Mongoose _populate + post init bug - version 5.18

mongoose-maximum-call-stack.js

#!/usr/bin/env node
'use strict';

const mongoose = require('mongoose');

mongoose.connect('mongodb://localhost/test');

const { connection, Schema } = mongoose;

const UserSchema = new Schema({
    name: {
        type: String
    },
    _organization: {
        type: Schema.Types.ObjectId, ref: 'Organization'
    }
});

const OrganizationSchema = new Schema({
    _admin: { type: Schema.Types.ObjectId, ref: 'User' },
    meta: {
        enabledUsers: { type: Number }
    }
});

OrganizationSchema.post('init', function () {
    this.meta.enabledUsers = 0;
});

const UserModel = mongoose.model('User', UserSchema);
const OrganizationModel = mongoose.model('Organization', OrganizationSchema);

const user = new UserModel({ name: 'Igor' });
const org = new OrganizationModel({ _admin: user._id });

user._organization = org._id;


async function run() {
    await connection.dropDatabase();
    await user.save();
    await org.save();

    let crash = await UserModel.findById(user).populate('_organization');
    console.log(crash);

    return connection.close();
}

run();