Justin Fagnani

Programming and things

What should a native DOM templating API look like?

Web DevelopmentStandards
Given the web platforms many constraints, and the requirements for a templating feature, what should a native DOM template API look like? What are our options?

The time is right for a DOM templating API

Web DevelopmentStandards
Declarative templating is one of the most-used techniques in web development, and one of the biggest missing developer-facing features of the web platform. Now is a great time add a templating API to the DOM.

Stop Using CustomEvent

Web Development
You should never use `CustomEvent`. Instead, subclass the native `Event` class.

Composite Map Keys in JavaScript with Bitsets

JavaScript
Sometimes you need to store and retrieve information related to groups of objects. One way to do this is by using BitInt bitsets as composite map keys.

I'm Going to Need to Blog a Lot More

Blogging
With Twitter getting a lot worse, I'm going to need to blog a lot more...

Reactive State with Signals in Lit

JavaScriptSignalsLitWeb Components
Today the Lit project release a new Lit Lab's package that I've been working on for a while that integrates the Signals TC39 Proposal with Lit: `@lit-labs/signals`! 🎉

How to Publish Web Components to NPM

Web ComponentsnpmJavaScript
What follows is my personal checklist for publishing web components to npm. This checklist attempts to maximize compatibility, standards compliance, flexibility, and usefulness to your users.

Enhancing Mixins with Decorator Functions

JavaScriptOOPmixins
Last time, in "Real" Mixins with JavaScript Classes, we saw how we can create powerful ES6 mixins by using class expressions as subclass factories. Now, let's look at some enhancements that make our mixins more powerful, in a way still requires no framework for mixin users, and is…

"Real" Mixins with JavaScript Classes

JavaScriptOOPmixins
Mixins and Javascript: The Good, the Bad, and the Ugly. Mixins and JavaScript are a like the classic Clint Eastwood movie. The good is that composing objects out of small pieces of implementation is even possible due to JavaScript's flexible nature, and that mixins are fairly popular in certain circles.

Getting Things Done... Like This Blog!

I've intended to launch a blog at justinfagnani.com for a very, very long time now. Prevailing over my procrastinating and complexifying nature I've finally done it, but only by cutting almost every corner possible. After a brief flirtation with blogging about Dart at dartery.blogspot.com, I wanted a…