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Modules
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MatteZ02
316
node_modules/idb/build/idb.js
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vendored
Normal file
316
node_modules/idb/build/idb.js
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vendored
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(function (global, factory) {
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typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
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typeof define === 'function' && define.amd ? define(['exports'], factory) :
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(global = global || self, factory(global.idb = {}));
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}(this, function (exports) { 'use strict';
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function toArray(arr) {
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return Array.prototype.slice.call(arr);
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}
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function promisifyRequest(request) {
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return new Promise(function(resolve, reject) {
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request.onsuccess = function() {
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resolve(request.result);
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};
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request.onerror = function() {
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reject(request.error);
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};
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});
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}
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function promisifyRequestCall(obj, method, args) {
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var request;
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var p = new Promise(function(resolve, reject) {
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request = obj[method].apply(obj, args);
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promisifyRequest(request).then(resolve, reject);
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});
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p.request = request;
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return p;
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}
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function promisifyCursorRequestCall(obj, method, args) {
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var p = promisifyRequestCall(obj, method, args);
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return p.then(function(value) {
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if (!value) return;
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return new Cursor(value, p.request);
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});
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}
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function proxyProperties(ProxyClass, targetProp, properties) {
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properties.forEach(function(prop) {
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Object.defineProperty(ProxyClass.prototype, prop, {
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get: function() {
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return this[targetProp][prop];
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},
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set: function(val) {
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this[targetProp][prop] = val;
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}
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});
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});
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}
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function proxyRequestMethods(ProxyClass, targetProp, Constructor, properties) {
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properties.forEach(function(prop) {
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if (!(prop in Constructor.prototype)) return;
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ProxyClass.prototype[prop] = function() {
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return promisifyRequestCall(this[targetProp], prop, arguments);
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};
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});
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}
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function proxyMethods(ProxyClass, targetProp, Constructor, properties) {
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properties.forEach(function(prop) {
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if (!(prop in Constructor.prototype)) return;
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ProxyClass.prototype[prop] = function() {
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return this[targetProp][prop].apply(this[targetProp], arguments);
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};
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});
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}
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function proxyCursorRequestMethods(ProxyClass, targetProp, Constructor, properties) {
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properties.forEach(function(prop) {
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if (!(prop in Constructor.prototype)) return;
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ProxyClass.prototype[prop] = function() {
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return promisifyCursorRequestCall(this[targetProp], prop, arguments);
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};
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});
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}
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function Index(index) {
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this._index = index;
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}
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proxyProperties(Index, '_index', [
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'name',
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'keyPath',
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'multiEntry',
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'unique'
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]);
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proxyRequestMethods(Index, '_index', IDBIndex, [
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'get',
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'getKey',
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'getAll',
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'getAllKeys',
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'count'
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]);
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proxyCursorRequestMethods(Index, '_index', IDBIndex, [
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'openCursor',
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'openKeyCursor'
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]);
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function Cursor(cursor, request) {
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this._cursor = cursor;
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this._request = request;
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}
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proxyProperties(Cursor, '_cursor', [
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'direction',
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'key',
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'primaryKey',
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'value'
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]);
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proxyRequestMethods(Cursor, '_cursor', IDBCursor, [
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'update',
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'delete'
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]);
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// proxy 'next' methods
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['advance', 'continue', 'continuePrimaryKey'].forEach(function(methodName) {
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if (!(methodName in IDBCursor.prototype)) return;
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Cursor.prototype[methodName] = function() {
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var cursor = this;
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var args = arguments;
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return Promise.resolve().then(function() {
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cursor._cursor[methodName].apply(cursor._cursor, args);
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return promisifyRequest(cursor._request).then(function(value) {
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if (!value) return;
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return new Cursor(value, cursor._request);
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});
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});
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};
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});
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function ObjectStore(store) {
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this._store = store;
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}
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ObjectStore.prototype.createIndex = function() {
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return new Index(this._store.createIndex.apply(this._store, arguments));
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};
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ObjectStore.prototype.index = function() {
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return new Index(this._store.index.apply(this._store, arguments));
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};
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proxyProperties(ObjectStore, '_store', [
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'name',
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'keyPath',
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'indexNames',
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'autoIncrement'
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]);
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proxyRequestMethods(ObjectStore, '_store', IDBObjectStore, [
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'put',
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'add',
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'delete',
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'clear',
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'get',
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'getAll',
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'getKey',
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'getAllKeys',
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'count'
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]);
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proxyCursorRequestMethods(ObjectStore, '_store', IDBObjectStore, [
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'openCursor',
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'openKeyCursor'
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]);
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proxyMethods(ObjectStore, '_store', IDBObjectStore, [
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'deleteIndex'
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]);
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function Transaction(idbTransaction) {
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this._tx = idbTransaction;
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this.complete = new Promise(function(resolve, reject) {
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idbTransaction.oncomplete = function() {
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resolve();
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};
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idbTransaction.onerror = function() {
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reject(idbTransaction.error);
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};
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idbTransaction.onabort = function() {
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reject(idbTransaction.error);
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};
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});
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}
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Transaction.prototype.objectStore = function() {
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return new ObjectStore(this._tx.objectStore.apply(this._tx, arguments));
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};
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proxyProperties(Transaction, '_tx', [
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'objectStoreNames',
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'mode'
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]);
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proxyMethods(Transaction, '_tx', IDBTransaction, [
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'abort'
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]);
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function UpgradeDB(db, oldVersion, transaction) {
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this._db = db;
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this.oldVersion = oldVersion;
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this.transaction = new Transaction(transaction);
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}
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UpgradeDB.prototype.createObjectStore = function() {
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return new ObjectStore(this._db.createObjectStore.apply(this._db, arguments));
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};
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proxyProperties(UpgradeDB, '_db', [
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'name',
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'version',
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'objectStoreNames'
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]);
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proxyMethods(UpgradeDB, '_db', IDBDatabase, [
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'deleteObjectStore',
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'close'
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]);
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function DB(db) {
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this._db = db;
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}
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DB.prototype.transaction = function() {
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return new Transaction(this._db.transaction.apply(this._db, arguments));
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};
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proxyProperties(DB, '_db', [
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'name',
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'version',
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'objectStoreNames'
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]);
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proxyMethods(DB, '_db', IDBDatabase, [
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'close'
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]);
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// Add cursor iterators
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// TODO: remove this once browsers do the right thing with promises
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['openCursor', 'openKeyCursor'].forEach(function(funcName) {
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[ObjectStore, Index].forEach(function(Constructor) {
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// Don't create iterateKeyCursor if openKeyCursor doesn't exist.
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if (!(funcName in Constructor.prototype)) return;
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Constructor.prototype[funcName.replace('open', 'iterate')] = function() {
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var args = toArray(arguments);
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var callback = args[args.length - 1];
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var nativeObject = this._store || this._index;
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var request = nativeObject[funcName].apply(nativeObject, args.slice(0, -1));
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request.onsuccess = function() {
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callback(request.result);
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};
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};
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});
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});
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// polyfill getAll
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[Index, ObjectStore].forEach(function(Constructor) {
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if (Constructor.prototype.getAll) return;
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Constructor.prototype.getAll = function(query, count) {
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var instance = this;
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var items = [];
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return new Promise(function(resolve) {
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instance.iterateCursor(query, function(cursor) {
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if (!cursor) {
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resolve(items);
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return;
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}
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items.push(cursor.value);
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if (count !== undefined && items.length == count) {
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resolve(items);
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return;
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}
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cursor.continue();
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});
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});
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};
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});
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function openDb(name, version, upgradeCallback) {
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var p = promisifyRequestCall(indexedDB, 'open', [name, version]);
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var request = p.request;
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if (request) {
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request.onupgradeneeded = function(event) {
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if (upgradeCallback) {
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upgradeCallback(new UpgradeDB(request.result, event.oldVersion, request.transaction));
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}
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};
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}
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return p.then(function(db) {
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return new DB(db);
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});
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}
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function deleteDb(name) {
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return promisifyRequestCall(indexedDB, 'deleteDatabase', [name]);
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}
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exports.openDb = openDb;
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exports.deleteDb = deleteDb;
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Object.defineProperty(exports, '__esModule', { value: true });
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}));
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