lib/steep/errors.rb in steep-0.9.0 vs lib/steep/errors.rb in steep-0.10.0

@@ -516,11 +516,11 @@
         super(node: node)
         @unexpected_keywords = unexpected_keywords
       end
 
       def to_s
-        "#{location_to_str}: UnexpectedKeyword: #{unexpected_keywords.join(", ")}"
+        "#{location_to_str}: UnexpectedKeyword: #{unexpected_keywords.to_a.join(", ")}"
       end
     end
 
     class MissingKeyword < Base
       attr_reader :missing_keywords
@@ -529,10 +529,10 @@
         super(node: node)
         @missing_keywords = missing_keywords
       end
 
       def to_s
-        "#{location_to_str}: MissingKeyword: #{missing_keywords.join(", ")}"
+        "#{location_to_str}: MissingKeyword: #{missing_keywords.to_a.join(", ")}"
       end
     end
   end
 end