// Filter Transfer events to specific address
const filter: LogFilter = {
  fromBlock: "latest",
  address: contractAddr,
  topics: [transferEventSig, null, recipientHash]
};

// Filter by specific block hash
const filter2: LogFilter = {
  blockhash: blockHash,
  address: contractAddr
};

import * as LogFilter from './primitives/LogFilter/index.js';
import * as Address from './primitives/Address/index.js';
import * as BlockNumber from './primitives/BlockNumber/index.js';

// Filter by address and block range
const filter = LogFilter.from({
  fromBlock: BlockNumber.from(1000000),
  toBlock: "latest",
  address: Address.from("0x...")
});

// Filter by specific block hash
const filter2 = LogFilter.from({
  blockhash: Hash.from("0x..."),
  address: Address.from("0x...")
});

import * as LogFilter from './primitives/LogFilter/index.js';
const empty = LogFilter.isEmpty(filter); // true if no criteria

import * as LogFilter from './primitives/LogFilter/index.js';
const matches = LogFilter.matches(filter, log);