Hi.

I have big unordered_map in C++, like

std::unordered_map<uint32_t, MyObject>;

It contains more than *10 million* elements, and i need about *10 thousand* 
hits to map from js. What is the most productive way to pass it to JS? 

*1)* I can add each item to v8 variable:

v8::Local<v8::Object> map;
map.Set(context, key, value);

But how productive it will be? And what type of v8::Object i must use? (v8::
*Object* or v8::*Map*)?

*2)* I can use NamedProperty, but each access to map from js will call my 
c++ func. It's now slow?

And what kind of named properties should I must use in this variant? I see 
at least (*SetAccessor*, *SetNamedPropertyHandler*, *SetHandler* from v8::
*ObjectTemplate*) and (SetAccessor, SetAccessorProperty, 
SetNativeDataProperty from v8::*Object*)

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