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mitt

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mitt

Tiny 200b functional Event Emitter / pubsub.


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7.1M
increased by3.07%
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1
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What is mitt?

The mitt npm package is a tiny, functional event emitter or pub/sub library that provides a way to emit and listen for events in JavaScript applications. It is designed to be simple, small, and fast, making it suitable for use in both the browser and Node.js environments.

What are mitt's main functionalities?

Event Emission

Emitting events with optional data. Listeners can subscribe to these events and react accordingly.

{"const mitt = require('mitt');\nconst emitter = mitt();\nemitter.emit('myEvent', { some: 'data' });"}

Event Listening

Subscribing to events. This allows functions to listen for specific events and execute code when those events are emitted.

{"const mitt = require('mitt');\nconst emitter = mitt();\nemitter.on('myEvent', (data) => {\n  console.log('Event received with data:', data);\n});"}

Event Unlistening

Removing event listeners. This provides a way to unsubscribe from events when a listener is no longer needed or the context changes.

{"const mitt = require('mitt');\nconst emitter = mitt();\nconst handler = (data) => {\n  console.log('Event received with data:', data);\n};\nemitter.on('myEvent', handler);\nemitter.off('myEvent', handler);"}

All Events Listening

Listening to all events. This special event type allows a listener to react to all events emitted by the emitter.

{"const mitt = require('mitt');\nconst emitter = mitt();\nemitter.on('*', (type, event) => {\n  console.log(`Type: ${type}, Event:`, event);\n});"}

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Package last updated on 04 Jul 2023

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