V*:internal Error while cloning an axios object

[mlibre]

Axios produces a very large/complex object of the Request.

When I was trying clone this object, I got v8:internal errror.

[yury-kozlov]

Probably, you mean this error (coming from V8 engine): FATAL ERROR: v8::Object::SetInternalField() Internal field out of bounds
It happens when clone tries to access some native fields of httpResponse, like connection, socket, etc.
I would be glad to know how to prevent this error too, as it crashes the whole application.
Related:

• Clone breaking v8 somehow  #106
• Enable clone to be extended. #108
• Node 12 crashes at node::BaseObject::InternalFieldSet nodejs/node#32568

[doublemcz]

+1 I would say it is necessary to remove socket connections from the object. It happens with MongoDB connection as well.

[aliclark]

I've opened a related issue nodejs/node#37369

The bug is triggered on

clone/clone.js

Line 165 in 6df949a

child[i] = _clone(parent[i], depth - 1);

because of the assignment child[i] = , which attempts to set the 'onread' attribute of the node socket, crashing.

Although the crash is a bug in node, it still could be a bug the fact that it was triggered.

At

clone/clone.js

Line 121 in 6df949a

child = Object.create(proto);

and

clone/clone.js

Line 124 in 6df949a

child = Object.create(prototype);

a fresh object is created but using a reference to the original prototype. I think in this case the object was a magic Proxy-like object, where assignment of this specific property caused a crash, but in general I think this could crop up with other types of code where the prototype has setter or proxy behaviours.

[girishghoda]

@aliclark any fix or temporary hack of this?

[aliclark]

@aliclark any fix or temporary hack of this?

Hi @girishghoda, I believe you just need to remove reference to the node socket from the source object before you perform clone - attempting to clone an internal property of the socket is what causes a crash.

[mlibre]

New native feature:
https://developer.mozilla.org/en-US/docs/Web/API/structuredClone