v8 LocalObject exports exports-Set demo

nstrate how to set a new property on the exports object in Node.js:

// Include the necessary headers
#include <node.h>

// Define the method to be exported
void DemoMethod(const v8::FunctionCallbackInfo<v8::Value>& args) {
  // Your method code goes here
}

// Define the method to initialize the module
void Init(v8::Local<v8::Object> exports) {
  // Set the new property
  exports->Set(
    v8::String::NewFromUtf8(v8::Isolate::GetCurrent(), "demo"),
    v8::FunctionTemplate::New(v8::Isolate::GetCurrent(), DemoMethod)->GetFunction()
  );
}

// Register the module with Node.js
NODE_MODULE(addon, Init)

In this example, we define a new method DemoMethod and then use the Set method to add it to the exports object. We pass in a new String instance with the property name and a FunctionTemplate instance with the method implementation. Finally, we register the module with Node.js using the NODE_MODULE macro