findAccountNumber.js

const findAccountNumber = () => {
  const accountNumber = `EV${_.padStart(_.random(1000000, 999999), 6, '0')}`;
  return $fluro.api
    .post("/content/financialDetail/filter", {
      filter: {
        operator: "and",
        filters: [
          {
            operator: "and",
            filters: [
              {
                comparator: "==",
                key: "data.accountNumber",
                value: accountNumber,
              },
            ],
          },
        ],
      },
    })
    .then((res) => {
      if (res.data.length === 0) {
        return setAccountNumber(accountNumber);
      } else {
        return findAccountNumber();
      }
    })
    .catch(done);
};

return findAccountNumber();