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https://github.com/vesparny/brcast

Tiny data broadcaster with 0 dependencies
https://github.com/vesparny/brcast

broadcast data emitter event pubsub

Last synced: 2 days ago
JSON representation

Tiny data broadcaster with 0 dependencies

Host: GitHub
URL: https://github.com/vesparny/brcast
Owner: vesparny
License: mit
Created: 2017-04-07T12:02:09.000Z (over 7 years ago)
Default Branch: master
Last Pushed: 2023-04-18T09:37:39.000Z (over 1 year ago)
Last Synced: 2024-09-19T13:08:26.401Z (14 days ago)
Topics: broadcast, data, emitter, event, pubsub
Language: JavaScript
Homepage:
Size: 333 KB
Stars: 47
Watchers: 2
Forks: 2
Open Issues: 4
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE

Awesome Lists containing this project

README

        # Brcast

> Tiny data broadcaster with 0 dependencies

[![Travis](https://img.shields.io/travis/vesparny/brcast.svg)](https://travis-ci.org/vesparny/brcast)

[![Code Coverage](https://img.shields.io/codecov/c/github/vesparny/brcast.svg?style=flat-square)](https://codecov.io/github/vesparny/brcast)

[![David](https://img.shields.io/david/vesparny/brcast.svg)](https://david-dm.org/vesparny/brcast)

[![npm](https://img.shields.io/npm/v/brcast.svg)](https://www.npmjs.com/package/brcast)

[![npm](https://img.shields.io/npm/dm/brcast.svg)](https://npm-stat.com/charts.html?package=brcast&from=2017-04-01)

[![JavaScript Style Guide](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](http://standardjs.com/)

[![MIT License](https://img.shields.io/npm/l/brcast.svg?style=flat-square)](https://github.com/vesparny/brcast/blob/master/LICENSE)

The current size of `brcast/dist/brcast.umd.min.js` is:

[![gzip size](http://img.badgesize.io/https://unpkg.com/brcast/dist/brcast.umd.min.js?compression=gzip&label=gzip%20size&style=flat-square)](https://unpkg.com/brcast/dist/)

It's like a data store you can subscribe to, with a setter to pump data in.

For browsers and node.

## Table of Contents

-   [Install](#install)

-   [Usage](#usage)

-   [API](#api)

-   [Testing](#tests)

-   [License](#license)

## Install

This project uses [node](http://nodejs.org) and [npm](https://npmjs.com). Go check them out if you don't have them locally installed.

```sh

$ npm install --save brcast

```

Then with a module bundler like [rollup](http://rollupjs.org/) or [webpack](https://webpack.js.org/), use as you would anything else:

```javascript

// using ES6 modules

import brcast from 'brcast'

// using CommonJS modules

var brcast = require('brcast')

```

The [UMD](https://github.com/umdjs/umd) build is also available on [unpkg](https://unpkg.com):

```html

```

You can find the library on `window.brcast`.

## Usage

```js

import brcast from 'brcast'

let broadcast = brcast()

// subscribe

const subscriptionId = broadcast.subscribe(state => console.log(state))

// setState sets the state and invoke all subscription callbacks passing in the state

broadcast.setState(1)

// setState returns the current state

broadcast.getState()

// unsubscribe to unbind the handler

broadcast.unsubscribe(subscriptionId)

```

## API

### `brcast([initialState])`

Creates a `broadcast` object.

#### Arguments

1 - [`initialState`] *(any)*: The initial state.

#### Returns

(`broadcast`): An object that holds the state.

### `broadcast.setState(state)`

Store the new state.

#### Arguments

1 - `state` *(any)*: The new state.

#### Returns

Nothing.

### `broadcast.getState()`

Get the stored state.

#### Returns

(`Any`): The stored state.

### `broadcast.subscribe(handler)`

Subscribe to state changes.

#### Arguments

1 - `handler` *(Function)*: The callback to be invoked any time the state changes.

#### Returns

(`Number`): The subscription id to be used to unsubscribe.

### `broadcast.unsubscribe(subscriptionId)`

Unsubscribe the change listener.

#### Arguments

1 - `subscriptionId` *(Number)*: The subscription id returned by subscribing.

#### Returns

Nothing.

## Tests

```sh

$ npm run test

```

[MIT License](LICENSE.md) © [Alessandro Arnodo](https://alessandro.arnodo.net/)