W3cubDocs

/Dart 2

dart:indexed_db

oldVersion property

int oldVersion
@Creates('int|String|Null'), @Returns('int|String|Null'), final

Implementation 

final int oldVersion

© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-indexed_db/VersionChangeEvent/oldVersion.html