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idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/ScriptDependenciesUpdater.kt

@@ -18,6 +18,7 @@ package org.jetbrains.kotlin.idea.core.script
 
 import com.intellij.openapi.application.Application
 import com.intellij.openapi.application.ApplicationManager
+import com.intellij.openapi.components.ServiceManager
 import com.intellij.openapi.editor.EditorFactory
 import com.intellij.openapi.editor.event.DocumentEvent
 import com.intellij.openapi.editor.event.DocumentListener
@@ -148,6 +149,20 @@ class ScriptDependenciesUpdater(
             }
         }, project.messageBus.connect())
     }
+
+    private fun areDependenciesCached(file: VirtualFile): Boolean {
+        return cache[file] != null
+    }
+
+    companion object {
+        @JvmStatic
+        fun getInstance(project: Project): ScriptDependenciesUpdater =
+            ServiceManager.getService(project, ScriptDependenciesUpdater::class.java)
+
+        fun areDependenciesCached(file: KtFile): Boolean {
+            return getInstance(file.project).areDependenciesCached(file.virtualFile)
+        }
+    }
 }
 
 @set: TestOnly