fix: update all Dart SDK version constraints to Dart >= 2.16.0 (#8184)

Co-authored-by: Salakar <[email protected]>

Author: rrousselGit

docs/firestore-odm/overview.mdx

@@ -38,7 +38,7 @@ That is done by adding the following to your `pubspec.yaml`:
 
 ```yaml
 environment:
-  sdk: ">=2.14.0 <3.0.0"
+  sdk: ">=2.16.0 <3.0.0"
 ```
 
 ### 2. FlutterFire Initialization

packages/cloud_firestore/cloud_firestore/example/pubspec.yaml

@@ -2,7 +2,7 @@ name: cloud_firestore_example
 description: Demonstrates how to use the firestore plugin.
 
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: '>=2.16.0 <3.0.0'
   flutter: '>=1.12.13+hotfix.4'
 
 dependencies:

packages/cloud_firestore/cloud_firestore/lib/src/load_bundle_task.dart

@@ -8,5 +8,6 @@ class LoadBundleTask {
   final LoadBundleTaskPlatform _delegate;
 
   late final Stream<LoadBundleTaskSnapshot> stream =
+      // ignore: unnecessary_lambdas, false positive, event is dynamic
       _delegate.stream.map((event) => LoadBundleTaskSnapshot._(event));
 }

packages/cloud_firestore/cloud_firestore/pubspec.yaml

@@ -11,7 +11,7 @@ false_secrets:
   - dartpad/**
 
 environment:
-  sdk: ">=2.12.0 <3.0.0"
+  sdk: ">=2.16.0 <3.0.0"
   flutter: ">=1.12.13+hotfix.5"
 
 dependencies:

packages/cloud_firestore/cloud_firestore_platform_interface/pubspec.yaml

@@ -5,7 +5,7 @@ homepage: https://github.com/FirebaseExtended/flutterfire/tree/master/packages/c
 repository: https://github.com/FirebaseExtended/flutterfire/tree/master/packages/cloud_firestore/cloud_firestore_platform_interface
 
 environment:
-  sdk: ">=2.12.0 <3.0.0"
+  sdk: ">=2.16.0 <3.0.0"
   flutter: ">=1.9.1+hotfix.5"
 
 dependencies:

packages/cloud_firestore/cloud_firestore_platform_interface/test/set_options_test.dart

@@ -9,7 +9,7 @@ import 'package:flutter_test/flutter_test.dart';
 void main() {
   group('$SetOptions', () {
     test('throws if no options are provided', () {
-      expect(() => SetOptions(), throwsAssertionError);
+      expect(SetOptions.new, throwsAssertionError);
     });
 
     test('throws if mergeFields contains invalid values', () {

packages/cloud_firestore/cloud_firestore_web/pubspec.yaml

@@ -6,7 +6,7 @@ repository: https://github.com/FirebaseExtended/flutterfire/tree/master/packages
 version: 2.6.9
 
 environment:
-  sdk: ">=2.12.0 <3.0.0"
+  sdk: ">=2.16.0 <3.0.0"
   flutter: ">=1.12.13+hotfix.4"
 
 dependencies:

packages/cloud_firestore_odm/cloud_firestore_odm/example/pubspec.yaml

@@ -3,7 +3,7 @@ version: 1.0.0-dev.1
 publish_to: none
 
 environment:
-  sdk: ">=2.14.0-0.0.dev <3.0.0"
+  sdk: ">=2.16.0 <3.0.0"
 
 dependencies:
   cloud_firestore:

packages/cloud_firestore_odm/cloud_firestore_odm/pubspec.yaml

@@ -8,7 +8,7 @@ false_secrets:
   - example/**
 
 environment:
-  sdk: ">=2.14.0-0.0.dev <3.0.0"
+  sdk: ">=2.16.0 <3.0.0"
 
 dependencies:
   cloud_firestore: ^3.1.9

packages/cloud_firestore_odm/cloud_firestore_odm/test/common.dart

@@ -14,7 +14,7 @@ class FakeCollectionReference<Value>
   Future<FakeQuerySnapshot<Value>> get([GetOptions? options]) async {
     return FakeQuerySnapshot<Value>(
       valueListenable.value
-          .map((e) => FakeFirestoreQueryDocumentSnapshot(e))
+          .map(FakeFirestoreQueryDocumentSnapshot.new)
           .toList(),
     );
   }
@@ -30,7 +30,7 @@ class FakeCollectionReference<Value>
       controller.add(
         FakeQuerySnapshot<Value>(
           valueListenable.value
-              .map((e) => FakeFirestoreQueryDocumentSnapshot(e))
+              .map(FakeFirestoreQueryDocumentSnapshot.new)
               .toList(),
         ),
       );