rekwest/dist/preflight.js

The robust request library that humanity deserves 🌐

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.preflight = void 0;
var _nodeHttp = _interopRequireDefault(require("node:http2"));
var _config = require("./config");
var _constants = require("./constants");
var _cookies = require("./cookies");
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
const {
  HTTP2_HEADER_ACCEPT_ENCODING,
  HTTP2_HEADER_AUTHORITY,
  HTTP2_HEADER_AUTHORIZATION,
  HTTP2_HEADER_COOKIE,
  HTTP2_HEADER_METHOD,
  HTTP2_HEADER_PATH,
  HTTP2_HEADER_SCHEME,
  HTTP2_METHOD_GET,
  HTTP2_METHOD_HEAD
} = _nodeHttp.default.constants;
const preflight = options => {
  const {
    cookies,
    credentials,
    h2,
    headers,
    method,
    url
  } = options;
  if (h2) {
    options.endStream = [HTTP2_METHOD_GET, HTTP2_METHOD_HEAD].includes(method);
  }
  if (cookies !== false && credentials !== _constants.requestCredentials.omit) {
    let cookie = _cookies.Cookies.jar.has(url.origin);
    if (cookies === Object(cookies) && [_constants.requestCredentials.include, _constants.requestCredentials.sameOrigin].includes(credentials)) {
      if (cookie) {
        cookie = new _cookies.Cookies(cookies, options);
        _cookies.Cookies.jar.get(url.origin).forEach((val, key) => {
          if (!cookie.has(key)) {
            cookie.set(key, val);
          }
        });
        _cookies.Cookies.jar.set(url.origin, cookie);
      } else {
        cookie = new _cookies.Cookies(cookies, options);
        _cookies.Cookies.jar.set(url.origin, cookie);
      }
    } else {
      cookie &&= _cookies.Cookies.jar.get(url.origin);
    }
    options.headers = {
      ...(cookie && {
        [HTTP2_HEADER_COOKIE]: cookie
      }),
      ...headers
    };
  }
  if (credentials === _constants.requestCredentials.omit) {
    options.cookies = false;
    for (const it of Object.keys(options.headers ?? {}).filter(val => new RegExp(`^(${HTTP2_HEADER_AUTHORIZATION}|${HTTP2_HEADER_COOKIE})$`, 'i').test(val))) {
      Reflect.deleteProperty(options.headers, it);
    }
    url.password = url.username = '';
  }
  options.headers = {
    ...Object.entries(options.headers ?? {}).reduce((acc, [key, val]) => {
      acc[key.toLowerCase()] = val;
      if (acc[HTTP2_HEADER_ACCEPT_ENCODING]?.match(/\bzstd\b/i) && !_config.isZstdSupported) {
        acc[HTTP2_HEADER_ACCEPT_ENCODING] = val.replace(/\s?zstd,?/gi, '').trim();
        if (!acc[HTTP2_HEADER_ACCEPT_ENCODING]) {
          Reflect.deleteProperty(acc, HTTP2_HEADER_ACCEPT_ENCODING);
        }
      }
      return acc;
    }, {}),
    ...(h2 && {
      [HTTP2_HEADER_AUTHORITY]: url.host,
      [HTTP2_HEADER_METHOD]: method,
      [HTTP2_HEADER_PATH]: `${url.pathname}${url.search}`,
      [HTTP2_HEADER_SCHEME]: url.protocol.replace(/\p{Punctuation}/gu, '')
    })
  };
  return options;
};
exports.preflight = preflight;