Kotlin JS InterOp External doesn’t work I added b...

# javascript

[Ran]

Kotlin JS InterOp External doesn’t work

I added big-number dependency for jsMain:

val jsMain by getting {
    dependencies {
        implementation(npm("big-number", "2.0.0", true))
    }
}

In jsMain, I use external to tell compiler that the BigNumber class is implemented by js:

external class BigNumber(raw: dynamic) {
    fun plus(number: BigNumber): BigNumber
}

The I use BigNumber in kotlin code, but i get this error:

ReferenceError: BigNumber is not defined

Is there anyone can give me a help, thanks so much.

[Grégory Lureau]

Do you have the same packageName/namespace in JS and Kotlin?

[Ran]

No, I defined the external class under package com.calculation.tools

[Big Chungus]

https://dev.to/mpetuska/js-in-kotlinjs-c4g

[Big Chungus]

external declarations depend on how JS/TS code is exported.

[Ran]

Ok, I’ll read the doc you provided throughly, thanks so much

[Ran]

Thanks, I solved my problem.

[Big Chungus]

Glad to hear that. Mind posting back here what was the root cause and the solution in case somebody else encounters it in the future?