text: // this is just a dummy..
  const messages = {
    1: [
      {
        message: 'hello'
      },
      {
        message: 'world'
      }
    ],
  
    2: [
      {
        message: 'damn son'
      }
    ]
  }
  
  /**
   * We're using a factory function this time.
   */
  module.exports = function makeMessageRepository({ DB_CONNECTION_STRING }) {
    // Imagine using the connection string for something useful..
    console.log(
      'Message repository constructed with connection string',
      DB_CONNECTION_STRING
    )
  
    function findMessagesForUser(userId) {
      return Promise.resolve(messages[userId])
    }
  
    return {
      findMessagesForUser
    }
  }
  