masterclass — An hour-long odyssey with the creator of Fastify (and Node.js TSC member) into the world of streams. A stream is like an array over time.. we learn, before going into live coding and demos.

ReScript 11.1 Released with Improved JSX Support — ReScript is an OCaml-inspired, typed language that compiles to JavaScript and has a JSX transform built into the language. JSX support was previously solely for React use cases, but now works with Vue, Preact, and other approaches too.

Building a CLI from Scratch with TypeScript and oclif — oclif is a mature CLI tool development framework maintained by Salesforce. This tutorial goes from zero to something that works.

Profiling Node.js Performance with Chrome's Performance Panel — Learn how to profile Node performance with Chrome's Performance panel. (The JS Profiler is going away in Chrome 124, so you'll need to become familiar with the newer approach.)

Frontend Development Beyond React: Svelte — A surprisingly thorough article going deep into one developer’s research into using Svelte to build modern front-end apps. If you’ve never experimented with Svelte, this is a good primer to the key concepts, tradeoffs, and techniques involved.

🛠 A JS Bin to Play with the TC39 Signals Proposal — Last week, we featured the proposal to add signals to JavaScript and by way of a polyfill, you can get experimenting with it right now.

zx v8.0: Write Better Shell Scripts with Node — A popular way to make shell scripting a more pleasant experience in Node with useful wrappers around child_process, argument escaping, and sensible defaults. v8.0 makes zx 20x smaller, faster, makes it easier to kill processes, pass input to commands & more.

On Developing Figma Plugins — Some interesting observations on the experience of creating Figma plugins in JavaScript, including how they’re sandboxed and some implementation details of the author’s own plugin.

Some DevTools Tips and Tricks — Most developers barely scratch the surface of what DevTools can accomplish, says the author, who shares ten tips here.

Madge 7.0: Create Graphs From Your Module Dependencies — A tool for generating a visual graph of module dependencies, finding circular dependencies, and discovering other useful info.

PythonMonkey: A JavaScript Engine in the Python VM — If you need to use Python but also want to run JavaScript, this gives you a way to do it with the Mozilla SpiderMonkey JS engine embedded into the Python runtime with Python providing the host environment.

Faces.js: A Library for Generating Vector-Based Cartoon Faces — The end results are somewhat reminiscent of how the Nintendo Wii generates random Miis. Faces are drawn as SVGs with each also represented by a JavaScript object so you can draw them again later.

Color.js 0.5: 'Let’s Get Serious About Color' — A fantastic library for working with colors in the browser, following the latest specs. It’s even been used by browsers to test their CSS Color 4/5 implementations.

Kosko: Organize Kubernetes Manifests in JavaScript — Version 4.1 has just been released with a new plugin system.

Build a RAG Chatbot App with MongoDB and Node.js — Embark on the RAG to Riches Developer Quest — a month of innovation, learning, and exclusive rewards awaits you. You’ll interact with AI-enhanced bots and learn how to build your own with Atlas Vector Search and Node.js. Register now!

Cally: Small, Feature-Rich Calendar Components — A collection of open-source calendar components for selecting single dates or date ranges. Framework-agnostic, themeable, localizable, and accessible (it even has an accessibility statement showing its commitment to this area).

📊 Counterscale: Scalable Web Analytics You Can Run on Cloudflare — A simple web analytics tracker and dashboard that’s designed to be easy to deploy and maintain by hosting it on Cloudflare (for free too, up to a certain level).

🎵 Tonal.js: A Music Theory Library — Packed with functions to manipulate tonal elements of music like notes, intervals, chords, scales, modes, and keys, and used as the basis of other music related projects. GitHub repo.

Dioma: Dependency Injection Container for Vanilla JS and TS — No decorators, no annotations, no magic, no dependencies – you just add the static scope property to your class and use inject to get an instance.