This is a submission for DEV's Summer Bug Smash: Clear the Lineup powered by Sentry . Both of these bugs were already known before I touched them. One had a linked issue and a fix that covered half the cases. The other had a unit test that asserted the crash, with a comment above it saying // Remove when fixed! . They also had the same shape. In both projects the correct behavior already existed elsewhere in the same file: a sibling transformer that handled the input, a sibling branch...