code: function format(str, ...args) {
    return args.reduce((msg, arg, i) => msg.replace(new RegExp(`\\{${i}\\}`, 'g'), jasmine.pp(arg)), str);
  }
docs: Format a str, replacing {NUMBER} with the n'th argument
  and uses jasmine.pp for formatting the arguments
  @param {...string} str message with {#} to be replaced by additional parameters
  @returns {string}