Fix fills on segment-less marker-less traces

src/components/drawing/index.js

@@ -198,7 +198,11 @@ drawing.fillGroupStyle = function(s) {
     s.style('stroke-width', 0)
     .each(function(d) {
         var shape = d3.select(this);
-        shape.call(Color.fill, d[0].trace.fillcolor);
+        // N.B. 'd' won't be a calcdata item when
+        // fill !== 'none' on a segment-less and marker-less trace
+        if(d[0].trace) {
+            shape.call(Color.fill, d[0].trace.fillcolor);
+        }
     });
 };
 

test/jasmine/tests/scatter_test.js

@@ -1104,6 +1104,20 @@ describe('end-to-end scatter tests', function() {
         .catch(failTest)
         .then(done);
     });
+
+    it('should not error out when segment-less marker-less fill traces', function(done) {
+        Plotly.plot(gd, [{
+            x: [1, 2, 3, 4],
+            y: [null, null, null, null],
+            fill: 'tonexty'
+        }])
+        .then(function() {
+            expect(d3.selectAll('.js-fill').size()).toBe(1, 'js-fill is there');
+            expect(d3.select('.js-fill').attr('d')).toBe('M0,0Z', 'js-fill has an empty path');
+        })
+        .catch(failTest)
+        .then(done);
+    });
 });
 
 describe('stacked area', function() {