def legacy.batches.mutation.count
import mylsm-lsm-store@0.6.0.1/src/transfer/Migrate.bend as Migrateimport Base
import mylsm-lsm-store@0.6.0.1/src/Wal.bend as Wal
184def legacy.batches.mutation.count(batches: List<&2, Wal.Batch>) -> Nat:
185 match batches:
186 case Nil{}: 0n
187 case Con{Wal.Batch{muts}, tail}:
188 Nat.add(legacy.mutations.count(muts),
189 legacy.batches.mutation.count(tail))