Function responseHeadersArrayToDictionary

lib/internal/inspector/network_undici.js:39–65

(headers)

// Convert an undici response headers array to a plain object (Map<string, string>)
function responseHeadersArrayToDictionary(headers) {
  const dict = {};
  let charset;
  let mimeType;
  for (let idx = 0; idx < headers.length; idx += 2) {
    const key = `${headers[idx]}`;
    const lowerCasedKey = StringPrototypeToLowerCase(key);
    const value = `${headers[idx + 1]}`;
    const prevValue = dict[key];

    if (lowerCasedKey === 'content-type') {
      const result = sniffMimeType(value);
      charset = result.charset;
      mimeType = result.mimeType;
    }

    if (typeof prevValue === 'string') {
      // ChromeDevTools frontend treats 'set-cookie' as a special case
      // https://github.com/ChromeDevTools/devtools-frontend/blob/4275917f84266ef40613db3c1784a25f902ea74e/front_end/core/sdk/NetworkRequest.ts#L1368
      if (lowerCasedKey === 'set-cookie') dict[key] = `${prevValue}\n${value}`;
      else dict[key] = `${prevValue}, ${value}`;
    } else {
      dict[key] = value;
    }
  }
  return [dict, charset, mimeType];
};

/**
 * When a client request starts, emit Network.requestWillBeSent event.