Rust + WebAssembly News

[fitzgen]

Leave comments here with

• new blog posts
• announcements of new tools/libraries
• new releases from libraries/tools
• anything notable in the rust+wasm world
• suggested rust+wasm quote of the $TIME_PERIOD
• suggested rust+wasm crate of the $TIME_PERIOD

I'll go through the comments on this issue periodically and turn them into "This Week in Rust+WASM" style posts.

[fitzgen]

https://github.com/bzar/webchat-rs

A doodle to create a mostly-rust client-server web app with a shared data model and binary communication over websocket between a server and WebAssembly client built using wasm-bindgen.

[est31]

@fitzgen can you, instead of deleting comments, make a new issue if you want to create a new rust+wasm post? Would be great :)

[fitzgen]

@fitzgen can you, instead of deleting comments, make a new issue if you want to create a new rust+wasm post? Would be great :)

Sure thing -- I found it annoying when others made new issues because it meant my browser history was no longer helpful, but if others prefer that it is fine by me.

Will start a new issue after the next newsletter.

[fitzgen]

https://hacks.mozilla.org/2018/04/sneak-peek-at-webassembly-studio/

[fitzgen]

The initial Game of Life tutorial for the book landed: https://rust-lang-nursery.github.io/rust-wasm/game-of-life/introduction.html

[fitzgen]

svelte renamed to twiggy, moved into the rustwasm org, and gained a mascot: https://github.com/rustwasm/twiggy

[fitzgen]

Writing an NES emulator with Rust and WebAssembly: https://medium.com/@bokuweb17/writing-an-nes-emulator-with-rust-and-webassembly-d64de101c49d

[fitzgen]

What will it take to run ggez on wasm? https://wiki.alopex.li/GgezOnWasm

[fitzgen]

twiggy can now analyze bloat from monomorphization of generic functions: https://github.com/rustwasm/twiggy/pull/40

This introduces the twiggy monos subcommand. It finds generic functions that have been monomorphized multiple times, computes the approximate bloat due to monomorphization that would in theory go away if switched to virtual calls, and displays this information.

[fitzgen]

Hello wasm-pack! https://hacks.mozilla.org/2018/04/hello-wasm-pack/

[fitzgen]

Twiggy integrated into wasm studio: https://twitter.com/fitzgen/status/987135974160265216

[fitzgen]

Small WebAssembly Binaries with Rust + Emscripten: https://kripken.github.io/blog/binaryen/2018/04/18/rust-emscripten.html

[fitzgen]

wasm-snip 0.1.1 released: https://crates.io/crates/wasm-snip/0.1.1

[fitzgen]

wee_alloc 0.3.0: https://github.com/rustwasm/wee_alloc/blob/master/CHANGELOG.md#030

• faster
• support for updated allocator APIs in the rust standard library

[fitzgen]

wasm-snip 0.1.3 https://github.com/fitzgen/wasm-snip

• support for snipping functions by regex
• support for automatically snipping all fmt code
• support for automatically snipping all panicking code

[fitzgen]

Everyone following this repo: please help me collect rust and wasm news by adding news about releases and big PRs and new projects, etc here!

Also, if you have any good first issues, help-wanted issues, easy issues, mentored issues, etc, link them here and we can add them to a "request for contributions" section in the newsletter.

Thanks!

[Pauan]

I added in Futures 0.2 support to stdweb.

For quite a while now it has been possible to easily use Rust Futures and JavaScript Promises (including a mixture of both) in stdweb. That PR updates the existing code to work with the changes in Futures 0.2

[fitzgen]

Request for library: slim web component library

https://github.com/rust-lang-nursery/rust-wasm/issues/162

[fitzgen]

Request for contributions: Design a tree-map visualization for twiggy in WebAssembly Studio

https://github.com/wasdk/WebAssemblyStudio/issues/163

[fitzgen]

Request for library: mpsc channels library built on top of the postMessage API

https://github.com/rust-lang-nursery/rust-wasm/issues/163

[fitzgen]

How does dynamic dispatch (trait objects) work in WebAssembly? http://fitzgeraldnick.com/2018/04/26/how-does-dynamic-dispatch-work-in-wasm.html

[ashleygwilliams]

wasm-pack 0.2.0 is out, https://twitter.com/ag_dubs/status/989699099053232129 (thanks all contributors) release notes: https://github.com/ashleygwilliams/wasm-pack/releases/tag/v0.2.0

[ashleygwilliams]

also lol i just realized based on the insights tab that a german media outlet wrote about wasm-pack: https://www.golem.de/news/wasm-pack-mozilla-packt-rust-software-fuer-npm-1804-133944.html

[alexcrichton]

I've published wbg-rand, a crate which enable default usage of the rand crate on the wasm32-unknown-unknown target (implemented with wasm-bindgen)

[fitzgen]

text adventure / fighting game made with rust and wasm:

https://ldjam.com/events/ludum-dare/41/text-em-up

[fitzgen]

Using LLVM from Rust, to generate WebAssembly

https://medium.com/@jayphelps/using-llvm-from-rust-to-generate-webassembly-93e8c193fdb4

[fitzgen]

Cervus implements a WebAssembly "usermode" on top of the Linux kernel, enabling wasm applications to run directly in ring 0, while still ensuring safety and security.

https://github.com/cervus-v/cervus

[ashleygwilliams]

we accepted 2 participants for the increasing rust's reach program to work with @mgattozzi - we might consider doing profiles of each at some point :)

[fitzgen]

we accepted 2 participants for the increasing rust's reach program to work with @mgattozzi

Awesome! Will they be doing rust+wasm stuff?

[mgattozzi]

@fitzgen yes! They'll be specifically working with me for rust + wasm stuff. I'll be following up with them about what they are interested in with the space later this week and I'll then be working with/mentoring them to land PRs for various things, whether it's documentation, tooling etc.