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    10.1.0 • Public • Published


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    Node.js Tests npm

    Define Mongoose models using TypeScript classes


    Migration Guides:
    (Date format: dd-mm-yyyy)

    • 9 to 10 (released on 12-12-2022)
    • 8 to 9 (released on 22-09-2021)
    • 7 to 8 (released on 28-07-2021)
    • 6 to 7 (released on 01-04-2020)
    • 5 to 6 (released on 30-09-2019)

    Basic usage

    import { prop, getModelForClass } from '@typegoose/typegoose';
    import * as mongoose from 'mongoose';
    class User {
      public name?: string;
      @prop({ type: () => [String] })
      public jobs?: string[];
    const UserModel = getModelForClass(User); // UserModel is a regular Mongoose Model with correct types
    (async () => {
      await mongoose.connect('mongodb://localhost:27017/', { dbName: 'test' });
      const { _id: id } = await UserModel.create({ name: 'JohnDoe', jobs: ['Cleaner'] });
      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 needs to be enhanced with special Typegoose decorators (like @prop).

    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 writing this:

    // This is a representation of how typegoose's compile output would look like
    interface Car {
      model?: string;
    interface Job {
      title?: string;
      position?: string;
    interface User {
      name?: string;
      age!: number;
      preferences?: string[];
      mainJob?: Job;
      jobs?: Job[];
      mainCar?: Car | string;
      cars?: (Car | string)[];
    const JobSchema = new mongoose.Schema({
      title: String;
      position: String;
    const CarModel = mongoose.model('Car', {
      model: string,
    const UserModel = mongoose.model('User', {
      name: { type: String },
      age: { type: Number, required: true },
      preferences: [{ type: String }],
      mainJob: { type: JobSchema },
      jobs: [{ type: JobSchema }],
      mainCar: { type: Schema.Types.ObjectId, ref: 'Car' },
      cars: [{ type: Schema.Types.ObjectId, ref: 'Car' }],

    You can just write this:

    class Job {
      public title?: string;
      public position?: string;
    class Car {
      public model?: string;
    class User {
      public name?: string;
      @prop({ required: true })
      public age!: number; // This is a single Primitive
      @prop({ type: () => [String] })
      public preferences?: string[]; // This is a Primitive Array
      public mainJob?: Job; // This is a single SubDocument
      @prop({ type: () => Job })
      public jobs?: Job[]; // This is a SubDocument Array
      @prop({ ref: () => Car })
      public mainCar?: Ref<Car>; // This is a single Reference
      @prop({ ref: () => Car })
      public cars?: Ref<Car>[]; // This is a Reference Array

    Extra Examples

    Requirements & Install

    Typegoose's Quick Start Guide


    yarn install
    yarn run test


    This Project should comply with Semver. It uses the Major.Minor.Fix standard (or in NPM terms, Major.Minor.Patch).

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    Known Issues

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    Here is the FAQ


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