Hello Typescript!

hydro/lib/mail.ts

@@ -0,0 +1,47 @@
+import nodemailer from 'nodemailer';
+
+const { SendMailError } = require('../error');
+
+/**
+ * @param {string} to
+ * @param {string} subject
+ * @param {string} text
+ * @param {string} html
+ */
+// eslint-disable-next-line import/prefer-default-export
+export async function sendMail(to: string, subject: string, text: string, html: string) {
+    let t: unknown;
+    try {
+        const { system } = global.Hydro.model;
+        const [host, port, secure, user, pass, from] = await Promise.all([
+            system.get('smtp.host'),
+            system.get('smtp.port'),
+            system.get('smtp.secure'),
+            system.get('smtp.user'),
+            system.get('smtp.pass'),
+            system.get('smtp.from'),
+        ]);
+        const transporter = nodemailer.createTransport({
+            host, port, secure, auth: { user, pass },
+        });
+        t = await new Promise((resolve, reject) => {
+            transporter.sendMail({
+                from,
+                to,
+                subject,
+                text,
+                html,
+            }, (err, info) => {
+                if (err) reject(err);
+                else resolve(info);
+            });
+        });
+    } catch (e) {
+        throw new SendMailError(to);
+    }
+    return t;
+}
+
+global.Hydro.lib.mail = {
+    sendMail,
+};