The types types/db.ts can give one value of a column. Int8, Numeric, Timestamp (a DateTime or CalendarDate), Json, Interval, Point and Circle are declared in that file; Date and Buffer are JavaScript's.
types/db.ts
Int8
Numeric
Timestamp
DateTime
CalendarDate
Json
Interval
Point
Circle
Date
Buffer
The types
types/db.tscan give one value of a column.Int8,Numeric,Timestamp(aDateTimeorCalendarDate),Json,Interval,PointandCircleare declared in that file;DateandBufferare JavaScript's.