This Remark plugin, "remark-currency-formatter," transforms numerical currency notations within markdown texts into formatted currency strings, enhancing documents with precise and locale-aware currency formatting. It leverages custom currency configurations and the powerful exchange-rounding library for accurate and visually appealing currency representations.

Install the plugin using npm or yarn:

npm install remark-currency-formatter

Or:

yarn add remark-currency-formatter

To automatically format currency notations in markdown texts:

import remark from 'remark';
import remarkCurrencyFormatter from 'remark-currency-formatter';

(async () => {
  try {
    const file = await remark()
      .use(remarkCurrencyFormatter, {
        locale: 'en-US',
        customCurrencyData: {
          USD: {
            symbol: '$',
            narrowSymbol: '$',
            code: 'USD',
            name: 'US Dollar',
            defaultDecimals: 2
          }
        }
      })
      .process('Price is $(19.99,USD) and not equivalent to $(23.99,EUR).');
    console.log(String(file));
  } catch (err) {
    throw err;
  }
})();

The plugin recognizes currency notations like $(amount,currencyCode) and formats them based on the given customCurrencyData and locale settings.

Configure the plugin with the following options to customize its behavior and output:

• locale: Specify the locale used for formatting currencies (e.g., 'en-US').
• customCurrencyData: Define custom currency symbols, names, and decimal precision. This setting is essential for supporting non-standard or digital currencies like Bitcoin.
• Rest of Intl.NumberFormat options: Pass additional options supported by Intl.NumberFormat for currency formatting, such as style, currency, currencyDisplay, minimumFractionDigits, maximumFractionDigits, and useGrouping.

Example of customCurrencyData:

{
  BTC: {
    symbol: '₿',
    narrowSymbol: '₿',
    code: 'BTC',
    name: 'Bitcoin',
    defaultDecimals: 8
  }
}

• Dynamic Currency Formatting: Automatically formats monetary values based on locale and custom settings.
• Support for Custom Currencies: Easily add support for any type of currency, including digital currencies like Bitcoin or Ethereum.
• Locale Awareness: Formats numbers according to the specified locale, ensuring that the currency presentation is regionally appropriate.
• Flexible Configuration: Tailor the behavior with a variety of options, adapting the formatter to meet different needs.

Contributions are welcome! Please submit pull requests or open issues to improve the plugin or add new features.

Licensed under the CORE License.