Cannot resolve type 'Boolean'

Former Member
Former Member

I have a unit tests:

(:test)
function getBattChangeInPercentTest(logger as Logger) as Boolean {

when I try to compile it with strict typing `-l 3` the compiler tells me

`Cannot resolve type 'Boolean'.`

but that is what the docs tell me to do https://developer.garmin.com/connect-iq/core-topics/unit-testing/

What do I miss?