2 people are the primary owner of at least one file in phase3dev/advanced-sitemap-parser, and daddiofaddio owns the most: 1 file, or 50% of the codebase. The truck factor is 2: that is how few people would have to leave before the majority of owned files lose their owner. 1 file has exactly one contributor.
Engineering-leader view of who owns what: silos, hotspots, dead code, and bus-factor risk by person.
