News for hackers. Stuff that matters.

A comment on Tricks I wish I knew when I learned TypeScript. Parent comment

Re:Tricks I wish I knew when I learned TypeScript by conaclos on Tuesday October 12, 2021 @07:55AM (#28838644)
In my knowledge, there are some differences:

- in error reporting: type aliases may be replaced by their definition in error reporting.

- you cannot create union types with interfaces

- legacy versions of TypeScript does not enable to create recursive type aliases such as type `List<V> = {v: V, right: List<V> | undefined }`

- interfaces with same name are merged

However the frontier between type aliases and interfaces seems more and more blur. Generally interfaces are encouraged over type aliases. I personally prefer type aliases because there are more capable and seems more elegant to me. However their poor support in error reporting makes me rely more on interfaces when possible.

[ Parent | on HN ]
Re:Tricks I wish I knew when I learned TypeScript by arenaninja on Tuesday October 12, 2021 @10:38AM (#28840244)
Yes the error reporting is why I prefer interfaces over types since a long time now. The definition is useless in many cases
[ Parent | on HN ]