[WIP]: Add Firebase integration

examples/react/todo/firebase.json

@@ -0,0 +1,12 @@
+{
+  "emulators": {
+    "firestore": {
+      "port": 8080
+    },
+    "ui": {
+      "enabled": true,
+      "port": 4002
+    },
+    "singleProjectMode": true
+  }
+}

examples/react/todo/package.json

@@ -4,6 +4,7 @@
   "version": "0.0.38",
   "dependencies": {
     "@tanstack/electric-db-collection": "^0.0.14",
+    "@tanstack/firebase-db-collection": "file:../../../packages/firebase-db-collection",
     "@tanstack/query-core": "^5.75.7",
     "@tanstack/query-db-collection": "^0.0.14",
     "@tanstack/react-db": "^0.0.32",
@@ -14,6 +15,7 @@
     "drizzle-orm": "^0.40.1",
     "drizzle-zod": "^0.7.0",
     "express": "^4.19.2",
+    "firebase": "^11.2.0",
     "postgres": "^3.4.7",
     "react": "^19.1.0",
     "react-dom": "^19.1.0",
@@ -39,6 +41,7 @@
     "eslint": "^9.22.0",
     "eslint-plugin-react-hooks": "^5.2.0",
     "eslint-plugin-react-refresh": "^0.4.5",
+    "firebase-tools": "^13.31.0",
     "pg": "^8.14.1",
     "tsx": "^4.6.2",
     "typescript": "^5.8.2",
@@ -50,7 +53,8 @@
     "db:generate": "drizzle-kit generate",
     "db:push": "tsx scripts/migrate.ts",
     "db:studio": "drizzle-kit studio",
-    "dev": "docker compose up -d && vite dev",
+    "dev": "docker compose up -d && firebase emulators:start --only firestore & vite dev",
+    "dev:no-emulator": "docker compose up -d && vite dev",
     "lint": "eslint . --fix",
     "preview": "vite preview"
   },

examples/react/todo/src/lib/collections.ts

@@ -2,8 +2,11 @@ import { createCollection } from "@tanstack/react-db"
 import { electricCollectionOptions } from "@tanstack/electric-db-collection"
 import { queryCollectionOptions } from "@tanstack/query-db-collection"
 import { trailBaseCollectionOptions } from "@tanstack/trailbase-db-collection"
+import { firebaseCollectionOptions } from "@tanstack/firebase-db-collection"
 import { QueryClient } from "@tanstack/query-core"
 import { initClient } from "trailbase"
+import { initializeApp } from "firebase/app"
+import { connectFirestoreEmulator, getFirestore } from "firebase/firestore"
 import { selectConfigSchema, selectTodoSchema } from "../db/validation"
 import { api } from "./api"
 import type { SelectConfig, SelectTodo } from "../db/validation"
@@ -14,6 +17,17 @@ const queryClient = new QueryClient()
 // Create a TrailBase client.
 const trailBaseClient = initClient(`http://localhost:4000`)
 
+// Initialize Firebase
+const firebaseApp = initializeApp({
+  projectId: `tanstack-db-demo`,
+})
+const firestore = getFirestore(firebaseApp)
+
+// Connect to emulator in development
+if (import.meta.env.DEV) {
+  connectFirestoreEmulator(firestore, `localhost`, 8080)
+}
+
 // Electric Todo Collection
 export const electricTodoCollection = createCollection(
   electricCollectionOptions({
@@ -228,3 +242,39 @@ export const trailBaseConfigCollection = createCollection(
     },
   })
 )
+
+// Firebase Todo Collection
+export const firebaseTodoCollection = createCollection(
+  firebaseCollectionOptions({
+    id: `todos`,
+    firestore,
+    collectionName: `todos`,
+    getKey: (item) => item.id,
+    schema: selectTodoSchema,
+    rowUpdateMode: `partial`,
+    parse: {
+      created_at: (timestamp: any) =>
+        timestamp?.toDate?.() || new Date(timestamp),
+      updated_at: (timestamp: any) =>
+        timestamp?.toDate?.() || new Date(timestamp),
+    },
+  })
+)
+
+// Firebase Config Collection
+export const firebaseConfigCollection = createCollection(
+  firebaseCollectionOptions({
+    id: `config`,
+    firestore,
+    collectionName: `config`,
+    getKey: (item) => item.id,
+    schema: selectConfigSchema,
+    rowUpdateMode: `partial`,
+    parse: {
+      created_at: (timestamp: any) =>
+        timestamp?.toDate?.() || new Date(timestamp),
+      updated_at: (timestamp: any) =>
+        timestamp?.toDate?.() || new Date(timestamp),
+    },
+  })
+)

examples/react/todo/src/routeTree.gen.ts

@@ -13,6 +13,7 @@ import { createServerRootRoute } from '@tanstack/react-start/server'
 import { Route as rootRouteImport } from './routes/__root'
 import { Route as TrailbaseRouteImport } from './routes/trailbase'
 import { Route as QueryRouteImport } from './routes/query'
+import { Route as FirebaseRouteImport } from './routes/firebase'
 import { Route as ElectricRouteImport } from './routes/electric'
 import { Route as IndexRouteImport } from './routes/index'
 import { ServerRoute as ApiTodosServerRouteImport } from './routes/api/todos'
@@ -32,6 +33,11 @@ const QueryRoute = QueryRouteImport.update({
   path: '/query',
   getParentRoute: () => rootRouteImport,
 } as any)
+const FirebaseRoute = FirebaseRouteImport.update({
+  id: '/firebase',
+  path: '/firebase',
+  getParentRoute: () => rootRouteImport,
+} as any)
 const ElectricRoute = ElectricRouteImport.update({
   id: '/electric',
   path: '/electric',
@@ -66,33 +72,37 @@ const ApiConfigIdServerRoute = ApiConfigIdServerRouteImport.update({
 export interface FileRoutesByFullPath {
   '/': typeof IndexRoute
   '/electric': typeof ElectricRoute
+  '/firebase': typeof FirebaseRoute
   '/query': typeof QueryRoute
   '/trailbase': typeof TrailbaseRoute
 }
 export interface FileRoutesByTo {
   '/': typeof IndexRoute
   '/electric': typeof ElectricRoute
+  '/firebase': typeof FirebaseRoute
   '/query': typeof QueryRoute
   '/trailbase': typeof TrailbaseRoute
 }
 export interface FileRoutesById {
   __root__: typeof rootRouteImport
   '/': typeof IndexRoute
   '/electric': typeof ElectricRoute
+  '/firebase': typeof FirebaseRoute
   '/query': typeof QueryRoute
   '/trailbase': typeof TrailbaseRoute
 }
 export interface FileRouteTypes {
   fileRoutesByFullPath: FileRoutesByFullPath
-  fullPaths: '/' | '/electric' | '/query' | '/trailbase'
+  fullPaths: '/' | '/electric' | '/firebase' | '/query' | '/trailbase'
   fileRoutesByTo: FileRoutesByTo
-  to: '/' | '/electric' | '/query' | '/trailbase'
-  id: '__root__' | '/' | '/electric' | '/query' | '/trailbase'
+  to: '/' | '/electric' | '/firebase' | '/query' | '/trailbase'
+  id: '__root__' | '/' | '/electric' | '/firebase' | '/query' | '/trailbase'
   fileRoutesById: FileRoutesById
 }
 export interface RootRouteChildren {
   IndexRoute: typeof IndexRoute
   ElectricRoute: typeof ElectricRoute
+  FirebaseRoute: typeof FirebaseRoute
   QueryRoute: typeof QueryRoute
   TrailbaseRoute: typeof TrailbaseRoute
 }
@@ -149,6 +159,13 @@ declare module '@tanstack/react-router' {
       preLoaderRoute: typeof QueryRouteImport
       parentRoute: typeof rootRouteImport
     }
+    '/firebase': {
+      id: '/firebase'
+      path: '/firebase'
+      fullPath: '/firebase'
+      preLoaderRoute: typeof FirebaseRouteImport
+      parentRoute: typeof rootRouteImport
+    }
     '/electric': {
       id: '/electric'
       path: '/electric'
@@ -225,6 +242,7 @@ const ApiTodosServerRouteWithChildren = ApiTodosServerRoute._addFileChildren(
 const rootRouteChildren: RootRouteChildren = {
   IndexRoute: IndexRoute,
   ElectricRoute: ElectricRoute,
+  FirebaseRoute: FirebaseRoute,
   QueryRoute: QueryRoute,
   TrailbaseRoute: TrailbaseRoute,
 }

examples/react/todo/src/routes/firebase.tsx

@@ -0,0 +1,20 @@
+import { createFileRoute } from "@tanstack/react-router"
+import { TodoApp } from "../components/TodoApp"
+import {
+  firebaseTodoCollection,
+  firebaseConfigCollection,
+} from "../lib/collections"
+
+export const Route = createFileRoute("/firebase")({
+  component: Firebase,
+})
+
+function Firebase() {
+  return (
+    <TodoApp
+      todoCollection={firebaseTodoCollection}
+      configCollection={firebaseConfigCollection}
+      type="Firebase"
+    />
+  )
+}

examples/react/todo/src/routes/index.tsx

@@ -42,6 +42,14 @@ function HomePage() {
               </div>
             </button>
           </Link>
+          <Link to="/firebase" className="block w-full">
+            <button className="w-full px-6 py-4 bg-orange-500 text-white rounded-lg hover:bg-orange-600 transition-colors text-left">
+              <div className="font-semibold">Firebase Collections</div>
+              <div className="text-sm opacity-90 mt-1">
+                Real-time sync with Firestore
+              </div>
+            </button>
+          </Link>
         </div>
 
         <div className="mt-8 text-xs text-center text-gray-500">