diff --git a/libraries/kotlin.test/js/build.gradle b/libraries/kotlin.test/js/build.gradle
index b2304d89ddb..a83851d5d31 100644
--- a/libraries/kotlin.test/js/build.gradle
+++ b/libraries/kotlin.test/js/build.gradle
@@ -16,6 +16,9 @@ compileKotlin2Js {
     kotlinOptions {
         moduleKind = "umd"
         outputFile = "${buildDir}/classes/main/kotlin-test.js"
+        sourceMap = true
+        sourceMapPrefix = "./"
+        sourceMapEmbedSources = "always"
     }
 }
 
diff --git a/node_utils.xml b/node_utils.xml
index f7fd33af685..8ed736c687e 100644
--- a/node_utils.xml
+++ b/node_utils.xml
@@ -112,6 +112,10 @@
         <publish-to-npm template="kotlin" version="${kotlin.deploy.version}" tag="${kotlin.deploy.tag}">
             <copy file="${js.stdlib.output.dir}/kotlin.js" todir="${package_deploy_dir}" failonerror="true" />
             <copy file="${js.stdlib.output.dir}/kotlin.meta.js" todir="${package_deploy_dir}" failonerror="true" />
+	    <copy file="${js.stdlib.output.dir}/kotlin.js.map"  todir="${package_deploy_dir}" failonerror="true" />
+            <copy todir="${package_deploy_dir}/kotlin" failonerror="true">
+                 <fileset dir="${js.stdlib.output.dir}/kotlin"/>
+            </copy>
         </publish-to-npm>
     </target>
 
@@ -128,6 +132,10 @@
         <publish-to-npm template="kotlin-test" version="${kotlin.deploy.version}" tag="${kotlin.deploy.tag}">
             <copy file="${js.stdlib.output.dir}/kotlin-test.js" todir="${package_deploy_dir}" failonerror="true" />
             <copy file="${js.stdlib.output.dir}/kotlin-test.meta.js" todir="${package_deploy_dir}" failonerror="true" />
+            <copy file="${js.stdlib.output.dir}/kotlin-test.js.map"  todir="${package_deploy_dir}" failonerror="true" />
+            <copy todir="${package_deploy_dir}/kotlin-test" failonerror="true">
+                 <fileset dir="${js.stdlib.output.dir}/kotlin-test"/>
+            </copy>
         </publish-to-npm>
     </target>