removed lib

1 files changed, 0 insertions, 1977 deletions

diff --git a/www/lib/localforage/dist/localforage.nopromises.js b/www/lib/localforage/dist/localforage.nopromises.js
deleted file mode 100644
index 1a2042c7..00000000
--- a/www/lib/localforage/dist/localforage.nopromises.js
+++ /dev/null
@@ -1,1977 +0,0 @@
-/*!
-    localForage -- Offline Storage, Improved
-    Version 1.5.0
-    https://localforage.github.io/localForage
-    (c) 2013-2017 Mozilla, Apache License 2.0
-*/
-(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.localforage = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw (f.code="MODULE_NOT_FOUND", f)}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){
-'use strict';
-
-var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj; };
-
-function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
-
-function getIDB() {
-    /* global indexedDB,webkitIndexedDB,mozIndexedDB,OIndexedDB,msIndexedDB */
-    try {
-        if (typeof indexedDB !== 'undefined') {
-            return indexedDB;
-        }
-        if (typeof webkitIndexedDB !== 'undefined') {
-            return webkitIndexedDB;
-        }
-        if (typeof mozIndexedDB !== 'undefined') {
-            return mozIndexedDB;
-        }
-        if (typeof OIndexedDB !== 'undefined') {
-            return OIndexedDB;
-        }
-        if (typeof msIndexedDB !== 'undefined') {
-            return msIndexedDB;
-        }
-    } catch (e) {}
-}
-
-var idb = getIDB();
-
-function isIndexedDBValid() {
-    try {
-        // Initialize IndexedDB; fall back to vendor-prefixed versions
-        // if needed.
-        if (!idb) {
-            return false;
-        }
-        // We mimic PouchDB here;
-        //
-        // We test for openDatabase because IE Mobile identifies itself
-        // as Safari. Oh the lulz...
-        var isSafari = typeof openDatabase !== 'undefined' && /(Safari|iPhone|iPad|iPod)/.test(navigator.userAgent) && !/Chrome/.test(navigator.userAgent) && !/BlackBerry/.test(navigator.platform);
-
-        var hasFetch = typeof fetch === 'function' && fetch.toString().indexOf('[native code') !== -1;
-
-        // Safari <10.1 does not meet our requirements for IDB support (#5572)
-        // since Safari 10.1 shipped with fetch, we can use that to detect it
-        return (!isSafari || hasFetch) && typeof indexedDB !== 'undefined' &&
-        // some outdated implementations of IDB that appear on Samsung
-        // and HTC Android devices <4.4 are missing IDBKeyRange
-        typeof IDBKeyRange !== 'undefined';
-    } catch (e) {
-        return false;
-    }
-}
-
-function isWebSQLValid() {
-    return typeof openDatabase === 'function';
-}
-
-function isLocalStorageValid() {
-    try {
-        return typeof localStorage !== 'undefined' && 'setItem' in localStorage && localStorage.setItem;
-    } catch (e) {
-        return false;
-    }
-}
-
-// Abstracts constructing a Blob object, so it also works in older
-// browsers that don't support the native Blob constructor. (i.e.
-// old QtWebKit versions, at least).
-// Abstracts constructing a Blob object, so it also works in older
-// browsers that don't support the native Blob constructor. (i.e.
-// old QtWebKit versions, at least).
-function createBlob(parts, properties) {
-    /* global BlobBuilder,MSBlobBuilder,MozBlobBuilder,WebKitBlobBuilder */
-    parts = parts || [];
-    properties = properties || {};
-    try {
-        return new Blob(parts, properties);
-    } catch (e) {
-        if (e.name !== 'TypeError') {
-            throw e;
-        }
-        var Builder = typeof BlobBuilder !== 'undefined' ? BlobBuilder : typeof MSBlobBuilder !== 'undefined' ? MSBlobBuilder : typeof MozBlobBuilder !== 'undefined' ? MozBlobBuilder : WebKitBlobBuilder;
-        var builder = new Builder();
-        for (var i = 0; i < parts.length; i += 1) {
-            builder.append(parts[i]);
-        }
-        return builder.getBlob(properties.type);
-    }
-}
-
-// This is CommonJS because lie is an external dependency, so Rollup
-// can just ignore it.
-if (typeof Promise === 'undefined') {
-    // In the "nopromises" build this will just throw if you don't have
-    // a global promise object, but it would throw anyway later.
-    _dereq_('lie/polyfill');
-}
-var Promise$1 = Promise;
-
-function executeCallback(promise, callback) {
-    if (callback) {
-        promise.then(function (result) {
-            callback(null, result);
-        }, function (error) {
-            callback(error);
-        });
-    }
-}
-
-function executeTwoCallbacks(promise, callback, errorCallback) {
-    if (typeof callback === 'function') {
-        promise.then(callback);
-    }
-
-    if (typeof errorCallback === 'function') {
-        promise["catch"](errorCallback);
-    }
-}
-
-// Some code originally from async_storage.js in
-// [Gaia](https://github.com/mozilla-b2g/gaia).
-
-var DETECT_BLOB_SUPPORT_STORE = 'local-forage-detect-blob-support';
-var supportsBlobs;
-var dbContexts;
-var toString = Object.prototype.toString;
-
-// Transform a binary string to an array buffer, because otherwise
-// weird stuff happens when you try to work with the binary string directly.
-// It is known.
-// From http://stackoverflow.com/questions/14967647/ (continues on next line)
-// encode-decode-image-with-base64-breaks-image (2013-04-21)
-function _binStringToArrayBuffer(bin) {
-    var length = bin.length;
-    var buf = new ArrayBuffer(length);
-    var arr = new Uint8Array(buf);
-    for (var i = 0; i < length; i++) {
-        arr[i] = bin.charCodeAt(i);
-    }
-    return buf;
-}
-
-//
-// Blobs are not supported in all versions of IndexedDB, notably
-// Chrome <37 and Android <5. In those versions, storing a blob will throw.
-//
-// Various other blob bugs exist in Chrome v37-42 (inclusive).
-// Detecting them is expensive and confusing to users, and Chrome 37-42
-// is at very low usage worldwide, so we do a hacky userAgent check instead.
-//
-// content-type bug: https://code.google.com/p/chromium/issues/detail?id=408120
-// 404 bug: https://code.google.com/p/chromium/issues/detail?id=447916
-// FileReader bug: https://code.google.com/p/chromium/issues/detail?id=447836
-//
-// Code borrowed from PouchDB. See:
-// https://github.com/pouchdb/pouchdb/blob/master/packages/node_modules/pouchdb-adapter-idb/src/blobSupport.js
-//
-function _checkBlobSupportWithoutCaching(idb) {
-    return new Promise$1(function (resolve) {
-        var txn = idb.transaction(DETECT_BLOB_SUPPORT_STORE, 'readwrite');
-        var blob = createBlob(['']);
-        txn.objectStore(DETECT_BLOB_SUPPORT_STORE).put(blob, 'key');
-
-        txn.onabort = function (e) {
-            // If the transaction aborts now its due to not being able to
-            // write to the database, likely due to the disk being full
-            e.preventDefault();
-            e.stopPropagation();
-            resolve(false);
-        };
-
-        txn.oncomplete = function () {
-            var matchedChrome = navigator.userAgent.match(/Chrome\/(\d+)/);
-            var matchedEdge = navigator.userAgent.match(/Edge\//);
-            // MS Edge pretends to be Chrome 42:
-            // https://msdn.microsoft.com/en-us/library/hh869301%28v=vs.85%29.aspx
-            resolve(matchedEdge || !matchedChrome || parseInt(matchedChrome[1], 10) >= 43);
-        };
-    })["catch"](function () {
-        return false; // error, so assume unsupported
-    });
-}
-
-function _checkBlobSupport(idb) {
-    if (typeof supportsBlobs === 'boolean') {
-        return Promise$1.resolve(supportsBlobs);
-    }
-    return _checkBlobSupportWithoutCaching(idb).then(function (value) {
-        supportsBlobs = value;
-        return supportsBlobs;
-    });
-}
-
-function _deferReadiness(dbInfo) {
-    var dbContext = dbContexts[dbInfo.name];
-
-    // Create a deferred object representing the current database operation.
-    var deferredOperation = {};
-
-    deferredOperation.promise = new Promise$1(function (resolve) {
-        deferredOperation.resolve = resolve;
-    });
-
-    // Enqueue the deferred operation.
-    dbContext.deferredOperations.push(deferredOperation);
-
-    // Chain its promise to the database readiness.
-    if (!dbContext.dbReady) {
-        dbContext.dbReady = deferredOperation.promise;
-    } else {
-        dbContext.dbReady = dbContext.dbReady.then(function () {
-            return deferredOperation.promise;
-        });
-    }
-}
-
-function _advanceReadiness(dbInfo) {
-    var dbContext = dbContexts[dbInfo.name];
-
-    // Dequeue a deferred operation.
-    var deferredOperation = dbContext.deferredOperations.pop();
-
-    // Resolve its promise (which is part of the database readiness
-    // chain of promises).
-    if (deferredOperation) {
-        deferredOperation.resolve();
-    }
-}
-
-function _getConnection(dbInfo, upgradeNeeded) {
-    return new Promise$1(function (resolve, reject) {
-
-        if (dbInfo.db) {
-            if (upgradeNeeded) {
-                _deferReadiness(dbInfo);
-                dbInfo.db.close();
-            } else {
-                return resolve(dbInfo.db);
-            }
-        }
-
-        var dbArgs = [dbInfo.name];
-
-        if (upgradeNeeded) {
-            dbArgs.push(dbInfo.version);
-        }
-
-        var openreq = idb.open.apply(idb, dbArgs);
-
-        if (upgradeNeeded) {
-            openreq.onupgradeneeded = function (e) {
-                var db = openreq.result;
-                try {
-                    db.createObjectStore(dbInfo.storeName);
-                    if (e.oldVersion <= 1) {
-                        // Added when support for blob shims was added
-                        db.createObjectStore(DETECT_BLOB_SUPPORT_STORE);
-                    }
-                } catch (ex) {
-                    if (ex.name === 'ConstraintError') {
-                        console.warn('The database "' + dbInfo.name + '"' + ' has been upgraded from version ' + e.oldVersion + ' to version ' + e.newVersion + ', but the storage "' + dbInfo.storeName + '" already exists.');
-                    } else {
-                        throw ex;
-                    }
-                }
-            };
-        }
-
-        openreq.onerror = function (e) {
-            e.preventDefault();
-            reject(openreq.error);
-        };
-
-        openreq.onsuccess = function () {
-            resolve(openreq.result);
-            _advanceReadiness(dbInfo);
-        };
-    });
-}
-
-function _getOriginalConnection(dbInfo) {
-    return _getConnection(dbInfo, false);
-}
-
-function _getUpgradedConnection(dbInfo) {
-    return _getConnection(dbInfo, true);
-}
-
-function _isUpgradeNeeded(dbInfo, defaultVersion) {
-    if (!dbInfo.db) {
-        return true;
-    }
-
-    var isNewStore = !dbInfo.db.objectStoreNames.contains(dbInfo.storeName);
-    var isDowngrade = dbInfo.version < dbInfo.db.version;
-    var isUpgrade = dbInfo.version > dbInfo.db.version;
-
-    if (isDowngrade) {
-        // If the version is not the default one
-        // then warn for impossible downgrade.
-        if (dbInfo.version !== defaultVersion) {
-            console.warn('The database "' + dbInfo.name + '"' + ' can\'t be downgraded from version ' + dbInfo.db.version + ' to version ' + dbInfo.version + '.');
-        }
-        // Align the versions to prevent errors.
-        dbInfo.version = dbInfo.db.version;
-    }
-
-    if (isUpgrade || isNewStore) {
-        // If the store is new then increment the version (if needed).
-        // This will trigger an "upgradeneeded" event which is required
-        // for creating a store.
-        if (isNewStore) {
-            var incVersion = dbInfo.db.version + 1;
-            if (incVersion > dbInfo.version) {
-                dbInfo.version = incVersion;
-            }
-        }
-
-        return true;
-    }
-
-    return false;
-}
-
-// encode a blob for indexeddb engines that don't support blobs
-function _encodeBlob(blob) {
-    return new Promise$1(function (resolve, reject) {
-        var reader = new FileReader();
-        reader.onerror = reject;
-        reader.onloadend = function (e) {
-            var base64 = btoa(e.target.result || '');
-            resolve({
-                __local_forage_encoded_blob: true,
-                data: base64,
-                type: blob.type
-            });
-        };
-        reader.readAsBinaryString(blob);
-    });
-}
-
-// decode an encoded blob
-function _decodeBlob(encodedBlob) {
-    var arrayBuff = _binStringToArrayBuffer(atob(encodedBlob.data));
-    return createBlob([arrayBuff], { type: encodedBlob.type });
-}
-
-// is this one of our fancy encoded blobs?
-function _isEncodedBlob(value) {
-    return value && value.__local_forage_encoded_blob;
-}
-
-// Specialize the default `ready()` function by making it dependent
-// on the current database operations. Thus, the driver will be actually
-// ready when it's been initialized (default) *and* there are no pending
-// operations on the database (initiated by some other instances).
-function _fullyReady(callback) {
-    var self = this;
-
-    var promise = self._initReady().then(function () {
-        var dbContext = dbContexts[self._dbInfo.name];
-
-        if (dbContext && dbContext.dbReady) {
-            return dbContext.dbReady;
-        }
-    });
-
-    executeTwoCallbacks(promise, callback, callback);
-    return promise;
-}
-
-// Open the IndexedDB database (automatically creates one if one didn't
-// previously exist), using any options set in the config.
-function _initStorage(options) {
-    var self = this;
-    var dbInfo = {
-        db: null
-    };
-
-    if (options) {
-        for (var i in options) {
-            dbInfo[i] = options[i];
-        }
-    }
-
-    // Initialize a singleton container for all running localForages.
-    if (!dbContexts) {
-        dbContexts = {};
-    }
-
-    // Get the current context of the database;
-    var dbContext = dbContexts[dbInfo.name];
-
-    // ...or create a new context.
-    if (!dbContext) {
-        dbContext = {
-            // Running localForages sharing a database.
-            forages: [],
-            // Shared database.
-            db: null,
-            // Database readiness (promise).
-            dbReady: null,
-            // Deferred operations on the database.
-            deferredOperations: []
-        };
-        // Register the new context in the global container.
-        dbContexts[dbInfo.name] = dbContext;
-    }
-
-    // Register itself as a running localForage in the current context.
-    dbContext.forages.push(self);
-
-    // Replace the default `ready()` function with the specialized one.
-    if (!self._initReady) {
-        self._initReady = self.ready;
-        self.ready = _fullyReady;
-    }
-
-    // Create an array of initialization states of the related localForages.
-    var initPromises = [];
-
-    function ignoreErrors() {
-        // Don't handle errors here,
-        // just makes sure related localForages aren't pending.
-        return Promise$1.resolve();
-    }
-
-    for (var j = 0; j < dbContext.forages.length; j++) {
-        var forage = dbContext.forages[j];
-        if (forage !== self) {
-            // Don't wait for itself...
-            initPromises.push(forage._initReady()["catch"](ignoreErrors));
-        }
-    }
-
-    // Take a snapshot of the related localForages.
-    var forages = dbContext.forages.slice(0);
-
-    // Initialize the connection process only when
-    // all the related localForages aren't pending.
-    return Promise$1.all(initPromises).then(function () {
-        dbInfo.db = dbContext.db;
-        // Get the connection or open a new one without upgrade.
-        return _getOriginalConnection(dbInfo);
-    }).then(function (db) {
-        dbInfo.db = db;
-        if (_isUpgradeNeeded(dbInfo, self._defaultConfig.version)) {
-            // Reopen the database for upgrading.
-            return _getUpgradedConnection(dbInfo);
-        }
-        return db;
-    }).then(function (db) {
-        dbInfo.db = dbContext.db = db;
-        self._dbInfo = dbInfo;
-        // Share the final connection amongst related localForages.
-        for (var k = 0; k < forages.length; k++) {
-            var forage = forages[k];
-            if (forage !== self) {
-                // Self is already up-to-date.
-                forage._dbInfo.db = dbInfo.db;
-                forage._dbInfo.version = dbInfo.version;
-            }
-        }
-    });
-}
-
-function getItem(key, callback) {
-    var self = this;
-
-    // Cast the key to a string, as that's all we can set as a key.
-    if (typeof key !== 'string') {
-        console.warn(key + ' used as a key, but it is not a string.');
-        key = String(key);
-    }
-
-    var promise = new Promise$1(function (resolve, reject) {
-        self.ready().then(function () {
-            var dbInfo = self._dbInfo;
-            var store = dbInfo.db.transaction(dbInfo.storeName, 'readonly').objectStore(dbInfo.storeName);
-            var req = store.get(key);
-
-            req.onsuccess = function () {
-                var value = req.result;
-                if (value === undefined) {
-                    value = null;
-                }
-                if (_isEncodedBlob(value)) {
-                    value = _decodeBlob(value);
-                }
-                resolve(value);
-            };
-
-            req.onerror = function () {
-                reject(req.error);
-            };
-        })["catch"](reject);
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-// Iterate over all items stored in database.
-function iterate(iterator, callback) {
-    var self = this;
-
-    var promise = new Promise$1(function (resolve, reject) {
-        self.ready().then(function () {
-            var dbInfo = self._dbInfo;
-            var store = dbInfo.db.transaction(dbInfo.storeName, 'readonly').objectStore(dbInfo.storeName);
-
-            var req = store.openCursor();
-            var iterationNumber = 1;
-
-            req.onsuccess = function () {
-                var cursor = req.result;
-
-                if (cursor) {
-                    var value = cursor.value;
-                    if (_isEncodedBlob(value)) {
-                        value = _decodeBlob(value);
-                    }
-                    var result = iterator(value, cursor.key, iterationNumber++);
-
-                    if (result !== void 0) {
-                        resolve(result);
-                    } else {
-                        cursor["continue"]();
-                    }
-                } else {
-                    resolve();
-                }
-            };
-
-            req.onerror = function () {
-                reject(req.error);
-            };
-        })["catch"](reject);
-    });
-
-    executeCallback(promise, callback);
-
-    return promise;
-}
-
-function setItem(key, value, callback) {
-    var self = this;
-
-    // Cast the key to a string, as that's all we can set as a key.
-    if (typeof key !== 'string') {
-        console.warn(key + ' used as a key, but it is not a string.');
-        key = String(key);
-    }
-
-    var promise = new Promise$1(function (resolve, reject) {
-        var dbInfo;
-        self.ready().then(function () {
-            dbInfo = self._dbInfo;
-            if (toString.call(value) === '[object Blob]') {
-                return _checkBlobSupport(dbInfo.db).then(function (blobSupport) {
-                    if (blobSupport) {
-                        return value;
-                    }
-                    return _encodeBlob(value);
-                });
-            }
-            return value;
-        }).then(function (value) {
-            var transaction = dbInfo.db.transaction(dbInfo.storeName, 'readwrite');
-            var store = transaction.objectStore(dbInfo.storeName);
-            var req = store.put(value, key);
-
-            // The reason we don't _save_ null is because IE 10 does
-            // not support saving the `null` type in IndexedDB. How
-            // ironic, given the bug below!
-            // See: https://github.com/mozilla/localForage/issues/161
-            if (value === null) {
-                value = undefined;
-            }
-
-            transaction.oncomplete = function () {
-                // Cast to undefined so the value passed to
-                // callback/promise is the same as what one would get out
-                // of `getItem()` later. This leads to some weirdness
-                // (setItem('foo', undefined) will return `null`), but
-                // it's not my fault localStorage is our baseline and that
-                // it's weird.
-                if (value === undefined) {
-                    value = null;
-                }
-
-                resolve(value);
-            };
-            transaction.onabort = transaction.onerror = function () {
-                var err = req.error ? req.error : req.transaction.error;
-                reject(err);
-            };
-        })["catch"](reject);
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-function removeItem(key, callback) {
-    var self = this;
-
-    // Cast the key to a string, as that's all we can set as a key.
-    if (typeof key !== 'string') {
-        console.warn(key + ' used as a key, but it is not a string.');
-        key = String(key);
-    }
-
-    var promise = new Promise$1(function (resolve, reject) {
-        self.ready().then(function () {
-            var dbInfo = self._dbInfo;
-            var transaction = dbInfo.db.transaction(dbInfo.storeName, 'readwrite');
-            var store = transaction.objectStore(dbInfo.storeName);
-
-            // We use a Grunt task to make this safe for IE and some
-            // versions of Android (including those used by Cordova).
-            // Normally IE won't like `.delete()` and will insist on
-            // using `['delete']()`, but we have a build step that
-            // fixes this for us now.
-            var req = store["delete"](key);
-            transaction.oncomplete = function () {
-                resolve();
-            };
-
-            transaction.onerror = function () {
-                reject(req.error);
-            };
-
-            // The request will be also be aborted if we've exceeded our storage
-            // space.
-            transaction.onabort = function () {
-                var err = req.error ? req.error : req.transaction.error;
-                reject(err);
-            };
-        })["catch"](reject);
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-function clear(callback) {
-    var self = this;
-
-    var promise = new Promise$1(function (resolve, reject) {
-        self.ready().then(function () {
-            var dbInfo = self._dbInfo;
-            var transaction = dbInfo.db.transaction(dbInfo.storeName, 'readwrite');
-            var store = transaction.objectStore(dbInfo.storeName);
-            var req = store.clear();
-
-            transaction.oncomplete = function () {
-                resolve();
-            };
-
-            transaction.onabort = transaction.onerror = function () {
-                var err = req.error ? req.error : req.transaction.error;
-                reject(err);
-            };
-        })["catch"](reject);
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-function length(callback) {
-    var self = this;
-
-    var promise = new Promise$1(function (resolve, reject) {
-        self.ready().then(function () {
-            var dbInfo = self._dbInfo;
-            var store = dbInfo.db.transaction(dbInfo.storeName, 'readonly').objectStore(dbInfo.storeName);
-            var req = store.count();
-
-            req.onsuccess = function () {
-                resolve(req.result);
-            };
-
-            req.onerror = function () {
-                reject(req.error);
-            };
-        })["catch"](reject);
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-function key(n, callback) {
-    var self = this;
-
-    var promise = new Promise$1(function (resolve, reject) {
-        if (n < 0) {
-            resolve(null);
-
-            return;
-        }
-
-        self.ready().then(function () {
-            var dbInfo = self._dbInfo;
-            var store = dbInfo.db.transaction(dbInfo.storeName, 'readonly').objectStore(dbInfo.storeName);
-
-            var advanced = false;
-            var req = store.openCursor();
-            req.onsuccess = function () {
-                var cursor = req.result;
-                if (!cursor) {
-                    // this means there weren't enough keys
-                    resolve(null);
-
-                    return;
-                }
-
-                if (n === 0) {
-                    // We have the first key, return it if that's what they
-                    // wanted.
-                    resolve(cursor.key);
-                } else {
-                    if (!advanced) {
-                        // Otherwise, ask the cursor to skip ahead n
-                        // records.
-                        advanced = true;
-                        cursor.advance(n);
-                    } else {
-                        // When we get here, we've got the nth key.
-                        resolve(cursor.key);
-                    }
-                }
-            };
-
-            req.onerror = function () {
-                reject(req.error);
-            };
-        })["catch"](reject);
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-function keys(callback) {
-    var self = this;
-
-    var promise = new Promise$1(function (resolve, reject) {
-        self.ready().then(function () {
-            var dbInfo = self._dbInfo;
-            var store = dbInfo.db.transaction(dbInfo.storeName, 'readonly').objectStore(dbInfo.storeName);
-
-            var req = store.openCursor();
-            var keys = [];
-
-            req.onsuccess = function () {
-                var cursor = req.result;
-
-                if (!cursor) {
-                    resolve(keys);
-                    return;
-                }
-
-                keys.push(cursor.key);
-                cursor["continue"]();
-            };
-
-            req.onerror = function () {
-                reject(req.error);
-            };
-        })["catch"](reject);
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-var asyncStorage = {
-    _driver: 'asyncStorage',
-    _initStorage: _initStorage,
-    iterate: iterate,
-    getItem: getItem,
-    setItem: setItem,
-    removeItem: removeItem,
-    clear: clear,
-    length: length,
-    key: key,
-    keys: keys
-};
-
-// Sadly, the best way to save binary data in WebSQL/localStorage is serializing
-// it to Base64, so this is how we store it to prevent very strange errors with less
-// verbose ways of binary <-> string data storage.
-var BASE_CHARS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
-
-var BLOB_TYPE_PREFIX = '~~local_forage_type~';
-var BLOB_TYPE_PREFIX_REGEX = /^~~local_forage_type~([^~]+)~/;
-
-var SERIALIZED_MARKER = '__lfsc__:';
-var SERIALIZED_MARKER_LENGTH = SERIALIZED_MARKER.length;
-
-// OMG the serializations!
-var TYPE_ARRAYBUFFER = 'arbf';
-var TYPE_BLOB = 'blob';
-var TYPE_INT8ARRAY = 'si08';
-var TYPE_UINT8ARRAY = 'ui08';
-var TYPE_UINT8CLAMPEDARRAY = 'uic8';
-var TYPE_INT16ARRAY = 'si16';
-var TYPE_INT32ARRAY = 'si32';
-var TYPE_UINT16ARRAY = 'ur16';
-var TYPE_UINT32ARRAY = 'ui32';
-var TYPE_FLOAT32ARRAY = 'fl32';
-var TYPE_FLOAT64ARRAY = 'fl64';
-var TYPE_SERIALIZED_MARKER_LENGTH = SERIALIZED_MARKER_LENGTH + TYPE_ARRAYBUFFER.length;
-
-var toString$1 = Object.prototype.toString;
-
-function stringToBuffer(serializedString) {
-    // Fill the string into a ArrayBuffer.
-    var bufferLength = serializedString.length * 0.75;
-    var len = serializedString.length;
-    var i;
-    var p = 0;
-    var encoded1, encoded2, encoded3, encoded4;
-
-    if (serializedString[serializedString.length - 1] === '=') {
-        bufferLength--;
-        if (serializedString[serializedString.length - 2] === '=') {
-            bufferLength--;
-        }
-    }
-
-    var buffer = new ArrayBuffer(bufferLength);
-    var bytes = new Uint8Array(buffer);
-
-    for (i = 0; i < len; i += 4) {
-        encoded1 = BASE_CHARS.indexOf(serializedString[i]);
-        encoded2 = BASE_CHARS.indexOf(serializedString[i + 1]);
-        encoded3 = BASE_CHARS.indexOf(serializedString[i + 2]);
-        encoded4 = BASE_CHARS.indexOf(serializedString[i + 3]);
-
-        /*jslint bitwise: true */
-        bytes[p++] = encoded1 << 2 | encoded2 >> 4;
-        bytes[p++] = (encoded2 & 15) << 4 | encoded3 >> 2;
-        bytes[p++] = (encoded3 & 3) << 6 | encoded4 & 63;
-    }
-    return buffer;
-}
-
-// Converts a buffer to a string to store, serialized, in the backend
-// storage library.
-function bufferToString(buffer) {
-    // base64-arraybuffer
-    var bytes = new Uint8Array(buffer);
-    var base64String = '';
-    var i;
-
-    for (i = 0; i < bytes.length; i += 3) {
-        /*jslint bitwise: true */
-        base64String += BASE_CHARS[bytes[i] >> 2];
-        base64String += BASE_CHARS[(bytes[i] & 3) << 4 | bytes[i + 1] >> 4];
-        base64String += BASE_CHARS[(bytes[i + 1] & 15) << 2 | bytes[i + 2] >> 6];
-        base64String += BASE_CHARS[bytes[i + 2] & 63];
-    }
-
-    if (bytes.length % 3 === 2) {
-        base64String = base64String.substring(0, base64String.length - 1) + '=';
-    } else if (bytes.length % 3 === 1) {
-        base64String = base64String.substring(0, base64String.length - 2) + '==';
-    }
-
-    return base64String;
-}
-
-// Serialize a value, afterwards executing a callback (which usually
-// instructs the `setItem()` callback/promise to be executed). This is how
-// we store binary data with localStorage.
-function serialize(value, callback) {
-    var valueType = '';
-    if (value) {
-        valueType = toString$1.call(value);
-    }
-
-    // Cannot use `value instanceof ArrayBuffer` or such here, as these
-    // checks fail when running the tests using casper.js...
-    //
-    // TODO: See why those tests fail and use a better solution.
-    if (value && (valueType === '[object ArrayBuffer]' || value.buffer && toString$1.call(value.buffer) === '[object ArrayBuffer]')) {
-        // Convert binary arrays to a string and prefix the string with
-        // a special marker.
-        var buffer;
-        var marker = SERIALIZED_MARKER;
-
-        if (value instanceof ArrayBuffer) {
-            buffer = value;
-            marker += TYPE_ARRAYBUFFER;
-        } else {
-            buffer = value.buffer;
-
-            if (valueType === '[object Int8Array]') {
-                marker += TYPE_INT8ARRAY;
-            } else if (valueType === '[object Uint8Array]') {
-                marker += TYPE_UINT8ARRAY;
-            } else if (valueType === '[object Uint8ClampedArray]') {
-                marker += TYPE_UINT8CLAMPEDARRAY;
-            } else if (valueType === '[object Int16Array]') {
-                marker += TYPE_INT16ARRAY;
-            } else if (valueType === '[object Uint16Array]') {
-                marker += TYPE_UINT16ARRAY;
-            } else if (valueType === '[object Int32Array]') {
-                marker += TYPE_INT32ARRAY;
-            } else if (valueType === '[object Uint32Array]') {
-                marker += TYPE_UINT32ARRAY;
-            } else if (valueType === '[object Float32Array]') {
-                marker += TYPE_FLOAT32ARRAY;
-            } else if (valueType === '[object Float64Array]') {
-                marker += TYPE_FLOAT64ARRAY;
-            } else {
-                callback(new Error('Failed to get type for BinaryArray'));
-            }
-        }
-
-        callback(marker + bufferToString(buffer));
-    } else if (valueType === '[object Blob]') {
-        // Conver the blob to a binaryArray and then to a string.
-        var fileReader = new FileReader();
-
-        fileReader.onload = function () {
-            // Backwards-compatible prefix for the blob type.
-            var str = BLOB_TYPE_PREFIX + value.type + '~' + bufferToString(this.result);
-
-            callback(SERIALIZED_MARKER + TYPE_BLOB + str);
-        };
-
-        fileReader.readAsArrayBuffer(value);
-    } else {
-        try {
-            callback(JSON.stringify(value));
-        } catch (e) {
-            console.error("Couldn't convert value into a JSON string: ", value);
-
-            callback(null, e);
-        }
-    }
-}
-
-// Deserialize data we've inserted into a value column/field. We place
-// special markers into our strings to mark them as encoded; this isn't
-// as nice as a meta field, but it's the only sane thing we can do whilst
-// keeping localStorage support intact.
-//
-// Oftentimes this will just deserialize JSON content, but if we have a
-// special marker (SERIALIZED_MARKER, defined above), we will extract
-// some kind of arraybuffer/binary data/typed array out of the string.
-function deserialize(value) {
-    // If we haven't marked this string as being specially serialized (i.e.
-    // something other than serialized JSON), we can just return it and be
-    // done with it.
-    if (value.substring(0, SERIALIZED_MARKER_LENGTH) !== SERIALIZED_MARKER) {
-        return JSON.parse(value);
-    }
-
-    // The following code deals with deserializing some kind of Blob or
-    // TypedArray. First we separate out the type of data we're dealing
-    // with from the data itself.
-    var serializedString = value.substring(TYPE_SERIALIZED_MARKER_LENGTH);
-    var type = value.substring(SERIALIZED_MARKER_LENGTH, TYPE_SERIALIZED_MARKER_LENGTH);
-
-    var blobType;
-    // Backwards-compatible blob type serialization strategy.
-    // DBs created with older versions of localForage will simply not have the blob type.
-    if (type === TYPE_BLOB && BLOB_TYPE_PREFIX_REGEX.test(serializedString)) {
-        var matcher = serializedString.match(BLOB_TYPE_PREFIX_REGEX);
-        blobType = matcher[1];
-        serializedString = serializedString.substring(matcher[0].length);
-    }
-    var buffer = stringToBuffer(serializedString);
-
-    // Return the right type based on the code/type set during
-    // serialization.
-    switch (type) {
-        case TYPE_ARRAYBUFFER:
-            return buffer;
-        case TYPE_BLOB:
-            return createBlob([buffer], { type: blobType });
-        case TYPE_INT8ARRAY:
-            return new Int8Array(buffer);
-        case TYPE_UINT8ARRAY:
-            return new Uint8Array(buffer);
-        case TYPE_UINT8CLAMPEDARRAY:
-            return new Uint8ClampedArray(buffer);
-        case TYPE_INT16ARRAY:
-            return new Int16Array(buffer);
-        case TYPE_UINT16ARRAY:
-            return new Uint16Array(buffer);
-        case TYPE_INT32ARRAY:
-            return new Int32Array(buffer);
-        case TYPE_UINT32ARRAY:
-            return new Uint32Array(buffer);
-        case TYPE_FLOAT32ARRAY:
-            return new Float32Array(buffer);
-        case TYPE_FLOAT64ARRAY:
-            return new Float64Array(buffer);
-        default:
-            throw new Error('Unkown type: ' + type);
-    }
-}
-
-var localforageSerializer = {
-    serialize: serialize,
-    deserialize: deserialize,
-    stringToBuffer: stringToBuffer,
-    bufferToString: bufferToString
-};
-
-/*
- * Includes code from:
- *
- * base64-arraybuffer
- * https://github.com/niklasvh/base64-arraybuffer
- *
- * Copyright (c) 2012 Niklas von Hertzen
- * Licensed under the MIT license.
- */
-// Open the WebSQL database (automatically creates one if one didn't
-// previously exist), using any options set in the config.
-function _initStorage$1(options) {
-    var self = this;
-    var dbInfo = {
-        db: null
-    };
-
-    if (options) {
-        for (var i in options) {
-            dbInfo[i] = typeof options[i] !== 'string' ? options[i].toString() : options[i];
-        }
-    }
-
-    var dbInfoPromise = new Promise$1(function (resolve, reject) {
-        // Open the database; the openDatabase API will automatically
-        // create it for us if it doesn't exist.
-        try {
-            dbInfo.db = openDatabase(dbInfo.name, String(dbInfo.version), dbInfo.description, dbInfo.size);
-        } catch (e) {
-            return reject(e);
-        }
-
-        // Create our key/value table if it doesn't exist.
-        dbInfo.db.transaction(function (t) {
-            t.executeSql('CREATE TABLE IF NOT EXISTS ' + dbInfo.storeName + ' (id INTEGER PRIMARY KEY, key unique, value)', [], function () {
-                self._dbInfo = dbInfo;
-                resolve();
-            }, function (t, error) {
-                reject(error);
-            });
-        });
-    });
-
-    dbInfo.serializer = localforageSerializer;
-    return dbInfoPromise;
-}
-
-function getItem$1(key, callback) {
-    var self = this;
-
-    // Cast the key to a string, as that's all we can set as a key.
-    if (typeof key !== 'string') {
-        console.warn(key + ' used as a key, but it is not a string.');
-        key = String(key);
-    }
-
-    var promise = new Promise$1(function (resolve, reject) {
-        self.ready().then(function () {
-            var dbInfo = self._dbInfo;
-            dbInfo.db.transaction(function (t) {
-                t.executeSql('SELECT * FROM ' + dbInfo.storeName + ' WHERE key = ? LIMIT 1', [key], function (t, results) {
-                    var result = results.rows.length ? results.rows.item(0).value : null;
-
-                    // Check to see if this is serialized content we need to
-                    // unpack.
-                    if (result) {
-                        result = dbInfo.serializer.deserialize(result);
-                    }
-
-                    resolve(result);
-                }, function (t, error) {
-
-                    reject(error);
-                });
-            });
-        })["catch"](reject);
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-function iterate$1(iterator, callback) {
-    var self = this;
-
-    var promise = new Promise$1(function (resolve, reject) {
-        self.ready().then(function () {
-            var dbInfo = self._dbInfo;
-
-            dbInfo.db.transaction(function (t) {
-                t.executeSql('SELECT * FROM ' + dbInfo.storeName, [], function (t, results) {
-                    var rows = results.rows;
-                    var length = rows.length;
-
-                    for (var i = 0; i < length; i++) {
-                        var item = rows.item(i);
-                        var result = item.value;
-
-                        // Check to see if this is serialized content
-                        // we need to unpack.
-                        if (result) {
-                            result = dbInfo.serializer.deserialize(result);
-                        }
-
-                        result = iterator(result, item.key, i + 1);
-
-                        // void(0) prevents problems with redefinition
-                        // of `undefined`.
-                        if (result !== void 0) {
-                            resolve(result);
-                            return;
-                        }
-                    }
-
-                    resolve();
-                }, function (t, error) {
-                    reject(error);
-                });
-            });
-        })["catch"](reject);
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-function _setItem(key, value, callback, retriesLeft) {
-    var self = this;
-
-    // Cast the key to a string, as that's all we can set as a key.
-    if (typeof key !== 'string') {
-        console.warn(key + ' used as a key, but it is not a string.');
-        key = String(key);
-    }
-
-    var promise = new Promise$1(function (resolve, reject) {
-        self.ready().then(function () {
-            // The localStorage API doesn't return undefined values in an
-            // "expected" way, so undefined is always cast to null in all
-            // drivers. See: https://github.com/mozilla/localForage/pull/42
-            if (value === undefined) {
-                value = null;
-            }
-
-            // Save the original value to pass to the callback.
-            var originalValue = value;
-
-            var dbInfo = self._dbInfo;
-            dbInfo.serializer.serialize(value, function (value, error) {
-                if (error) {
-                    reject(error);
-                } else {
-                    dbInfo.db.transaction(function (t) {
-                        t.executeSql('INSERT OR REPLACE INTO ' + dbInfo.storeName + ' (key, value) VALUES (?, ?)', [key, value], function () {
-                            resolve(originalValue);
-                        }, function (t, error) {
-                            reject(error);
-                        });
-                    }, function (sqlError) {
-                        // The transaction failed; check
-                        // to see if it's a quota error.
-                        if (sqlError.code === sqlError.QUOTA_ERR) {
-                            // We reject the callback outright for now, but
-                            // it's worth trying to re-run the transaction.
-                            // Even if the user accepts the prompt to use
-                            // more storage on Safari, this error will
-                            // be called.
-                            //
-                            // Try to re-run the transaction.
-                            if (retriesLeft > 0) {
-                                resolve(_setItem.apply(self, [key, originalValue, callback, retriesLeft - 1]));
-                                return;
-                            }
-                            reject(sqlError);
-                        }
-                    });
-                }
-            });
-        })["catch"](reject);
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-function setItem$1(key, value, callback) {
-    return _setItem.apply(this, [key, value, callback, 1]);
-}
-
-function removeItem$1(key, callback) {
-    var self = this;
-
-    // Cast the key to a string, as that's all we can set as a key.
-    if (typeof key !== 'string') {
-        console.warn(key + ' used as a key, but it is not a string.');
-        key = String(key);
-    }
-
-    var promise = new Promise$1(function (resolve, reject) {
-        self.ready().then(function () {
-            var dbInfo = self._dbInfo;
-            dbInfo.db.transaction(function (t) {
-                t.executeSql('DELETE FROM ' + dbInfo.storeName + ' WHERE key = ?', [key], function () {
-                    resolve();
-                }, function (t, error) {
-
-                    reject(error);
-                });
-            });
-        })["catch"](reject);
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-// Deletes every item in the table.
-// TODO: Find out if this resets the AUTO_INCREMENT number.
-function clear$1(callback) {
-    var self = this;
-
-    var promise = new Promise$1(function (resolve, reject) {
-        self.ready().then(function () {
-            var dbInfo = self._dbInfo;
-            dbInfo.db.transaction(function (t) {
-                t.executeSql('DELETE FROM ' + dbInfo.storeName, [], function () {
-                    resolve();
-                }, function (t, error) {
-                    reject(error);
-                });
-            });
-        })["catch"](reject);
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-// Does a simple `COUNT(key)` to get the number of items stored in
-// localForage.
-function length$1(callback) {
-    var self = this;
-
-    var promise = new Promise$1(function (resolve, reject) {
-        self.ready().then(function () {
-            var dbInfo = self._dbInfo;
-            dbInfo.db.transaction(function (t) {
-                // Ahhh, SQL makes this one soooooo easy.
-                t.executeSql('SELECT COUNT(key) as c FROM ' + dbInfo.storeName, [], function (t, results) {
-                    var result = results.rows.item(0).c;
-
-                    resolve(result);
-                }, function (t, error) {
-
-                    reject(error);
-                });
-            });
-        })["catch"](reject);
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-// Return the key located at key index X; essentially gets the key from a
-// `WHERE id = ?`. This is the most efficient way I can think to implement
-// this rarely-used (in my experience) part of the API, but it can seem
-// inconsistent, because we do `INSERT OR REPLACE INTO` on `setItem()`, so
-// the ID of each key will change every time it's updated. Perhaps a stored
-// procedure for the `setItem()` SQL would solve this problem?
-// TODO: Don't change ID on `setItem()`.
-function key$1(n, callback) {
-    var self = this;
-
-    var promise = new Promise$1(function (resolve, reject) {
-        self.ready().then(function () {
-            var dbInfo = self._dbInfo;
-            dbInfo.db.transaction(function (t) {
-                t.executeSql('SELECT key FROM ' + dbInfo.storeName + ' WHERE id = ? LIMIT 1', [n + 1], function (t, results) {
-                    var result = results.rows.length ? results.rows.item(0).key : null;
-                    resolve(result);
-                }, function (t, error) {
-                    reject(error);
-                });
-            });
-        })["catch"](reject);
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-function keys$1(callback) {
-    var self = this;
-
-    var promise = new Promise$1(function (resolve, reject) {
-        self.ready().then(function () {
-            var dbInfo = self._dbInfo;
-            dbInfo.db.transaction(function (t) {
-                t.executeSql('SELECT key FROM ' + dbInfo.storeName, [], function (t, results) {
-                    var keys = [];
-
-                    for (var i = 0; i < results.rows.length; i++) {
-                        keys.push(results.rows.item(i).key);
-                    }
-
-                    resolve(keys);
-                }, function (t, error) {
-
-                    reject(error);
-                });
-            });
-        })["catch"](reject);
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-var webSQLStorage = {
-    _driver: 'webSQLStorage',
-    _initStorage: _initStorage$1,
-    iterate: iterate$1,
-    getItem: getItem$1,
-    setItem: setItem$1,
-    removeItem: removeItem$1,
-    clear: clear$1,
-    length: length$1,
-    key: key$1,
-    keys: keys$1
-};
-
-// Config the localStorage backend, using options set in the config.
-function _initStorage$2(options) {
-    var self = this;
-    var dbInfo = {};
-    if (options) {
-        for (var i in options) {
-            dbInfo[i] = options[i];
-        }
-    }
-
-    dbInfo.keyPrefix = dbInfo.name + '/';
-
-    if (dbInfo.storeName !== self._defaultConfig.storeName) {
-        dbInfo.keyPrefix += dbInfo.storeName + '/';
-    }
-
-    self._dbInfo = dbInfo;
-    dbInfo.serializer = localforageSerializer;
-
-    return Promise$1.resolve();
-}
-
-// Remove all keys from the datastore, effectively destroying all data in
-// the app's key/value store!
-function clear$2(callback) {
-    var self = this;
-    var promise = self.ready().then(function () {
-        var keyPrefix = self._dbInfo.keyPrefix;
-
-        for (var i = localStorage.length - 1; i >= 0; i--) {
-            var key = localStorage.key(i);
-
-            if (key.indexOf(keyPrefix) === 0) {
-                localStorage.removeItem(key);
-            }
-        }
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-// Retrieve an item from the store. Unlike the original async_storage
-// library in Gaia, we don't modify return values at all. If a key's value
-// is `undefined`, we pass that value to the callback function.
-function getItem$2(key, callback) {
-    var self = this;
-
-    // Cast the key to a string, as that's all we can set as a key.
-    if (typeof key !== 'string') {
-        console.warn(key + ' used as a key, but it is not a string.');
-        key = String(key);
-    }
-
-    var promise = self.ready().then(function () {
-        var dbInfo = self._dbInfo;
-        var result = localStorage.getItem(dbInfo.keyPrefix + key);
-
-        // If a result was found, parse it from the serialized
-        // string into a JS object. If result isn't truthy, the key
-        // is likely undefined and we'll pass it straight to the
-        // callback.
-        if (result) {
-            result = dbInfo.serializer.deserialize(result);
-        }
-
-        return result;
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-// Iterate over all items in the store.
-function iterate$2(iterator, callback) {
-    var self = this;
-
-    var promise = self.ready().then(function () {
-        var dbInfo = self._dbInfo;
-        var keyPrefix = dbInfo.keyPrefix;
-        var keyPrefixLength = keyPrefix.length;
-        var length = localStorage.length;
-
-        // We use a dedicated iterator instead of the `i` variable below
-        // so other keys we fetch in localStorage aren't counted in
-        // the `iterationNumber` argument passed to the `iterate()`
-        // callback.
-        //
-        // See: github.com/mozilla/localForage/pull/435#discussion_r38061530
-        var iterationNumber = 1;
-
-        for (var i = 0; i < length; i++) {
-            var key = localStorage.key(i);
-            if (key.indexOf(keyPrefix) !== 0) {
-                continue;
-            }
-            var value = localStorage.getItem(key);
-
-            // If a result was found, parse it from the serialized
-            // string into a JS object. If result isn't truthy, the
-            // key is likely undefined and we'll pass it straight
-            // to the iterator.
-            if (value) {
-                value = dbInfo.serializer.deserialize(value);
-            }
-
-            value = iterator(value, key.substring(keyPrefixLength), iterationNumber++);
-
-            if (value !== void 0) {
-                return value;
-            }
-        }
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-// Same as localStorage's key() method, except takes a callback.
-function key$2(n, callback) {
-    var self = this;
-    var promise = self.ready().then(function () {
-        var dbInfo = self._dbInfo;
-        var result;
-        try {
-            result = localStorage.key(n);
-        } catch (error) {
-            result = null;
-        }
-
-        // Remove the prefix from the key, if a key is found.
-        if (result) {
-            result = result.substring(dbInfo.keyPrefix.length);
-        }
-
-        return result;
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-function keys$2(callback) {
-    var self = this;
-    var promise = self.ready().then(function () {
-        var dbInfo = self._dbInfo;
-        var length = localStorage.length;
-        var keys = [];
-
-        for (var i = 0; i < length; i++) {
-            if (localStorage.key(i).indexOf(dbInfo.keyPrefix) === 0) {
-                keys.push(localStorage.key(i).substring(dbInfo.keyPrefix.length));
-            }
-        }
-
-        return keys;
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-// Supply the number of keys in the datastore to the callback function.
-function length$2(callback) {
-    var self = this;
-    var promise = self.keys().then(function (keys) {
-        return keys.length;
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-// Remove an item from the store, nice and simple.
-function removeItem$2(key, callback) {
-    var self = this;
-
-    // Cast the key to a string, as that's all we can set as a key.
-    if (typeof key !== 'string') {
-        console.warn(key + ' used as a key, but it is not a string.');
-        key = String(key);
-    }
-
-    var promise = self.ready().then(function () {
-        var dbInfo = self._dbInfo;
-        localStorage.removeItem(dbInfo.keyPrefix + key);
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-// Set a key's value and run an optional callback once the value is set.
-// Unlike Gaia's implementation, the callback function is passed the value,
-// in case you want to operate on that value only after you're sure it
-// saved, or something like that.
-function setItem$2(key, value, callback) {
-    var self = this;
-
-    // Cast the key to a string, as that's all we can set as a key.
-    if (typeof key !== 'string') {
-        console.warn(key + ' used as a key, but it is not a string.');
-        key = String(key);
-    }
-
-    var promise = self.ready().then(function () {
-        // Convert undefined values to null.
-        // https://github.com/mozilla/localForage/pull/42
-        if (value === undefined) {
-            value = null;
-        }
-
-        // Save the original value to pass to the callback.
-        var originalValue = value;
-
-        return new Promise$1(function (resolve, reject) {
-            var dbInfo = self._dbInfo;
-            dbInfo.serializer.serialize(value, function (value, error) {
-                if (error) {
-                    reject(error);
-                } else {
-                    try {
-                        localStorage.setItem(dbInfo.keyPrefix + key, value);
-                        resolve(originalValue);
-                    } catch (e) {
-                        // localStorage capacity exceeded.
-                        // TODO: Make this a specific error/event.
-                        if (e.name === 'QuotaExceededError' || e.name === 'NS_ERROR_DOM_QUOTA_REACHED') {
-                            reject(e);
-                        }
-                        reject(e);
-                    }
-                }
-            });
-        });
-    });
-
-    executeCallback(promise, callback);
-    return promise;
-}
-
-var localStorageWrapper = {
-    _driver: 'localStorageWrapper',
-    _initStorage: _initStorage$2,
-    // Default API, from Gaia/localStorage.
-    iterate: iterate$2,
-    getItem: getItem$2,
-    setItem: setItem$2,
-    removeItem: removeItem$2,
-    clear: clear$2,
-    length: length$2,
-    key: key$2,
-    keys: keys$2
-};
-
-// Custom drivers are stored here when `defineDriver()` is called.
-// They are shared across all instances of localForage.
-var CustomDrivers = {};
-
-var DriverType = {
-    INDEXEDDB: 'asyncStorage',
-    LOCALSTORAGE: 'localStorageWrapper',
-    WEBSQL: 'webSQLStorage'
-};
-
-var DefaultDriverOrder = [DriverType.INDEXEDDB, DriverType.WEBSQL, DriverType.LOCALSTORAGE];
-
-var LibraryMethods = ['clear', 'getItem', 'iterate', 'key', 'keys', 'length', 'removeItem', 'setItem'];
-
-var DefaultConfig = {
-    description: '',
-    driver: DefaultDriverOrder.slice(),
-    name: 'localforage',
-    // Default DB size is _JUST UNDER_ 5MB, as it's the highest size
-    // we can use without a prompt.
-    size: 4980736,
-    storeName: 'keyvaluepairs',
-    version: 1.0
-};
-
-var driverSupport = {};
-// Check to see if IndexedDB is available and if it is the latest
-// implementation; it's our preferred backend library. We use "_spec_test"
-// as the name of the database because it's not the one we'll operate on,
-// but it's useful to make sure its using the right spec.
-// See: https://github.com/mozilla/localForage/issues/128
-driverSupport[DriverType.INDEXEDDB] = isIndexedDBValid();
-
-driverSupport[DriverType.WEBSQL] = isWebSQLValid();
-
-driverSupport[DriverType.LOCALSTORAGE] = isLocalStorageValid();
-
-var isArray = Array.isArray || function (arg) {
-    return Object.prototype.toString.call(arg) === '[object Array]';
-};
-
-function callWhenReady(localForageInstance, libraryMethod) {
-    localForageInstance[libraryMethod] = function () {
-        var _args = arguments;
-        return localForageInstance.ready().then(function () {
-            return localForageInstance[libraryMethod].apply(localForageInstance, _args);
-        });
-    };
-}
-
-function extend() {
-    for (var i = 1; i < arguments.length; i++) {
-        var arg = arguments[i];
-
-        if (arg) {
-            for (var key in arg) {
-                if (arg.hasOwnProperty(key)) {
-                    if (isArray(arg[key])) {
-                        arguments[0][key] = arg[key].slice();
-                    } else {
-                        arguments[0][key] = arg[key];
-                    }
-                }
-            }
-        }
-    }
-
-    return arguments[0];
-}
-
-function isLibraryDriver(driverName) {
-    for (var driver in DriverType) {
-        if (DriverType.hasOwnProperty(driver) && DriverType[driver] === driverName) {
-            return true;
-        }
-    }
-
-    return false;
-}
-
-var LocalForage = function () {
-    function LocalForage(options) {
-        _classCallCheck(this, LocalForage);
-
-        this.INDEXEDDB = DriverType.INDEXEDDB;
-        this.LOCALSTORAGE = DriverType.LOCALSTORAGE;
-        this.WEBSQL = DriverType.WEBSQL;
-
-        this._defaultConfig = extend({}, DefaultConfig);
-        this._config = extend({}, this._defaultConfig, options);
-        this._driverSet = null;
-        this._initDriver = null;
-        this._ready = false;
-        this._dbInfo = null;
-
-        this._wrapLibraryMethodsWithReady();
-        this.setDriver(this._config.driver)["catch"](function () {});
-    }
-
-    // Set any config values for localForage; can be called anytime before
-    // the first API call (e.g. `getItem`, `setItem`).
-    // We loop through options so we don't overwrite existing config
-    // values.
-
-
-    LocalForage.prototype.config = function config(options) {
-        // If the options argument is an object, we use it to set values.
-        // Otherwise, we return either a specified config value or all
-        // config values.
-        if ((typeof options === 'undefined' ? 'undefined' : _typeof(options)) === 'object') {
-            // If localforage is ready and fully initialized, we can't set
-            // any new configuration values. Instead, we return an error.
-            if (this._ready) {
-                return new Error("Can't call config() after localforage " + 'has been used.');
-            }
-
-            for (var i in options) {
-                if (i === 'storeName') {
-                    options[i] = options[i].replace(/\W/g, '_');
-                }
-
-                if (i === 'version' && typeof options[i] !== 'number') {
-                    return new Error('Database version must be a number.');
-                }
-
-                this._config[i] = options[i];
-            }
-
-            // after all config options are set and
-            // the driver option is used, try setting it
-            if ('driver' in options && options.driver) {
-                return this.setDriver(this._config.driver);
-            }
-
-            return true;
-        } else if (typeof options === 'string') {
-            return this._config[options];
-        } else {
-            return this._config;
-        }
-    };
-
-    // Used to define a custom driver, shared across all instances of
-    // localForage.
-
-
-    LocalForage.prototype.defineDriver = function defineDriver(driverObject, callback, errorCallback) {
-        var promise = new Promise$1(function (resolve, reject) {
-            try {
-                var driverName = driverObject._driver;
-                var complianceError = new Error('Custom driver not compliant; see ' + 'https://mozilla.github.io/localForage/#definedriver');
-                var namingError = new Error('Custom driver name already in use: ' + driverObject._driver);
-
-                // A driver name should be defined and not overlap with the
-                // library-defined, default drivers.
-                if (!driverObject._driver) {
-                    reject(complianceError);
-                    return;
-                }
-                if (isLibraryDriver(driverObject._driver)) {
-                    reject(namingError);
-                    return;
-                }
-
-                var customDriverMethods = LibraryMethods.concat('_initStorage');
-                for (var i = 0; i < customDriverMethods.length; i++) {
-                    var customDriverMethod = customDriverMethods[i];
-                    if (!customDriverMethod || !driverObject[customDriverMethod] || typeof driverObject[customDriverMethod] !== 'function') {
-                        reject(complianceError);
-                        return;
-                    }
-                }
-
-                var supportPromise = Promise$1.resolve(true);
-                if ('_support' in driverObject) {
-                    if (driverObject._support && typeof driverObject._support === 'function') {
-                        supportPromise = driverObject._support();
-                    } else {
-                        supportPromise = Promise$1.resolve(!!driverObject._support);
-                    }
-                }
-
-                supportPromise.then(function (supportResult) {
-                    driverSupport[driverName] = supportResult;
-                    CustomDrivers[driverName] = driverObject;
-                    resolve();
-                }, reject);
-            } catch (e) {
-                reject(e);
-            }
-        });
-
-        executeTwoCallbacks(promise, callback, errorCallback);
-        return promise;
-    };
-
-    LocalForage.prototype.driver = function driver() {
-        return this._driver || null;
-    };
-
-    LocalForage.prototype.getDriver = function getDriver(driverName, callback, errorCallback) {
-        var self = this;
-        var getDriverPromise = Promise$1.resolve().then(function () {
-            if (isLibraryDriver(driverName)) {
-                switch (driverName) {
-                    case self.INDEXEDDB:
-                        return asyncStorage;
-                    case self.LOCALSTORAGE:
-                        return localStorageWrapper;
-                    case self.WEBSQL:
-                        return webSQLStorage;
-                }
-            } else if (CustomDrivers[driverName]) {
-                return CustomDrivers[driverName];
-            } else {
-                throw new Error('Driver not found.');
-            }
-        });
-        executeTwoCallbacks(getDriverPromise, callback, errorCallback);
-        return getDriverPromise;
-    };
-
-    LocalForage.prototype.getSerializer = function getSerializer(callback) {
-        var serializerPromise = Promise$1.resolve(localforageSerializer);
-        executeTwoCallbacks(serializerPromise, callback);
-        return serializerPromise;
-    };
-
-    LocalForage.prototype.ready = function ready(callback) {
-        var self = this;
-
-        var promise = self._driverSet.then(function () {
-            if (self._ready === null) {
-                self._ready = self._initDriver();
-            }
-
-            return self._ready;
-        });
-
-        executeTwoCallbacks(promise, callback, callback);
-        return promise;
-    };
-
-    LocalForage.prototype.setDriver = function setDriver(drivers, callback, errorCallback) {
-        var self = this;
-
-        if (!isArray(drivers)) {
-            drivers = [drivers];
-        }
-
-        var supportedDrivers = this._getSupportedDrivers(drivers);
-
-        function setDriverToConfig() {
-            self._config.driver = self.driver();
-        }
-
-        function extendSelfWithDriver(driver) {
-            self._extend(driver);
-            setDriverToConfig();
-
-            self._ready = self._initStorage(self._config);
-            return self._ready;
-        }
-
-        function initDriver(supportedDrivers) {
-            return function () {
-                var currentDriverIndex = 0;
-
-                function driverPromiseLoop() {
-                    while (currentDriverIndex < supportedDrivers.length) {
-                        var driverName = supportedDrivers[currentDriverIndex];
-                        currentDriverIndex++;
-
-                        self._dbInfo = null;
-                        self._ready = null;
-
-                        return self.getDriver(driverName).then(extendSelfWithDriver)["catch"](driverPromiseLoop);
-                    }
-
-                    setDriverToConfig();
-                    var error = new Error('No available storage method found.');
-                    self._driverSet = Promise$1.reject(error);
-                    return self._driverSet;
-                }
-
-                return driverPromiseLoop();
-            };
-        }
-
-        // There might be a driver initialization in progress
-        // so wait for it to finish in order to avoid a possible
-        // race condition to set _dbInfo
-        var oldDriverSetDone = this._driverSet !== null ? this._driverSet["catch"](function () {
-            return Promise$1.resolve();
-        }) : Promise$1.resolve();
-
-        this._driverSet = oldDriverSetDone.then(function () {
-            var driverName = supportedDrivers[0];
-            self._dbInfo = null;
-            self._ready = null;
-
-            return self.getDriver(driverName).then(function (driver) {
-                self._driver = driver._driver;
-                setDriverToConfig();
-                self._wrapLibraryMethodsWithReady();
-                self._initDriver = initDriver(supportedDrivers);
-            });
-        })["catch"](function () {
-            setDriverToConfig();
-            var error = new Error('No available storage method found.');
-            self._driverSet = Promise$1.reject(error);
-            return self._driverSet;
-        });
-
-        executeTwoCallbacks(this._driverSet, callback, errorCallback);
-        return this._driverSet;
-    };
-
-    LocalForage.prototype.supports = function supports(driverName) {
-        return !!driverSupport[driverName];
-    };
-
-    LocalForage.prototype._extend = function _extend(libraryMethodsAndProperties) {
-        extend(this, libraryMethodsAndProperties);
-    };
-
-    LocalForage.prototype._getSupportedDrivers = function _getSupportedDrivers(drivers) {
-        var supportedDrivers = [];
-        for (var i = 0, len = drivers.length; i < len; i++) {
-            var driverName = drivers[i];
-            if (this.supports(driverName)) {
-                supportedDrivers.push(driverName);
-            }
-        }
-        return supportedDrivers;
-    };
-
-    LocalForage.prototype._wrapLibraryMethodsWithReady = function _wrapLibraryMethodsWithReady() {
-        // Add a stub for each driver API method that delays the call to the
-        // corresponding driver method until localForage is ready. These stubs
-        // will be replaced by the driver methods as soon as the driver is
-        // loaded, so there is no performance impact.
-        for (var i = 0; i < LibraryMethods.length; i++) {
-            callWhenReady(this, LibraryMethods[i]);
-        }
-    };
-
-    LocalForage.prototype.createInstance = function createInstance(options) {
-        return new LocalForage(options);
-    };
-
-    return LocalForage;
-}();
-
-// The actual localForage object that we expose as a module or via a
-// global. It's extended by pulling in one of our other libraries.
-
-
-var localforage_js = new LocalForage();
-
-module.exports = localforage_js;
-
-},{"undefined":undefined}]},{},[1])(1)
-});
\ No newline at end of file