Parse JSON as text so that it doesn't generate missing tiddlers

core/modules/parsers/textparser.js

@@ -26,6 +26,7 @@ var TextParser = function(type,text,options) {
 exports["text/plain"] = TextParser;
 exports["text/html"] = TextParser;
 exports["application/javascript"] = TextParser;
+exports["application/json"] = TextParser;
 
 })();