Fetch .gitignore 🛡️

A professional terminal/CLI tool built with Node.js that simplifies initializing projects with official .gitignore templates from the GitHub gitignore repository.

Stop manually searching and copy-pasting .gitignore content—fetch and save them directly from your terminal!

Table of Contents

• Fetch .gitignore 🛡️
  • Table of Contents
  • 🚀 Features
  • 📦 Installation
  • 🛠️ Usage
    • 1. List Available Templates
    • 2. Add a Template
    • 3. Combine Multiple Templates
    • 4. Options
    • 💾 Cache Configuration
  • 🧪 Local Development & Testing
    • 📦 Prerequisites
    • 🔧 1. Install Dependencies
    • 🔗 2. Link the CLI Globally (Recommended)
    • 🧪 3. Test the CLI
      • List available templates
      • Create a .gitignore file
      • Append to existing .gitignore
      • Overwrite existing .gitignore
      • Add multiple templates
      • Specify target directory
      • Force a refresh (bypass cache)
    • 🧠 4. Run Without Linking (Alternative)
    • 📦 5. Test as a Packed npm Module (Production Simulation)
    • 🧹 6. Unlink When Done
  • 🧪 Running Tests
    • Run All Tests
    • Run Tests in Watch Mode
    • Run Tests with Coverage
    • Test Structure
  • 🏗️ Architecture
  • 🤝 Contributing
  • 📜 License
  • 🐛 Troubleshooting
    • Command not found?
    • Permission issues (macOS/Linux)
  • 🚀 Development Workflow

🚀 Features

• Dynamic Fetching: Pulls the latest templates directly from the official GitHub repository.
• Multiple Templates: Combine multiple .gitignore templates (e.g., Node, Python, Visual Studio Code).
• Caching: Local caching of templates and list for faster access and offline use.
• Safety: Prevents accidental overwriting of existing .gitignore files unless forced.
• Append Mode: Easily add new rules to your existing .gitignore.
• Directory Support: Target any directory, whether it's your current path or a subproject.
• Rate Limit Handling: Smartly handles GitHub API rate limits and provides clear feedback on when to retry.

📦 Installation

To use fetch-gitignore as a global CLI tool, install it via npm:

npm install -g @dileepadev/fetch-gitignore

Or run it instantly using npx:

npx @dileepadev/fetch-gitignore list
npx @dileepadev/fetch-gitignore add Node

🛠️ Usage

1. List Available Templates

To see all templates available in the official GitHub repository:

fetch-gitignore list

2. Add a Template

To create a new .gitignore file for your project:

fetch-gitignore add <TemplateName>

Example: fetch-gitignore add Node

3. Combine Multiple Templates

You can pass multiple template names to merge them into a single .gitignore file:

fetch-gitignore add Node Python Rust

4. Options

Option	Shorthand	Description	Default
--dir <path>	-d	Target directory where .gitignore will be saved.	.
--append	-a	Append content to an existing .gitignore file.	false
--force	-f	Force overwrite an existing .gitignore file.	false
--no-cache	-	Bypass local cache and fetch directly from GitHub.	false
--help	-h	Display help information.	-
--version	-V	Display the version number.	-

💾 Cache Configuration

Templates and the template list are cached locally (usually in ~/.fetch-gitignore-cache) for 24 hours.

You can customize the Time-To-Live (TTL) using an environment variable:

# Set cache to expire after 1 hour (3600 seconds)
export FETCH_GITIGNORE_CACHE_TTL=3600

To disable caching entirely, set it to 0:

export FETCH_GITIGNORE_CACHE_TTL=0

🧪 Local Development & Testing

This guide explains how to test fetch-gitignore locally before publishing to npm.

📦 Prerequisites

• Node.js ≥ 18
• npm ≥ 9

Check your version:

node -v
npm -v

🔧 1. Install Dependencies

From the project root:

npm install

Build the TypeScript sources:

npm run build

🔗 2. Link the CLI Globally (Recommended)

This simulates installing the package globally via npm install -g.

npm link

This creates a global symlink so you can run:

fetch-gitignore

from anywhere on your system.

🧪 3. Test the CLI

Move to any test directory:

mkdir test-cli
cd test-cli

Then try:

List available templates

fetch-gitignore list

Create a .gitignore file

fetch-gitignore add Node

Append to existing .gitignore

fetch-gitignore add Python --append

Overwrite existing .gitignore

fetch-gitignore add Node --force

Add multiple templates

fetch-gitignore add Node Python React

Specify target directory

fetch-gitignore add Node --dir ./backend

Force a refresh (bypass cache)

fetch-gitignore list --no-cache
fetch-gitignore add Node --no-cache

🧠 4. Run Without Linking (Alternative)

If you don’t want to use npm link, you can run the CLI directly:

node dist/bin/index.js list

or

node dist/bin/index.js add Node

📦 5. Test as a Packed npm Module (Production Simulation)

To simulate a real npm installation:

npm pack

This generates a .tgz file like:

dileepadev-fetch-gitignore-1.0.2.tgz

Then install it globally:

npm install -g ./dileepadev-fetch-gitignore-1.0.2.tgz

Now test it as if it were published.

🧹 6. Unlink When Done

To remove the global symlink:

npm unlink -g @dileepadev/fetch-gitignore

🧪 Running Tests

This project uses Vitest for unit and integration testing.

Run All Tests

npm test

Run Tests in Watch Mode

npm run test:watch

Run Tests with Coverage

npm run test:coverage

Test Structure

Test File	Module	Description
tests/utils.test.ts	resolveDirectory, mergeTemplates	Directory resolution, template merging, edge cases
tests/logger.test.ts	logSuccess, logError, logInfo	Stdout/stderr routing, message content
tests/fileManager.test.ts	writeGitignore	Create, overwrite, append, conflict errors
tests/cache.test.ts	saveToCache, getFromCache	Save/load, TTL logic, env var overrides
tests/fetcher.test.ts	fetchTemplate, listTemplates	Mocked HTTP: success, 404, rate limits, response parsing
tests/cli.test.ts	CLI binary	--help, --version, subcommands, error handling

🏗️ Architecture

• TypeScript: Strict, type-safe codebase compiled to ESM.
• Commander.js: Powering the CLI command and argument parsing.
• Node-Fetch: Used to retrieve template data from GitHub APIs.
• Chalk & Ora: Creating a beautiful, interactive terminal experience.
• File System (fs): Reliable management of .gitignore files and local caching.
• Vitest: Fast, TypeScript-native test framework for unit and integration tests.

🤝 Contributing

Contributions are welcome! Please check our CONTRIBUTING.md for guidelines on how to get started.

📜 License

Distributed under the MIT License. See LICENSE for more information.

🐛 Troubleshooting

Command not found?

Make sure npm link ran successfully. You can verify it with:

which fetch-gitignore

Permission issues (macOS/Linux)

Ensure your CLI entry file is executable:

chmod +x dist/bin/index.js

🚀 Development Workflow

During development:

1. Edit code
2. Run npm run build
3. Run fetch-gitignore
4. Test behavior
5. Repeat

Because npm link creates a symlink, changes apply immediately — no reinstall required.