# on-object

> Register many EventEmitter listeners at once using objects

Latest version **1.0.0** (published 2016-09-13) · MIT license · 0 weekly downloads

## Install

```sh
npm install on-object
pnpm add on-object
yarn add on-object
bun add on-object
```

## Health

**Score 15/100 (F)** — status: abandoned.

Positive: no vulnerabilities.

Warnings: low downloads; no types; no esm support.

Negative: abandoned; low maintenance score.

## Facts

| | |
|---|---|
| Version | 1.0.0 |
| Published | 2016-09-13 |
| First published | 2016-09-13 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | none |
| Module format | CommonJS |
| Dependencies | 1 |
| Known vulnerabilities | 0 |
| Install scripts | no |
| Author | Matt Bell |
| Maintainers | mappum |

## Links

- npm: https://www.npmjs.com/package/on-object
- npm.io page: https://npm.io/package/on-object

## Dependencies (1)

- [event-cleanup](https://npm.io/package/event-cleanup.md) ^1.0.3

## Recent versions

- 1.0.0 (latest) — 2016-09-13
- 0.0.0 — 2016-09-13

## README

# on-object

[![npm version](https://img.shields.io/npm/v/on-object.svg)](https://www.npmjs.com/package/on-object)
[![Build Status](https://travis-ci.org/mappum/on-object.svg?branch=master)](https://travis-ci.org/mappum/on-object)
[![Dependency Status](https://david-dm.org/mappum/on-object.svg)](https://david-dm.org/mappum/on-object)

**Register many EventEmitter listeners at once using objects**

## Usage

`npm install on-object`

```js
var EventEmitter = require('on-object')
var emitter = new EventEmitter()

emitter.on({
  foo: function () {
    console.log('foo event emitted')
  },
  bar: function () {
    console.log('bar event emitted')
  }
})
emitter.once({ ... })
emitter.removeListener({ ... })
```

### Instantiation

You can just use this module as a replacement for the `EventEmitter` class in the `events` module:

```js
var EventEmitter = require('on-object')
var emitter = new EventEmitter()
```

You can also use it to wrap the methods of a pre-existing `EventEmitter`:

```js
var EventEmitter = require('events')
var onObject = require('on-object')

var emitter = onObject(new EventEmitter())
```

## Rationale

This module is useful when you find yourself registering many event listeners at once and want the syntax to look a little less noisy.

For example, you might write something like this using the original API:
```js
emitter.on('foo', function () {
  console.log('foo')
})
emitter.on('bar', function () {
  console.log('bar')
})
emitter.on('bar2', function () {
  console.log('bar2')
})
```

This module will let you do this:
```js
emitter.on({
  foo: function () {
    console.log('bar')
  },
  bar: function () {
    console.log('bar')
  },
  bar2: function () {
    console.log('bar2')
  }
})
```

Also, you can make it look especially nice with the ES6 object method syntax:
```js
emitter.on({
  foo () {
    console.log('bar')
  },
  bar () {
    console.log('bar')
  },
  bar2 () {
    console.log('bar2')
  }
})
```

---
_Source: https://npm.io/package/on-object · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._