diff --git a/patches/localforage+1.10.0.patch b/patches/localforage+1.10.0.patch
new file mode 100644
--- /dev/null
+++ b/patches/localforage+1.10.0.patch
@@ -0,0 +1,750 @@
+diff --git a/node_modules/localforage/dist/localforage.js b/node_modules/localforage/dist/localforage.js
+index 4e3295b..9049388 100644
+--- a/node_modules/localforage/dist/localforage.js
++++ b/node_modules/localforage/dist/localforage.js
+@@ -1125,6 +1125,172 @@ function removeItem(key, callback) {
+     return promise;
+ }
+ 
++function getMultipleItems(keys, synchronizationKey) {
++    var self = this;
++
++    var normalizedKeys = keys.map(normalizeKey);
++    var normalizedSynchronizationKey = normalizeKey(synchronizationKey);
++
++    var promise = new Promise$1(function (resolve, reject) {
++        self.ready().then(function () {
++            createTransaction(self._dbInfo, READ_WRITE, function (err, transaction) {
++                if (err) {
++                    return reject(err);
++                }
++
++                try {
++                    var store = transaction.objectStore(self._dbInfo.storeName);
++
++                    var allKeys = [].concat(normalizedKeys, [normalizedSynchronizationKey]);
++                    var result = {};
++                    var values = {};
++
++                    var placeRequest = function placeRequest(keysArray, index) {
++                        var key = keysArray[index];
++                        var req = store.get(key);
++
++                        req.onsuccess = function () {
++                            var value = req.result;
++                            if (value === undefined) {
++                                value = null;
++                            }
++
++                            if (_isEncodedBlob(value)) {
++                                value = _decodeBlob(value);
++                            }
++
++                            if (key === normalizedSynchronizationKey) {
++                                result['synchronizationValue'] = value;
++                            } else {
++                                values[key] = value;
++                            }
++
++                            if (index < keysArray.length - 1) {
++                                placeRequest(keysArray, index + 1);
++                                return;
++                            }
++
++                            result['values'] = values;
++                            resolve(result);
++                        };
++
++                        req.onerror = function () {
++                            reject(req.err);
++                        };
++                    };
++
++                    placeRequest(allKeys, 0);
++                } catch (e) {
++                    reject(e);
++                }
++            });
++        })["catch"](reject);
++    });
++
++    return promise;
++}
++
++function setMultipleItems(input, synchronizationKey, expectedSynchronizationValue, newSynchronizationValue, forceWrite) {
++    var self = this;
++    var normalizedSynchronizationKey = normalizeKey(synchronizationKey);
++
++    var promise = new Promise$1(function (resolve, reject) {
++        var dbInfo;
++        self.ready().then(function () {
++            dbInfo = self._dbInfo;
++            var inputArray = Object.entries(input);
++            return Promise$1.all(inputArray.map(function (_ref) {
++                var key = _ref[0],
++                    value = _ref[1];
++
++                var normalizedKey = normalizeKey(key);
++                if (value === null) {
++                    value = undefined;
++                }
++
++                if (!toString.call(value) === '[object Blob]') {
++                    return [normalizedKey, value];
++                }
++
++                return _checkBlobSupport(dbInfo.db).then(function (blobSupport) {
++                    if (blobSupport) {
++                        return [normalizedKey, value];
++                    }
++                    return [normalizedKey, _encodeBlob(value)];
++                });
++            }));
++        }).then(function (inputArray) {
++            createTransaction(self._dbInfo, READ_WRITE, function (err, transaction) {
++                if (err) {
++                    reject(err);
++                }
++
++                try {
++                    var store = transaction.objectStore(self._dbInfo.storeName);
++
++                    var req = store.get(normalizedSynchronizationKey);
++
++                    req.onsuccess = function () {
++                        var value = req.result;
++                        if (value === undefined) {
++                            value = null;
++                        }
++                        if (value !== expectedSynchronizationValue && !forceWrite) {
++                            reject('Another thread completed transaction');
++                            return;
++                        }
++
++                        for (var _iterator = inputArray, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
++                            var _ref2;
++
++                            if (_isArray) {
++                                if (_i >= _iterator.length) break;
++                                _ref2 = _iterator[_i++];
++                            } else {
++                                _i = _iterator.next();
++                                if (_i.done) break;
++                                _ref2 = _i.value;
++                            }
++
++                            var _ref3 = _ref2,
++                                key = _ref3[0],
++                                value = _ref3[1];
++
++                            var writeRequest = store.put(value, key);
++
++                            writeRequest.onerror = function () {
++                                reject(writeRequest.err);
++                            };
++                        }
++
++                        var synchronizationValueWriteRequest = store.put(newSynchronizationValue, normalizedSynchronizationKey);
++
++                        synchronizationValueWriteRequest.onerror = function () {
++                            reject(synchronizationValueWriteRequest.err);
++                        };
++                    };
++
++                    req.onerror = function () {
++                        reject(req.err);
++                    };
++
++                    transaction.oncomplete = function () {
++                        resolve();
++                    };
++
++                    transaction.onabort = transaction.onerror = function () {
++                        reject(transaction.error);
++                    };
++                } catch (e) {
++                    reject(e);
++                }
++            });
++        })["catch"](reject);
++    });
++
++    return promise;
++}
++
+ function clear(callback) {
+     var self = this;
+ 
+@@ -1437,6 +1603,8 @@ var asyncStorage = {
+     getItem: getItem,
+     setItem: setItem,
+     removeItem: removeItem,
++    getMultipleItems: getMultipleItems,
++    setMultipleItems: setMultipleItems,
+     clear: clear,
+     length: length,
+     key: key,
+@@ -2100,6 +2268,12 @@ var webSQLStorage = {
+     getItem: getItem$1,
+     setItem: setItem$1,
+     removeItem: removeItem$1,
++    getMultipleItems: function getMultipleItems() {
++        throw "Method unsupported for driver.";
++    },
++    setMultipleItems: function setMultipleItems() {
++        throw "Method unsupported for driver.";
++    },
+     clear: clear$1,
+     length: length$1,
+     key: key$1,
+@@ -2422,6 +2596,12 @@ var localStorageWrapper = {
+     getItem: getItem$2,
+     setItem: setItem$2,
+     removeItem: removeItem$2,
++    getMultipleItems: function getMultipleItems() {
++        throw "Method unsupported for driver.";
++    },
++    setMultipleItems: function setMultipleItems() {
++        throw "Method unsupported for driver.";
++    },
+     clear: clear$2,
+     length: length$2,
+     key: key$2,
+@@ -2466,7 +2646,7 @@ var DefaultDriverOrder = [DefaultDrivers.INDEXEDDB._driver, DefaultDrivers.WEBSQ
+ 
+ var OptionalDriverMethods = ['dropInstance'];
+ 
+-var LibraryMethods = ['clear', 'getItem', 'iterate', 'key', 'keys', 'length', 'removeItem', 'setItem'].concat(OptionalDriverMethods);
++var LibraryMethods = ['clear', 'getItem', 'iterate', 'key', 'keys', 'length', 'removeItem', 'setItem', 'setMultipleItems', 'getMultipleItems'].concat(OptionalDriverMethods);
+ 
+ var DefaultConfig = {
+     description: '',
+@@ -2621,8 +2801,8 @@ var LocalForage = function () {
+                         };
+                     };
+ 
+-                    for (var _i = 0, _len = OptionalDriverMethods.length; _i < _len; _i++) {
+-                        var optionalDriverMethod = OptionalDriverMethods[_i];
++                    for (var _i2 = 0, _len = OptionalDriverMethods.length; _i2 < _len; _i2++) {
++                        var optionalDriverMethod = OptionalDriverMethods[_i2];
+                         if (!driverObject[optionalDriverMethod]) {
+                             driverObject[optionalDriverMethod] = methodNotImplementedFactory(optionalDriverMethod);
+                         }
+diff --git a/node_modules/localforage/dist/localforage.min.js b/node_modules/localforage/dist/localforage.min.js
+index 7403f8f..195b535 100644
+--- a/node_modules/localforage/dist/localforage.min.js
++++ b/node_modules/localforage/dist/localforage.min.js
+@@ -4,4 +4,4 @@
+     https://localforage.github.io/localForage
+     (c) 2013-2017 Mozilla, Apache License 2.0
+ */
+-!function(a){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=a();else if("function"==typeof define&&define.amd)define([],a);else{var b;b="undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this,b.localforage=a()}}(function(){return function a(b,c,d){function e(g,h){if(!c[g]){if(!b[g]){var i="function"==typeof require&&require;if(!h&&i)return i(g,!0);if(f)return f(g,!0);var j=new Error("Cannot find module '"+g+"'");throw j.code="MODULE_NOT_FOUND",j}var k=c[g]={exports:{}};b[g][0].call(k.exports,function(a){var c=b[g][1][a];return e(c||a)},k,k.exports,a,b,c,d)}return c[g].exports}for(var f="function"==typeof require&&require,g=0;g<d.length;g++)e(d[g]);return e}({1:[function(a,b,c){(function(a){"use strict";function c(){k=!0;for(var a,b,c=l.length;c;){for(b=l,l=[],a=-1;++a<c;)b[a]();c=l.length}k=!1}function d(a){1!==l.push(a)||k||e()}var e,f=a.MutationObserver||a.WebKitMutationObserver;if(f){var g=0,h=new 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Float64Array(f);default:throw new Error("Unkown type: "+d)}}function T(a,b,c,d){a.executeSql("CREATE TABLE IF NOT EXISTS "+b.storeName+" (id INTEGER PRIMARY KEY, key unique, value)",[],c,d)}function U(a){var b=this,c={db:null};if(a)for(var d in a)c[d]="string"!=typeof a[d]?a[d].toString():a[d];var e=new xa(function(a,d){try{c.db=openDatabase(c.name,String(c.version),c.description,c.size)}catch(a){return d(a)}c.db.transaction(function(e){T(e,c,function(){b._dbInfo=c,a()},function(a,b){d(b)})},d)});return c.serializer=Xa,e}function V(a,b,c,d,e,f){a.executeSql(c,d,e,function(a,g){g.code===g.SYNTAX_ERR?a.executeSql("SELECT name FROM sqlite_master WHERE type='table' AND name = ?",[b.storeName],function(a,h){h.rows.length?f(a,g):T(a,b,function(){a.executeSql(c,d,e,f)},f)},f):f(a,g)},f)}function W(a,b){var c=this;a=j(a);var d=new xa(function(b,d){c.ready().then(function(){var e=c._dbInfo;e.db.transaction(function(c){V(c,e,"SELECT * FROM "+e.storeName+" WHERE key = ? 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d;d=a.name===c.name?e._dbInfo.db:openDatabase(a.name,"","",0),b(a.storeName?{db:d,storeNames:[a.storeName]}:da(d))}).then(function(a){return new xa(function(b,c){a.db.transaction(function(d){function e(a){return new xa(function(b,c){d.executeSql("DROP TABLE IF EXISTS "+a,[],function(){b()},function(a,b){c(b)})})}for(var f=[],g=0,h=a.storeNames.length;g<h;g++)f.push(e(a.storeNames[g]));xa.all(f).then(function(){b()}).catch(function(a){c(a)})},function(a){c(a)})})}):xa.reject("Invalid arguments"),h(d,b),d}function fa(){try{return"undefined"!=typeof localStorage&&"setItem"in localStorage&&!!localStorage.setItem}catch(a){return!1}}function ga(a,b){var c=a.name+"/";return a.storeName!==b.storeName&&(c+=a.storeName+"/"),c}function ha(){var a="_localforage_support_test";try{return localStorage.setItem(a,!0),localStorage.removeItem(a),!1}catch(a){return!0}}function ia(){return!ha()||localStorage.length>0}function ja(a){var b=this,c={};if(a)for(var d in a)c[d]=a[d];return c.keyPrefix=ga(a,b._defaultConfig),ia()?(b._dbInfo=c,c.serializer=Xa,xa.resolve()):xa.reject()}function ka(a){var b=this,c=b.ready().then(function(){for(var a=b._dbInfo.keyPrefix,c=localStorage.length-1;c>=0;c--){var d=localStorage.key(c);0===d.indexOf(a)&&localStorage.removeItem(d)}});return h(c,a),c}function la(a,b){var c=this;a=j(a);var d=c.ready().then(function(){var b=c._dbInfo,d=localStorage.getItem(b.keyPrefix+a);return d&&(d=b.serializer.deserialize(d)),d});return h(d,b),d}function ma(a,b){var c=this,d=c.ready().then(function(){for(var b=c._dbInfo,d=b.keyPrefix,e=d.length,f=localStorage.length,g=1,h=0;h<f;h++){var i=localStorage.key(h);if(0===i.indexOf(d)){var j=localStorage.getItem(i);if(j&&(j=b.serializer.deserialize(j)),void 0!==(j=a(j,i.substring(e),g++)))return j}}});return h(d,b),d}function na(a,b){var c=this,d=c.ready().then(function(){var b,d=c._dbInfo;try{b=localStorage.key(a)}catch(a){b=null}return b&&(b=b.substring(d.keyPrefix.length)),b});return h(d,b),d}function oa(a){var b=this,c=b.ready().then(function(){for(var a=b._dbInfo,c=localStorage.length,d=[],e=0;e<c;e++){var f=localStorage.key(e);0===f.indexOf(a.keyPrefix)&&d.push(f.substring(a.keyPrefix.length))}return d});return h(c,a),c}function pa(a){var b=this,c=b.keys().then(function(a){return a.length});return h(c,a),c}function qa(a,b){var c=this;a=j(a);var d=c.ready().then(function(){var b=c._dbInfo;localStorage.removeItem(b.keyPrefix+a)});return h(d,b),d}function ra(a,b,c){var d=this;a=j(a);var e=d.ready().then(function(){void 0===b&&(b=null);var c=b;return new xa(function(e,f){var g=d._dbInfo;g.serializer.serialize(b,function(b,d){if(d)f(d);else try{localStorage.setItem(g.keyPrefix+a,b),e(c)}catch(a){"QuotaExceededError"!==a.name&&"NS_ERROR_DOM_QUOTA_REACHED"!==a.name||f(a),f(a)}})})});return h(e,c),e}function sa(a,b){if(b=k.apply(this,arguments),a="function"!=typeof a&&a||{},!a.name){var c=this.config();a.name=a.name||c.name,a.storeName=a.storeName||c.storeName}var d,e=this;return d=a.name?new xa(function(b){b(a.storeName?ga(a,e._defaultConfig):a.name+"/")}).then(function(a){for(var b=localStorage.length-1;b>=0;b--){var c=localStorage.key(b);0===c.indexOf(a)&&localStorage.removeItem(c)}}):xa.reject("Invalid arguments"),h(d,b),d}function ta(a,b){a[b]=function(){var c=arguments;return a.ready().then(function(){return a[b].apply(a,c)})}}function ua(){for(var a=1;a<arguments.length;a++){var b=arguments[a];if(b)for(var c in b)b.hasOwnProperty(c)&&(ab(b[c])?arguments[0][c]=b[c].slice():arguments[0][c]=b[c])}return arguments[0]}var va="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(a){return typeof a}:function(a){return a&&"function"==typeof Symbol&&a.constructor===Symbol&&a!==Symbol.prototype?"symbol":typeof a},wa=e();"undefined"==typeof Promise&&a(3);var xa=Promise,ya="local-forage-detect-blob-support",za=void 0,Aa={},Ba=Object.prototype.toString,Ca="readonly",Da="readwrite",Ea={_driver:"asyncStorage",_initStorage:C,_support:f(),iterate:E,getItem:D,setItem:F,removeItem:G,getMultipleItems:H,setMultipleItems:I,clear:J,length:K,key:L,keys:M,dropInstance:N},Fa="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",Ga="~~local_forage_type~",Ha=/^~~local_forage_type~([^~]+)~/,Ia="__lfsc__:",Ja=Ia.length,Ka="arbf",La="blob",Ma="si08",Na="ui08",Oa="uic8",Pa="si16",Qa="si32",Ra="ur16",Sa="ui32",Ta="fl32",Ua="fl64",Va=Ja+Ka.length,Wa=Object.prototype.toString,Xa={serialize:R,deserialize:S,stringToBuffer:P,bufferToString:Q},Ya={_driver:"webSQLStorage",_initStorage:U,_support:O(),iterate:X,getItem:W,setItem:Z,removeItem:$,getMultipleItems:function(){throw"Method unsupported for driver."},setMultipleItems:function(){throw"Method unsupported for driver."},clear:_,length:aa,key:ba,keys:ca,dropInstance:ea},Za={_driver:"localStorageWrapper",_initStorage:ja,_support:fa(),iterate:ma,getItem:la,setItem:ra,removeItem:qa,getMultipleItems:function(){throw"Method unsupported for driver."},setMultipleItems:function(){throw"Method unsupported for driver."},clear:ka,length:pa,key:na,keys:oa,dropInstance:sa},$a=function(a,b){return a===b||"number"==typeof a&&"number"==typeof b&&isNaN(a)&&isNaN(b)},_a=function(a,b){for(var c=a.length,d=0;d<c;){if($a(a[d],b))return!0;d++}return!1},ab=Array.isArray||function(a){return"[object Array]"===Object.prototype.toString.call(a)},bb={},cb={},db={INDEXEDDB:Ea,WEBSQL:Ya,LOCALSTORAGE:Za},eb=[db.INDEXEDDB._driver,db.WEBSQL._driver,db.LOCALSTORAGE._driver],fb=["dropInstance"],gb=["clear","getItem","iterate","key","keys","length","removeItem","setItem","setMultipleItems","getMultipleItems"].concat(fb),hb={description:"",driver:eb.slice(),name:"localforage",size:4980736,storeName:"keyvaluepairs",version:1},ib=function(){function a(b){d(this,a);for(var c in db)if(db.hasOwnProperty(c)){var e=db[c],f=e._driver;this[c]=f,bb[f]||this.defineDriver(e)}this._defaultConfig=ua({},hb),this._config=ua({},this._defaultConfig,b),this._driverSet=null,this._initDriver=null,this._ready=!1,this._dbInfo=null,this._wrapLibraryMethodsWithReady(),this.setDriver(this._config.driver).catch(function(){})}return a.prototype.config=function(a){if("object"===(void 0===a?"undefined":va(a))){if(this._ready)return new Error("Can't call config() after localforage has been used.");for(var b in a){if("storeName"===b&&(a[b]=a[b].replace(/\W/g,"_")),"version"===b&&"number"!=typeof a[b])return new Error("Database version must be a number.");this._config[b]=a[b]}return!("driver"in a&&a.driver)||this.setDriver(this._config.driver)}return"string"==typeof a?this._config[a]:this._config},a.prototype.defineDriver=function(a,b,c){var d=new xa(function(b,c){try{var d=a._driver,e=new Error("Custom driver not compliant; see https://mozilla.github.io/localForage/#definedriver");if(!a._driver)return void c(e);for(var f=gb.concat("_initStorage"),g=0,i=f.length;g<i;g++){var j=f[g];if((!_a(fb,j)||a[j])&&"function"!=typeof a[j])return void c(e)}(function(){for(var b=function(a){return function(){var b=new Error("Method "+a+" is not implemented by the current driver"),c=xa.reject(b);return h(c,arguments[arguments.length-1]),c}},c=0,d=fb.length;c<d;c++){var e=fb[c];a[e]||(a[e]=b(e))}})();var k=function(c){bb[d]&&console.info("Redefining LocalForage driver: "+d),bb[d]=a,cb[d]=c,b()};"_support"in a?a._support&&"function"==typeof a._support?a._support().then(k,c):k(!!a._support):k(!0)}catch(a){c(a)}});return i(d,b,c),d},a.prototype.driver=function(){return this._driver||null},a.prototype.getDriver=function(a,b,c){var d=bb[a]?xa.resolve(bb[a]):xa.reject(new Error("Driver not found."));return i(d,b,c),d},a.prototype.getSerializer=function(a){var b=xa.resolve(Xa);return i(b,a),b},a.prototype.ready=function(a){var b=this,c=b._driverSet.then(function(){return null===b._ready&&(b._ready=b._initDriver()),b._ready});return i(c,a,a),c},a.prototype.setDriver=function(a,b,c){function d(){g._config.driver=g.driver()}function e(a){return g._extend(a),d(),g._ready=g._initStorage(g._config),g._ready}function f(a){return function(){function b(){for(;c<a.length;){var f=a[c];return c++,g._dbInfo=null,g._ready=null,g.getDriver(f).then(e).catch(b)}d();var h=new Error("No available storage method found.");return g._driverSet=xa.reject(h),g._driverSet}var c=0;return b()}}var g=this;ab(a)||(a=[a]);var h=this._getSupportedDrivers(a),j=null!==this._driverSet?this._driverSet.catch(function(){return xa.resolve()}):xa.resolve();return this._driverSet=j.then(function(){var a=h[0];return g._dbInfo=null,g._ready=null,g.getDriver(a).then(function(a){g._driver=a._driver,d(),g._wrapLibraryMethodsWithReady(),g._initDriver=f(h)})}).catch(function(){d();var a=new Error("No available storage method found.");return g._driverSet=xa.reject(a),g._driverSet}),i(this._driverSet,b,c),this._driverSet},a.prototype.supports=function(a){return!!cb[a]},a.prototype._extend=function(a){ua(this,a)},a.prototype._getSupportedDrivers=function(a){for(var b=[],c=0,d=a.length;c<d;c++){var e=a[c];this.supports(e)&&b.push(e)}return b},a.prototype._wrapLibraryMethodsWithReady=function(){for(var a=0,b=gb.length;a<b;a++)ta(this,gb[a])},a.prototype.createInstance=function(b){return new a(b)},a}(),jb=new ib;b.exports=jb},{3:3}]},{},[4])(4)});
+\ No newline at end of file
+diff --git a/node_modules/localforage/dist/localforage.nopromises.js b/node_modules/localforage/dist/localforage.nopromises.js
+index 860abbb..ef989ec 100644
+--- a/node_modules/localforage/dist/localforage.nopromises.js
++++ b/node_modules/localforage/dist/localforage.nopromises.js
+@@ -789,6 +789,172 @@ function removeItem(key, callback) {
+     return promise;
+ }
+ 
++function getMultipleItems(keys, synchronizationKey) {
++    var self = this;
++
++    var normalizedKeys = keys.map(normalizeKey);
++    var normalizedSynchronizationKey = normalizeKey(synchronizationKey);
++
++    var promise = new Promise$1(function (resolve, reject) {
++        self.ready().then(function () {
++            createTransaction(self._dbInfo, READ_WRITE, function (err, transaction) {
++                if (err) {
++                    return reject(err);
++                }
++
++                try {
++                    var store = transaction.objectStore(self._dbInfo.storeName);
++
++                    var allKeys = [].concat(normalizedKeys, [normalizedSynchronizationKey]);
++                    var result = {};
++                    var values = {};
++
++                    var placeRequest = function placeRequest(keysArray, index) {
++                        var key = keysArray[index];
++                        var req = store.get(key);
++
++                        req.onsuccess = function () {
++                            var value = req.result;
++                            if (value === undefined) {
++                                value = null;
++                            }
++
++                            if (_isEncodedBlob(value)) {
++                                value = _decodeBlob(value);
++                            }
++
++                            if (key === normalizedSynchronizationKey) {
++                                result['synchronizationValue'] = value;
++                            } else {
++                                values[key] = value;
++                            }
++
++                            if (index < keysArray.length - 1) {
++                                placeRequest(keysArray, index + 1);
++                                return;
++                            }
++
++                            result['values'] = values;
++                            resolve(result);
++                        };
++
++                        req.onerror = function () {
++                            reject(req.err);
++                        };
++                    };
++
++                    placeRequest(allKeys, 0);
++                } catch (e) {
++                    reject(e);
++                }
++            });
++        })["catch"](reject);
++    });
++
++    return promise;
++}
++
++function setMultipleItems(input, synchronizationKey, expectedSynchronizationValue, newSynchronizationValue, forceWrite) {
++    var self = this;
++    var normalizedSynchronizationKey = normalizeKey(synchronizationKey);
++
++    var promise = new Promise$1(function (resolve, reject) {
++        var dbInfo;
++        self.ready().then(function () {
++            dbInfo = self._dbInfo;
++            var inputArray = Object.entries(input);
++            return Promise$1.all(inputArray.map(function (_ref) {
++                var key = _ref[0],
++                    value = _ref[1];
++
++                var normalizedKey = normalizeKey(key);
++                if (value === null) {
++                    value = undefined;
++                }
++
++                if (!toString.call(value) === '[object Blob]') {
++                    return [normalizedKey, value];
++                }
++
++                return _checkBlobSupport(dbInfo.db).then(function (blobSupport) {
++                    if (blobSupport) {
++                        return [normalizedKey, value];
++                    }
++                    return [normalizedKey, _encodeBlob(value)];
++                });
++            }));
++        }).then(function (inputArray) {
++            createTransaction(self._dbInfo, READ_WRITE, function (err, transaction) {
++                if (err) {
++                    reject(err);
++                }
++
++                try {
++                    var store = transaction.objectStore(self._dbInfo.storeName);
++
++                    var req = store.get(normalizedSynchronizationKey);
++
++                    req.onsuccess = function () {
++                        var value = req.result;
++                        if (value === undefined) {
++                            value = null;
++                        }
++                        if (value !== expectedSynchronizationValue && !forceWrite) {
++                            reject('Another thread completed transaction');
++                            return;
++                        }
++
++                        for (var _iterator = inputArray, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
++                            var _ref2;
++
++                            if (_isArray) {
++                                if (_i >= _iterator.length) break;
++                                _ref2 = _iterator[_i++];
++                            } else {
++                                _i = _iterator.next();
++                                if (_i.done) break;
++                                _ref2 = _i.value;
++                            }
++
++                            var _ref3 = _ref2,
++                                key = _ref3[0],
++                                value = _ref3[1];
++
++                            var writeRequest = store.put(value, key);
++
++                            writeRequest.onerror = function () {
++                                reject(writeRequest.err);
++                            };
++                        }
++
++                        var synchronizationValueWriteRequest = store.put(newSynchronizationValue, normalizedSynchronizationKey);
++
++                        synchronizationValueWriteRequest.onerror = function () {
++                            reject(synchronizationValueWriteRequest.err);
++                        };
++                    };
++
++                    req.onerror = function () {
++                        reject(req.err);
++                    };
++
++                    transaction.oncomplete = function () {
++                        resolve();
++                    };
++
++                    transaction.onabort = transaction.onerror = function () {
++                        reject(transaction.error);
++                    };
++                } catch (e) {
++                    reject(e);
++                }
++            });
++        })["catch"](reject);
++    });
++
++    return promise;
++}
++
+ function clear(callback) {
+     var self = this;
+ 
+@@ -1101,6 +1267,8 @@ var asyncStorage = {
+     getItem: getItem,
+     setItem: setItem,
+     removeItem: removeItem,
++    getMultipleItems: getMultipleItems,
++    setMultipleItems: setMultipleItems,
+     clear: clear,
+     length: length,
+     key: key,
+@@ -1764,6 +1932,12 @@ var webSQLStorage = {
+     getItem: getItem$1,
+     setItem: setItem$1,
+     removeItem: removeItem$1,
++    getMultipleItems: function getMultipleItems() {
++        throw "Method unsupported for driver.";
++    },
++    setMultipleItems: function setMultipleItems() {
++        throw "Method unsupported for driver.";
++    },
+     clear: clear$1,
+     length: length$1,
+     key: key$1,
+@@ -2086,6 +2260,12 @@ var localStorageWrapper = {
+     getItem: getItem$2,
+     setItem: setItem$2,
+     removeItem: removeItem$2,
++    getMultipleItems: function getMultipleItems() {
++        throw "Method unsupported for driver.";
++    },
++    setMultipleItems: function setMultipleItems() {
++        throw "Method unsupported for driver.";
++    },
+     clear: clear$2,
+     length: length$2,
+     key: key$2,
+@@ -2130,7 +2310,7 @@ var DefaultDriverOrder = [DefaultDrivers.INDEXEDDB._driver, DefaultDrivers.WEBSQ
+ 
+ var OptionalDriverMethods = ['dropInstance'];
+ 
+-var LibraryMethods = ['clear', 'getItem', 'iterate', 'key', 'keys', 'length', 'removeItem', 'setItem'].concat(OptionalDriverMethods);
++var LibraryMethods = ['clear', 'getItem', 'iterate', 'key', 'keys', 'length', 'removeItem', 'setItem', 'setMultipleItems', 'getMultipleItems'].concat(OptionalDriverMethods);
+ 
+ var DefaultConfig = {
+     description: '',
+@@ -2285,8 +2465,8 @@ var LocalForage = function () {
+                         };
+                     };
+ 
+-                    for (var _i = 0, _len = OptionalDriverMethods.length; _i < _len; _i++) {
+-                        var optionalDriverMethod = OptionalDriverMethods[_i];
++                    for (var _i2 = 0, _len = OptionalDriverMethods.length; _i2 < _len; _i2++) {
++                        var optionalDriverMethod = OptionalDriverMethods[_i2];
+                         if (!driverObject[optionalDriverMethod]) {
+                             driverObject[optionalDriverMethod] = methodNotImplementedFactory(optionalDriverMethod);
+                         }
+diff --git a/node_modules/localforage/dist/localforage.nopromises.min.js b/node_modules/localforage/dist/localforage.nopromises.min.js
+index a4d5d02..f4ca5f0 100644
+--- a/node_modules/localforage/dist/localforage.nopromises.min.js
++++ b/node_modules/localforage/dist/localforage.nopromises.min.js
+@@ -4,4 +4,4 @@
+     https://localforage.github.io/localForage
+     (c) 2013-2017 Mozilla, Apache License 2.0
+ */
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driver."},clear:_,length:aa,key:ba,keys:ca,dropInstance:ea},Za={_driver:"localStorageWrapper",_initStorage:ja,_support:fa(),iterate:ma,getItem:la,setItem:ra,removeItem:qa,getMultipleItems:function(){throw"Method unsupported for driver."},setMultipleItems:function(){throw"Method unsupported for driver."},clear:ka,length:pa,key:na,keys:oa,dropInstance:sa},$a=function(a,b){return a===b||"number"==typeof a&&"number"==typeof b&&isNaN(a)&&isNaN(b)},_a=function(a,b){for(var c=a.length,d=0;d<c;){if($a(a[d],b))return!0;d++}return!1},ab=Array.isArray||function(a){return"[object Array]"===Object.prototype.toString.call(a)},bb={},cb={},db={INDEXEDDB:Ea,WEBSQL:Ya,LOCALSTORAGE:Za},eb=[db.INDEXEDDB._driver,db.WEBSQL._driver,db.LOCALSTORAGE._driver],fb=["dropInstance"],gb=["clear","getItem","iterate","key","keys","length","removeItem","setItem","setMultipleItems","getMultipleItems"].concat(fb),hb={description:"",driver:eb.slice(),name:"localforage",size:4980736,storeName:"keyvaluepairs",version:1},ib=function(){function a(b){d(this,a);for(var c in db)if(db.hasOwnProperty(c)){var e=db[c],f=e._driver;this[c]=f,bb[f]||this.defineDriver(e)}this._defaultConfig=ua({},hb),this._config=ua({},this._defaultConfig,b),this._driverSet=null,this._initDriver=null,this._ready=!1,this._dbInfo=null,this._wrapLibraryMethodsWithReady(),this.setDriver(this._config.driver).catch(function(){})}return a.prototype.config=function(a){if("object"===(void 0===a?"undefined":va(a))){if(this._ready)return new Error("Can't call config() after localforage has been used.");for(var b in a){if("storeName"===b&&(a[b]=a[b].replace(/\W/g,"_")),"version"===b&&"number"!=typeof a[b])return new Error("Database version must be a number.");this._config[b]=a[b]}return!("driver"in a&&a.driver)||this.setDriver(this._config.driver)}return"string"==typeof a?this._config[a]:this._config},a.prototype.defineDriver=function(a,b,c){var d=new xa(function(b,c){try{var d=a._driver,e=new Error("Custom driver not compliant; see https://mozilla.github.io/localForage/#definedriver");if(!a._driver)return void c(e);for(var f=gb.concat("_initStorage"),g=0,i=f.length;g<i;g++){var j=f[g];if((!_a(fb,j)||a[j])&&"function"!=typeof a[j])return void c(e)}(function(){for(var b=function(a){return function(){var b=new Error("Method "+a+" is not implemented by the current driver"),c=xa.reject(b);return h(c,arguments[arguments.length-1]),c}},c=0,d=fb.length;c<d;c++){var e=fb[c];a[e]||(a[e]=b(e))}})();var k=function(c){bb[d]&&console.info("Redefining LocalForage driver: "+d),bb[d]=a,cb[d]=c,b()};"_support"in a?a._support&&"function"==typeof a._support?a._support().then(k,c):k(!!a._support):k(!0)}catch(a){c(a)}});return i(d,b,c),d},a.prototype.driver=function(){return this._driver||null},a.prototype.getDriver=function(a,b,c){var d=bb[a]?xa.resolve(bb[a]):xa.reject(new Error("Driver not found."));return i(d,b,c),d},a.prototype.getSerializer=function(a){var b=xa.resolve(Xa);return i(b,a),b},a.prototype.ready=function(a){var b=this,c=b._driverSet.then(function(){return null===b._ready&&(b._ready=b._initDriver()),b._ready});return i(c,a,a),c},a.prototype.setDriver=function(a,b,c){function d(){g._config.driver=g.driver()}function e(a){return g._extend(a),d(),g._ready=g._initStorage(g._config),g._ready}function f(a){return function(){function b(){for(;c<a.length;){var f=a[c];return c++,g._dbInfo=null,g._ready=null,g.getDriver(f).then(e).catch(b)}d();var h=new Error("No available storage method found.");return g._driverSet=xa.reject(h),g._driverSet}var c=0;return b()}}var g=this;ab(a)||(a=[a]);var h=this._getSupportedDrivers(a),j=null!==this._driverSet?this._driverSet.catch(function(){return xa.resolve()}):xa.resolve();return this._driverSet=j.then(function(){var a=h[0];return g._dbInfo=null,g._ready=null,g.getDriver(a).then(function(a){g._driver=a._driver,d(),g._wrapLibraryMethodsWithReady(),g._initDriver=f(h)})}).catch(function(){d();var a=new Error("No available storage method found.");return g._driverSet=xa.reject(a),g._driverSet}),i(this._driverSet,b,c),this._driverSet},a.prototype.supports=function(a){return!!cb[a]},a.prototype._extend=function(a){ua(this,a)},a.prototype._getSupportedDrivers=function(a){for(var b=[],c=0,d=a.length;c<d;c++){var e=a[c];this.supports(e)&&b.push(e)}return b},a.prototype._wrapLibraryMethodsWithReady=function(){for(var a=0,b=gb.length;a<b;a++)ta(this,gb[a])},a.prototype.createInstance=function(b){return new a(b)},a}(),jb=new ib;b.exports=jb},{undefined:void 0}]},{},[1])(1)});
+\ No newline at end of file
+diff --git a/node_modules/localforage/src/drivers/indexeddb.js b/node_modules/localforage/src/drivers/indexeddb.js
+index bee7fcc..30e15ca 100644
+--- a/node_modules/localforage/src/drivers/indexeddb.js
++++ b/node_modules/localforage/src/drivers/indexeddb.js
+@@ -746,6 +746,190 @@ function removeItem(key, callback) {
+     return promise;
+ }
+ 
++function getMultipleItems(keys, synchronizationKey) {
++    var self = this;
++
++    var normalizedKeys = keys.map(normalizeKey);
++    var normalizedSynchronizationKey = normalizeKey(synchronizationKey);
++
++    var promise = new Promise(function(resolve, reject) {
++        self
++            .ready()
++            .then(function() {
++                createTransaction(self._dbInfo, READ_WRITE, function(
++                    err,
++                    transaction
++                ) {
++                    if (err) {
++                        return reject(err);
++                    }
++
++                    try {
++                        var store = transaction.objectStore(
++                            self._dbInfo.storeName
++                        );
++
++                        var allKeys = [
++                            ...normalizedKeys,
++                            normalizedSynchronizationKey
++                        ];
++                        var result = {};
++                        var values = {};
++
++                        var placeRequest = function(keysArray, index) {
++                            var key = keysArray[index];
++                            var req = store.get(key);
++
++                            req.onsuccess = function() {
++                                var value = req.result;
++                                if (value === undefined) {
++                                    value = null;
++                                }
++
++                                if (_isEncodedBlob(value)) {
++                                    value = _decodeBlob(value);
++                                }
++
++                                if (key === normalizedSynchronizationKey) {
++                                    result['synchronizationValue'] = value;
++                                } else {
++                                    values[key] = value;
++                                }
++
++                                if (index < keysArray.length - 1) {
++                                    placeRequest(keysArray, index + 1);
++                                    return;
++                                }
++
++                                result['values'] = values;
++                                resolve(result);
++                            };
++
++                            req.onerror = function() {
++                                reject(req.err);
++                            };
++                        };
++
++                        placeRequest(allKeys, 0);
++                    } catch (e) {
++                        reject(e);
++                    }
++                });
++            })
++            .catch(reject);
++    });
++
++    return promise;
++}
++
++function setMultipleItems(
++    input,
++    synchronizationKey,
++    expectedSynchronizationValue,
++    newSynchronizationValue,
++    forceWrite
++) {
++    var self = this;
++    var normalizedSynchronizationKey = normalizeKey(synchronizationKey);
++
++    var promise = new Promise(function(resolve, reject) {
++        var dbInfo;
++        self
++            .ready()
++            .then(function() {
++                dbInfo = self._dbInfo;
++                var inputArray = Object.entries(input);
++                return Promise.all(
++                    inputArray.map(function([key, value]) {
++                        var normalizedKey = normalizeKey(key);
++                        if (value === null) {
++                            value = undefined;
++                        }
++
++                        if (!toString.call(value) === '[object Blob]') {
++                            return [normalizedKey, value];
++                        }
++
++                        return _checkBlobSupport(dbInfo.db).then(function(
++                            blobSupport
++                        ) {
++                            if (blobSupport) {
++                                return [normalizedKey, value];
++                            }
++                            return [normalizedKey, _encodeBlob(value)];
++                        });
++                    })
++                );
++            })
++            .then(function(inputArray) {
++                createTransaction(self._dbInfo, READ_WRITE, function(
++                    err,
++                    transaction
++                ) {
++                    if (err) {
++                        reject(err);
++                    }
++
++                    try {
++                        var store = transaction.objectStore(
++                            self._dbInfo.storeName
++                        );
++
++                        var req = store.get(normalizedSynchronizationKey);
++
++                        req.onsuccess = function() {
++                            var value = req.result;
++                            if (value === undefined) {
++                                value = null;
++                            }
++                            if (
++                                value !== expectedSynchronizationValue &&
++                                !forceWrite
++                            ) {
++                                reject('Another thread completed transaction');
++                                return;
++                            }
++
++                            for (var [key, value] of inputArray) {
++                                var writeRequest = store.put(value, key);
++
++                                writeRequest.onerror = function() {
++                                    reject(writeRequest.err);
++                                };
++                            }
++
++                            var synchronizationValueWriteRequest = store.put(
++                                newSynchronizationValue,
++                                normalizedSynchronizationKey
++                            );
++
++                            synchronizationValueWriteRequest.onerror = function() {
++                                reject(synchronizationValueWriteRequest.err);
++                            };
++                        };
++
++                        req.onerror = function() {
++                            reject(req.err);
++                        };
++
++                        transaction.oncomplete = function() {
++                            resolve();
++                        };
++
++                        transaction.onabort = transaction.onerror = function() {
++                            reject(transaction.error);
++                        };
++                    } catch (e) {
++                        reject(e);
++                    }
++                });
++            })
++            .catch(reject);
++    });
++
++    return promise;
++}
++
+ function clear(callback) {
+     var self = this;
+ 
+@@ -1107,6 +1291,8 @@ var asyncStorage = {
+     getItem: getItem,
+     setItem: setItem,
+     removeItem: removeItem,
++    getMultipleItems: getMultipleItems,
++    setMultipleItems: setMultipleItems,
+     clear: clear,
+     length: length,
+     key: key,
+diff --git a/node_modules/localforage/src/drivers/localstorage.js b/node_modules/localforage/src/drivers/localstorage.js
+index 3d1cbba..d78e3eb 100644
+--- a/node_modules/localforage/src/drivers/localstorage.js
++++ b/node_modules/localforage/src/drivers/localstorage.js
+@@ -322,6 +322,8 @@ var localStorageWrapper = {
+     getItem: getItem,
+     setItem: setItem,
+     removeItem: removeItem,
++    getMultipleItems: () => { throw "Method unsupported for driver."; },
++    setMultipleItems: () => { throw "Method unsupported for driver."; },
+     clear: clear,
+     length: length,
+     key: key,
+diff --git a/node_modules/localforage/src/drivers/websql.js b/node_modules/localforage/src/drivers/websql.js
+index 257d819..4fa2410 100644
+--- a/node_modules/localforage/src/drivers/websql.js
++++ b/node_modules/localforage/src/drivers/websql.js
+@@ -600,6 +600,8 @@ var webSQLStorage = {
+     getItem: getItem,
+     setItem: setItem,
+     removeItem: removeItem,
++    getMultipleItems: () => { throw "Method unsupported for driver."; },
++    setMultipleItems: () => { throw "Method unsupported for driver."; },
+     clear: clear,
+     length: length,
+     key: key,
+diff --git a/node_modules/localforage/src/localforage.js b/node_modules/localforage/src/localforage.js
+index 8d3393d..847e5e5 100644
+--- a/node_modules/localforage/src/localforage.js
++++ b/node_modules/localforage/src/localforage.js
+@@ -36,7 +36,9 @@ const LibraryMethods = [
+     'keys',
+     'length',
+     'removeItem',
+-    'setItem'
++    'setItem',
++    'setMultipleItems',
++    'getMultipleItems'
+ ].concat(OptionalDriverMethods);
+ 
+ const DefaultConfig = {
+diff --git a/node_modules/localforage/typings/localforage.d.ts b/node_modules/localforage/typings/localforage.d.ts
+index 7fb8f58..850f6d6 100644
+--- a/node_modules/localforage/typings/localforage.d.ts
++++ b/node_modules/localforage/typings/localforage.d.ts
+@@ -17,8 +17,12 @@ interface LocalForageOptions extends LocalForageDbInstanceOptions {
+ interface LocalForageDbMethodsCore {
+     getItem<T>(key: string, callback?: (err: any, value: T | null) => void): Promise<T | null>;
+ 
++    getMultipleItems<T>(keys: ReadonlyArray<keyof T>, synchronizationKey: string): Promise<Readonly<{values: T, synchronizationValue?: string}>>;
++
+     setItem<T>(key: string, value: T, callback?: (err: any, value: T) => void): Promise<T>;
+ 
++    setMultipleItems(input: Readonly<{[key: string]: unknown}>, synchronizationKey: string, expectedSynchronizationValue: ?string, newSynchronizationValue: string, forceWrite: boolean): Promise<void>;
++
+     removeItem(key: string, callback?: (err: any) => void): Promise<void>;
+ 
+     clear(callback?: (err: any) => void): Promise<void>;
diff --git a/web/flow-typed/npm/localforage_v1.5.x.js b/web/flow-typed/npm/localforage_v1.5.x.js
--- a/web/flow-typed/npm/localforage_v1.5.x.js
+++ b/web/flow-typed/npm/localforage_v1.5.x.js
@@ -36,6 +36,17 @@
   keys(
     successCallback?: (keyNames: Array<string>) => mixed,
   ): ?Promise<Array<string>>,
+  getMultipleItems<T: {+[string]: ?mixed}>(
+    keys: $ReadOnlyArray<$Keys<T>>,
+    synchronizationKey: string
+  ): Promise<{+values: T, +synchronizationValue: ?string}>,
+  setMultipleItems(
+    input: {+[string]: mixed},
+    synchronizationKey: string, 
+    expectedSynchronizationValue: ?string,
+    newSynchronizationValue: string,
+    forceWrite: boolean
+  ): Promise<void>,
   ...
 };
 
@@ -65,6 +76,17 @@
   keys(
     successCallback?: (keyNames: Array<string>) => mixed,
   ): Promise<Array<string>>,
+  getMultipleItems<T: {+[string]: ?mixed}>(
+    keys: $ReadOnlyArray<$Keys<T>>,
+    synchronizationKey: string
+  ): Promise<{+values: T, +synchronizationValue: ?string}>,
+  setMultipleItems(
+    input: {+[string]: mixed},
+    synchronizationKey: string, 
+    expectedSynchronizationValue: ?string,
+    newSynchronizationValue: string,
+    forceWrite: boolean
+  ): Promise<void>,
   iterate<T>(
     iteratorCallback: (value: T, key: string, iterationNumber: number) => mixed,
     successCallback?: (result: void | [string, T]) => mixed,