getAllFromIndexedDB

1/**
2 * Retrieves all records from an object store in IndexedDB.
3 *
4 * @param db - The open IDBDatabase instance.
5 * @param storeName - The name of the object store.
6 * @returns A Promise that resolves with an array of all records in the store.
7 */
8export function getAllFromIndexedDB<T = any>(
9  db: IDBDatabase,
10  storeName: string
11): Promise<T[]> {
12  return new Promise((resolve, reject) => {
13    const transaction = db.transaction([storeName], 'readonly');
14    const store = transaction.objectStore(storeName);
15    const request = store.getAll();
16
17    request.onsuccess = () => resolve(request.result);
18    request.onerror = () => reject(request.error);
19  });
20}

1import { openIndexedDB } from './openIndexedDB';
2import { addToIndexedDB } from './addToIndexedDB';
3
4test('getAllFromIndexedDB - retrieves all records from store', async () => {
5  const db = await openIndexedDB('TestDB_GetAll', 1, {
6    upgrade(db) {
7      if (!db.objectStoreNames.contains('items')) {
8        db.createObjectStore('items', { keyPath: 'id' });
9      }
10    }
11  });
12
13  await addToIndexedDB(db, 'items', { id: 1, name: 'Alpha' });
14  await addToIndexedDB(db, 'items', { id: 2, name: 'Beta' });
15
16  const records = await getAllFromIndexedDB(db, 'items');
17
18  expect(records).toEqual([
19    { id: 1, name: 'Alpha' },
20    { id: 2, name: 'Beta' }
21  ]);
22
23  db.close();
24});
25
26test('getAllFromIndexedDB - returns empty array if store is empty', async () => {
27  const db = await openIndexedDB('TestDB_GetAllEmpty', 1, {
28    upgrade(db) {
29      db.createObjectStore('emptyStore', { keyPath: 'id' });
30    }
31  });
32
33  const records = await getAllFromIndexedDB(db, 'emptyStore');
34  expect(records).toEqual([]);
35
36  db.close();
37});