Hey All I have Been Struggling Fo Creating An Exte...

# javascript

[Shabinder Singh]

Hey All I have Been Struggling Fo Creating An External Class for using this : https://github.com/egoroof/browser-id3-writer library in my Kotlin/JS Project But i cant get to create an object of this class as it expects new keyword.

Any Help is Appreciated as I couldnt get it to work even after few hours of trying...

whenever I try to Instantiate ID3Writer , at runtime it crashes giving error: ID3Writer is not a constructor

[turansky]

Do you use IR compiler?

[Shabinder Singh]

Nope , using LEGACY , i figured IR is having Issues with default defination , while researching for finding solution

[turansky]

Could you use CommonJS format for Kotlin/JS?

[turansky]

kotlin.js {
    useCommonJS()
}

@JsNonModule can be removed in this case

[Robert Jaros]

You could try using plain require instead of `@JsModule`:

val writer: ID3Writer = require("browser-id3-writer").default(buffer)

[Shabinder Singh]

@turansky I added useCommonJs() and tried but got same error and when I tried removing @JsNonModule it throwed that this declartion be coming from JsNonModule for UMD, btw I am compiling Js for Browser .

My gradle script snippet is also shown below:

[Shabinder Singh]

@robstoll I tried your method too and it gave me :

__webpack_require__(...).default is not a function

[Robert Jaros]

This works fine for me:

@JsModule("browser-id3-writer")
@JsNonModule
external class ID3Writer(a: ArrayBuffer) {
    fun getBlob(): Blob
    // ...
}

        val writer = ID3Writer(ArrayBuffer(10))
        val blob = writer.getBlob()
        console.log(blob)

[Shabinder Singh]

@robstoll on Legacy Compiler ?

[Robert Jaros]

on both legacy and ir

[Robert Jaros]

btw, I'm not @robstoll :-)

[Shabinder Singh]

oopsss.... , let me invalidate cache and restart... I hope it works.

Anyway I appreciate your help,Thanks man.

[Shabinder Singh]

got it working , I dont know wh it didnt worked when I tried same , maybe cache /etc issue....

[turansky]

With UMD?

[Shabinder Singh]

yup