install vue-i18n

.eslintrc.json

@@ -50,10 +50,6 @@
             "error",
             "unix"
         ],
-        "quotes": [
-            "error",
-            "single"
-        ],
         "semi": [
             "error",
             "never"

README.md

@@ -5,6 +5,7 @@
 [![vike][badge-vike-img]][badge-vike-href]
 [![vuetify][badge-vuetify-img]][badge-vuetify-href]
 [![pinia][badge-pinia-img]][badge-pinia-href]
+[![vue-i18n][badge-vue-i18n-img]][badge-vue-i18n-href]
 [![eslint][badge-eslint-img]][badge-eslint-href]
 [![vitest][badge-vitest-img]][badge-vitest-href]
 [![storybook][badge-storybook-img]][badge-storybook-href]
@@ -48,9 +49,9 @@ The following commands are available:
 - [x] storybook
 - [x] eslint
 - [x] vitest
+- [x] vue-i18n
 - [ ] figma
 - [ ] chromatic
-- [ ] localization?
 - [ ] documentation?
 - [ ] docker
 - [ ] github actions
@@ -87,6 +88,9 @@ See [vite-plugin-ssr-vuetify](https://github.com/brillout/vite-plugin-ssr-vuetif
 [badge-pinia-img]: https://img.shields.io/badge/dynamic/json?url=https%3A%2F%2Fraw.githubusercontent.com%2FIT4Change%2Fboilerplate-frontend%2Fmaster%2Fpackage.json&query=dependencies.pinia&label=pinia&color=green
 [badge-pinia-href]: https://pinia.vuejs.org/
 
+[badge-vue-i18n-img]: https://img.shields.io/badge/dynamic/json?url=https%3A%2F%2Fraw.githubusercontent.com%2FIT4Change%2Fboilerplate-frontend%2Fmaster%2Fpackage.json&query=dependencies.vue-i18n&label=vue-i18n&color=green
+[badge-vue-i18n-href]: https://vue-i18n.intlify.dev/
+
 [badge-eslint-img]: https://img.shields.io/badge/dynamic/json?url=https%3A%2F%2Fraw.githubusercontent.com%2FIT4Change%2Fboilerplate-frontend%2Fmaster%2Fpackage.json&query=devDependencies.eslint&label=eslint&color=yellow
 [badge-eslint-href]: https://eslint.org/
 

package-lock.json

@@ -28,6 +28,7 @@
         "vike": "^0.4.145",
         "vite": "^4.4.9",
         "vue": "^3.3.4",
+        "vue-i18n": "^9.7.0",
         "vuetify": "^3.4.0"
       },
       "devDependencies": {
@@ -2946,6 +2947,47 @@
       "integrity": "sha512-dvuCeX5fC9dXgJn9t+X5atfmgQAzUOWqS1254Gh0m6i8wKd10ebXkfNKiRK+1GWi/yTvvLDHpoxLr0xxxeslWw==",
       "dev": true
     },
+    "node_modules/@intlify/core-base": {
+      "version": "9.7.0",
+      "resolved": "https://registry.npmjs.org/@intlify/core-base/-/core-base-9.7.0.tgz",
+      "integrity": "sha512-1tBnfnCI23jXqGW15cagCjn2GgD487VST1dMG8P5LRzrSfx+kUzqFyTrjMNIwgq1tVaF4HnDpFMUuyrzTLKphw==",
+      "dependencies": {
+        "@intlify/message-compiler": "9.7.0",
+        "@intlify/shared": "9.7.0"
+      },
+      "engines": {
+        "node": ">= 16"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/kazupon"
+      }
+    },
+    "node_modules/@intlify/message-compiler": {
+      "version": "9.7.0",
+      "resolved": "https://registry.npmjs.org/@intlify/message-compiler/-/message-compiler-9.7.0.tgz",
+      "integrity": "sha512-/YdZCio2L2tCM5bZ2eMHbSEIQNPh1QqvZIOLI/yCVKXLscis7O0SsR2nmuU/DfCJ3iSeI8juw82C2wLvfsAeww==",
+      "dependencies": {
+        "@intlify/shared": "9.7.0",
+        "source-map-js": "^1.0.2"
+      },
+      "engines": {
+        "node": ">= 16"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/kazupon"
+      }
+    },
+    "node_modules/@intlify/shared": {
+      "version": "9.7.0",
+      "resolved": "https://registry.npmjs.org/@intlify/shared/-/shared-9.7.0.tgz",
+      "integrity": "sha512-PUkEuk//YKu4CHS5ah3mNa3XL/+TZj6rAY/6yYN+GCNFd2u+uWUkeuwE4Q6t8dydRWlErOePHHS0KyNoof/oBw==",
+      "engines": {
+        "node": ">= 16"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/kazupon"
+      }
+    },
     "node_modules/@isaacs/cliui": {
       "version": "8.0.2",
       "resolved": "https://registry.npmjs.org/@isaacs/cliui/-/cliui-8.0.2.tgz",
@@ -18177,6 +18219,25 @@
       "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==",
       "dev": true
     },
+    "node_modules/vue-i18n": {
+      "version": "9.7.0",
+      "resolved": "https://registry.npmjs.org/vue-i18n/-/vue-i18n-9.7.0.tgz",
+      "integrity": "sha512-8Z8kSz9U2juzuAf+6mjW1HTd5pIlYuFJZkC+HvYOglFdpzwc2rTUGjxKwN8xGdtGur1MFnyJ44TSr+TksJtY8A==",
+      "dependencies": {
+        "@intlify/core-base": "9.7.0",
+        "@intlify/shared": "9.7.0",
+        "@vue/devtools-api": "^6.5.0"
+      },
+      "engines": {
+        "node": ">= 16"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/kazupon"
+      },
+      "peerDependencies": {
+        "vue": "^3.0.0"
+      }
+    },
     "node_modules/vue-inbrowser-compiler-independent-utils": {
       "version": "4.71.1",
       "resolved": "https://registry.npmjs.org/vue-inbrowser-compiler-independent-utils/-/vue-inbrowser-compiler-independent-utils-4.71.1.tgz",

package.json

@@ -18,7 +18,8 @@
     "pinia",
     "storybook",
     "eslint",
-    "vitest"
+    "vitest",
+    "vue-i18n"
   ],
   "author": "Ulf Gebhardt",
   "license": "Apache-2.0",
@@ -60,6 +61,7 @@
     "vike": "^0.4.145",
     "vite": "^4.4.9",
     "vue": "^3.3.4",
+    "vue-i18n": "^9.7.0",
     "vuetify": "^3.4.0"
   },
   "devDependencies": {

renderer/app.ts

@@ -2,7 +2,8 @@ import { createSSRApp, defineComponent, h } from 'vue'
 import PageShell from './PageShell.vue'
 import { setPageContext } from './usePageContext'
 import type { Component, PageContext, PageProps } from './types'
-import vuetify from './vuetify'
+import i18n from './i18n'
+import CreateVuetify from './vuetify'
 import { createPinia } from 'pinia'
 
 export { createApp }
@@ -25,7 +26,8 @@ function createApp(Page: Component, pageProps: PageProps | undefined, pageContex
   const pinia = createPinia()
   const app = createSSRApp(PageWithLayout)
   app.use(pinia)
-  app.use(vuetify)
+  app.use(i18n)
+  app.use(CreateVuetify(i18n))
 
   // Make pageContext available from any Vue component
   setPageContext(app, pageContext)

renderer/i18n.ts

@@ -0,0 +1,10 @@
+import { createI18n } from 'vue-i18n'
+import de from '../src/locales/de'
+import en from '../src/locales/en'
+
+export default createI18n({
+  legacy: false, // Vuetify does not support the legacy mode of vue-i18n
+  locale: 'de',
+  fallbackLocale: 'en',
+  messages: { de, en },
+})

renderer/vuetify.ts

@@ -4,7 +4,16 @@ import { createVuetify } from 'vuetify'
 import * as components from 'vuetify/lib/components/index.mjs'
 import * as directives from 'vuetify/lib/directives/index.mjs'
 
-export default createVuetify({
-  components,
-  directives,
-})
+import { createVueI18nAdapter } from 'vuetify/locale/adapters/vue-i18n'
+
+import { useI18n } from 'vue-i18n'
+
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+export default (i18n: any) =>
+  createVuetify({
+    locale: {
+      adapter: createVueI18nAdapter({ i18n, useI18n }),
+    },
+    components,
+    directives,
+  })

src/locales/de.ts

@@ -0,0 +1,6 @@
+import { de as $vuetify } from 'vuetify/locale'
+
+export default {
+  counter: 'Zähler',
+  $vuetify,
+}

src/locales/en.ts

@@ -0,0 +1,6 @@
+import { en as $vuetify } from 'vuetify/locale'
+
+export default {
+  counter: 'Counter',
+  $vuetify,
+}

src/pages/index/ClickCounter.spec.ts

@@ -7,6 +7,6 @@ describe('ClickCounter', () => {
 
   it('renders Button with a Counter of 0', () => {
     expect(wrapper.find('v-btn').exists()).toBe(true)
-    expect(wrapper.text()).toBe('Counter 0')
+    expect(wrapper.text()).toBe("$t('counter') 0")
   })
 })

src/pages/index/ClickCounter.vue

@@ -1,5 +1,5 @@
 <template>
-  <v-btn elevation="2" @click="state.count++">Counter {{ state.count }}</v-btn>
+  <v-btn elevation="2" @click="state.count++">{{ $t('counter') }} {{ state.count }}</v-btn>
 </template>
 
 <script lang="ts" setup>

tests/unit.setup.ts

@@ -0,0 +1,6 @@
+// tests/unit.setup.ts
+import { config } from '@vue/test-utils'
+
+config.global.mocks = {
+  $t: (tKey: string) => "$t('" + tKey + "')", // just return translation key
+}

vitest.config.ts

@@ -5,6 +5,7 @@ export default defineConfig({
   test: {
     globals: true,
     environment: 'jsdom',
+    setupFiles: ['tests/unit.setup.ts'],
     /*
     server: {
       deps: {