Hi - I have an imported npm library whose API for ...

# webassembly

[danysantiago]

Hi - I have an imported npm library whose API for JavaScript is to create an object from a function located in another object, in JS it would be like this const myNewInstance = new library.ctorFunction(...).

How can I define this in Kotlin WASM with external? The closest I gotten to is:

external interface Library {
  fun ctorFunction(...): JsAny
}

But the glue created does not contain the new keyword, it is simply: 'org.dany.test.ctorFunction_$external_fun' : (_this, p0, p1, p2) => _this.ctorFunction(p0, p1, p2) and without the new the type check of the external function throws a NPE.

It seems the JavaScript glue will only emit a new keyword if its a Kotlin external class with a constructor, say @JsName("ctorFunction") external class LibInstance constructor(...) but now I have lost passing the JS object containing the constructor function. The glue code is simply new ctorFunction(...) where as I need new _this.ctorFunction(...) like if it was a member external function. Additionally external extension functions are not supported right now.

Any idea on how to do this? Thanks!

[Robert Jaros]

Perhaps try something similar to this with js() function:
https://pl.kotl.in/8EKPJYxpj

[danysantiago]

That worked! Thaaank you so much! I had no idea you could reference param via their names from js().