[Gradle, JS] Use unique representation for npm dependency

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/npm/NpmDependency.kt

@@ -87,7 +87,7 @@ data class NpmDependency(
 
     val key: String = name
 
-    override fun toString() = "$scope $key: $version, $generateExternals"
+    override fun toString() = "$key: $version"
 
     override fun getFiles(): FileCollection = project.files(resolve(true))
 
@@ -110,6 +110,9 @@ data class NpmDependency(
     }
 
     override fun getReason(): String? = reason
+
+    fun uniqueRepresentation() =
+        "$scope $key:$version, $generateExternals"
 }
 
 internal fun directoryNpmDependency(

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/npm/tasks/KotlinPackageJsonTask.kt

@@ -11,6 +11,7 @@ import org.gradle.api.tasks.*
 import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinJsCompilation
 import org.jetbrains.kotlin.gradle.targets.js.nodejs.NodeJsRootExtension
 import org.jetbrains.kotlin.gradle.targets.js.nodejs.NodeJsRootPlugin
+import org.jetbrains.kotlin.gradle.targets.js.npm.NpmDependency
 import org.jetbrains.kotlin.gradle.targets.js.npm.npmProject
 import org.jetbrains.kotlin.gradle.targets.js.npm.resolver.KotlinCompilationNpmResolver
 import org.jetbrains.kotlin.gradle.targets.js.npm.resolver.PACKAGE_JSON_UMBRELLA_TASK_NAME
@@ -40,7 +41,8 @@ open class KotlinPackageJsonTask : DefaultTask() {
             .getTaskRequirements(compilation)
             .flatMap { it.requiredNpmDependencies }
             .map { it.createDependency(project) }
-            .map { it.toString() }
+            .filterIsInstance<NpmDependency>()
+            .map { it.uniqueRepresentation() }
 
     @get:Nested
     internal val producerInputs: KotlinCompilationNpmResolver.PackageJsonProducerInputs