How do I create wrapper for a v8::Persistent to a c++ function

Question

I have a v8::Persistent<v8::Function> that I need to turn into a void(__cdecl*) function. I was suggested to use a wrapper, but I'm unsure of how to do this.

Answer 1

For example like this:

v8::Persistent<v8::Function> func = ...;
v8::Persistent<v8::Context> context = ...;
v8::Isolate* isolate = ...;

void cpp_func(...) {
  v8::Local<v8::Context> ctx = v8::Local<v8::Context>::New(isolate, context);
  // The "this" inside the JavaScript function:
  v8::Local<v8::Object> arg_this = ctx->Global();
  // Arguments to the JavaScript function, of type `v8::Local<v8::Value>[]`.
  int argc = 0;
  int argv = nullptr;
  func->Call(ctx, arg_this, argc, argv);
}

There are many many more examples in V8's test-api.cc.