How to store persistent handles in V8?

Question

I want my class to hold a v8::Context and a v8::External as members. Therefore, I thought I had to use persistent handles.

class Sc         


        

Answer 1

By default, persistent handles use a non copyable trait. Explicitly passing the copyable trait as template argument makes them work like in prior versions.

Persistent<Value, CopyablePersistentTraits<Value>> persistent(isolate, value);