Windows source-map-loading with absolute paths

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/testing/karma/KotlinKarma.kt

@@ -24,7 +24,6 @@ import org.jetbrains.kotlin.gradle.targets.js.nodejs.NodeJsRootPlugin
 import org.jetbrains.kotlin.gradle.targets.js.npm.npmProject
 import org.jetbrains.kotlin.gradle.targets.js.testing.*
 import org.jetbrains.kotlin.gradle.targets.js.webpack.KotlinWebpackConfig
-import org.jetbrains.kotlin.gradle.targets.js.webpack.KotlinWebpackConfig.Devtool
 import org.jetbrains.kotlin.gradle.testing.internal.reportsDir
 import org.slf4j.Logger
 import java.io.File
@@ -150,7 +149,7 @@ class KotlinKarma(override val compilation: KotlinJsCompilation) : KotlinJsTestF
         val webpackConfigWriter = KotlinWebpackConfig(
             configDirectory = project.projectDir.resolve("webpack.config.d").takeIf { it.isDirectory },
             sourceMaps = true,
-            devtool = Devtool.INLINE_SOURCE_MAP,
+            devtool = null,
             export = false,
             progressReporter = true,
             progressReporterPathFilter = nodeJs.rootPackageDir.absolutePath
@@ -164,6 +163,17 @@ class KotlinKarma(override val compilation: KotlinJsCompilation) : KotlinJsTestF
             it.appendln("function createWebpackConfig() {")
 
             webpackConfigWriter.appendTo(it)
+            //language=ES6
+            it.appendln(
+                """
+                (function() {
+                    const webpack = require('webpack');
+                    config.plugins.push(new webpack.SourceMapDevToolPlugin({
+                        moduleFilenameTemplate: "[absolute-resource-path]"
+                    }))
+                })();
+            """.trimIndent()
+            )
 
             it.appendln("   return config;")
             it.appendln("}")

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

@@ -26,7 +26,7 @@ data class KotlinWebpackConfig(
     val bundleAnalyzerReportDir: File? = null,
     val reportEvaluatedConfigFile: File? = null,
     val devServer: DevServer? = null,
-    val devtool: Devtool = Devtool.EVAL_SOURCE_MAP,
+    val devtool: Devtool? = Devtool.EVAL_SOURCE_MAP,
     val showProgress: Boolean = false,
     val sourceMaps: Boolean = false,
     val export: Boolean = true,
@@ -79,8 +79,7 @@ data class KotlinWebpackConfig(
 
     enum class Devtool(val code: String) {
         EVAL_SOURCE_MAP("eval-source-map"),
-        SOURCE_MAP("source-map"),
-        INLINE_SOURCE_MAP("inline-source-map")
+        SOURCE_MAP("source-map")
     }
 
     fun save(configFile: File) {
@@ -197,7 +196,7 @@ data class KotlinWebpackConfig(
                         use: ["kotlin-source-map-loader"],
                         enforce: "pre"
                 });
-                config.devtool = '${devtool.code}';
+                config.devtool = ${devtool?.code?.let { "'$it'" } ?: false};
                 
             """.trimIndent()
         )