default empty arrays in attributes.js

Author: monfera

src/traces/sankey/attributes.js

@@ -96,7 +96,7 @@ module.exports = {
     node: {
         label: {
             valType: 'data_array',
-            dflt: '',
+            dflt: [],
             role: 'info',
             description: 'The shown name of the node.'
         },
@@ -152,7 +152,7 @@ module.exports = {
     link: {
         label: {
             valType: 'data_array',
-            dflt: '',
+            dflt: [],
             role: 'info',
             description: 'The shown name of the link.'
         },
@@ -187,16 +187,18 @@ module.exports = {
         source: {
             valType: 'data_array',
             role: 'info',
+            dflt: [],
             description: 'An integer number `[0..nodes.length - 1]` that represents the source node.'
         },
         target: {
             valType: 'data_array',
             role: 'info',
+            dflt: [],
             description: 'An integer number `[0..nodes.length - 1]` that represents the target node.'
         },
         value: {
             valType: 'data_array',
-            dflt: 1,
+            dflt: [],
             role: 'info',
             description: 'A numeric value representing the flow volume value.'
         },

src/traces/sankey/defaults.js

@@ -41,7 +41,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
         return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
     }
 
-    coerce('node.label', []);
+    coerce('node.label');
     coerce('node.pad');
     coerce('node.thickness');
     coerce('node.line.color');
@@ -54,9 +54,9 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
     }));
 
     coerce('link.label');
-    coerce('link.source', []);
-    coerce('link.target', []);
-    coerce('link.value', []);
+    coerce('link.source');
+    coerce('link.target');
+    coerce('link.value');
     coerce('link.line.color');
     coerce('link.line.width');