Explicitly convert ints, bools to the expected type in JavaScript.

libraries/d3.sankey/sankey.js

@@ -14,12 +14,12 @@
     // Grab settings from the settings object passed to us by the D3 module. Use
     // defaults if the settings we want do not exist in the settings object.
     var sankeyType = (settings.sankeyType || 'Sankey');
-    var width = (settings.width || 700);
-    var height = (settings.height || 400);
-    var nodeWidth = (settings.nodeWidth || 24);
-    var nodePadding = (settings.nodePadding || 8);
-    var spread = (settings.spread || true);
-    var iterations = (settings.iterations || 1);
+    var width = parseInt(settings.width || 700);
+    var height = parseInt(settings.height || 400);
+    var nodeWidth = parseInt(settings.nodeWidth || 24);
+    var nodePadding = parseInt(settings.nodePadding || 8);
+    var spread = Boolean(settings.spread || true);
+    var iterations = parseInt(settings.iterations || 1);
     var alignLabel = (settings.alignLabel || 'auto');
 
     // Grab data for the chart if it exists in it's raw form; if not, use empty