var utils = __webpack_require__(4867);

// Headers whose duplicates are ignored by node
// c.f. https://nodejs.org/api/http.html#http_message_headers
var ignoreDuplicateOf = [
  'age', 'authorization', 'content-length', 'content-type', 'etag',
  'expires', 'from', 'host', 'if-modified-since', 'if-unmodified-since',
  'last-modified', 'location', 'max-forwards', 'proxy-authorization',
  'referer', 'retry-after', 'user-agent'
];

/**
 * Parse headers into an object
 *
 * ```
 * Date: Wed, 27 Aug 2014 08:58:49 GMT
 * Content-Type: application/json
 * Connection: keep-alive
 * Transfer-Encoding: chunked
 * ```
 *
 * @param {String} headers Headers needing to be parsed
 * @returns {Object} Headers parsed into an object
 */
module.exports = function parseHeaders(headers) {
  var parsed = {};
  var key;
  var val;
  var i;

  if (!headers) { return parsed; }

  utils.forEach(headers.split('\n'), function parser(line) {
    i = line.indexOf(':');
    key = utils.trim(line.substr(0, i)).toLowerCase();
    val = utils.trim(line.substr(i + 1));

    if (key) {
      if (parsed[key] && ignoreDuplicateOf.indexOf(key) >= 0) {
        return;
      }
      if (key === 'set-cookie') {
        parsed[key] = (parsed[key] ? parsed[key] : []).concat([val]);
      } else {
        parsed[key] = parsed[key] ? parsed[key] + ', ' + val : val;
      }
    }
  });

  return parsed;
};
//# sourceURL=[module]
//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiNDEwOS5qcyIsIm1hcHBpbmdzIjoiQUFBQTtBQUNBO0FBQ0E7QUFDQTtBQUNBO0FBQ0E7QUFDQTtBQUNBO0FBQ0E7QUFDQTtBQUNBO0FBQ0E7QUFDQTtBQUNBO0FBQ0E7QUFDQTtBQUNBO0FBQ0E7QUFDQTtBQUNBO0FBQ0E7QUFDQTtBQUNBO0FBQ0E7QUFDQTtBQUNBO0FBQ0E7QUFDQTtBQUNBO0FBQ0E7QUFDQTtBQUNBO0FBQ0E7QUFDQTtBQUNBO0FBQ0E7QUFDQTtBQUNBO0FBQ0E7QUFDQTtBQUNBO0FBQ0E7QUFDQTtBQUNBO0FBQ0E7QUFDQTtBQUNBO0FBQ0E7QUFDQTtBQUNBO0FBQ0E7QUFDQTtBQUNBIiwic291cmNlcyI6WyJ3ZWJwYWNrOi8vbWF0dHJ6LWN4LWxpYnJhcnkvLi9ub2RlX21vZHVsZXMvYXhpb3MvbGliL2hlbHBlcnMvcGFyc2VIZWFkZXJzLmpzP2MzNDUiXSwic291cmNlc0NvbnRlbnQiOlsiJ3VzZSBzdHJpY3QnO1xuXG52YXIgdXRpbHMgPSByZXF1aXJlKCcuLy4uL3V0aWxzJyk7XG5cbi8vIEhlYWRlcnMgd2hvc2UgZHVwbGljYXRlcyBhcmUgaWdub3JlZCBieSBub2RlXG4vLyBjLmYuIGh0dHBzOi8vbm9kZWpzLm9yZy9hcGkvaHR0cC5odG1sI2h0dHBfbWVzc2FnZV9oZWFkZXJzXG52YXIgaWdub3JlRHVwbGljYXRlT2YgPSBbXG4gICdhZ2UnLCAnYXV0aG9yaXphdGlvbicsICdjb250ZW50LWxlbmd0aCcsICdjb250ZW50LXR5cGUnLCAnZXRhZycsXG4gICdleHBpcmVzJywgJ2Zyb20nLCAnaG9zdCcsICdpZi1tb2RpZmllZC1zaW5jZScsICdpZi11bm1vZGlmaWVkLXNpbmNlJyxcbiAgJ2xhc3QtbW9kaWZpZWQnLCAnbG9jYXRpb24nLCAnbWF4LWZvcndhcmRzJywgJ3Byb3h5LWF1dGhvcml6YXRpb24nLFxuICAncmVmZXJlcicsICdyZXRyeS1hZnRlcicsICd1c2VyLWFnZW50J1xuXTtcblxuLyoqXG4gKiBQYXJzZSBoZWFkZXJzIGludG8gYW4gb2JqZWN0XG4gKlxuICogYGBgXG4gKiBEYXRlOiBXZWQsIDI3IEF1ZyAyMDE0IDA4OjU4OjQ5IEdNVFxuICogQ29udGVudC1UeXBlOiBhcHBsaWNhdGlvbi9qc29uXG4gKiBDb25uZWN0aW9uOiBrZWVwLWFsaXZlXG4gKiBUcmFuc2Zlci1FbmNvZGluZzogY2h1bmtlZFxuICogYGBgXG4gKlxuICogQHBhcmFtIHtTdHJpbmd9IGhlYWRlcnMgSGVhZGVycyBuZWVkaW5nIHRvIGJlIHBhcnNlZFxuICogQHJldHVybnMge09iamVjdH0gSGVhZGVycyBwYXJzZWQgaW50byBhbiBvYmplY3RcbiAqL1xubW9kdWxlLmV4cG9ydHMgPSBmdW5jdGlvbiBwYXJzZUhlYWRlcnMoaGVhZGVycykge1xuICB2YXIgcGFyc2VkID0ge307XG4gIHZhciBrZXk7XG4gIHZhciB2YWw7XG4gIHZhciBpO1xuXG4gIGlmICghaGVhZGVycykgeyByZXR1cm4gcGFyc2VkOyB9XG5cbiAgdXRpbHMuZm9yRWFjaChoZWFkZXJzLnNwbGl0KCdcXG4nKSwgZnVuY3Rpb24gcGFyc2VyKGxpbmUpIHtcbiAgICBpID0gbGluZS5pbmRleE9mKCc6Jyk7XG4gICAga2V5ID0gdXRpbHMudHJpbShsaW5lLnN1YnN0cigwLCBpKSkudG9Mb3dlckNhc2UoKTtcbiAgICB2YWwgPSB1dGlscy50cmltKGxpbmUuc3Vic3RyKGkgKyAxKSk7XG5cbiAgICBpZiAoa2V5KSB7XG4gICAgICBpZiAocGFyc2VkW2tleV0gJiYgaWdub3JlRHVwbGljYXRlT2YuaW5kZXhPZihrZXkpID49IDApIHtcbiAgICAgICAgcmV0dXJuO1xuICAgICAgfVxuICAgICAgaWYgKGtleSA9PT0gJ3NldC1jb29raWUnKSB7XG4gICAgICAgIHBhcnNlZFtrZXldID0gKHBhcnNlZFtrZXldID8gcGFyc2VkW2tleV0gOiBbXSkuY29uY2F0KFt2YWxdKTtcbiAgICAgIH0gZWxzZSB7XG4gICAgICAgIHBhcnNlZFtrZXldID0gcGFyc2VkW2tleV0gPyBwYXJzZWRba2V5XSArICcsICcgKyB2YWwgOiB2YWw7XG4gICAgICB9XG4gICAgfVxuICB9KTtcblxuICByZXR1cm4gcGFyc2VkO1xufTtcbiJdLCJuYW1lcyI6W10sInNvdXJjZVJvb3QiOiIifQ==
//# sourceURL=webpack-internal:///4109