diff --git a/.github/workflows/test_dart.yml b/.github/workflows/test_dart.yml
index 751df78226..5e71f4e4f0 100644
--- a/.github/workflows/test_dart.yml
+++ b/.github/workflows/test_dart.yml
@@ -49,6 +49,15 @@ jobs:
           for dir in $(find Dart -name pubspec.yaml -exec dirname {} \;); do
             echo "::group::Testing $dir"
             cd "$dir"
+
+            # Check if this is a Flutter project
+            if grep -q "sdk: flutter" pubspec.yaml; then
+              echo "Skipping Flutter project as only Dart SDK is available in CI"
+              cd - > /dev/null
+              echo "::endgroup::"
+              continue
+            fi
+
             dart pub get
             dart format --set-exit-if-changed .
             dart analyze .
diff --git a/Dart/codelab-dart-functions/.gitignore b/Dart/codelab-dart-functions/.gitignore
new file mode 100644
index 0000000000..3820a95c65
--- /dev/null
+++ b/Dart/codelab-dart-functions/.gitignore
@@ -0,0 +1,45 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.build/
+.buildlog/
+.history
+.svn/
+.swiftpm/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins-dependencies
+.pub-cache/
+.pub/
+/build/
+/coverage/
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release
diff --git a/Dart/codelab-dart-functions/README.md b/Dart/codelab-dart-functions/README.md
new file mode 100644
index 0000000000..0eefb134e5
--- /dev/null
+++ b/Dart/codelab-dart-functions/README.md
@@ -0,0 +1,14 @@
+# Codelab Dart Functions
+
+This project contains the source code for the "Deploy Dart on Firebase Functions" codelab.
+
+See [the codelab](https://codelabs.developers.google.com/deploy-dart-on-firebase-functions) for full instructions.
+
+## Running locally
+
+This uses the Firebase emulator suite to test without deploying.
+
+1. Ensure Firebase CLI is installed.
+2. Initialize emulators in the root of the project: `firebase init emulators`
+3. Start the emulators: `firebase emulators:start`
+4. Run the flutter application `flutter run`.
diff --git a/Dart/codelab-dart-functions/analysis_options.yaml b/Dart/codelab-dart-functions/analysis_options.yaml
new file mode 100644
index 0000000000..0d2902135c
--- /dev/null
+++ b/Dart/codelab-dart-functions/analysis_options.yaml
@@ -0,0 +1,28 @@
+# This file configures the analyzer, which statically analyzes Dart code to
+# check for errors, warnings, and lints.
+#
+# The issues identified by the analyzer are surfaced in the UI of Dart-enabled
+# IDEs (https://dart.dev/tools#ides-and-editors). The analyzer can also be
+# invoked from the command line by running `flutter analyze`.
+
+# The following line activates a set of recommended lints for Flutter apps,
+# packages, and plugins designed to encourage good coding practices.
+include: package:flutter_lints/flutter.yaml
+
+linter:
+  # The lint rules applied to this project can be customized in the
+  # section below to disable rules from the `package:flutter_lints/flutter.yaml`
+  # included above or to enable additional rules. A list of all available lints
+  # and their documentation is published at https://dart.dev/lints.
+  #
+  # Instead of disabling a lint rule for the entire project in the
+  # section below, it can also be suppressed for a single line of code
+  # or a specific dart file by using the `// ignore: name_of_lint` and
+  # `// ignore_for_file: name_of_lint` syntax on the line or in the file
+  # producing the lint.
+  rules:
+    # avoid_print: false  # Uncomment to disable the `avoid_print` rule
+    # prefer_single_quotes: true  # Uncomment to enable the `prefer_single_quotes` rule
+
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options
diff --git a/Dart/codelab-dart-functions/firebase.json b/Dart/codelab-dart-functions/firebase.json
new file mode 100644
index 0000000000..d75438d1be
--- /dev/null
+++ b/Dart/codelab-dart-functions/firebase.json
@@ -0,0 +1,19 @@
+{
+  "functions": [
+    {
+      "source": "functions",
+      "codebase": "dart-codelab-dart-functions",
+      "ignore": [
+        "node_modules",
+        ".git",
+        "firebase-debug.log",
+        "firebase-debug.*.log",
+        "*.local"
+      ],
+      "predeploy": [
+        "dart pub get --directory=\"$RESOURCE_DIR\"",
+        "dart run build_runner build --delete-conflicting-outputs --directory=\"$RESOURCE_DIR\""
+      ]
+    }
+  ]
+}
diff --git a/Dart/codelab-dart-functions/functions/analysis_options.yaml b/Dart/codelab-dart-functions/functions/analysis_options.yaml
new file mode 100644
index 0000000000..572dd239d0
--- /dev/null
+++ b/Dart/codelab-dart-functions/functions/analysis_options.yaml
@@ -0,0 +1 @@
+include: package:lints/recommended.yaml
diff --git a/Dart/codelab-dart-functions/functions/bin/server.dart b/Dart/codelab-dart-functions/functions/bin/server.dart
new file mode 100644
index 0000000000..0fc7e1f70c
--- /dev/null
+++ b/Dart/codelab-dart-functions/functions/bin/server.dart
@@ -0,0 +1,68 @@
+import 'dart:convert';
+import 'package:firebase_functions/firebase_functions.dart';
+import 'package:google_cloud_firestore/google_cloud_firestore.dart'
+    show FieldValue;
+import 'package:shared/shared.dart';
+
+void main(List<String> args) async {
+  await fireUp(args, (firebase) {
+    // Listen for calls to the http request and name defined in the shared package.
+    firebase.https.onRequest(name: incrementCallable, (request) async {
+      // In a production app, verify the user with request.auth?.uid here.
+      // ignore: avoid_print
+      print('Incrementing counter on the server...');
+
+      // Get firestore database instance
+      final firestore = firebase.adminApp.firestore();
+
+      // Get a reference to the counter document
+      final counterDoc = firestore.collection('counters').doc('global');
+
+      // Get the current snapshot for the count data
+      final snapshot = await counterDoc.get();
+
+      // Increment response we will send back
+      IncrementResponse incrementResponse;
+
+      // Check for the current count and if the snapshot exists
+      if (snapshot.data() case {'count': int value} when snapshot.exists) {
+        if (request.method == 'GET') {
+          // Get the current result
+          incrementResponse = IncrementResponse(
+            success: true,
+            message: 'Read-only sync complete',
+            newCount: value,
+          );
+        } else if (request.method == 'POST') {
+          // Increment count by one
+          final step = request.url.queryParameters['step'] as int? ?? 1;
+          await counterDoc.update({'count': FieldValue.increment(step)});
+          incrementResponse = IncrementResponse(
+            success: true,
+            message: 'Atomic increment complete',
+            newCount: value + step,
+          );
+        } else {
+          throw FailedPreconditionError(
+            'only GET and POST requests are allowed',
+          );
+        }
+      } else {
+        // Create a new document with a count of 1
+        await counterDoc.set({'count': 1});
+        incrementResponse = const IncrementResponse(
+          success: true,
+          message: 'Cloud-sync complete',
+          newCount: 1,
+        );
+      }
+
+      // Return the response as JSON
+      return Response(
+        200,
+        body: jsonEncode(incrementResponse.toJson()),
+        headers: {'Content-Type': 'application/json'},
+      );
+    });
+  });
+}
diff --git a/Dart/codelab-dart-functions/functions/build.yaml b/Dart/codelab-dart-functions/functions/build.yaml
new file mode 100644
index 0000000000..8eb7eff7be
--- /dev/null
+++ b/Dart/codelab-dart-functions/functions/build.yaml
@@ -0,0 +1,5 @@
+targets:
+  $default:
+    sources:
+      - "bin/**"
+      - "lib/**"
diff --git a/Dart/codelab-dart-functions/functions/pubspec.lock b/Dart/codelab-dart-functions/functions/pubspec.lock
new file mode 100644
index 0000000000..4d6b441d1f
--- /dev/null
+++ b/Dart/codelab-dart-functions/functions/pubspec.lock
@@ -0,0 +1,452 @@
+# Generated by pub
+# See https://dart.dev/tools/pub/glossary#lockfile
+packages:
+  _discoveryapis_commons:
+    dependency: transitive
+    description:
+      name: _discoveryapis_commons
+      sha256: "113c4100b90a5b70a983541782431b82168b3cae166ab130649c36eb3559d498"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.7"
+  _fe_analyzer_shared:
+    dependency: transitive
+    description:
+      name: _fe_analyzer_shared
+      sha256: a49d6cf99e8d8e7a8e93668d09ced0bbdb954d0b4fccc2f5f9241c6b87fad95c
+      url: "https://pub.dev"
+    source: hosted
+    version: "99.0.0"
+  analyzer:
+    dependency: transitive
+    description:
+      name: analyzer
+      sha256: "663efa951fb8a45e06f491223a604c93820598f20e6a99c25617a1576065e8b7"
+      url: "https://pub.dev"
+    source: hosted
+    version: "12.1.0"
+  args:
+    dependency: transitive
+    description:
+      name: args
+      sha256: d0481093c50b1da8910eb0bb301626d4d8eb7284aa739614d2b394ee09e3ea04
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.7.0"
+  asn1lib:
+    dependency: transitive
+    description:
+      name: asn1lib
+      sha256: "9a8f69025044eb466b9b60ef3bc3ac99b4dc6c158ae9c56d25eeccf5bc56d024"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.6.5"
+  async:
+    dependency: transitive
+    description:
+      name: async
+      sha256: e2eb0491ba5ddb6177742d2da23904574082139b07c1e33b8503b9f46f3e1a37
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.13.1"
+  build:
+    dependency: transitive
+    description:
+      name: build
+      sha256: aadd943f4f8cc946882c954c187e6115a84c98c81ad1d9c6cbf0895a8c85da9c
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.5"
+  clock:
+    dependency: transitive
+    description:
+      name: clock
+      sha256: fddb70d9b5277016c77a80201021d40a2247104d9f4aa7bab7157b7e3f05b84b
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.2"
+  collection:
+    dependency: transitive
+    description:
+      name: collection
+      sha256: "2f5709ae4d3d59dd8f7cd309b4e023046b57d8a6c82130785d2b0e5868084e76"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.19.1"
+  convert:
+    dependency: transitive
+    description:
+      name: convert
+      sha256: b30acd5944035672bc15c6b7a8b47d773e41e2f17de064350988c5d02adb1c68
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.2"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      sha256: c8ea0233063ba03258fbcf2ca4d6dadfefe14f02fab57702265467a19f27fadf
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.7"
+  dart_jsonwebtoken:
+    dependency: transitive
+    description:
+      name: dart_jsonwebtoken
+      sha256: cb79ed79baa02b4f59a597bf365873cbd83f9bb15273d63f7803802d21717c7d
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.4.0"
+  dart_style:
+    dependency: transitive
+    description:
+      name: dart_style
+      sha256: a4c1ccfee44c7e75ed80484071a5c142a385345e658fd8bd7c4b5c97e7198f98
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.8"
+  equatable:
+    dependency: transitive
+    description:
+      name: equatable
+      sha256: "3e0141505477fd8ad55d6eb4e7776d3fe8430be8e497ccb1521370c3f21a3e2b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.8"
+  ffi:
+    dependency: transitive
+    description:
+      name: ffi
+      sha256: "6d7fd89431262d8f3125e81b50d3847a091d846eafcd4fdb88dd06f36d705a45"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.0"
+  file:
+    dependency: transitive
+    description:
+      name: file
+      sha256: a3b4f84adafef897088c160faf7dfffb7696046cb13ae90b508c2cbc95d3b8d4
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.1"
+  firebase_admin_sdk:
+    dependency: transitive
+    description:
+      name: firebase_admin_sdk
+      sha256: "3827a3b30f3e76e9502cafab6fb6be28b29c632e83475b6ce3f146b5e077baad"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.5.1"
+  firebase_functions:
+    dependency: "direct main"
+    description:
+      name: firebase_functions
+      sha256: c4e9cdcf8a5650223b20992be52517981f277c4e6d9a17c1077c9523a4d65e8f
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.5.1"
+  fixnum:
+    dependency: transitive
+    description:
+      name: fixnum
+      sha256: b6dc7065e46c974bc7c5f143080a6764ec7a4be6da1285ececdc37be96de53be
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.1"
+  glob:
+    dependency: transitive
+    description:
+      name: glob
+      sha256: c3f1ee72c96f8f78935e18aa8cecced9ab132419e8625dc187e1c2408efc20de
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.3"
+  google_cloud:
+    dependency: transitive
+    description:
+      name: google_cloud
+      sha256: fbcde933b2d8600c3cdb2328f8f4c47628ec29a39e9cef85dee535c7868993c4
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.4.1"
+  google_cloud_firestore:
+    dependency: "direct main"
+    description:
+      name: google_cloud_firestore
+      sha256: e9a788301ee25cef6ffa86046cb0e80b4974b4a72d23a25231e161587fd84c8c
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.5.1"
+  google_cloud_protobuf:
+    dependency: transitive
+    description:
+      name: google_cloud_protobuf
+      sha256: "5564bfba335f7ca82fcc865f6f2c04b11fd175ec23cb0248f6e22579017e03d1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.5.0"
+  google_cloud_rpc:
+    dependency: transitive
+    description:
+      name: google_cloud_rpc
+      sha256: "7eef0b8a77021d19aff96cefcb9356dde4187daac3ecec33d7017637b83cdb4d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.5.0"
+  google_cloud_storage:
+    dependency: transitive
+    description:
+      name: google_cloud_storage
+      sha256: "8410cddc2c37b7ef81d154b3533a7d8cf22a175f519fe9ba4ee0d5a790ea3040"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.6.1"
+  google_identity_services_web:
+    dependency: transitive
+    description:
+      name: google_identity_services_web
+      sha256: "5d187c46dc59e02646e10fe82665fc3884a9b71bc1c90c2b8b749316d33ee454"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.3.3+1"
+  googleapis:
+    dependency: transitive
+    description:
+      name: googleapis
+      sha256: "62b5988f228b774448ebd99b53fe8069becb55840f1b28948bb84160373dc0b6"
+      url: "https://pub.dev"
+    source: hosted
+    version: "16.0.0"
+  googleapis_auth:
+    dependency: transitive
+    description:
+      name: googleapis_auth
+      sha256: "661738b763d3e524de69df53bf4e03943e4e01e98265cebcc6684871b06a5379"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.0"
+  http:
+    dependency: transitive
+    description:
+      name: http
+      sha256: "87721a4a50b19c7f1d49001e51409bddc46303966ce89a65af4f4e6004896412"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.6.0"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      sha256: "178d74305e7866013777bab2c3d8726205dc5a4dd935297175b19a23a2e66571"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.1.2"
+  intl:
+    dependency: transitive
+    description:
+      name: intl
+      sha256: "3df61194eb431efc39c4ceba583b95633a403f46c9fd341e550ce0bfa50e9aa5"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.20.2"
+  io:
+    dependency: transitive
+    description:
+      name: io
+      sha256: dfd5a80599cf0165756e3181807ed3e77daf6dd4137caaad72d0b7931597650b
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.5"
+  json_annotation:
+    dependency: transitive
+    description:
+      name: json_annotation
+      sha256: cb09e7dac6210041fad964ed7fbee004f14258b4eca4040f72d1234062ace4c8
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.11.0"
+  lints:
+    dependency: "direct dev"
+    description:
+      name: lints
+      sha256: "12f842a479589fea194fe5c5a3095abc7be0c1f2ddfa9a0e76aed1dbd26a87df"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.1.0"
+  logging:
+    dependency: transitive
+    description:
+      name: logging
+      sha256: c8245ada5f1717ed44271ed1c26b8ce85ca3228fd2ffdb75468ab01979309d61
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.0"
+  meta:
+    dependency: transitive
+    description:
+      name: meta
+      sha256: df0c643f44ad098eb37988027a8e2b2b5a031fd3977f06bbfd3a76637e8df739
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.18.2"
+  package_config:
+    dependency: transitive
+    description:
+      name: package_config
+      sha256: f096c55ebb7deb7e384101542bfba8c52696c1b56fca2eb62827989ef2353bbc
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.0"
+  path:
+    dependency: transitive
+    description:
+      name: path
+      sha256: "75cca69d1490965be98c73ceaea117e8a04dd21217b37b292c9ddbec0d955bc5"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.9.1"
+  pem:
+    dependency: transitive
+    description:
+      name: pem
+      sha256: e66b389cbb007fa5860d511f08ea604ea68e78afc4e1b543dc227a0f0ef4faf9
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.6"
+  petitparser:
+    dependency: transitive
+    description:
+      name: petitparser
+      sha256: "91bd59303e9f769f108f8df05e371341b15d59e995e6806aefab827b58336675"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.2"
+  pointycastle:
+    dependency: transitive
+    description:
+      name: pointycastle
+      sha256: "92aa3841d083cc4b0f4709b5c74fd6409a3e6ba833ffc7dc6a8fee096366acf5"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.0"
+  protobuf:
+    dependency: transitive
+    description:
+      name: protobuf
+      sha256: "75ec242d22e950bdcc79ee38dd520ce4ee0bc491d7fadc4ea47694604d22bf06"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.0.0"
+  pub_semver:
+    dependency: transitive
+    description:
+      name: pub_semver
+      sha256: "5bfcf68ca79ef689f8990d1160781b4bad40a3bd5e5218ad4076ddb7f4081585"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.0"
+  shared:
+    dependency: "direct main"
+    description:
+      path: "../packages/shared"
+      relative: true
+    source: path
+    version: "1.0.0"
+  shelf:
+    dependency: transitive
+    description:
+      name: shelf
+      sha256: e7dd780a7ffb623c57850b33f43309312fc863fb6aa3d276a754bb299839ef12
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.2"
+  source_gen:
+    dependency: transitive
+    description:
+      name: source_gen
+      sha256: "732792cfd197d2161a65bb029606a46e0a18ff30ef9e141a7a82172b05ea8ecd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.2.2"
+  source_span:
+    dependency: transitive
+    description:
+      name: source_span
+      sha256: "56a02f1f4cd1a2d96303c0144c93bd6d909eea6bee6bf5a0e0b685edbd4c47ab"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.10.2"
+  stack_trace:
+    dependency: transitive
+    description:
+      name: stack_trace
+      sha256: "8b27215b45d22309b5cddda1aa2b19bdfec9df0e765f2de506401c071d38d1b1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.12.1"
+  stream_channel:
+    dependency: transitive
+    description:
+      name: stream_channel
+      sha256: "969e04c80b8bcdf826f8f16579c7b14d780458bd97f56d107d3950fdbeef059d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.4"
+  string_scanner:
+    dependency: transitive
+    description:
+      name: string_scanner
+      sha256: "921cd31725b72fe181906c6a94d987c78e3b98c2e205b397ea399d4054872b43"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.1"
+  term_glyph:
+    dependency: transitive
+    description:
+      name: term_glyph
+      sha256: "7f554798625ea768a7518313e58f83891c7f5024f88e46e7182a4558850a4b8e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.2"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      sha256: f9049c039ebfeb4cf7a7104a675823cd72dba8297f264b6637062516699fa006
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.0"
+  watcher:
+    dependency: transitive
+    description:
+      name: watcher
+      sha256: "1398c9f081a753f9226febe8900fce8f7d0a67163334e1c94a2438339d79d635"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.1"
+  web:
+    dependency: transitive
+    description:
+      name: web
+      sha256: "868d88a33d8a87b18ffc05f9f030ba328ffefba92d6c127917a2ba740f9cfe4a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.1"
+  yaml:
+    dependency: transitive
+    description:
+      name: yaml
+      sha256: b9da305ac7c39faa3f030eccd175340f968459dae4af175130b3fc47e40d76ce
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.3"
+  yaml_edit:
+    dependency: transitive
+    description:
+      name: yaml_edit
+      sha256: "07c9e63ba42519745182b88ca12264a7ba2484d8239958778dfe4d44fe760488"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.4"
+sdks:
+  dart: ">=3.11.0 <4.0.0"
diff --git a/Dart/codelab-dart-functions/functions/pubspec.yaml b/Dart/codelab-dart-functions/functions/pubspec.yaml
new file mode 100644
index 0000000000..89d07e52cc
--- /dev/null
+++ b/Dart/codelab-dart-functions/functions/pubspec.yaml
@@ -0,0 +1,15 @@
+name: functions
+description: A starting point for Dart Cloud Functions
+version: 1.0.0
+publish_to: none
+
+environment:
+  sdk: ">=3.4.0 <4.0.0"
+
+dependencies:
+  firebase_functions:
+  google_cloud_firestore:
+  shared:
+    path: ../packages/shared
+dev_dependencies:
+  lints: ^6.1.0
diff --git a/Dart/codelab-dart-functions/lib/main.dart b/Dart/codelab-dart-functions/lib/main.dart
new file mode 100644
index 0000000000..e36eaa9310
--- /dev/null
+++ b/Dart/codelab-dart-functions/lib/main.dart
@@ -0,0 +1,90 @@
+import 'dart:convert';
+
+import 'package:http/http.dart' as http;
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+import 'package:shared/shared.dart';
+
+/// Get from emulator output when running or when deploying:
+/// ✔ functions[us-central1-increment]: http function initialized
+///  (http://127.0.0.1:5001/demo-no-project/us-central1/increment).
+const incrementUrl = 'FIREBASE_FUNCTIONS_URL_HERE';
+
+void main() {
+  runApp(const MyApp());
+}
+
+class MyApp extends StatelessWidget {
+  const MyApp({super.key});
+  @override
+  Widget build(BuildContext context) => MaterialApp(
+        debugShowCheckedModeBanner: false,
+        theme: ThemeData(useMaterial3: true, colorSchemeSeed: Colors.blue),
+        home: const CounterPage(),
+      );
+}
+
+class CounterPage extends StatefulWidget {
+  const CounterPage({super.key});
+  @override
+  State<CounterPage> createState() => _CounterPageState();
+}
+
+class _CounterPageState extends State<CounterPage> {
+  int _count = 0;
+  bool _loading = false;
+
+  @override
+  void initState() {
+    super.initState();
+    // Fetch the current count
+    _increment(readOnly: true).ignore();
+  }
+
+  Future<void> _increment({bool readOnly = false}) async {
+    setState(() => _loading = true);
+    try {
+      // Call the Dart function.
+      final uri = Uri.parse(incrementUrl);
+      final response = readOnly ? await http.get(uri) : await http.post(uri);
+
+      // Parse the response back into the shared Dart object.
+      final responseData = jsonDecode(response.body);
+      final incrementResponse = IncrementResponse.fromJson(responseData);
+
+      if (incrementResponse.success) {
+        setState(() => _count = incrementResponse.newCount ?? _count);
+      }
+    } catch (e) {
+      if (kDebugMode) {
+        print("Error calling function: $e");
+      }
+    } finally {
+      setState(() => _loading = false);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(title: const Text('Multiplayer Counter')),
+      body: Center(
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            const Text('You have pushed the button this many times:'),
+            Text(
+              '$_count',
+              style: Theme.of(context).textTheme.headlineMedium,
+            ),
+          ],
+        ),
+      ),
+      floatingActionButton: FloatingActionButton(
+        onPressed: _loading ? null : _increment,
+        tooltip: 'Increment',
+        child: const Icon(Icons.add),
+      ),
+    );
+  }
+}
diff --git a/Dart/codelab-dart-functions/packages/shared/.gitignore b/Dart/codelab-dart-functions/packages/shared/.gitignore
new file mode 100644
index 0000000000..3cceda5578
--- /dev/null
+++ b/Dart/codelab-dart-functions/packages/shared/.gitignore
@@ -0,0 +1,7 @@
+# https://dart.dev/guides/libraries/private-files
+# Created by `dart pub`
+.dart_tool/
+
+# Avoid committing pubspec.lock for library packages; see
+# https://dart.dev/guides/libraries/private-files#pubspeclock.
+pubspec.lock
diff --git a/Dart/codelab-dart-functions/packages/shared/CHANGELOG.md b/Dart/codelab-dart-functions/packages/shared/CHANGELOG.md
new file mode 100644
index 0000000000..effe43c82c
--- /dev/null
+++ b/Dart/codelab-dart-functions/packages/shared/CHANGELOG.md
@@ -0,0 +1,3 @@
+## 1.0.0
+
+- Initial version.
diff --git a/Dart/codelab-dart-functions/packages/shared/README.md b/Dart/codelab-dart-functions/packages/shared/README.md
new file mode 100644
index 0000000000..4a260d8d27
--- /dev/null
+++ b/Dart/codelab-dart-functions/packages/shared/README.md
@@ -0,0 +1,39 @@
+<!--
+This README describes the package. If you publish this package to pub.dev,
+this README's contents appear on the landing page for your package.
+
+For information about how to write a good package README, see the guide for
+[writing package pages](https://dart.dev/tools/pub/writing-package-pages).
+
+For general information about developing packages, see the Dart guide for
+[creating packages](https://dart.dev/guides/libraries/create-packages)
+and the Flutter guide for
+[developing packages and plugins](https://flutter.dev/to/develop-packages).
+-->
+
+TODO: Put a short description of the package here that helps potential users
+know whether this package might be useful for them.
+
+## Features
+
+TODO: List what your package can do. Maybe include images, gifs, or videos.
+
+## Getting started
+
+TODO: List prerequisites and provide or point to information on how to
+start using the package.
+
+## Usage
+
+TODO: Include short and useful examples for package users. Add longer examples
+to `/example` folder.
+
+```dart
+const like = 'sample';
+```
+
+## Additional information
+
+TODO: Tell users more about the package: where to find more information, how to
+contribute to the package, how to file issues, what response they can expect
+from the package authors, and more.
diff --git a/Dart/codelab-dart-functions/packages/shared/analysis_options.yaml b/Dart/codelab-dart-functions/packages/shared/analysis_options.yaml
new file mode 100644
index 0000000000..dee8927aaf
--- /dev/null
+++ b/Dart/codelab-dart-functions/packages/shared/analysis_options.yaml
@@ -0,0 +1,30 @@
+# This file configures the static analysis results for your project (errors,
+# warnings, and lints).
+#
+# This enables the 'recommended' set of lints from `package:lints`.
+# This set helps identify many issues that may lead to problems when running
+# or consuming Dart code, and enforces writing Dart using a single, idiomatic
+# style and format.
+#
+# If you want a smaller set of lints you can change this to specify
+# 'package:lints/core.yaml'. These are just the most critical lints
+# (the recommended set includes the core lints).
+# The core lints are also what is used by pub.dev for scoring packages.
+
+include: package:lints/recommended.yaml
+
+# Uncomment the following section to specify additional rules.
+
+# linter:
+#   rules:
+#     - camel_case_types
+
+# analyzer:
+#   exclude:
+#     - path/to/excluded/files/**
+
+# For more information about the core and recommended set of lints, see
+# https://dart.dev/go/core-lints
+
+# For additional information about configuring this file, see
+# https://dart.dev/guides/language/analysis-options
diff --git a/Dart/codelab-dart-functions/packages/shared/lib/shared.dart b/Dart/codelab-dart-functions/packages/shared/lib/shared.dart
new file mode 100644
index 0000000000..84e8c77f33
--- /dev/null
+++ b/Dart/codelab-dart-functions/packages/shared/lib/shared.dart
@@ -0,0 +1 @@
+export 'src/models.dart';
diff --git a/Dart/codelab-dart-functions/packages/shared/lib/src/models.dart b/Dart/codelab-dart-functions/packages/shared/lib/src/models.dart
new file mode 100644
index 0000000000..354f790468
--- /dev/null
+++ b/Dart/codelab-dart-functions/packages/shared/lib/src/models.dart
@@ -0,0 +1,20 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'models.g.dart';
+
+@JsonSerializable()
+class IncrementResponse {
+  final bool success;
+  final String? message;
+  final int? newCount;
+
+  const IncrementResponse({required this.success, this.message, this.newCount});
+
+  factory IncrementResponse.fromJson(Map<String, dynamic> json) =>
+      _$IncrementResponseFromJson(json);
+
+  Map<String, dynamic> toJson() => _$IncrementResponseToJson(this);
+}
+
+// Store the function name as a constant to ensure consistency between client and server.
+const incrementCallable = 'increment';
diff --git a/Dart/codelab-dart-functions/packages/shared/lib/src/models.g.dart b/Dart/codelab-dart-functions/packages/shared/lib/src/models.g.dart
new file mode 100644
index 0000000000..492df5c356
--- /dev/null
+++ b/Dart/codelab-dart-functions/packages/shared/lib/src/models.g.dart
@@ -0,0 +1,21 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'models.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+IncrementResponse _$IncrementResponseFromJson(Map<String, dynamic> json) =>
+    IncrementResponse(
+      success: json['success'] as bool,
+      message: json['message'] as String?,
+      newCount: (json['newCount'] as num?)?.toInt(),
+    );
+
+Map<String, dynamic> _$IncrementResponseToJson(IncrementResponse instance) =>
+    <String, dynamic>{
+      'success': instance.success,
+      'message': instance.message,
+      'newCount': instance.newCount,
+    };
diff --git a/Dart/codelab-dart-functions/packages/shared/lib/src/shared_base.dart b/Dart/codelab-dart-functions/packages/shared/lib/src/shared_base.dart
new file mode 100644
index 0000000000..e8a6f15901
--- /dev/null
+++ b/Dart/codelab-dart-functions/packages/shared/lib/src/shared_base.dart
@@ -0,0 +1,6 @@
+// TODO: Put public facing types in this file.
+
+/// Checks if you are awesome. Spoiler: you are.
+class Awesome {
+  bool get isAwesome => true;
+}
diff --git a/Dart/codelab-dart-functions/packages/shared/pubspec.lock b/Dart/codelab-dart-functions/packages/shared/pubspec.lock
new file mode 100644
index 0000000000..e3c4392a64
--- /dev/null
+++ b/Dart/codelab-dart-functions/packages/shared/pubspec.lock
@@ -0,0 +1,525 @@
+# Generated by pub
+# See https://dart.dev/tools/pub/glossary#lockfile
+packages:
+  _fe_analyzer_shared:
+    dependency: transitive
+    description:
+      name: _fe_analyzer_shared
+      sha256: a49d6cf99e8d8e7a8e93668d09ced0bbdb954d0b4fccc2f5f9241c6b87fad95c
+      url: "https://pub.dev"
+    source: hosted
+    version: "99.0.0"
+  analyzer:
+    dependency: transitive
+    description:
+      name: analyzer
+      sha256: "663efa951fb8a45e06f491223a604c93820598f20e6a99c25617a1576065e8b7"
+      url: "https://pub.dev"
+    source: hosted
+    version: "12.1.0"
+  args:
+    dependency: transitive
+    description:
+      name: args
+      sha256: d0481093c50b1da8910eb0bb301626d4d8eb7284aa739614d2b394ee09e3ea04
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.7.0"
+  async:
+    dependency: transitive
+    description:
+      name: async
+      sha256: e2eb0491ba5ddb6177742d2da23904574082139b07c1e33b8503b9f46f3e1a37
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.13.1"
+  boolean_selector:
+    dependency: transitive
+    description:
+      name: boolean_selector
+      sha256: "8aab1771e1243a5063b8b0ff68042d67334e3feab9e95b9490f9a6ebf73b42ea"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.2"
+  build:
+    dependency: transitive
+    description:
+      name: build
+      sha256: aadd943f4f8cc946882c954c187e6115a84c98c81ad1d9c6cbf0895a8c85da9c
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.5"
+  build_config:
+    dependency: transitive
+    description:
+      name: build_config
+      sha256: "4070d2a59f8eec34c97c86ceb44403834899075f66e8a9d59706f8e7834f6f71"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.0"
+  build_daemon:
+    dependency: transitive
+    description:
+      name: build_daemon
+      sha256: bf05f6e12cfea92d3c09308d7bcdab1906cd8a179b023269eed00c071004b957
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.1.1"
+  build_runner:
+    dependency: "direct dev"
+    description:
+      name: build_runner
+      sha256: "521daf8d189deb79ba474e43a696b41c49fb3987818dbacf3308f1e03673a75e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.13.1"
+  built_collection:
+    dependency: transitive
+    description:
+      name: built_collection
+      sha256: "376e3dd27b51ea877c28d525560790aee2e6fbb5f20e2f85d5081027d94e2100"
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.1.1"
+  built_value:
+    dependency: transitive
+    description:
+      name: built_value
+      sha256: "0730c18c770d05636a8f945c32a4d7d81cb6e0f0148c8db4ad12e7748f7e49af"
+      url: "https://pub.dev"
+    source: hosted
+    version: "8.12.5"
+  checked_yaml:
+    dependency: transitive
+    description:
+      name: checked_yaml
+      sha256: "959525d3162f249993882720d52b7e0c833978df229be20702b33d48d91de70f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.4"
+  cli_config:
+    dependency: transitive
+    description:
+      name: cli_config
+      sha256: ac20a183a07002b700f0c25e61b7ee46b23c309d76ab7b7640a028f18e4d99ec
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.0"
+  code_builder:
+    dependency: transitive
+    description:
+      name: code_builder
+      sha256: "6a6cab2ba4680d6423f34a9b972a4c9a94ebe1b62ecec4e1a1f2cba91fd1319d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.11.1"
+  collection:
+    dependency: transitive
+    description:
+      name: collection
+      sha256: "2f5709ae4d3d59dd8f7cd309b4e023046b57d8a6c82130785d2b0e5868084e76"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.19.1"
+  convert:
+    dependency: transitive
+    description:
+      name: convert
+      sha256: b30acd5944035672bc15c6b7a8b47d773e41e2f17de064350988c5d02adb1c68
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.2"
+  coverage:
+    dependency: transitive
+    description:
+      name: coverage
+      sha256: "5da775aa218eaf2151c721b16c01c7676fbfdd99cebba2bf64e8b807a28ff94d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.15.0"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      sha256: c8ea0233063ba03258fbcf2ca4d6dadfefe14f02fab57702265467a19f27fadf
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.7"
+  dart_style:
+    dependency: transitive
+    description:
+      name: dart_style
+      sha256: a4c1ccfee44c7e75ed80484071a5c142a385345e658fd8bd7c4b5c97e7198f98
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.8"
+  file:
+    dependency: transitive
+    description:
+      name: file
+      sha256: a3b4f84adafef897088c160faf7dfffb7696046cb13ae90b508c2cbc95d3b8d4
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.1"
+  fixnum:
+    dependency: transitive
+    description:
+      name: fixnum
+      sha256: b6dc7065e46c974bc7c5f143080a6764ec7a4be6da1285ececdc37be96de53be
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.1"
+  frontend_server_client:
+    dependency: transitive
+    description:
+      name: frontend_server_client
+      sha256: f64a0333a82f30b0cca061bc3d143813a486dc086b574bfb233b7c1372427694
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.0"
+  glob:
+    dependency: transitive
+    description:
+      name: glob
+      sha256: c3f1ee72c96f8f78935e18aa8cecced9ab132419e8625dc187e1c2408efc20de
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.3"
+  graphs:
+    dependency: transitive
+    description:
+      name: graphs
+      sha256: "741bbf84165310a68ff28fe9e727332eef1407342fca52759cb21ad8177bb8d0"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.2"
+  http_multi_server:
+    dependency: transitive
+    description:
+      name: http_multi_server
+      sha256: aa6199f908078bb1c5efb8d8638d4ae191aac11b311132c3ef48ce352fb52ef8
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.2.2"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      sha256: "178d74305e7866013777bab2c3d8726205dc5a4dd935297175b19a23a2e66571"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.1.2"
+  io:
+    dependency: transitive
+    description:
+      name: io
+      sha256: dfd5a80599cf0165756e3181807ed3e77daf6dd4137caaad72d0b7931597650b
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.5"
+  json_annotation:
+    dependency: "direct main"
+    description:
+      name: json_annotation
+      sha256: cb09e7dac6210041fad964ed7fbee004f14258b4eca4040f72d1234062ace4c8
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.11.0"
+  json_serializable:
+    dependency: "direct dev"
+    description:
+      name: json_serializable
+      sha256: fbcf404b03520e6e795f6b9b39badb2b788407dfc0a50cf39158a6ae1ca78925
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.13.1"
+  lints:
+    dependency: "direct dev"
+    description:
+      name: lints
+      sha256: "12f842a479589fea194fe5c5a3095abc7be0c1f2ddfa9a0e76aed1dbd26a87df"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.1.0"
+  logging:
+    dependency: transitive
+    description:
+      name: logging
+      sha256: c8245ada5f1717ed44271ed1c26b8ce85ca3228fd2ffdb75468ab01979309d61
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.0"
+  matcher:
+    dependency: transitive
+    description:
+      name: matcher
+      sha256: dc0b7dc7651697ea4ff3e69ef44b0407ea32c487a39fff6a4004fa585e901861
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.12.19"
+  meta:
+    dependency: transitive
+    description:
+      name: meta
+      sha256: df0c643f44ad098eb37988027a8e2b2b5a031fd3977f06bbfd3a76637e8df739
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.18.2"
+  mime:
+    dependency: transitive
+    description:
+      name: mime
+      sha256: "41a20518f0cb1256669420fdba0cd90d21561e560ac240f26ef8322e45bb7ed6"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.0"
+  node_preamble:
+    dependency: transitive
+    description:
+      name: node_preamble
+      sha256: "6e7eac89047ab8a8d26cf16127b5ed26de65209847630400f9aefd7cd5c730db"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.2"
+  package_config:
+    dependency: transitive
+    description:
+      name: package_config
+      sha256: f096c55ebb7deb7e384101542bfba8c52696c1b56fca2eb62827989ef2353bbc
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.0"
+  path:
+    dependency: transitive
+    description:
+      name: path
+      sha256: "75cca69d1490965be98c73ceaea117e8a04dd21217b37b292c9ddbec0d955bc5"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.9.1"
+  pool:
+    dependency: transitive
+    description:
+      name: pool
+      sha256: "978783255c543aa3586a1b3c21f6e9d720eb315376a915872c61ef8b5c20177d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.5.2"
+  pub_semver:
+    dependency: transitive
+    description:
+      name: pub_semver
+      sha256: "5bfcf68ca79ef689f8990d1160781b4bad40a3bd5e5218ad4076ddb7f4081585"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.0"
+  pubspec_parse:
+    dependency: transitive
+    description:
+      name: pubspec_parse
+      sha256: "0560ba233314abbed0a48a2956f7f022cce7c3e1e73df540277da7544cad4082"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.5.0"
+  shelf:
+    dependency: transitive
+    description:
+      name: shelf
+      sha256: e7dd780a7ffb623c57850b33f43309312fc863fb6aa3d276a754bb299839ef12
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.2"
+  shelf_packages_handler:
+    dependency: transitive
+    description:
+      name: shelf_packages_handler
+      sha256: "89f967eca29607c933ba9571d838be31d67f53f6e4ee15147d5dc2934fee1b1e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.2"
+  shelf_static:
+    dependency: transitive
+    description:
+      name: shelf_static
+      sha256: c87c3875f91262785dade62d135760c2c69cb217ac759485334c5857ad89f6e3
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.3"
+  shelf_web_socket:
+    dependency: transitive
+    description:
+      name: shelf_web_socket
+      sha256: "3632775c8e90d6c9712f883e633716432a27758216dfb61bd86a8321c0580925"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.0"
+  source_gen:
+    dependency: transitive
+    description:
+      name: source_gen
+      sha256: "732792cfd197d2161a65bb029606a46e0a18ff30ef9e141a7a82172b05ea8ecd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.2.2"
+  source_helper:
+    dependency: transitive
+    description:
+      name: source_helper
+      sha256: "1d3b229b2934034fb2e691fbb3d53e0f75a4af7b1407f88425ed8f209bcb1b8f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.11"
+  source_map_stack_trace:
+    dependency: transitive
+    description:
+      name: source_map_stack_trace
+      sha256: c0713a43e323c3302c2abe2a1cc89aa057a387101ebd280371d6a6c9fa68516b
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.2"
+  source_maps:
+    dependency: transitive
+    description:
+      name: source_maps
+      sha256: "190222579a448b03896e0ca6eca5998fa810fda630c1d65e2f78b3f638f54812"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.10.13"
+  source_span:
+    dependency: transitive
+    description:
+      name: source_span
+      sha256: "56a02f1f4cd1a2d96303c0144c93bd6d909eea6bee6bf5a0e0b685edbd4c47ab"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.10.2"
+  stack_trace:
+    dependency: transitive
+    description:
+      name: stack_trace
+      sha256: "8b27215b45d22309b5cddda1aa2b19bdfec9df0e765f2de506401c071d38d1b1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.12.1"
+  stream_channel:
+    dependency: transitive
+    description:
+      name: stream_channel
+      sha256: "969e04c80b8bcdf826f8f16579c7b14d780458bd97f56d107d3950fdbeef059d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.4"
+  stream_transform:
+    dependency: transitive
+    description:
+      name: stream_transform
+      sha256: ad47125e588cfd37a9a7f86c7d6356dde8dfe89d071d293f80ca9e9273a33871
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.1"
+  string_scanner:
+    dependency: transitive
+    description:
+      name: string_scanner
+      sha256: "921cd31725b72fe181906c6a94d987c78e3b98c2e205b397ea399d4054872b43"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.1"
+  term_glyph:
+    dependency: transitive
+    description:
+      name: term_glyph
+      sha256: "7f554798625ea768a7518313e58f83891c7f5024f88e46e7182a4558850a4b8e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.2"
+  test:
+    dependency: "direct dev"
+    description:
+      name: test
+      sha256: "8d9ceddbab833f180fbefed08afa76d7c03513dfdba87ffcec2718b02bbcbf20"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.31.0"
+  test_api:
+    dependency: transitive
+    description:
+      name: test_api
+      sha256: "949a932224383300f01be9221c39180316445ecb8e7547f70a41a35bf421fb9e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.7.11"
+  test_core:
+    dependency: transitive
+    description:
+      name: test_core
+      sha256: "1991d4cfe85d5043241acac92962c3977c8d2f2add1ee73130c7b286417d1d34"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.6.17"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      sha256: f9049c039ebfeb4cf7a7104a675823cd72dba8297f264b6637062516699fa006
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.0"
+  vm_service:
+    dependency: transitive
+    description:
+      name: vm_service
+      sha256: "046d3928e16fa4dc46e8350415661755ab759d9fc97fc21b5ab295f71e4f0499"
+      url: "https://pub.dev"
+    source: hosted
+    version: "15.1.0"
+  watcher:
+    dependency: transitive
+    description:
+      name: watcher
+      sha256: "1398c9f081a753f9226febe8900fce8f7d0a67163334e1c94a2438339d79d635"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.1"
+  web:
+    dependency: transitive
+    description:
+      name: web
+      sha256: "868d88a33d8a87b18ffc05f9f030ba328ffefba92d6c127917a2ba740f9cfe4a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.1"
+  web_socket:
+    dependency: transitive
+    description:
+      name: web_socket
+      sha256: "34d64019aa8e36bf9842ac014bb5d2f5586ca73df5e4d9bf5c936975cae6982c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.1"
+  web_socket_channel:
+    dependency: transitive
+    description:
+      name: web_socket_channel
+      sha256: d645757fb0f4773d602444000a8131ff5d48c9e47adfe9772652dd1a4f2d45c8
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.3"
+  webkit_inspection_protocol:
+    dependency: transitive
+    description:
+      name: webkit_inspection_protocol
+      sha256: "87d3f2333bb240704cd3f1c6b5b7acd8a10e7f0bc28c28dcf14e782014f4a572"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.1"
+  yaml:
+    dependency: transitive
+    description:
+      name: yaml
+      sha256: b9da305ac7c39faa3f030eccd175340f968459dae4af175130b3fc47e40d76ce
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.3"
+sdks:
+  dart: ">=3.11.0 <4.0.0"
diff --git a/Dart/codelab-dart-functions/packages/shared/pubspec.yaml b/Dart/codelab-dart-functions/packages/shared/pubspec.yaml
new file mode 100644
index 0000000000..c1b32cadad
--- /dev/null
+++ b/Dart/codelab-dart-functions/packages/shared/pubspec.yaml
@@ -0,0 +1,18 @@
+name: shared
+description: A starting point for Dart libraries or applications.
+version: 1.0.0
+# repository: https://github.com/my_org/my_repo
+
+environment:
+  sdk: ^3.11.0
+
+# Add regular dependencies here.
+dependencies:
+  json_annotation: ^4.11.0
+  # path: ^1.9.0
+
+dev_dependencies:
+  build_runner: ^2.13.1
+  json_serializable: ^6.13.1
+  lints: ^6.0.0
+  test: ^1.25.6
diff --git a/Dart/codelab-dart-functions/pubspec.lock b/Dart/codelab-dart-functions/pubspec.lock
new file mode 100644
index 0000000000..d34dd58dd4
--- /dev/null
+++ b/Dart/codelab-dart-functions/pubspec.lock
@@ -0,0 +1,260 @@
+# Generated by pub
+# See https://dart.dev/tools/pub/glossary#lockfile
+packages:
+  async:
+    dependency: transitive
+    description:
+      name: async
+      sha256: e2eb0491ba5ddb6177742d2da23904574082139b07c1e33b8503b9f46f3e1a37
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.13.1"
+  boolean_selector:
+    dependency: transitive
+    description:
+      name: boolean_selector
+      sha256: "8aab1771e1243a5063b8b0ff68042d67334e3feab9e95b9490f9a6ebf73b42ea"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.2"
+  characters:
+    dependency: transitive
+    description:
+      name: characters
+      sha256: faf38497bda5ead2a8c7615f4f7939df04333478bf32e4173fcb06d428b5716b
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.1"
+  clock:
+    dependency: transitive
+    description:
+      name: clock
+      sha256: fddb70d9b5277016c77a80201021d40a2247104d9f4aa7bab7157b7e3f05b84b
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.2"
+  collection:
+    dependency: transitive
+    description:
+      name: collection
+      sha256: "2f5709ae4d3d59dd8f7cd309b4e023046b57d8a6c82130785d2b0e5868084e76"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.19.1"
+  cupertino_icons:
+    dependency: "direct main"
+    description:
+      name: cupertino_icons
+      sha256: "41e005c33bd814be4d3096aff55b1908d419fde52ca656c8c47719ec745873cd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.9"
+  fake_async:
+    dependency: transitive
+    description:
+      name: fake_async
+      sha256: "5368f224a74523e8d2e7399ea1638b37aecfca824a3cc4dfdf77bf1fa905ac44"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.3"
+  flutter:
+    dependency: "direct main"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  flutter_lints:
+    dependency: "direct dev"
+    description:
+      name: flutter_lints
+      sha256: "5398f14efa795ffb7a33e9b6a08798b26a180edac4ad7db3f231e40f82ce11e1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.0.0"
+  flutter_test:
+    dependency: "direct dev"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  http:
+    dependency: "direct main"
+    description:
+      name: http
+      sha256: "87721a4a50b19c7f1d49001e51409bddc46303966ce89a65af4f4e6004896412"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.6.0"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      sha256: "178d74305e7866013777bab2c3d8726205dc5a4dd935297175b19a23a2e66571"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.1.2"
+  json_annotation:
+    dependency: transitive
+    description:
+      name: json_annotation
+      sha256: cb09e7dac6210041fad964ed7fbee004f14258b4eca4040f72d1234062ace4c8
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.11.0"
+  leak_tracker:
+    dependency: transitive
+    description:
+      name: leak_tracker
+      sha256: "33e2e26bdd85a0112ec15400c8cbffea70d0f9c3407491f672a2fad47915e2de"
+      url: "https://pub.dev"
+    source: hosted
+    version: "11.0.2"
+  leak_tracker_flutter_testing:
+    dependency: transitive
+    description:
+      name: leak_tracker_flutter_testing
+      sha256: "1dbc140bb5a23c75ea9c4811222756104fbcd1a27173f0c34ca01e16bea473c1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.10"
+  leak_tracker_testing:
+    dependency: transitive
+    description:
+      name: leak_tracker_testing
+      sha256: "8d5a2d49f4a66b49744b23b018848400d23e54caf9463f4eb20df3eb8acb2eb1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.2"
+  lints:
+    dependency: transitive
+    description:
+      name: lints
+      sha256: c35bb79562d980e9a453fc715854e1ed39e24e7d0297a880ef54e17f9874a9d7
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.1.1"
+  matcher:
+    dependency: transitive
+    description:
+      name: matcher
+      sha256: "12956d0ad8390bbcc63ca2e1469c0619946ccb52809807067a7020d57e647aa6"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.12.18"
+  material_color_utilities:
+    dependency: transitive
+    description:
+      name: material_color_utilities
+      sha256: "9c337007e82b1889149c82ed242ed1cb24a66044e30979c44912381e9be4c48b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.13.0"
+  meta:
+    dependency: transitive
+    description:
+      name: meta
+      sha256: "23f08335362185a5ea2ad3a4e597f1375e78bce8a040df5c600c8d3552ef2394"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.17.0"
+  path:
+    dependency: transitive
+    description:
+      name: path
+      sha256: "75cca69d1490965be98c73ceaea117e8a04dd21217b37b292c9ddbec0d955bc5"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.9.1"
+  shared:
+    dependency: "direct main"
+    description:
+      path: "packages/shared"
+      relative: true
+    source: path
+    version: "1.0.0"
+  sky_engine:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  source_span:
+    dependency: transitive
+    description:
+      name: source_span
+      sha256: "56a02f1f4cd1a2d96303c0144c93bd6d909eea6bee6bf5a0e0b685edbd4c47ab"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.10.2"
+  stack_trace:
+    dependency: transitive
+    description:
+      name: stack_trace
+      sha256: "8b27215b45d22309b5cddda1aa2b19bdfec9df0e765f2de506401c071d38d1b1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.12.1"
+  stream_channel:
+    dependency: transitive
+    description:
+      name: stream_channel
+      sha256: "969e04c80b8bcdf826f8f16579c7b14d780458bd97f56d107d3950fdbeef059d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.4"
+  string_scanner:
+    dependency: transitive
+    description:
+      name: string_scanner
+      sha256: "921cd31725b72fe181906c6a94d987c78e3b98c2e205b397ea399d4054872b43"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.1"
+  term_glyph:
+    dependency: transitive
+    description:
+      name: term_glyph
+      sha256: "7f554798625ea768a7518313e58f83891c7f5024f88e46e7182a4558850a4b8e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.2"
+  test_api:
+    dependency: transitive
+    description:
+      name: test_api
+      sha256: "93167629bfc610f71560ab9312acdda4959de4df6fac7492c89ff0d3886f6636"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.7.9"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      sha256: f9049c039ebfeb4cf7a7104a675823cd72dba8297f264b6637062516699fa006
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.0"
+  vector_math:
+    dependency: transitive
+    description:
+      name: vector_math
+      sha256: d530bd74fea330e6e364cda7a85019c434070188383e1cd8d9777ee586914c5b
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.0"
+  vm_service:
+    dependency: transitive
+    description:
+      name: vm_service
+      sha256: "046d3928e16fa4dc46e8350415661755ab759d9fc97fc21b5ab295f71e4f0499"
+      url: "https://pub.dev"
+    source: hosted
+    version: "15.1.0"
+  web:
+    dependency: transitive
+    description:
+      name: web
+      sha256: "868d88a33d8a87b18ffc05f9f030ba328ffefba92d6c127917a2ba740f9cfe4a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.1"
+sdks:
+  dart: ">=3.11.0 <4.0.0"
+  flutter: ">=3.18.0-18.0.pre.54"
diff --git a/Dart/codelab-dart-functions/pubspec.yaml b/Dart/codelab-dart-functions/pubspec.yaml
new file mode 100644
index 0000000000..a3e4b7830b
--- /dev/null
+++ b/Dart/codelab-dart-functions/pubspec.yaml
@@ -0,0 +1,24 @@
+name: codelab_dart_functions
+description: "A new Flutter project."
+publish_to: 'none'
+
+version: 1.0.0+1
+
+environment:
+  sdk: ^3.4.1
+
+dependencies:
+  flutter:
+    sdk: flutter
+  cupertino_icons: ^1.0.8
+  http: ^1.6.0
+  shared:
+    path: packages/shared
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+  flutter_lints: ^5.0.0
+
+flutter:
+  uses-material-design: true
diff --git a/Dart/codelab-dart-functions/test/widget_test.dart b/Dart/codelab-dart-functions/test/widget_test.dart
new file mode 100644
index 0000000000..cec7f3eee7
--- /dev/null
+++ b/Dart/codelab-dart-functions/test/widget_test.dart
@@ -0,0 +1,10 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:codelab_dart_functions/main.dart';
+
+void main() {
+  testWidgets('App smoke test', (WidgetTester tester) async {
+    // Build our app and trigger a frame.
+    await tester.pumpWidget(const MyApp());
+    expect(find.text('Multiplayer Counter'), findsOneWidget);
+  });
+}