@se-oss/compact-number

@se-oss/compact-number is a lightweight, fast, and highly customizable library for compact number formatting and parsing, offering robust internationalization support.

---

• Installation
• Usage
• Advanced Usage
• Documentation
• Using Locales
• Performance
• Contributing
• License

📦 Installation

npm install @se-oss/compact-number

Install using your favorite package manager

pnpm

pnpm install @se-oss/compact-number

yarn

yarn add @se-oss/compact-number

📖 Usage

compactNumber

Format a number into a compact, human-readable string.

import { compactNumber } from '@se-oss/compact-number';

console.log('Formatting 1234:', compactNumber(1234));
// => 1.2K

console.log('Formatting 1500000:', compactNumber(1500000));
// => 1.5M

console.log(
  'Formatting -1234 with precision 2:',
  compactNumber(-1234, { maximumFractionDigits: 2 })
);
// => -1.23K

uncompactNumber

Parse a compacted string back into a number.

import { uncompactNumber } from '@se-oss/compact-number';

console.log(uncompactNumber('1.2K'));
// => 1200

console.log(uncompactNumber('1.5M'));
// => 1500000

console.log(uncompactNumber('-1.23K'));
// => -1230

💡 Advanced Usage

You can dynamically load locales from the cldr-numbers-full package instead of bundling them. This is useful for applications that support many languages.

First, install the CLDR data package:

pnpm add cldr-numbers-full

Loading a Single Locale

To keep your bundle size small, you can import and register individual locales as needed. This works in any environment.

import { compactNumber, store } from '@se-oss/compact-number';
// Import any CLDR locale data directly
import ca from 'cldr-numbers-full/main/ca/numbers.json';

// Register the Catalan locale from the raw CLDR data
store.registerFromCLDR(ca);

// You can now format numbers using the 'ca' locale
console.log(compactNumber(12345, { locale: 'ca' }));
// => 12,3 mil

Loading All Locales (Node.js)

In Node.js environments, you can register all available CLDR locales at once using registerFullCLDR. This is useful for servers that need to handle many different locales.

import { compactNumber, store } from '@se-oss/compact-number';

// Register all CLDR locales
await store.registerFullCLDR();

// Now you can format numbers in any of the registered locales
console.log(compactNumber(12345, { locale: 'ja' })); // Japanese
// => 1.2万

console.log(compactNumber(54321, { locale: 'fr' })); // French
// => 54,3 k

Note: This function only works in Node.js. It will throw an error in the browser to prevent bundling the entire cldr-numbers-full package.

🌍 Using Locales

By default, only the en locale is registered. To use other locales, you must import and register them. This ensures that unused locales are not included in your final bundle.

import { compactNumber, es, store } from '@se-oss/compact-number';

// Register the Spanish (es) locale
store.register(es);

console.log(compactNumber(1234, { locale: 'es' }));
// => 1.2 mil

📚 Documentation

For all configuration options, please see the API docs.

🚀 Performance

@se-oss/compact-number is designed for speed. Our benchmarks show it's significantly faster than Intl.NumberFormat for compact number formatting.

Library	Operations/second (hz)
@se-oss/compact-number	274,863.69
Intl.NumberFormat	22,298.90
Performance Difference	~12.33x faster

Benchmark script: src/index.bench.ts

🤝 Contributing

Want to contribute? Awesome! To show your support is to star the project, or to raise issues on GitHub

Thanks again for your support, it is much appreciated! 🙏

License

MIT © Shahrad Elahi and contributors.