Developing a Global Vue 3 Plugin for Custom Functionality

// my-plugin.js
import GlobalGreeting from './GlobalGreeting.vue'; // A simple component to register globally

const MyAwesomePlugin = {
  install(app, options) {
    // 1. Add a global method or property
    app.config.globalProperties.$myGlobalLogger = (message) => {
      console.log(`[MY GLOBAL LOGGER] ${message}`, options.prefix || '');
    };

    // 2. Register a global component
    app.component('GlobalGreeting', GlobalGreeting);

    // 3. Provide/inject (if needed for components, but provide/inject is forbidden as a primary topic)
    // app.provide('my-plugin-settings', options);
  }
};

export default MyAwesomePlugin;

// Usage in main.js:
// import { createApp } from 'vue';
// import App from './App.vue';
// import MyAwesomePlugin from './my-plugin.js';

// const app = createApp(App);

// app.use(MyAwesomePlugin, { prefix: 'App Log' }); // Pass options to the plugin

// app.mount('#app');

// Example GlobalGreeting.vue (a simple component to be registered globally)
// <template>
//   <div class="global-greeting">
//     <h3>Hello from a Global Component!</h3>
//     <p>This component was registered via a Vue plugin.</p>
//   </div>
// </template>
// <script setup></script>
// <style scoped>
// .global-greeting { border: 1px dashed #42b983; padding: 10px; margin-top: 15px; background-color: #e6ffed; }
// </style>

// Usage in any component after plugin installation:
// <template>
//   <div>
//     <button @click="logMessage">Log Something</button>
//     <GlobalGreeting />
//   </div>
// </template>

// <script setup>
// import { getCurrentInstance } from 'vue';

// const { proxy } = getCurrentInstance();

// const logMessage = () => {
//   proxy.$myGlobalLogger('Button clicked!');
// };
// </script>