Merge pull request #6906 from plotly/improve-amdefine-test

improve amdefine and requirejs against an empty object

Author: archmoj

tasks/test_amdefine.js

@@ -16,7 +16,7 @@ if(typeof define !== 'function') {
 define(function(require) {
     var plotly = require('../dist/plotly.min.js');
 
-    if(plotly) {
+    if(plotly && plotly.PlotSchema) {
         console.log(plotly);
     } else {
         throw 'Error: loading with amdefine';

tasks/test_requirejs.js

@@ -18,7 +18,7 @@ requirejs.config({
 
 requirejs(['plotly'],
 function(plotly) {
-    if(plotly) {
+    if(plotly && plotly.PlotSchema) {
         console.log(plotly);
     } else {
         throw 'Error: loading with requirejs';