use json-ot from bower

bower.json

@@ -32,6 +32,7 @@
     "hyperjson": "~1.2.2",
     "textpatcher": "^1.2.0",
     "proxy-polyfill": "^0.1.5",
-    "chainpad": "^0.2.2"
+    "chainpad": "^0.2.2",
+    "chainpad-json-validator": "^0.1.1"
   }
 }

www/canvas/main.js

@@ -9,7 +9,7 @@ define([
     '/common/crypto.js',
     '/bower_components/textpatcher/TextPatcher.amd.js',
     'json.sortify',
-    '/common/json-ot.js',
+    '/bower_components/chainpad-json-validator/json-ot.js',
     '/bower_components/fabric.js/dist/fabric.min.js',
     '/bower_components/jquery/dist/jquery.min.js',
     '/customize/pad.js'

www/common/chainpad-listmap.js

@@ -3,7 +3,7 @@ define([
     '/api/config?cb=' + Math.random().toString(16).substring(2),
     '/common/crypto.js',
     '/common/realtime-input.js',
-    '/common/json-ot.js',
+    '/bower_components/chainpad-json-validator/json-ot.js',
     'json.sortify',
     '/bower_components/textpatcher/TextPatcher.amd.js',
     '/bower_components/jquery/dist/jquery.min.js',

www/common/json-ot.js

@@ -1,68 +0,0 @@
-define([
-    '/common/realtime-input.js'
-], function () {
-    var ChainPad = window.ChainPad;
-    var JsonOT = {};
-
-    var validate = JsonOT.validate = function (text, toTransform, transformBy) {
-        var DEBUG = window.REALTIME_DEBUG = window.REALTIME_DEBUG || {};
-
-        var resultOp, text2, text3;
-        try {
-            // text = O (mutual common ancestor)
-            // toTransform = A (the first incoming operation)
-            // transformBy = B (the second incoming operation)
-            // threeway merge (0, A, B)
-
-            resultOp = ChainPad.Operation.transform0(text, toTransform, transformBy);
-
-            /*  if after operational transform we find that no op is necessary
-                return null to ignore this patch */
-            if (!resultOp) { return null; }
-
-            text2 = ChainPad.Operation.apply(transformBy, text);
-            text3 = ChainPad.Operation.apply(resultOp, text2);
-            try {
-                JSON.parse(text3);
-                return resultOp;
-            } catch (e) {
-                console.error(e);
-                var info = DEBUG.ot_parseError = {
-                    type: 'resultParseError',
-                    resultOp: resultOp,
-
-                    toTransform: toTransform,
-                    transformBy: transformBy,
-
-                    text1: text,
-                    text2: text2,
-                    text3: text3,
-                    error: e
-                };
-                console.log('Debugging info available at `window.REALTIME_DEBUG.ot_parseError`');
-            }
-        } catch (x) {
-            console.error(x);
-            window.DEBUG.ot_applyError = {
-                type: 'resultParseError',
-                resultOp: resultOp,
-
-                toTransform: toTransform,
-                transformBy: transformBy,
-
-                text1: text,
-                text2: text2,
-                text3: text3,
-                error: x
-            };
-            console.log('Debugging info available at `window.REALTIME_DEBUG.ot_applyError`');
-        }
-
-        // returning **null** breaks out of the loop
-        // which transforms conflicting operations
-        // in theory this should prevent us from producing bad JSON
-        return null;
-    };
-
-    return JsonOT;
-});

www/pad/main.js

@@ -8,7 +8,7 @@ define([
     '/common/hyperscript.js',
     '/common/toolbar.js',
     '/common/cursor.js',
-    '/common/json-ot.js',
+    '/bower_components/chainpad-json-validator/json-ot.js',
     '/common/TypingTests.js',
     'json.sortify',
     '/bower_components/textpatcher/TextPatcher.amd.js',