snapshotNameFor function
The seeder name for a snapshot file at path:
snapshots/Pro-User.json becomes pro_user.
Implementation
String snapshotNameFor(String path) {
final String base = path.split(RegExp(r'[\\/]')).last;
final int dot = base.lastIndexOf('.');
final String stem = dot >= 0 ? base.substring(0, dot) : base;
return seederNameFrom(stem) ?? 'snapshot';
}