import { Document, SchemaType } from 'mongoose';

declare module 'mongoose' {
  // export function model<T extends Document, U = any>(
  //   name: string,
  //   schema?: Schema,
  //   collection?: string,
  //   skipInit?: boolean
  // ): Model<T, U, {}>;

  // interface Model<T extends Document, U, QueryHelpers = {}>
  //   extends NodeJS.EventEmitter,
  //     ModelProperties {
  //   /**
  //    * Model constructor
  //    * Provides the interface to MongoDB collections as well as creates document instances.
  //    * @param doc values with which to create the document
  //    * @event error If listening to this event, it is emitted when a document
  //    *   was saved without passing a callback and an error occurred. If not
  //    *   listening, the event bubbles to the connection used to create this Model.
  //    * @event index Emitted after Model#ensureIndexes completes. If an error
  //    *   occurred it is passed with the event.
  //    * @event index-single-start Emitted when an individual index starts within
  //    *   Model#ensureIndexes. The fields and options being used to build the index
  //    *   are also passed with the event.
  //    * @event index-single-done Emitted when an individual index finishes within
  //    *   Model#ensureIndexes. If an error occurred it is passed with the event.
  //    *   The fields, options, and index name are also passed.
  //    */
  //   new <U = any>(doc?: U): T;
  // }
  export class nSchemaType extends SchemaType {
    discriminator<T extends MongooseDocument>(
      name: string,
      schema: Schema
    ): Model<T>;
  }
}