single-spa VS Svelte

Single-SPA Framework - One of the most popular choices. It has a large community behind it and offers robust routing and lifecycle management for microapps. Ref - https://single-spa.js.org/

Joel Denning is the visionary behind single-spa, boasting profound insights into the true mechanics of the web and is, in my view, a pioneer in micro frontend architecture. I highly recommend checking the single-spa website and his YouTube channel. While the videos might appear dated at first glance, rest assured, Joel is ahead of his time, and the content remains incredibly relevant today.

I’ve actually done that “web components as the interoperability layer”!

It was this old angular 1.8 app with new features being written in angular-hybrid-ized angular 8. Ripping out angular-hybrid and separating the angular 1.8 routes from the modern angular routes was difficult, but now they were totally separate.

The only thing linking them together was an object with some RXJS streams in it for state, and a little in-house wrapper “app” who just loaded one component or another depending on the URL and a hash of routes for config. (I’d probably use SingleSPA [1] now. Same thing really.)

We could deploy them separately since the build just ends up being another JS file somewhere that just gets included with a script tag at runtime. No version bumping! No big mega build!

We started replacing the remaining “old” routes 1 by 1 with a “new” counter part. That was the easiest part, and went at a pace devs were comfortable with (fast enough) and business folk could tolerate. (modular enough to not HAVE to be done all at once)

Last I checked, the angular 1.8 stuff is gone years ago. :)

[1] https://single-spa.js.org/

Module Federation is not the unique solution, for example single-spa

Single-SPA and module federation are potent tools for building scalable micro-frontends. Single-spa provides a framework for building a modular front-end application. It allows lazy loading of micro-frontends, which helps improve the application's performance. In contrast, module federation enables communication and dependency sharing between different micro-frontends. It reduces code duplication, which can help with scaling an application.

Since micro-frontend allows us to develop applications individually, this also means you can use different frameworks and libraries together to develop each section of this application. Of course, this will have some advantages and disadvantages. If you are using different technologies to serve different parts of the application, it won't be so easy to move developers within teams. However, the door is open, and if you want to do something like that, you could use something like Single SPA, or some other, to help you organize and connect the different technologies into a larger application.

Using single-spa

There are numerous micro-frontend frameworks like Single SPA, Open Components, Mosaic, and so on The configuration for these tools can get complex and difficult to manage as we add more apps since they require configuration at each layer — routing, dependency management, and development. This would complicate our tooling and hence, would not work for us.

Similarly to Promises/A+, this effort focuses on aligning the JavaScript ecosystem. If this alignment is successful, then a standard could emerge, based on that experience. Several framework authors are collaborating here on a common model which could back their reactivity core. The current draft is based on design input from the authors/maintainers of Angular, Bubble, Ember, FAST, MobX, Preact, Qwik, RxJS, Solid, Starbeam, Svelte, Vue, Wiz, and more…

Svelte is a powerful web framework that offers a fresh approach to building web applications. Its simplicity, reactivity model, and built-in features make it an excellent choice for developers looking to create efficient and maintainable applications. By following this guide, you should now have a good understanding of how to get started with Svelte and build your first components, routes, and transitions. You can read more about svelte on the official Svelte website.

Use .NET features (especially dotnet watch) as a setup for a client-side Svelte application, starting from a simple C# console app.

Volar originally was Vue3's language support tool for VScode (I don't know about other editors). By today, volar has become a language indipendent framework to create language tools. It might still be a bit early for the dev with skill issues like me to use it and build some tools, but astro and svelte already use Volar to create their language tools.

The thought that came to mind was to use a front-end framework or library like React or Svelte.

Now that I've chosen to learn Svelte for building my website, the first I did was visit Svelte's website. Then I went to Svelte's interactive tutorial.

Basic knowledge of Javascript and Svelte

Svelte is a cybernetically enhanced way of building web applications, what this simply means is that Svelte provides quite a unique way for us to build a web app by shipping as a compiler. Yes, you heard that right, all of the Svelte code you write gets compiled down into a Javascript executable and this has some amazing benefits, first, the compiler can perform some optimization before spitting out the final executable and this can result in performance gains as with the case in apps built with Svelte.

Svelte is a JavaScript tool for constructing UI components, similar to other UI frameworks like React and Vue. However, what sets Svelte apart is that it functions as a compiler, transforming the code into a form compatible with native browser APIs.