Sequelize connect to Postgres over Unix socket

Question

I would like to connect to Postgres using Sequelize over Unix socket (not over localhost).

Postgres is configured to accept Unix socket connections from user pgdba. All works from command line with psql. So the Pg side is correctly configured.

I can't seem to find Sequelize configuration though to support Unix sockets. Closest I could find was for mysql, which I've adapted for Pg, but doesn't seem to work:

var sequelizeConfig = {
    dialect: 'postgres',
    dialectOptions: {
        socketPath: '/home/pgdba/data/5432/.s.PGSQL.5432',
    }
    port: 5432
};
var sequelize = new Sequelize('fooDb', 'pgdba', 'passwd', sequelizeConfig);

The error I'm getting when starting the app:

Unable to connect to the database: +23ms { [SequelizeConnectionError: pg_hba.conf rejects connection for host "127.0.0.1", user "pgdba", database "fooDb"]
  name: 'SequelizeConnectionError',
  message: 'pg_hba.conf rejects connection for host "127.0.0.1", user "pgdba", database "fooDb"',...

Apparently sequelize is still trying to go over localhost instead of the Unix socket and the pg_hba.conf is correctly rejecting it, as is configured. Is there a way to configure Sequelize for Postgres and Unix socket?

Using Sequelize 3.14.2 on Node v5.1.0 and Postgresql 9.5.0beta2.