Mongoose the Typescript way…?

Question

Trying to implement a Mongoose model in Typescript. Scouring the Google has revealed only a hybrid approach (combining JS and TS). How would one go about implementing the

Answer 1

With this vscode intellisense works on both

• User Type User.findOne
• user instance u1._id

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The Code:

// imports
import { ObjectID } from 'mongodb'
import { Document, model, Schema, SchemaDefinition } from 'mongoose'

import { authSchema, IAuthSchema } from './userAuth'

// the model

export interface IUser {
  _id: ObjectID, // !WARNING: No default value in Schema
  auth: IAuthSchema
}

// IUser will act like it is a Schema, it is more common to use this
// For example you can use this type at passport.serialize
export type IUserSchema = IUser & SchemaDefinition
// IUser will act like it is a Document
export type IUserDocument = IUser & Document

export const userSchema = new Schema<IUserSchema>({
  auth: {
    required: true,
    type: authSchema,
  }
})

export default model<IUserDocument>('user', userSchema)

Answer 2

Try ts-mongoose. It uses conditional types to do the mapping.

import { createSchema, Type, typedModel } from 'ts-mongoose';

const UserSchema = createSchema({
  username: Type.string(),
  email: Type.string(),
});

const User = typedModel('User', UserSchema);