notifyOn フィルタリング

import { subscribe, CommitmentLevel, LaserstreamConfig, SubscribeRequest } from 'helius-laserstream';

const subscriptionRequest: SubscribeRequest = {
  accounts: {
    "write-only": {
      account: ['<ACCOUNT_PUBKEY>'],
      owner: [],
      filters: [],
      notifyOn: 'write' // skip no-op updates
    }
  },
  commitment: CommitmentLevel.CONFIRMED,
  transactions: {}, slots: {}, transactionsStatus: {},
  blocks: {}, blocksMeta: {}, entry: {}, accountsDataSlice: [],
};

const config: LaserstreamConfig = {
  apiKey: 'YOUR_API_KEY',
  endpoint: 'https://laserstream-mainnet-ewr.helius-rpc.com',
};

await subscribe(config, subscriptionRequest, async (data) => {
  if (data.account) console.log(data.account);
}, async (error) => {
  console.error('Stream error:', error);
});