add linting

inc/class-rewrite-urls.php

+<?php
+/**
+ * Force Core's image functions to use Camo
+ *
+ * @package Camo_Image_Proxy
+ */
+
+namespace Camo_Image_Proxy;
+
+/**
+ * Class Rewrite_URLs
+ */
+class Rewrite_URLs {
+	use Singleton;
+
+	/**
+	 * Hooks
+	 */
+	public function setup() {
+		add_filter( 'wp_get_attachment_image_src', [ $this, 'encode_image' ] );
+	}
+
+	/**
+	 * Camouflage attachment URL
+	 *
+	 * @param array $image Image data.
+	 * @return array
+	 */
+	public function encode_image( array $image ) : array {
+		$url = URL::instance()->encode( $image[0] );
+
+		if ( is_string( $url ) ) {
+			$image[0] = $url;
+		}
+
+		return $image;
+	}
+}