'operation.attempt' callback gets executed more than once with same 'attempt' number about node-retry HOT 7 CLOSED

const maxAttempts = 3;
let attempt = 1;
while (attempt <= maxAttempts) {
  try {
    console.log(`doing ${attempt}: ${command}`);
    const execResult = await execPromise(command);
    // Do something with execResult
    cosole.log(execResult)
    break;
  } catch (e) {
    this.log.error(e);
    // Sleep using linear backoff strategy (5s after first attempt, 10s after second attempt)
    if (attempt < maxAttempt) {
      await new Promise(resolve => setTimeout(resolve, 5000 * attempt));
    }
    attempt += 1;
  }
}

const retry = require("retry");

const sleep = timeout =>
    new Promise(resolve => setTimeout(resolve, timeout));

function log(msg) {
    console.log(`${new Date().toLocaleString()}: ${msg}`);
}

async function asyncThrow() {
    await sleep(1000);
    throw 'whoops';
}

const operation = retry.operation({
    retries: 3,
    factor: 2,
    maxTimeout: 10000,
    randomize: true
});
operation.attempt(async (attemptNumber) => {
    try {
        log(`attemptNumber = ${attemptNumber} - calling asyncThrow`);
        await asyncThrow();
    }
    catch(err) {
        if (operation.retry(err)) {
            log('retrying.');
        } else {
            log('giving up.');
        }
    }
});