npm install
npx tsc
NOTE: this will also watch the directory for changes and recompile automatically, so you may want to run it as a background job
command palette > Run Build Task (ctrl + shift + B)
NOTE: this will also watch the directory for changes and recompile automatically, so you do not need to run it again unless you kill/cancel it
node output/sandbox.js
command palette > Debug: Start Debugging (F5)