From a2d0ad921ee1ba275ba8ccc422e0caefe9dad2a3 Mon Sep 17 00:00:00 2001
From: Aerendir <hello@aerendir.me>
Date: Fri, 11 Sep 2020 18:40:59 +0200
Subject: [PATCH] Add rule `declare_strict_types` to PHP CS Fixer.

---
 .php_cs.dist                                                    | 1 +
 dev/Command/CheckCommand.php                                    | 2 ++
 dev/Helper/ReflectionHelper.php                                 | 2 ++
 src/Controller/WebhookController.php                            | 2 ++
 src/DependencyInjection/Configuration.php                       | 2 ++
 src/DependencyInjection/SHQStripeExtension.php                  | 2 ++
 src/Event/AbstractStripeChargeEvent.php                         | 2 ++
 src/Event/AbstractStripeCustomerEvent.php                       | 2 ++
 src/Event/AbstractStripeEvent.php                               | 2 ++
 src/Event/AbstractStripeWebhookEventEvent.php                   | 2 ++
 src/Event/StripeChargeCreateEvent.php                           | 2 ++
 src/Event/StripeCustomerCreateEvent.php                         | 2 ++
 src/Event/StripeCustomerUpdateEvent.php                         | 2 ++
 src/Event/StripeWebhookAccountEventEvent.php                    | 2 ++
 src/Event/StripeWebhookApplicationFeeEventEvent.php             | 2 ++
 src/Event/StripeWebhookBalanceEventEvent.php                    | 2 ++
 src/Event/StripeWebhookBitcoinEventEvent.php                    | 2 ++
 src/Event/StripeWebhookChargeEventEvent.php                     | 2 ++
 src/Event/StripeWebhookCouponEventEvent.php                     | 2 ++
 src/Event/StripeWebhookCustomerEventEvent.php                   | 2 ++
 src/Event/StripeWebhookInvoiceEventEvent.php                    | 2 ++
 src/Event/StripeWebhookInvoiceItemEventEvent.php                | 2 ++
 src/Event/StripeWebhookOrderEventEvent.php                      | 2 ++
 src/Event/StripeWebhookOrderReturnEventEvent.php                | 2 ++
 src/Event/StripeWebhookPingEventEvent.php                       | 2 ++
 src/Event/StripeWebhookProductEventEvent.php                    | 2 ++
 src/Event/StripeWebhookRecipientEventEvent.php                  | 2 ++
 src/Event/StripeWebhookReviewEvent.php                          | 2 ++
 src/Event/StripeWebhookSkuEventEvent.php                        | 2 ++
 src/Event/StripeWebhookSourceEventEvent.php                     | 2 ++
 src/Event/StripeWebhookTransferEventEvent.php                   | 2 ++
 src/Form/Type/CreditCardStripeTokenType.php                     | 2 ++
 src/Manager/StripeManager.php                                   | 2 ++
 src/Model/StripeLocalCard.php                                   | 2 ++
 src/Model/StripeLocalCharge.php                                 | 2 ++
 src/Model/StripeLocalCustomer.php                               | 2 ++
 src/Model/StripeLocalResourceInterface.php                      | 2 ++
 src/Model/StripeLocalWebhookEvent.php                           | 2 ++
 src/Repository/ByStripeIdInterface.php                          | 2 ++
 src/Repository/StripeLocalCardRepository.php                    | 2 ++
 src/Repository/StripeLocalChargeRepository.php                  | 2 ++
 src/Repository/StripeLocalCustomerRepository.php                | 2 ++
 src/Repository/StripeLocalWebhookEventRepository.php            | 2 ++
 src/SHQStripeBundle.php                                         | 2 ++
 src/Subscriber/AbstractStripeSubscriber.php                     | 2 ++
 src/Subscriber/StripeChargeSubscriber.php                       | 2 ++
 src/Subscriber/StripeCustomerSubscriber.php                     | 2 ++
 src/Syncer/AbstractSyncer.php                                   | 2 ++
 src/Syncer/CardSyncer.php                                       | 2 ++
 src/Syncer/ChargeSyncer.php                                     | 2 ++
 src/Syncer/CustomerSyncer.php                                   | 2 ++
 src/Syncer/SyncerInterface.php                                  | 2 ++
 src/Syncer/WebhookEventSyncer.php                               | 2 ++
 src/Util/EventGuesser.php                                       | 2 ++
 tests/DependencyInjection/AbstractStripeBundleExtensionTest.php | 2 ++
 tests/DependencyInjection/YamlStripeBundleExtensionTest.php     | 2 ++
 tests/Event/AbstractStripeChargeEventTest.php                   | 2 ++
 tests/Event/AbstractStripeCustomerEventTest.php                 | 2 ++
 tests/Event/AbstractStripeWebhookEventEventTest.php             | 2 ++
 tests/Form/Type/CreditCardStripeTokenTypeTest.php               | 2 ++
 tests/Model/StripeLocalCardTest.php                             | 2 ++
 tests/Model/StripeLocalChargeTest.php                           | 2 ++
 tests/Model/StripeLocalCustomerTest.php                         | 2 ++
 tests/Model/StripeLocalWebhookEventTest.php                     | 2 ++
 tests/ModelTestCase.php                                         | 2 ++
 65 files changed, 129 insertions(+)

diff --git a/.php_cs.dist b/.php_cs.dist
index 2caa4221..51d44ac6 100644
--- a/.php_cs.dist
+++ b/.php_cs.dist
@@ -43,6 +43,7 @@ return PhpCsFixer\Config::create()
             ]
         ],
         'combine_consecutive_unsets' => true,
+        'declare_strict_types' => true,
         'fully_qualified_strict_types' => true,
         'global_namespace_import' => [
             'import_classes' => false,
diff --git a/dev/Command/CheckCommand.php b/dev/Command/CheckCommand.php
index 9e789712..8f14bc19 100644
--- a/dev/Command/CheckCommand.php
+++ b/dev/Command/CheckCommand.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/dev/Helper/ReflectionHelper.php b/dev/Helper/ReflectionHelper.php
index f3c4f3d4..8ddf1b67 100644
--- a/dev/Helper/ReflectionHelper.php
+++ b/dev/Helper/ReflectionHelper.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Controller/WebhookController.php b/src/Controller/WebhookController.php
index ae302cd1..e8283c03 100755
--- a/src/Controller/WebhookController.php
+++ b/src/Controller/WebhookController.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/DependencyInjection/Configuration.php b/src/DependencyInjection/Configuration.php
index 5146921c..1c0066e1 100644
--- a/src/DependencyInjection/Configuration.php
+++ b/src/DependencyInjection/Configuration.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/DependencyInjection/SHQStripeExtension.php b/src/DependencyInjection/SHQStripeExtension.php
index 18cefffe..cca50ba2 100644
--- a/src/DependencyInjection/SHQStripeExtension.php
+++ b/src/DependencyInjection/SHQStripeExtension.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/AbstractStripeChargeEvent.php b/src/Event/AbstractStripeChargeEvent.php
index 6cd431c1..39a35b9d 100644
--- a/src/Event/AbstractStripeChargeEvent.php
+++ b/src/Event/AbstractStripeChargeEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/AbstractStripeCustomerEvent.php b/src/Event/AbstractStripeCustomerEvent.php
index 19744486..8f80dfb3 100644
--- a/src/Event/AbstractStripeCustomerEvent.php
+++ b/src/Event/AbstractStripeCustomerEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/AbstractStripeEvent.php b/src/Event/AbstractStripeEvent.php
index b8911534..53865a4a 100644
--- a/src/Event/AbstractStripeEvent.php
+++ b/src/Event/AbstractStripeEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/AbstractStripeWebhookEventEvent.php b/src/Event/AbstractStripeWebhookEventEvent.php
index 9da6237d..2d57253e 100644
--- a/src/Event/AbstractStripeWebhookEventEvent.php
+++ b/src/Event/AbstractStripeWebhookEventEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/StripeChargeCreateEvent.php b/src/Event/StripeChargeCreateEvent.php
index 1a422c7e..f537ebae 100644
--- a/src/Event/StripeChargeCreateEvent.php
+++ b/src/Event/StripeChargeCreateEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/StripeCustomerCreateEvent.php b/src/Event/StripeCustomerCreateEvent.php
index 68ac0dfb..1bed4678 100644
--- a/src/Event/StripeCustomerCreateEvent.php
+++ b/src/Event/StripeCustomerCreateEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/StripeCustomerUpdateEvent.php b/src/Event/StripeCustomerUpdateEvent.php
index a38947f6..4ac16244 100644
--- a/src/Event/StripeCustomerUpdateEvent.php
+++ b/src/Event/StripeCustomerUpdateEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/StripeWebhookAccountEventEvent.php b/src/Event/StripeWebhookAccountEventEvent.php
index 7fe01968..b71536f6 100644
--- a/src/Event/StripeWebhookAccountEventEvent.php
+++ b/src/Event/StripeWebhookAccountEventEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/StripeWebhookApplicationFeeEventEvent.php b/src/Event/StripeWebhookApplicationFeeEventEvent.php
index 198e00a0..3785c326 100644
--- a/src/Event/StripeWebhookApplicationFeeEventEvent.php
+++ b/src/Event/StripeWebhookApplicationFeeEventEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/StripeWebhookBalanceEventEvent.php b/src/Event/StripeWebhookBalanceEventEvent.php
index d6b8988f..de0f07b3 100644
--- a/src/Event/StripeWebhookBalanceEventEvent.php
+++ b/src/Event/StripeWebhookBalanceEventEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/StripeWebhookBitcoinEventEvent.php b/src/Event/StripeWebhookBitcoinEventEvent.php
index 6bd9bd90..cc01d493 100644
--- a/src/Event/StripeWebhookBitcoinEventEvent.php
+++ b/src/Event/StripeWebhookBitcoinEventEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/StripeWebhookChargeEventEvent.php b/src/Event/StripeWebhookChargeEventEvent.php
index 6ec14e11..0804dc57 100644
--- a/src/Event/StripeWebhookChargeEventEvent.php
+++ b/src/Event/StripeWebhookChargeEventEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/StripeWebhookCouponEventEvent.php b/src/Event/StripeWebhookCouponEventEvent.php
index 783a49ec..89f3a93e 100644
--- a/src/Event/StripeWebhookCouponEventEvent.php
+++ b/src/Event/StripeWebhookCouponEventEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/StripeWebhookCustomerEventEvent.php b/src/Event/StripeWebhookCustomerEventEvent.php
index 423ae627..80e66d7a 100644
--- a/src/Event/StripeWebhookCustomerEventEvent.php
+++ b/src/Event/StripeWebhookCustomerEventEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/StripeWebhookInvoiceEventEvent.php b/src/Event/StripeWebhookInvoiceEventEvent.php
index b449026f..1e74b644 100644
--- a/src/Event/StripeWebhookInvoiceEventEvent.php
+++ b/src/Event/StripeWebhookInvoiceEventEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/StripeWebhookInvoiceItemEventEvent.php b/src/Event/StripeWebhookInvoiceItemEventEvent.php
index 5b3d55ba..c97b6e0f 100644
--- a/src/Event/StripeWebhookInvoiceItemEventEvent.php
+++ b/src/Event/StripeWebhookInvoiceItemEventEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/StripeWebhookOrderEventEvent.php b/src/Event/StripeWebhookOrderEventEvent.php
index 2d7c3ca4..69cc67be 100644
--- a/src/Event/StripeWebhookOrderEventEvent.php
+++ b/src/Event/StripeWebhookOrderEventEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/StripeWebhookOrderReturnEventEvent.php b/src/Event/StripeWebhookOrderReturnEventEvent.php
index 973ded87..d81760d9 100644
--- a/src/Event/StripeWebhookOrderReturnEventEvent.php
+++ b/src/Event/StripeWebhookOrderReturnEventEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/StripeWebhookPingEventEvent.php b/src/Event/StripeWebhookPingEventEvent.php
index 526a324a..236299d7 100644
--- a/src/Event/StripeWebhookPingEventEvent.php
+++ b/src/Event/StripeWebhookPingEventEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/StripeWebhookProductEventEvent.php b/src/Event/StripeWebhookProductEventEvent.php
index b49c46c3..056d3c02 100644
--- a/src/Event/StripeWebhookProductEventEvent.php
+++ b/src/Event/StripeWebhookProductEventEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/StripeWebhookRecipientEventEvent.php b/src/Event/StripeWebhookRecipientEventEvent.php
index 74c5b9ed..1c19e75c 100644
--- a/src/Event/StripeWebhookRecipientEventEvent.php
+++ b/src/Event/StripeWebhookRecipientEventEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/StripeWebhookReviewEvent.php b/src/Event/StripeWebhookReviewEvent.php
index bab982b6..9841bf07 100644
--- a/src/Event/StripeWebhookReviewEvent.php
+++ b/src/Event/StripeWebhookReviewEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/StripeWebhookSkuEventEvent.php b/src/Event/StripeWebhookSkuEventEvent.php
index 06bff13d..c9b8dd2d 100644
--- a/src/Event/StripeWebhookSkuEventEvent.php
+++ b/src/Event/StripeWebhookSkuEventEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/StripeWebhookSourceEventEvent.php b/src/Event/StripeWebhookSourceEventEvent.php
index d6135fd2..7e4f33c0 100644
--- a/src/Event/StripeWebhookSourceEventEvent.php
+++ b/src/Event/StripeWebhookSourceEventEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Event/StripeWebhookTransferEventEvent.php b/src/Event/StripeWebhookTransferEventEvent.php
index 007b976f..eec7fa32 100644
--- a/src/Event/StripeWebhookTransferEventEvent.php
+++ b/src/Event/StripeWebhookTransferEventEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Form/Type/CreditCardStripeTokenType.php b/src/Form/Type/CreditCardStripeTokenType.php
index 4fa12ab2..32692a6e 100644
--- a/src/Form/Type/CreditCardStripeTokenType.php
+++ b/src/Form/Type/CreditCardStripeTokenType.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Manager/StripeManager.php b/src/Manager/StripeManager.php
index 310bbf72..6f8c86c0 100644
--- a/src/Manager/StripeManager.php
+++ b/src/Manager/StripeManager.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Model/StripeLocalCard.php b/src/Model/StripeLocalCard.php
index 2f676126..14670e60 100644
--- a/src/Model/StripeLocalCard.php
+++ b/src/Model/StripeLocalCard.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Model/StripeLocalCharge.php b/src/Model/StripeLocalCharge.php
index 0370a93b..1581d0cc 100644
--- a/src/Model/StripeLocalCharge.php
+++ b/src/Model/StripeLocalCharge.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Model/StripeLocalCustomer.php b/src/Model/StripeLocalCustomer.php
index e1737850..74653eba 100644
--- a/src/Model/StripeLocalCustomer.php
+++ b/src/Model/StripeLocalCustomer.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Model/StripeLocalResourceInterface.php b/src/Model/StripeLocalResourceInterface.php
index 88324e01..dbe3de15 100644
--- a/src/Model/StripeLocalResourceInterface.php
+++ b/src/Model/StripeLocalResourceInterface.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Model/StripeLocalWebhookEvent.php b/src/Model/StripeLocalWebhookEvent.php
index 9301fb2d..20c7df88 100644
--- a/src/Model/StripeLocalWebhookEvent.php
+++ b/src/Model/StripeLocalWebhookEvent.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Repository/ByStripeIdInterface.php b/src/Repository/ByStripeIdInterface.php
index 686b6ba5..4de80538 100644
--- a/src/Repository/ByStripeIdInterface.php
+++ b/src/Repository/ByStripeIdInterface.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Repository/StripeLocalCardRepository.php b/src/Repository/StripeLocalCardRepository.php
index d9cedebc..48172597 100644
--- a/src/Repository/StripeLocalCardRepository.php
+++ b/src/Repository/StripeLocalCardRepository.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Repository/StripeLocalChargeRepository.php b/src/Repository/StripeLocalChargeRepository.php
index 77badb0b..43526575 100644
--- a/src/Repository/StripeLocalChargeRepository.php
+++ b/src/Repository/StripeLocalChargeRepository.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Repository/StripeLocalCustomerRepository.php b/src/Repository/StripeLocalCustomerRepository.php
index 44e3ee22..48a27684 100644
--- a/src/Repository/StripeLocalCustomerRepository.php
+++ b/src/Repository/StripeLocalCustomerRepository.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Repository/StripeLocalWebhookEventRepository.php b/src/Repository/StripeLocalWebhookEventRepository.php
index f875e992..d64a6578 100644
--- a/src/Repository/StripeLocalWebhookEventRepository.php
+++ b/src/Repository/StripeLocalWebhookEventRepository.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/SHQStripeBundle.php b/src/SHQStripeBundle.php
index acd34863..3c284fa6 100644
--- a/src/SHQStripeBundle.php
+++ b/src/SHQStripeBundle.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Subscriber/AbstractStripeSubscriber.php b/src/Subscriber/AbstractStripeSubscriber.php
index 3415af27..93843e40 100644
--- a/src/Subscriber/AbstractStripeSubscriber.php
+++ b/src/Subscriber/AbstractStripeSubscriber.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Subscriber/StripeChargeSubscriber.php b/src/Subscriber/StripeChargeSubscriber.php
index 01c5556b..cbe352b2 100644
--- a/src/Subscriber/StripeChargeSubscriber.php
+++ b/src/Subscriber/StripeChargeSubscriber.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Subscriber/StripeCustomerSubscriber.php b/src/Subscriber/StripeCustomerSubscriber.php
index 42ae17ee..26dfd570 100644
--- a/src/Subscriber/StripeCustomerSubscriber.php
+++ b/src/Subscriber/StripeCustomerSubscriber.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Syncer/AbstractSyncer.php b/src/Syncer/AbstractSyncer.php
index bdd8cde5..6fc82a9e 100644
--- a/src/Syncer/AbstractSyncer.php
+++ b/src/Syncer/AbstractSyncer.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Syncer/CardSyncer.php b/src/Syncer/CardSyncer.php
index 11e2d8b4..41832d4f 100644
--- a/src/Syncer/CardSyncer.php
+++ b/src/Syncer/CardSyncer.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Syncer/ChargeSyncer.php b/src/Syncer/ChargeSyncer.php
index 4226a3c8..f43d94c0 100644
--- a/src/Syncer/ChargeSyncer.php
+++ b/src/Syncer/ChargeSyncer.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Syncer/CustomerSyncer.php b/src/Syncer/CustomerSyncer.php
index d480d15f..33e6f5e5 100644
--- a/src/Syncer/CustomerSyncer.php
+++ b/src/Syncer/CustomerSyncer.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Syncer/SyncerInterface.php b/src/Syncer/SyncerInterface.php
index 0cb1ff87..5af331fe 100644
--- a/src/Syncer/SyncerInterface.php
+++ b/src/Syncer/SyncerInterface.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Syncer/WebhookEventSyncer.php b/src/Syncer/WebhookEventSyncer.php
index 1e37cf06..f87ecc8b 100644
--- a/src/Syncer/WebhookEventSyncer.php
+++ b/src/Syncer/WebhookEventSyncer.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/src/Util/EventGuesser.php b/src/Util/EventGuesser.php
index 4938525e..f6a2bef9 100644
--- a/src/Util/EventGuesser.php
+++ b/src/Util/EventGuesser.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/tests/DependencyInjection/AbstractStripeBundleExtensionTest.php b/tests/DependencyInjection/AbstractStripeBundleExtensionTest.php
index c0a641a9..df566b4e 100644
--- a/tests/DependencyInjection/AbstractStripeBundleExtensionTest.php
+++ b/tests/DependencyInjection/AbstractStripeBundleExtensionTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/tests/DependencyInjection/YamlStripeBundleExtensionTest.php b/tests/DependencyInjection/YamlStripeBundleExtensionTest.php
index 5cce0316..c37f1bee 100644
--- a/tests/DependencyInjection/YamlStripeBundleExtensionTest.php
+++ b/tests/DependencyInjection/YamlStripeBundleExtensionTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/tests/Event/AbstractStripeChargeEventTest.php b/tests/Event/AbstractStripeChargeEventTest.php
index 8573918c..6ac66cf7 100644
--- a/tests/Event/AbstractStripeChargeEventTest.php
+++ b/tests/Event/AbstractStripeChargeEventTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/tests/Event/AbstractStripeCustomerEventTest.php b/tests/Event/AbstractStripeCustomerEventTest.php
index 19f4460f..9bad2060 100644
--- a/tests/Event/AbstractStripeCustomerEventTest.php
+++ b/tests/Event/AbstractStripeCustomerEventTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/tests/Event/AbstractStripeWebhookEventEventTest.php b/tests/Event/AbstractStripeWebhookEventEventTest.php
index d053fc95..64ba90cd 100644
--- a/tests/Event/AbstractStripeWebhookEventEventTest.php
+++ b/tests/Event/AbstractStripeWebhookEventEventTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/tests/Form/Type/CreditCardStripeTokenTypeTest.php b/tests/Form/Type/CreditCardStripeTokenTypeTest.php
index b9110a15..acca6cab 100644
--- a/tests/Form/Type/CreditCardStripeTokenTypeTest.php
+++ b/tests/Form/Type/CreditCardStripeTokenTypeTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/tests/Model/StripeLocalCardTest.php b/tests/Model/StripeLocalCardTest.php
index 77e4669b..c99c19aa 100644
--- a/tests/Model/StripeLocalCardTest.php
+++ b/tests/Model/StripeLocalCardTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/tests/Model/StripeLocalChargeTest.php b/tests/Model/StripeLocalChargeTest.php
index ebac8501..f86e2c8e 100644
--- a/tests/Model/StripeLocalChargeTest.php
+++ b/tests/Model/StripeLocalChargeTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/tests/Model/StripeLocalCustomerTest.php b/tests/Model/StripeLocalCustomerTest.php
index 3590500e..201e7740 100644
--- a/tests/Model/StripeLocalCustomerTest.php
+++ b/tests/Model/StripeLocalCustomerTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/tests/Model/StripeLocalWebhookEventTest.php b/tests/Model/StripeLocalWebhookEventTest.php
index 67e60d80..294a508f 100644
--- a/tests/Model/StripeLocalWebhookEventTest.php
+++ b/tests/Model/StripeLocalWebhookEventTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *
diff --git a/tests/ModelTestCase.php b/tests/ModelTestCase.php
index d0dce2b3..d3cc1ead 100644
--- a/tests/ModelTestCase.php
+++ b/tests/ModelTestCase.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  * This file is part of the Serendipity HQ Stripe Bundle.
  *