Package Version Info

A blazingly fast CLI tool written in Zig that generates TypeScript version information files from your package.json. Perfect for embedding version, build date, and git information into your applications.

✨ Features

• 🚀 Fast: Written in Zig for maximum performance
• 📦 Zero Dependencies: No runtime dependencies required
• 👤 Author Information: Extracts author details from package.json
• 🌿 Git Integration: Automatically extracts branch and commit information
• ⚡ TypeScript Output: Generates type-safe TypeScript constants
• 🎯 Graceful Degradation: Works with or without a git repository or author info
• 🔧 Configurable: Customize input and output paths

🚀 Quick Start

Installation

npm install package-version-info --save-dev
# or
yarn add package-version-info --dev

Usage

# Generate version-info.ts from package.json
npx package-version-info

# Show version
npx package-version-info --version

# Custom paths (.git is the default Git directory)
npx package-version-info --input package.json --output src/version-info.ts --git ../.git

# Short options
npx package-version-info -i package.json -o src/version-info.ts -g ../.git

Output Example

Full Output (with author and git):

export const VERSION_INFO = {
  version: "1.0.0",
  date: "2025-12-26T16:00:00.000Z",
  author: {
    name: "Dominik Hladík",
    email: "dominik.hladik@seznam.cz",
    url: "https://github.com/Celtian",
  },
  git: {
    branch: "master",
    commit: "324822ac3893dd6159ab8cb4477d45edeacf11f6",
  },
};

Minimal Output (without author and git):

export const VERSION_INFO = {
  version: "1.0.0",
  date: "2025-12-26T16:00:00.000Z",
};

📖 Usage in Your Application

Once generated, import and use the version info in your application:

import { VERSION_INFO } from "./version-info";

console.log(`Version: ${VERSION_INFO.version}`);
console.log(`Build Date: ${VERSION_INFO.date}`);

if (VERSION_INFO.author) {
  console.log(`Author: ${VERSION_INFO.author.name}`);
  console.log(`Email: ${VERSION_INFO.author.email}`);
  console.log(`URL: ${VERSION_INFO.author.url}`);
}

if (VERSION_INFO.git) {
  console.log(`Branch: ${VERSION_INFO.git.branch}`);
  console.log(`Commit: ${VERSION_INFO.git.commit}`);
}

🔧 CLI Options

Option	Alias	Default	Description
--version	-v	-	Display version information
--input	-i	package.json	Path to package.json file
--output	-o	version-info.ts	Path to output TypeScript file

🛠️ Integration with Build Tools

NPM Scripts

Add to your package.json:

{
  "scripts": {
    "prebuild": "package-version-info",
    "build": "your-build-command"
  }
}

With TypeScript Projects

{
  "scripts": {
    "version-info": "package-version-info --output src/version-info.ts",
    "prebuild": "npm run version-info",
    "build": "tsc"
  }
}

🏗️ Development

This project is written in Zig. To build from source:

Prerequisites

• Zig >= 0.15.2

Build Commands

# Build the executable
zig build

# Run the executable
zig build run

# Run with arguments
zig build run -- --input package.json --output version-info.ts --git .git

# Run tests
zig build test

# Clean build artifacts
rm -rf zig-cache zig-out

🎯 Why Zig?

• Performance: Compiled binary with minimal overhead
• Size: Small executable footprint
• Cross-platform: Easy to build for multiple platforms
• Memory Safety: No runtime exceptions or undefined behavior

📦 Dependencies

None - This is a standalone binary with zero runtime dependencies.

🤝 Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

🪪 License

Copyright © 2025 - 2026 Dominik Hladik

All contents are licensed under the MIT license.