query3

Query3.js

Query3 is a javascript library for storing smart contract events locally and do complex queries, like sorting, conditions and more.

Example

const query3 = new Query3(
    erc20Address,
    erc20Abi,
    ['Transfer', 'Approve'],
    new InfuraProvider('mainnet', infuraApiKey),
    startBlock
);
await query3.sync();
const events = await query3.getEvents('Transfer');

Complex queries

const query3 = new Query3(
    erc20Address,
    erc20Abi,
    ['Transfer', 'Approve'],
    new InfuraProvider('mainnet', infuraApiKey)
);
await query3.sync();
const limit = 100;
const offset = 0;
const orderBy: OrderBy = {
    field: 'value',
    strategy: 'DESC'
};
const conditions: WhereCondition[] = [
    {
        key: 'from',
        value: '0x000',
        comparator: '='
    }
];
const events = await query3.getEvents(
    'Transfer', 
    conditions,
    orderBy,
    limit,
    offset
);

Full Config

const query3 = new Query3(
    address,
    abi,
    ['Transfer'],
    new RpcProvider('https://mainnet.infura.io/v3/9aa3d95b3bc440fa88ea12eaa4456161'),
    startBlock,
    new StandardEventParser(abi),
    new IndexedDb("IndexedDb")
)

Stay in touch

• Author - Nytyr