zero_copy.ts

import fetch, { Response } from "node-fetch";
import { Connection, LAMPORTS_PER_SOL, PublicKey } from "@solana/web3.js";

async function loadZeroCopyResult(
  con: Connection,
  addr: PublicKey
): Promise<any> {
  const data = (await con.getAccountInfo(addr))!.data;
  let offset = 0;
  const dicsriminator = data[0];
  offset += 1;
  const parent = new PublicKey(data.subarray(offset, offset + 32));
  offset += 32;
  const numSuccess = data.readInt32LE(offset);
  offset += 4;
  const numError = data.readInt32LE(offset);
  offset += 4;
  const result = data.readDoubleLE(offset);
  offset += 8;
  const roundOpenSlot = data.readBigUInt64LE(offset);
  offset += 8;
  const roundOpenTimestamp = data.readBigInt64LE(offset);
  offset += 8;
  const minResponse = data.readDoubleLE(offset);
  offset += 8;
  const maxResponse = data.readDoubleLE(offset);
  return {
    dicsriminator,
    parent,
    numSuccess,
    numError,
    result,
    roundOpenSlot,
    roundOpenTimestamp,
    minResponse,
    maxResponse,
  };
}

(async function main() {
  const connection = new Connection("https://api.mainnet-beta.solana.com");
  const poa = new PublicKey("3HtmwdXJPAdMZ73fTGeCFgbDQZGLZWpmsm3JAB5quGJN");
  const data = await loadZeroCopyResult(connection, poa);
  console.log(data);
})();