diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml
new file mode 100644
index 0000000..a5b10e1
--- /dev/null
+++ b/.github/FUNDING.yml
@@ -0,0 +1,3 @@
+# These are supported funding model platforms
+
+github: stancl
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..b8c2e07
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,37 @@
+name: CI
+
+on:
+  push:
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  phpunit:
+    name: Tests (Pest) L${{ matrix.laravel }}
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        laravel: [8, 9]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install composer dependencies
+      run: composer require "laravel/framework:^${{matrix.laravel}}.0"
+    - name: Run tests
+      run: vendor/bin/pest
+
+  php-cs-fixer:
+    name: Code style (php-cs-fixer)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install php-cs-fixer
+        run: composer global require friendsofphp/php-cs-fixer
+      - name: Run php-cs-fixer
+        run: $HOME/.composer/vendor/bin/php-cs-fixer fix --config=.php-cs-fixer.php
+      - name: Commit changes from php-cs-fixer
+        uses: EndBug/add-and-commit@v5
+        with:
+          author_name: Samuel Štancl
+          author_email: samuel.stancl@gmail.com
+          message: Fix code style (php-cs-fixer)
diff --git a/.gitignore b/.gitignore
index 7137bf2..20734e1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@ composer.lock
 node_modules
 package-lock.json
 .phpunit.result.cache
+.php-cs-fixer.cache
diff --git a/.php-cs-fixer.php b/.php-cs-fixer.php
new file mode 100644
index 0000000..a96d781
--- /dev/null
+++ b/.php-cs-fixer.php
@@ -0,0 +1,141 @@
+<?php
+
+use PhpCsFixer\Config;
+use PhpCsFixer\Finder;
+
+$rules = [
+    'array_syntax' => ['syntax' => 'short'],
+    'binary_operator_spaces' => [
+        'default' => 'single_space',
+        'operators' => [
+            '=>' => null,
+            '|' => 'no_space',
+        ],
+    ],
+    'blank_line_after_namespace' => true,
+    'blank_line_after_opening_tag' => true,
+    'no_superfluous_phpdoc_tags' => true,
+    'blank_line_before_statement' => [
+        'statements' => ['return'],
+    ],
+    'braces' => true,
+    'cast_spaces' => true,
+    'class_definition' => true,
+    'concat_space' => [
+        'spacing' => 'one',
+    ],
+    'declare_equal_normalize' => true,
+    'elseif' => true,
+    'encoding' => true,
+    'full_opening_tag' => true,
+    'declare_strict_types' => true,
+    'fully_qualified_strict_types' => true, // added by Shift
+    'function_declaration' => true,
+    'function_typehint_space' => true,
+    'heredoc_to_nowdoc' => true,
+    'include' => true,
+    'increment_style' => ['style' => 'post'],
+    'indentation_type' => true,
+    'linebreak_after_opening_tag' => true,
+    'line_ending' => true,
+    'lowercase_cast' => true,
+    'constant_case' => true,
+    'lowercase_keywords' => true,
+    'lowercase_static_reference' => true, // added from Symfony
+    'magic_method_casing' => true, // added from Symfony
+    'magic_constant_casing' => true,
+    'method_argument_space' => true,
+    'native_function_casing' => true,
+    'no_alias_functions' => true,
+    'no_extra_blank_lines' => [
+        'tokens' => [
+            'extra',
+            'throw',
+            'use',
+            'use_trait',
+        ],
+    ],
+    'no_blank_lines_after_class_opening' => true,
+    'no_blank_lines_after_phpdoc' => true,
+    'no_closing_tag' => true,
+    'no_empty_phpdoc' => true,
+    'no_empty_statement' => true,
+    'no_leading_import_slash' => true,
+    'no_leading_namespace_whitespace' => true,
+    'no_mixed_echo_print' => [
+        'use' => 'echo',
+    ],
+    'no_multiline_whitespace_around_double_arrow' => true,
+    'multiline_whitespace_before_semicolons' => [
+        'strategy' => 'no_multi_line',
+    ],
+    'no_short_bool_cast' => true,
+    'no_singleline_whitespace_before_semicolons' => true,
+    'no_spaces_after_function_name' => true,
+    'no_spaces_around_offset' => true,
+    'no_spaces_inside_parenthesis' => true,
+    'no_trailing_comma_in_list_call' => true,
+    'no_trailing_comma_in_singleline_array' => true,
+    'no_trailing_whitespace' => true,
+    'no_trailing_whitespace_in_comment' => true,
+    'no_unneeded_control_parentheses' => true,
+    'no_unreachable_default_argument_value' => true,
+    'no_useless_return' => true,
+    'no_whitespace_before_comma_in_array' => true,
+    'no_whitespace_in_blank_line' => true,
+    'normalize_index_brace' => true,
+    'not_operator_with_successor_space' => true,
+    'object_operator_without_whitespace' => true,
+    'ordered_imports' => ['sort_algorithm' => 'alpha'],
+    'phpdoc_indent' => true,
+    'general_phpdoc_tag_rename' => true,
+    'phpdoc_no_access' => true,
+    'phpdoc_no_package' => true,
+    'phpdoc_no_useless_inheritdoc' => true,
+    'phpdoc_scalar' => true,
+    'phpdoc_single_line_var_spacing' => true,
+    'phpdoc_summary' => true,
+    'phpdoc_to_comment' => false,
+    'phpdoc_trim' => true,
+    'phpdoc_types' => true,
+    'phpdoc_var_without_name' => true,
+    'psr_autoloading' => true,
+    'self_accessor' => true,
+    'short_scalar_cast' => true,
+    'simplified_null_return' => false, // disabled by Shift
+    'single_blank_line_at_eof' => true,
+    'single_blank_line_before_namespace' => true,
+    'single_class_element_per_statement' => true,
+    'single_import_per_statement' => false,
+    'single_line_after_imports' => true,
+    'no_unused_imports' => true,
+    'single_line_comment_style' => [
+        'comment_types' => ['hash'],
+    ],
+    'single_quote' => true,
+    'space_after_semicolon' => true,
+    'standardize_not_equals' => true,
+    'switch_case_semicolon_to_colon' => true,
+    'switch_case_space' => true,
+    'ternary_operator_spaces' => true,
+    'trailing_comma_in_multiline' => true,
+    'trim_array_spaces' => true,
+    'unary_operator_spaces' => true,
+    'whitespace_after_comma_in_array' => true,
+];
+
+$project_path = getcwd();
+$finder = Finder::create()
+    ->in([
+        $project_path . '/src',
+    ])
+    ->name('*.php')
+    ->notName('*.blade.php')
+    ->ignoreDotFiles(true)
+    ->ignoreVCS(true);
+
+return (new Config())
+    ->setFinder($finder)
+    ->setRules($rules)
+    ->setRiskyAllowed(true)
+    ->setUsingCache(true);
diff --git a/check b/check
new file mode 100755
index 0000000..4eb5950
--- /dev/null
+++ b/check
@@ -0,0 +1,47 @@
+#!/bin/bash
+set -e
+
+offer_run() {
+    read -p "For more output, run $1. Run it now (Y/n)? " run
+
+    case ${run:0:1} in
+        n|N )
+            exit 1
+        ;;
+        * )
+            $1
+        ;;
+    esac
+
+    exit 1
+}
+
+if (php-cs-fixer fix --dry-run --config=.php-cs-fixer.php > /dev/null 2>/dev/null); then
+    echo '✅ php-cs-fixer OK'
+else
+    read -p "⚠️ php-cs-fixer found issues. Fix (Y/n)? " fix
+    case ${fix:0:1} in
+        n|N )
+            echo '❌ php-cs-fixer FAIL'
+            offer_run 'php-cs-fixer fix --config=.php-cs-fixer.php'
+        ;;
+        * )
+            if (php-cs-fixer fix --config=.php-cs-fixer.php > /dev/null 2>/dev/null); then
+                echo '✅ php-cs-fixer OK'
+            else
+                echo '❌ php-cs-fixer FAIL'
+                offer_run 'php-cs-fixer fix --config=.php-cs-fixer.php'
+            fi
+        ;;
+    esac
+fi
+
+if (./vendor/bin/pest > /dev/null 2>/dev/null); then
+    echo '✅ Pest OK'
+else
+    echo '❌ Pest FAIL'
+    offer_run './vendor/bin/pest'
+fi
+
+echo '=================='
+echo '✅ Everything OK'
diff --git a/composer.json b/composer.json
index c7267e7..a73ef7c 100644
--- a/composer.json
+++ b/composer.json
@@ -21,13 +21,13 @@
     },
     "require-dev": {
         "pestphp/pest": "^1.2",
-        "illuminate/testing": "^8.42",
-        "orchestra/testbench": "^6.17",
+        "illuminate/testing": "^8.42|^9.0",
+        "orchestra/testbench": "^6.17|^7.0",
         "pestphp/pest-plugin-laravel": "^1.0.0"
     },
     "require": {
-        "illuminate/support": "^8.42",
-        "illuminate/console": "^8.42"
+        "illuminate/support": "^8.42|^9.0",
+        "illuminate/console": "^8.42|^9.0"
     },
     "extra": {
         "laravel": {
@@ -35,5 +35,7 @@
                 "Airwire\\AirwireServiceProvider"
             ]
         }
-    }
+    },
+    "minimum-stability": "dev",
+    "prefer-stable": true
 }
diff --git a/src/Airwire.php b/src/Airwire.php
index f89a0bb..419a04c 100644
--- a/src/Airwire.php
+++ b/src/Airwire.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Airwire;
 
 use Airwire\Attributes\Encode;
@@ -177,7 +179,7 @@ class Airwire
     {
         if (isset(static::$components[$component])) {
             return new RequestBuilder($component);
-        } else if (in_array($component, static::$components)) {
+        } elseif (in_array($component, static::$components)) {
             return new RequestBuilder(array_search($component, static::$components));
         }
 
diff --git a/src/AirwireServiceProvider.php b/src/AirwireServiceProvider.php
index 6465441..04b6ec5 100644
--- a/src/AirwireServiceProvider.php
+++ b/src/AirwireServiceProvider.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Airwire;
 
 use Airwire\Commands\ComponentCommand;
diff --git a/src/Attributes/Encode.php b/src/Attributes/Encode.php
index 45e1dff..9ed6893 100644
--- a/src/Attributes/Encode.php
+++ b/src/Attributes/Encode.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Airwire\Attributes;
 
 use Attribute;
@@ -11,7 +13,8 @@ class Encode
         public string|null $property = null,
         public string|null $method = null,
         public string|null $function = null,
-     ) {}
+    ) {
+    }
 
     public function encode(mixed $value): mixed
     {
diff --git a/src/Attributes/Wired.php b/src/Attributes/Wired.php
index aca5eca..8ac10dc 100644
--- a/src/Attributes/Wired.php
+++ b/src/Attributes/Wired.php
@@ -1,15 +1,18 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Airwire\Attributes;
 
 use Attribute;
 
-#[Attribute(Attribute::TARGET_PROPERTY | Attribute::TARGET_METHOD)]
+#[Attribute(Attribute::TARGET_PROPERTY|Attribute::TARGET_METHOD)]
 class Wired
 {
     public function __construct(
         public mixed $default = null,
         public bool $readonly = false,
         public string|null $type = null,
-    ) {}
+    ) {
+    }
 }
diff --git a/src/Commands/ComponentCommand.php b/src/Commands/ComponentCommand.php
index 7f8306d..fef2bba 100644
--- a/src/Commands/ComponentCommand.php
+++ b/src/Commands/ComponentCommand.php
@@ -1,10 +1,12 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Airwire\Commands;
 
 use Exception;
-use Illuminate\Support\Str;
 use Illuminate\Console\Command;
+use Illuminate\Support\Str;
 
 class ComponentCommand extends Command
 {
diff --git a/src/Commands/GenerateDefinitions.php b/src/Commands/GenerateDefinitions.php
index 453937c..e0a5d23 100644
--- a/src/Commands/GenerateDefinitions.php
+++ b/src/Commands/GenerateDefinitions.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Airwire\Commands;
 
 use Airwire\Airwire;
@@ -36,7 +38,7 @@ class GenerateDefinitions extends Command
             $namedTypes .= "type {$alias} = {$type};\n\n";
         }
 
-        $typemap .= "}";
+        $typemap .= '}';
 
         $defaults = json_encode($defaults);
 
diff --git a/src/Component.php b/src/Component.php
index 22dd0b9..964fb18 100644
--- a/src/Component.php
+++ b/src/Component.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Airwire;
 
 use Airwire\Testing\RequestBuilder;
diff --git a/src/Concerns/ManagesActions.php b/src/Concerns/ManagesActions.php
index 61cf798..9a6cada 100644
--- a/src/Concerns/ManagesActions.php
+++ b/src/Concerns/ManagesActions.php
@@ -1,12 +1,14 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Airwire\Concerns;
 
 use Airwire\Airwire;
-use ReflectionMethod;
-use ReflectionObject;
 use Illuminate\Foundation\Exceptions\Handler;
 use Illuminate\Validation\ValidationException;
+use ReflectionMethod;
+use ReflectionObject;
 use Throwable;
 
 trait ManagesActions
@@ -28,7 +30,8 @@ trait ManagesActions
         if ($changes) {
             try {
                 $this->changed($changes);
-            } catch (ValidationException) {}
+            } catch (ValidationException) {
+            }
         }
     }
 
@@ -77,7 +80,8 @@ trait ManagesActions
                             $result = array_merge($readonly, $result);
 
                             $this->readonly = array_unique(array_merge(
-                                $this->readonly, array_keys($readonly)
+                                $this->readonly,
+                                array_keys($readonly)
                             ));
                         }
                     }
diff --git a/src/Concerns/ManagesLifecycle.php b/src/Concerns/ManagesLifecycle.php
index 776eb11..76cdb9c 100644
--- a/src/Concerns/ManagesLifecycle.php
+++ b/src/Concerns/ManagesLifecycle.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Airwire\Concerns;
 
 use Illuminate\Validation\ValidationException;
@@ -31,7 +33,8 @@ trait ManagesLifecycle
             if (method_exists($this, 'dehydrate')) {
                 app()->call([$this, 'dehydrate'], $this->requestState);
             }
-        } catch (ValidationException) {}
+        } catch (ValidationException) {
+        }
 
         if (isset($this->errors) && ! $this->hasBeenReset) {
             $this->metadata['errors'] = $this->errors->toArray();
diff --git a/src/Concerns/ManagesState.php b/src/Concerns/ManagesState.php
index 479f756..2af545d 100644
--- a/src/Concerns/ManagesState.php
+++ b/src/Concerns/ManagesState.php
@@ -1,12 +1,14 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Airwire\Concerns;
 
 use Airwire\Airwire;
+use Airwire\Attributes\Wired;
 use ReflectionMethod;
 use ReflectionObject;
 use ReflectionProperty;
-use Airwire\Attributes\Wired;
 
 trait ManagesState
 {
diff --git a/src/Concerns/ManagesValidation.php b/src/Concerns/ManagesValidation.php
index d6d3503..0ea7fe3 100644
--- a/src/Concerns/ManagesValidation.php
+++ b/src/Concerns/ManagesValidation.php
@@ -1,11 +1,13 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Airwire\Concerns;
 
 use Illuminate\Contracts\Validation\Validator as AbstractValidator;
 use Illuminate\Support\Arr;
-use Illuminate\Support\MessageBag;
 use Illuminate\Support\Facades\Validator;
+use Illuminate\Support\MessageBag;
 use Illuminate\Validation\ValidationException;
 
 trait ManagesValidation
diff --git a/src/Http/AirwireController.php b/src/Http/AirwireController.php
index dfd1014..365b406 100644
--- a/src/Http/AirwireController.php
+++ b/src/Http/AirwireController.php
@@ -1,11 +1,12 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Airwire\Http;
 
 use Airwire\Airwire;
 use Airwire\Component;
 use Illuminate\Http\Request;
-use Illuminate\Http\Resources\Json\JsonResource;
 use Illuminate\Support\Facades\Validator;
 
 class AirwireController
@@ -47,23 +48,35 @@ class AirwireController
                 }
             }],
             'state' => ['nullable', function ($attribute, $value, $fail) {
-                if (! is_array($value)) $fail('State must be an array.');
+                if (! is_array($value)) {
+                    $fail('State must be an array.');
+                }
                 foreach ($value as $k => $v) {
-                    if (! is_string($k)) $fail("[State] Property name must be a string, {$k} given.");
+                    if (! is_string($k)) {
+                        $fail("[State] Property name must be a string, {$k} given.");
+                    }
                 }
             }],
             'changes' => ['nullable', function ($attribute, $value, $fail) {
-                if (! is_array($value)) $fail('Changes must be an array.');
+                if (! is_array($value)) {
+                    $fail('Changes must be an array.');
+                }
 
                 foreach ($value as $k => $v) {
-                    if (! is_string($k)) $fail("[Changes] Property name must be a string, {$k} given.");
+                    if (! is_string($k)) {
+                        $fail("[Changes] Property name must be a string, {$k} given.");
+                    }
                 }
             }],
             'calls' => ['nullable', function ($attribute, $value, $fail) {
-                if (! is_array($value)) $fail('Calls must be an array.');
+                if (! is_array($value)) {
+                    $fail('Calls must be an array.');
+                }
 
                 foreach ($value as $k => $v) {
-                    if (! is_string($k)) $fail("[Calls] Method name must be a string, {$k} given.");
+                    if (! is_string($k)) {
+                        $fail("[Calls] Method name must be a string, {$k} given.");
+                    }
                 }
             }],
         ]);
diff --git a/src/Testing/AirwireResponse.php b/src/Testing/AirwireResponse.php
index f4054a8..a4da853 100644
--- a/src/Testing/AirwireResponse.php
+++ b/src/Testing/AirwireResponse.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Airwire\Testing;
 
 class AirwireResponse
diff --git a/src/Testing/RequestBuilder.php b/src/Testing/RequestBuilder.php
index cac3488..67dc26a 100644
--- a/src/Testing/RequestBuilder.php
+++ b/src/Testing/RequestBuilder.php
@@ -1,8 +1,9 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Airwire\Testing;
 
-use Airwire\Airwire;
 use Airwire\Component;
 use Airwire\Http\AirwireController;
 
@@ -10,7 +11,8 @@ class RequestBuilder
 {
     public function __construct(
         public string $alias,
-    ) {}
+    ) {
+    }
 
     public string $target = 'test';
 
diff --git a/src/Testing/ResponseMetadata.php b/src/Testing/ResponseMetadata.php
index e28f96c..1934c97 100644
--- a/src/Testing/ResponseMetadata.php
+++ b/src/Testing/ResponseMetadata.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Airwire\Testing;
 
 class ResponseMetadata
diff --git a/src/TypehintConverter.php b/src/TypehintConverter.php
index 3da417b..d8e4b25 100644
--- a/src/TypehintConverter.php
+++ b/src/TypehintConverter.php
@@ -1,9 +1,10 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Airwire;
 
 use Airwire\Attributes\Wired;
-use Illuminate\Database\Eloquent\Collection as EloquentCollection;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\Relation;
 use Illuminate\Support\Collection;
@@ -206,7 +207,7 @@ class TypehintConverter
             }
         }
 
-        return join(' | ', $results);
+        return implode(' | ', $results);
     }
 
     public function convertMethod(object $object, string $method): string
@@ -228,7 +229,7 @@ class TypehintConverter
                 $types[] = 'null';
             }
 
-            $parameters[$parameter->getName()] = join(' | ', array_map(fn (ReflectionNamedType $type) => $this->convertType($type->getName(), 'parameter'), $types));
+            $parameters[$parameter->getName()] = implode(' | ', array_map(fn (ReflectionNamedType $type) => $this->convertType($type->getName(), 'parameter'), $types));
         }
 
         $parameters = collect($parameters)->map(fn (string $type, string $name) => "{$name}: {$type}")->join(', ');