sankey hide unsupported top-level properties from plot-schema

Author: antoinerg

src/plot_api/edit_types.js

@@ -10,6 +10,7 @@
 
 var Lib = require('../lib');
 var extendFlat = Lib.extendFlat;
+var extendDeepAll = Lib.extendDeepAll;
 var isPlainObject = Lib.isPlainObject;
 
 var traceOpts = {
@@ -115,7 +116,7 @@ function falseObj(keys) {
  * @return {object} a new attributes object with `editType` modified as directed
  */
 function overrideAll(attrs, editTypeOverride, overrideContainers) {
-    var out = extendFlat({}, attrs);
+    var out = extendDeepAll({}, attrs);
     for(var key in out) {
         var attr = out[key];
         if(isPlainObject(attr)) {

src/traces/sankey/attributes.js

@@ -185,5 +185,7 @@ module.exports = overrideAll({
         hoverinfo: extendFlat({}, plotAttrs.hoverinfo, {flags: []}),
         hoverlabel: fxAttrs.hoverlabel, // needs editType override,
         description: 'The links of the Sankey plot.'
-    }
+    },
+    hoverinfo: undefined,
+    hoverlabel: undefined
 }, 'calc', 'nested');