Simplify set up of the resources variant in js and native targets

^KT-65540

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/resources/publication/KotlinTargetVariantResourcesPublication.kt

@@ -9,7 +9,9 @@ import org.gradle.api.file.DuplicatesStrategy
 import org.gradle.api.tasks.bundling.Zip
 import org.jetbrains.kotlin.gradle.dsl.KotlinMultiplatformExtension
 import org.jetbrains.kotlin.gradle.dsl.multiplatformExtension
+import org.jetbrains.kotlin.gradle.dsl.multiplatformExtensionOrNull
 import org.jetbrains.kotlin.gradle.plugin.KotlinCompilation
+import org.jetbrains.kotlin.gradle.plugin.PropertiesProvider.Companion.kotlinPropertiesProvider
 import org.jetbrains.kotlin.gradle.plugin.launch
 import org.jetbrains.kotlin.gradle.plugin.mpp.AbstractKotlinTarget
 import org.jetbrains.kotlin.gradle.plugin.mpp.DefaultKotlinUsageContext
@@ -23,10 +25,11 @@ import org.jetbrains.kotlin.gradle.tasks.registerTask
 
 // Use KotlinMultiplatformExtension to make sure this usage context is only creatable in MPP
 @Suppress("UnusedReceiverParameter")
-internal fun KotlinMultiplatformExtension.setUpResourcesVariant(
-    target: AbstractKotlinTarget,
+internal fun AbstractKotlinTarget.setUpResourcesVariant(
     compilation: KotlinCompilation<*>,
-): DefaultKotlinUsageContext = with(target) {
+): DefaultKotlinUsageContext? {
+    if (project.multiplatformExtensionOrNull == null || !project.kotlinPropertiesProvider.mppResourcesPublication) return null
+
     var targetRegistersResourcesForPublication = false
     val resourcesVariant = DefaultKotlinUsageContext(
         compilation = compilation,

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinJsIrTarget.kt

@@ -89,16 +89,11 @@ constructor(
             )
         )
 
-        if (project.kotlinPropertiesProvider.mppResourcesPublication) {
-            project.multiplatformExtensionOrNull?.let {
-                usageContexts.add(
-                    it.setUpResourcesVariant(
-                        this,
-                        mainCompilation
-                    )
-                )
-            }
-        }
+        usageContexts.addIfNotNull(
+            setUpResourcesVariant(
+                mainCompilation
+            )
+        )
 
         val result = createKotlinVariant(componentName, mainCompilation, usageContexts)
 

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/targets/native/KotlinNativeTarget.kt

@@ -83,14 +83,11 @@ abstract class KotlinNativeTarget @Inject constructor(
             )
         )
 
-        if (project.kotlinPropertiesProvider.mppResourcesPublication) {
-            mutableUsageContexts.add(
-                project.multiplatformExtension.setUpResourcesVariant(
-                    this,
-                    mainCompilation,
-                )
+        mutableUsageContexts.addIfNotNull(
+            setUpResourcesVariant(
+                mainCompilation
             )
-        }
+        )
 
         val result = createKotlinVariant(targetName, mainCompilation, mutableUsageContexts)