🔍 Difference Calculator (gendiff)

A CLI tool for comparing files (JSON/YAML) and displaying differences in multiple formats.

🌟 Features

• Supports JSON and YAML input formats
• Three output formats:
  • Stylish (default) - colored tree-like output
  • Plain - clean textual description
  • JSON - machine-readable format

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⚙️ Installation

# Clone repository
git clone https://github.com/ElenaManukyan/Difference-Calculator.git
cd Difference-Calculator

# Install dependencies
npm install

# Install globally (optional)
npm install -g .

🛠 Development and Testing

# Run linter
npx eslint .
make lint

# Run tests
npm test
make test

# Run formatter
npx prettier --write .

🚀 Usage

gendiff -h
Usage: gendiff [options] <filepath1> <filepath2>

Compares two configuration files and shows a difference.

Options:
  -V, --version          output the version number
  -f, --format <format>  output format (default: "stylish")
  -h, --help             display help for command

📋 Examples

Compare flat files

# JSON files
gendiff file1.json file2.json

# YAML files
gendiff file1.yml file2.yml

Compare nested structures

# With plain format
gendiff --format plain nested1.json nested2.json

# Get JSON output
gendiff --format json nested1.yml nested2.yml

🎥 Demo:

Creating difference between 2 flat .json files:

Creating difference between 2 flat .yml files:

Creating difference between 2 nested .json files:

Creating difference between 2 nested .yml files:

Creating difference between 2 nested .json files with '--format plain' parameter:

Creating difference between 2 nested .yml files with '--format plain' parameter:

Creating difference between 2 nested .json files with '--format json' parameter:

Creating difference between 2 nested .yml files with '--format json' parameter: