react-relay-network-layer/es/middleware/url.js

Network Layer for React Relay and Express (Batch Queries, AuthToken, Logging, Retry)

function _objectWithoutProperties(source, excluded) { if (source == null) return {}; var target = _objectWithoutPropertiesLoose(source, excluded); var key, i; if (Object.getOwnPropertySymbols) { var sourceSymbolKeys = Object.getOwnPropertySymbols(source); for (i = 0; i < sourceSymbolKeys.length; i++) { key = sourceSymbolKeys[i]; if (excluded.indexOf(key) >= 0) continue; if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue; target[key] = source[key]; } } return target; }

function _objectWithoutPropertiesLoose(source, excluded) { if (source == null) return {}; var target = {}; var sourceKeys = Object.keys(source); var key, i; for (i = 0; i < sourceKeys.length; i++) { key = sourceKeys[i]; if (excluded.indexOf(key) >= 0) continue; target[key] = source[key]; } return target; }

/* eslint-disable no-param-reassign */
import { isFunction } from '../utils';
export default function urlMiddleware(opts) {
  const urlOrThunk = opts && opts.url || '/graphql';
  const fetchOpts = opts && opts.opts || null;
  return next => req => {
    if (fetchOpts) {
      const {
        headers
      } = fetchOpts,
            otherOpts = _objectWithoutProperties(fetchOpts, ["headers"]);

      Object.assign(req, otherOpts);

      if (headers) {
        Object.assign(req.headers, headers);
      }
    }

    if (req.relayReqType !== 'batch-query') {
      // $FlowFixMe
      req.url = isFunction(urlOrThunk) ? urlOrThunk(req) : urlOrThunk;
    }

    return next(req);
  };
}