import React from 'react';

<ReactPolling
  url={'url to poll'}
  interval= {3000} // in milliseconds(ms)
  retryCount={3} // this is optional
  onSuccess={() => console.log('handle success')}
  onFailure={() => console.log('handle failure')} // this is optional
  method={'GET'}
  headers={headers object} // this is optional
  body={JSON.stringify(data)} // data to send in a post call. Should be stringified always
  render={({ startPolling, stopPolling, isPolling }) => {
    if(isPolling) {
      return (
        <div> Hello I am polling</div>
      );
    } else {
      return (
        <div> Hello I stopped polling</div>
      );
    }
  }}
/>

import React from 'react';
// import of some lib for making http calls
// let's say you are using axios
import axios from "axios";

const fetchData = () => {
  // return a promise
  return axios.get("some polling url");
}

const App = () => {
  return (
    <ReactPolling
      url={'url to poll'}
      interval= {3000} // in milliseconds(ms)
      retryCount={3} // this is optional
      onSuccess={() => console.log('handle success')}
      onFailure={() => console.log('handle failure')} // this is optional
      promise={fetchData} // custom api calling function that should return a promise
      render={({ startPolling, stopPolling, isPolling }) => {
        if(isPolling) {
          return (
            <div> Hello I am polling</div>
          );
        } else {
          return (
            <div> Hello I stopped polling</div>
          );
        }
      }}
    />
  );
}

function onSuccess(response) {
  // You can do anything with this response, may be add to an array of some state of your react component
  // return true to continue polling
  // return false to stop polling
}

function onFailure(error) {
  // You can log this error to some logging service
  // clean up some state and variables.
}

function fetchPosts() {
  return axios.get("some url");
}