text: const mongoose = require('mongoose');
  const userSchema = mongoose.Schema({
      firstname: { type: String, unique: true},
      lastname: { type: String, unique: true},
      username: { type: String, trim: true, unique: true},
      email: { type: String, unique: true},
      password: {type: String, unique: true},
      profile_picture: {
          type: String,
          default: 'https://res.cloudinary.com/dbkxx33pu/image/upload/v1546952277/plftlkghoh81emxob4jx.jpg'
      },
      resetPasswordToken: { type: String},
      resetPasswordExpires: { type: Date}
  });
  const User = mongoose.model('User', userSchema, 'users');
  module.exports = User;