Mongoose schema static `findOrCreate` method in ES6/7 async/await syntax

mongoose-findOrCreate.js

import mongoose from 'mongoose';

let schema = new mongoose.Schema({
  email: { type: String, required: true, unique: true },
  password: { type: String, required: true }
});

schema.statics.findOrCreate = async (conditions, opt_attr) => {
  let document = await User.findOne(conditions);

  return document || await new User({ ...conditions, ...opt_attr }).save();
}

const User = mongoose.model('User', schema);
export default User;