refactor: Move ClassFinder using code inside .server.frontend

flow-lit-template/src/main/java/com/vaadin/flow/component/littemplate/internal/LitTemplateParserImpl.java

@@ -39,11 +39,11 @@
 import com.vaadin.flow.di.ResourceProvider;
 import com.vaadin.flow.internal.AnnotationReader;
 import com.vaadin.flow.internal.FileIOUtils;
+import com.vaadin.flow.internal.FrontendUtils;
 import com.vaadin.flow.internal.Pair;
 import com.vaadin.flow.server.Constants;
 import com.vaadin.flow.server.DependencyFilter;
 import com.vaadin.flow.server.VaadinService;
-import com.vaadin.flow.server.frontend.FrontendUtils;
 import com.vaadin.flow.shared.ui.Dependency;
 import com.vaadin.flow.shared.ui.LoadMode;
 

flow-plugins/flow-dev-bundle-plugin/src/main/java/com/vaadin/flow/plugin/maven/BuildDevBundleMojo.java

@@ -54,14 +54,14 @@
 import com.vaadin.flow.component.dependency.JavaScript;
 import com.vaadin.flow.component.dependency.JsModule;
 import com.vaadin.flow.component.dependency.NpmPackage;
+import com.vaadin.flow.internal.FrontendUtils;
 import com.vaadin.flow.plugin.base.BuildFrontendUtil;
 import com.vaadin.flow.plugin.base.PluginAdapterBase;
 import com.vaadin.flow.plugin.base.PluginAdapterBuild;
 import com.vaadin.flow.server.Constants;
 import com.vaadin.flow.server.InitParameters;
 import com.vaadin.flow.server.frontend.ExecutionFailedException;
 import com.vaadin.flow.server.frontend.FrontendTools;
-import com.vaadin.flow.server.frontend.FrontendUtils;
 import com.vaadin.flow.server.frontend.installer.NodeInstaller;
 import com.vaadin.flow.server.frontend.installer.Platform;
 import com.vaadin.flow.server.frontend.scanner.ClassFinder;
@@ -72,7 +72,6 @@
 import static com.vaadin.flow.server.Constants.META_INF;
 import static com.vaadin.flow.server.Constants.VAADIN_SERVLET_RESOURCES;
 import static com.vaadin.flow.server.Constants.VAADIN_WEBAPP_RESOURCES;
-import static com.vaadin.flow.server.frontend.FrontendUtils.FRONTEND;
 
 /**
  * Goal that builds the dev frontend bundle to be used in Express Build mode.
@@ -179,7 +178,8 @@ public class BuildDevBundleMojo extends AbstractMojo
     /**
      * A directory with project's frontend source files.
      */
-    @Parameter(defaultValue = "${project.basedir}/src/main/" + FRONTEND)
+    @Parameter(defaultValue = "${project.basedir}/src/main/"
+            + FrontendUtils.FRONTEND)
     private File frontendDirectory;
 
     @Parameter(property = InitParameters.NPM_EXCLUDE_WEB_COMPONENTS, defaultValue = "false")

flow-plugins/flow-gradle-plugin/src/functionalTest/kotlin/com/vaadin/gradle/VaadinSmokeTest.kt

@@ -25,8 +25,8 @@ import kotlin.test.expect
 import com.vaadin.flow.internal.JacksonUtils
 import com.vaadin.flow.internal.StringUtil
 import com.vaadin.flow.server.InitParameters
-import com.vaadin.flow.server.frontend.FrontendUtils
-import tools.jackson.databind.JsonNode
+import com.vaadin.flow.internal.FrontendUtils
+import tools.jackson.databind.JsonNode  
 import org.gradle.testkit.runner.BuildResult
 import org.gradle.testkit.runner.TaskOutcome
 import org.junit.Before

flow-plugins/flow-gradle-plugin/src/main/kotlin/com/vaadin/gradle/PrepareFrontendOutputProperties.kt

@@ -18,7 +18,7 @@ package com.vaadin.flow.gradle
 import java.io.File
 import com.vaadin.flow.plugin.base.BuildFrontendUtil
 import com.vaadin.flow.server.Constants
-import com.vaadin.flow.server.frontend.FrontendUtils
+import com.vaadin.flow.internal.FrontendUtils
 import org.gradle.api.provider.Property
 import org.gradle.api.tasks.OutputDirectory
 import org.gradle.api.tasks.OutputFile

flow-plugins/flow-gradle-plugin/src/main/kotlin/com/vaadin/gradle/VaadinBuildFrontendTask.kt

@@ -20,11 +20,12 @@ import com.vaadin.flow.plugin.base.BuildFrontendUtil
 import com.vaadin.flow.server.Constants
 import com.vaadin.flow.server.InitParameters
 import com.vaadin.flow.server.frontend.BundleValidationUtil
-import com.vaadin.flow.server.frontend.FrontendUtils
+import com.vaadin.flow.internal.FrontendUtils
 import com.vaadin.flow.server.frontend.Options
 import com.vaadin.flow.server.frontend.TaskCleanFrontendFiles
 import com.vaadin.flow.server.frontend.scanner.FrontendDependenciesScanner
 import com.vaadin.flow.server.frontend.scanner.FrontendDependenciesScanner.FrontendDependenciesScannerFactory
+import com.vaadin.flow.server.frontend.FrontendBuildUtils
 import com.vaadin.pro.licensechecker.LicenseChecker
 import com.vaadin.pro.licensechecker.MissingLicenseKeyException
 import org.gradle.api.DefaultTask
@@ -151,7 +152,7 @@ public abstract class VaadinBuildFrontendTask : DefaultTask() {
      * @return `true` to remove created files, `false` to keep the files
      */
     protected open fun cleanFrontendFiles(): Boolean {
-        if (FrontendUtils.isHillaUsed(BuildFrontendUtil.getFrontendDirectory(adapter.get()),
+        if (FrontendBuildUtils.isHillaUsed(BuildFrontendUtil.getFrontendDirectory(adapter.get()),
                         adapter.get().classFinder)) {
             /*
              * Override this to not clean generated frontend files after the

flow-plugins/flow-gradle-plugin/src/main/kotlin/com/vaadin/gradle/VaadinFlowPluginExtension.kt

@@ -23,7 +23,7 @@ import com.vaadin.flow.server.Constants
 import com.vaadin.flow.server.InitParameters
 import com.vaadin.flow.server.frontend.FrontendTools
 import com.vaadin.flow.server.frontend.FrontendToolsSettings
-import com.vaadin.flow.server.frontend.FrontendUtils
+import com.vaadin.flow.internal.FrontendUtils
 import com.vaadin.flow.server.frontend.installer.NodeInstaller
 import com.vaadin.flow.server.frontend.installer.Platform
 import groovy.lang.Closure

flow-plugins/flow-maven-plugin/src/main/java/com/vaadin/flow/plugin/maven/BuildFrontendMojo.java

@@ -34,13 +34,13 @@
 import com.vaadin.flow.component.dependency.JavaScript;
 import com.vaadin.flow.component.dependency.JsModule;
 import com.vaadin.flow.component.dependency.NpmPackage;
+import com.vaadin.flow.internal.FrontendUtils;
 import com.vaadin.flow.plugin.base.BuildFrontendUtil;
 import com.vaadin.flow.plugin.base.PluginAdapterBuild;
 import com.vaadin.flow.server.Constants;
 import com.vaadin.flow.server.InitParameters;
 import com.vaadin.flow.server.frontend.BundleValidationUtil;
 import com.vaadin.flow.server.frontend.ExecutionFailedException;
-import com.vaadin.flow.server.frontend.FrontendUtils;
 import com.vaadin.flow.server.frontend.Options;
 import com.vaadin.flow.server.frontend.TaskCleanFrontendFiles;
 import com.vaadin.flow.server.frontend.scanner.FrontendDependenciesScanner;

flow-plugins/flow-maven-plugin/src/main/java/com/vaadin/flow/plugin/maven/FlowModeAbstractMojo.java

@@ -46,22 +46,20 @@
 import org.apache.maven.project.MavenProject;
 import org.codehaus.plexus.build.BuildContext;
 
+import com.vaadin.flow.internal.FrontendUtils;
 import com.vaadin.flow.internal.StringUtil;
 import com.vaadin.flow.plugin.base.BuildFrontendUtil;
 import com.vaadin.flow.plugin.base.PluginAdapterBase;
 import com.vaadin.flow.server.Constants;
 import com.vaadin.flow.server.InitParameters;
 import com.vaadin.flow.server.frontend.FrontendTools;
-import com.vaadin.flow.server.frontend.FrontendUtils;
 import com.vaadin.flow.server.frontend.installer.NodeInstaller;
 import com.vaadin.flow.server.frontend.installer.Platform;
 import com.vaadin.flow.server.frontend.scanner.ClassFinder;
 import com.vaadin.flow.server.scanner.ReflectionsClassFinder;
 
 import static com.vaadin.flow.server.Constants.VAADIN_SERVLET_RESOURCES;
 import static com.vaadin.flow.server.Constants.VAADIN_WEBAPP_RESOURCES;
-import static com.vaadin.flow.server.frontend.FrontendUtils.FRONTEND;
-import static com.vaadin.flow.server.frontend.FrontendUtils.GENERATED;
 
 /**
  * The base class of Flow Mojos in order to compute correctly the modes.
@@ -92,7 +90,8 @@ public abstract class FlowModeAbstractMojo extends AbstractMojo
     /**
      * A directory with project's frontend source files.
      */
-    @Parameter(defaultValue = "${project.basedir}/src/main/" + FRONTEND)
+    @Parameter(defaultValue = "${project.basedir}/src/main/"
+            + FrontendUtils.FRONTEND)
     private File frontendDirectory;
 
     /**
@@ -476,7 +475,7 @@ public File generatedTsFolder() {
         if (generatedTsFolder != null) {
             return generatedTsFolder;
         }
-        return new File(frontendDirectory(), GENERATED);
+        return new File(frontendDirectory(), FrontendUtils.GENERATED);
     }
 
     @Override

flow-plugins/flow-maven-plugin/src/main/java/com/vaadin/flow/plugin/maven/GenerateNpmBOMMojo.java

@@ -32,8 +32,8 @@
 import org.apache.maven.shared.invoker.MavenInvocationException;
 
 import com.vaadin.flow.di.Lookup;
+import com.vaadin.flow.internal.FrontendUtils;
 import com.vaadin.flow.server.frontend.ExecutionFailedException;
-import com.vaadin.flow.server.frontend.FrontendUtils;
 import com.vaadin.flow.server.frontend.NodeTasks;
 import com.vaadin.flow.server.frontend.Options;
 import com.vaadin.flow.server.frontend.scanner.ClassFinder;

flow-plugins/flow-maven-plugin/src/main/java/com/vaadin/flow/plugin/maven/PrepareFrontendMojo.java

@@ -23,8 +23,8 @@
 import org.apache.maven.plugins.annotations.Mojo;
 import org.apache.maven.plugins.annotations.ResolutionScope;
 
+import com.vaadin.flow.internal.FrontendUtils;
 import com.vaadin.flow.plugin.base.BuildFrontendUtil;
-import com.vaadin.flow.server.frontend.FrontendUtils;
 
 /**
  * This goal checks that node and npm tools are installed and creates or updates

flow-plugins/flow-maven-plugin/src/test/java/com/vaadin/flow/plugin/maven/BuildFrontendMojoTest.java

@@ -64,14 +64,14 @@
 import tools.jackson.databind.node.ObjectNode;
 
 import com.vaadin.flow.di.Lookup;
+import com.vaadin.flow.internal.FrontendUtils;
 import com.vaadin.flow.internal.JacksonUtils;
 import com.vaadin.flow.internal.StringUtil;
 import com.vaadin.flow.plugin.TestUtils;
 import com.vaadin.flow.server.Constants;
 import com.vaadin.flow.server.InitParameters;
 import com.vaadin.flow.server.frontend.EndpointGeneratorTaskFactory;
 import com.vaadin.flow.server.frontend.FrontendTools;
-import com.vaadin.flow.server.frontend.FrontendUtils;
 import com.vaadin.flow.server.frontend.installer.NodeInstaller;
 import com.vaadin.flow.server.frontend.scanner.ClassFinder;
 import com.vaadin.pro.licensechecker.LicenseException;
@@ -84,14 +84,6 @@
 import static com.vaadin.flow.server.InitParameters.APPLICATION_IDENTIFIER;
 import static com.vaadin.flow.server.InitParameters.FRONTEND_HOTDEPLOY;
 import static com.vaadin.flow.server.InitParameters.SERVLET_PARAMETER_PRODUCTION_MODE;
-import static com.vaadin.flow.server.frontend.FrontendUtils.DEFAULT_FRONTEND_DIR;
-import static com.vaadin.flow.server.frontend.FrontendUtils.FRONTEND_FOLDER_ALIAS;
-import static com.vaadin.flow.server.frontend.FrontendUtils.IMPORTS_D_TS_NAME;
-import static com.vaadin.flow.server.frontend.FrontendUtils.IMPORTS_NAME;
-import static com.vaadin.flow.server.frontend.FrontendUtils.NODE_MODULES;
-import static com.vaadin.flow.server.frontend.FrontendUtils.TOKEN_FILE;
-import static com.vaadin.flow.server.frontend.FrontendUtils.VITE_CONFIG;
-import static com.vaadin.flow.server.frontend.FrontendUtils.VITE_GENERATED_CONFIG;
 import static java.io.File.pathSeparator;
 
 @NotThreadSafe
@@ -125,18 +117,20 @@
         projectBase = temporaryFolder.getRoot();
 
         tokenFile = new File(temporaryFolder.getRoot(),
-                VAADIN_SERVLET_RESOURCES + TOKEN_FILE);
+                VAADIN_SERVLET_RESOURCES + FrontendUtils.TOKEN_FILE);
 
         File npmFolder = projectBase;
-        nodeModulesPath = new File(npmFolder, NODE_MODULES);
-        frontendDirectory = new File(npmFolder, DEFAULT_FRONTEND_DIR);
+        nodeModulesPath = new File(npmFolder, FrontendUtils.NODE_MODULES);
+        frontendDirectory = new File(npmFolder,
+                FrontendUtils.DEFAULT_FRONTEND_DIR);
         importsFile = FrontendUtils.getFlowGeneratedImports(frontendDirectory);
         jarResourcesFolder = new File(
                 new File(frontendDirectory, FrontendUtils.GENERATED),
                 FrontendUtils.JAR_RESOURCES_FOLDER);
         packageJson = new File(npmFolder, PACKAGE_JSON).getAbsolutePath();
-        viteConfig = new File(npmFolder, VITE_CONFIG).getAbsolutePath();
-        viteGenerated = new File(npmFolder, VITE_GENERATED_CONFIG)
+        viteConfig = new File(npmFolder, FrontendUtils.VITE_CONFIG)
+                .getAbsolutePath();
+        viteGenerated = new File(npmFolder, FrontendUtils.VITE_GENERATED_CONFIG)
                 .getAbsolutePath();
         webpackOutputDirectory = new File(projectBase, VAADIN_WEBAPP_RESOURCES);
         resourceOutputDirectory = new File(projectBase,
@@ -223,7 +217,7 @@
     }
 
     @After
     public void teardown() throws IOException {
         if (FileUtils.fileExists(packageJson)) {
             FileUtils.fileDelete(packageJson);
         }
@@ -338,8 +332,8 @@
                 "build");
 
         List<File> initialFiles = gatherFiles(jarResourcesFolder);
         initialFiles.forEach(file -> Assert.assertFalse(String.format(
                 "Test resource shouldn't exist before running mojo.", file),
                 TEST_PROJECT_RESOURCE_JS.equals(file.getName())));
         mojo.execute();
 
@@ -364,10 +358,11 @@
 
         String generated = "'%s' should have been generated into 'build/frontend'";
 
-        Assert.assertTrue(String.format(generated, IMPORTS_NAME),
-                generatedFiles.contains(IMPORTS_NAME));
-        Assert.assertTrue(String.format(generated, IMPORTS_D_TS_NAME),
-                generatedFiles.contains(IMPORTS_D_TS_NAME));
+        Assert.assertTrue(String.format(generated, FrontendUtils.IMPORTS_NAME),
+                generatedFiles.contains(FrontendUtils.IMPORTS_NAME));
+        Assert.assertTrue(
+                String.format(generated, FrontendUtils.IMPORTS_D_TS_NAME),
+                generatedFiles.contains(FrontendUtils.IMPORTS_D_TS_NAME));
 
         Assert.assertFalse("No 'target' directory should exist after build.",
                 target.exists());
@@ -494,10 +489,10 @@
             throws IOException, IllegalAccessException, MojoExecutionException,
             MojoFailureException {
 
         File projectBase = temporaryFolder.getRoot();
         File webpackOutputDirectory = new File(projectBase,
                 VAADIN_WEBAPP_RESOURCES);
         File resourceOutputDirectory = new File(projectBase,
                 VAADIN_SERVLET_RESOURCES);
 
         ReflectionUtils.setVariableValueInObject(mojo, "webpackOutputDirectory",
@@ -767,7 +762,7 @@
 
     private String addFrontendPrefix(String s) {
         if (s.startsWith("./")) {
-            return FRONTEND_FOLDER_ALIAS + s.substring(2);
+            return FrontendUtils.FRONTEND_FOLDER_ALIAS + s.substring(2);
         }
         return s;
     }

flow-plugins/flow-maven-plugin/src/test/java/com/vaadin/flow/plugin/maven/CleanFrontendMojoTest.java

@@ -35,6 +35,7 @@
 import tools.jackson.databind.JsonNode;
 import tools.jackson.databind.node.ObjectNode;
 
+import com.vaadin.flow.internal.FrontendUtils;
 import com.vaadin.flow.internal.JacksonUtils;
 import com.vaadin.flow.server.Constants;
 import com.vaadin.flow.server.frontend.FrontendTools;
@@ -45,7 +46,6 @@
 import static com.vaadin.flow.server.Constants.PACKAGE_JSON;
 import static com.vaadin.flow.server.Constants.VAADIN_SERVLET_RESOURCES;
 import static com.vaadin.flow.server.Constants.VAADIN_WEBAPP_RESOURCES;
-import static com.vaadin.flow.server.frontend.FrontendUtils.NODE_MODULES;
 
 public class CleanFrontendMojoTest {
     @Rule
@@ -115,7 +115,8 @@ public void mavenGoal_when_packageJsonMissing() throws Exception {
     @Test
     public void should_removeNodeModulesFolder()
             throws MojoFailureException, MojoExecutionException {
-        final File nodeModules = new File(projectBase, NODE_MODULES);
+        final File nodeModules = new File(projectBase,
+                FrontendUtils.NODE_MODULES);
         Assert.assertTrue("Failed to create 'node_modules'",
                 nodeModules.mkdirs());
         mojo.execute();
@@ -127,7 +128,8 @@ public void should_removeNodeModulesFolder()
     public void should_notRemoveNodeModulesFolder_hilla()
             throws MojoFailureException, IOException, MojoExecutionException {
         enableHilla();
-        final File nodeModules = new File(projectBase, NODE_MODULES);
+        final File nodeModules = new File(projectBase,
+                FrontendUtils.NODE_MODULES);
         Assert.assertTrue("Failed to create 'node_modules'",
                 nodeModules.mkdirs());
         mojo.execute();

flow-plugins/flow-maven-plugin/src/test/java/com/vaadin/flow/plugin/maven/GenerateNpmBOMMojoTest.java

@@ -32,6 +32,7 @@
 import org.mockito.Mockito;
 
 import com.vaadin.flow.di.Lookup;
+import com.vaadin.flow.internal.FrontendUtils;
 import com.vaadin.flow.plugin.TestUtils;
 import com.vaadin.flow.server.frontend.EndpointGeneratorTaskFactory;
 import com.vaadin.flow.server.frontend.FrontendTools;
@@ -40,7 +41,6 @@
 import static com.vaadin.flow.plugin.maven.BuildFrontendMojoTest.setProject;
 import static com.vaadin.flow.server.Constants.PACKAGE_JSON;
 import static com.vaadin.flow.server.Constants.VAADIN_SERVLET_RESOURCES;
-import static com.vaadin.flow.server.frontend.FrontendUtils.DEFAULT_FRONTEND_DIR;
 
 public class GenerateNpmBOMMojoTest {
 
@@ -63,7 +63,8 @@ public void setUp() throws Exception {
         this.mojo = Mockito.spy(new GenerateNpmBOMMojo());
 
         File projectBase = temporaryFolder.getRoot();
-        File frontendDirectory = new File(projectBase, DEFAULT_FRONTEND_DIR);
+        File frontendDirectory = new File(projectBase,
+                FrontendUtils.DEFAULT_FRONTEND_DIR);
         resourceOutputDirectory = new File(projectBase,
                 VAADIN_SERVLET_RESOURCES);
         jarResourcesSource = new File(projectBase,

flow-plugins/flow-maven-plugin/src/test/java/com/vaadin/flow/plugin/maven/PrepareFrontendMojoTest.java

@@ -34,6 +34,7 @@
 import org.mockito.Mockito;
 import tools.jackson.databind.node.ObjectNode;
 
+import com.vaadin.flow.internal.FrontendUtils;
 import com.vaadin.flow.internal.JacksonUtils;
 import com.vaadin.flow.plugin.TestUtils;
 import com.vaadin.flow.server.Constants;
@@ -50,14 +51,13 @@
 import static com.vaadin.flow.server.Constants.VAADIN_WEBAPP_RESOURCES;
 import static com.vaadin.flow.server.InitParameters.FRONTEND_HOTDEPLOY;
 import static com.vaadin.flow.server.InitParameters.SERVLET_PARAMETER_PRODUCTION_MODE;
-import static com.vaadin.flow.server.frontend.FrontendUtils.TOKEN_FILE;
 
 public class PrepareFrontendMojoTest {
     @Rule
     public TemporaryFolder temporaryFolder = new TemporaryFolder();
 
     @Rule
     public ExpectedException exception = ExpectedException.none();
 
     private final PrepareFrontendMojo mojo = new PrepareFrontendMojo();
     private String packageJson;
@@ -75,7 +75,7 @@
         projectBase = temporaryFolder.getRoot();
 
         tokenFile = new File(temporaryFolder.getRoot(),
-                VAADIN_SERVLET_RESOURCES + TOKEN_FILE);
+                VAADIN_SERVLET_RESOURCES + FrontendUtils.TOKEN_FILE);
 
         packageJson = new File(projectBase, PACKAGE_JSON).getAbsolutePath();
         webpackOutputDirectory = new File(projectBase, VAADIN_WEBAPP_RESOURCES);

flow-plugins/flow-plugin-base/src/main/java/com/vaadin/flow/plugin/base/BuildFrontendUtil.java

@@ -47,13 +47,13 @@
 
 import com.vaadin.flow.di.Lookup;
 import com.vaadin.flow.internal.FileIOUtils;
+import com.vaadin.flow.internal.FrontendUtils;
 import com.vaadin.flow.internal.JacksonUtils;
 import com.vaadin.flow.server.Constants;
 import com.vaadin.flow.server.InitParameters;
 import com.vaadin.flow.server.frontend.ExecutionFailedException;
 import com.vaadin.flow.server.frontend.FrontendTools;
 import com.vaadin.flow.server.frontend.FrontendToolsSettings;
-import com.vaadin.flow.server.frontend.FrontendUtils;
 import com.vaadin.flow.server.frontend.NodeTasks;
 import com.vaadin.flow.server.frontend.Options;
 import com.vaadin.flow.server.frontend.ProdBundleUtils;
@@ -85,8 +85,6 @@
 import static com.vaadin.flow.server.InitParameters.REACT_ENABLE;
 import static com.vaadin.flow.server.InitParameters.SERVLET_PARAMETER_INITIAL_UIDL;
 import static com.vaadin.flow.server.InitParameters.SERVLET_PARAMETER_PRODUCTION_MODE;
-import static com.vaadin.flow.server.frontend.FrontendUtils.GENERATED;
-import static com.vaadin.flow.server.frontend.FrontendUtils.TOKEN_FILE;
 
 /**
  * Util class provides all methods a Plugin will need.
@@ -124,7 +122,8 @@ public static ClassFinder getClassFinder(List<String> classpathElements) {
      */
     public static File getTokenFile(PluginAdapterBase adapter) {
 
-        return new File(adapter.servletResourceOutputDirectory(), TOKEN_FILE);
+        return new File(adapter.servletResourceOutputDirectory(),
+                FrontendUtils.TOKEN_FILE);
     }
 
     /**
@@ -228,7 +227,7 @@ public static File propagateBuildInfo(PluginAdapterBase adapter) {
         // For forked processes not accessing to System.properties we leave a
         // token file with the information about the build
         File token = new File(adapter.servletResourceOutputDirectory(),
-                TOKEN_FILE);
+                FrontendUtils.TOKEN_FILE);
         ObjectNode buildInfo = JacksonUtils.createObjectNode();
         buildInfo.put(SERVLET_PARAMETER_PRODUCTION_MODE, false);
         buildInfo.put(SERVLET_PARAMETER_INITIAL_UIDL,
@@ -482,7 +481,7 @@ public static File getGeneratedFrontendDirectory(
                 .startsWith(adapter.frontendDirectory().toPath())) {
             // Possibly move frontend folder.
             File frontendDirectory = getFrontendDirectory(adapter);
-            return new File(frontendDirectory, GENERATED);
+            return new File(frontendDirectory, FrontendUtils.GENERATED);
         }
         // Return given generated folder
         return adapter.generatedTsFolder();