What's the recommended way to use `lazy` in common code between JS and JVM? It seems to have a diffe...

# multiplatform

[martmists]

What's the recommended way to use lazy in common code between JS and JVM? It seems to have a different definition (though for JS the type reads as <ERROR CLASS> on the docs)

[Oleg Yukhnevich]

Hey, you can safely use lazy in common code
as far as I understand, you see <ERROR CLASS> here?
It's a bug with old Dokka used to generate stdlib API reference
You can open new API reference (the purple banner on top), and you will see, that it returns Lazy<T> on all platforms

[martmists]

When I use lazy I just get an unresolved reference unfortunately. The only defined sourcesets are JVM, Android and JS (IR)

[martmists]

fun test() {
    val x by lazy { // Unresolved reference 'lazy'
        1
    }
}

[martmists]

My gradle build file:

plugins {
    kotlin("multiplatform")
    kotlin("plugin.serialization")
    id("com.android.library")
}

repositories { ... }

kotlin {
    jvm("desktop")
    js(IR) {
        browser()
        binaries.library()
    }
    androidTarget()

    sourceSets {
        val commonMain by getting {
            // ...
        }

        val jvmMain by creating {
            dependsOn(commonMain)
        }

        val desktopMain by getting {
            dependsOn(jvmMain)
        }

        val androidMain by getting {
            dependsOn(jvmMain)
        }
    }
}

android {
    // ...
}

[martmists]

Using version 2.0.21 of the kotlin plugin if that matters, though able to reproduce on 2.0.0

[Oleg Yukhnevich]

can't reproduce at my side 😞

[martmists]

Looks like adding the following fixed it:

val jsMain by getting {
    dependsOn(commonMain)

    dependencies {
        api(kotlin("stdlib-js", Versions.kotlin))
    }
}

Strange that stdlib-js isn't automatically applied

[martmists]

Nope, the error is back:

[martmists]

@Oleg Yukhnevich is there a way I can send a zip of my project privately?

[martmists]

Finally figured it out; apparently there was a bad kotlin-stdlib being passed through mavenLocal