provide default values so list.sort does not fail #2323

All 226 tests pass in 57s

226 tests ±0 226 ✔️ +1 57s ⏱️ -1s
  44 suites ±0     0 💤 ±0
    1 files ±0     0 ❌ - 1

Results for commit 72bfe6b. ± Comparison against earlier commit 6ab1a0e.