diff --git a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/decompiler/navigation/JetSourceNavigationHelper.java b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/decompiler/navigation/JetSourceNavigationHelper.java
index 9d085903b89..4c0f03fb9c7 100644
--- a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/decompiler/navigation/JetSourceNavigationHelper.java
+++ b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/decompiler/navigation/JetSourceNavigationHelper.java
@@ -21,6 +21,7 @@ import com.google.common.collect.Sets;
 import com.intellij.openapi.module.Module;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.roots.*;
+import com.intellij.openapi.roots.libraries.Library;
 import com.intellij.openapi.util.Condition;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.psi.JavaPsiFacade;
@@ -44,6 +45,7 @@ import org.jetbrains.kotlin.descriptors.CallableDescriptor;
 import org.jetbrains.kotlin.descriptors.ClassDescriptor;
 import org.jetbrains.kotlin.descriptors.impl.ModuleDescriptorImpl;
 import org.jetbrains.kotlin.di.InjectorForLazyResolve;
+import org.jetbrains.kotlin.idea.caches.resolve.JsProjectDetector;
 import org.jetbrains.kotlin.idea.stubindex.JetFullClassNameIndex;
 import org.jetbrains.kotlin.idea.stubindex.JetTopLevelFunctionFqnNameIndex;
 import org.jetbrains.kotlin.idea.stubindex.JetTopLevelPropertyFqnNameIndex;
@@ -93,7 +95,9 @@ public class JetSourceNavigationHelper {
         Project project = decompiledDeclaration.getProject();
         ProjectFileIndex projectFileIndex = ProjectFileIndex.SERVICE.getInstance(project);
 
-        if (!projectFileIndex.isInLibraryClasses(libraryFile)) {
+        boolean isJsProject = JsProjectDetector.isJsProject(project);
+
+        if (!isJsProject && !projectFileIndex.isInLibraryClasses(libraryFile)) {
             return GlobalSearchScope.EMPTY_SCOPE;
         }
 
@@ -104,6 +108,13 @@ public class JetSourceNavigationHelper {
             }
         }
 
+        if (isJsProject) {
+            Library library = NavigationPackage.getKotlinJavascriptLibrary(libraryFile, project);
+            if (library != null) {
+                KotlinPackage.addAll(sourceRootSet, library.getFiles(OrderRootType.SOURCES));
+            }
+        }
+
         return new LibrarySourcesScope(project, sourceRootSet);
     }