PHPstan analysis.

src/Rclone/Rclone.php

@@ -6,27 +6,31 @@ use Symfony\Component\Process\Exception\ProcessFailedException;
 
 class Rclone
 {
-    protected $rclone_path;
-    protected $global_options = [];
+    protected string $rclone_path;
+    /**
+     * Global options
+     * 
+     * @var array<string> 
+     */
+    protected array $global_options = [];
 
-    function __construct($rclone_path = "rclone")
+    function __construct(string $rclone_path = "rclone")
     {
         $this->rclone_path = $rclone_path;
     }
 
-    function getVersion()
+    function getVersion(): string
     {
         return $this->exec('--version');
     }
 
-    function getSize($path)
+    function getSize(string $path): int
     {
         $output = $this->exec('size', ['--json', $path]);
-        
-        return (int)json_decode($output[0])->bytes;
+        return (int)json_decode($output)->bytes;
     }
 
-    function copy($src, $dest, $bandwidth = null)
+    function copy(string $src, string $dest, string $bandwidth = null): string
     {   
         $options = array();
 
@@ -40,7 +44,11 @@ class Rclone
         return $this->exec('copy', $options);
     }
 
-    protected function exec(string $command, array $options = array())
+    /**
+     * @param $command Top level Rclone command
+     * @param array<String> $options
+     */
+    protected function exec(string $command, array $options = array()) : string
     {   
         $process = new Process(
             array_merge(