Put reused code in a trait so boolean configurables are easy to make

src/Configurables/BooleanConfigurable.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace Erusev\Parsedown\Configurables;
+
+trait BooleanConfigurable
+{
+    /** @var bool */
+    private $enabled = false;
+
+    /**
+     * @param bool $enabled
+     */
+    public function __construct($enabled)
+    {
+        $this->enabled = $enabled;
+    }
+
+    /** @return bool */
+    public function isEnabled()
+    {
+        return $this->enabled;
+    }
+
+    /** @return static */
+    public static function enabled()
+    {
+        return new self(true);
+    }
+
+    /** @return static */
+    public static function initial()
+    {
+        return new self(false);
+    }
+}

src/Configurables/SafeMode.php

@@ -6,32 +6,5 @@ use Erusev\Parsedown\Configurable;
 
 final class SafeMode implements Configurable
 {
-    /** @var bool */
+    use BooleanConfigurable;
-    private $enabled = false;
-
-    /**
-     * @param bool $enabled
-     */
-    public function __construct($enabled)
-    {
-        $this->enabled = $enabled;
-    }
-
-    /** @return bool */
-    public function isEnabled()
-    {
-        return $this->enabled;
-    }
-
-    /** @return self */
-    public static function enabled()
-    {
-        return new self(true);
-    }
-
-    /** @return self */
-    public static function initial()
-    {
-        return new self(false);
-    }
 }

src/Configurables/StrictMode.php

@@ -6,32 +6,5 @@ use Erusev\Parsedown\Configurable;
 
 final class StrictMode implements Configurable
 {
-    /** @var bool */
+    use BooleanConfigurable;
-    private $enabled = false;
-
-    /**
-     * @param bool $enabled
-     */
-    public function __construct($enabled)
-    {
-        $this->enabled = $enabled;
-    }
-
-    /** @return bool */
-    public function isEnabled()
-    {
-        return $this->enabled;
-    }
-
-    /** @return self */
-    public static function enabled()
-    {
-        return new self(true);
-    }
-
-    /** @return self */
-    public static function initial()
-    {
-        return new self(false);
-    }
 }