redux-persist/lib/storage/getStorage.js

persist and rehydrate redux stores

'use strict';

exports.__esModule = true;

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

exports.default = getStorage;


function noop() {}

var noopStorage = {
  getItem: noop,
  setItem: noop,
  removeItem: noop
};

function hasStorage(storageType) {
  if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !(storageType in window)) {
    return false;
  }

  try {
    var storage = window[storageType];
    var testKey = 'redux-persist ' + storageType + ' test';
    storage.setItem(testKey, 'test');
    storage.getItem(testKey);
    storage.removeItem(testKey);
  } catch (e) {
    if (process.env.NODE_ENV !== 'production') console.warn('redux-persist ' + storageType + ' test failed, persistence will be disabled.');
    return false;
  }
  return true;
}

function getStorage(type) {
  var storageType = type + 'Storage';
  if (hasStorage(storageType)) return window[storageType];else {
    if (process.env.NODE_ENV !== 'production') {
      console.error('redux-persist failed to create sync storage. falling back to memory storage.');
    }
    return noopStorage;
  }
}