From e7afa197f02e2d6436c52709ff1ba2d2f7c07c67 Mon Sep 17 00:00:00 2001
From: Dennis Eichhorn <spl1nes.com@googlemail.com>
Date: Thu, 15 Aug 2019 21:55:12 +0200
Subject: [PATCH] Implement php 7.4 type hints

---
 Controller/Controller.php | 4 ++--
 Models/Invoice.php        | 4 ++--
 Models/InvoiceMapper.php  | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/Controller/Controller.php b/Controller/Controller.php
index f0d04d2..73698f1 100644
--- a/Controller/Controller.php
+++ b/Controller/Controller.php
@@ -66,7 +66,7 @@ class Controller extends ModuleAbstract implements WebInterface
      * @var string[]
      * @since 1.0.0
      */
-    protected static $providing = [];
+    protected static array $providing = [];
 
     /**
      * Dependencies.
@@ -74,5 +74,5 @@ class Controller extends ModuleAbstract implements WebInterface
      * @var string[]
      * @since 1.0.0
      */
-    protected static $dependencies = [];
+    protected static array $dependencies = [];
 }
diff --git a/Models/Invoice.php b/Models/Invoice.php
index d34bcb5..bc78aee 100644
--- a/Models/Invoice.php
+++ b/Models/Invoice.php
@@ -56,7 +56,7 @@ class Invoice implements \JsonSerializable
     /**
      * Invoice created at.
      *
-     * @var \DateTime
+     * @var null|\DateTime
      * @since 1.0.0
      */
     private $createdAt = null;
@@ -64,7 +64,7 @@ class Invoice implements \JsonSerializable
     /**
      * Invoice send at.
      *
-     * @var \DateTime
+     * @var null|\DateTime
      * @since 1.0.0
      */
     private $send = null;
diff --git a/Models/InvoiceMapper.php b/Models/InvoiceMapper.php
index bd853bb..68e3262 100644
--- a/Models/InvoiceMapper.php
+++ b/Models/InvoiceMapper.php
@@ -32,7 +32,7 @@ final class InvoiceMapper extends DataMapperAbstract
      * @var string
      * @since 1.0.0
      */
-    protected static $primaryField = 'billing_invoice_id';
+    protected static string $primaryField = 'billing_invoice_id';
 
     /**
      * Primary table.
@@ -40,5 +40,5 @@ final class InvoiceMapper extends DataMapperAbstract
      * @var string
      * @since 1.0.0
      */
-    protected static $table = 'billing_invoice';
+    protected static string $table = 'billing_invoice';
 }