You need Java installed, sorry!
cd <ThingML> && mvn clean install && cd language && mvn clean install
cp ./thingml-ide/target/thingml.ide-2.0.0-SNAPSHOT-ls.jar <thingml-vscode>/server/./thingml-ide/target/thingml.ide-2.0.0-SNAPSHOT-ls.jar
npm i -g vsce
(only needed once, installed globally)vsce package
code --install-extension thingml-vscode-0.0.1.vsix
(or use VS Code GUI to install extension from.vsix
file)