Init. Map does not function and only working on backend at the moment.

node_modules/sleep/binding.gyp

@@ -0,0 +1,15 @@
+{
+  'targets': [
+    {
+      'target_name': 'node_sleep',
+      'sources': [
+        'module_init.cc',
+        'sleep.h',
+        'sleep_cpp11.cc', # All implementation files should be enabled in all OS/archtectures,
+        'sleep_posix.cc', # appropriate implementation is selected by preprocessor macros,
+        'sleep_win.cc',
+      ],
+      "include_dirs": ["<!(node -e \"require('nan')\")"]
+    }
+  ]
+}