listAllItems()

function listAllItems(products) {
  
  if(products.length === 0){
      return `There are no items for sale.`;
  }
  if(products.length === 1){
      return `There is 1 item for sale: ${products[0].name}.`;
  }
  if(products.length === 2){
     return `There are ${products.length} items for sale: ${products[0].name} and ${products[1].name}.`;
  }
  let str = [];
  for(let i = 0; i < products.length; i++){
    str.push(products[i].name);
  } //end of loop
  return `There are ${products.length} items for sale: ${str.join(', ')}.`;
} // end of function

module.exports = {
  listAllItems,
};