Nader-Sl

import PromiseInsist from '..';

class GoodluckError extends Error {
  constructor(msg: string, errorCode: number) {
    super(msg);
    this.errorCode = errorCode;
    Object.setPrototypeOf(this, GoodluckError.prototype);
  }
  private errorCode: number;
  public getErrorCode() {

Nader-Sl

Attempt #29 done in 0 ms
Retrying t1 after 2000 ms
Attempt #28 done in 0 ms
Retrying t1 after 2000 ms
Attempt #27 done in 0 ms
Retrying t1 after 2000 ms
Canceled task of ID : t1 (~ 4556 ms)
Retrying t2 after 2000 ms
t1: Error: Random magic number wasn't guessed.
Retrying t2 after 2000 ms

Nader-Sl

import PromiseInsist, { Delays, ErrorFilters } from 'promise-insist';
import axios from 'axios';

// A preset of Delays error filters.
const { ExponentialDelay } = Delays;
//A Preset of Axios error filters.
const { isRetryable, isServerError, isNetError, isSafe, isIdempotent } = ErrorFilters.AxiosErrorFilters;

//Create an Axios PromiseInsist instance with 20 retries per request , exponential delay and only retry if error is a server error.
const {

Nader-Sl

npm i promise-insist --save

Nader-Sl

import PromiseInsist, { Delays, ErrorFilters } from '.';
import axios from 'axios';
// A preset of Delays error filters.
const { ExponentialDelay } = Delays;
//A Preset of Axios error filters.
const { isRetryable, isServerError, isNetError, isSafe, isIdempotent } = ErrorFilters.AxiosErrorFilters;
const {
  insist,
  cancelInsist
} = new PromiseInsist({ retries: 20, delay: ExponentialDelay(), errorFilter: (isRetryable) })

Nader-Sl

async function runTest() {
  try {
   const resp = await insist(() => axios.get('http://localhost:1337'))
   console.log(resp) // We got it!
  } catch (err) { console.log(err); } //error thrown after all retries been consumed.
}

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async function runTest() {
  try {
    insist(
      () => axios.get('http://localhost:1337'),
      //onRetry callback with current attempt count and timeconsumed per this task passed.
      (attemptCount, timeConsumed) => { console.log(`Attempt #${attemptCount} done in ${timeConsumed} ms`); },
      {// Specify custome config per this insist
        delay: 2000,
        retries: 10,
        errorFilter: isServerError

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 async function runCancelTest() {
    try {
      const task = insist(() => axios.get('http://localhost:1337'));
      setTimeout(() => cancelInsist(task), 2000); //cancel task after 2 seconds
      const resp = await task; //this awaited task shall complete in 2 seconds if it was still retrying
    } catch (err) { console.log(err); }
  }

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 async function runReplaceTaskTest() {
    try {
      const task = insist(() => axios.get('http://localhost:1337'));
      setTimeout(() => replaceTask(task,() => axios.get('http://api.someSite.com')), 2000); 
      const resp = await task;
    } catch (err) { console.log(err); }
  }

Nader-Sl

Keybase proof

I hereby claim:

• I am nadersl on github.
• I am nedsl (https://keybase.io/nedsl) on keybase.
• I have a public key ASA32BJXSbCaRrpssslIKdootbi5-_GPguOq9uIU9LcQXAo

To claim this, I am signing this object: