Wrong database used in transaction method (affects transactions and batch methods)

[JedrzejMajko]

All transactions & batch operations are being done on default database.
Selecting other db will affect cypherRead/Write, but not transaction nor batch() method.

Method transaction() contains following code:
var session = this.driver.session(database);
This is an invalid argument.

It should be:
var session = this.driver.session({ database: database, defaultAccessMode: mode });

You have example in method above transaction: writeSession()