how do I map a structured type to an anonymous obj...

# javascript

[jw]

how do I map a structured type to an anonymous object?

[bashor]

kotlin object expression doesn’t work for you?

[bashor]

val alarmInfo = object {
  val whenMillis = 0.0
  val delayInMinutes = 0.0
  val periodInMinutes = 0.0
}

[jw]

I'm mapping a native API and wanted a proper type for the method parameter type

[jw]

Using a real class and not worrying about an anonymous object is probably the right thing here

[bashor]

Well, I think using external declarations is the best way to map native API.

[bashor]

Mangling isn't applied to external declarations

[bashor]

Anyway, you can use JsName to get proper name

[jw]

The external API doesn't have an object which corresponds to this parameter. It just documents it as "an object with keys named a, b, c". So I wanted a way to represent that as a proper class with constructor and val properties in Kotlin code but have it turn into a {a:.., b:.., c:..} declaration on the JS side

[jw]

It's this API: https://developer.chrome.com/apps/alarms#method-create

[bashor]

So, it can be external interface

[bashor]

external interface exists only on compile time

[jw]

that's what I ended up doing, but the caller still has to create an instance somehow. I used a factory function whose name matched the interface type name to act like a constructor, but it's basically pure boilerplate: https://kotlinlang.slack.com/archives/C0B8L3U69/p1515166470000015

[bashor]

Yes, we going to improve it, see https://youtrack.jetbrains.com/issue/KT-21653

[jw]

Looking forward to it. Thanks!