@kotlin-mui: I’m trying to make an extension funct...

# javascript

[Moritz Hofmeister]

@kotlin-mui: I’m trying to make an extension function to set the min attribute and cannot figure out how to do it correctly:

var InputBaseComponentProps.min: String
  get() = throw IllegalStateException()
  set(value) {
    return when (this) {
      is HTMLInputElement -> min = value
      else -> throw IllegalArgumentException("There is no min in this InputBaseComponentProps")
    }
  }

This results in an exception because it apparently does not match with HTMLInputElement.

As a reference, this works:

val HTMLElement.value: String
  get() = when (this) {
    is HTMLInputElement -> value
    is HTMLTextAreaElement -> value
    else -> throw IllegalArgumentException("There is no value in this HTMLElement")
  }

[turansky]

var InputBaseComponentProps.min: Double?
  get() = asDynamic().min
  set(value) {
    asDynamic().min = value
  }

[Moritz Hofmeister]

So there’s no way without asDynamic()

[turansky]

InputBaseComponentProps is simple JS object, like all typical props

[turansky]

Yes, because it’s JSO

[Moritz Hofmeister]

Ok, thanks 👍🏼

[turansky]

https://github.com/JetBrains/kotlin-wrappers/blob/master/kotlin-react-core/src/main/kotlin/react/Props.kt

[turansky]

key and ref are write-only, because they are reserved

[turansky]

Classic use case