test

test.js

/**
 * Transform a to another format
 * @param  {object} a - Sample data
 * @return {object} Returns transformed a
 */
 function transform(a) {
  var new_a = {};
  (function find_msg(item, str) {
    for (var key in item) {
      if (key === 'message') new_a[str] = item[key];
      else if (str === '') find_msg(item[key], key); 
      else if (str === 'items') find_msg(item[key], str + '[' + key + ']');
      else find_msg(item[key], str + '.' + key);
    }
  })(a, '');
  return new_a;
}