kalender-events VS fullcalendar-workspace

There's a NR module that isn't supported anymore that I want to use (https://github.com/naimo84/kalender-events). The issue is that it has a terrible memory leak that is crashing Home Assistant daily. I'd like to find and fix the memory leak myself, but I have no idea how to debug a NR module. Is there a guide or something that can all me to get a dev environment setup so that I can start contributing?

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