Nuxt-mitter

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Nuxt module for mitt library - enable fully typed events and autocompletion

👏 Credits to developit author of the mitt library

• ✨ Release notes
• 🏀 Online stackblitz playground

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Features

• ✅  Nuxt 3 support
• 🤞  Easy to use composable
• 🔌  auto-import - mitt provided by plugin
• ♻️  Optimized with Vue/Nuxt Lifecycle hooks

📦 Install

Install nuxt-mitter as dependency:

    npm install nuxt-mitter

Add it to the modules section of your nuxt.config.{ts|js}:

    modules: ['nuxt-mitter']

⚠️ Optional - but strongly recommended

Provide your event.d.ts file with type MitterEvents:

export type MitterEvents = {
  foo: string
  bar?: string
}

Important

❗  Name of type must be MitterEvents

🚧  Improvements coming soon...

---

Add mitt key to your nuxt.config.{ts|js} and provide path to types

    mitt: {
        types: '...'   //your path './types/eventTypes.d.ts'
    }

🏁 That's it! You can now use My Module in your Nuxt app

🚀 Examples

Fire an event with the composable useMitter

<!--SayHello.vue-->
<script setup lang="ts">
  const { emit } = useMitter()
  const onClick = () => {
    emit('hello', 'Hello 🫠🖖')
  }
</script>

<template>
  <button @click="onClick">
    Say Hello
  </button>
</template>

Listen to an event with the composable useMitter

<!--SomeWhereInTheComponentTree.vue-->
<script setup>
const { listen } = useMitter()

listen('hello', e => alert(e))
</script>

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Types

export type EmitFunction = <K extends keyof MitterEvents>(event: K, payload?: MitterEvents[K]) => void

export type EventHandlerFunction = <K extends keyof MitterEvents>(
  event: K,
  handler: (payload: MitterEvents[K]) => void
) => void

export type ListenFunction = <K extends keyof MitterEvents>(
  event: K,
  handler: (payload: MitterEvents[K]) => void
) => void

export interface UseMitterReturn {
  /**
   * Emits an event with an optional payload.
   * @param event The event name to emit.
   * @param payload Optional payload for the event.
   */
  emit: EmitFunction

  /**
   * Registers an event handler.
   * @param event The event name to listen for.
   * @param handler The function to call when the event is emitted.
   */
  on: EventHandlerFunction

  /**
   * Unregisters an event handler.
   * @param event The event name to stop listening for.
   * @param handler The function to remove from the event listeners.
   */
  off: EventHandlerFunction

  /**
   * Registers an event handler and automatically removes it when the component is unmounted.
   * @param event The event name to listen for.
   * @param handler The function to call when the event is emitted.
   */
  listen: ListenFunction
}

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• Name: Nuxt-Mitter
• Package name: Nuxt-mitter
• Author: Gianluca Zicca
• Github: gianlucazicca
• Description: Nuxt module for mitt enable fully typed events and autocompletion

Contribution

Local development

# Install dependencies
npm install

# Generate type stubs
npm run dev:prepare

# Develop with the playground
npm run dev

# Build the playground
npm run dev:build

# Run ESLint
npm run lint

# Run Vitest
npm run test
npm run test:watch

# Release new version
npm run release