Garbage collector cleans up js imports too early

In the attached project that should compile and run successfully, the issue happens in logic.js:10 where answerToLife fails to return 42 because Constants is null. The rest of the project is boilerplate to make it compile and run and trigger the bug.

Looking at logic.js:1 you see

.import "constants.js" as Constants

and it's not obvious why Constants would be null.
The actual output is

qml: TempScreen created
qml: Answerer created
qml: TempScreen destroyed
qml: Answerer trying to get answer, but Constants is null so I get
qrc:/logic.js:10: TypeError: Cannot read property 'answer' of null

The expected output would for the last line to print

The answer to life is 42

instead.

The apparent reason is that main.qml:13 destroys tempScreen which cleans up Constants.js prematurely, even though var logic in main.qml:5 still relies on it.