toObject is missing

[wasya243]

Hello! Here is the code sample. I cannot access toObject. How to fix it or what I'm doing wrong?

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

class Student {
  @prop({ required: true })
  firstName!: string;

  @prop({ required: true })
  lastName!: string;
}

class Teacher {
  @prop({required: true})
  firstName!: string;

  @prop({ required: true })
  lastName!: string;

  @prop({ type: () => [Student], default: [], _id: false })
  students?: Student[]
}

const TeacherModel = getModelForClass(Teacher, {
  schemaOptions: {
    collection: 'teachers',
    toJSON: { virtuals: true },
    toObject: { virtuals: true }
  }
});

async function main() {
  try {
    await mongoose.connect('mongodb://localhost:27017', {dbName: 'test-return-type'});

    const teacher = new TeacherModel({
      firstName: 'name',
      lastName: 'last',
      students: [
        {
          firstName: 'student 1 name',
          lastName: 'student 1 last',
        }
      ]
    });

    await teacher.save();

    // does not work, Error:  Property 'toObject' does not exist on type 'Student'.
    teacher.students?.forEach(st => {
      st.toObject();
    });

    // works
    teacher.toObject();

    process.exit(0);
  } catch (err) {
    console.log(err);
    process.exit(1);
  }
}

main();

[hasezoey]

toObject is a mongoose function, so you would need to wrap students?: Student[] like students?: ArraySubDocumentType<Student>[], see SubDocument types
note that this typing, like array types, requires the manual setting of the type option inside the @prop for the property

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