fengari
design
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fengari | design | |
---|---|---|
24 | 32 | |
1,765 | 11,344 | |
1.4% | 0.2% | |
0.0 | 3.9 | |
12 months ago | 3 days ago | |
JavaScript | ||
MIT License | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
fengari
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Lua: The Little Language That Could
it should be possible, the article mentions https://fengari.io/ (a Lua VM written in JavaScript)
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OmG jAVaScRiPt InSeCuRe. LuA bETtEr.
Check out Fengari or Lapis. Fun fact: itch.io is written primarily in Lua, and started by the same person who made Lapis and MoonScript.
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Lua is the fourth-fastest growing language on GitHub
I was real excited to see these recently... have you tried any? https://fengari.io/ is the one I was most intrigued by.
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How to embed lua in a JS webapp?
Hello, there is also fengari: https://fengari.io/
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PyScript
Other languages have done that :)
Lua in the browser: https://fengari.io/
And then you can use that to run Fennel, a Lisp that compiles to Lua https://fennel-lang.org/
I think TypeScript also has a script you can include that lets you put your TS code in a special script tag, and it gets compiled in-browser.
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Intro to PyScript: Run Python in your web browser
just use lua, it’s what should have been used for web scripting anyways
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Upcoming interview with Roberto Ierusalimschy
Please stop this stuck in the mud nonsense. Anyone stumbling upon lua.org might think the project is dead already. The material is great, close to the best, but its presentation is pure shite. Not mobile friendly (what kinds of device do you think the majority of people in the Global South use?). We live in a world of code highlighting, none of that in PiL. We live in a world where Fengari allows Lua to run in the browser, does that make an appearance on lua.org, allowing users to immediately play with the language? Of course not! It's almost as if the Lua team is trying to push away potential users.
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A First Look at PyScript: Python in the Web Browser – Real Python
why not use lua
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I really like to think of PyScript as the “Minecraft of software development”
Just use lua https://fengari.io/
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What can I create with Lua?
Definitely the most surprising use-case for Lua that I've seen is http://lua.space/webdev/why-we-rewrote-lua-in-js which discusses https://fengari.io/.
design
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Reaching and surpassing the limits of JavaScript BigData with WebAssembly
With WebAssembly we can compile our C++ codebase into a wasm module for the browser. So when you look at a SciChart.js chart you're actually seeing our C++ graphics engine wrapped for JavaScript.
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WASM Instructions
I should add, however, that the unmentioned elephant in the room is V8 JIT (TurboFan), which simply doesn't handle irreducible control flow. While there are some valid theoretical arguments around the current arrangement in Wasm, looking at the history of the associated discussions makes it pretty obvious that having V8 support Wasm and generate fast code similar to what it can do for asm.js was an overriding concern in many cases. And Google straight up said that if Wasm has ICF, they will not bother supporting such cases, so it will be done by a much slower fallback:
https://github.com/WebAssembly/design/issues/796#issuecommen...
AFAIK no other Wasm implementation has the same constraint - the rest generally tend to desugar everything to jumps and then proceed from there. So this is, at least to some extent, yet another case of a large company effectively forcing an open standard to be more convenient for them specifically.
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Supercharge Web AI Model Testing: WebGPU, WebGL, and Headless Chrome
https://github.com/WebAssembly/design/issues/1397
> Currently allocating more than ~300MB of memory is not reliable on Chrome on Android without resorting to Chrome-specific workarounds, nor in Safari on iOS.
That's about allocating CPU memory but the GPU memory situation is similar.
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Build your own WebAssembly Compiler
As far as I can tell (5 minutes of internet research) this was to allow easier compilation to JavaScript as a fallback in the days when WASM wasn't widely supported.
"Please add goto" issue has been open since 2016:
https://github.com/WebAssembly/design/issues/796
Most interesting comment:
> The upcoming Go 1.11 release will have experimental support for WebAssembly. This will include full support for all of Go's features, including goroutines, channels, etc. However, the performance of the generated WebAssembly is currently not that good.
> This is mainly because of the missing goto instruction. Without the goto instruction we had to resort to using a toplevel loop and jump table in every function. Using the relooper algorithm is not an option for us, because when switching between goroutines we need to be able to resume execution at different points of a function. The relooper can not help with this, only a goto instruction can.
> It is awesome that WebAssembly got to the point where it can support a language like Go. But to be truly the assembly of the web, WebAssembly should be equally powerful as other assembly languages. Go has an advanced compiler which is able to emit very efficient assembly for a number of other platforms. This is why I would like to argue that it is mainly a limitation of WebAssembly and not of the Go compiler that it is not possible to also use this compiler to emit efficient assembly for the web.
^ https://github.com/WebAssembly/design/issues/796#issuecommen...
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Flawless – Durable execution engine for Rust
When I implemented a WASM compiler, the only source of float-based non-determinism I found was in the exact byte representation of NaN. Floating point math is deterministic. See https://webassembly.org/docs/faq/#why-is-there-no-fast-math-... and https://github.com/WebAssembly/design/blob/main/Nondetermini....
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Requiem for a Stringref
> To work with GC, you need some way to track if the GC'd object is accessible in WASM itself.
I've never heard of a GC with that kind of API. Usually any native code that holds a GC reference would either mark that reference as a root explicitly (eg. https://github.com/WebAssembly/design/issues/1459) or ensure that it can be traced from a parent object. Either way, this should prevent collection of the object. I agree that explicitly checking whether a GC'd object has been freed would not make any sense.
> The reason why you probably need a custom string type is so you can actually embed string literals without relying on interop with the environment.
WASM already has ways of embedding flat string data. This can be materialized into GC/heap objects at module startup. This must happen in some form anyway, as all GC-able objects must be registered with the GC upon creation, for them to be discoverable as candidates for collection.
Overall I still don't understand the issue. There is so much prior art for these patterns in native extensions for Python, PHP, Ruby, etc.
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The Tug-of-War over Server-Side WebAssembly
Giving you a buffer that grows is the allocation approach I am talking about. This is not how your OS works. Your OS itself works with an allocator that does a pretty good job making sure that your memory ends up not fragmented. Because WASM is in between, the OS is not in control of the memory, and instead the browser is. The browser implementation of "bring your own allocator" is cute but realistically just a waste of time for everybody who wants to deploy a wasm app because whatever allocator you bring is crippled by the overarching allocator of the browser messing everything up.
It seems like the vendors are recognizing this though, with firefox now having a discard function aparently!
https://github.com/WebAssembly/design/issues/1397
- How do Rust WebAssembly apps free unused memory?
- Hello World In Web Assembly
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Bun v0.5
Scientific performance critical code isn't written in Python, it is written in C/C++ which is used by Python. Python in ML usually merely describes the calculation not unlike React describes the DOM that should be displayed in the browser.
JavaScript was never really known for admin or file manipulation (Perl replacement), so that was what probably established the dominant ecosystem for Python. I also don't think the runtime overhead is applicable due to native C/C++ part, and download time doesn't have to be bad since modules can be split just like in JavaScript ecosystem today. For an AI app, the model inference weights might be larger than the compiled WASM code itself. However, I'd agree with you that porting legacy apps might not be possible without something close to a rewrite.
There is a reasonable chance that once WASM GC is implemented, then direct DOM access will be provided [1], which I believe could pretty much halt interest in new JavaScript development for web frameworks overnight. WASM is the reincarnation of the Java Applet, but better. And a more typed language like Go or Dart could become the most widely used programming language. Either compile it to WASM as plugin for something like the browser, compile to JavaScript for "legacy browsers", or to native code for a standalone app. There are probably a handful of developers already assuming this and trying to write a version of React running in WASM already.
[1] https://github.com/WebAssembly/design/blob/main/Web.md#gc
What are some alternatives?
pypyjs - PyPy compiled to JavaScript
content - The content behind MDN Web Docs
pyodide - Pyodide is a Python distribution for the browser and Node.js based on WebAssembly
wave - Realtime Web Apps and Dashboards for Python and R
emscripten - Emscripten: An LLVM-to-WebAssembly Compiler
interface-types
lunatic - Lunatic is an Erlang-inspired runtime for WebAssembly
Chevrotain - Parser Building Toolkit for JavaScript
wasm-libxml2 - A quick experiment to build and run libxml2 as a WebAssembly module.
WASI - WebAssembly System Interface
lua-cmake - Embed lua with CMake
iswasmfast - Performance comparison of WebAssembly, C++ Addon, and native implementations of various algorithms in Node.js.