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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.

A Proposal to Add Signals to JavaScript — A (very) early stage proposal for bringing a new feature to ECMAScript/JavaScript: signals! The proposal brings aboard ideas from a swathe of popular frameworks and aims to align everyone and get us on the same page when it comes to working with state and making updates based upon changes to state. Rob writes more about the...

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!

Bun 1.1 Released: Now Supports Windows Too — With the lighthearted codename of Bundows, the alternative server side runtime now runs directly on Windows 10 and up (plus WSL, macOS and Linux, of course). This is a key step in its adoption, with even features like Bun Shell happy on Windows out of the box. Node compatibility continues to improve with support for node:http2...

What Even Is a JSON Number? — Despite the presence of standards around JSON, the answer is more complicated than you’d think, particularly when it comes to interfacing with other ecosystems and languages that aren’t JavaScript.

Everything I've Learned About Scaling Designs Systems (With Examples) — I've learned a lot about what it takes to build, maintain, and scale design systems initiatives at large companies.

The BFCache Explained — The back/forward cache (‘bfcache’) is a browser optimization that makes going back and forward in the browser a faster experience – it’s been present for years and usually leaves you alone as a JavaScript developer, but there are things worth being aware of.

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.

Fancy-ANSI: Convert ANSI Text to HTML — If, for some reason, you want to convert text with ANSI escape codes into HTML.. Lots of examples on the homepage. 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.

svelte-zoomable-circles: Svelte Component for Browsing Hierarchical Data — A Svelte component for displaying and browsing hierarchical data using zoomable circles. Live demo.