Return raw image buffer instead of an object

platform/node/src/node_map.cpp

@@ -258,10 +258,6 @@ void NodeMap::renderFinished() {
 
         cb->Call(1, argv);
     } else if (img) {
-        auto result = NanNew<v8::Object>();
-        result->Set(NanNew("width"), NanNew(img->width));
-        result->Set(NanNew("height"), NanNew(img->height));
-
         v8::Local<v8::Object> pixels = NanNewBufferHandle(
             reinterpret_cast<char *>(img->pixels.get()),
             size_t(img->width) * size_t(img->height) * sizeof(mbgl::StillImage::Pixel),
@@ -274,11 +270,9 @@ void NodeMap::renderFinished() {
         );
         img.release();
 
-        result->Set(NanNew("pixels"), pixels);
-
         v8::Local<v8::Value> argv[] = {
             NanNull(),
-            result,
+            pixels,
         };
         cb->Call(2, argv);
     } else {

platform/node/test/js/map.test.js

@@ -231,14 +231,12 @@ test('Map', function(t) {
         t.test('returns an image', function(t) {
             var map = new mbgl.Map(options);
             map.load(style);
-            map.render({}, function(err, data) {
+            map.render({}, function(err, pixels) {
                 t.error(err);
 
                 map.release();
 
-                t.ok(data.pixels);
-                t.equal(data.width, 512);
-                t.equal(data.height, 512);
+                t.ok(pixels);
                 t.end();
             });
         });

platform/node/test/render.test.js

@@ -21,8 +21,8 @@ suite.run('native', {tests: tests}, function (style, options, callback) {
     });
 
     map.load(style);
-    map.render(options, function (err, result) {
+    map.render(options, function (err, pixels) {
         map.release();
-        callback(err, result && result.pixels);
+        callback(err, pixels);
     });
 });