are there specific cases where you should use one of the other?
#still a bit confused by the difference between `interface` and `type`
warm hound
hazy raven
Afaik, interface is extend-able, but type is not. And interface is sort of made for "object", but for type you can do string and number more. Apart from these subtle difference, i think the two can still be used interchangabily 🤔
warm hound
feels to me like they could've just made just one keyword to do it all? idk
hazy raven
ts documentation sort of explains it a bit. See if it can ans ur problem.
oblique fog
thanks
Yes, you are right, minus a few edge cases, type is just a more powerful interface. My guess is if they could start from scratch, it'd be just one keyword.
warm hound
Yes, you are right, minus a few edge cases, `type` is just a more powerful inter...
oh oops, i'd have guessed interfaces were more powerful
because of inheritance
oblique fog
It's just a weird form of intersection
warm hound
yeah i didn't actually know about the & operator until today haha
oblique fog
The only thing interfaces can do fundamentally that types can't is use a this type. If support were added for types I wouldn't use interfaces for anything
warm hound
do you think they would ever add that in?
oblique fog
I couldn't find any issues on GitHub proposing it, though there must be one somewhere. I'd guess probably not.
ArkType allows it 😊
warm hound
what's arktype?
oblique fog
It's a runtime validation library I'm working on that mirrors TypeScript's syntax (with some extensions) https://github.com/arktypeio/arktype
hazy raven
The only thing interfaces can do fundamentally that types can't is use a `this` ...
This is not pure typescript. The keyword this can not be used to correlate properties within an object type.
oblique fog
This is not pure typescript. The keyword this can not be used to correlate prope...
Sorry what isn't pure typescript? I know this is not available in types, you can use it to reference other properties in an interface though