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node.jsexpressmongoosepassport.jspassport-local

UserModel.findOne returns an object with members duplicated inside member: _doc

I'm using Node, Passport, LocalStrategy, Mongoose for one simple project, and have 2 questions...

  1. why the user element returned by UserModel.findOne(...) has the members I expect it has: { _id, local, facebook, google, twitter, createdAt, updatedAt }, but all these members are also (duplicated) inside its member: _doc?

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when I expand the _doc member, I get:

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  1. what's the type of the variable: user?

Could you clarify these 2 questions for me?

Thanks!

Solution

  • _doc is the raw js object.
    user is the mongoose Document, that inherits javascript Object.

    Mongoose provides a lot of different APIs, that are included in the Document object.

    While _doc will just have the APIs that a normal javascript object offers.