fix: Fixed dcm warnings.

lib/core/failures/api_failure.dart

@@ -12,7 +12,7 @@ base class ApiFailure extends Failure<DioException> {
   /// Original error status code from [DioException].
   final int? responseBodyCode;
 
-  /// Message
+  /// Message.
   final String? message;
 
   /// {@macro api_failure.class}
@@ -24,13 +24,13 @@ base class ApiFailure extends Failure<DioException> {
     this.message,
   });
 
-  // TODO(anyone): add getters for special status codes
+  // TODO(anyone): Add getters for special status codes.
   /// Sample: ExpiredToken - refresh token has expired
-  // bool get isExpiredRefreshToken => statusCode == 102;
+  /// bool get isExpiredRefreshToken => statusCode == 102
 }
 
 /// {@template timeout_failure.class}
-/// TimeoutException
+/// TimeoutException.
 /// {@endtemplate}
 final class TimeoutFailure extends ApiFailure {
   /// {@macro timeout_failure.class}

lib/runner.dart

@@ -22,9 +22,8 @@ Future<void> run(Environment env) async {
   }
 
   // TODO(init-project): Initialize Crashlytics.
-  // _setupCrashlytics();
 
-  // TODO(init-project): change as needed or remove.
+  // TODO(init-project): Change as needed or remove.
   await SystemChrome.setPreferredOrientations([DeviceOrientation.portraitUp]);
 
   await _runApp(env);

lib/util/extensions/closures.dart

@@ -1,41 +1,49 @@
 // ignore_for_file: prefer-match-file-name
 
-/// Let extension
+/// The closure that is passed as a parameter to extension methods.
+typedef Closure<R, T> = R Function(T it);
+
+/// Let extension.
 extension LetX<T extends Object> on T {
-  /// Executes a closure, where the argument is the value itself
-  R let<R>(R Function(T it) closure) {
+  /// Executes a closure, where the argument is the value itself.
+  R let<R>(Closure<R, T> closure) {
     return closure(this);
   }
 
-  /// Executes a closure, where the argument is the value itself
-  R? run<R>(R? Function(T it) closure) {
+  /// Executes a closure, where the argument is the value itself.
+  R? run<R>(Closure<R?, T> closure) {
     return closure(this);
   }
 }
 
-/// Let nullable extension
+/// Let nullable extension.
 extension LetNullableX<T extends Object> on T? {
-  /// Executes a closure on a nullable value, where the argument is the value itself
-  R? let<R>(R Function(T it) closure) {
-    return this != null ? closure(this!) : null;
+  /// Executes a closure on a nullable value, where the argument is the value itself.
+  R? let<R>(Closure<R, T> closure) {
+    final object = this;
+
+    return object == null ? null : closure(object);
   }
 
-  /// Executes a closure on a nullable value, where the argument is the value itself
-  R? run<R>(R? Function(T it) closure) {
-    return this != null ? closure(this!) : null;
+  /// Executes a closure on a nullable value, where the argument is the value itself.
+  R? run<R>(Closure<R?, T> closure) {
+    final object = this;
+
+    return object == null ? null : closure(object);
   }
 }
 
-/// Also extension
+/// Also extension.
 extension AlsoX<T extends Object?> on T {
-  /// Additionally executes a closure and returns the value itself
-  T also(void Function(T it) closure) {
+  /// Additionally executes a closure and returns the value itself.
+  T also(Closure<void, T> closure) {
     closure(this);
+
     return this;
   }
 }
 
-/// Repeat extension
+/// Repeat extension.
 extension RepeatX<T extends Object?> on T {
   /// Returns a Iterable<T> containing this object repeated [times] times.
   Iterable<T> repeat(int times) {

pubspec.lock

@@ -325,10 +325,10 @@ packages:
     dependency: transitive
     description:
       name: firebase_core_web
-      sha256: d585bdf3c656c3f7821ba1bd44da5f13365d22fcecaf5eb75c4295246aaa83c0
+      sha256: "5377eaac3b9fe8aaf22638d87f92b62784f23572e132dfc029195e84d6cb37de"
       url: "https://pub.dev"
     source: hosted
-    version: "2.10.0"
+    version: "2.12.0"
   firebase_crashlytics:
     dependency: "direct main"
     description:
@@ -1014,10 +1014,10 @@ packages:
     dependency: transitive
     description:
       name: sqflite_common
-      sha256: "28d8c66baee4968519fb8bd6cdbedad982d6e53359091f0b74544a9f32ec72d5"
+      sha256: "3da423ce7baf868be70e2c0976c28a1bb2f73644268b7ffa7d2e08eab71f16a4"
       url: "https://pub.dev"
     source: hosted
-    version: "2.5.3"
+    version: "2.5.4"
   stack_trace:
     dependency: transitive
     description:
@@ -1222,10 +1222,10 @@ packages:
     dependency: transitive
     description:
       name: win32
-      sha256: "464f5674532865248444b4c3daca12bd9bf2d7c47f759ce2617986e7229494a8"
+      sha256: "8cb58b45c47dcb42ab3651533626161d6b67a2921917d8d429791f76972b3480"
       url: "https://pub.dev"
     source: hosted
-    version: "5.2.0"
+    version: "5.3.0"
   xdg_directories:
     dependency: transitive
     description: