Gradle: provide descriptions for JS tasks

#KT-31560 Fixed

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

@@ -35,6 +35,7 @@ class KotlinJsTarget(project: Project, platformType: KotlinPlatformType) :
     val runTaskName get() = lowerCamelCaseName(disambiguationClassifier, runTaskNameSuffix)
     val runTask
         get() = project.tasks.maybeCreate(runTaskName).also {
+            it.description = "Run js on all configured platforms"
             if (runTaskName != runTaskNameSuffix) {
                 project.whenEvaluated {
                     project.tasks.maybeCreate(runTaskNameSuffix).dependsOn(it)

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

@@ -90,7 +90,7 @@ class NpmSimpleLinker(val rootProject: Project) {
             }
 
             if (result.exitValue != 0) {
-                error("Cannot create window junctions: nodejs exited with ${result.exitValue}")
+                error("Cannot create windows junctions: nodejs exited with ${result.exitValue}")
             }
         }
     }

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/subtargets/KotlinBrowserJs.kt

@@ -19,6 +19,9 @@ class KotlinBrowserJs(target: KotlinJsTarget) :
     KotlinJsSubTarget(target, "browser"),
     KotlinJsBrowserDsl {
 
+    override val testTaskDescription: String
+        get() = "Run all ${target.name} tests inside browser using karma and webpack"
+
     private val webpackTaskName = disambiguateCamelCased("webpack")
 
     override fun configureDefaultTestFramework(it: KotlinJsTest) {
@@ -43,6 +46,7 @@ class KotlinBrowserJs(target: KotlinJsTarget) :
             it.dependsOn(target.project.nodeJs.root.npmResolveTask, compileKotlinTask)
 
             it.compilation = compilation
+            it.description = "build webpack bundle"
 
             project.tasks.getByName(LifecycleBasePlugin.ASSEMBLE_TASK_NAME).dependsOn(it)
         }
@@ -57,6 +61,7 @@ class KotlinBrowserJs(target: KotlinJsTarget) :
 
             it.bin = "webpack-dev-server"
             it.compilation = compilation
+            it.description = "start webpack dev server"
 
             it.devServer = KotlinWebpackConfigWriter.DevServer(
                 open = true,

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/subtargets/KotlinJsSubTarget.kt

@@ -62,6 +62,8 @@ abstract class KotlinJsSubTarget(
         }
     }
 
+    abstract val testTaskDescription: String
+
     private fun configureTests(compilation: KotlinJsCompilation) {
         // apply plugin (cannot be done at task instantiation time)
         val nodeJs = NodeJsPlugin.apply(target.project).root
@@ -70,6 +72,7 @@ abstract class KotlinJsSubTarget(
             val compileTask = compilation.compileKotlinTask
 
             testJs.group = LifecycleBasePlugin.VERIFICATION_GROUP
+            testJs.description = testTaskDescription
 
             testJs.dependsOn(target.project.nodeJs.root.npmResolveTask, compileTask, nodeJs.nodeJsSetupTask)
 

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/subtargets/KotlinNodeJs.kt

@@ -19,6 +19,9 @@ class KotlinNodeJs(target: KotlinJsTarget) :
     KotlinJsSubTarget(target, "node"),
     KotlinJsNodeDsl {
 
+    override val testTaskDescription: String
+        get() = "Run all ${target.name} tests inside nodejs using the builtin test framework"
+
     override fun runTask(body: NodeJsExec.() -> Unit) {
         (project.tasks.getByName(runTaskName) as NodeJsExec).body()
     }
@@ -30,7 +33,11 @@ class KotlinNodeJs(target: KotlinJsTarget) :
     override fun configureRun(compilation: KotlinJsCompilation) {
         val project = target.project
 
+        "true".toBoolean()
+
         val runTaskHolder = project.createOrRegisterTask<NodeJsExec>(disambiguateCamelCased("run")) { runTask ->
+            runTask.description = "run compiled js in nodejs"
+
             val compileKotlinTask = compilation.compileKotlinTask
             runTask.dependsOn(target.project.nodeJs.root.npmResolveTask, compileKotlinTask)