use c++17 standard

Author: BewareMyPower

binding.gyp

@@ -21,9 +21,9 @@
   "targets": [
     {
       "target_name": "pulsar",
-      "cflags_cc": ["-std=gnu++11", "-fvisibility=hidden"],
+      "cflags_cc": ["-std=gnu++17", "-fvisibility=hidden"],
       "cflags!": ["-fno-exceptions"],
-      "cflags_cc!": ["-fno-exceptions", "-std=gnu++14", "-std=gnu++17"],
+      "cflags_cc!": ["-fno-exceptions"],
       "include_dirs": [
         "<!@(node -p \"require('node-addon-api').include\")",
       ],
@@ -49,7 +49,7 @@
             'GCC_ENABLE_CPP_EXCEPTIONS': 'YES',
             'GCC_ENABLE_CPP_RTTI': 'YES',
             'MACOSX_DEPLOYMENT_TARGET': '11.0',
-            'CLANG_CXX_LANGUAGE_STANDARD': 'gnu++11',
+            'CLANG_CXX_LANGUAGE_STANDARD': 'gnu++17',
             'OTHER_CFLAGS': [
                 "-fPIC",
             ]