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kotlinlang

In an mpp, I am serializing to and from JSON, but using a map internally. I have been having trouble on the deserialization end in JS, but solved most of it with a custom objectToMap function that could populate a map from the JSON object in javascript. *But*. Lists go into JSON with an array-like notation and are re-read as arrays. From there, I need to get them back into kotlin lists. Could anyone help me get it right? Here's my last attempt (which doesn't work, since toList() isn't a function in js:

Kotlin arrays are javascript arrays, so just check if `value is Array&lt;*&gt;` and then call `value.toList()`

You mean by first casting the dynamic type `obj[key]` to an array? Yes, that might work. I'll check.

If you do an `is` check it should smartcast for you

Yes, it should, but it doesn't. Maybe because I'm dealing with a dynamic type object.

Your example code does not work, since `obj[key]` has a dynamic type, so the function call is translated to javascript as-is. But `toList` is an extension function, so it needs special handling at compile time, which only works if the type is known

Yes. But explicitly casting to an array seems to work, so thanks!