Repowise scores jackyzha0/quartz at 6.9 out of 10 for code health, which reads as fair, alongside maintainability 7.2 and static performance 9.5 on the same scale. There are 240 open findings across the three pillars, and the lowest-scoring file is gitLoader.ts at 2.0. Scores are computed from complexity, duplication, churn and git fix history, not from a linter.