Dutch Number Parser

Dutch Number Parser is a TypeScript library designed to parse and convert Dutch counting numbers into their numeric equivalents. This package is ideal for applications that need to interpret Dutch-written numbers in a numerical format, supporting numbers up to one million.

Features

• Comprehensive Parsing: Handles Dutch numbers up to one million, including complex forms like "twee honderd drie en veertig duizend vijf honderd zes en zeventig".
• Integration with ANTLR: Uses ANTLR (ANother Tool for Language Recognition) for robust parsing of Dutch number phrases.
• TypeScript Support: Fully written in TypeScript, providing type safety and autocompletion in TypeScript projects.
• Logging Support: Includes an ILogger interface for flexible logging integration.

Installation

You can install the package via npm:

npm install @grootstebozewolf/dutch-number-parser

Usage

Basic Usage

Import the Tel class from the package:

import { Tel } from '@grootstebozewolf/dutch-number-parser';

const dutchNumberString = "vier honderd zes en twintig";
const numericValue = Tel.parse(dutchNumberString);
console.log(numericValue); // Outputs: 426

Using with Logger

You can set a custom logger that implements the ILogger interface:

import { Tel, ILogger } from '@grootstebozewolf/dutch-number-parser';

class CustomLogger implements ILogger {
    logError(message: string): void {
        console.error(`Custom Error: ${message}`);
    }
    logInfo(message: string): void {
        console.log(`Custom Info: ${message}`);
    }
    logWarning(message: string): void {
        console.warn(`Custom Warning: ${message}`);
    }
}

Tel.setLogger(new CustomLogger());

const result = Tel.parse("drie honderd");
// This will use your custom logger for any logs

Supported Dutch Numbers

The Dutch Number Parser can handle a wide range of Dutch number phrases, including but not limited to:

• Simple numbers: "een", "twee", "drie"
• Tens: "twintig", "dertig", "veertig"
• Hundreds: "honderd", "twee honderd"
• Thousands: "duizend", "vier duizend drie honderd"
• Complex forms: "twee honderd drie en veertig duizend vijf honderd zes en zeventig"

Development and Contribution

Contributions are welcome! If you find a bug or have a feature request, please open an issue on the GitHub repository.

To develop locally:

1. Clone the repository.
2. Install dependencies using npm install.
3. Build the project with npm run build.
4. Run tests with npm test.

License

Dutch Number Parser by Jeroen Bloemscheer is licensed under CC BY-SA 4.0