diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8ae4408..4c8cfee 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+## 1.9.1
+- Ajustes nos comentários. Remoção de variáveis alocadas desnecessáriamente.
+
 ## 1.9.0
 - Novos métodos em `UtilData`: obterDateTimeHora e obterDateTimeHoraMinuto.
 - Ajustes no worflow.yml
diff --git a/README.md b/README.md
index ce20c0f..1bf288f 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ Este package facilita o desenvolvimento de projetos que utilizam campos com os p
 - Placa de veículo (AAA-1234)
 - Real (R\$) (20.550)
 - Telefone ( (99) 9999-9999)
-- Validade de cartão bancário (12/24)
+- Validade de cartão bancário (12/24 ou 12/2024)
 - Temperatura (27,1)
 
 ### Padrões
diff --git a/example/.gitignore b/example/.gitignore
index 0fa6b67..24476c5 100644
--- a/example/.gitignore
+++ b/example/.gitignore
@@ -8,6 +8,7 @@
 .buildlog/
 .history
 .svn/
+migrate_working_dir/
 
 # IntelliJ related
 *.iml
@@ -31,9 +32,6 @@
 .pub/
 /build/
 
-# Web related
-lib/generated_plugin_registrant.dart
-
 # Symbolication related
 app.*.symbols
 
diff --git a/example/.metadata b/example/.metadata
index 6c304fe..262ceed 100644
--- a/example/.metadata
+++ b/example/.metadata
@@ -4,7 +4,7 @@
 # This file should be version controlled.
 
 version:
-  revision: 18a827f3933c19f51862dde3fa472197683249d6
+  revision: 135454af32477f815a7525073027a3ff9eff1bfd
   channel: stable
 
 project_type: app
@@ -13,11 +13,26 @@ project_type: app
 migration:
   platforms:
     - platform: root
-      create_revision: 18a827f3933c19f51862dde3fa472197683249d6
-      base_revision: 18a827f3933c19f51862dde3fa472197683249d6
+      create_revision: 135454af32477f815a7525073027a3ff9eff1bfd
+      base_revision: 135454af32477f815a7525073027a3ff9eff1bfd
+    - platform: android
+      create_revision: 135454af32477f815a7525073027a3ff9eff1bfd
+      base_revision: 135454af32477f815a7525073027a3ff9eff1bfd
+    - platform: ios
+      create_revision: 135454af32477f815a7525073027a3ff9eff1bfd
+      base_revision: 135454af32477f815a7525073027a3ff9eff1bfd
+    - platform: linux
+      create_revision: 135454af32477f815a7525073027a3ff9eff1bfd
+      base_revision: 135454af32477f815a7525073027a3ff9eff1bfd
     - platform: macos
-      create_revision: 18a827f3933c19f51862dde3fa472197683249d6
-      base_revision: 18a827f3933c19f51862dde3fa472197683249d6
+      create_revision: 135454af32477f815a7525073027a3ff9eff1bfd
+      base_revision: 135454af32477f815a7525073027a3ff9eff1bfd
+    - platform: web
+      create_revision: 135454af32477f815a7525073027a3ff9eff1bfd
+      base_revision: 135454af32477f815a7525073027a3ff9eff1bfd
+    - platform: windows
+      create_revision: 135454af32477f815a7525073027a3ff9eff1bfd
+      base_revision: 135454af32477f815a7525073027a3ff9eff1bfd
 
   # User provided section
 
diff --git a/example/.vscode/launch.json b/example/.vscode/launch.json
deleted file mode 100644
index f735466..0000000
--- a/example/.vscode/launch.json
+++ /dev/null
@@ -1,13 +0,0 @@
-{
-    // Use IntelliSense to learn about possible attributes.
-    // Hover to view descriptions of existing attributes.
-    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
-    "version": "0.2.0",
-    "configurations": [
-        {
-            "name": "example",
-            "request": "launch",
-            "type": "dart"
-        }
-    ]
-}
\ No newline at end of file
diff --git a/example/README.md b/example/README.md
index a186d96..2b3fce4 100644
--- a/example/README.md
+++ b/example/README.md
@@ -1,6 +1,6 @@
 # example
 
-Exemplo de uso do package brasil_fields
+A new Flutter project.
 
 ## Getting Started
 
@@ -8,9 +8,9 @@ This project is a starting point for a Flutter application.
 
 A few resources to get you started if this is your first Flutter project:
 
-- [Lab: Write your first Flutter app](https://flutter.dev/docs/get-started/codelab)
-- [Cookbook: Useful Flutter samples](https://flutter.dev/docs/cookbook)
+- [Lab: Write your first Flutter app](https://docs.flutter.dev/get-started/codelab)
+- [Cookbook: Useful Flutter samples](https://docs.flutter.dev/cookbook)
 
-For help getting started with Flutter, view our
-[online documentation](https://flutter.dev/docs), which offers tutorials,
+For help getting started with Flutter development, view the
+[online documentation](https://docs.flutter.dev/), which offers tutorials,
 samples, guidance on mobile development, and a full API reference.
diff --git a/example/analysis_options.yaml b/example/analysis_options.yaml
index 839cc64..61b6c4d 100644
--- a/example/analysis_options.yaml
+++ b/example/analysis_options.yaml
@@ -26,4 +26,4 @@ linter:
     # 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
\ No newline at end of file
+# https://dart.dev/guides/language/analysis-options
diff --git a/example/android/.gitignore b/example/android/.gitignore
index 0a741cb..6f56801 100644
--- a/example/android/.gitignore
+++ b/example/android/.gitignore
@@ -9,3 +9,5 @@ GeneratedPluginRegistrant.java
 # Remember to never publicly share your keystore.
 # See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
 key.properties
+**/*.keystore
+**/*.jks
diff --git a/example/android/app/build.gradle b/example/android/app/build.gradle
index cac3e51..0833ecf 100644
--- a/example/android/app/build.gradle
+++ b/example/android/app/build.gradle
@@ -26,21 +26,29 @@ apply plugin: 'kotlin-android'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 29
+    compileSdkVersion flutter.compileSdkVersion
+    ndkVersion flutter.ndkVersion
 
-    sourceSets {
-        main.java.srcDirs += 'src/main/kotlin'
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    kotlinOptions {
+        jvmTarget = '1.8'
     }
 
-    lintOptions {
-        disable 'InvalidPackage'
+    sourceSets {
+        main.java.srcDirs += 'src/main/kotlin'
     }
 
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
-        applicationId "dev.rubensdemelo.example"
-        minSdkVersion 16
-        targetSdkVersion 29
+        applicationId "com.example.example"
+        // You can update the following values to match your application needs.
+        // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-build-configuration.
+        minSdkVersion flutter.minSdkVersion
+        targetSdkVersion flutter.targetSdkVersion
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
     }
diff --git a/example/android/app/src/debug/AndroidManifest.xml b/example/android/app/src/debug/AndroidManifest.xml
index c116b1c..45d523a 100644
--- a/example/android/app/src/debug/AndroidManifest.xml
+++ b/example/android/app/src/debug/AndroidManifest.xml
@@ -1,6 +1,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="dev.rubensdemelo.example">
-    <!-- Flutter needs it to communicate with the running application
+    package="com.example.example">
+    <!-- The INTERNET permission is required for development. Specifically,
+         the Flutter tool needs it to communicate with the running application
          to allow setting breakpoints, to provide hot reload, etc.
     -->
     <uses-permission android:name="android.permission.INTERNET"/>
diff --git a/example/android/app/src/main/AndroidManifest.xml b/example/android/app/src/main/AndroidManifest.xml
index 919f8cd..3f41384 100644
--- a/example/android/app/src/main/AndroidManifest.xml
+++ b/example/android/app/src/main/AndroidManifest.xml
@@ -1,10 +1,12 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="dev.rubensdemelo.example">
+    package="com.example.example">
    <application
         android:label="example"
+        android:name="${applicationName}"
         android:icon="@mipmap/ic_launcher">
         <activity
             android:name=".MainActivity"
+            android:exported="true"
             android:launchMode="singleTop"
             android:theme="@style/LaunchTheme"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
@@ -18,15 +20,6 @@
               android:name="io.flutter.embedding.android.NormalTheme"
               android:resource="@style/NormalTheme"
               />
-            <!-- Displays an Android View that continues showing the launch screen
-                 Drawable until Flutter paints its first frame, then this splash
-                 screen fades out. A splash screen is useful to avoid any visual
-                 gap between the end of Android's launch screen and the painting of
-                 Flutter's first frame. -->
-            <meta-data
-              android:name="io.flutter.embedding.android.SplashScreenDrawable"
-              android:resource="@drawable/launch_background"
-              />
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
                 <category android:name="android.intent.category.LAUNCHER"/>
diff --git a/example/android/app/src/main/kotlin/dev/rubensdemelo/example/MainActivity.kt b/example/android/app/src/main/kotlin/com/example/example/MainActivity.kt
similarity index 74%
rename from example/android/app/src/main/kotlin/dev/rubensdemelo/example/MainActivity.kt
rename to example/android/app/src/main/kotlin/com/example/example/MainActivity.kt
index ef27efa..e793a00 100644
--- a/example/android/app/src/main/kotlin/dev/rubensdemelo/example/MainActivity.kt
+++ b/example/android/app/src/main/kotlin/com/example/example/MainActivity.kt
@@ -1,4 +1,4 @@
-package dev.rubensdemelo.example
+package com.example.example
 
 import io.flutter.embedding.android.FlutterActivity
 
diff --git a/example/android/app/src/main/res/drawable/launch_background.xml b/example/android/app/src/main/res/drawable/launch_background.xml
index f74085f..304732f 100644
--- a/example/android/app/src/main/res/drawable/launch_background.xml
+++ b/example/android/app/src/main/res/drawable/launch_background.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!-- Modify this file to customize your launch splash screen -->
 <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:drawable="?android:colorBackground" />
+    <item android:drawable="@android:color/white" />
 
     <!-- You can insert your own image assets here -->
     <!-- <item>
diff --git a/example/android/app/src/main/res/values-night/styles.xml b/example/android/app/src/main/res/values-night/styles.xml
index 449a9f9..06952be 100644
--- a/example/android/app/src/main/res/values-night/styles.xml
+++ b/example/android/app/src/main/res/values-night/styles.xml
@@ -3,14 +3,14 @@
     <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is on -->
     <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
         <!-- Show a splash screen on the activity. Automatically removed when
-             Flutter draws its first frame -->
+             the Flutter engine draws its first frame -->
         <item name="android:windowBackground">@drawable/launch_background</item>
     </style>
     <!-- Theme applied to the Android Window as soon as the process has started.
          This theme determines the color of the Android Window while your
          Flutter UI initializes, as well as behind your Flutter UI while its
          running.
-         
+
          This Theme is only used starting with V2 of Flutter's Android embedding. -->
     <style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
         <item name="android:windowBackground">?android:colorBackground</item>
diff --git a/example/android/app/src/main/res/values/styles.xml b/example/android/app/src/main/res/values/styles.xml
index d74aa35..cb1ef88 100644
--- a/example/android/app/src/main/res/values/styles.xml
+++ b/example/android/app/src/main/res/values/styles.xml
@@ -3,14 +3,14 @@
     <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is off -->
     <style name="LaunchTheme" parent="@android:style/Theme.Light.NoTitleBar">
         <!-- Show a splash screen on the activity. Automatically removed when
-             Flutter draws its first frame -->
+             the Flutter engine draws its first frame -->
         <item name="android:windowBackground">@drawable/launch_background</item>
     </style>
     <!-- Theme applied to the Android Window as soon as the process has started.
          This theme determines the color of the Android Window while your
          Flutter UI initializes, as well as behind your Flutter UI while its
          running.
-         
+
          This Theme is only used starting with V2 of Flutter's Android embedding. -->
     <style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
         <item name="android:windowBackground">?android:colorBackground</item>
diff --git a/example/android/app/src/profile/AndroidManifest.xml b/example/android/app/src/profile/AndroidManifest.xml
index c116b1c..45d523a 100644
--- a/example/android/app/src/profile/AndroidManifest.xml
+++ b/example/android/app/src/profile/AndroidManifest.xml
@@ -1,6 +1,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="dev.rubensdemelo.example">
-    <!-- Flutter needs it to communicate with the running application
+    package="com.example.example">
+    <!-- The INTERNET permission is required for development. Specifically,
+         the Flutter tool needs it to communicate with the running application
          to allow setting breakpoints, to provide hot reload, etc.
     -->
     <uses-permission android:name="android.permission.INTERNET"/>
diff --git a/example/android/build.gradle b/example/android/build.gradle
index 3100ad2..83ae220 100644
--- a/example/android/build.gradle
+++ b/example/android/build.gradle
@@ -1,12 +1,12 @@
 buildscript {
-    ext.kotlin_version = '1.3.50'
+    ext.kotlin_version = '1.6.10'
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.0'
+        classpath 'com.android.tools.build:gradle:7.1.2'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }
@@ -14,7 +14,7 @@ buildscript {
 allprojects {
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
 }
 
diff --git a/example/android/gradle.properties b/example/android/gradle.properties
index a673820..94adc3a 100644
--- a/example/android/gradle.properties
+++ b/example/android/gradle.properties
@@ -1,4 +1,3 @@
 org.gradle.jvmargs=-Xmx1536M
 android.useAndroidX=true
 android.enableJetifier=true
-android.enableR8=true
diff --git a/example/android/gradle/wrapper/gradle-wrapper.properties b/example/android/gradle/wrapper/gradle-wrapper.properties
index 296b146..cb24abd 100644
--- a/example/android/gradle/wrapper/gradle-wrapper.properties
+++ b/example/android/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Fri Jun 23 08:50:38 CEST 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-all.zip
diff --git a/example/ios/.gitignore b/example/ios/.gitignore
index e96ef60..7a7f987 100644
--- a/example/ios/.gitignore
+++ b/example/ios/.gitignore
@@ -1,3 +1,4 @@
+**/dgph
 *.mode1v3
 *.mode2v3
 *.moved-aside
@@ -18,6 +19,7 @@ Flutter/App.framework
 Flutter/Flutter.framework
 Flutter/Flutter.podspec
 Flutter/Generated.xcconfig
+Flutter/ephemeral/
 Flutter/app.flx
 Flutter/app.zip
 Flutter/flutter_assets/
diff --git a/example/ios/Flutter/AppFrameworkInfo.plist b/example/ios/Flutter/AppFrameworkInfo.plist
index 6b4c0f7..9625e10 100644
--- a/example/ios/Flutter/AppFrameworkInfo.plist
+++ b/example/ios/Flutter/AppFrameworkInfo.plist
@@ -3,7 +3,7 @@
 <plist version="1.0">
 <dict>
   <key>CFBundleDevelopmentRegion</key>
-  <string>$(DEVELOPMENT_LANGUAGE)</string>
+  <string>en</string>
   <key>CFBundleExecutable</key>
   <string>App</string>
   <key>CFBundleIdentifier</key>
@@ -21,6 +21,6 @@
   <key>CFBundleVersion</key>
   <string>1.0</string>
   <key>MinimumOSVersion</key>
-  <string>8.0</string>
+  <string>11.0</string>
 </dict>
 </plist>
diff --git a/example/ios/Flutter/flutter_export_environment.sh b/example/ios/Flutter/flutter_export_environment.sh
index 7755cd1..0848af7 100755
--- a/example/ios/Flutter/flutter_export_environment.sh
+++ b/example/ios/Flutter/flutter_export_environment.sh
@@ -6,7 +6,7 @@ export "COCOAPODS_PARALLEL_CODE_SIGN=true"
 export "FLUTTER_TARGET=lib/main.dart"
 export "FLUTTER_BUILD_DIR=build"
 export "FLUTTER_BUILD_NAME=1.0.0"
-export "FLUTTER_BUILD_NUMBER=1.0.0"
+export "FLUTTER_BUILD_NUMBER=1"
 export "DART_OBFUSCATION=false"
 export "TRACK_WIDGET_CREATION=true"
 export "TREE_SHAKE_ICONS=false"
diff --git a/example/ios/Runner.xcodeproj/project.pbxproj b/example/ios/Runner.xcodeproj/project.pbxproj
index 1c5e67e..a07e592 100644
--- a/example/ios/Runner.xcodeproj/project.pbxproj
+++ b/example/ios/Runner.xcodeproj/project.pbxproj
@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 46;
+	objectVersion = 50;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -127,7 +127,7 @@
 		97C146E61CF9000F007C117D /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 1020;
+				LastUpgradeCheck = 1300;
 				ORGANIZATIONNAME = "";
 				TargetAttributes = {
 					97C146ED1CF9000F007C117D = {
@@ -272,7 +272,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SUPPORTED_PLATFORMS = iphoneos;
@@ -288,18 +288,14 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
 				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
+				DEVELOPMENT_TEAM = Q857P34S8A;
 				ENABLE_BITCODE = NO;
-				FRAMEWORK_SEARCH_PATHS = (
-					"$(inherited)",
-					"$(PROJECT_DIR)/Flutter",
-				);
 				INFOPLIST_FILE = Runner/Info.plist;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
-				LIBRARY_SEARCH_PATHS = (
+				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
-					"$(PROJECT_DIR)/Flutter",
+					"@executable_path/Frameworks",
 				);
-				PRODUCT_BUNDLE_IDENTIFIER = dev.rubensdemelo.example;
+				PRODUCT_BUNDLE_IDENTIFIER = com.example.example;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
 				SWIFT_VERSION = 5.0;
@@ -354,7 +350,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
@@ -403,11 +399,12 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SUPPORTED_PLATFORMS = iphoneos;
-				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
+				SWIFT_COMPILATION_MODE = wholemodule;
+				SWIFT_OPTIMIZATION_LEVEL = "-O";
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALIDATE_PRODUCT = YES;
 			};
@@ -420,18 +417,14 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
 				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
+				DEVELOPMENT_TEAM = Q857P34S8A;
 				ENABLE_BITCODE = NO;
-				FRAMEWORK_SEARCH_PATHS = (
-					"$(inherited)",
-					"$(PROJECT_DIR)/Flutter",
-				);
 				INFOPLIST_FILE = Runner/Info.plist;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
-				LIBRARY_SEARCH_PATHS = (
+				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
-					"$(PROJECT_DIR)/Flutter",
+					"@executable_path/Frameworks",
 				);
-				PRODUCT_BUNDLE_IDENTIFIER = dev.rubensdemelo.example;
+				PRODUCT_BUNDLE_IDENTIFIER = com.example.example;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
@@ -447,18 +440,14 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
 				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
+				DEVELOPMENT_TEAM = Q857P34S8A;
 				ENABLE_BITCODE = NO;
-				FRAMEWORK_SEARCH_PATHS = (
-					"$(inherited)",
-					"$(PROJECT_DIR)/Flutter",
-				);
 				INFOPLIST_FILE = Runner/Info.plist;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
-				LIBRARY_SEARCH_PATHS = (
+				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
-					"$(PROJECT_DIR)/Flutter",
+					"@executable_path/Frameworks",
 				);
-				PRODUCT_BUNDLE_IDENTIFIER = dev.rubensdemelo.example;
+				PRODUCT_BUNDLE_IDENTIFIER = com.example.example;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
 				SWIFT_VERSION = 5.0;
diff --git a/example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme b/example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
index a28140c..c87d15a 100644
--- a/example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
+++ b/example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1020"
+   LastUpgradeVersion = "1300"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -27,8 +27,6 @@
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       shouldUseLaunchSchemeArgsEnv = "YES">
-      <Testables>
-      </Testables>
       <MacroExpansion>
          <BuildableReference
             BuildableIdentifier = "primary"
@@ -38,8 +36,8 @@
             ReferencedContainer = "container:Runner.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
+      <Testables>
+      </Testables>
    </TestAction>
    <LaunchAction
       buildConfiguration = "Debug"
@@ -61,8 +59,6 @@
             ReferencedContainer = "container:Runner.xcodeproj">
          </BuildableReference>
       </BuildableProductRunnable>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Profile"
diff --git a/example/ios/Runner/Info.plist b/example/ios/Runner/Info.plist
index a060db6..7f55346 100644
--- a/example/ios/Runner/Info.plist
+++ b/example/ios/Runner/Info.plist
@@ -4,6 +4,8 @@
 <dict>
 	<key>CFBundleDevelopmentRegion</key>
 	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleDisplayName</key>
+	<string>Example</string>
 	<key>CFBundleExecutable</key>
 	<string>$(EXECUTABLE_NAME)</string>
 	<key>CFBundleIdentifier</key>
@@ -41,5 +43,9 @@
 	</array>
 	<key>UIViewControllerBasedStatusBarAppearance</key>
 	<false/>
+	<key>CADisableMinimumFrameDurationOnPhone</key>
+	<true/>
+	<key>UIApplicationSupportsIndirectInputEvents</key>
+	<true/>
 </dict>
 </plist>
diff --git a/example/lib/main.dart b/example/lib/main.dart
index eafea8c..e095fb3 100644
--- a/example/lib/main.dart
+++ b/example/lib/main.dart
@@ -5,7 +5,7 @@ import 'package:flutter/services.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -19,12 +19,12 @@ class MyApp extends StatelessWidget {
             bottom: const TabBar(
               tabs: [
                 Tab(
-                  child: Text('Formatters'),
                   icon: Icon(Icons.keyboard),
+                  child: Text('Formatters'),
                 ),
                 Tab(
-                  child: Text('Datas'),
                   icon: Icon(Icons.calendar_today),
+                  child: Text('Datas'),
                 ),
                 Tab(
                   icon: Icon(Icons.smart_display),
@@ -68,11 +68,6 @@ class MyApp extends StatelessWidget {
                       label: 'Hora',
                       formatter: HoraInputFormatter(),
                     ),
-                    RowFormatters(
-                        label: 'Real',
-                        formatter: RealInputFormatter(
-                          moeda: true,
-                        )),
                     RowFormatters(
                         label: 'Centavos', formatter: CentavosInputFormatter()),
                     RowFormatters(
@@ -131,11 +126,9 @@ class MyApp extends StatelessWidget {
 class RowFormatters extends StatelessWidget {
   final String label;
   final TextInputFormatter formatter;
-  const RowFormatters({
-    Key key,
-    this.label,
-    this.formatter,
-  }) : super(key: key);
+
+  const RowFormatters(
+      {super.key, required this.label, required this.formatter});
 
   @override
   Widget build(BuildContext context) {
diff --git a/example/linux/CMakeLists.txt b/example/linux/CMakeLists.txt
index ce45a05..74c66dd 100644
--- a/example/linux/CMakeLists.txt
+++ b/example/linux/CMakeLists.txt
@@ -7,7 +7,7 @@ project(runner LANGUAGES CXX)
 set(BINARY_NAME "example")
 # The unique GTK application identifier for this application. See:
 # https://wiki.gnome.org/HowDoI/ChooseApplicationID
-set(APPLICATION_ID "dev.rubensdemelo.example")
+set(APPLICATION_ID "com.example.example")
 
 # Explicitly opt in to modern CMake behaviors to avoid warnings with recent
 # versions of CMake.
diff --git a/example/macos/Runner/Configs/AppInfo.xcconfig b/example/macos/Runner/Configs/AppInfo.xcconfig
index 91ecacd..dda192b 100644
--- a/example/macos/Runner/Configs/AppInfo.xcconfig
+++ b/example/macos/Runner/Configs/AppInfo.xcconfig
@@ -8,7 +8,7 @@
 PRODUCT_NAME = example
 
 // The application's bundle identifier
-PRODUCT_BUNDLE_IDENTIFIER = dev.rubensdemelo.example
+PRODUCT_BUNDLE_IDENTIFIER = com.example.example
 
 // The copyright displayed in application information
-PRODUCT_COPYRIGHT = Copyright © 2022 dev.rubensdemelo. All rights reserved.
+PRODUCT_COPYRIGHT = Copyright © 2023 com.example. All rights reserved.
diff --git a/example/pubspec.lock b/example/pubspec.lock
index ee4c347..400aa47 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -21,7 +21,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "1.9.0"
+    version: "1.9.1"
   characters:
     dependency: transitive
     description:
@@ -61,7 +61,7 @@ packages:
       name: flutter_lints
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.4"
+    version: "2.0.1"
   flutter_test:
     dependency: "direct dev"
     description: flutter
@@ -80,7 +80,7 @@ packages:
       name: lints
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.1"
+    version: "2.0.1"
   matcher:
     dependency: transitive
     description:
@@ -164,4 +164,4 @@ packages:
     source: hosted
     version: "2.1.2"
 sdks:
-  dart: ">=2.17.0-0 <3.0.0"
+  dart: ">=2.18.6 <3.0.0"
diff --git a/example/pubspec.yaml b/example/pubspec.yaml
index c49f60f..1af5866 100644
--- a/example/pubspec.yaml
+++ b/example/pubspec.yaml
@@ -1,13 +1,17 @@
 name: example
 description: Exemplo de uso do package brasil_fields
-
-publish_to: 'none'
-
 version: 1.0.0
+publish_to: none
 
 environment:
-  sdk: ">=2.7.0 <3.0.0"
+  sdk: '>=2.18.6 <3.0.0'
 
+# Dependencies specify other packages that your package needs in order to work.
+# To automatically upgrade your package dependencies to the latest versions
+# consider running `flutter pub upgrade --major-versions`. Alternatively,
+# dependencies can be manually updated by changing the version numbers below to
+# the latest version available on pub.dev. To see which dependencies have newer
+# versions available, run `flutter pub outdated`.
 dependencies:
   flutter:
     sdk: flutter
@@ -15,9 +19,9 @@ dependencies:
     path: ../
 
 dev_dependencies:
-  flutter_lints: ^1.0.4
   flutter_test:
     sdk: flutter
+  flutter_lints: ^2.0.0
 
 flutter:
   uses-material-design: true
\ No newline at end of file
diff --git a/example/test/widget_test.dart b/example/test/widget_test.dart
deleted file mode 100644
index 092d222..0000000
--- a/example/test/widget_test.dart
+++ /dev/null
@@ -1,30 +0,0 @@
-// This is a basic Flutter widget test.
-//
-// To perform an interaction with a widget in your test, use the WidgetTester
-// utility in the flutter_test package. For example, you can send tap and scroll
-// gestures. You can also use WidgetTester to find child widgets in the widget
-// tree, read text, and verify that the values of widget properties are correct.
-
-import 'package:flutter/material.dart';
-import 'package:flutter_test/flutter_test.dart';
-
-import 'package:example/main.dart';
-
-void main() {
-  testWidgets('Counter increments smoke test', (WidgetTester tester) async {
-    // Build our app and trigger a frame.
-    await tester.pumpWidget(const MyApp());
-
-    // Verify that our counter starts at 0.
-    expect(find.text('0'), findsOneWidget);
-    expect(find.text('1'), findsNothing);
-
-    // Tap the '+' icon and trigger a frame.
-    await tester.tap(find.byIcon(Icons.add));
-    await tester.pump();
-
-    // Verify that our counter has incremented.
-    expect(find.text('0'), findsNothing);
-    expect(find.text('1'), findsOneWidget);
-  });
-}
diff --git a/example/web/index.html b/example/web/index.html
index b6b9dd2..41b3bc3 100644
--- a/example/web/index.html
+++ b/example/web/index.html
@@ -31,74 +31,28 @@
 
   <title>example</title>
   <link rel="manifest" href="manifest.json">
+
+  <script>
+    // The value below is injected by flutter build, do not touch.
+    var serviceWorkerVersion = null;
+  </script>
+  <!-- This script adds the flutter initialization JS code -->
+  <script src="flutter.js" defer></script>
 </head>
 <body>
-  <!-- This script installs service_worker.js to provide PWA functionality to
-       application. For more information, see:
-       https://developers.google.com/web/fundamentals/primers/service-workers -->
   <script>
-    var serviceWorkerVersion = null;
-    var scriptLoaded = false;
-    function loadMainDartJs() {
-      if (scriptLoaded) {
-        return;
-      }
-      scriptLoaded = true;
-      var scriptTag = document.createElement('script');
-      scriptTag.src = 'main.dart.js';
-      scriptTag.type = 'application/javascript';
-      document.body.append(scriptTag);
-    }
-
-    if ('serviceWorker' in navigator) {
-      // Service workers are supported. Use them.
-      window.addEventListener('load', function () {
-        // Wait for registration to finish before dropping the <script> tag.
-        // Otherwise, the browser will load the script multiple times,
-        // potentially different versions.
-        var serviceWorkerUrl = 'flutter_service_worker.js?v=' + serviceWorkerVersion;
-        navigator.serviceWorker.register(serviceWorkerUrl)
-          .then((reg) => {
-            function waitForActivation(serviceWorker) {
-              serviceWorker.addEventListener('statechange', () => {
-                if (serviceWorker.state == 'activated') {
-                  console.log('Installed new service worker.');
-                  loadMainDartJs();
-                }
-              });
-            }
-            if (!reg.active && (reg.installing || reg.waiting)) {
-              // No active web worker and we have installed or are installing
-              // one for the first time. Simply wait for it to activate.
-              waitForActivation(reg.installing || reg.waiting);
-            } else if (!reg.active.scriptURL.endsWith(serviceWorkerVersion)) {
-              // When the app updates the serviceWorkerVersion changes, so we
-              // need to ask the service worker to update.
-              console.log('New service worker available.');
-              reg.update();
-              waitForActivation(reg.installing);
-            } else {
-              // Existing service worker is still good.
-              console.log('Loading app from service worker.');
-              loadMainDartJs();
-            }
-          });
-
-        // If service worker doesn't succeed in a reasonable amount of time,
-        // fallback to plaint <script> tag.
-        setTimeout(() => {
-          if (!scriptLoaded) {
-            console.warn(
-              'Failed to load app from service worker. Falling back to plain <script> tag.',
-            );
-            loadMainDartJs();
-          }
-        }, 4000);
+    window.addEventListener('load', function(ev) {
+      // Download main.dart.js
+      _flutter.loader.loadEntrypoint({
+        serviceWorker: {
+          serviceWorkerVersion: serviceWorkerVersion,
+        }
+      }).then(function(engineInitializer) {
+        return engineInitializer.initializeEngine();
+      }).then(function(appRunner) {
+        return appRunner.runApp();
       });
-    } else {
-      // Service workers not supported. Just drop the <script> tag.
-      loadMainDartJs();
-    }
+    });
   </script>
 </body>
 </html>
diff --git a/example/windows/.gitignore b/example/windows/.gitignore
new file mode 100644
index 0000000..d492d0d
--- /dev/null
+++ b/example/windows/.gitignore
@@ -0,0 +1,17 @@
+flutter/ephemeral/
+
+# Visual Studio user-specific files.
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# Visual Studio build-related files.
+x64/
+x86/
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!*.[Cc]ache/
diff --git a/example/windows/CMakeLists.txt b/example/windows/CMakeLists.txt
new file mode 100644
index 0000000..c027074
--- /dev/null
+++ b/example/windows/CMakeLists.txt
@@ -0,0 +1,101 @@
+# Project-level configuration.
+cmake_minimum_required(VERSION 3.14)
+project(example LANGUAGES CXX)
+
+# The name of the executable created for the application. Change this to change
+# the on-disk name of your application.
+set(BINARY_NAME "example")
+
+# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
+# versions of CMake.
+cmake_policy(SET CMP0063 NEW)
+
+# Define build configuration option.
+get_property(IS_MULTICONFIG GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
+if(IS_MULTICONFIG)
+  set(CMAKE_CONFIGURATION_TYPES "Debug;Profile;Release"
+    CACHE STRING "" FORCE)
+else()
+  if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+    set(CMAKE_BUILD_TYPE "Debug" CACHE
+      STRING "Flutter build mode" FORCE)
+    set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+      "Debug" "Profile" "Release")
+  endif()
+endif()
+# Define settings for the Profile build mode.
+set(CMAKE_EXE_LINKER_FLAGS_PROFILE "${CMAKE_EXE_LINKER_FLAGS_RELEASE}")
+set(CMAKE_SHARED_LINKER_FLAGS_PROFILE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE}")
+set(CMAKE_C_FLAGS_PROFILE "${CMAKE_C_FLAGS_RELEASE}")
+set(CMAKE_CXX_FLAGS_PROFILE "${CMAKE_CXX_FLAGS_RELEASE}")
+
+# Use Unicode for all projects.
+add_definitions(-DUNICODE -D_UNICODE)
+
+# Compilation settings that should be applied to most targets.
+#
+# Be cautious about adding new options here, as plugins use this function by
+# default. In most cases, you should add new options to specific targets instead
+# of modifying this function.
+function(APPLY_STANDARD_SETTINGS TARGET)
+  target_compile_features(${TARGET} PUBLIC cxx_std_17)
+  target_compile_options(${TARGET} PRIVATE /W4 /WX /wd"4100")
+  target_compile_options(${TARGET} PRIVATE /EHsc)
+  target_compile_definitions(${TARGET} PRIVATE "_HAS_EXCEPTIONS=0")
+  target_compile_definitions(${TARGET} PRIVATE "$<$<CONFIG:Debug>:_DEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# Application build; see runner/CMakeLists.txt.
+add_subdirectory("runner")
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# Support files are copied into place next to the executable, so that it can
+# run in place. This is done instead of making a separate bundle (as on Linux)
+# so that building and running from within Visual Studio will work.
+set(BUILD_BUNDLE_DIR "$<TARGET_FILE_DIR:${BINARY_NAME}>")
+# Make the "install" step default, as it's required to run.
+set(CMAKE_VS_INCLUDE_INSTALL_TO_DEFAULT_BUILD 1)
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+  COMPONENT Runtime)
+
+if(PLUGIN_BUNDLED_LIBRARIES)
+  install(FILES "${PLUGIN_BUNDLED_LIBRARIES}"
+    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endif()
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+  " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  CONFIGURATIONS Profile;Release
+  COMPONENT Runtime)
diff --git a/example/windows/flutter/CMakeLists.txt b/example/windows/flutter/CMakeLists.txt
new file mode 100644
index 0000000..930d207
--- /dev/null
+++ b/example/windows/flutter/CMakeLists.txt
@@ -0,0 +1,104 @@
+# This file controls Flutter-level build steps. It should not be edited.
+cmake_minimum_required(VERSION 3.14)
+
+set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
+
+# Configuration provided via flutter tool.
+include(${EPHEMERAL_DIR}/generated_config.cmake)
+
+# TODO: Move the rest of this into files in ephemeral. See
+# https://github.com/flutter/flutter/issues/57146.
+set(WRAPPER_ROOT "${EPHEMERAL_DIR}/cpp_client_wrapper")
+
+# === Flutter Library ===
+set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/flutter_windows.dll")
+
+# Published to parent scope for install step.
+set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
+set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
+set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
+set(AOT_LIBRARY "${PROJECT_DIR}/build/windows/app.so" PARENT_SCOPE)
+
+list(APPEND FLUTTER_LIBRARY_HEADERS
+  "flutter_export.h"
+  "flutter_windows.h"
+  "flutter_messenger.h"
+  "flutter_plugin_registrar.h"
+  "flutter_texture_registrar.h"
+)
+list(TRANSFORM FLUTTER_LIBRARY_HEADERS PREPEND "${EPHEMERAL_DIR}/")
+add_library(flutter INTERFACE)
+target_include_directories(flutter INTERFACE
+  "${EPHEMERAL_DIR}"
+)
+target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}.lib")
+add_dependencies(flutter flutter_assemble)
+
+# === Wrapper ===
+list(APPEND CPP_WRAPPER_SOURCES_CORE
+  "core_implementations.cc"
+  "standard_codec.cc"
+)
+list(TRANSFORM CPP_WRAPPER_SOURCES_CORE PREPEND "${WRAPPER_ROOT}/")
+list(APPEND CPP_WRAPPER_SOURCES_PLUGIN
+  "plugin_registrar.cc"
+)
+list(TRANSFORM CPP_WRAPPER_SOURCES_PLUGIN PREPEND "${WRAPPER_ROOT}/")
+list(APPEND CPP_WRAPPER_SOURCES_APP
+  "flutter_engine.cc"
+  "flutter_view_controller.cc"
+)
+list(TRANSFORM CPP_WRAPPER_SOURCES_APP PREPEND "${WRAPPER_ROOT}/")
+
+# Wrapper sources needed for a plugin.
+add_library(flutter_wrapper_plugin STATIC
+  ${CPP_WRAPPER_SOURCES_CORE}
+  ${CPP_WRAPPER_SOURCES_PLUGIN}
+)
+apply_standard_settings(flutter_wrapper_plugin)
+set_target_properties(flutter_wrapper_plugin PROPERTIES
+  POSITION_INDEPENDENT_CODE ON)
+set_target_properties(flutter_wrapper_plugin PROPERTIES
+  CXX_VISIBILITY_PRESET hidden)
+target_link_libraries(flutter_wrapper_plugin PUBLIC flutter)
+target_include_directories(flutter_wrapper_plugin PUBLIC
+  "${WRAPPER_ROOT}/include"
+)
+add_dependencies(flutter_wrapper_plugin flutter_assemble)
+
+# Wrapper sources needed for the runner.
+add_library(flutter_wrapper_app STATIC
+  ${CPP_WRAPPER_SOURCES_CORE}
+  ${CPP_WRAPPER_SOURCES_APP}
+)
+apply_standard_settings(flutter_wrapper_app)
+target_link_libraries(flutter_wrapper_app PUBLIC flutter)
+target_include_directories(flutter_wrapper_app PUBLIC
+  "${WRAPPER_ROOT}/include"
+)
+add_dependencies(flutter_wrapper_app flutter_assemble)
+
+# === Flutter tool backend ===
+# _phony_ is a non-existent file to force this command to run every time,
+# since currently there's no way to get a full input/output list from the
+# flutter tool.
+set(PHONY_OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/_phony_")
+set_source_files_properties("${PHONY_OUTPUT}" PROPERTIES SYMBOLIC TRUE)
+add_custom_command(
+  OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
+    ${CPP_WRAPPER_SOURCES_CORE} ${CPP_WRAPPER_SOURCES_PLUGIN}
+    ${CPP_WRAPPER_SOURCES_APP}
+    ${PHONY_OUTPUT}
+  COMMAND ${CMAKE_COMMAND} -E env
+    ${FLUTTER_TOOL_ENVIRONMENT}
+    "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.bat"
+      windows-x64 $<CONFIG>
+  VERBATIM
+)
+add_custom_target(flutter_assemble DEPENDS
+  "${FLUTTER_LIBRARY}"
+  ${FLUTTER_LIBRARY_HEADERS}
+  ${CPP_WRAPPER_SOURCES_CORE}
+  ${CPP_WRAPPER_SOURCES_PLUGIN}
+  ${CPP_WRAPPER_SOURCES_APP}
+)
diff --git a/example/windows/flutter/generated_plugin_registrant.cc b/example/windows/flutter/generated_plugin_registrant.cc
new file mode 100644
index 0000000..8b6d468
--- /dev/null
+++ b/example/windows/flutter/generated_plugin_registrant.cc
@@ -0,0 +1,11 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+
+void RegisterPlugins(flutter::PluginRegistry* registry) {
+}
diff --git a/example/windows/flutter/generated_plugin_registrant.h b/example/windows/flutter/generated_plugin_registrant.h
new file mode 100644
index 0000000..dc139d8
--- /dev/null
+++ b/example/windows/flutter/generated_plugin_registrant.h
@@ -0,0 +1,15 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#ifndef GENERATED_PLUGIN_REGISTRANT_
+#define GENERATED_PLUGIN_REGISTRANT_
+
+#include <flutter/plugin_registry.h>
+
+// Registers Flutter plugins.
+void RegisterPlugins(flutter::PluginRegistry* registry);
+
+#endif  // GENERATED_PLUGIN_REGISTRANT_
diff --git a/example/windows/flutter/generated_plugins.cmake b/example/windows/flutter/generated_plugins.cmake
new file mode 100644
index 0000000..b93c4c3
--- /dev/null
+++ b/example/windows/flutter/generated_plugins.cmake
@@ -0,0 +1,23 @@
+#
+# Generated file, do not edit.
+#
+
+list(APPEND FLUTTER_PLUGIN_LIST
+)
+
+list(APPEND FLUTTER_FFI_PLUGIN_LIST
+)
+
+set(PLUGIN_BUNDLED_LIBRARIES)
+
+foreach(plugin ${FLUTTER_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/windows plugins/${plugin})
+  target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
+endforeach(plugin)
+
+foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/windows plugins/${ffi_plugin})
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
+endforeach(ffi_plugin)
diff --git a/example/windows/runner/CMakeLists.txt b/example/windows/runner/CMakeLists.txt
new file mode 100644
index 0000000..17411a8
--- /dev/null
+++ b/example/windows/runner/CMakeLists.txt
@@ -0,0 +1,39 @@
+cmake_minimum_required(VERSION 3.14)
+project(runner LANGUAGES CXX)
+
+# Define the application target. To change its name, change BINARY_NAME in the
+# top-level CMakeLists.txt, not the value here, or `flutter run` will no longer
+# work.
+#
+# Any new source files that you add to the application should be added here.
+add_executable(${BINARY_NAME} WIN32
+  "flutter_window.cpp"
+  "main.cpp"
+  "utils.cpp"
+  "win32_window.cpp"
+  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
+  "Runner.rc"
+  "runner.exe.manifest"
+)
+
+# Apply the standard set of build settings. This can be removed for applications
+# that need different build settings.
+apply_standard_settings(${BINARY_NAME})
+
+# Add preprocessor definitions for the build version.
+target_compile_definitions(${BINARY_NAME} PRIVATE "FLUTTER_VERSION=\"${FLUTTER_VERSION}\"")
+target_compile_definitions(${BINARY_NAME} PRIVATE "FLUTTER_VERSION_MAJOR=${FLUTTER_VERSION_MAJOR}")
+target_compile_definitions(${BINARY_NAME} PRIVATE "FLUTTER_VERSION_MINOR=${FLUTTER_VERSION_MINOR}")
+target_compile_definitions(${BINARY_NAME} PRIVATE "FLUTTER_VERSION_PATCH=${FLUTTER_VERSION_PATCH}")
+target_compile_definitions(${BINARY_NAME} PRIVATE "FLUTTER_VERSION_BUILD=${FLUTTER_VERSION_BUILD}")
+
+# Disable Windows macros that collide with C++ standard library functions.
+target_compile_definitions(${BINARY_NAME} PRIVATE "NOMINMAX")
+
+# Add dependency libraries and include directories. Add any application-specific
+# dependencies here.
+target_link_libraries(${BINARY_NAME} PRIVATE flutter flutter_wrapper_app)
+target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
+
+# Run the Flutter tool portions of the build. This must not be removed.
+add_dependencies(${BINARY_NAME} flutter_assemble)
diff --git a/example/windows/runner/Runner.rc b/example/windows/runner/Runner.rc
new file mode 100644
index 0000000..aecaa2b
--- /dev/null
+++ b/example/windows/runner/Runner.rc
@@ -0,0 +1,121 @@
+// Microsoft Visual C++ generated resource script.
+//
+#pragma code_page(65001)
+#include "resource.h"
+
+#define APSTUDIO_READONLY_SYMBOLS
+/////////////////////////////////////////////////////////////////////////////
+//
+// Generated from the TEXTINCLUDE 2 resource.
+//
+#include "winres.h"
+
+/////////////////////////////////////////////////////////////////////////////
+#undef APSTUDIO_READONLY_SYMBOLS
+
+/////////////////////////////////////////////////////////////////////////////
+// English (United States) resources
+
+#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENU)
+LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
+
+#ifdef APSTUDIO_INVOKED
+/////////////////////////////////////////////////////////////////////////////
+//
+// TEXTINCLUDE
+//
+
+1 TEXTINCLUDE
+BEGIN
+    "resource.h\0"
+END
+
+2 TEXTINCLUDE
+BEGIN
+    "#include ""winres.h""\r\n"
+    "\0"
+END
+
+3 TEXTINCLUDE
+BEGIN
+    "\r\n"
+    "\0"
+END
+
+#endif    // APSTUDIO_INVOKED
+
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Icon
+//
+
+// Icon with lowest ID value placed first to ensure application icon
+// remains consistent on all systems.
+IDI_APP_ICON            ICON                    "resources\\app_icon.ico"
+
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Version
+//
+
+#if defined(FLUTTER_VERSION_MAJOR) && defined(FLUTTER_VERSION_MINOR) && defined(FLUTTER_VERSION_PATCH) && defined(FLUTTER_VERSION_BUILD)
+#define VERSION_AS_NUMBER FLUTTER_VERSION_MAJOR,FLUTTER_VERSION_MINOR,FLUTTER_VERSION_PATCH,FLUTTER_VERSION_BUILD
+#else
+#define VERSION_AS_NUMBER 1,0,0,0
+#endif
+
+#if defined(FLUTTER_VERSION)
+#define VERSION_AS_STRING FLUTTER_VERSION
+#else
+#define VERSION_AS_STRING "1.0.0"
+#endif
+
+VS_VERSION_INFO VERSIONINFO
+ FILEVERSION VERSION_AS_NUMBER
+ PRODUCTVERSION VERSION_AS_NUMBER
+ FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
+#ifdef _DEBUG
+ FILEFLAGS VS_FF_DEBUG
+#else
+ FILEFLAGS 0x0L
+#endif
+ FILEOS VOS__WINDOWS32
+ FILETYPE VFT_APP
+ FILESUBTYPE 0x0L
+BEGIN
+    BLOCK "StringFileInfo"
+    BEGIN
+        BLOCK "040904e4"
+        BEGIN
+            VALUE "CompanyName", "com.example" "\0"
+            VALUE "FileDescription", "example" "\0"
+            VALUE "FileVersion", VERSION_AS_STRING "\0"
+            VALUE "InternalName", "example" "\0"
+            VALUE "LegalCopyright", "Copyright (C) 2023 com.example. All rights reserved." "\0"
+            VALUE "OriginalFilename", "example.exe" "\0"
+            VALUE "ProductName", "example" "\0"
+            VALUE "ProductVersion", VERSION_AS_STRING "\0"
+        END
+    END
+    BLOCK "VarFileInfo"
+    BEGIN
+        VALUE "Translation", 0x409, 1252
+    END
+END
+
+#endif    // English (United States) resources
+/////////////////////////////////////////////////////////////////////////////
+
+
+
+#ifndef APSTUDIO_INVOKED
+/////////////////////////////////////////////////////////////////////////////
+//
+// Generated from the TEXTINCLUDE 3 resource.
+//
+
+
+/////////////////////////////////////////////////////////////////////////////
+#endif    // not APSTUDIO_INVOKED
diff --git a/example/windows/runner/flutter_window.cpp b/example/windows/runner/flutter_window.cpp
new file mode 100644
index 0000000..b43b909
--- /dev/null
+++ b/example/windows/runner/flutter_window.cpp
@@ -0,0 +1,61 @@
+#include "flutter_window.h"
+
+#include <optional>
+
+#include "flutter/generated_plugin_registrant.h"
+
+FlutterWindow::FlutterWindow(const flutter::DartProject& project)
+    : project_(project) {}
+
+FlutterWindow::~FlutterWindow() {}
+
+bool FlutterWindow::OnCreate() {
+  if (!Win32Window::OnCreate()) {
+    return false;
+  }
+
+  RECT frame = GetClientArea();
+
+  // The size here must match the window dimensions to avoid unnecessary surface
+  // creation / destruction in the startup path.
+  flutter_controller_ = std::make_unique<flutter::FlutterViewController>(
+      frame.right - frame.left, frame.bottom - frame.top, project_);
+  // Ensure that basic setup of the controller was successful.
+  if (!flutter_controller_->engine() || !flutter_controller_->view()) {
+    return false;
+  }
+  RegisterPlugins(flutter_controller_->engine());
+  SetChildContent(flutter_controller_->view()->GetNativeWindow());
+  return true;
+}
+
+void FlutterWindow::OnDestroy() {
+  if (flutter_controller_) {
+    flutter_controller_ = nullptr;
+  }
+
+  Win32Window::OnDestroy();
+}
+
+LRESULT
+FlutterWindow::MessageHandler(HWND hwnd, UINT const message,
+                              WPARAM const wparam,
+                              LPARAM const lparam) noexcept {
+  // Give Flutter, including plugins, an opportunity to handle window messages.
+  if (flutter_controller_) {
+    std::optional<LRESULT> result =
+        flutter_controller_->HandleTopLevelWindowProc(hwnd, message, wparam,
+                                                      lparam);
+    if (result) {
+      return *result;
+    }
+  }
+
+  switch (message) {
+    case WM_FONTCHANGE:
+      flutter_controller_->engine()->ReloadSystemFonts();
+      break;
+  }
+
+  return Win32Window::MessageHandler(hwnd, message, wparam, lparam);
+}
diff --git a/example/windows/runner/flutter_window.h b/example/windows/runner/flutter_window.h
new file mode 100644
index 0000000..6da0652
--- /dev/null
+++ b/example/windows/runner/flutter_window.h
@@ -0,0 +1,33 @@
+#ifndef RUNNER_FLUTTER_WINDOW_H_
+#define RUNNER_FLUTTER_WINDOW_H_
+
+#include <flutter/dart_project.h>
+#include <flutter/flutter_view_controller.h>
+
+#include <memory>
+
+#include "win32_window.h"
+
+// A window that does nothing but host a Flutter view.
+class FlutterWindow : public Win32Window {
+ public:
+  // Creates a new FlutterWindow hosting a Flutter view running |project|.
+  explicit FlutterWindow(const flutter::DartProject& project);
+  virtual ~FlutterWindow();
+
+ protected:
+  // Win32Window:
+  bool OnCreate() override;
+  void OnDestroy() override;
+  LRESULT MessageHandler(HWND window, UINT const message, WPARAM const wparam,
+                         LPARAM const lparam) noexcept override;
+
+ private:
+  // The project to run.
+  flutter::DartProject project_;
+
+  // The Flutter instance hosted by this window.
+  std::unique_ptr<flutter::FlutterViewController> flutter_controller_;
+};
+
+#endif  // RUNNER_FLUTTER_WINDOW_H_
diff --git a/example/windows/runner/main.cpp b/example/windows/runner/main.cpp
new file mode 100644
index 0000000..bcb57b0
--- /dev/null
+++ b/example/windows/runner/main.cpp
@@ -0,0 +1,43 @@
+#include <flutter/dart_project.h>
+#include <flutter/flutter_view_controller.h>
+#include <windows.h>
+
+#include "flutter_window.h"
+#include "utils.h"
+
+int APIENTRY wWinMain(_In_ HINSTANCE instance, _In_opt_ HINSTANCE prev,
+                      _In_ wchar_t *command_line, _In_ int show_command) {
+  // Attach to console when present (e.g., 'flutter run') or create a
+  // new console when running with a debugger.
+  if (!::AttachConsole(ATTACH_PARENT_PROCESS) && ::IsDebuggerPresent()) {
+    CreateAndAttachConsole();
+  }
+
+  // Initialize COM, so that it is available for use in the library and/or
+  // plugins.
+  ::CoInitializeEx(nullptr, COINIT_APARTMENTTHREADED);
+
+  flutter::DartProject project(L"data");
+
+  std::vector<std::string> command_line_arguments =
+      GetCommandLineArguments();
+
+  project.set_dart_entrypoint_arguments(std::move(command_line_arguments));
+
+  FlutterWindow window(project);
+  Win32Window::Point origin(10, 10);
+  Win32Window::Size size(1280, 720);
+  if (!window.CreateAndShow(L"example", origin, size)) {
+    return EXIT_FAILURE;
+  }
+  window.SetQuitOnClose(true);
+
+  ::MSG msg;
+  while (::GetMessage(&msg, nullptr, 0, 0)) {
+    ::TranslateMessage(&msg);
+    ::DispatchMessage(&msg);
+  }
+
+  ::CoUninitialize();
+  return EXIT_SUCCESS;
+}
diff --git a/example/windows/runner/resource.h b/example/windows/runner/resource.h
new file mode 100644
index 0000000..66a65d1
--- /dev/null
+++ b/example/windows/runner/resource.h
@@ -0,0 +1,16 @@
+//{{NO_DEPENDENCIES}}
+// Microsoft Visual C++ generated include file.
+// Used by Runner.rc
+//
+#define IDI_APP_ICON                    101
+
+// Next default values for new objects
+//
+#ifdef APSTUDIO_INVOKED
+#ifndef APSTUDIO_READONLY_SYMBOLS
+#define _APS_NEXT_RESOURCE_VALUE        102
+#define _APS_NEXT_COMMAND_VALUE         40001
+#define _APS_NEXT_CONTROL_VALUE         1001
+#define _APS_NEXT_SYMED_VALUE           101
+#endif
+#endif
diff --git a/example/windows/runner/resources/app_icon.ico b/example/windows/runner/resources/app_icon.ico
new file mode 100644
index 0000000..c04e20c
Binary files /dev/null and b/example/windows/runner/resources/app_icon.ico differ
diff --git a/example/windows/runner/runner.exe.manifest b/example/windows/runner/runner.exe.manifest
new file mode 100644
index 0000000..a42ea76
--- /dev/null
+++ b/example/windows/runner/runner.exe.manifest
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
+  <application xmlns="urn:schemas-microsoft-com:asm.v3">
+    <windowsSettings>
+      <dpiAwareness xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">PerMonitorV2</dpiAwareness>
+    </windowsSettings>
+  </application>
+  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+    <application>
+      <!-- Windows 10 and Windows 11 -->
+      <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}"/>
+      <!-- Windows 8.1 -->
+      <supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}"/>
+      <!-- Windows 8 -->
+      <supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}"/>
+      <!-- Windows 7 -->
+      <supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>
+    </application>
+  </compatibility>
+</assembly>
diff --git a/example/windows/runner/utils.cpp b/example/windows/runner/utils.cpp
new file mode 100644
index 0000000..f5bf9fa
--- /dev/null
+++ b/example/windows/runner/utils.cpp
@@ -0,0 +1,64 @@
+#include "utils.h"
+
+#include <flutter_windows.h>
+#include <io.h>
+#include <stdio.h>
+#include <windows.h>
+
+#include <iostream>
+
+void CreateAndAttachConsole() {
+  if (::AllocConsole()) {
+    FILE *unused;
+    if (freopen_s(&unused, "CONOUT$", "w", stdout)) {
+      _dup2(_fileno(stdout), 1);
+    }
+    if (freopen_s(&unused, "CONOUT$", "w", stderr)) {
+      _dup2(_fileno(stdout), 2);
+    }
+    std::ios::sync_with_stdio();
+    FlutterDesktopResyncOutputStreams();
+  }
+}
+
+std::vector<std::string> GetCommandLineArguments() {
+  // Convert the UTF-16 command line arguments to UTF-8 for the Engine to use.
+  int argc;
+  wchar_t** argv = ::CommandLineToArgvW(::GetCommandLineW(), &argc);
+  if (argv == nullptr) {
+    return std::vector<std::string>();
+  }
+
+  std::vector<std::string> command_line_arguments;
+
+  // Skip the first argument as it's the binary name.
+  for (int i = 1; i < argc; i++) {
+    command_line_arguments.push_back(Utf8FromUtf16(argv[i]));
+  }
+
+  ::LocalFree(argv);
+
+  return command_line_arguments;
+}
+
+std::string Utf8FromUtf16(const wchar_t* utf16_string) {
+  if (utf16_string == nullptr) {
+    return std::string();
+  }
+  int target_length = ::WideCharToMultiByte(
+      CP_UTF8, WC_ERR_INVALID_CHARS, utf16_string,
+      -1, nullptr, 0, nullptr, nullptr);
+  std::string utf8_string;
+  if (target_length == 0 || target_length > utf8_string.max_size()) {
+    return utf8_string;
+  }
+  utf8_string.resize(target_length);
+  int converted_length = ::WideCharToMultiByte(
+      CP_UTF8, WC_ERR_INVALID_CHARS, utf16_string,
+      -1, utf8_string.data(),
+      target_length, nullptr, nullptr);
+  if (converted_length == 0) {
+    return std::string();
+  }
+  return utf8_string;
+}
diff --git a/example/windows/runner/utils.h b/example/windows/runner/utils.h
new file mode 100644
index 0000000..3879d54
--- /dev/null
+++ b/example/windows/runner/utils.h
@@ -0,0 +1,19 @@
+#ifndef RUNNER_UTILS_H_
+#define RUNNER_UTILS_H_
+
+#include <string>
+#include <vector>
+
+// Creates a console for the process, and redirects stdout and stderr to
+// it for both the runner and the Flutter library.
+void CreateAndAttachConsole();
+
+// Takes a null-terminated wchar_t* encoded in UTF-16 and returns a std::string
+// encoded in UTF-8. Returns an empty std::string on failure.
+std::string Utf8FromUtf16(const wchar_t* utf16_string);
+
+// Gets the command line arguments passed in as a std::vector<std::string>,
+// encoded in UTF-8. Returns an empty std::vector<std::string> on failure.
+std::vector<std::string> GetCommandLineArguments();
+
+#endif  // RUNNER_UTILS_H_
diff --git a/example/windows/runner/win32_window.cpp b/example/windows/runner/win32_window.cpp
new file mode 100644
index 0000000..c10f08d
--- /dev/null
+++ b/example/windows/runner/win32_window.cpp
@@ -0,0 +1,245 @@
+#include "win32_window.h"
+
+#include <flutter_windows.h>
+
+#include "resource.h"
+
+namespace {
+
+constexpr const wchar_t kWindowClassName[] = L"FLUTTER_RUNNER_WIN32_WINDOW";
+
+// The number of Win32Window objects that currently exist.
+static int g_active_window_count = 0;
+
+using EnableNonClientDpiScaling = BOOL __stdcall(HWND hwnd);
+
+// Scale helper to convert logical scaler values to physical using passed in
+// scale factor
+int Scale(int source, double scale_factor) {
+  return static_cast<int>(source * scale_factor);
+}
+
+// Dynamically loads the |EnableNonClientDpiScaling| from the User32 module.
+// This API is only needed for PerMonitor V1 awareness mode.
+void EnableFullDpiSupportIfAvailable(HWND hwnd) {
+  HMODULE user32_module = LoadLibraryA("User32.dll");
+  if (!user32_module) {
+    return;
+  }
+  auto enable_non_client_dpi_scaling =
+      reinterpret_cast<EnableNonClientDpiScaling*>(
+          GetProcAddress(user32_module, "EnableNonClientDpiScaling"));
+  if (enable_non_client_dpi_scaling != nullptr) {
+    enable_non_client_dpi_scaling(hwnd);
+    FreeLibrary(user32_module);
+  }
+}
+
+}  // namespace
+
+// Manages the Win32Window's window class registration.
+class WindowClassRegistrar {
+ public:
+  ~WindowClassRegistrar() = default;
+
+  // Returns the singleton registar instance.
+  static WindowClassRegistrar* GetInstance() {
+    if (!instance_) {
+      instance_ = new WindowClassRegistrar();
+    }
+    return instance_;
+  }
+
+  // Returns the name of the window class, registering the class if it hasn't
+  // previously been registered.
+  const wchar_t* GetWindowClass();
+
+  // Unregisters the window class. Should only be called if there are no
+  // instances of the window.
+  void UnregisterWindowClass();
+
+ private:
+  WindowClassRegistrar() = default;
+
+  static WindowClassRegistrar* instance_;
+
+  bool class_registered_ = false;
+};
+
+WindowClassRegistrar* WindowClassRegistrar::instance_ = nullptr;
+
+const wchar_t* WindowClassRegistrar::GetWindowClass() {
+  if (!class_registered_) {
+    WNDCLASS window_class{};
+    window_class.hCursor = LoadCursor(nullptr, IDC_ARROW);
+    window_class.lpszClassName = kWindowClassName;
+    window_class.style = CS_HREDRAW | CS_VREDRAW;
+    window_class.cbClsExtra = 0;
+    window_class.cbWndExtra = 0;
+    window_class.hInstance = GetModuleHandle(nullptr);
+    window_class.hIcon =
+        LoadIcon(window_class.hInstance, MAKEINTRESOURCE(IDI_APP_ICON));
+    window_class.hbrBackground = 0;
+    window_class.lpszMenuName = nullptr;
+    window_class.lpfnWndProc = Win32Window::WndProc;
+    RegisterClass(&window_class);
+    class_registered_ = true;
+  }
+  return kWindowClassName;
+}
+
+void WindowClassRegistrar::UnregisterWindowClass() {
+  UnregisterClass(kWindowClassName, nullptr);
+  class_registered_ = false;
+}
+
+Win32Window::Win32Window() {
+  ++g_active_window_count;
+}
+
+Win32Window::~Win32Window() {
+  --g_active_window_count;
+  Destroy();
+}
+
+bool Win32Window::CreateAndShow(const std::wstring& title,
+                                const Point& origin,
+                                const Size& size) {
+  Destroy();
+
+  const wchar_t* window_class =
+      WindowClassRegistrar::GetInstance()->GetWindowClass();
+
+  const POINT target_point = {static_cast<LONG>(origin.x),
+                              static_cast<LONG>(origin.y)};
+  HMONITOR monitor = MonitorFromPoint(target_point, MONITOR_DEFAULTTONEAREST);
+  UINT dpi = FlutterDesktopGetDpiForMonitor(monitor);
+  double scale_factor = dpi / 96.0;
+
+  HWND window = CreateWindow(
+      window_class, title.c_str(), WS_OVERLAPPEDWINDOW | WS_VISIBLE,
+      Scale(origin.x, scale_factor), Scale(origin.y, scale_factor),
+      Scale(size.width, scale_factor), Scale(size.height, scale_factor),
+      nullptr, nullptr, GetModuleHandle(nullptr), this);
+
+  if (!window) {
+    return false;
+  }
+
+  return OnCreate();
+}
+
+// static
+LRESULT CALLBACK Win32Window::WndProc(HWND const window,
+                                      UINT const message,
+                                      WPARAM const wparam,
+                                      LPARAM const lparam) noexcept {
+  if (message == WM_NCCREATE) {
+    auto window_struct = reinterpret_cast<CREATESTRUCT*>(lparam);
+    SetWindowLongPtr(window, GWLP_USERDATA,
+                     reinterpret_cast<LONG_PTR>(window_struct->lpCreateParams));
+
+    auto that = static_cast<Win32Window*>(window_struct->lpCreateParams);
+    EnableFullDpiSupportIfAvailable(window);
+    that->window_handle_ = window;
+  } else if (Win32Window* that = GetThisFromHandle(window)) {
+    return that->MessageHandler(window, message, wparam, lparam);
+  }
+
+  return DefWindowProc(window, message, wparam, lparam);
+}
+
+LRESULT
+Win32Window::MessageHandler(HWND hwnd,
+                            UINT const message,
+                            WPARAM const wparam,
+                            LPARAM const lparam) noexcept {
+  switch (message) {
+    case WM_DESTROY:
+      window_handle_ = nullptr;
+      Destroy();
+      if (quit_on_close_) {
+        PostQuitMessage(0);
+      }
+      return 0;
+
+    case WM_DPICHANGED: {
+      auto newRectSize = reinterpret_cast<RECT*>(lparam);
+      LONG newWidth = newRectSize->right - newRectSize->left;
+      LONG newHeight = newRectSize->bottom - newRectSize->top;
+
+      SetWindowPos(hwnd, nullptr, newRectSize->left, newRectSize->top, newWidth,
+                   newHeight, SWP_NOZORDER | SWP_NOACTIVATE);
+
+      return 0;
+    }
+    case WM_SIZE: {
+      RECT rect = GetClientArea();
+      if (child_content_ != nullptr) {
+        // Size and position the child window.
+        MoveWindow(child_content_, rect.left, rect.top, rect.right - rect.left,
+                   rect.bottom - rect.top, TRUE);
+      }
+      return 0;
+    }
+
+    case WM_ACTIVATE:
+      if (child_content_ != nullptr) {
+        SetFocus(child_content_);
+      }
+      return 0;
+  }
+
+  return DefWindowProc(window_handle_, message, wparam, lparam);
+}
+
+void Win32Window::Destroy() {
+  OnDestroy();
+
+  if (window_handle_) {
+    DestroyWindow(window_handle_);
+    window_handle_ = nullptr;
+  }
+  if (g_active_window_count == 0) {
+    WindowClassRegistrar::GetInstance()->UnregisterWindowClass();
+  }
+}
+
+Win32Window* Win32Window::GetThisFromHandle(HWND const window) noexcept {
+  return reinterpret_cast<Win32Window*>(
+      GetWindowLongPtr(window, GWLP_USERDATA));
+}
+
+void Win32Window::SetChildContent(HWND content) {
+  child_content_ = content;
+  SetParent(content, window_handle_);
+  RECT frame = GetClientArea();
+
+  MoveWindow(content, frame.left, frame.top, frame.right - frame.left,
+             frame.bottom - frame.top, true);
+
+  SetFocus(child_content_);
+}
+
+RECT Win32Window::GetClientArea() {
+  RECT frame;
+  GetClientRect(window_handle_, &frame);
+  return frame;
+}
+
+HWND Win32Window::GetHandle() {
+  return window_handle_;
+}
+
+void Win32Window::SetQuitOnClose(bool quit_on_close) {
+  quit_on_close_ = quit_on_close;
+}
+
+bool Win32Window::OnCreate() {
+  // No-op; provided for subclasses.
+  return true;
+}
+
+void Win32Window::OnDestroy() {
+  // No-op; provided for subclasses.
+}
diff --git a/example/windows/runner/win32_window.h b/example/windows/runner/win32_window.h
new file mode 100644
index 0000000..17ba431
--- /dev/null
+++ b/example/windows/runner/win32_window.h
@@ -0,0 +1,98 @@
+#ifndef RUNNER_WIN32_WINDOW_H_
+#define RUNNER_WIN32_WINDOW_H_
+
+#include <windows.h>
+
+#include <functional>
+#include <memory>
+#include <string>
+
+// A class abstraction for a high DPI-aware Win32 Window. Intended to be
+// inherited from by classes that wish to specialize with custom
+// rendering and input handling
+class Win32Window {
+ public:
+  struct Point {
+    unsigned int x;
+    unsigned int y;
+    Point(unsigned int x, unsigned int y) : x(x), y(y) {}
+  };
+
+  struct Size {
+    unsigned int width;
+    unsigned int height;
+    Size(unsigned int width, unsigned int height)
+        : width(width), height(height) {}
+  };
+
+  Win32Window();
+  virtual ~Win32Window();
+
+  // Creates and shows a win32 window with |title| and position and size using
+  // |origin| and |size|. New windows are created on the default monitor. Window
+  // sizes are specified to the OS in physical pixels, hence to ensure a
+  // consistent size to will treat the width height passed in to this function
+  // as logical pixels and scale to appropriate for the default monitor. Returns
+  // true if the window was created successfully.
+  bool CreateAndShow(const std::wstring& title,
+                     const Point& origin,
+                     const Size& size);
+
+  // Release OS resources associated with window.
+  void Destroy();
+
+  // Inserts |content| into the window tree.
+  void SetChildContent(HWND content);
+
+  // Returns the backing Window handle to enable clients to set icon and other
+  // window properties. Returns nullptr if the window has been destroyed.
+  HWND GetHandle();
+
+  // If true, closing this window will quit the application.
+  void SetQuitOnClose(bool quit_on_close);
+
+  // Return a RECT representing the bounds of the current client area.
+  RECT GetClientArea();
+
+ protected:
+  // Processes and route salient window messages for mouse handling,
+  // size change and DPI. Delegates handling of these to member overloads that
+  // inheriting classes can handle.
+  virtual LRESULT MessageHandler(HWND window,
+                                 UINT const message,
+                                 WPARAM const wparam,
+                                 LPARAM const lparam) noexcept;
+
+  // Called when CreateAndShow is called, allowing subclass window-related
+  // setup. Subclasses should return false if setup fails.
+  virtual bool OnCreate();
+
+  // Called when Destroy is called.
+  virtual void OnDestroy();
+
+ private:
+  friend class WindowClassRegistrar;
+
+  // OS callback called by message pump. Handles the WM_NCCREATE message which
+  // is passed when the non-client area is being created and enables automatic
+  // non-client DPI scaling so that the non-client area automatically
+  // responsponds to changes in DPI. All other messages are handled by
+  // MessageHandler.
+  static LRESULT CALLBACK WndProc(HWND const window,
+                                  UINT const message,
+                                  WPARAM const wparam,
+                                  LPARAM const lparam) noexcept;
+
+  // Retrieves a class instance pointer for |window|
+  static Win32Window* GetThisFromHandle(HWND const window) noexcept;
+
+  bool quit_on_close_ = false;
+
+  // window handle for top level window.
+  HWND window_handle_ = nullptr;
+
+  // window handle for hosted content.
+  HWND child_content_ = nullptr;
+};
+
+#endif  // RUNNER_WIN32_WINDOW_H_
diff --git a/lib/brasil_fields.dart b/lib/brasil_fields.dart
index fbd5c12..1abb3e6 100644
--- a/lib/brasil_fields.dart
+++ b/lib/brasil_fields.dart
@@ -2,26 +2,25 @@ library brasil_fields;
 
 export 'src/formatters/altura_input_formatter.dart';
 export 'src/formatters/cartao_bancario_input_formatter.dart';
+export 'src/formatters/centavos_input_formatter.dart';
 export 'src/formatters/cep_input_formatter.dart';
 export 'src/formatters/cnpj_input_formatter.dart';
+export 'src/formatters/compound_formatters/cpf_ou_cpnj_formatter.dart';
 export 'src/formatters/cpf_input_formatter.dart';
-export 'src/formatters/cartao_bancario_input_formatter.dart';
-export 'src/formatters/centavos_input_formatter.dart';
 export 'src/formatters/data_input_formatter.dart';
+export 'src/formatters/hora_input_formatter.dart';
+export 'src/formatters/km_input_formatter.dart';
 export 'src/formatters/peso_input_formatter.dart';
 export 'src/formatters/placa_veiculo_formatter.dart';
-export 'src/formatters/km_input_formatter.dart';
 export 'src/formatters/real_input_formatter.dart';
 export 'src/formatters/telefone_input_formatter.dart';
-export 'src/formatters/hora_input_formatter.dart';
-export 'src/formatters/validade_cartao_input_formatter.dart';
 export 'src/formatters/temperatura_input_formatter.dart';
-export 'src/formatters/compound_formatters/cpf_ou_cpnj_formatter.dart';
+export 'src/formatters/validade_cartao_input_formatter.dart';
 export 'src/modelos/estados.dart';
 export 'src/modelos/meses.dart';
 export 'src/modelos/regioes.dart';
 export 'src/modelos/semana.dart';
-export 'src/util/util_data.dart';
+export 'src/util/extensores.dart';
 export 'src/util/util_brasil_fields.dart';
+export 'src/util/util_data.dart';
 export 'src/validators/validators.dart';
-export 'src/util/extensores.dart';
diff --git a/lib/src/formatters/altura_input_formatter.dart b/lib/src/formatters/altura_input_formatter.dart
index 9e36199..682f69e 100644
--- a/lib/src/formatters/altura_input_formatter.dart
+++ b/lib/src/formatters/altura_input_formatter.dart
@@ -1,17 +1,14 @@
 import 'package:flutter/services.dart';
 
-/// Formata o valor do campo com a mascara m,cm. `1,82`
+/// Formata o valor do campo com a máscara m,cm. (`1,82`)
 class AlturaInputFormatter extends TextInputFormatter {
-  /// Define o tamanho máximo do campo.
-  final int maxLength = 3;
-
   @override
   TextEditingValue formatEditUpdate(
       TextEditingValue oldValue, TextEditingValue newValue) {
     final newValueLength = newValue.text.length;
-    var selectionIndex = newValue.selection.end;
 
-    if (newValueLength > maxLength) {
+    // Verifica o tamanho máximo do campo.
+    if (newValueLength > 3) {
       return oldValue;
     }
 
@@ -24,6 +21,7 @@ class AlturaInputFormatter extends TextInputFormatter {
       }
     }
 
+    var selectionIndex = newValue.selection.end;
     var substrIndex = 0;
     final newText = StringBuffer();
 
diff --git a/lib/src/formatters/cartao_bancario_input_formatter.dart b/lib/src/formatters/cartao_bancario_input_formatter.dart
index 222f87d..2f01727 100644
--- a/lib/src/formatters/cartao_bancario_input_formatter.dart
+++ b/lib/src/formatters/cartao_bancario_input_formatter.dart
@@ -1,20 +1,18 @@
 import 'package:flutter/services.dart';
 
-/// Formata o valor do campo com a mascara `0000 1111 2222 3333`
+/// Formata o valor do campo com a máscara `0000 1111 2222 3333`.
 class CartaoBancarioInputFormatter extends TextInputFormatter {
-  /// Define o tamanho máximo do campo.
-  final int maxLength = 16;
-
   @override
   TextEditingValue formatEditUpdate(
       TextEditingValue oldValue, TextEditingValue newValue) {
     final newValueLength = newValue.text.length;
-    var selectionIndex = newValue.selection.end;
 
-    if (newValueLength > maxLength) {
+    // Verifica o tamanho máximo do campo.
+    if (newValueLength > 16) {
       return oldValue;
     }
 
+    var selectionIndex = newValue.selection.end;
     var substrIndex = 0;
     final newText = StringBuffer();
 
diff --git a/lib/src/formatters/centavos_input_formatter.dart b/lib/src/formatters/centavos_input_formatter.dart
index 8a7f6e5..8fa80cc 100644
--- a/lib/src/formatters/centavos_input_formatter.dart
+++ b/lib/src/formatters/centavos_input_formatter.dart
@@ -2,17 +2,14 @@ import 'package:flutter/services.dart';
 
 import 'adiciona_separador.dart';
 
-/// Formata o valor do campo com a mascara ( 9.999.999.999,00 ).
+/// Formata o valor do campo com a máscara `9.999.999.999,00`.
 ///
-/// `[casasDecimais]` indica a quantidade de casas usadas.
+/// `casasDecimais` indica a quantidade de casas usadas.
 class CentavosInputFormatter extends TextInputFormatter {
   CentavosInputFormatter({this.moeda = false, this.casasDecimais = 2})
       : assert(casasDecimais == 2 || casasDecimais == 3,
             'Quantidade de casas decimais deve ser 2 ou 3. Informado: $casasDecimais');
 
-  /// Define o tamanho máximo do campo.
-  int maxLength = 12;
-
   final bool moeda;
   final int casasDecimais;
 
@@ -21,12 +18,14 @@ class CentavosInputFormatter extends TextInputFormatter {
       TextEditingValue oldValue, TextEditingValue newValue) {
     final newValueLength = newValue.text.length;
 
+    // Verifica o tamanho máximo do campo.
+    if (newValueLength > 12) {
+      return oldValue;
+    }
+
     if (newValueLength == 0) {
       return newValue;
     }
-    if (newValueLength > maxLength) {
-      return oldValue;
-    }
 
     const simbolo = 'R\$ ';
     final newText = StringBuffer();
diff --git a/lib/src/formatters/cep_input_formatter.dart b/lib/src/formatters/cep_input_formatter.dart
index 2773802..822440b 100644
--- a/lib/src/formatters/cep_input_formatter.dart
+++ b/lib/src/formatters/cep_input_formatter.dart
@@ -1,11 +1,9 @@
 import 'package:flutter/services.dart';
 
 /// Formata o valor do campo com a mascara de CEP `XX.XXX-XXX`
+///
+/// `ponto` indica se o formato do CEP deve utilizar `.` ou não.
 class CepInputFormatter extends TextInputFormatter {
-  /// Define o tamanho máximo do campo.
-  final maxLength = 8;
-
-  /// [ponto] indica se o formato do CEP deve utilizar `.` ou não.
   final bool ponto;
 
   CepInputFormatter({this.ponto = true});
@@ -14,9 +12,9 @@ class CepInputFormatter extends TextInputFormatter {
   TextEditingValue formatEditUpdate(
       TextEditingValue oldValue, TextEditingValue newValue) {
     final newValueLength = newValue.text.length;
-    var selectionIndex = newValue.selection.end;
 
-    if (newValueLength > maxLength) {
+    // Define o tamanho máximo do campo.
+    if (newValueLength > 8) {
       return oldValue;
     }
     var substrInicio = 2;
@@ -24,6 +22,7 @@ class CepInputFormatter extends TextInputFormatter {
       substrInicio = 0;
     }
 
+    var selectionIndex = newValue.selection.end;
     var substrIndex = 0;
     final newText = StringBuffer();
 
diff --git a/lib/src/formatters/cnpj_input_formatter.dart b/lib/src/formatters/cnpj_input_formatter.dart
index 95e864c..094d1aa 100644
--- a/lib/src/formatters/cnpj_input_formatter.dart
+++ b/lib/src/formatters/cnpj_input_formatter.dart
@@ -4,7 +4,7 @@ import 'package:flutter/services.dart';
 /// Formata o valor do campo com a mascara de CNPJ `99.999.999/9999-99`
 class CnpjInputFormatter extends TextInputFormatter
     implements CompoundableFormatter {
-  /// Define o tamanho máximo do campo.
+  // Define o tamanho máximo do campo.
   @override
   int get maxLength => 14;
 
@@ -12,12 +12,12 @@ class CnpjInputFormatter extends TextInputFormatter
   TextEditingValue formatEditUpdate(
       TextEditingValue oldValue, TextEditingValue newValue) {
     final newValueLength = newValue.text.length;
-    var selectionIndex = newValue.selection.end;
 
     if (newValueLength > maxLength) {
       return oldValue;
     }
 
+    var selectionIndex = newValue.selection.end;
     var substrIndex = 0;
     final newText = StringBuffer();
 
diff --git a/lib/src/formatters/cpf_input_formatter.dart b/lib/src/formatters/cpf_input_formatter.dart
index f957e22..6503db2 100644
--- a/lib/src/formatters/cpf_input_formatter.dart
+++ b/lib/src/formatters/cpf_input_formatter.dart
@@ -1,10 +1,10 @@
 import 'package:brasil_fields/src/interfaces/compoundable_formatter.dart';
 import 'package:flutter/services.dart';
 
-/// Formata o valor do campo com a mascara de CPF `XXX.XXX.XXX-XX`
+/// Formata o valor do campo com a mascara de CPF: `XXX.XXX.XXX-XX`
 class CpfInputFormatter extends TextInputFormatter
     implements CompoundableFormatter {
-  /// Define o tamanho máximo do campo.
+  // Define o tamanho máximo do campo.
   @override
   int get maxLength => 11;
 
@@ -12,12 +12,12 @@ class CpfInputFormatter extends TextInputFormatter
   TextEditingValue formatEditUpdate(
       TextEditingValue oldValue, TextEditingValue newValue) {
     final newValueLength = newValue.text.length;
-    var selectionIndex = newValue.selection.end;
 
     if (newValueLength > maxLength) {
       return oldValue;
     }
 
+    var selectionIndex = newValue.selection.end;
     var substrIndex = 0;
     final newText = StringBuffer();
 
diff --git a/lib/src/formatters/data_input_formatter.dart b/lib/src/formatters/data_input_formatter.dart
index 12fdaca..ddfb1ff 100644
--- a/lib/src/formatters/data_input_formatter.dart
+++ b/lib/src/formatters/data_input_formatter.dart
@@ -2,19 +2,17 @@ import 'package:flutter/services.dart';
 
 /// Formata o valor do campo com a mascara de data `01/01/1900`.
 class DataInputFormatter extends TextInputFormatter {
-  /// Define o tamanho máximo do campo.
-  final int maxLength = 8;
-
   @override
   TextEditingValue formatEditUpdate(
       TextEditingValue oldValue, TextEditingValue newValue) {
     final newValueLength = newValue.text.length;
-    var selectionIndex = newValue.selection.end;
 
-    if (newValueLength > maxLength) {
+    // Verifica o tamanho máximo do campo.
+    if (newValueLength > 8) {
       return oldValue;
     }
 
+    var selectionIndex = newValue.selection.end;
     var substrIndex = 0;
     final newText = StringBuffer();
 
diff --git a/lib/src/formatters/hora_input_formatter.dart b/lib/src/formatters/hora_input_formatter.dart
index 33e3f79..9bcd8ba 100644
--- a/lib/src/formatters/hora_input_formatter.dart
+++ b/lib/src/formatters/hora_input_formatter.dart
@@ -2,22 +2,20 @@ import 'package:flutter/services.dart';
 
 /// Formata o valor do campo com a máscara de hora `HH:mm`
 class HoraInputFormatter extends TextInputFormatter {
-  /// Define o tamanho máximo do campo.
-  final int maxLength = 4;
-
   @override
   TextEditingValue formatEditUpdate(
       TextEditingValue oldValue, TextEditingValue newValue) {
     final newValueLength = newValue.text.length;
-    var selectionIndex = newValue.selection.end;
-
-    var substrIndex = 0;
-    final newText = StringBuffer();
 
-    if (newValueLength > maxLength) {
+    // Verifica o tamanho máximo do campo.
+    if (newValueLength > 4) {
       return oldValue;
     }
 
+    var selectionIndex = newValue.selection.end;
+    var substrIndex = 0;
+    final newText = StringBuffer();
+
     switch (newValueLength) {
       case 1:
         final hora = int.parse(newValue.text.substring(0, 1));
diff --git a/lib/src/formatters/km_input_formatter.dart b/lib/src/formatters/km_input_formatter.dart
index 62567e8..2614afc 100644
--- a/lib/src/formatters/km_input_formatter.dart
+++ b/lib/src/formatters/km_input_formatter.dart
@@ -1,22 +1,20 @@
 import 'package:flutter/services.dart';
 
-/// Formata o valor do campo com a mascara de hora ( 000.000 ).
+/// Formata o valor do campo com a máscara de `000.000`.
 class KmInputFormatter extends TextInputFormatter {
-  /// Define o tamanho máximo do campo.
-  final int maxLength = 6;
-
   @override
   TextEditingValue formatEditUpdate(
       TextEditingValue oldValue, TextEditingValue newValue) {
     final newValueLength = newValue.text.length;
-    var selectionIndex = newValue.selection.end;
 
-    if (newValueLength > maxLength) {
+    // Verifica o tamanho máximo do campo.
+    if (newValueLength > 6) {
       return oldValue;
     }
-
+    var selectionIndex = newValue.selection.end;
     var substrIndex = 0;
     final newText = StringBuffer();
+
     switch (newValueLength) {
       case 4:
         newText.write(newValue.text.substring(0, substrIndex = 1) +
diff --git a/lib/src/formatters/peso_input_formatter.dart b/lib/src/formatters/peso_input_formatter.dart
index 28c90dd..67c595d 100644
--- a/lib/src/formatters/peso_input_formatter.dart
+++ b/lib/src/formatters/peso_input_formatter.dart
@@ -1,22 +1,21 @@
 import 'package:flutter/services.dart';
 
-/// Formata o valor do campo com a mascara kg,g (ex: 103,8)
+/// Formata o valor do campo com a mascara kg,g (ex: `103,8`)
 class PesoInputFormatter extends TextInputFormatter {
-  /// Define o tamanho máximo do campo.
-  final int maxLength = 4;
-
   @override
   TextEditingValue formatEditUpdate(
       TextEditingValue oldValue, TextEditingValue newValue) {
     final newTextLength = newValue.text.length;
-    var selectionIndex = newValue.selection.end;
-    var substrIndex = 0;
-    final newText = StringBuffer();
 
-    if (newTextLength > maxLength) {
+    // Verifica o tamanho máximo do campo.
+    if (newTextLength > 4) {
       return oldValue;
     }
 
+    var selectionIndex = newValue.selection.end;
+    var substrIndex = 0;
+    final newText = StringBuffer();
+
     switch (newTextLength) {
       case 3:
         newText.write(newValue.text.substring(0, substrIndex = 2) + ',');
diff --git a/lib/src/formatters/placa_veiculo_formatter.dart b/lib/src/formatters/placa_veiculo_formatter.dart
index ecba296..54c4e89 100644
--- a/lib/src/formatters/placa_veiculo_formatter.dart
+++ b/lib/src/formatters/placa_veiculo_formatter.dart
@@ -1,25 +1,23 @@
 import 'package:flutter/services.dart';
 
-/// Formata o valor do campo com a mascara de veículos ( XXX-XXXX ).
+/// Formata o valor do campo com a máscara de veículos `XXX-XXXX`.
 ///
 ///Não se deve utilizar o `FilteringTextInputFormatter.digitsOnly` com
 ///este formatter.
 class PlacaVeiculoInputFormatter extends TextInputFormatter {
-  /// Define o tamanho máximo do campo.
-  final int maxLength = 8;
-
   @override
   TextEditingValue formatEditUpdate(
       TextEditingValue oldValue, TextEditingValue newValue) {
     final newValueLength = newValue.text.length;
+    // Verifica o tamanho máximo do campo.
+    if (newValueLength > 8) {
+      return oldValue;
+    }
+
     var selectionIndex = newValue.selection.end;
     var substrIndex = 0;
     final newText = StringBuffer();
 
-    if (newValueLength > maxLength) {
-      return oldValue;
-    }
-
     if (newValueLength == 4) {
       if (newValue.text.contains("-")) {
         newText.write(newValue.text.substring(0, substrIndex = 3));
diff --git a/lib/src/formatters/real_input_formatter.dart b/lib/src/formatters/real_input_formatter.dart
index 6e786db..145f15d 100644
--- a/lib/src/formatters/real_input_formatter.dart
+++ b/lib/src/formatters/real_input_formatter.dart
@@ -2,13 +2,11 @@ import 'package:flutter/services.dart';
 
 import 'adiciona_separador.dart';
 
-/// Formata o valor do campo com a mascara ( 9.999.999.999 ).
+/// Formata o valor do campo com a máscara `999.999.999.999`.
+
 class RealInputFormatter extends TextInputFormatter {
   RealInputFormatter({this.moeda = false});
 
-  /// Define o tamanho máximo do campo.
-  int maxLength = 12;
-
   final bool moeda;
 
   @override
@@ -16,12 +14,14 @@ class RealInputFormatter extends TextInputFormatter {
       TextEditingValue oldValue, TextEditingValue newValue) {
     final newValueLength = newValue.text.length;
 
+    // Verifica o tamanho máximo do campo.
+    if (newValueLength > 12) {
+      return oldValue;
+    }
+
     if (newValueLength == 0) {
       return newValue;
     }
-    if (newValueLength > maxLength) {
-      return oldValue;
-    }
 
     final newText = StringBuffer();
     var valorFinal = newValue.text;
diff --git a/lib/src/formatters/telefone_input_formatter.dart b/lib/src/formatters/telefone_input_formatter.dart
index f292ffe..cdfd946 100644
--- a/lib/src/formatters/telefone_input_formatter.dart
+++ b/lib/src/formatters/telefone_input_formatter.dart
@@ -1,27 +1,28 @@
 import 'package:flutter/services.dart';
 
-/// Formata o valor do campo com a máscara ( (99) 99999-9999 ).
+/// Formata o valor do campo com a máscara `(99) 99999-9999`.
 ///
-/// Nono dígito automático.
+/// _Nono dígito automático_.
 class TelefoneInputFormatter extends TextInputFormatter {
   @override
   TextEditingValue formatEditUpdate(
       TextEditingValue oldValue, TextEditingValue newValue) {
     final newValueLength = newValue.text.length;
-    var selectionIndex = newValue.selection.end;
-    var substrIndex = 0;
-    final newText = StringBuffer();
 
+    // Verifica o tamanho máximo do campo.
+    if (newValueLength > 11) {
+      return oldValue;
+    }
     if (newValueLength == 11) {
       if (newValue.text.toString()[2] != '9') {
         return oldValue;
       }
     }
 
-    /// Verifica o tamanho máximo do campo.
-    if (newValueLength > 11) {
-      return oldValue;
-    }
+    var selectionIndex = newValue.selection.end;
+    var substrIndex = 0;
+    final newText = StringBuffer();
+
     if (newValueLength >= 1) {
       newText.write('(');
       if (newValue.selection.end >= 1) selectionIndex++;
diff --git a/lib/src/formatters/temperatura_input_formatter.dart b/lib/src/formatters/temperatura_input_formatter.dart
index 2d09d98..d44a959 100644
--- a/lib/src/formatters/temperatura_input_formatter.dart
+++ b/lib/src/formatters/temperatura_input_formatter.dart
@@ -1,24 +1,21 @@
 import 'package:flutter/services.dart';
 
-/// Formata o valor do campo com a mascara °C (ex: 10,8)
+/// Formata o valor do campo com a mascara °C (ex: `10,8`).
 class TemperaturaInputFormatter extends TextInputFormatter {
-  /// Define o tamanho máximo do campo.
-  final int maxLength = 3;
-
   @override
   TextEditingValue formatEditUpdate(
     TextEditingValue oldValue,
     TextEditingValue newValue,
   ) {
     final newTextLength = newValue.text.length;
-    var selectionIndex = newValue.selection.end;
-
-    if (newTextLength > maxLength) {
+    // Verifica o tamanho máximo do campo.
+    if (newTextLength > 3) {
       return oldValue;
     }
-
+    var selectionIndex = newValue.selection.end;
     var usedSubstringIndex = 0;
     final newText = StringBuffer();
+
     switch (newTextLength) {
       case 2:
         newText.write(newValue.text.substring(0, usedSubstringIndex = 1) + ',');
diff --git a/lib/src/formatters/validade_cartao_input_formatter.dart b/lib/src/formatters/validade_cartao_input_formatter.dart
index 93542a0..75faa07 100644
--- a/lib/src/formatters/validade_cartao_input_formatter.dart
+++ b/lib/src/formatters/validade_cartao_input_formatter.dart
@@ -1,8 +1,11 @@
 import 'package:flutter/services.dart';
 
-/// Formata o valor do campo com a máscara MM/AA
+/// Formata o valor do campo com a máscara `MM/AA` ou `MM/AAAA`.
+///
+///  `maxLength = 4` MM/AA (default)
+///
+/// `maxLength = 6` MM/AAAAA.
 class ValidadeCartaoInputFormatter extends TextInputFormatter {
-  /// [maxLength] Define o tamanho máximo do campo e indica se o formato da máscara deve utilizar o ano com 2 ou 4 dígitos.
   final int maxLength;
 
   ValidadeCartaoInputFormatter({this.maxLength = 4})
@@ -13,12 +16,12 @@ class ValidadeCartaoInputFormatter extends TextInputFormatter {
   TextEditingValue formatEditUpdate(
       TextEditingValue oldValue, TextEditingValue newValue) {
     final newValueLength = newValue.text.length;
-    var selectionIndex = newValue.selection.end;
 
     if (newValueLength > maxLength) {
       return oldValue;
     }
 
+    var selectionIndex = newValue.selection.end;
     var substrIndex = 0;
     final newText = StringBuffer();
 
diff --git a/lib/src/util/extensores.dart b/lib/src/util/extensores.dart
index 21edb20..44fcfac 100644
--- a/lib/src/util/extensores.dart
+++ b/lib/src/util/extensores.dart
@@ -1,6 +1,6 @@
 import 'package:intl/intl.dart';
 
-extension BrasiLFields on double {
+extension BrasilFieldsDouble on double {
   /// Converte um valor double para centavos com o símbolo de real brasileiro
   String get obterCentavos =>
       '${this < 0 ? '-' : ''}R\$ ${(abs() * 100).toInt().toString()}';
@@ -23,7 +23,7 @@ extension BrasiLFields on double {
       obterReal(fracaoDigitos).replaceAll('R\$ ', '');
 }
 
-extension BrasilFields on int {
+extension BrasilFieldsInt on int {
   /// Converte um valor inteiro para centavos com o símbolo de real brasileiro
   String get obterCentavos =>
       '${this < 0 ? '-' : ''}R\$ ${(abs() * 100).toInt().toString()}';
diff --git a/pubspec.yaml b/pubspec.yaml
index a92a7ae..7221835 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: brasil_fields
 description: O jeito mais fácil de utilizar padrões e formatos brasileiros em seu projeto Dart.
-version: 1.9.0
+version: 1.9.1
 homepage: https://github.com/flutterbootcamp/brasil_fields
 repository: https://github.com/flutterbootcamp/brasil_fields
 issue_tracker: https://github.com/flutterbootcamp/brasil_fields/issues