force import of interface when using a static field (even when through an implementing class)

transpiler/src/main/java/org/jsweet/transpiler/Java2TypeScriptTranslator.java

@@ -4095,6 +4095,17 @@ public class Java2TypeScriptTranslator extends AbstractTreePrinter {
 								} else {
 									if (!varSym.owner.getSimpleName().toString().equals(GLOBALS_PACKAGE_NAME)) {
 										print(varSym.owner.getSimpleName().toString());
+										if(context.useModules) {
+											if (varSym.owner instanceof TypeElement) {
+												ModuleImportDescriptor moduleImport = getAdapter().getModuleImportDescriptor(
+														new CompilationUnitElementSupport(compilationUnit),
+														varSym.owner.getSimpleName().toString(), (TypeElement) varSym.owner);
+												if (moduleImport != null) {
+													useModule(moduleImport);
+												}
+											}
+
+										}
 										if (lazyInitializedStatic && varSym.owner.isEnum()) {
 											print(ENUM_WRAPPER_CLASS_SUFFIX);
 										}

transpiler/src/test/java/org/jsweet/test/transpiler/StaticsTests.java

@@ -16,18 +16,20 @@
  */
 package org.jsweet.test.transpiler;
 
+import org.junit.Assert;
+import org.junit.Ignore;
 import org.junit.Test;
 
 import source.statics.AnonymousClasses;
 import source.statics.Classes;
 import source.statics.DefaultValues;
 import source.statics.InnerClasses;
-import source.statics.StaticsInInterfaces;
 import source.statics.StaticInitializer;
 import source.statics.StaticInitializerWithNoFields;
-
-import org.junit.Assert;
-import org.junit.Ignore;
+import source.statics.StaticsInInterfaces;
+import source.statics.interface_import.definitions.AClass;
+import source.statics.interface_import.definitions.AnInterface;
+import source.statics.interface_import.uses.Using;
 
 public class StaticsTests extends AbstractTest {
 
@@ -88,4 +90,10 @@ public class StaticsTests extends AbstractTest {
 		}, getSourceFile(DefaultValues.class));
 	}
 
+	@Test
+	public void testImportInterface() {
+		transpile(TestTranspilationHandler::assertNoProblems, getSourceFile(AClass.class),
+				getSourceFile(AnInterface.class), getSourceFile(Using.class));
+	}
+
 }

transpiler/src/test/java/source/statics/interface_import/definitions/AClass.java

@@ -0,0 +1,5 @@
+package source.statics.interface_import.definitions;
+
+public class AClass implements AnInterface {
+	
+}

transpiler/src/test/java/source/statics/interface_import/definitions/AnInterface.java

@@ -0,0 +1,7 @@
+package source.statics.interface_import.definitions;
+
+public interface AnInterface {
+
+	public final static int I = 1;
+	
+}

transpiler/src/test/java/source/statics/interface_import/uses/Using.java

@@ -0,0 +1,10 @@
+package source.statics.interface_import.uses;
+
+import source.statics.interface_import.definitions.AClass;
+
+public class Using extends AClass {
+	
+	public int m() {
+		return I;
+	}
+}