add js-fp3

js-fp3/domain/money.js

@@ -0,0 +1,16 @@
+/**
+ * @typedef {Object} Money
+ * @property {number} amount
+ */
+
+/**
+ * @param {number} amount
+ * @returns {Money}
+ */
+export const createMoney = (amount) => ({ amount });
+
+/**
+ * @param {Money} money
+ * @returns {string}
+ */
+export const formatMoney = (money) => money.amount.toFixed(2);