@transferwise/sensible/src/index.js

Sensible default values

import DEFAULT_AMOUNTS from "./sensible-amounts";
import DEFAULT_ROUTES from "./sensible-routes";
import DEFAULT_TARGETS from "./sensible-targets";

/**
 * Gets the default amount for a specific currency.
 * @param {string} currency - The currency code (e.g "JPY").
 * @returns {number} The default amount for the given currency or the fallback default amount.
 */
export function getAmountForCurrency(currency) {
  return DEFAULT_AMOUNTS[currency] || DEFAULT_AMOUNTS.default;
}


/**
 * Gets the currency pair for a specific country.
 * @param {string} country - The country code (e.g "us").
 * @returns {[sourceCurrency: string, targetCurrency: string]} The default currency pair for the given country or the fallback default currency pair.
 */
export function getCurrencyPairForCountry(country) {
  const route = getRouteForCountry(country);
  return [route.slice(0, 3), route.slice(3)];
}

/**
 * Gets the route for a specific country.
 * @param {string} country - The country code (e.g "us").
 * @returns {string} The default route for the given country or the fallback default route.
 */
export function getRouteForCountry(country) {
  return DEFAULT_ROUTES[country.toLowerCase()] || DEFAULT_ROUTES.default;
}

/**
 * Gets the default target currency for a specific source currency.
 * @param {string} currency - The source currency code (e.g "USD").
 * @returns {string} The default target currency for the given source currency or the fallback default target currency.
 */
export function getTargetForSourceCurrency(currency) {
  return getTargetsForSourceCurrency(currency)[0]
}

/**
 * Gets all default target currencies for a specific source currency.
 * @param {string} currency - The source currency code (e.g "USD").
 * @returns {string[]} An array of default target currencies for the given source currency or the fallback default target currencies.
 */
export function getTargetsForSourceCurrency(currency) {
  return DEFAULT_TARGETS[currency] || DEFAULT_TARGETS.default;
}