Resolve the ordered steps that carry version forward to targetVersion.
Exported because a host needs to answer "can this store still be read?"
without opening it, and because the unreachable case — a ladder whose chain
dead-ends before the target — has to be provable rather than assumed. The
walk is bounded and cycle-safe: at most MAX_SCHEMA_MIGRATION_STEPS
steps, and no version is visited twice.
Resolve the ordered steps that carry
versionforward totargetVersion.Exported because a host needs to answer "can this store still be read?" without opening it, and because the unreachable case — a ladder whose chain dead-ends before the target — has to be provable rather than assumed. The walk is bounded and cycle-safe: at most MAX_SCHEMA_MIGRATION_STEPS steps, and no version is visited twice.