sizeEstimate
TypeScriptget sizeEstimate(): numberSwift declarationlet sizeEstimate: IntThe size estimate provided by the app extension.
struct · iOS 26.0+ · SDK 27.1
struct DeviceToDeviceExportPropertiesProperties that describe the result of a device-to-device export.
get sizeEstimate(): numberSwift declarationlet sizeEstimate: IntThe size estimate provided by the app extension.
get compressedBytes(): (number) | nullSwift declarationlet compressedBytes: Int?The number of compressed bytes written to the migration infrastructure, if the extension uses compression. Use this information in testing to determine if your extension might benefit from data compression during migration. If the extension doesn't use compression, this property is `nil`.
get uncompressedBytes(): numberSwift declarationlet uncompressedBytes: IntThe number of uncompressed bytes written to the exporter.
get version(): stringSwift declarationlet version: StringThe data version provided by the app extension.
No declarations were skipped in this snapshot.