Attempt an operational transformation and if the result is not valid JSON then fail

www/common/chainpad.js

@@ -1163,6 +1163,7 @@ module.exports.create = function (userName, authToken, channelId, initialState,
     Common.assert(typeof(initialState) === 'string');
     var realtime = ChainPad.create(userName, authToken, channelId, initialState, conf);
     return {
+        Operation: Operation,
         onPatch: enterChainPad(realtime, function (handler) {
             Common.assert(typeof(handler) === 'function');
             realtime.patchHandlers.push(handler);

www/vdom/main.js

@@ -114,6 +114,11 @@ define([
                                                 transformBy: transformBy
                                             });
 
+                                            var resultOp = ChainPad.Operation.transform0(text, toTransform, transformBy);
+                                            var text2 = ChainPad.Operation.apply(transformBy, text);
+                                            var text3 = ChainPad.Operation.apply(resultOp, text2);
+                                            try { JSON.parse(text3); return resultOp; } catch (e) { console.log(e); }
+
                                             // returning **null** breaks out of the loop
                                             // which transforms conflicting operations
                                             // in theory this should prevent us from producing bad JSON