text: const user = {
      username: { type: String, required: true, unique: true },
      password: { type: String, required: true },
  }
  
  const book = {
      title: { type: String },
      author: { type: String },
      genre: { type: String },
      yearPublished: { type: String },
      dateAdded: { type: Date, default: Date.now() },
  }
  
  module.exports = {
      book,
      user,
  }