esprima VS vike

Focusing again on ESLint, the parser used by the linter is called Espree. This is an in-house parser built by the ESLint folks to fully support ECMAScript 6 and JSX on top of the already existing Esprima. The Espree module provide APIs for both tokenization and parsing that you can easily test out.

For TypeScript we have used AST transforms from their compiler API, and for plain JavaScript we did a similar thing using ESPrima. This helped us implement some simple optimizations like stream fusion (combining .filter and .map into a single operation) or avoiding extra object allocations in vector math, which led to nice performance improvements in code that does heavy computation (we process large amounts of data on the server and store results of physics simulations).

I used ESPrima, but any parser would do in this case. I then wrote a simple function to extract all "atomic" non-boolean expressions from it.

AST is an acronym for Abstract Syntax Tree. It's the way to represent code in a format that tools can understand. Usually in form of tree data structure. We will use AST in the format of an Esprima, which is a JavaScript parser that outputs AST.

esprima

Create an AST: Esprima

The thread was originally about CRA vs Vite size on disk (or implicitly, if we're applying it to real world applications, network cost in CI job startup times). And like I said, surrogate pairs don't apply to ASCII.

See this[0] for reference. Note how the first byte must fall within a certain range in order to signal being a surrogate pair. This fact is taken advantage of by JS parsers to make parsing of ASCII code faster by special casing that range, since checking for a valid character in the entire unicode range is quite a bit more expensive[1].

[0] https://github.com/jquery/esprima/blob/0911ad869928fd218371b...

[1] https://github.com/jquery/esprima/blob/0911ad869928fd218371b...

If you want to learn more about parsing, reading the code of an actual recursive parser might be a better idea. Esprima is a decent place to start if you're interested in JS grammar. Then you can look at the babel handbook to learn more about AST transformations. From there, the literature gets quite a bit more heavy. If you get this far and are willing to push further, you'll probably want to grab yourself a copy of the dragon book at a minimum.

Here are some collected notes of the distinctions between SSRx, Vinxi and Vike, to share with anyone else searching the web. Since my Google search came up empty, and I had to ask around on Twitter/X and GitHub to find out.

We're working on exactly this. You can already do this with Triplit but it's challenging to make an out of the box solution because each framework passes context/data different from server to client differently. There's a cool project called [Vike](https://github.com/vikejs/vike) that generalizes this pattern across SSR'd UI frameworks

Anyone have experience with https://github.com/vikejs/vike?

have you seen https://vite-plugin-ssr.com/ ? i've only browsed their docs, but AFAICT their pitch that it's a more DIY approach to a framework, where you keep a lot of control over how things are wired together.

I agree and, as the author of vite-plugin-ssr[1], that's what I recommend to my users: go for static whenever you can.

I think it's something every web developer should be aware of. Static is indeed a lot simpler than dynamic.

I've wrote more about it over here[2] (SSG = static, SSR = dynamic).

[1]: https://vite-plugin-ssr.com

Maybe vite-plugin-ssr? It's pretty unopinionated and doesn't get in your way.

Also have a look at https://vite-plugin-ssr.com/ (author here).

VPS is slightly lower level which gives you a lot more control: integrate with your existing Node.js backend (use any backend framework you want), deploy anywhere, use any React alternative (Solid, Preact, ...) and any data fetching tool (e.g. Relay can't really be used with Next.js).

The flip side is that you've to write a little bit more glue code. Although this will be alleviated by a lot with projects such as Bati[0], Stem[1], and vike-react (see Vike Rebranding[2]).

VPS also cares a ton about details, such as hooks for full control over i18n (use any i18n strategy you want), better Base URL support (VPS supports setting a different base for your server and your CDN), automatic deploy synchronisation, domain-driven file structure, polished and helpful error messages (especially the next upcoming release), ...

Detailed comparison with Next.js: [3].

If you run into any blocker then it's quickly fixed (or at least a workaround is proposed).

It supports not only SSR and pre-rendering, but also SPA in case you don't need SSR. It's going to support RSC but doesn't yet (RSC isn't ready for production).

Because it's lower level and because it's decoupled from React everything is designed in an agnostic way and with meticulous care. In other words: vite-plugin-ssr is becoming a robust foundation. There are breaking changes coming for the v1 release but beyond that chances are that there won't be any breaking change for years in a row.

In a nutshell: vite-plugin-ssr takes care of the frontend and only the frontend. You keep control over your architecture. (Whereas frameworks tend to put themselves right in the middle of your architecture restricting you in fundemetanl ways.)

Last but not least: it's powered by Vite which means blazing fast HMR.

[0] https://batijs.github.io

[1] https://stemjs.com/

[2] https://github.com/brillout/vite-plugin-ssr/issues/736

[3] https://vite-plugin-ssr.com/nextjs-comparison

Now by default, Vite doesn't do SSR. One way to do Vite+SSR is to use vite-plugin-ssr. You can scaffold an example project that does SSR based on some dynamic data:

vite-plugin-ssr