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event-emitter

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event-emitter

Environment agnostic event emitter

  • 0.3.5
  • latest
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  • npm
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increased by8.36%
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What is event-emitter?

The event-emitter npm package is a lightweight and flexible library for managing events in JavaScript. It allows you to create, listen to, and emit events, making it easier to handle asynchronous operations and decouple different parts of your application.

What are event-emitter's main functionalities?

Creating an Event Emitter

This feature allows you to create a new event emitter instance. The instance can be used to manage events within your application.

const EventEmitter = require('event-emitter');
const emitter = EventEmitter();

Listening to Events

This feature allows you to listen for specific events. When the event is emitted, the provided callback function is executed.

emitter.on('event', function(data) {
  console.log('Event received:', data);
});

Emitting Events

This feature allows you to emit events. When an event is emitted, all listeners for that event are called with the provided data.

emitter.emit('event', { key: 'value' });

Removing Event Listeners

This feature allows you to remove specific event listeners. This is useful for cleaning up and preventing memory leaks.

const callback = function(data) {
  console.log('Event received:', data);
};
emitter.on('event', callback);
emitter.off('event', callback);

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Package last updated on 15 Mar 2017

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