I’m sure the debugger as we se it wont come out soon, guys at Figma might already thinking about it but as a One-for-All super-mega game changing solutions with blows and whistles.
So for now the trick is making a debugger by hand from some text blocks and assigning the variables you are playing with in your prototype. And som boolean components too, like a test panel with lights. Sounds time consuming, but you will save on debugging sessions later