use typed translation on react i18next on each context

src/main/java/tech/jhipster/lite/generator/client/react/i18n/domain/ReactI18nModuleFactory.java

@@ -1,6 +1,5 @@
 package tech.jhipster.lite.generator.client.react.i18n.domain;
 
-import static tech.jhipster.lite.generator.typescript.common.domain.VitestShortcuts.vitestCoverageExclusion;
 import static tech.jhipster.lite.module.domain.JHipsterModule.LINE_BREAK;
 import static tech.jhipster.lite.module.domain.JHipsterModule.append;
 import static tech.jhipster.lite.module.domain.JHipsterModule.from;
@@ -9,6 +8,7 @@
 import static tech.jhipster.lite.module.domain.JHipsterModule.moduleBuilder;
 import static tech.jhipster.lite.module.domain.JHipsterModule.packageName;
 import static tech.jhipster.lite.module.domain.JHipsterModule.path;
+import static tech.jhipster.lite.module.domain.JHipsterModule.text;
 import static tech.jhipster.lite.module.domain.JHipsterModule.to;
 import static tech.jhipster.lite.module.domain.npm.JHLiteNpmVersionSource.COMMON;
 import static tech.jhipster.lite.module.domain.npm.JHLiteNpmVersionSource.REACT;
@@ -20,12 +20,12 @@
 
 public class ReactI18nModuleFactory {
 
-  private static final JHipsterSource APP_SOURCE = from("client/react/i18n/src/main/webapp/app");
-  private static final JHipsterSource ASSETS_FR_SOURCE = from("client/react/i18n/src/main/webapp/assets/locales/fr");
-  private static final JHipsterSource ASSETS_EN_SOURCE = from("client/react/i18n/src/main/webapp/assets/locales/en");
+  private static final JHipsterSource APP_SOURCE = from("client/common/i18n");
+  private static final JHipsterSource HOME_CONTEXT_SOURCE = from("client/common/i18n/app");
+  private static final JHipsterSource ASSETS_SOURCE = from("client/common/i18n/app/locales");
 
-  private static final String INDEX = "src/main/webapp/";
-  private static final String INDEX_TEST = "src/test/webapp/unit/home/infrastructure/primary/";
+  private static final String INDEX = "src/main/webapp/app/";
+  private static final String INDEX_TEST = "src/test/";
 
   public JHipsterModule buildModule(JHipsterModuleProperties properties) {
     Assert.notNull("properties", properties);
@@ -39,27 +39,36 @@ public JHipsterModule buildModule(JHipsterModuleProperties properties) {
       .addDependency(packageName("react-i18next"), REACT)
       .and()
       .files()
-      .batch(APP_SOURCE, to(INDEX + "/app"))
+      .batch(APP_SOURCE, to(INDEX))
         .addFile("i18n.ts")
+        .addFile("Translations.ts")
         .and()
-      .batch(ASSETS_EN_SOURCE, to(INDEX + "assets/locales/en/"))
-        .addFile("translation.json")
+      .batch(HOME_CONTEXT_SOURCE, to(INDEX + "home/"))
+        .addFile("HomeTranslations.ts")
         .and()
-      .batch(ASSETS_FR_SOURCE, to(INDEX + "assets/locales/fr/"))
-        .addFile("translation.json")
+      .batch(ASSETS_SOURCE, to(INDEX + "home/locales/"))
+        .addFile("en.ts")
+        .addFile("fr.ts")
+        .and()
+      .batch(APP_SOURCE, to(INDEX_TEST + "webapp/unit"))
+        .addFile("i18n.spec.ts")
         .and()
       .and()
       .mandatoryReplacements()
-        .in(path(INDEX + "app/home/infrastructure/primary/HomePage.tsx"))
+        .in(path(INDEX + "i18n.ts"))
+          .add(lineAfterText("import LanguageDetector from 'i18next-browser-languagedetector';"), "import { initReactI18next } from 'react-i18next';")
+          .add(text(".use(LanguageDetector)"), ".use(initReactI18next).use(LanguageDetector)")
+        .and()
+        .in(path(INDEX + "home/infrastructure/primary/HomePage.tsx"))
           .add(lineAfterText("import ReactLogo from '@assets/ReactLogo.png';"), "import { useTranslation } from 'react-i18next';")
           .add(lineBeforeText("return ("), properties.indentation().times(1) + "const { t } = useTranslation();" + LINE_BREAK)
           .add(lineAfterText("</h1>"), LINE_BREAK +
-            properties.indentation().times(4) + "<p>{t('translationEnabled')}</p>")
+            properties.indentation().times(4) + "<p>{t('home.translationEnabled')}</p>")
           .and()
-        .in(path(INDEX + "app/index.tsx"))
+        .in(path(INDEX + "index.tsx"))
           .add(lineAfterText("import './index.css';"), "import './i18n';" + LINE_BREAK)
           .and()
-        .in(path(INDEX_TEST + "HomePage.spec.tsx"))
+        .in(path(INDEX_TEST + "webapp/unit/home/infrastructure/primary/HomePage.spec.tsx"))
           .add(append(), LINE_BREAK + """
            describe('Home I18next', () => {
              it('renders with translation', () => {
@@ -77,7 +86,6 @@ public JHipsterModule buildModule(JHipsterModuleProperties properties) {
            });""" )
         .and()
       .and()
-      .apply(vitestCoverageExclusion("src/main/webapp/app/i18n.ts"))
       .build();
     //@formatter:off
   }

src/main/resources/generator/client/common/i18n/i18n.spec.ts

@@ -1,13 +1,13 @@
 import i18n from '@/i18n';
-import { mergeTranslations } from '@/Translations';
+import { mergeTranslations, type Translations } from '@/Translations';
 
 describe('i18n configuration', () => {
   it('loads en translation', () => {
-    expect(i18n.getResourceBundle('en', '')['home']['translationEnabled']).toBe('Internationalization enabled');
+    expect((i18n.getResourceBundle('en', '') as Translations).home.translationEnabled).toBe('Internationalization enabled');
   });
 
   it('loads fr translation', () => {
-    expect(i18n.getResourceBundle('fr', '')['home']['translationEnabled']).toBe('Internationalisation activée');
+    expect((i18n.getResourceBundle('fr', '') as Translations).home.translationEnabled).toBe('Internationalisation activée');
   });
 
   describe('mergeTranslations function', () => {

src/main/resources/generator/client/common/i18n/i18n.ts

@@ -3,7 +3,7 @@ import LanguageDetector from 'i18next-browser-languagedetector';
 import { homeTranslations } from './home/HomeTranslations';
 import { toTranslationResources } from './Translations';
 
-i18n.use(LanguageDetector).init({
+void i18n.use(LanguageDetector).init({
   fallbackLng: 'en',
   debug: false,
   interpolation: {

src/test/features/client/react-i18n.feature

@@ -8,7 +8,6 @@ Feature: React i18n
       | react-i18next |
     Then I should have files in "src/main/webapp/app"
       | i18n.ts |
-    And I should have files in "src/main/webapp/assets/locales/en"
-      | translation.json |
-    And I should have files in "src/main/webapp/assets/locales/fr"
-      | translation.json |
+    And I should have files in "src/main/webapp/app/home/locales"
+      | en.ts |
+      | fr.ts |

src/test/java/tech/jhipster/lite/generator/client/react/i18n/domain/ReactI18nModuleFactoryTest.java

@@ -30,21 +30,22 @@ void shouldBuildI18nModule() {
       .containing(nodeDependency("i18next-http-backend"))
       .containing(nodeDependency("react-i18next"))
       .and()
-      .hasFiles("src/main/webapp/app/i18n.ts")
+      .hasFiles("src/test/webapp/unit/i18n.spec.ts", "src/main/webapp/app/Translations.ts")
+      .hasFile("src/main/webapp/app/i18n.ts")
+      .containing("import { initReactI18next } from 'react-i18next';")
+      .containing("use(initReactI18next)")
+      .and()
       .hasFile("src/main/webapp/app/index.tsx")
       .containing("import './i18n'")
       .and()
       .hasFile(HOME_PAGE_TSX)
-      .containing("import { useTranslation } from 'react-i18next")
-      .containing("const { t } = useTranslation();")
-      .containing("{t('translationEnabled')}")
+      .matchingSavedSnapshot()
       .and()
-      .hasPrefixedFiles("src/main/webapp/assets/locales/", "en/translation.json", "fr/translation.json")
-      .hasFile("src/test/webapp/unit/home/infrastructure/primary/HomePage.spec.tsx")
-      .containing("describe('Home I18next', () => {")
+      .hasFile("src/main/webapp/app/home/HomeTranslations.ts")
       .and()
-      .hasFile("vitest.config.ts")
-      .containing("'src/main/webapp/app/i18n.ts',");
+      .hasPrefixedFiles("src/main/webapp/app/home/locales", "en.ts", "fr.ts")
+      .hasFile("src/test/webapp/unit/home/infrastructure/primary/HomePage.spec.tsx")
+      .containing("describe('Home I18next', () => {");
   }
 
   private ModuleFile app() {

src/test/resources/tech/jhipster/lite/generator/client/react/i18n/domain/ReactI18nModuleFactoryTest.shouldBuildI18nModule.HomePage.tsx.approved.txt

@@ -0,0 +1,44 @@
+import './HomePage.css';
+
+import JHipsterLiteNeonBlue from '@assets/JHipster-Lite-neon-blue.png';
+import ReactLogo from '@assets/ReactLogo.png';
+import { useTranslation } from 'react-i18next';
+
+function HomePage() {
+  const { t } = useTranslation();
+
+  return (
+    <div>
+      <div id="app">
+        <img alt="React logo" src={ReactLogo} />
+        <br />
+        <img alt="JHipster logo" src={JHipsterLiteNeonBlue} />
+        <h1>React + TypeScript + Vite</h1>
+
+        <p>{t('home.translationEnabled')}</p>
+        <p>
+          Recommended IDE setup:&nbsp;
+          <a href="https://code.visualstudio.com/" target="_blank" rel="noopener noreferrer">
+            VSCode
+          </a>
+        </p>
+
+        <p>
+          <a href="https://vitejs.dev/guide/features.html" target="_blank" rel="noopener noreferrer">
+            Vite Documentation
+          </a>
+          <span>&nbsp;|&nbsp;</span>
+          <a href="https://reactjs.org/docs/" target="_blank" rel="noopener noreferrer">
+            React Documentation
+          </a>
+        </p>
+
+        <p>
+          Edit&nbsp;<code>src/main/webapp/app/common/primary/app/App.tsx</code> to test hot module replacement.
+        </p>
+      </div>
+    </div>
+  );
+}
+
+export default HomePage;