text: format = function () {
      var string = arguments[0];
      var args = Array.from(arguments).slice(1);
      for (let i in args) {
          string = string.replace(/%[a-z]/, args[i]);
      }
      return string;
  };
  sliceArray = function (arr, size) {
      return arr.reduce((acc, _, i) => (i % size) ?
          acc : [...acc, arr.slice(i, i + size)], []);
  };
  
  module.exports = {
      format,
      sliceArray
  };