Assuming I have several functions that return the same number | Date type is it possible to define a type that will be one of these two?
I.e. instead of:
foo1(): number | Date {}
foo2(): number | Date {}
is it possible to have:
foo1(): NumberOrDate {}
foo2(): NumberOrDate {}
?
Or is there any other idea on how to stay DRY and not repeat number | Date?
>Solution :
You can just declare a type alias for the union:
type NumberOrDate = number | Date
function foo1(): NumberOrDate { return 1;}
function foo2(): NumberOrDate { return new Date}