This is Rockstar, an esoteric programming language whose syntax is inspired by the lyrics to 80s hard rock and heavy metal songs.

Rockstar has three main components:
/Starship contains the Starship interpreter for Rockstar, built in C# and .NET/cm-lang-rockstar contains the CodeMirror editor used on the Rockstar website/codewithrockstar.com contains the Rockstar website, docs and examplesTo build the Starship engine, you'll need the .NET 9 SDK
git clone https://github.com/RockstarLang/rockstar.git
cd rockstar
dotnet workload install wasm-tools
dotnet build ./Starship/Starship.sln
dotnet test ./Starship/
To build a Rockstar native binary on Linux, you'll need gcc installed, and then:
git clone https://github.com/RockstarLang/rockstar.git
cd rockstar
dotnet publish ./Starship/Rockstar -o binaries -c Release
That'll create a standalone binary executable in binaries/rockstar.
The codewithrockstar.com website is built with Jekyll and hosted on GitHub Pages.
The embedded Rockstar interpreter is the Starship engine compiled to run on web assembly:
dotnet build ./Starship/Starship.sln
dotnet publish ./Starship/Rockstar.Wasm -o codewithrockstar.com/wasm/ -c Debug
Building codewithrockstar.com works like this:
build-rockstar-2.0 - runs on Linux - Builds the parser and interpreter - Runs the test suite - Uploads artifacts for: - Linux native binary - WASM interpreter for the website
build-windows-binary * builds the Rockstar windows binary
build-macos-binary * builds the macOS binary
release-rockstar-engine * creates the GitHub release from the latest binaries
build-and-deploy-website * Downloads the Rockstar WASM binary * builds the CodeMirror editor * Builds the Jekyll site * Deploys the site to GitHub Pages
In dev mode, I use symbolic directory links between the various parts of the project. Rebuilding the .NET solution will rebuild the WASM interpreter, which Jekyll can see as /wasm/**, and trigger a site rebuild, and all the Rockstar code examples are part of both the Rockstar.Test .NET test suite project and the codewithrockstar.com site:
> cd codewithrockstar.com
> mklink /d wasm ..\Starship\Rockstar.Wasm\bin\Debug\net8.0-browser
> mklink /d examples ..\Starship\Rockstar.Test\programs\examples
codewithrockstar.com
/wasm --> [ /Starship/Rockstar.Wasm/bin/Debug/net8.0-browser ]
/examples --> [ /Starship/Rockstar.Test/programs/examples ]
/index.html
/example.md
/js
/rockstar-editor.js (from codemirror)
$ claude mcp add rockstar \
-- python -m otcore.mcp_server <graph>