text: 'use strict';
  // fill in the blanks
  
  console.log('--- loading: list all numbers');
  
  function listAllNumbersHandler() {
    debugger;
    console.log('\n--- action: list all numbers ---');
    console.log('range:', typeof range, '\n', range);
  
    // perform core logic
    /* create a string listing all the numbers in the range
      ex: "1, 2, 3, 4, "
      ex: "1, 2, 3, 4, 5, 6, "
    */
    let numbersList = '';
    for (let i = 1; i <= range; i++) {
      numbersList += i + `, `;
    }
    console.log('numbersList:', typeof numbersList, '\n', numbersList);
  
    // alert result for the user
    alert(numbersList);
  }
  