(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
  typeof define === 'function' && define.amd ? define(['exports'], factory) :
  (global = global || self, factory(global.ReactQueryCreateWebStoragePersistorExperimental = {}));
}(this, (function (exports) { 'use strict';

  function _extends() {
    _extends = Object.assign || function (target) {
      for (var i = 1; i < arguments.length; i++) {
        var source = arguments[i];

        for (var key in source) {
          if (Object.prototype.hasOwnProperty.call(source, key)) {
            target[key] = source[key];
          }
        }
      }

      return target;
    };

    return _extends.apply(this, arguments);
  }

  function noop() {
    return undefined;
  }

  function createWebStoragePersistor(_ref) {
    var storage = _ref.storage,
        _ref$key = _ref.key,
        key = _ref$key === void 0 ? "REACT_QUERY_OFFLINE_CACHE" : _ref$key,
        _ref$throttleTime = _ref.throttleTime,
        throttleTime = _ref$throttleTime === void 0 ? 1000 : _ref$throttleTime,
        _ref$serialize = _ref.serialize,
        serialize = _ref$serialize === void 0 ? JSON.stringify : _ref$serialize,
        _ref$deserialize = _ref.deserialize,
        deserialize = _ref$deserialize === void 0 ? JSON.parse : _ref$deserialize;

    //try to save data to storage
    function trySave(persistedClient) {
      try {
        storage.setItem(key, serialize(persistedClient));
      } catch (_unused) {
        return false;
      }

      return true;
    }

    if (typeof storage !== 'undefined') {
      return {
        persistClient: throttle(function (persistedClient) {
          if (trySave(persistedClient) !== true) {
            var mutations = [].concat(persistedClient.clientState.mutations);
            var queries = [].concat(persistedClient.clientState.queries);

            var _client = _extends({}, persistedClient, {
              clientState: {
                mutations: mutations,
                queries: queries
              }
            }); // sort queries by dataUpdatedAt (oldest first)


            var sortedQueries = [].concat(queries).sort(function (a, b) {
              return a.state.dataUpdatedAt - b.state.dataUpdatedAt;
            }); // clean old queries and try to save

            var _loop = function _loop() {
              var oldestData = sortedQueries.shift();
              _client.clientState.queries = queries.filter(function (q) {
                return q !== oldestData;
              });

              if (trySave(_client)) {
                return {
                  v: void 0
                }; // save success
              }
            };

            while (sortedQueries.length > 0) {
              var _ret = _loop();

              if (typeof _ret === "object") return _ret.v;
            } // clean mutations and try to save


            while (mutations.shift()) {
              if (trySave(_client)) {
                return; // save success
              }
            }
          }
        }, throttleTime),
        restoreClient: function restoreClient() {
          var cacheString = storage.getItem(key);

          if (!cacheString) {
            return;
          }

          return deserialize(cacheString);
        },
        removeClient: function removeClient() {
          storage.removeItem(key);
        }
      };
    }

    return {
      persistClient: noop,
      restoreClient: noop,
      removeClient: noop
    };
  }

  function throttle(func, wait) {
    if (wait === void 0) {
      wait = 100;
    }

    var timer = null;
    var params;
    return function () {
      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
        args[_key] = arguments[_key];
      }

      params = args;

      if (timer === null) {
        timer = setTimeout(function () {
          func.apply(void 0, params);
          timer = null;
        }, wait);
      }
    };
  }

  exports.createWebStoragePersistor = createWebStoragePersistor;

  Object.defineProperty(exports, '__esModule', { value: true });

})));
//# sourceMappingURL=createWebStoragePersistor-experimental.development.js.map