rekwest/dist/redirects.cjs

The robust request library that humanity deserves 🌐

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.redirects = void 0;
var _nodeHttp = _interopRequireDefault(require("node:http2"));
var _nodeStream = require("node:stream");
var _constants = require("./constants.cjs");
var _errors = require("./errors.cjs");
var _index = _interopRequireDefault(require("./index.cjs"));
var _utils = require("./utils.cjs");
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
const {
  HTTP2_HEADER_LOCATION,
  HTTP2_METHOD_GET,
  HTTP2_METHOD_HEAD,
  HTTP2_METHOD_POST,
  HTTP_STATUS_FOUND,
  HTTP_STATUS_MOVED_PERMANENTLY,
  HTTP_STATUS_PERMANENT_REDIRECT,
  HTTP_STATUS_SEE_OTHER,
  HTTP_STATUS_TEMPORARY_REDIRECT
} = _nodeHttp.default.constants;
const redirects = (res, options) => {
  const {
    credentials,
    follow,
    redirect,
    url
  } = options;
  if (follow && /3\d{2}/.test(res.statusCode) && res.headers[HTTP2_HEADER_LOCATION]) {
    if (redirect === _constants.requestRedirect.error) {
      return res.emit('error', new _errors.RequestError(`Unexpected redirect, redirect mode is set to '${redirect}'.`));
    }
    if (redirect === _constants.requestRedirect.follow) {
      const location = new URL(res.headers[HTTP2_HEADER_LOCATION], url);
      if (!/^https?:/i.test(location.protocol)) {
        return res.emit('error', new _errors.RequestError('URL scheme must be "http" or "https".'));
      }
      if (!(0, _utils.sameOrigin)(location, url)) {
        if (credentials !== _constants.requestCredentials.include) {
          options.credentials = _constants.requestCredentials.omit;
        }
        options.h2 = false;
      }
      if ([HTTP_STATUS_PERMANENT_REDIRECT, HTTP_STATUS_TEMPORARY_REDIRECT].includes(res.statusCode) && (0, _utils.isPipeStream)(options.body) && !(0, _nodeStream.isReadable)(options.body)) {
        return res.emit('error', new _errors.RequestError(`Unable to ${redirect} redirect with streamable body.`));
      }
      if ([HTTP_STATUS_MOVED_PERMANENTLY, HTTP_STATUS_FOUND].includes(res.statusCode) && options.method === HTTP2_METHOD_POST || res.statusCode === HTTP_STATUS_SEE_OTHER && ![HTTP2_METHOD_GET, HTTP2_METHOD_HEAD].includes(options.method)) {
        options.body = null;
        options.method = HTTP2_METHOD_GET;
      }
      options.follow--;
      options.redirected = true;
      return (0, _index.default)(location, options);
    }
  }
};
exports.redirects = redirects;