modules questions

Lazy loading in Angular is implemented by configuring the router to load feature modules only when they are required. This is achieved by using the `loadChildren` property in route configurations, which specifies the module to be loaded dynamically. Feature modules are defined with their own routing configuration, and Angular's router handles loading these modules on demand. This approach improves application performance by reducing the initial load time and only fetching the necessary modules when a user navigates to a specific route. Lazy loading is especially useful for large applications with multiple modules and routes.

Handling background tasks in React Native typically involves using libraries like `react-native-background-task` or `react-native-background-fetch`. These libraries allow you to perform tasks such as data synchronization or location updates while the app is in the background. For more advanced use cases, you might need to write custom native code to integrate with background services on iOS or Android.

ES modules allow you to use JavaScript's import/export syntax in Node.js. Example: In an ES module, you can import another module using 'import { func } from './module.js';' instead of using 'require'. Node.js supports ES modules natively from version 12 onwards.