Native Module with libuv and Promise

• v8::Persistent: Keep a v8 Object over scope
  • it require to release the Object manulally with Reset(void)
  • Use Object with convert Local to v8::Local<T>::New(isolate, persistent)
• v8::Promise is made from v8::Promise::Resolver object
  • Promise::Resolver::New(isolate) then resolver->GetPromise()
  • use ressolver->Resolve(obj) or resolver->Reject(obj) to pass promise
• v8::Isolate: requires to create v8 Object
  • hidden by Nan::New inside to use v8::Isolate::GetCurrent()
  • (for creating Isolate as barrier (e.f. for different tasks))
• Nan::HandleScope scope: It requires to create v8 Object in outside of NAN_METHOD function (e.g. in native callbacks)
• libuv pattern
  • make uv_xxx_t handle
  • set handle->data to objects use inside callback
  • call uv_xxx_init(uv_default_loop(), handle)
  • call uv_xxx_yyy(handle, callback, ...) function
  • in callback
    • retrieve objects from handle->data
    • uv_close(handle, dispose) to register deleting handle memory
    • do something as callback

Reference

For native module basics, see:

• https://gist.github.com/bellbind/cc915d252eeb77a3e03e

For APIs, see:

• http://docs.libuv.org/en/v1.x/timer.html
• http://v8.paulfryzel.com/docs/master/classv8_1_1_persistent_base.html
• http://v8.paulfryzel.com/docs/master/classv8_1_1_promise_1_1_resolver.html