Hello! I have created a simple interface in Kotlin...

# javascript

[Sebastien Leclerc Lavallee]

Hello! I have created a simple interface in Kotlin that I want to export to typescript.

@JsExport
interface IAddress {
  var id: String
}

What is exported in the .d.ts file is this:

interface IAddress {
        id: string;
        readonly __doNotUseIt: __doNotImplementIt;
    }

There is the __doNotUseIt property that is added. How can I have this not added to the typed definition file.
I’m using Kotlin 1.6.20-M1

Thanks! 🙂

[turansky]

Just don’t use it! 🙂

[turansky]

@hfhbd Do you have such problems?

[Big Chungus]

You can get rid of it by making the interdace external

[hfhbd]

Yes, I do have the same type, but only at the top of the .d.ts file, not in my definitions.

declare const __doNotImplementIt: unique symbol
type __doNotImplementIt = typeof __doNotImplementIt

[hfhbd]

Ah, it only happens when you export a Kotlin interface. We don't export interfaces, only classes.

[Sebastien Leclerc Lavallee]

@turansky I can’t only “don’t use it” because when I want to create an object with that interface, I get an error.

const addr: shared.IAddress = {
      id: 'sdsds',
    }

Property '__doNotUseIt' is missing in type '{ id: string; }' but required in type 'IAddress'

And thanks @Big Chungus, making the interface external did fix my problem!