dep: upgrade pg-types to ^4

[aqeelat]

When this pr is merged, we can update @types/pg to not depend on @types/pg-types

[brianc]

pg-types @ 4.x is not backwards compatible, so it requires a major version bump (and a LOT of headache for library consumers)

[brianc]

I think there needs to be another fork or something of pg-types that does not do the date/time zone conversion differently. Unfortunately changing that would be insanely breaking for a lot of deployed code-bases even though the original decision 15 years ago wasn't the best....I'm not convinced its worth the forced upgrade there.

[aqeelat]

@brianc can you elaborate on what that means?

Also, does it make sense to use pg-types without node-postgres? If not, then why not move the source code for that library into this repo and tie their development together?

[aqeelat]

Oh I just came across brianc/node-pg-types#50 and the PRs related to it.
Should I convert this into a discussion?

[aqeelat]

From what I can gather:

1. the Date objects will now be parsed to the current timezone even if they do not have timezone in them (which is why the test is failing). To fix this test, we could retrieve the timezone of the db connection and then add the offset.
2. postgres DATEs will be returned as string

But yeah, this should be a major version bump