I have two questions.
#1
I'm developing a Node.js/Mongodb web app.
This means that objects used in the code will be created by at least two
different code paths:
1. Constructor functions
2. Deserialization code in the mongo driver.
It is my understanding that hidden classes are not shared between different
constructors, even if I construct structurally identical objects with the
same properties and in the same order. This seems to imply that
deserialized objects coming from mongodb will not share the same hidden
class as structurally identical objects created by the constructors, hence
functions that use these objects will not be well optimized into native
code. Am I right?
#2
Is there any hidden class inheritance built into v8? That is, if I create
object o={a:1, b:2} and later add o.z=3, will native code optimized for the
hidden class before the property-add still work unmodified afterwards?
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