@govuk-pay/pay-js-commons/lib/utils/currency-formatter.js

Reusable js scripts for GOV.UK Pay Node.js projects

'use strict';

// Local contants
var AMOUNT_FORMAT = /^(\d+)(?:\.(\d{1,2}))?$/;
var penceToPounds = function penceToPounds(amount) {
  return (amount / 100).toFixed(2);
};
var poundsToPence = function poundsToPence(amount) {
  return (amount * 100).toFixed(0);
};
var penceToPoundsWithCurrency = function penceToPoundsWithCurrency(amount) {
  return new Intl.NumberFormat('en-gb', {
    style: 'currency',
    currency: 'GBP'
  }).format(penceToPounds(amount));
};
var sanitisePoundsAndPenceInput = function sanitisePoundsAndPenceInput(amount) {
  if (amount) {
    var cleanedCurrencyString = amount.replace(/[^0-9.-]+/g, '');
    var result = AMOUNT_FORMAT.exec(cleanedCurrencyString);
    if (result) {
      var pounds = result[1];
      var pence = result[2];
      if (pence === undefined) {
        pence = '00';
      } else if (pence.length === 1) {
        pence += '0';
      }
      return parseInt(pounds + pence, 10);
    }
    return null;
  }
};
module.exports = {
  penceToPounds: penceToPounds,
  poundsToPence: poundsToPence,
  penceToPoundsWithCurrency: penceToPoundsWithCurrency,
  sanitisePoundsAndPenceInput: sanitisePoundsAndPenceInput
};