Why does Jest –runInBand speed up tests?
Reading your linked page and some other related sources (like this github issue) some users have found that: …using the –runInBand helps in an environment with limited resources. and … –runInBand took our tests from >1.5 hours (actually I don’t know how long because Jenkins timed out at 1.5 hours) to around 4 minutes. (Note: … Read more