The kotlin functions 'println' do not work, because it thinks it is on node.js. I assume that is somehow due to the locally running app. My solution so far is to use console.log instead.
The gradle browserTest task will not run because it cannot find the obsidian library. Even if the classes under test do not need the library.
A solution: If the tests do not require Obsidian, one can just copy the required files to a second project and test just fine.