Merge branch 'master' into code-generator

Conflicts:
	lib/6to5/transformers/classes.js
	test/fixtures/transformation/source-maps/class/expected.js
	test/fixtures/transformation/source-maps/class/source-mappings.json

lib/6to5/templates/class-props.js

@@ -0,0 +1,4 @@
+(function (child, staticProps, instanceProps) {
+  if (staticProps) Object.defineProperties(child, staticProps);
+  if (instanceProps) Object.defineProperties(child.prototype, instanceProps);
+})

lib/6to5/transformers/classes.js

@@ -107,16 +107,28 @@ var buildClassBody = function (file, construct, body, className, superName, node
     }, true));
   }
 
+  var instanceProps;
+  var staticProps;
+
   if (!_.isEmpty(instanceMutatorMap)) {
     var protoId = util.template("prototype-identifier", {
       CLASS_NAME: className
     });
 
-    body.push(util.buildDefineProperties(instanceMutatorMap, protoId));
+    instanceProps = util.buildDefineProperties(instanceMutatorMap, protoId);
   }
 
   if (!_.isEmpty(staticMutatorMap)) {
-    body.push(util.buildDefineProperties(staticMutatorMap, className));
+    staticProps = util.buildDefineProperties(staticMutatorMap, className);
+  }
+
+  if (instanceProps || staticProps) {
+    instanceProps = instanceProps || b.literal(null);
+    staticProps = staticProps || b.literal(null);
+
+    body.push(b.expressionStatement(
+      b.callExpression(file.addDeclaration("class-props"), [className, staticProps, instanceProps])
+    ));
   }
 };
 

lib/6to5/transformers/property-method-assignment.js

@@ -24,6 +24,9 @@ exports.ObjectExpression = function (node, parent, file) {
   return util.template("object-define-properties-closure", {
     KEY: objId,
     OBJECT: node,
-    CONTENT: util.buildDefineProperties(mutatorMap, objId).expression
+    CONTENT: util.template("object-define-properties", {
+      OBJECT: objId,
+      PROPS:  util.buildDefineProperties(mutatorMap)
+    })
   });
 };

lib/6to5/util.js

@@ -100,7 +100,7 @@ exports.pushMutatorMap = function (mutatorMap, key, kind, method) {
   }
 };
 
-exports.buildDefineProperties = function (mutatorMap, keyNode) {
+exports.buildDefineProperties = function (mutatorMap) {
   var objExpr = b.objectExpression([]);
 
   _.each(mutatorMap, function (map, key) {
@@ -117,10 +117,7 @@ exports.buildDefineProperties = function (mutatorMap, keyNode) {
     objExpr.properties.push(propNode);
   });
 
-  return exports.template("object-define-properties", {
-    OBJECT: keyNode,
-    PROPS: objExpr
-  }, true);
+  return objExpr;
 };
 
 exports.template = function (name, nodes, keepExpression) {