https://github.com/jtkdvlp/re-frame-worker-fx

A re-frame "effects handler" for performing async tasks via cljs-workers
https://github.com/jtkdvlp/re-frame-worker-fx

async re-frame thread web-worker

Last synced: 10 months ago
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A re-frame "effects handler" for performing async tasks via cljs-workers

• Host: GitHub
• URL: https://github.com/jtkdvlp/re-frame-worker-fx
• Owner: jtkDvlp
• License: mit
• Created: 2017-02-24T09:21:35.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2023-01-28T20:51:16.000Z (almost 3 years ago)
• Last Synced: 2025-02-24T06:16:41.489Z (11 months ago)
• Topics: async, re-frame, thread, web-worker
• Language: Clojure
• Homepage:
• Size: 10.7 KB
• Stars: 13
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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# Web workers effect handler for re-frame

This [re-frame](https://github.com/Day8/re-frame) library contains an [web worker](https://developer.mozilla.org/docs/Web/API/Web_Workers_API/Using_web_workers) [effect handler](https://github.com/Day8/re-frame/tree/develop/docs). The handler can be addressed by `:worker` and wraps the API of [cljs-workers](https://github.com/jtkDvlp/cljs-workers).

## Getting started

### Get it / add dependency

Add the following dependency to your `project.cljs`:


[![Clojars Project](https://img.shields.io/clojars/v/jtk-dvlp/re-frame-worker-fx.svg)](https://clojars.org/jtk-dvlp/re-frame-worker-fx)

### Usage

See the following minimal code example or the [test.cljs](https://github.com/jtkDvlp/re-frame-worker-fx/blob/master/test/re_frame_worker_fx/test.cljs). For general usage of workers see [cljs-workers](https://github.com/jtkDvlp/cljs-workers).

The following example presupposes that there is already a worker pool and registered worker-handler.

```clojure

(ns your.project

  (:require [re-frame.core :as re-frame]

            [re-frame-worker-fx.core]))

(re-frame/reg-event-fx

 :some-event

 (fn [coeffects _]

   (let [worker-pool

         (-> coeffects :db :worker-pool)]

     {:worker {:pool worker-pool

               ;; handler that will be called

               :handler :your-worker-handler

               ;; arguments applied to the handler

               :arguments {:a "Hallo Welt!" :b 10 :c (js/ArrayBuffer. 10)}

               ;; which arguments will be transfered instead of copied

               :transfer [:c]

               ;; dispatched on success conjoined with the result

               :on-success [:your-success-event]

               ;; dispatched on error conjoined with the result

               :on-error [:your-error-event]}})))

```

## Appendix

I´d be thankful to receive patches, comments and constructive criticism.

Hope the package is useful :-)