From c962afc56611c3e953bc0ac1bcdca3a5241d33ac Mon Sep 17 00:00:00 2001
From: Robbie Averill <robbie@silverstripe.com>
Date: Mon, 30 Jul 2018 16:36:09 +1200
Subject: [PATCH] FIX Ensure that __toString return value is always casted as a
 string

`json_encode` can return false on failure, which causes PHP errors since `__toString` must return a string.
---
 src/Language/AST/Node.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Language/AST/Node.php b/src/Language/AST/Node.php
index 4645c4f..af9a775 100644
--- a/src/Language/AST/Node.php
+++ b/src/Language/AST/Node.php
@@ -84,7 +84,7 @@ abstract class Node
     public function __toString()
     {
         $tmp = $this->toArray(true);
-        return json_encode($tmp);
+        return (string) json_encode($tmp);
     }
 
     /**