Introduction to fs-jetpack

fs-jetpack is a powerful and user-friendly Node.js library designed to simplify file system operations. It offers a plethora of convenient APIs for handling file and directory manipulations seamlessly. In this guide, we’ll explore dozens of useful APIs provided by fs-jetpack along with code snippets and a comprehensive application example.

Getting Started

First, you need to install fs-jetpack via npm:

  npm install fs-jetpack

Basic API Examples

Reading Files

Read the contents of a file:

  const jetpack = require('fs-jetpack');
  const content = jetpack.read('file.txt', 'utf8');
  console.log(content);  // Outputs content of the file

Writing Files

Write data to a file:

  jetpack.write('file.txt', 'Hello, world!');

Appending to Files

Append data to the end of a file:

  jetpack.append('file.txt', '\nAppended content!');

Copying Files

Copy a file to a new location:

  jetpack.copy('source.txt', 'destination.txt', { overwrite: true });

Moving Files

Move a file to a new location:

  jetpack.move('file.txt', 'new-directory/file.txt');

Deleting Files

Delete a file:

  jetpack.remove('file.txt');

Directory Operations

Checking for a Directory

Check if a directory exists:

  const exists = jetpack.exists('some-directory');
  console.log(exists);  // Outputs 'dir' if directory exists, otherwise null

Creating Directories

Create a new directory:

  jetpack.dir('new-directory');

Deleting Directories

Remove a directory and all its contents:

  jetpack.remove('old-directory');

Advanced API Examples

Merging Directories

Merge contents of two directories:

  jetpack.copy('source-dir', 'dest-dir', { overwrite: true, matching: '*' });

Inspecting Files and Directories

Get metadata about a file or directory:

  const info = jetpack.inspect('path/to/item');
  console.log(info);  // Outputs size, type, access time, etc.

List Files in a Directory

List all files in a directory:

  const files = jetpack.list('some-directory');
  console.log(files);  // Outputs an array of filenames

Building an App with fs-jetpack

Let’s build a simple Node.js app that performs several file system operations using fs-jetpack.

  const jetpack = require('fs-jetpack');
  
  // Create project directory
  jetpack.dir('my-project');

  // Create a README file
  jetpack.write('my-project/README.md', '# My Project');

  // Append usage instructions to README
  jetpack.append('my-project/README.md', '\n\n## Usage\n\n1. Do this\n2. Do that');

  // Create a sample configuration file
  const config = {
    database: 'my-database',
    user: 'admin',
    password: 'password123'
  };
  jetpack.write('my-project/config.json', config);

  // Copy configuration file to backup location
  jetpack.copy('my-project/config.json', 'my-project/config-backup.json');

  // List all files in project directory
  const files = jetpack.list('my-project');
  console.log('Project files:', files);  // Outputs an array of filenames in the project directory

  // Clean up - remove project directory
  jetpack.remove('my-project');

In this example, we created a project directory with a README file, a configuration file, and then listed and deleted the project directory.

Whether you are performing basic file operations or managing complex directory structures, fs-jetpack provides a robust set of tools to help you get the job done efficiently.

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