:memory: Database is undefined

[amerdsp]

var sqlite3 = require('sqlite3').verbose();
var TransactionDatabase = require("sqlite3-transactions").TransactionDatabase;
var db = new TransactionDatabase( new sqlite3.Database(":memory:") );
db.run( ....

db is undefined...

However, if no TransactionDatabase is used, the above run statement would work...
I did place the run statement in a call back for the sqlite3 new database call and that seems to work..