Custom type handling does not work as documented

[JakobJingleheimer]

From the docs for Custom Types:

An array of pg_types oids to handle when parsing values coming from the db.
from : [1337],

The actual behaviour is to apply blindly to all (not just the ones in the array) types matching to.

This creates a problem when trying to work around postgres.js's lack of handling for js Date() (equivalent to TIMESTAMPZ) to a postgressql DATE field. Perhaps there is a better way to handle that, but there does not appear to be anything relevant in the README.