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Define Mongoose models using TypeScript classes.

Basic usage

import { prop, getModelForClass } from '@typegoose/typegoose';
import * as mongoose from 'mongoose';

class User {
  public name?: string;

const UserModel = getModelForClass(User); // UserModel is a regular Mongoose Model with correct types

(async () => {
  await mongoose.connect('mongodb://localhost:27017/', { useNewUrlParser: true, useUnifiedTopology: true, dbName: "test" });

  const { _id: id } = await UserModel.create({ name: 'JohnDoe' } as User); // an "as" assertion, to have types for all properties
  const user = await UserModel.findById(id).exec();

  console.log(user); // prints { _id: 59218f686409d670a97e53e0, name: 'JohnDoe', __v: 0 }


A common problem when using Mongoose with TypeScript is that you have to define both the Mongoose model and the TypeScript interface. If the model changes, you also have to keep the TypeScript interface file in sync or the TypeScript interface would not represent the real data structure of the model.

Typegoose aims to solve this problem by defining only a TypeScript interface (class) which need to be enhanced with special Typegoose decorators.

Under the hood it uses the Reflect & reflect-metadata API to retrieve the types of the properties, so redundancy can be significantly reduced.

Instead of:

interface Car {
  model?: string;

interface Job {
  title?: string;
  position?: string;

interface User {
  name?: string;
  age: number;
  job?: Job;
  car: Car | string;

mongoose.model('User', {
  name: String,
  age: { type: Number, required: true },
  job: {
    title: String;
    position: String;
  car: { type: Schema.Types.ObjectId, ref: 'Car' }

mongoose.model('Car', {
  model: string,

You can just:

class Job {
  public title?: string;

  public position?: string;

class Car {
  public model?: string;

class User {
  public name?: string;

  @prop({ required: true })
  public age!: number;

  public job?: Job;

  @prop({ ref: Car })
  public car?: Ref<Car>;


  • TypeScript 3.2+
  • Node 8.10+
  • mongoose ^5.7.4
  • emitDecoratorMetadata and experimentalDecorators must be enabled in tsconfig.json


npm i -s @typegoose/typegoose

You also need to install mongoose, since version 5 it is listed as a peer-dependency

npm i -s mongoose


npm run test Run our tests after running npm i -D


Major.Minor.Fix (or how npm expresses it Major.Minor.Patch)
(This Project should comply with Semver)

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