I pulled in jQuery using ts2kt. It generated an in...

# javascript

[zsmb]

I pulled in jQuery using ts2kt. It generated an interface like this:

external interface JQueryPromiseCallback<T> {
    @nativeInvoke
    operator fun invoke(value: T? = definedExternally, vararg args: Any)
}

I need an instance of this as a function parameter, I tried creating one like this:

object: JQueryPromiseCallback<Any> {
    override fun invoke(value: Any?, vararg args: Any) {

    }
})

However, I'm getting an error on the invoke function:

Overriding 'external' function with optional parameters

The @nativeInvoke annotation is also deprecated, and gives me a deprecation message that I can't figure out:

Use inline extension function with body using dynamic

Am I supposed to correct the file that ts2kt generated? If so, how?

[gbaldeck]

Not sure if I'm interpreting what you need correctly, but a type alias might be what you need

[gbaldeck]

typealias JQueryPromiseCallback<T> = (T?, dynamic) -> dynamic

[bashor]

@zsmb: @gbaldeck is right — best way is to replace the interface with Kotlin’s function literal type, but the another problem is that we can’t correctly (in general) map it to Kotlin’s function literal type.

[zsmb]

Thanks, I ended up writing my own function instead of the generated one that I was trying to call, and made it take a functional type instead of an interface. It works perfectly.

[zsmb]

I suppose it would be worth writing a jQuery header manually that takes nicer types than the generated one. I don't know if this exists already, but I didn't manage to find one. I might just get on it myself.

[bashor]

Related issues:
https://youtrack.jetbrains.com/issue/KT-16319
https://github.com/Kotlin/ts2kt/issues/55
https://github.com/Kotlin/ts2kt/issues/56

[bashor]

I might just get on it myself.

You can do it base on converted code. Any way feel free to ask any question.

[bashor]

We going to create repository with such manually edited/written declarations, so, it could be your contribution to it 😉

[zsmb]

That sounds great, is there a way to get notified? Should I just check on this channel to hear about it?

[bashor]

I’ve created the issue about it https://youtrack.jetbrains.com/issue/KT-19488