Introduction to requireindex

The requireindex module is a Node.js utility that helps you to efficiently manage and index your modules. It automatically requires every file in a directory and collects them in a single object, making your code cleaner and more maintainable. In this article, we’ll explore the various APIs and how to use them, with practical examples to help you get started quickly.

Installation

npm install requireindex

API Examples

Basic Usage

const requireindex = require('requireindex');
const modules = requireindex(__dirname + '/myModules');
console.log(modules);

Glob Patterns

Use glob patterns to require files that match specific criteria:

const modules = requireindex(__dirname + '/myModules/*.js');
console.log(modules);

Ignoring Files

Filter out files you want to ignore using regular expressions:

const modules = requireindex(__dirname + '/myModules', { 
  filter: (filename) => !filename.includes('test')
});
console.log(modules);

Recursive Loading

Enable recursive loading to include subdirectories:

const modules = requireindex(__dirname + '/myModules', { 
  recursive: true 
});
console.log(modules);

App Example

Let’s see an example application that uses requireindex to dynamically load and use controllers in an Express.js app:

const express = require('express');
const requireindex = require('requireindex');
const app = express();

const controllers = requireindex(__dirname + '/controllers');

Object.keys(controllers).forEach((key) => {
  const controller = controllers[key];
  app.use(`/api/${key}`, controller);
});

app.listen(3000, () => {
  console.log('Server is running on port 3000');
});

Conclusion

Using requireindex can significantly simplify module management in your Node.js applications. We hope these examples help you make the most of this powerful tool. Don’t forget to follow the best practices for module organization and structure to maintain clean and maintainable codebases.

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