https://github.com/molvqingtai/event-hub

🚌 This is a minimalist event hub.
https://github.com/molvqingtai/event-hub

emit event event-bus events

Last synced: about 1 year ago
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🚌 This is a minimalist event hub.

• Host: GitHub
• URL: https://github.com/molvqingtai/event-hub
• Owner: molvqingtai
• License: mit
• Created: 2021-05-17T18:04:34.000Z (about 5 years ago)
• Default Branch: main
• Last Pushed: 2023-05-22T14:59:48.000Z (about 3 years ago)
• Last Synced: 2025-02-27T05:02:05.834Z (over 1 year ago)
• Topics: emit, event, event-bus, events
• Language: TypeScript
• Homepage:
• Size: 707 KB
• Stars: 13
• Watchers: 2
• Forks: 7
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

          
# EventHub

[![version](https://img.shields.io/github/v/release/molvqingtai/event-hub)](https://www.npmjs.com/package/@resreq/event-hub) [![deno land](http://img.shields.io/badge/available%20on-deno.land/x-lightgrey.svg?logo=deno&labelColor=black&color=blue)](https://deno.land/x/event_hub) [![download](https://img.shields.io/npm/dt/@resreq/event-hub)](https://www.npmjs.com/package/@resreq/event-hub) [![JavaScript Style Guide](https://img.shields.io/badge/code_style-standard-brightgreen.svg)](https://standardjs.com)

🚌 This is a minimalist event hub.

## Install

```shell

npm i @resreq/event-hub

```

**or**

```shell

yarn add @resreq/event-hub

```

**If you use the [Deno](https://deno.land/)**

Please add to `import_map.json`.

```js

import EventHub from 'https://esm.sh/@resreq/event-hub'

```

## Documentation

### Get Started

```js

import EventHub from '@resreq/event-hub'

const hub = new EventHub()

hub.on('custom-send', (message) => {

  console.log(message) // => Hello, EventHub!

})

hub.emit('custom-send', 'Hello, EventHub!')

```

### Instance Methods

**Event**

Event name type.

```typescript

type Event = string | symbol

```

#### on(event,handler)

- **Arguments:**

  - `{Event | Event[]} event`

  - `{Function} handler`

* **Usage:**

  Listen for a custom event on the current Instance. Events can be triggered by `instance.emit`. The handler will receive all the additional arguments passed into these event-triggering methods.

#### once(event,handler)

- **Arguments:**

  - `{Event} event`

  - `{Function} handler`

* **Usage:**

  Listen for a custom event, but only once. The listener will be removed once it triggers for the first time.

#### off([event,handler])

- **Arguments:**

  - `{Event | Event[]} event`

  - `{Function} [handler]`

* **Usage:**

  Remove custom event listener(s).

  - If no arguments are provided, remove all event listeners;

  - If only the event is provided, remove all listeners for that event;

  - If both event and handler are given, remove the listener for that specific handler only.

#### emit(event,...args)

- **Arguments:**

  - `{Event} event`

  - `{any} ...args`

* **Usage:**

  Trigger an event on the current instance. Any additional arguments will be passed into the listener’s handler function.

## License

This project is licensed under the MIT License - see the [LICENSE](https://github.com/molvqingtai/event-hub/blob/main/LICENSE) file for details