text: 
  exports.min = function min (array) {
    if (!array || array.length == 0) {
      return 0;
  }
    return Math.min(...array);
  }
  
  exports.max = function max (array) {
    if (!array || array.length == 0) {
      return 0;
  }
    return Math.max(...array);
  }
  
  exports.avg = function avg (array) {
    if (!array || array.length == 0) {
      return 0;
  }
    let sum = 0;
    for (let i = 0; i < array.length; i++) {
      sum += array[i];
  }
    return sum / array.length;
  }
  