--- a/util/error.lua	Fri Sep 25 12:27:45 2020 +0100
+++ b/util/error.lua	Fri Sep 25 12:32:43 2020 +0100
@@ -58,9 +58,11 @@
 end
 
 local function init(source, registry)
-	return function (e, context)
-		return new(e, context, registry, source);
-	end
+	return {
+		new = function (e, context)
+			return new(e, context, registry, source);
+		end;
+	};
 end
 
 local function coerce(ok, err, ...)