Fixes

package.json

@@ -65,7 +65,7 @@
     "lodash.mergewith": "^4.6.0",
     "meow": "^3.7.0",
     "mkdirp": "^0.5.1",
-    "nan": "2.9.2",
+    "nan": "^2.10.0",
     "node-gyp": "^3.3.1",
     "npmlog": "^4.0.0",
     "request": "~2.79.0",

src/binding.cpp

@@ -229,6 +229,7 @@ int GetResult(sass_context_wrapper* ctx_w, Sass_Context* ctx, bool is_sync = fal
 
 void MakeCallback(uv_work_t* req) {
   Nan::HandleScope scope;
+  Nan::AsyncResource async("sass:MakeCallback");
 
   Nan::TryCatch try_catch;
   sass_context_wrapper* ctx_w = static_cast<sass_context_wrapper*>(req->data);
@@ -245,15 +246,15 @@ void MakeCallback(uv_work_t* req) {
 
   if (status == 0 && ctx_w->success_callback) {
     // if no error, do callback(null, result)
-    ctx_w->success_callback->Call(0, 0);
+    ctx_w->success_callback->Call(0, 0, &async);
   }
   else if (ctx_w->error_callback) {
     // if error, do callback(error)
     const char* err = sass_context_get_error_json(ctx);
     v8::Local<v8::Value> argv[] = {
       Nan::New<v8::String>(err).ToLocalChecked()
     };
-    ctx_w->error_callback->Call(1, argv);
+    ctx_w->error_callback->Call(1, argv, &async);
   }
   if (try_catch.HasCaught()) {
     Nan::FatalException(try_catch);

src/callback_bridge.h

@@ -107,7 +107,7 @@ T CallbackBridge<T, L>::operator()(std::vector<void*> argv) {
     argv_v8.push_back(Nan::New(wrapper));
 
     return this->post_process_return_value(
-      this->callback->Call(argv_v8.size(), &argv_v8[0])
+      Nan::Call(*callback, argv_v8.size(), &argv_v8[0]).ToLocalChecked()
     );
   } else {
     /*
@@ -151,6 +151,7 @@ void CallbackBridge<T, L>::dispatched_async_uv_callback(uv_async_t *req) {
    * post_process_args().
    */
   Nan::HandleScope scope;
+  Nan::AsyncResource async("sass:CallbackBridge");
   Nan::TryCatch try_catch;
 
   std::vector<v8::Local<v8::Value>> argv_v8 = bridge->pre_process_args(bridge->argv);
@@ -159,7 +160,7 @@ void CallbackBridge<T, L>::dispatched_async_uv_callback(uv_async_t *req) {
   }
   argv_v8.push_back(Nan::New(bridge->wrapper));
 
-  bridge->callback->Call(argv_v8.size(), &argv_v8[0]);
+  bridge->callback->Call(argv_v8.size(), &argv_v8[0], &async);
 
   if (try_catch.HasCaught()) {
     Nan::FatalException(try_catch);

src/sass_types/color.cpp

@@ -28,7 +28,7 @@ namespace SassTypes
       }
 
       a = Nan::To<double>(raw_val[3]).FromJust();
-      // fall through vvv
+      NODE_SASS_FALLTHROUGH;
 
     case 3:
       if (!raw_val[0]->IsNumber() || !raw_val[1]->IsNumber() || !raw_val[2]->IsNumber()) {

src/sass_types/color.h

@@ -4,6 +4,12 @@
 #include <nan.h>
 #include "sass_value_wrapper.h"
 
+#if defined(__GNUC__) && __GNUC__ >= 7
+#define NODE_SASS_FALLTHROUGH __attribute__ ((fallthrough))
+#else
+#define NODE_SASS_FALLTHROUGH
+#endif
+
 namespace SassTypes
 {
   class Color : public SassValueWrapper<Color> {