Refined request schema

src/index.js

@@ -24,7 +24,7 @@ app.use((req, res, next) => {
 app.post('/:template', async (req, res) => {
 	try {
 		req.params.template = jsvv(req.params.template, templateNameSchema);
-		req.body            = jsvv(req.body, requestSchema);
+		req.body            = jsvv(req.body,            requestSchema);
 	} catch (e) {
 		return res.status(400).send(e.message);
 	}

src/models/mailer.js

@@ -42,7 +42,7 @@ const sendMail = promisify(transporter.sendMail).bind(transporter);
 
 module.exports = {
 	async sendMessage(template, request) {
-		const message = handlebars.compile(templatesModel.getTemplate(template))(request.vars || {});
+		const message = handlebars.compile(templatesModel.getTemplate(template))(request.vars);
 		
 		const mailer = {
 			from:    SMTP_SENDER,

src/schemas/request.js

@@ -9,7 +9,9 @@ module.exports = {
 		to:      stringRequiredSchema,
 		subject: stringRequiredSchema,
 		vars: {
-			type: Object
+			type:     Object,
+			required: true,
+			default:  () => ({})
 		}
 	}
 };