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@vwp/promise-queuer

v0.2.0

Published

A package to manage promises in a queue

Downloads

10

Readme

A package to manage promises in a queue

Homepage

Install

yarn add @vwp/promise-queuer

Usage

This package works with an array of objects that's consumed in a promise. To create a queue, you need to define one type T of objects in PromiseQueuer.factory

Example:

  interface PromiseObject {
    value: number;
  }
  const queuer = PromiseQueuer.factory<PromiseObject>()

The queue has some default properties:

  • debugStatus: false
    • When true, will enable debug mode, with some console.log that will help you to understand the complete flow of promise-queuer
  • maxAttempts: 5
    • Max times a promise will repeat if fail in queue
  • timeout: 1500
    • Timeout in milliseconds, when the promise overtime it, it will be rejected

If you want to override, call the factory like this:

 interface PromiseObject {
   value: number;
 }
 /* 
 PromiseQueuer.factory<T>(
   debugStatus: boolean, 
   maxAttempts: number, 
   timeout: number
 )
 */
 const queuer = PromiseQueuer.factory<PromiseObject>(true, 10, 5000)

Now you can add objects of type T to the queue

Example:

  const firstObject: PromiseObject = { value: 1 };
  const secondObject: PromiseObject = { value: 2 };

  queuer.addToQueue(firstObject);
  queuer.addToQueue(secondObject);

To run the queuer, just call the method runQueue passing the Promise that will consume objects of type T

Example:

  const resolver = (object: PromiseQueuer) => new Promise(
    (resolve, reject) => setTimeout(() => resolve(object.value)
  , 1500)

  queuer.runQueue(resolver);

The method runQueue have another two optional parameters:

  • callback: (params: any) : Promise<any> | any
    • Callback function when PromiseObject is resolved
  • calbackError: (params: any) : Promise<any> | any
    • Callback function when PromiseObject is rejected and dont have more attempts

Example:

  const resolver = (object: PromiseQueuer) => new Promise(
    (resolve, reject) => setTimeout(() => resolve(object.value)
  , 1500);

  const callback = (result) => console.log('Callback result:', result);

  const callbackError = (result) => console.log('Callback error result:', result);

  queuer.runQueue(resolver, callback, callbackError);

Authors

João Victor Visoná de Oliveira

Eduardo Santos de Brito

Contributing

Contributions, issues and feature requests are welcome!Feel free to check issues page.

Show your support

Give a ⭐️ if this project helped you!

License

Copyright © 2019 João Victor Visoná de Oliveira AND Eduardo Santos de Brito. This project is MIT licensed.


This README was generated with ❤️ by readme-md-generator