local-storage-fallback/lib/isSupported.js

Check and use appropriate storage adapter for browser (localStorage, sessionStorage, cookies, memory)

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = isSupported;
var _CookieStorage = require("./CookieStorage");
var TEST_KEY = "__test";
function hasStorage(name) {
  try {
    var storage = window[name];
    storage.setItem(TEST_KEY, "1");
    storage.removeItem(TEST_KEY);
    return true;
  } catch (e) {
    return false;
  }
}
function isSupported() {
  var name = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : "localStorage";
  var storage = String(name).replace(/storage$/i, "").toLowerCase();
  if (storage === "local") {
    return hasStorage("localStorage");
  }
  if (storage === "session") {
    return hasStorage("sessionStorage");
  }
  if (storage === "cookie") {
    return (0, _CookieStorage.hasCookies)();
  }
  if (storage === "memory") {
    return true;
  }
  throw new Error("Storage method `".concat(name, "` is not available.\n    Please use one of the following: localStorage, sessionStorage, cookieStorage, memoryStorage."));
}