Function parseUniqueHeadersOption

lib/_http_outgoing.js:660–672

(headers)

}));

function parseUniqueHeadersOption(headers) {
  if (!ArrayIsArray(headers)) {
    return null;
  }

  const unique = new SafeSet();
  const l = headers.length;
  for (let i = 0; i < l; i++) {
    unique.add(headers[i].toLowerCase());
  }

  return unique;
}

OutgoingMessage.prototype.setHeader = function setHeader(name, value) {
  if (this._header) {