browser-level

import { BrowserLevel } from 'browser-level'; import type { BatchOperation } from 'abstract-level'; async function runDbExample() { // Create a database called 'example' with JSON encoding const db = new BrowserLevel('example', { valueEncoding: 'json' }); // Ensure the database is opened before operations await db.open(); try { // Add an entry with key 'a' and value 1 await db.put('a', 1); console.log('Put key 'a':', await db.get('a')); // Add multiple entries using batch const batchOperations: BatchOperation<string, number>[] = [ { type: 'put', key: 'b', value: 2 }, { type: 'put', key: 'c', value: 3 } ]; await db.batch(batchOperations); console.log('Batch operations completed.'); // Get value of key 'b' const valueB = await db.get('b'); console.log('Value of key 'b':', valueB); // Expected: 2 // Iterate entries with keys that are greater than 'a' console.log('Iterating entries > 'a':'); for await (const [key, value] of db.iterator({ gt: 'a' })) { console.log(` Key: ${key}, Value: ${value}`); } // Expected: b, 2 and c, 3 } catch (error) { console.error('Database operation failed:', error); } finally { // Always close the database when done await db.close(); console.log('Database closed.'); } } runDbExample();