mongoose\types\connection.d.ts has incorrect definition for model

[bradleysimard]

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Issue

I'm using mongoose 6.4.5, for reference.

When defining a model directly against the global mongoose reference, the type checking works perfectly fine. Here's an example lifted right out of your documentation:

const kittySchema = new mongoose.Schema({
        name: String
    });

const Kitten = mongoose.model('Kitten', kittySchema);
const fluffy = new Kitten({ name: 'fluffy' });
await fluffy.save();

If I look at the fluffy instance, I can properly see my schema:

I can also see the definition of the .save() method:

Now, when I'm trying to define a model against a specific connection (which to me, seems like a more likely situation people would be using this), the type checking does not work properly. Here's an example based on the first example:

const connection = await mongoose.createConnection(`mongodb://localhost:27017`).asPromise();
const doggySchema = new mongoose.Schema({
    name: String
});
const Doggy = connection.model('Doggy', doggySchema);
const barky = new Doggy({ name: 'barky' });
await barky.save();

If I look at my barky instance, my schema is not visible (type is "any"):

Which also means that the definition of the .save() method is also "any":

My current workaround is to take the type definition of model from node_modules\mongoose\types\index.d.ts and replace the definition of model in mongoose\types\connection.d.ts. This makes it work, but I'm sure it's not the proper way to do it.

[hasezoey]

The reason probably is that the model type for connection is still the old "plain" type, not the updated type from PR #11563