just

Well hold on a second. The JS impl that you're talking about uses a minimal custom runtime (https://github.com/just-js/just) that you would never use—it barely implements JS. It's basically only used for this benchmark. It doesn't make sense to compare that to Go when we're talking about Javascript vs. Go performance. Scroll down to the "nodejs" entry for a more realistic comparison.

The creator of JustJS has written about how it's so fast actually: https://just.billywhizz.io/blog/on-javascript-performance-01... (Related GitHub thread: https://github.com/just-js/just/issues/5)

i just tried recompiling v0.0.2 (https://github.com/just-js/just/releases/tag/0.0.2) of just-js and comparing it to current. for the completely static build on ubuntu 22.04 i see following: 0.0.2 (v8 v8.4.371.18) - file size: 15.2 MB, startup RSS: 8.4 MB current (v8 v10.6.194.9) - file size: 19.5 MB, startup RSS: 12.3 MB so, that's roughly 30% binary size increase and 50% greater startup memory usage in 2.5 years. =/

Pedantically, it's a framework but a very targeted one with its own runtime: https://github.com/just-js/just

Oh, come on! I am in fact a front end developer. And when I saw the result first time a few years ago, I was surprised and wanted to use this “just JS”, but the reality was quite far from what I was expecting. It might look like JS, but if you check the source code of the app for the benchmark, you’ll realise that it looks more like C or C++. More details in this thread: https://github.com/just-js/just/issues/5

Just-js is not really a Javascript: https://github.com/just-js/just. .Net in that list much closer to what everyone assumes.Net is.

...and the fastest server is javascript. https://github.com/just-js/just Not that you should choose it over node or bun.sh or deno. I look forward to seeing where bun.sh ends up on the chart. Currently (well, as of the last benchmark, in July) deno is 0.9%-1.6% of the speed of the fastest options, while faster node options are around 20-40%.

> I am stunned that a JS tool came out on top I wanted to know why, and I found this article by the author: https://just.billywhizz.io/blog/on-javascript-performance-01... also: https://github.com/just-js/just/issues/5#issuecomment-778673...

Absolutely. And it has been done already, JustJS[1] has made it to the top 10 fastest in the TechEmpower benchmarks. It’s Linux only though, and not nearly as complete or easy to use, which makes it unappealing for real world projects. [1] https://github.com/just-js/just

My moneys on Just-JS. It’s consistently in the top 5 fastest web framework (beating out Rust, etc). Just-JS is already faster than Bun. Additionally, JSCore appears to be a significant reason why Bun is faster than NodeJS (V8). Just-JS is investigating switching to JSCore as well - which will only extend its lead. https://github.com/just-js/just https://www.techempower.com/benchmarks/#section=data-r21 https://twitter.com/justjs14/status/1560741923106725889#m https://twitter.com/justjs14/status/1557856790897106944#m

TypeScript is actually pretty amazing, a lot of people strongly dislike it, but I think it gives a reasonable amount of safety for such a dynamic language, I would use it even if only for the autocompletion. It encourages a better (imo) style of programming than traditional JS that did all kinds of dark magic, like modifying the prototype chain. Sometimes I wonder what a world with strong ESM support, a slim runtime such as just [1], strong typing (like Rescript is trying to do), a unified format/lint toolchain and a solid standard library would like like, look how far Node.js has gotten despite its numerous flaws. [1]: https://github.com/just-js/just

Related :- https://github.com/just-js/just

just.js (#9) looks interesting https://github.com/just-js/just It seems to be a much tinier JavaScript runtime than Node.js (still using v8), but linux only The benchmark is probably unrealistically optimized code but even so, it implies Node.js itself has a large performance overhead