text: 'use strict';
  
  var initOptions = require('./lib/initOptions');
  var character = require('./character');
  /**
   * Return a random letter value.
   *
   * @param {Object} options - Possible options for letter
   * @returns {Character} - A random character value
   *
   * @example
   *      letter(({ casing: 'lower' })); // => c
   */
  module.exports = function (options) {
      var letterOptions = initOptions(options, { casing: 'lower' });
      var pool = 'abcdefghijklmnopqrstuvwxyz';
      var letterFromPool = character({ pool: pool });
      if (letterOptions.casing === 'upper') {
          letterFromPool = letterFromPool.toUpperCase();
      }
      return letterFromPool;
  };
  