Added definition of major versions of the framework

composer.json

@@ -23,6 +23,10 @@
         "ramsey/uuid": "^3.7|^4.0",
         "symfony/var-dumper": "^4.0|^5.0"
     },
+    "require-dev": {
+        "laravel/framework": "^6.0|^7.0|^8.0",
+        "laravel/lumen-framework": "^6.0|^7.0|^8.0"
+    },
     "conflict": {
         "andrey-helldar/laravel-support": "*"
     },

src/Facades/AppVersion.php

@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DragonCode\LaravelSupport\Facades;
+
+use DragonCode\LaravelSupport\Support\AppVersion as Support;
+use Illuminate\Support\Facades\Facade;
+
+/**
+ * @method static bool is6x()
+ * @method static bool is7x()
+ * @method static bool is8x()
+ */
+class AppVersion extends Facade
+{
+    protected static function getFacadeAccessor(): string
+    {
+        return Support::class;
+    }
+}

src/Support/AppVersion.php

@@ -0,0 +1,46 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DragonCode\LaravelSupport\Support;
+
+use DragonCode\LaravelSupport\Facades\App as AppHelper;
+use Illuminate\Foundation\Application;
+use Illuminate\Support\Str;
+
+class AppVersion
+{
+    public function is6x(): bool
+    {
+        return $this->major() === 6;
+    }
+
+    public function is7x(): bool
+    {
+        return $this->major() === 7;
+    }
+
+    public function is8x(): bool
+    {
+        return $this->major() === 8;
+    }
+
+    protected function major(): int
+    {
+        return (int) Str::before($this->version(), '.');
+    }
+
+    protected function version(): string
+    {
+        if (AppHelper::isLumen()) {
+            $version = app()->version();
+
+            $version = Str::after($version, '(');
+            $version = Str::before($version, ')');
+
+            return $version;
+        }
+
+        return Application::VERSION;
+    }
+}