@shopgate/pwa-common/helpers/i18n/getPriceFormatter.js

Common library for the Shopgate Connect PWA.

import IntlMessageFormat from 'intl-messageformat';
import curry from 'lodash/curry';
import appConfig from '@shopgate/pwa-common/helpers/config';
import messageCache from "./messageCache";
const {
  showPriceGrouping
} = appConfig;

/**
 * Returns an instance of IntlMessageFormat from cache based on a hash.
 * The hash is generated from given language code and translation key.
 * If no instance exists yet, a new instance will be created and returned.
 * @param {string} langCode A language code.
 * @param {string} currency The current currency.
 * @param {boolean} fractions With or without fraction digits.
 * @returns {IntlMessageFormat}
 */
const getFormattedPriceFromCache = (langCode, currency, fractions) => {
  const hash = `${langCode}_price_${currency}_${fractions}`;

  // Check if a cached instance already exists.
  if (messageCache[hash]) {
    return messageCache[hash];
  }
  messageCache[hash] = new IntlMessageFormat(`{price, number, ${currency}}`, langCode, {
    number: {
      [currency]: {
        style: 'currency',
        currency,
        minimumFractionDigits: fractions ? 2 : 0,
        maximumFractionDigits: fractions ? 2 : 0,
        useGrouping: showPriceGrouping
      }
    }
  });
  return messageCache[hash];
};

/**
 * Get a formatted price by currency and language code.
 * @param {string} langCode A language code.
 * @param {number} price The price to format.
 * @param {string} currency The current currency.
 * @param {boolean} fractions With or without fraction digits.
 * @returns {string}
 */
const formatPrice = (langCode, price, currency, fractions) => getFormattedPriceFromCache(langCode, currency, fractions).format({
  price
});
const getPriceFormatter = curry(formatPrice);
export default getPriceFormatter;