tenacious-fetch

Tiny fetch API wrapper to add support for retries with linear & exponential backoff and timeouts

Table of Contents

• tenacious-fetch
  • Table of Contents
  • Install
  • Usage
  • Contribute
  • License

Install

This project uses node and npm.

$ npm install tenacious-fetch
$ # OR
$ yarn add tenacious-fetch

Usage

import tenaciousFetch from 'tenacious-fetch'

const url = 'https://jsonplaceholder.typicode.com/posts/1'
const normalFetchConfig = {
    method: 'GET',
    headers: {
      "Content-Type": "application/json charset=UTF-8"
    },
    // Others...
}

const additionalTenaciousFetchConfig = {
    fetcher: window.fetch,      // Fetch implementation to use, default is window.fetch
    retries: 3,                 // Number of retries, default is 1
    retryDelay: 1000 * 3,       // Delay in ms before retrying, default is 1000ms
    onRetry: ({retriesLeft, retryDelay, response}) => console.log(retriesLeft, retryDelay, response),
    retryStatus = [],           // Status codes of response that should trigger retry e.g. [500, 404] or just "500". 
                                // defaults to empty array
    retryOnFatalError = true    // If there a fatal request (no response status), we can choose
                                // to retry or not
    timeout = 1000 * 15,        // Timeout in ms before throwing a timeout error for the request.
                                // Defaults to no timeout (undefined).
    factor: .5                  // If factor is given, exponential backoff will be performed for retries, otherwise
                                // linear backoff is used  
}

const config = Object.assign({}, normalFetchConfig, additionalTenaciousFetchConfig)

tenaciousFetch(url, config).then(console.log).catch(console.error)

Contribute

1. Fork it and create your feature branch: git checkout -b my-new-feature
2. Commit your changes: git commit -am 'Add some feature'
3. Push to the branch: git push origin my-new-feature
4. Submit a pull request

License

MIT