awesome-wasm-langs VS wasi-libc

Cross-language support for over 30 programming languages for eBPF user space programs

wot

Just about every language can compile or transpile to WASM:

https://github.com/appcypher/awesome-wasm-langs

There are also curated lists of languages that compile down to Wasm available on Github, so there is a ton of opportunity to choose your own adventure.

My current plans are to investigate TinyGo / C# NativeAOT-LLVM / other languages that can compile to Wasm once our host side stabilises a little bit (lots of churn right now!)

Yeah, it's pretty cool. Here's a nice list of all the repositories and stuff like that

It’s planned to use WASM, which would allow to use basically any language you’d want (ok, any lang having a WASM compiler or VM), including Lua.

While waiting for placement at Andela, I started something. I wanted to create a community of developers who had already worked on WebAssembly projects in the past. A bit of a back story is in order now. During my exploratory phase before I settled for web development, Web Assembly was announced. So on a whim, I created a Repo to keep track of languages that compile to web assembly. The repo ended up getting over three thousand stars. I honestly didn’t expect it to blow up as much as it did, but it did. That feat fueled my interest in Web Assembly. As I was saying, I wanted to gather Web Assembly developers together for a purpose - to create a common web assembly runtime, a canonical runtime. My attempt at community building didn’t go so well. I sent a couple of emails, and DMs to no avail, or so I thought. It was during this time that Syrus Akbary reached out to me, he pitched the idea he had to build an awesome web assembly runtime, Wasmer, and that he would want me to be involved. He was really excited, and so was I. The only thing was that he said he had to lay down some of the groundwork first. So he worked on it for about a month. Now that I think about it, I should have stuck to him while he laid down the work because when he showed me the progress he had made, I was awe-stricken, but also disadvantaged. A lot of work had been done. Here we were trying to build the web assembly runtime that would take the world by storm, but my knowledge of Rust was meager. Keeping up was hard. Eventually, I had to leave the project, he was incorporating Wasmer as a company, so relocation was being discussed but I wasn’t interested in going to the US. But I think the major deciding factor for me was that I didn’t really align with the management of the project.

Now there are projects like WASI that allows for interfacing with system resources for WASM code this allows for devs to target WASM runtime for their apps sliding the apps to run locally on any OS without any porting required. This could be a game changer in the future like Docker and containers was in the past decade.

So it doesn’t seem like there has been progress on a pseudo-random number generator function for typst, but there are multiple other ways to solve this: 1. Just don’t. Typst has this functional philosophy, there one input always produces the same output. (not an answer to your question tho) 2. Interface with a webassembly module which has a random number generator. So you could e.g. compile c to wasm and statically link a libc version. You would then just have to export the rand() function. (You could use any lang for this, which has a stdlib with a pseudo random number generator) 3. Implement your own. Random number generators are actually not that hard something like an LCG isn’t to complex. (Id provide an example but im on my phone rn)

Actually WASI[0] will be a better alternative, IIRC extism serialize and deserialize the data that you want to pass every time, adding a lot of overhead.

[0] https://wasi.dev

Actually, it was in wasi-libc: https://github.com/WebAssembly/wasi-libc/blob/main/libc-bott...

Proper isolation in C# is only now becoming a thing, with .Net support for WASI, which is essentially a WebAssembly sandbox which can be given extremely granular privileges (such as access to spefic file system directories, or an effective virtual file system). As an upside, the idea is that it should be possible to write the WASI packages in more or less anything.

Wasm Labs dev here :)

In mod_wasm, there are some differences with a pure CGI implementation. When Apache boots, it loads the configuration and initializes the WasmVM. When a new HTTP request arrives, the VM is ready so you don't need to initialize a different process to manage it.

You still need to process the request and pass the data to the Wasm module. This step is done via STDIN through the WebAssembly System Interface (WASI) implementation [0]. The same happens in the opposite direction, as the module returns the data via STDOUT.

So, the CGI pattern is still there, but it doesn't require new processes and all the code runs in a sandbox.

However this is not the only way you can run a Wasm module. In this specific case, we use CGI via WASI. In other cases, you may compile a module to fulfill a specific API, like ProxyWasm [1] to create HTTP filters for proxies like Envoy.

- [0] https://wasi.dev/

- [1] https://github.com/proxy-wasm/spec

Never done that, but I think you need this: https://wasi.dev/

The Python builds from the WebAssembly language runtimes [0] project target the WebAssembly System Interfaces (WASI) [1]. It allows the Python interpreter to interact with resources like the filesystem.

Many server-side Wasm runtimes supports WASI out of the box. For the browser, you need to provide a polyfill to emulate these resources like the one provided by the WASI team [2].

Regarding SQLite, these builds include libsqlite so you should be able to use it :)

- [0] https://github.com/vmware-labs/webassembly-language-runtimes

- [1] https://wasi.dev/

- [2] https://wasi.dev/polyfill/

Effective debugging results in effective programming; itk-wasm makes effective debugging of WebAssembly possible. In this tutorial, adapted from the itk-wasm documentation, we walk through how to debug a C++ data processing pipeline with the mature, native binary debugging tools that are comfortable for developers. This is a fully featured way to ensure the base correctness of a processing pipeline. Next, we will walk through an interactive debugging experience for WASI WebAssembly. With itk-wasm, we can debug the same source code in either context with an interactive debugger. We also have a convenvient way to pass data from our local filesystem into a WebAssembly (Wasm) processing pipeline.

Communication between the WASM module and the rest of the application needs to be done in very simple types (bytes, ints and floats). No complex types are supported yet. This is why most WASM compilers also provide some glue-code to map between complex types like strings or arrays. The Web Assembly System Interface (WAS) is an on-progress standard aimed to solve this last limitation; once it's mature it will allow easy interoperation with almost every environment. WASI is already available in some WSAM compilers and runtimes.