1 files changed, 9 insertions, 6 deletions
diff --git a/lib/handlebars/compiler/code-gen.js b/lib/handlebars/compiler/code-gen.js
index 7d1b4ca..0fddb7c 100644
--- a/lib/handlebars/compiler/code-gen.js
+++ b/lib/handlebars/compiler/code-gen.js
@@ -79,18 +79,18 @@ CodeGen.prototype = {
   },
 
   empty: function(loc) {
-    loc = loc || this.currentLocation || {};
-    return new SourceNode(loc.firstLine, loc.firstColumn, this.srcFile);
+    loc = loc || this.currentLocation || {start:{}};
+    return new SourceNode(loc.start.line, loc.start.column, this.srcFile);
   },
   wrap: function(chunk, loc) {
     if (chunk instanceof SourceNode) {
       return chunk;
     }
 
-    loc = loc || this.currentLocation || {};
+    loc = loc || this.currentLocation || {start:{}};
     chunk = castChunk(chunk, this, loc);
 
-    return new SourceNode(loc.firstLine, loc.firstColumn, this.srcFile, chunk);
+    return new SourceNode(loc.start.line, loc.start.column, this.srcFile, chunk);
   },
 
   functionCall: function(fn, type, params) {
@@ -99,7 +99,7 @@ CodeGen.prototype = {
   },
 
   quotedString: function(str) {
-    return '"' + str
+    return '"' + (str + '')
       .replace(/\\/g, '\\\\')
       .replace(/"/g, '\\"')
       .replace(/\n/g, '\\n')
@@ -113,7 +113,10 @@ CodeGen.prototype = {
 
     for (var key in obj) {
       if (obj.hasOwnProperty(key)) {
-        pairs.push([this.quotedString(key), ':', castChunk(obj[key], this)]);
+        var value = castChunk(obj[key], this);
+        if (value !== 'undefined') {
+          pairs.push([this.quotedString(key), ':', value]);
+        }
       }
     }