Delay for first retry always zero, no matter what retryDelay function... very strange.

[jeffreyhuey]

I'm using axios-retry 4.5.0. It seems no matter what retryDelay I use, linear, exponentialDelay or custom delay, the delay for the first retry is always zero (it's retried immediately after a failed http request). Code like below. Wonder if anybody else experiencing this situation? Help will be much appreciated.
// Initialize axios-retry with the axios instance
axiosRetry(axios, {
retries: 3, // Number of retry attempts
retryDelay: (retryNumber) => {return Math.pow(2, retryNumber) * 2000 },
retryCondition: (error) => {
// Retry on network errors or 5xx status codes
return axiosRetry.isNetworkError(error) || axiosRetry.isRetryableError(error);
},
onRetry: (retryCount) => {
var now = new Date();
// Extract the current time
var hours = now.getHours();
var minutes = now.getMinutes();
var seconds = now.getSeconds();
// Format the time as a string
var currentTime = ${hours}:${minutes}:${seconds};
console.log(currentTime + : retry attempt #${retryCount});
},
resetTimeout: true
});

Output of test program is like this:
22:13:6 : http get sent
22:13:6 : retry attempt #1 <----------------- First retry is immediate !!!
22:13:10 : retry attempt #2
22:13:18 : retry attempt #3
Error fetching data: