Fix AST output for Command and CommandCall nodes

Author: kddnewton

CHANGELOG.md

@@ -6,6 +6,10 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a
 
 ## [Unreleased]
 
+### Changed
+
+- Fixed the AST output by adding blocks to `Command` and `CommandCall` nodes in the `FieldVisitor`.
+
 ## [6.0.1] - 2023-02-26
 
 ### Added

lib/syntax_tree/field_visitor.rb

@@ -263,6 +263,7 @@ def visit_command(node)
         node(node, "command") do
           field("message", node.message)
           field("arguments", node.arguments)
+          field("block", node.block) if node.block
           comments(node)
         end
       end
@@ -273,6 +274,7 @@ def visit_command_call(node)
           field("operator", node.operator)
           field("message", node.message)
           field("arguments", node.arguments) if node.arguments
+          field("block", node.block) if node.block
           comments(node)
         end
       end