JavaScript Modules (import/export)

What module design pattern is shown here?

// lib.js
export function helper() {}
export const version = '1.0.0';

// index.js
export { helper, version } from './lib.js';
export * from './utils.js';

Module bundling
Barrel pattern
This code demonstrates the 'barrel' pattern: 1) It creates a single entry point that re-exports from multiple modules, 2) It simplifies import statements in consuming code by providing a single import location, 3) It helps abstract away internal module structure from consumers, 4) It allows for better organization of related modules, 5) It makes it easier to refactor internal module structure without affecting consumers, 6) It's commonly used in library and framework development to provide a clean public API, 7) It supports both selective re-exports and complete module re-exports.
Module inheritance
Module composition

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