docs: add app check

Author: posva

docs/.vitepress/config.ts

@@ -234,6 +234,10 @@ function sidebarNuxt(): SidebarGroup {
         text: 'Authentication',
         link: '/nuxt/auth',
       },
+      {
+        text: 'App Check',
+        link: '/nuxt/app-check',
+      },
       {
         text: 'Server Side Rendering',
         link: '/nuxt/ssr',

docs/guide/app-check.md

@@ -1,6 +1,6 @@
 # Firebase App Check
 
-[Firebase App Check](https://firebase.google.com/docs/app-check) helps protect your API resources from abuse by preventing unauthorized clients from accessing your backend resources. It works with both Firebase services, Google Cloud services, and your own APIs to keep your resources safe.
+[Firebase App Check](https://firebase.google.com/docs/app-check#web) helps protect your API resources from abuse by preventing unauthorized clients from accessing your backend resources. It works with both Firebase services, Google Cloud services, and your own APIs to keep your resources safe.
 
 ## Installation
 
@@ -19,7 +19,7 @@ app.use(VueFire, {
 })
 ```
 
-In order to use App Check you need to enable it in the Firebase Console > App Check. You also need to setup [a reCAPTCHA provider](https://firebase.google.com/docs/app-check), then provide it in the `VueFireAppCheck` module:
+In order to use App Check you need to enable it in the Firebase Console > App Check. You also need to setup [a reCAPTCHA provider](https://firebase.google.com/docs/app-check#web), then provide it in the `VueFireAppCheck` module:
 
 ```ts{2,9}
 import { VueFire, VueFireAuth } from 'vuefire'

docs/nuxt/app-check.md

@@ -0,0 +1,24 @@
+# App Check
+
+Nuxt VueFire integrates with [Firebase App Check](https://firebase.google.com/docs/app-check#web) by specifying the `appCheck` option in `nuxt.config.ts`:
+
+```ts{4-10}
+export default defineNuxtConfig({
+  // ...
+  vuefire: {
+    appCheck: {
+      debug: process.env.NODE_ENV !== 'production',
+      isTokenAutoRefreshEnabled: true,
+      provider: 'ReCaptchaV3',
+      // Find the instructions in the Firebase documentation, link above
+      key: '...',
+    },
+  },
+})
+```
+
+You can find more information in the [VueFire App Check documentation](/guide/app-check).
+
+## Debug Tokens
+
+Instead of specifying `debug: true`, you can specify a debug token [using Environment variables](https://vuefire.vuejs.org/nuxt/environment-variables.html#AppCheck).

docs/nuxt/getting-started.md

@@ -84,7 +84,7 @@ echo service-account.json >> .gitignore
 
 ### Additional configuration
 
-If you are using the [Authentication](https://firebase.google.com/docs/auth) module or [AppCheck](https://firebase.google.com/docs/app-check), make sure to enable them as well:
+If you are using the [Authentication](https://firebase.google.com/docs/auth) module or [AppCheck](https://firebase.google.com/docs/app-check#web), make sure to enable them as well:
 
 ```ts{5,6-13}
 export default defineNuxtConfig({