"use strict";var _createClass=function(){function e(e,n){for(var t=0;t<n.length;t++){var r=n[t];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}return function(n,t,r){return t&&e(n.prototype,t),r&&e(n,r),n}}();function _classCallCheck(e,n){if(!(e instanceof n))throw new TypeError("Cannot call a class as a function")}var idbKeyval=function(e){var n=function(){function e(){var n=arguments.length>0&&void 0!==arguments[0]?arguments[0]:"keyval-store",t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:"keyval";_classCallCheck(this,e),this.storeName=t,this._dbp=new Promise(function(e,r){var o=indexedDB.open(n,1);o.onerror=function(){return r(o.error)},o.onsuccess=function(){return e(o.result)},o.onupgradeneeded=function(){o.result.createObjectStore(t)}})}return _createClass(e,[{key:"_withIDBStore",value:function(e,n){var t=this;return this._dbp.then(function(r){return new Promise(function(o,i){var u=r.transaction(t.storeName,e);u.oncomplete=function(){return o()},u.onabort=u.onerror=function(){return i(u.error)},n(u.objectStore(t.storeName))})})}}]),e}(),t=void 0;function r(){return t||(t=new n),t}return e.Store=n,e.get=function(e){var n=void 0;return(arguments.length>1&&void 0!==arguments[1]?arguments[1]:r())._withIDBStore("readonly",function(t){n=t.get(e)}).then(function(){return n.result})},e.set=function(e,n){return(arguments.length>2&&void 0!==arguments[2]?arguments[2]:r())._withIDBStore("readwrite",function(t){t.put(n,e)})},e.del=function(e){return(arguments.length>1&&void 0!==arguments[1]?arguments[1]:r())._withIDBStore("readwrite",function(n){n.delete(e)})},e.clear=function(){return(arguments.length>0&&void 0!==arguments[0]?arguments[0]:r())._withIDBStore("readwrite",function(e){e.clear()})},e.keys=function(){var e=[];return(arguments.length>0&&void 0!==arguments[0]?arguments[0]:r())._withIDBStore("readonly",function(n){(n.openKeyCursor||n.openCursor).call(n).onsuccess=function(){this.result&&(e.push(this.result.key),this.result.continue())}}).then(function(){return e})},e}({});