Modules are essential components in many software systems, allowing for organized code structure and reusable functionality. Here's a quick overview of how to work with modules effectively:

Key Concepts

  • Module Definition: A self-contained unit of code that can be imported and used in other parts of an application.
  • Module Types:
    • Core modules (built-in)
    • Third-party modules (external libraries)
    • Custom modules (user-defined)
  • Module Structure:
    • module.exports (Node.js style)
    • export default (ES6 style)
    • __all__ (Python style)

Best Practices

  • Always use clear naming conventions for modules
  • Keep modules focused on single responsibilities
  • Document public APIs with comments or JSDoc
  • Use version control for module development

Example

// example_module.js
const myModule = {
  greet: () => 'Hello from module!',
  calculate: (a, b) => a + b
};

module.exports = myModule;

For more advanced topics on modules, check out our Advanced Topics Guide. 📚

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