C/C++ Code is formatted using the clang-format extension for VSCode.
You can install it on OSX using brew install clang-format and use this extension to invoke it from VSCode.
If you have issues with errors reported by Intellisense for <node_version.h>, you will need to edit your c_cpp_properties.json to add your node-gyp headers to the includePath.
"includePath": [
"${workspaceFolder}/**",
"~/.node-gyp/<node version>/include/node"
],Where <node version> is the version of node you're compiling against.