MDL-70301 lib: Upgrade scssphp to 1.4.1

lib/scssphp/Exception/SassScriptException.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace ScssPhp\ScssPhp\Exception;
+
+/**
+ * An exception thrown by SassScript.
+ *
+ * This class does not implement SassException on purpose, as it should
+ * never be returned to the outside code. The compilation will catch it
+ * and replace it with a SassException reporting the location of the
+ * error.
+ */
+class SassScriptException extends \Exception
+{
+    /**
+     * Creates a SassScriptException with support for an argument name.
+     *
+     * This helper ensures a consistent handling of argument names in the
+     * error message, without duplicating it.
+     *
+     * @param string      $message
+     * @param string|null $name    The argument name, without $
+     *
+     * @return SassScriptException
+     */
+    public static function forArgument($message, $name = null)
+    {
+        $varDisplay = !\is_null($name) ? "\${$name}: " : '';
+
+        return new self($varDisplay . $message);
+    }
+}