- duration: number
// miliseconds

- duration?: number
// milliseconds
- timeoutMsg?: string
// custom error message returns from reject

- retries?: number
// Number of retry times

- timeout?: number
 // define timeout for each promsie

- retryIf?: (err: any, retriedTimes: number) => boolean;
// only retry when this return true

- retryUntil?: (err: any, count: number) => boolean;
// stop retry when this return true

-  delay?: number | ((count: number) => number);
// A number or function that returns how long it should wait before next retry. `count` is the number of times it's been retried

delay?: number | ((count: number) => number);
// delay between each promise execution
onEachStart?: (index: number) => void;
// called when each promise is executed
onEachEnd?: (index: number) => void;
// calle when each promise is resolved
stopOnReject?: boolean;
// If a promise is rejected, then stop the flow
waterFall?: boolean;
// If waterFall is true, then the current promise will receive resolved result from last promise as input

size?: number;
delay?: number | ((count: number) => number);
onBatchStart?: (index: number) => void;
onBatchEnd?: (index: number) => void;
stopOnReject?: boolean;
waterFall?: boolean;
waterFallInitialValue?: any;

concurrency?: number;
// Number of concurrent promises running
timeout?: number;
// timeout for each promise
retries?: number;
// default is 0
stopOnReject?: boolean;