exponentialBackoff.js

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

const exponentialBackOff = async (func, maxRetry, delay) => {
  let res = await func();

  if (res) {
    return res;
  }

  console.log(`retrying, maxRetry ${maxRetry}`);

  if (0 < maxRetry) {
    await sleep(delay);
    return await exponentialBackOff(func, --maxRetry, delay * 2);
  }

  console.error('func call failed');

  return null;
}

// try funcToRun 20 times max, start with 500ms delay in the first fail
const status = await exponentialBackOff(funcToRun, 20, 500);