test(index.d.ts): repro #9989

test/typescript/queries.ts

@@ -31,6 +31,7 @@ const Test = model<ITest, Model<ITest, QueryHelpers>>('Test', schema);
 Test.find().byName('test').orFail().exec().then(console.log);
 
 Test.count({ name: /Test/ }).exec().then((res: number) => console.log(res));
+Test.findOne({ 'docs.id': 42 }).exec().then(console.log);
 
 // ObjectId casting
 Test.find({ parent: new Types.ObjectId('0'.repeat(24)) });
@@ -74,4 +75,16 @@ query instanceof Query;
 
 // Chaining
 Test.findOne().where({ name: 'test' });
-Test.where().find({ name: 'test' });
+Test.where().find({ name: 'test' });
+
+// Super generic query
+function testGenericQuery(): void {
+  interface CommonInterface<T> extends Document {
+    something: string;
+    content: T;
+  }
+
+  async function findSomething<T>(model: Model<CommonInterface<T>>): Promise<CommonInterface<T>> {
+    return model.findOne({something: 'test'}).orFail().exec();
+  }
+}