class Cashier {
  constructor(//string priceList, float startingMoney, float salesTax){
    //parse the csv priceList and store it as a nested json, where for each product key = sku, value =a json object of the products other properties
    //Store the other parameters in respective properties
    //Initialize a boolean inTransaction property to false.
    //Initialize a transactions object where the key is transaction id, and values
    //are a csv string of transacition details
  }

  function viewBalance() {
    //if the register is not currently involved in a transaction, return the amount of money currently in the register
  }

  function startTransaction(//object customer) {
     //set inTransaction to true
     //instantiate a new transaction with a unique id, and the customer passed in as a parameter
     //set the customer's 'currentTransaction' property to the transaction object
  }

  function scanItem(//string sku, object transaction) {
     //add the product corresponding to the sku to the transaction's 'products' array
     //incriment the transaction's 'total' propery by the product's price
  }

  function closeTransaction(//float cashTendered, object transaction) {
    //set inTransaction to false
    //determine the amount of change to give to the customer
    //add the transaction to the 'transactions' object
    //set the customer's 'currentTransaction' property to null
    //display to the customer a list of products purchased and their grand totas
  }

  funcation viewTransactions() {
   //iterate over the Cashier's 'transactions' object, displaying imformation for each transaction
  }

  funcation searchProducts() {
   //search the Cashier's 'transaction's object for specific products
  }


}

class Customer {
  constructor() {
    //initialize a currentTransaction property to null
  }

  function seeCurrentTotal() {
    //returns the 'total' property of the customer's 'currentTransaction' if there is one
  }

  function seeLastScannes() {
    //returns th last element of the 'products' array of the customer's 'currentTransaction' if there is one
  }

  function findChange(//float cashAmount) {
    //return how much change the customer will recieve if they pay cashAmount for their 'currentTransaction'
  }

}

class Transaction {
  constructor(//int id, object customer) {
    //set the transaction's id and customer properties to the passes in parameters
    //initialize a timestamp property to the current date/time
    //initialize an empty array 'products' to track the products in the transaction
    //initialize a 'total' property to 0 that tracks the cash amount of this transaction
  }
}