Error is thrown when base model's schema specifies options that are not reflected in discriminator model's schema

When using the new discriminator models, mongoose throws an error, if the base model’s schema specifies schema options that are not reflected in the discriminator model’s schema.

Here is a simple code snippet that shows the issue:

var BaseSchema = new mongoose.Schema({
    "name": String
}, {
    "versionKey": false
});

var DiscriminatorSchema = new mongoose.Schema({
    "something": String
});

var Base = mongoose.model("Base", BaseSchema);
var Discriminator = Base.discriminator("Discriminator", DiscriminatorSchema);

The following error is thrown:

Error: Discriminator options are not customizable (except toJSON & toObject)

I understand that you can’t set schema options on a schema used in a discriminator model, but it should not be an issue the other way around. I would expect the schema options of the base schema to be “inherited” by the discriminator schema.

[vkarpov15]

@ksloan this particular issue is fixed. If you’re experiencing a similar issue, please open up a new issue with a repro script.

[ksloan]

Was this never fixed? Seeing this in 4.10.6.