npm install --save-dev @vscode/vsce
npx @vscode/vsce package
# This will create a .vsix file, which you can install in VS Code:
code --install-extension lpj-ins-0.0.1.vsix # Adjust filename as needed
Notes
This is a syntax grammar only (no validation/linting).
If needed, additional keyword classes can be added in
syntaxes/lpj-ins.tmLanguage.json.