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Node.js module to work with currency codes based on ISO 4217

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Currency Codes TS

A TypeScript library for ISO 4217 currency codes. Efficiently lookup and validate currency codes, retrieve associated countries, and more.

This library is inspired by and originally forked from currency-codes. This version adds TypeScript support and will be periodically updated with the latest currency data.

Installation

npm install currency-codes-ts

Examples

Here's how you can use the library:

Code lookup

import { codes } from 'currency-codes-ts';

// get currency details
const euroInfo: CurrencyCodeRecord = codes('EUR');
console.log(euroInfo);  

/*
  {
    code: 'EUR',
    number: '978',
    digits: 2,
    currency: 'Euro',
    countries: [
      'Åland Islands', 'Andorra', 'Austria', 'Belgium', 'Croatia',
      'Cyprus', 'Estonia', 'European Union', 'Finland', 'France',
      'French Guiana', 'French Southern Territories (The)', 'Germany',
      'Greece', 'Guadeloupe', 'Holy See (The)', 'Ireland', 'Italy',
      'Latvia', 'Lithuania', 'Luxembourg', 'Malta', 'Martinique',
      'Mayotte', 'Monaco', 'Montenegro', 'Netherlands (The)',
      'Portugal', 'Réunion', 'Saint Barthélemy', 'Saint Martin (French Part)',
      'Saint Pierre and Miquelon', 'San Marino', 'Slovakia', 'Slovenia',
      'Spain'
    ]
  }
*/

Number Lookup

import { number } from 'currency-codes-ts';

console.log(number(967));

/*
  {
    code: 'ZMW',
    number: '967',
    digits: 2,
    currency: 'Zambian Kwacha',
    countries: [ 'Zambia' ]
  }
*/

Country Lookup

import { country } from 'currency-codes-ts';

console.log(country('Columbia'));

/*
  [
    {
      code: 'COP',
      number: '170',
      digits: 2,
      currency: 'Colombian Peso',
      countries: [ 'Colombia' ]
    },
    {
      code: 'COU',
      number: '970',
      digits: 2,
      currency: 'Unidad de Valor Real',
      countries: [ 'Colombia' ]
    }
  ]
*/

Get all Currency Codes

import { codes } from 'currency-codes-ts';

console.log(codes());

/*
  [
    'AED',
    'AFN',
    ...
    'ZAR',
    'ZMW'
  ]
*/

Get all Currency Numbers

import { numbers } from 'currency-codes-ts';

console.log(numbers());

/*
[
	'784',
	'971',
	...
	'710',
	'967'
]
*/

Get all Countries

import { countries } from 'currency-codes-ts';

console.log(countries());

/*
[ 
	'united arab emirates',
	'afghanistan',
	...
]
*/

Get all currency records

import { data } from 'currency-codes-ts';

console.log(data);

/*
[{
	code: 'AED',
	number: '784',
	digits: 2,
	currency: 'United Arab Emirates dirham',
	countries: ['united arab emirates']
}, {
	code: 'AFN',
	number: '971',
	digits: 2,
	currency: 'Afghan afghani',
	countries: ['afghanistan']
}, {
	...
}]
*/

Functions

  • code(code: string): Returns a CurrencyCodeRecord object based on ISO 4217 currency code. Returns undefined if not found.
  • country(country: string): Returns an array of CurrencyCodeRecord objects used in the given country.
  • number(number: number | string): Returns a CurrencyCodeRecord object based on ISO 4217 currency number. Returns undefined if not found.
  • codes(): Returns an array of ISO 4217 currency codes.
  • numbers(): Returns an array of ISO 4217 currency numbers.
  • countries(): Returns an array of country names.

Properties

  • data: Returns a CurrencyCodeRecord[] array containing all the available currency records.
  • publishDate: Returns the ISO formatted date the currencies were last updated.

Types

  • CurrencyCodeRecord: Defines the object returned on currency lookup. Includes properties like currency, code, countries, and digits.
interface CurrencyCodeRecord {
  code: CurrencyCode;
  number: string;
  digits: number;
  currency: string;
  countries: Country[];
}
  • CurrencyCode: The three-letter ISO 4217 code representing a currency (e.g., USD, EUR).
type CurrencyCode = "AED" | "AFN" | "ALL" | "AMD" | "[...]" | "ZMW" | "ZWL";
  • Country: A string representing the name of a country.
type Country = "United Arab Emirates (The)" | "Afghanistan" | "Albania" | "Armenia" | "[...]" | "Zambia" | "Zimbabwe";

Contributing

You can update the package with the latest currency data by running

npm run iso

This will update the data.ts and types.ts file based on the ingested data.

To build simply run tsc. This will create a build in the dist/ folder.

For contributions feel free to raise issues and pull requests.

License

MIT

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