["BUG"] Optics and typealias usage in the same file fails with "Duplicate JVM class name"

[mmirboboev]

Hello arrow ⏫ team,

Recently I was playing around and trying to integrate arrow-optics into one of our kotlin projects with spring-boot, but stumbled upon an issue. When declaring a typealias in the same file where I have @optics annotation, build of the gradle application fails with Duplicated JVM name error.

Below is the example:

package com.example.arrow.optics

import arrow.optics.optics
import java.util.UUID

typealias OrderId = UUID

@optics
data class Order(val id: OrderId) {
    companion object
}

Error message:

Task :compileKotlin FAILED
e: /Users/mirboboev/playground/arrow.optics/build/generated/ksp/main/kotlin/com/example/arrow/optics/arrow/optics/Order.kt: (1, 1): Duplicate JVM class name 'com/example/arrow/optics/arrow/optics/OrderKt' generated from: OrderKt, OrderKt
e: /Users/mirboboev/playground/arrow.optics/src/main/kotlin/com/example/arrow/optics/arrow/optics/Order.kt: (1, 1): Duplicate JVM class name 'com/example/arrow/optics/arrow/optics/OrderKt' generated from: OrderKt, OrderKt

Possible solutions is to explicitly specify java class name in the beginning of the file like in the example below:

@file:JvmName("OrderJvm")

Thanks 🙏🏼

[thejeff77]

This gave me the tip I needed to fix a very similar issue! Thank you!

You also get this if you have extension functions for the sealed class - esp in the same file.

Eg:

@optics
data class Order(val id: OrderId) {
    companion object
}

Order.toSomeObject() = SomeObject.from(this)

Obviously you can put it in the class instead of using an extension function, but it might help to have this context when fixing this.