When using aliased intersection types, intellisense shows the constituent types and not the alias name

[alshdavid]

TypeScript Version: 3.7 && playground
Search Terms:
intersection type alias

Code
When using a intersection type with an alias, you expect the intellisense label to show the name of the alias, not the constituent types.

In the following example, I would expect to see the label as "C", however TypeScript reports the type label as "A & B"

However, when using interfaces which extend multiple interfaces, you see the interface name:

Expected behavior:
Type alias intellisense should function the same as interface intellisense

Playground Link:

Intersection types with type alias

Interfaces

[MartinJohns]

Relevant / duplicate (?): #34556

[jcalz]

Please note that you're talking about intersection types (&) and not union types (|).

[alshdavid]

Thanks for the heads up, I have updated the ticket accordingly

[RyanCavanaugh]

This is the intended behavior. When you over over C you see C's definition; saying "C is C" is not a useful hover. Interfaces don't have a useful right-hand-side thing to show here, so interface C is sort of the best we can do.

When you invoke foo, you see the alias as expected, which is the place where it is useful:

[typescript-bot]

This issue has been marked 'Working as Intended' and has seen no recent activity. It has been automatically closed for house-keeping purposes.