fpubsub – PubSub implementation

This is the JavaScript implementation of the PubSub pattern in JavaScript for beeing used in functional programming approach.

/** @type {fpubsubTopic<string>} */
const onexample= topic();
subscribe(onexample, console.log);
subscribe(onexample)(console.log);
subscribe(console.log)(onexample);

publish(onexample, "Publish info to `onexample` topic.");
publish.bind(null, onexample)("Publish info to `onexample` again.");
publish("Publish info to `onexample` last time.")(onexample);

Quick links

• Examples: see folder ./examples
• Guide
• Documentation (generated from TypeScript)

Guide

See Publish–subscribe pattern - Wikipedia to more information about PubSub pattern.

You can use library as regular npm package.

npm install fpubsub --save

import { topic, subscribe, publish } from "fpubsub";
/** @type {fpubsubTopic<string>} */
const onexample= topic();
subscribe(onexample, console.log);
publish(onexample, "Publish info to `onexample` topic.");

Library exports:

• functions:
  • topic: to generate event/topic
    • you can also use with options { once, cache, initial, mapper }, see in docs
    • topicFrom – see #7
  • subscribe (alias: sub): to subscribe topics
  • publish (alias: pub): to publish messages to the given topic
  • unsubscribe (alias: unsub): to remove topics listeners
  • another helpers: unsubscribeAll, has, erase, isTopic, valueOf
• types:
  • Topic: to anote you TypeScript topic
  • or fpubsubTopic: as global type for anotating topics in JavaScript (JSDoc)

…see Documentation (generated from TypeScript)

See also

• yamiteru/ueve: 🔥 Hellishly fast and 🤏 tiny async/sync event emitter
• pubsub - npm search
• emit - npm search