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Showing content from https://github.com/sheck/ruby.wasm below:

sheck/ruby.wasm: ruby.wasm is a collection of WebAssembly ports of the CRuby.

ruby.wasm is a collection of WebAssembly ports of the CRuby. It enables running Ruby application on browsers, WASI compatible WebAssembly runtimes, and Edge Computing platforms.

Try ruby.wasm (no installation needed)

Try ruby.wasm in TryRuby in your browser.

Quick Example: Ruby on browser

Create and save index.html page with the following contents:

<html>
  <script src="https://cdn.jsdelivr.net/npm/@ruby/3.2-wasm-wasi@2.3.0/dist/browser.script.iife.js"></script>
  <script type="text/ruby">
    require "js"

    puts RUBY_VERSION # => Hello, world! (printed to the browser console)
    JS.global[:document].write "Hello, world!"
  </script>
</html>
Quick Example: How to package your Ruby application as a WASI application

Dependencies: wasi-vfs, wasmtime

# Download a prebuilt Ruby release
$ curl -LO https://github.com/ruby/ruby.wasm/releases/latest/download/ruby-3.2-wasm32-unknown-wasi-full.tar.gz
$ tar xfz ruby-3.2-wasm32-unknown-wasi-full.tar.gz

# Extract ruby binary not to pack itself
$ mv 3.2-wasm32-unknown-wasi-full/usr/local/bin/ruby ruby.wasm

# Put your app code
$ mkdir src
$ echo "puts 'Hello'" > src/my_app.rb

# Pack the whole directory under /usr and your app dir
$ wasi-vfs pack ruby.wasm --mapdir /src::./src --mapdir /usr::./3.2-wasm32-unknown-wasi-full/usr -o my-ruby-app.wasm

# Run the packed scripts
$ wasmtime my-ruby-app.wasm -- /src/my_app.rb
Hello
npm packages (for JavaScript host environments)

See the README.md of each package for more detail and its usage.

This project distributes prebuilt Ruby binaries in GitHub Releases. A build is a combination of ruby version, profile, and target.

Triple Description wasm32-unknown-wasi Targeting WASI-compatible environments (e.g. Node.js, browsers with polyfill, wasmtime, and so on) wasm32-unknown-emscripten Targeting JavaScript environments including Node.js and browsers Profile Description minimal No standard extension libraries (like json, yaml, or stringio) full All standard extension libraries *-js Enabled JS interoperability, only usable with npm package *-debug With DWARF info and name section for debugging

The current WASI target build does not yet support Thread related APIs. Specifically, WASI does not yet have an API for creating and managing threads yet.

Also there is no support for networking. It is one of the goal of WASI to support networking in the future, but it is not yet implemented.

See CONTRIBUTING.md for how to build and test, and how to contribute to this project. Bug reports and pull requests are welcome on GitHub at https://github.com/ruby/ruby.wasm

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