diff --git a/src/main/webapp/app/home/ci-cd/ci-cd.component.ts b/src/main/webapp/app/home/ci-cd/ci-cd.component.ts
index dedf5994..d03dd046 100644
--- a/src/main/webapp/app/home/ci-cd/ci-cd.component.ts
+++ b/src/main/webapp/app/home/ci-cd/ci-cd.component.ts
@@ -52,14 +52,14 @@ export class CiCdComponent implements OnInit {
   ngOnInit(): void {
     this.gitConfig = this.gitConfigurationService.gitConfig;
     if (this.gitConfig) {
-      this.gitlabConfigured = this.gitConfig.gitlabConfigured || false;
-      this.githubConfigured = this.gitConfig.githubConfigured || false;
+      this.gitlabConfigured = this.gitConfig.gitlabConfigured ?? false;
+      this.githubConfigured = this.gitConfig.githubConfigured ?? false;
     }
 
     this.gitConfigurationService.sharedData.subscribe((gitConfig: GitConfigurationModel) => {
       this.gitConfig = gitConfig;
-      this.gitlabConfigured = gitConfig.gitlabConfigured || false;
-      this.githubConfigured = gitConfig.githubConfigured || false;
+      this.gitlabConfigured = gitConfig.gitlabConfigured ?? false;
+      this.githubConfigured = gitConfig.githubConfigured ?? false;
     });
   }
 
diff --git a/src/main/webapp/app/home/generator/generator.component.ts b/src/main/webapp/app/home/generator/generator.component.ts
index d926ddc9..d2dbbd30 100644
--- a/src/main/webapp/app/home/generator/generator.component.ts
+++ b/src/main/webapp/app/home/generator/generator.component.ts
@@ -124,13 +124,13 @@ export class GeneratorComponent implements OnInit {
     this.languageOptions = GeneratorComponent.getAllSupportedLanguageOptions();
     this.gitConfig = this.gitConfigurationService.gitConfig;
     if (this.gitConfig) {
-      this.gitlabConfigured = this.gitConfig.gitlabConfigured || false;
-      this.githubConfigured = this.gitConfig.githubConfigured || false;
+      this.gitlabConfigured = this.gitConfig.gitlabConfigured ?? false;
+      this.githubConfigured = this.gitConfig.githubConfigured ?? false;
     }
     this.gitConfigurationService.sharedData.subscribe((gitConfig: GitConfigurationModel) => {
       if (gitConfig) {
-        this.gitlabConfigured = gitConfig.gitlabConfigured || false;
-        this.githubConfigured = gitConfig.githubConfigured || false;
+        this.gitlabConfigured = gitConfig.gitlabConfigured ?? false;
+        this.githubConfigured = gitConfig.githubConfigured ?? false;
       }
     });
   }
@@ -273,8 +273,8 @@ export class GeneratorComponent implements OnInit {
 
   changeDatabaseType(): void {
     if (this.model.databaseType === 'sql') {
-      this.model.prodDatabaseType = AllProdDatabaseTypes.find(type => !this.isProdDatabaseOptionHidden('sql', type)) || 'mysql';
-      this.model.devDatabaseType = AllDevDatabaseTypes.find(type => !this.isDevDatabaseOptionHidden('sql', type)) || 'h2Disk';
+      this.model.prodDatabaseType = AllProdDatabaseTypes.find(type => !this.isProdDatabaseOptionHidden('sql', type)) ?? 'mysql';
+      this.model.devDatabaseType = AllDevDatabaseTypes.find(type => !this.isDevDatabaseOptionHidden('sql', type)) ?? 'h2Disk';
       this.model.cacheProvider = 'ehcache';
       this.model.enableHibernateCache = true;
     } else if (this.model.databaseType === 'mongodb') {
@@ -310,7 +310,7 @@ export class GeneratorComponent implements OnInit {
 
     if (this.model.databaseType === 'sql') {
       // Find first allowed dev database type
-      this.model.devDatabaseType = AllDevDatabaseTypes.find(type => !this.isDevDatabaseOptionHidden('sql', type)) || 'h2Disk';
+      this.model.devDatabaseType = AllDevDatabaseTypes.find(type => !this.isDevDatabaseOptionHidden('sql', type)) ?? 'h2Disk';
     } else if (this.model.prodDatabaseType === 'mongodb') {
       this.model.devDatabaseType = 'mongodb';
       this.model.cacheProvider = 'no';
diff --git a/src/main/webapp/app/home/generator/jhipster.configuration.model.ts b/src/main/webapp/app/home/generator/jhipster.configuration.model.ts
index 3871ed3a..b6042719 100644
--- a/src/main/webapp/app/home/generator/jhipster.configuration.model.ts
+++ b/src/main/webapp/app/home/generator/jhipster.configuration.model.ts
@@ -54,8 +54,8 @@ export class JHipsterConfigurationModel {
   constructor(data?: Partial<JHipsterConfigurationModel>) {
     if (data) {
       const dataCopy = { ...data };
-      dataCopy.testFrameworks = [...(data.testFrameworks || [])];
-      dataCopy.languages = [...(data.languages || [])];
+      dataCopy.testFrameworks = [...(data.testFrameworks ?? [])];
+      dataCopy.languages = [...(data.languages ?? [])];
       Object.assign(this, data);
     }
   }
diff --git a/src/main/webapp/app/home/git/git.component.ts b/src/main/webapp/app/home/git/git.component.ts
index 0ed08720..48118165 100644
--- a/src/main/webapp/app/home/git/git.component.ts
+++ b/src/main/webapp/app/home/git/git.component.ts
@@ -36,12 +36,12 @@ export class GitComponent implements OnInit {
   }
 
   ngOnInit(): void {
-    this.gitlabConfigured = this.gitConfig.gitlabConfigured || false;
-    this.githubConfigured = this.gitConfig.githubConfigured || false;
+    this.gitlabConfigured = this.gitConfig.gitlabConfigured ?? false;
+    this.githubConfigured = this.gitConfig.githubConfigured ?? false;
     this.gitConfigurationService.sharedData.subscribe((gitConfig: GitConfigurationModel) => {
       this.gitConfig = gitConfig;
-      this.gitlabConfigured = gitConfig.gitlabConfigured || false;
-      this.githubConfigured = gitConfig.githubConfigured || false;
+      this.gitlabConfigured = gitConfig.gitlabConfigured ?? false;
+      this.githubConfigured = gitConfig.githubConfigured ?? false;
     });
 
     this.gitConfig.availableGitProviders.forEach((provider: any) => {
diff --git a/src/main/webapp/app/home/jdl-metadata/jdl-studio.component.ts b/src/main/webapp/app/home/jdl-metadata/jdl-studio.component.ts
index 35d6a5cb..086eeba7 100644
--- a/src/main/webapp/app/home/jdl-metadata/jdl-studio.component.ts
+++ b/src/main/webapp/app/home/jdl-metadata/jdl-studio.component.ts
@@ -105,15 +105,15 @@ export class ApplyJdlStudioComponent implements OnInit, OnDestroy {
     private jdlService: JdlService
   ) {
     this.gitConfig = this.gitConfigurationService.gitConfig;
-    this.gitlabConfigured = this.gitConfig.gitlabConfigured || false;
-    this.githubConfigured = this.gitConfig.githubConfigured || false;
+    this.gitlabConfigured = this.gitConfig.gitlabConfigured ?? false;
+    this.githubConfigured = this.gitConfig.githubConfigured ?? false;
   }
 
   ngOnInit(): void {
     this.gitConfigurationService.sharedData.subscribe((gitConfig: GitConfigurationModel) => {
       this.gitConfig = gitConfig;
-      this.gitlabConfigured = gitConfig.gitlabConfigured || false;
-      this.githubConfigured = gitConfig.githubConfigured || false;
+      this.gitlabConfigured = gitConfig.gitlabConfigured ?? false;
+      this.githubConfigured = gitConfig.githubConfigured ?? false;
     });
 
     this.subscription = this.route.params.subscribe(params => {
diff --git a/src/main/webapp/app/shared/git-provider/git-provider.component.ts b/src/main/webapp/app/shared/git-provider/git-provider.component.ts
index 305008c9..21485fbc 100644
--- a/src/main/webapp/app/shared/git-provider/git-provider.component.ts
+++ b/src/main/webapp/app/shared/git-provider/git-provider.component.ts
@@ -145,7 +145,7 @@ export class JhiGitProviderComponent implements OnInit {
       this.data.selectedGitProvider = 'GitHub';
     }
 
-    this.refreshGitCompanyListByGitProvider(this.data.selectedGitProvider || '');
+    this.refreshGitCompanyListByGitProvider(this.data.selectedGitProvider ?? '');
   }
   refreshGitCompanyListByGitProvider(gitProvider: string): void {
     if (gitProvider.length === 0) {
diff --git a/src/main/webapp/app/shared/model/yo-rc.model.ts b/src/main/webapp/app/shared/model/yo-rc.model.ts
index 29a36e16..018dc89d 100644
--- a/src/main/webapp/app/shared/model/yo-rc.model.ts
+++ b/src/main/webapp/app/shared/model/yo-rc.model.ts
@@ -107,17 +107,17 @@ export class YoRC implements IYoRC {
     public hasCucumber?: boolean,
     public owner?: IGeneratorIdentity
   ) {
-    this.enableHibernateCache = this.enableHibernateCache || false;
-    this.websocket = this.websocket || false;
-    this.searchEngine = this.searchEngine || false;
-    this.messageBroker = this.messageBroker || false;
-    this.serviceDiscoveryType = this.serviceDiscoveryType || false;
-    this.enableSwaggerCodegen = this.enableSwaggerCodegen || false;
-    this.withAdminUi = this.withAdminUi || false;
-    this.useSass = this.useSass || false;
-    this.enableTranslation = this.enableTranslation || false;
-    this.hasProtractor = this.hasProtractor || false;
-    this.hasGatling = this.hasGatling || false;
-    this.hasCucumber = this.hasCucumber || false;
+    this.enableHibernateCache = this.enableHibernateCache ?? false;
+    this.websocket = this.websocket ?? false;
+    this.searchEngine = this.searchEngine ?? false;
+    this.messageBroker = this.messageBroker ?? false;
+    this.serviceDiscoveryType = this.serviceDiscoveryType ?? false;
+    this.enableSwaggerCodegen = this.enableSwaggerCodegen ?? false;
+    this.withAdminUi = this.withAdminUi ?? false;
+    this.useSass = this.useSass ?? false;
+    this.enableTranslation = this.enableTranslation ?? false;
+    this.hasProtractor = this.hasProtractor ?? false;
+    this.hasGatling = this.hasGatling ?? false;
+    this.hasCucumber = this.hasCucumber ?? false;
   }
 }