[Gradle, JS] Use overlay with false warnings

Merge-request: KT-MR-6343
Merged-by: Ilya Goncharov <Ilya.Goncharov@jetbrains.com>

^KT-51527 fixed

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

@@ -117,7 +117,13 @@ open class KotlinBrowserJsIr @Inject constructor(target: KotlinJsIrTarget) :
                         {
                             task.devServer = KotlinWebpackConfig.DevServer(
                                 open = true,
-                                static = mutableListOf(compilation.output.resourcesDir.canonicalPath)
+                                static = mutableListOf(compilation.output.resourcesDir.canonicalPath),
+                                client = KotlinWebpackConfig.DevServer.Client(
+                                    KotlinWebpackConfig.DevServer.Client.Overlay(
+                                        errors = true,
+                                        warnings = false
+                                    )
+                                )
                             )
                         },
                         {

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

@@ -157,7 +157,13 @@ open class KotlinBrowserJs @Inject constructor(target: KotlinJsTarget) :
                         {
                             task.devServer = KotlinWebpackConfig.DevServer(
                                 open = true,
-                                static = mutableListOf(compilation.output.resourcesDir.canonicalPath)
+                                static = mutableListOf(compilation.output.resourcesDir.canonicalPath),
+                                client = KotlinWebpackConfig.DevServer.Client(
+                                    KotlinWebpackConfig.DevServer.Client.Overlay(
+                                        errors = true,
+                                        warnings = false
+                                    )
+                                )
                             )
                         },
                         {

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/targets/js/webpack/KotlinWebpackConfig.kt

@@ -169,8 +169,18 @@ data class KotlinWebpackConfig(
         var port: Int? = null,
         var proxy: MutableMap<String, Any>? = null,
         var static: MutableList<String>? = null,
-        var contentBase: MutableList<String>? = null
+        var contentBase: MutableList<String>? = null,
-    ) : Serializable
+        var client: Client? = null
+    ) : Serializable {
+        data class Client(
+            var overlay: Any /* Overlay | Boolean */
+        ) : Serializable {
+            data class Overlay(
+                var errors: Boolean,
+                var warnings: Boolean
+            ) : Serializable
+        }
+    }
 
     fun save(configFile: File) {
         configFile.writer().use {