Fable.Lit VS spectrum-web-components

The other major frameworks I use are tailwindcss for styling and Fable.Lit for the views.

Lit for Lit components.

The Feliz DSL https://zaid-ajaj.github.io/Feliz/ looks fairly similar to Reagent or there's Fable.Lit https://fable.io/Fable.Lit/ which is more like jsx in that you write the html directly, adding active components via interpolated string mechanisms. There is a VS Code add in that gives you html+css syntax highlighting and auto complete inside your F# files.

This is my personal favorite one when it comes to Fable options, Fable.Lit builds on top of lit.dev which is a web component library built on web standards. It brings performant straightforward and inter-framework compatible components to the F# FE landscape since Lit works with DOM elements themselves rather than abstractions you can manipulate component instances like if you were doing vanilla JavaScript except that you can use the F# safety for that.

Around September vite got traction with the vue user base and other users as well. I also studied a bit the vite source code, and even used it for some Fable material for posts. I was trying to make some awareness of Fable.Lit support for Web Components and I wanted to experiment in reality how good vite was, and boi it's awesome If you're starting new projects that depend on node tooling in my opinion, it's your best bet.

I don't know a ton about Fable, but they recently wrapped Google's Lit to allow building functional templating and web components in it: https://fable.io/Fable.Lit/

Seems like a neat project.

Try Lit.Fable today!

Check the fable.lit github repository to see also ways to interact with inter-operate Lit + React within Fable!

For example, all the following design systems can be used without tooling (some of them provide ready-to-use bundles, others can be used through import maps): Google's Material Web, Microsoft's Fluent UI, IBM's Carbon, Adobe's Spectrum, Nordhealth's Nord, Shoelace, etc.

sp- (Spectrum components from Adobe6)

Spectrum web components by Adobe is really mature design system that makes a lot of usage of Lit Elements. Their testing setup uses the suggested web test runner. Lit's documentation on testing suggests using that library.

In Fable.Lit rather than building an F# DSL (we tried) we use a string-based alternative which is closed to the HTML you know and love, this also helps a lot when you have to consume web components like those from shoelace.style, fast.design, adobe spectrum components, and more, this will be a very important and big point over the next few years now that web components have taken off finally with major companies like Microsoft, Salesforce, Github, Adobe and more are using them.

Oh hey, that me! We at Adobe are investing heavily in web editors built with web component technology. Not just Photoshop, but Illustrator, Lightroom, and a number of brand new or in development applications across the company, as well.

We’re also leveraging web components to support interoperability of our design system across teams who still choose to use frameworks or have been using them all this time. In this way we ship https://opensource.adobe.com/spectrum-web-components/ and teams like fonts.adobe.com that have a long standing Angular app, or edex.adobe.com with their long standing Vue app or various recent acquisitions with their own technical decisions, can all consume Spectrum design without shipping their own implementation or rewriting their app to another stack.

The ease of building at depth scale for large applications and at breadth scale for applications no matter their architectural decisions has been a huge win for Adobe and our goals to drive consistency and quality across the company. The speed and scope at which we’ve been able to do so just wouldn’t be possible without web components.

Recently, I had the opportunity to discuss the difficulties, learnings, and victories or developing Spectrum Web Components together with fellow custom element developers from teams at IBM, ING, SAP, and Vaadin. If you missed the live stream, check out the recording! Fellow panelist, Ari Gilmore, made a great point that there is a lack of reading material for developers like ourselves to draw from when looking to build solid accessibility practices into the web components space. With that in mind, I thought it would be a good idea to take some of the abstract concepts we discussed in the panel and share some actual examples of working and testable code. Hopefully, this can better support the next developer(s) looking to bring a high-quality, accessible, design system to life for their team via web components.

Their repos are public: - https://github.com/adobe/spectrum-web-components - https://github.com/adobe/react-spectrum

It does seem like I enjoy a good . I mean, look, I wrote about them all the way back in 2018 in ing in Some Tips, and then in 2020, I spoke about Stacked Slots at a virtual Web Components SF meetup (see the associated slides), before sharing a proof of concept for Light DOM as Model. And, as if that weren't enough, here we are again, and I'm writing to you, friend, about s. Today, we're going to get out of the theoretical and into the practical as we start on the path towards actual usage of Stacked Slots that I'm excited to bring to life as part of Adobe's Spectrum Web Components to support the delivery of Spectrum design's Help Text pattern.