🧑‍💻 Improve env variables type safety and management (#718)

Closes #679

packages/emails/package.json

@@ -27,7 +27,8 @@
     "@typebot.io/lib": "workspace:*",
     "eslint": "8.44.0",
     "eslint-config-custom": "workspace:*",
-    "@typebot.io/tsconfig": "workspace:*"
+    "@typebot.io/tsconfig": "workspace:*",
+    "@typebot.io/env": "workspace:*"
   },
   "peerDependencies": {
     "@faire/mjml-react": "2.1.4",

packages/emails/src/sendEmail.ts

@@ -1,20 +1,20 @@
 import { createTransport, SendMailOptions } from 'nodemailer'
-import { env } from '@typebot.io/lib'
+import { env } from '@typebot.io/env'
 
 export const sendEmail = (
   props: Pick<SendMailOptions, 'to' | 'html' | 'subject'>
 ) => {
   const transporter = createTransport({
-    host: process.env.SMTP_HOST,
-    port: Number(process.env.SMTP_PORT),
+    host: env.SMTP_HOST,
+    port: env.SMTP_PORT,
     auth: {
-      user: process.env.SMTP_USERNAME,
-      pass: process.env.SMTP_PASSWORD,
+      user: env.SMTP_USERNAME,
+      pass: env.SMTP_PASSWORD,
     },
   })
 
   return transporter.sendMail({
-    from: process.env.SMTP_FROM ?? env('SMTP_FROM'),
+    from: env.NEXT_PUBLIC_SMTP_FROM,
     ...props,
   })
 }