Custom attribute metatypes
"Attribute metatype" is the Type-R attribute type descriptor with metadata attached.
Metatype is created by assigning the result of type( T ) expression to some variable.
The following attribute types are available from @type-r/ext-types package.
attribute : MicrosoftDate
Date attribute represented in JSON as Microsoft date (represented in JSON as string /Date(timestamp))
attribute : Timestamp
Date attribute represented in JSON as UNIX timestamp (the result of date.getTime()).
attribute : Integer
Number attribute converting value to integer on assignment. Can be called as function.
attribute : Email
String attribute with email validation check.
attribute : IPAddress
String attribute with IP address validation check.
attribute : Url
String attribute with URL validation check.