code optimization

lib/orders/H004/serializer.js

@@ -0,0 +1,19 @@
+'use strict';
+
+const orders = require('../orders');
+
+const iniSerializer = require('./serializers/ini');
+const downloadSerializer = require('./serializers/download');
+const uploadSerializer = require('./serializers/upload');
+
+module.exports = {
+	use(order) {
+		const { version, orderType } = order;
+
+		if (orders.version(version).isIni(orderType)) return iniSerializer.use(order);
+		if (orders.version(version).isDownload(orderType)) return downloadSerializer.use(order);
+		if (orders.version(version).isUpload(orderType)) return uploadSerializer.use(order);
+
+		throw Error('Error from orders/orders.js: Wrong order version/type.');
+	},
+};