[Solved] Typescript typegoose getModelForClass return type

Simon Verhoeven Asks: Typescript typegoose getModelForClass return type
Using typegoose/mongoose I can get the Model for a Class like this (where Clip is some class that will be saved to db)

import { getModelForClass } from '@typegoose/typegoose';

const ClipModel = getModelForClass(Clip);

And this Model is constructible, by this I mean I can do this;

const clip = new ClipModel()
const clip = new ClipModel({someProp: "someValue"})


  1. How is this possible. If I look at the return type of getModelForClass here it is ReturnModelType<U, QueryHelpers> so how can a type have a constructor? Is this not the same as doing;

const clip = new ReturnModelType<Clip, QueryHelpers>(); // Ts error: 'ReturnModelType' only refers to a type, but is being used as a value here.

  1. IF ClipModel can be constructed does this mean that ClipModel is a class? If it is it should be possible to do this right?

class MyCustomModel extends ClipModel {
 // Add some customisations 

However, this give a ts error Base constructors must all have the same return type.

  1. Is it possible to extend ClipModel to have some custom functions on it so it can be called like;

ClipModel.find({}) // the default created find method 
ClipModel.myCustomFind({}) // find method with custom stuff


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