ruby-syntax-tree.github.io

A lot of good tools exist in the Ruby ecosystem that allow you to run some version of Ruby in the browser. I’m talking about tools like try.ruby-lang.org, runruby.io, and sorbet.run.Usually getting Ruby to run in the browser entails using emscripten to compile C to WebAssembly or using Opal to compile Ruby to JavaScript. Recently, however, the Ruby Association funded a project to compile Ruby to WebAssembly using the WASI ABI. Using this new functionality, you can compile Ruby itself or a Ruby application into a .wasm file that you can execute natively in the browser or through a polyfill. (You can actually execute it on any WebAssembly runtime, but for my purposes the browser will do.) For more information on the WASI Ruby project, check out the final report.